CN210173920U - Intermittent type formula ready-mixed mortar cement concrete mixing plant - Google Patents
Intermittent type formula ready-mixed mortar cement concrete mixing plant Download PDFInfo
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- CN210173920U CN210173920U CN201920697645.3U CN201920697645U CN210173920U CN 210173920 U CN210173920 U CN 210173920U CN 201920697645 U CN201920697645 U CN 201920697645U CN 210173920 U CN210173920 U CN 210173920U
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- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 61
- 239000004567 concrete Substances 0.000 title claims abstract description 48
- 239000004568 cement Substances 0.000 title claims abstract description 24
- 238000003756 stirring Methods 0.000 claims abstract description 80
- 239000004575 stone Substances 0.000 claims abstract description 55
- 238000003860 storage Methods 0.000 claims abstract description 45
- 239000004576 sand Substances 0.000 claims abstract description 41
- 239000000843 powder Substances 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000000654 additive Substances 0.000 claims abstract description 9
- 230000000996 additive effect Effects 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000010276 construction Methods 0.000 abstract description 2
- 238000005303 weighing Methods 0.000 description 11
- 241000196324 Embryophyta Species 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 239000011435 rock Substances 0.000 description 8
- 239000002245 particle Substances 0.000 description 7
- 239000002994 raw material Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000010881 fly ash Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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Abstract
The utility model discloses an intermittent type formula ready-mixed mortar cement concrete mixing plant belongs to construction equipment technical field. The stirring station comprises a stone storage bin, a sand storage bin, a powder storage bin and a stirring main body, wherein the stirring main body comprises a stirring main machine, a mortar pre-mixer, a stone buffer storage bin, a water metering hopper, an additive metering hopper and a finished product bin; the feed inlet of the stirring main machine is respectively connected with the mortar pre-mixer and the discharge outlet of the stone buffer bin, and the discharge outlet of the stirring main machine is connected with the feed inlet of the finished product bin; the discharge port of the stone storage bin is connected with the stone cache bin, the discharge port of the sand storage bin is connected with the feed port of the mortar pre-mixer, and the discharge port of the powder storage bin is connected with the feed port of the mortar pre-mixer; the discharge ports of the water measuring hopper and the admixture measuring hopper are connected with the feed port of the mortar premixing machine through a conveying pipeline. The mixing plant not only can save mixing time, but also can enable various materials to be mixed more uniformly, and the quality of concrete is ensured.
Description
Technical Field
The utility model belongs to the technical field of construction equipment, concretely relates to intermittent type formula ready-mixed mortar cement concrete mixing plant.
Background
The concrete is called concrete (t xi ng) for short, which is a general name of engineering composite materials formed by cementing aggregate into a whole by cementing materials. The term concrete generally refers to cement as a cementing material and sand and stone as aggregate; the cement concrete is also called as common concrete and is obtained by mixing the cement concrete and water (which can contain additives and admixture) according to a certain proportion and stirring. Because the concrete has the characteristics of rich raw materials, low price and simple production process, the consumption of the concrete is increased more and more. Meanwhile, the concrete also has the characteristics of high compressive strength, good durability, wide strength grade range and the like. These characteristics make it very widely used, not only in various civil engineering, that is shipbuilding, machinery industry, ocean development, geothermal engineering, etc., but also concrete is an important material.
In the civil engineering works of the prior art, the mixing of the concrete is usually carried out at a special mixing station. However, when the existing concrete mixing plant is used for mixing, the aggregate and the powder are firstly put into a mixing main machine, and then water (additive) is added for mixing. The stirring mode has the problems of long stirring time, insufficient stirring uniformity and unstable concrete quality.
As a person skilled in the art, there is a need to provide an improvement in the art to overcome the shortcomings of the prior art, and to provide a technique capable of reducing the stirring time and improving the stirring uniformity.
SUMMERY OF THE UTILITY MODEL
In order to solve one or more problems in the prior art, the utility model provides an intermittent type formula ready-mixed mortar cement concrete mixing plant.
In order to realize the purpose, the utility model discloses a technical scheme as follows:
an intermittent premixed mortar cement concrete mixing plant comprises a stone storage bin, a sand storage bin, a powder storage bin and a mixing main body, wherein the mixing main body comprises a mixing main machine, a mortar premixing machine, a stone buffer storage bin, a water metering hopper, an additive metering hopper and a finished product bin; the feed inlet of the stirring main machine is respectively connected with the mortar pre-mixer and the discharge outlet of the stone buffer bin, and the discharge outlet of the stirring main machine is connected with the feed inlet of the finished product bin; the discharge hole of the stone storage bin is connected with the stone cache bin through a first conveying device, the discharge hole of the sand storage bin is connected with the feed inlet of the mortar pre-mixer through a second conveying device, and the discharge hole of the powder storage bin is connected with the feed inlet of the mortar pre-mixer through a third conveying device; and the discharge ports of the water metering hopper and the additive metering hopper are connected with the feed port of the mortar pre-mixer through a conveying pipeline.
In a further embodiment, the first conveyor is a belt conveyor.
In a further embodiment, the second conveyor is a belt conveyor.
In a further embodiment, the third conveyor is a hoist.
In a further embodiment, the discharge opening of the rock storage bin is provided with a rock material weighing hopper; a sand material metering hopper is arranged at a discharge port of the sand material storage bin; and a powder measuring hopper is arranged at a discharge port of the powder storage bin.
In a further embodiment, the main stirring machine and the mortar ready-mixing machine are connected with the same power system.
In a further embodiment, the stirring host comprises a stirring box, a stirring shaft is arranged in the stirring box, one end of the stirring shaft penetrates through one side of the stirring box and is connected with the power device, and the other end of the stirring shaft penetrates through the opposite side of the stirring box and is connected with one end of a transmission shaft; the mortar premixing machine comprises a premixing box, wherein a premixing shaft is arranged in the premixing box, one end of the premixing shaft is rotatably connected with the side wall of one side of the premixing box, and the other end of the premixing shaft penetrates through the opposite side of the premixing box and is connected with the other end of the transmission shaft; the stirring shaft and the premixing shaft are respectively provided with stirring blades.
In a further embodiment, the power device is an electric motor.
In a further embodiment, the stirring vane is a helical stirring vane.
Compared with the prior art, the utility model provides a technical scheme has following beneficial effect or advantage:
the utility model provides an intermittent type formula ready-mixed mortar cement concrete mixing plant is through setting up mortar ready-mixed machine, stirs powder and sand material in advance, then stirs the acquisition concrete finished product with the building stones again, not only can practice thrift the churning time, can make various materials mix ground more even moreover, ensures the quality of concrete.
Specific embodiments of the present invention are disclosed in detail with reference to the following description and the accompanying drawings, which specify the manner in which the principles of the invention may be employed. It should be understood that the embodiments of the present invention are not so limited in scope. The embodiments of the invention include many variations, modifications and equivalents within the spirit and scope of the appended claims.
Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.
It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural view of the stirring body in the embodiment of the present invention;
fig. 3 is an enlarged view of point a in fig. 2.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that the indication of the position or the positional relationship is based on the position or the positional relationship shown in the drawings, or the position or the positional relationship that the utility model is usually placed when using, or the position or the positional relationship that the skilled person conventionally understands, or the position or the positional relationship that the utility model is usually placed when using, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or suggest that the indicated device or element must have a specific position, be constructed and operated in a specific position, and thus, cannot be understood as limiting the present invention. Furthermore, the terms "first" and "second" are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. For those skilled in the art, the drawings of the above terms in the embodiments with specific meanings in the present invention can be understood in specific situations, and the technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
As shown in fig. 1 to 3, an embodiment of the present invention provides an intermittent pre-mixed mortar cement concrete mixing plant, which includes a stone storage bin 100, a sand storage bin 200, a powder storage bin 300 and a mixing main body 400; the stirring main body 400 comprises a stirring main machine 410, a mortar pre-mixer 420, a stone buffer bin 430, a water measuring hopper 440, an admixture measuring hopper 450 and a finished product bin 460; wherein, the feed inlet of the stirring main machine 410 is respectively connected with the mortar pre-mixer 420 and the discharge outlets of the stone buffer bin 430, and the discharge outlet of the stirring main machine 410 is connected with the feed inlet of the finished product bin 460; the discharge hole of the stone storage bin 100 is connected with the stone buffer bin 430 through a first conveying device 500, the discharge hole of the sand storage bin 200 is connected with the feed inlet of the mortar pre-mixer 420 through a second conveying device 600, and the discharge hole of the powder storage bin 300 is connected with the feed inlet of the mortar pre-mixer 420 through a third conveying device 700; the discharge ports of the water measuring hopper 440 and the admixture measuring hopper 450 are connected with the feed port of the mortar pre-mixer 420 through a conveying pipeline.
The embodiment of the utility model provides an above-mentioned intermittent type formula ready-mixed mortar cement concrete mixing plant's working process as follows:
during the first stirring, the corresponding stones, sands and powder are obtained from the stone storage bin 100, the sand storage bin 200 and the powder storage bin 300 according to the mixture ratio, then the stones are conveyed to the stirring host machine 410, and the sands and the powder are conveyed to the mortar pre-mixer 420; then, adding a proper amount of water (if the additive is needed, adding a proper amount of additive according to the mixture ratio) into the mortar pre-mixer 420 according to the mixture ratio, and performing mortar pre-stirring; after the mortar is pre-stirred, the mortar is conveyed to the stirring main machine 410 to be stirred with stone, and finally the finished concrete is obtained.
During the process of stirring the finished concrete, the sand and powder in the next stirring period are conveyed to the mortar pre-mixer 420 for pre-stirring, and then after the finished concrete is stirred and conveyed to the finished product bin 460, the mortar pre-stirred in the mortar pre-mixer 420 is conveyed to the stirring main machine 410 while the stone material for next stirring is added to the stirring main machine 410, and then the sand and powder in the next period are conveyed to the mortar pre-mixer 420 for pre-stirring, and the operations are repeated.
The stone mainly plays a rigid supporting role in concrete, and the powder and the sand are mainly used for filling gaps among the stones, so that the stones can be bonded together, and the sufficient strength is achieved. Because the powder and the sand can both fill up the gap in the building stones, but the powder mainly plays a role in bonding, if the powder and the sand can not be uniformly mixed, the final local strength of the concrete is insufficient, and the quality of the concrete is influenced. And the utility model provides an intermittent type formula ready-mixed mortar cement concrete mixing plant is through setting up the mortar ready-mixed machine, stirs powder and sand material in advance, then stirs with the building stones and obtains the concrete finished product, not only can practice thrift the churning time, mixes with the building stones again after powder and sand material misce bene in advance in addition, can make various materials more even mixedly, ensures the quality of concrete.
In the specific implementation process, the stone is also called coarse aggregate, the common stone comprises two types of crushed stone and pebble, the crushed stone is made of natural rock or rock through mechanical crushing and screening, and the particle size of the crushed stone is larger than 4.75 mm; pebbles are rock particles with a particle size of more than 4.75mm, which are formed by natural weathering, water flow transportation, sorting and stacking. Because the building stones are the granule, consequently, there are a lot of first conveyor 500 that can carry building stones to stirring host computer 410, in further embodiment, the utility model discloses in the embodiment first conveyor 500 specifically adopts band conveyer, and band conveyer has the conveying ability reinforce, and the transport distance is far away, and simple structure is easy to maintain, can conveniently carry out programmed control and automation mechanized operation. The continuous or intermittent motion of the conveyer belt is used for conveying the objects below 100KG or powdery and granular objects, the operation is high-speed and stable, the noise is low, and the objects can be conveyed up and down slopes, so that the stone transportation can be greatly met.
In the specific implementation process, the sand material is also called fine aggregate and is divided into natural sand and artificial sand according to the production source; the natural sand is rock particles which are formed by natural weathering, water flow transportation, sorting and accumulation and have the particle size of less than 4.75mm, but does not comprise particles of soft rock and weathered rock; natural sands include river sands, lake sands, mountain sands, and desalinated sea sands. The artificial sand is a general name of machine-made sand and mixed sand which are subjected to soil removal treatment. Although the grain size of sand is small, still be graininess, consequently, can carry sand to mortar premixed machine 420's second conveyor 600 also has a lot of, in further implementation mode, the embodiment of the utility model discloses second conveyor specifically also adopts band conveyer. The belt conveyor has the advantages of strong conveying capacity, long conveying distance, simple structure, easy maintenance and convenient implementation of programmed control and automatic operation. The continuous or intermittent motion of the conveyer belt is used for conveying the objects below 100KG or powdery and granular objects, the operation is high-speed and stable, the noise is low, and the objects can be conveyed up and down slopes, so that the stone transportation can be greatly met.
In specific implementation process, the powder in the concrete is mainly cement and fly ash, because the particle diameter of cement and fly ash is too little, and the quality is too light, receives a bit of wind to blow and will appear the raise dust slightly, not only the polluted environment, still extravagant raw materials, consequently, in order to avoid powder polluted environment, in further embodiment, the embodiment of the utility model provides an in third conveyor adopts the lifting machine, the lifting machine has a confined promotion section of thick bamboo, can avoid the powder to raise out, causes environmental pollution.
In a specific implementation process, although the existing stone storage bin, sand storage bin and powder storage bin are usually provided with metering devices, the metering devices usually obtain the discharge amount by calculating the allowance, but the stirring main machine is an intermittent stirrer, so that the feeding is not continuous, and when the stirring amount at one time is enough, the stirring is stopped suddenly. During sudden stop, due to other reasons such as inertia, partial raw materials, especially stone materials, may be caused to be excessive, so that the actual proportioning cannot be matched with the designed proportioning, the concrete strength cannot meet the design requirement, and the raw materials are wasted. Therefore, in order to improve the accuracy of raw material supply so that the mixed concrete can meet the design requirement, in a further embodiment, the utility model discloses an embodiment is provided with the stone material weighing hopper 110 at the discharge hole of the stone material storage bin 100; a sand material metering hopper 210 is arranged at the discharge hole of the sand material storage bin 200; the discharge hole of the powder storage bin 300 is provided with a powder measuring hopper 310. The embodiment of the utility model provides a through at building stones storage storehouse 100, the discharge gate of sand material storage storehouse 200 and powder storage storehouse 300 sets up building stones weighing hopper 110 respectively, sand material weighing hopper 210, powder weighing hopper 310, before stirring at every turn, earlier supply the building stones of a batching cycle, sand material and powder are put into corresponding building stones weighing hopper 110, in sand material weighing hopper 210 and the powder weighing hopper 310, through building stones weighing hopper 110, the building stones of stirring at every turn are calculated respectively to sand material weighing hopper 210 and powder weighing hopper 310, the supply capacity of sand material and powder, can greatly improve the building stones, the accuracy nature that sand material and powder were supplied with, make the concrete of stirring can satisfy the design demand, also can practice thrift certain raw and other materials cost simultaneously.
In specific implementation, no matter be stirring host computer 410 or mortar premixed machine 420, it realizes that the stirring all needs driving system to provide power, in order to practice thrift manufacturing cost, in further implementation mode, the embodiment of the utility model provides an in stirring host computer 410 and mortar premixed machine 420 connect same driving system. Namely, one power system is used for simultaneously providing power for the stirring main machine 410 and the mortar pre-mixer 420, so that the equipment cost and the production cost can be effectively saved.
In a further embodiment, the mixing main machine 410 and the mortar pre-mixer 420 in the embodiment of the present invention are connected to the power system in the following manner:
the stirring host 410 comprises a stirring box 411, a stirring shaft 412 is arranged in the stirring box 411, one end of the stirring shaft 412 penetrates through one side of the stirring box 411 and is connected with a power device 413, and the other end of the stirring shaft 412 penetrates through the opposite side of the stirring box 411 and is connected with one end of a transmission shaft 414; the mortar pre-mixer 420 comprises a pre-mixing box 421, a pre-mixing shaft 422 is arranged in the pre-mixing box 421, one end of the pre-mixing shaft 422 is rotatably connected with the side wall of one side of the pre-mixing box 421, and the other end of the pre-mixing shaft 422 penetrates through the opposite side of the pre-mixing box 421 and is connected with the other end of the transmission shaft 414; stirring blades are respectively arranged on the stirring shaft 412 and the pre-stirring shaft 422.
Namely: the embodiment of the utility model provides an in stirring host computer 410 and mortar premixed machine 420 have constituteed a linked mixing system, provide power through power device 413 and give (mixing) shaft 412, (mixing) shaft 412 when the pivoted, transmit power for premixed axle 422 again through transmission shaft 414 for premixed axle 422 also rotates thereupon.
The connection mode is simple and applicable, and convenient to maintain.
In concrete implementation, power device has a lot, and in further embodiment, the embodiment of the utility model provides an in power device specifically adopts the motor, and the motor pollutes fewly, and the maintenance is also convenient moreover.
In a specific implementation process, in order to facilitate discharging, in a further embodiment, the stirring blades on the stirring shaft 412 and the pre-stirring shaft 422 in the embodiment of the present invention specifically adopt spiral stirring blades. The spiral stirring blade positively rotates to stir, and the reverse rotation can play a role in conveying, so that the material can be conveniently discharged.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. An intermittent premixed mortar cement concrete mixing plant comprises a stone storage bin, a sand storage bin, a powder storage bin and a mixing main body, and is characterized in that the mixing main body comprises a mixing main machine, a mortar premixing machine, a stone buffer storage bin, a water metering hopper, an additive metering hopper and a finished product bin; the feed inlet of the stirring main machine is respectively connected with the mortar pre-mixer and the discharge outlet of the stone buffer bin, and the discharge outlet of the stirring main machine is connected with the feed inlet of the finished product bin; the discharge hole of the stone storage bin is connected with the stone cache bin through a first conveying device, the discharge hole of the sand storage bin is connected with the feed inlet of the mortar pre-mixer through a second conveying device, and the discharge hole of the powder storage bin is connected with the feed inlet of the mortar pre-mixer through a third conveying device; and the discharge ports of the water metering hopper and the additive metering hopper are connected with the feed port of the mortar pre-mixer through a conveying pipeline.
2. A batch ready mixed mortar cement concrete mixing plant according to claim 1, characterised in that the first conveyor is a belt conveyor.
3. A batch ready mixed mortar cement concrete mixing plant according to claim 1, characterised in that the second conveyor is a belt conveyor.
4. A batch ready mixed mortar cement concrete mixing plant according to claim 1, characterised in that the third conveyor is a hoist.
5. The batch-type ready-mixed mortar cement concrete mixing plant as claimed in claim 1, characterized in that the discharge port of the stone storage bin is provided with a stone measuring hopper; a sand material metering hopper is arranged at a discharge port of the sand material storage bin; and a powder measuring hopper is arranged at a discharge port of the powder storage bin.
6. The batch-type ready-mixed mortar cement concrete mixing plant according to claim 1, characterized in that the main mixer and the mortar ready-mixer are connected to the same power system.
7. The batch-type ready-mixed mortar cement concrete mixing plant according to claim 6, characterized in that the mixing main machine comprises a mixing tank, a mixing shaft is arranged in the mixing tank, one end of the mixing shaft penetrates through one side of the mixing tank and is connected with a power device, and the other end of the mixing shaft penetrates through the opposite side of the mixing tank and is connected with one end of a transmission shaft; the mortar premixing machine comprises a premixing box, wherein a premixing shaft is arranged in the premixing box, one end of the premixing shaft is rotatably connected with the side wall of one side of the premixing box, and the other end of the premixing shaft penetrates through the opposite side of the premixing box and is connected with the other end of the transmission shaft; the stirring shaft and the premixing shaft are respectively provided with stirring blades.
8. The batch ready mixed mortar cement concrete mixing plant of claim 7, wherein the power plant is an electric motor.
9. A batch ready mixed mortar cement concrete mixing plant according to claim 7, characterised in that the mixing blades are helical mixing blades.
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| CN201920697645.3U CN210173920U (en) | 2019-05-15 | 2019-05-15 | Intermittent type formula ready-mixed mortar cement concrete mixing plant |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109968539A (en) * | 2019-05-15 | 2019-07-05 | 成都广维重工科技有限公司 | An intermittent ready-mixed mortar cement concrete mixing plant |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109968539A (en) * | 2019-05-15 | 2019-07-05 | 成都广维重工科技有限公司 | An intermittent ready-mixed mortar cement concrete mixing plant |
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Effective date of registration: 20220809 Address after: 641300 Room 203 for park management services, Zhonghe Town, Yanjiang District, Ziyang City, Sichuan Province Patentee after: Ziyang Guangwei Intelligent Equipment Co.,Ltd. Address before: No. 301, unit 5, building 12, No. 309, NanEr Road, economic development zone, Chengdu, Sichuan 610000 Patentee before: CHENGDU GUANGWEI HEAVY INDUSTRY TECHNOLOGY Co.,Ltd. |