CN107757664B - Effectual mining small handcart of shock attenuation - Google Patents
Effectual mining small handcart of shock attenuation Download PDFInfo
- Publication number
- CN107757664B CN107757664B CN201711069826.3A CN201711069826A CN107757664B CN 107757664 B CN107757664 B CN 107757664B CN 201711069826 A CN201711069826 A CN 201711069826A CN 107757664 B CN107757664 B CN 107757664B
- Authority
- CN
- China
- Prior art keywords
- fixedly connected
- spring
- plate
- shock attenuation
- fixing seat
- 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.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
- B62B3/04—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor involving means for grappling or securing in place objects to be carried; Loading or unloading equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B5/00—Accessories or details specially adapted for hand carts
- B62B5/0006—Bumpers; Safety devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B5/00—Accessories or details specially adapted for hand carts
- B62B5/04—Braking mechanisms; Locking devices against movement
- B62B5/049—Braking mechanisms; Locking devices against movement locking against movement by contacting the floor or a wall
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B2205/00—Hand-propelled vehicles or sledges being foldable or dismountable when not in use
- B62B2205/14—Retractable wheels
- B62B2205/145—Retractable wheels retractable in the direction of the shaft, e.g. with telescopic shafts
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Vibration Dampers (AREA)
Abstract
The invention relates to the technical field of mining transportation equipment, and discloses a mining trolley with a good damping effect. Make the shock attenuation board reciprocate on the slide rail through the inside slide rail of fixing base, first spring through the shock attenuation bottom of the board reduces vibrations, through the buffer board, the apparatus further comprises a rotating shaft, the sleeve pipe, first flexible post and second spring cooperation are used, make things convenient for the slider at the spout internalization of fixing base inner chamber bottom, further disperse vertical decurrent power, it is more convenient when removing to make the universal wheel through the flexible post of second of fixing base bottom and third spring, multiple shock attenuation effect stack reaches the effectual purpose of shock attenuation.
Description
Technical Field
The invention relates to the technical field of mining transportation equipment, in particular to a mining trolley with a good damping effect.
Background
The cart is a transporting vehicle which is pushed and pulled by human power and is the ancestor of all vehicles, and although the material transporting technology of the cart is continuously developed, the cart is still used as an indispensable transporting tool. The trolley is widely used in production and life because of its low cost, simple maintenance, convenient operation, light weight, ability to work in places where motor vehicles are not convenient to use, and convenience in carrying lighter objects in short distance.
At present, the cart can be adopted when China is engaged in mining transportation, but the stability effect of the existing cart is poor, the shock absorption is not good, the ore is shaken greatly when being transported due to the fact that the ground of mining work is hollow, the transportation is hard, the ore is shaken off easily, accidents are caused easily, the life safety of workers is protected, the work efficiency is improved, and therefore the cart with the good shock absorption effect is provided.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the mining trolley with good damping effect, which has the advantages of good damping effect and the like, and solves the problem of large shaking and difficult transportation.
(II) technical scheme
In order to achieve the purpose of good damping effect, the invention provides the following technical scheme: a mining trolley with good damping effect comprises a trolley body, wherein a fixed seat is fixedly connected to the bottom of the trolley body, a rotating rod is fixedly connected to one side of the fixed seat, a baffle is mounted on the rotating rod, a bolt is mounted on the trolley body, one side of the trolley body is movably connected with the baffle through the bolt, a trolley frame is fixedly connected to the other side of the trolley body, a push rod is fixedly connected to one side of the trolley frame, a handle is fixedly connected to one side of the push rod, a notch is formed in the fixed seat, slide rails are fixedly connected to two sides of an inner cavity of the fixed seat, a damping plate is movably connected to the inner part of each slide rail, first springs are fixedly connected to two sides of the bottom of each damping plate, a buffer plate is fixedly connected to the middle of the bottom of each damping plate, rotating shafts are fixedly connected to two, the telescopic bottom fixedly connected with first flexible post, the second spring has been cup jointed on the first flexible post, the bottom fixedly connected with slider of first flexible post, the spout has been seted up of fixing base inner chamber, and the inside swing joint of spout has the slider, the equal fixedly connected with second flexible post in bottom both sides of fixing base, the third spring has been cup jointed on the flexible post of second, the bottom fixedly connected with extension board of third spring, the bottom fixedly connected with universal wheel of extension board, threaded connection has the threaded rod on the extension board, and the threaded rod is located one side of universal wheel, the bottom fixedly connected with support of threaded rod.
Preferably, the damping plate is internally provided with a damping layer, and the damping layer is a rubber plate.
Preferably, the bottom of the support is provided with anti-skid lines, and the anti-skid lines are wavy.
Preferably, the bottom of the first spring is fixedly connected with a limiting seat, and the limiting seat is U-shaped.
Preferably, the outer side of the handle is sleeved with a protection pad, and the protection pad is a rubber sleeve.
Preferably, the number of the universal wheels is four, and every two universal wheels are a group and are symmetrically distributed at the bottom of the support plate by taking the central line of the fixed seat as an axis.
(III) advantageous effects
Compared with the prior art, the invention provides a small mining cart with a good damping effect, which has the following beneficial effects:
1. this effectual mining small handcart of shock attenuation, slide rail through fixing base inside makes the shock attenuation board reciprocate on the slide rail, first spring through the shock attenuation bottom of the board reduces vibrations, through the buffer board, the apparatus further comprises a rotating shaft, the sleeve pipe, first flexible post and second spring cooperation are used, make things convenient for the slider at the spout internalization of fixing base inner chamber bottom, further disperse vertical decurrent power, dual shock attenuation, it is stronger to make the automobile body bearing capacity, the flexible post of second and third spring through the fixing base bottom make the universal wheel more convenient when removing, multiple shock attenuation effect stack, reach the effectual purpose of shock attenuation.
2. This effectual mining small handcart of shock attenuation through the bolt swing joint baffle of installation on the automobile body, and is convenient fixed, prevents that the ore from dropping, through the baffle that moves about, conveniently feeds and unloads, and is more convenient laborsaving, and threaded rod through threaded connection on the extension board makes support and ground contact, makes things convenient for fixed shallow, prevents that the shallow displacement from taking place accident, this shallow simple structure, convenient to use, the practicality is strong.
Drawings
FIG. 1 is a schematic cross-sectional view of the structure of the present invention;
FIG. 2 is an enlarged view of the point A in FIG. 1.
In the figure: the device comprises a vehicle body 1, a fixed seat 2, a rotating rod 3, a baffle 4, a bolt 5, a vehicle frame 6, a push rod 7, a handle 8, a slide rail 9, a damping plate 10, a first spring 11, a buffer plate 12, a rotating shaft 13, a sleeve 14, a first telescopic column 15, a second spring 16, a sliding block 17, a second telescopic column 18, a third spring 19, a support plate 20, a universal wheel 21, a threaded rod 22 and a support 23.
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. 1-2, a mining trolley with good damping effect comprises a trolley body 1, a fixed seat 2 is fixedly connected to the bottom of the trolley body 1, a rotating rod 3 is fixedly connected to one side of the fixed seat 2, a baffle 4 is mounted on the rotating rod 3, a bolt 5 is mounted on the trolley body 1, one side of the trolley body 1 is movably connected with the baffle 4 through the bolt 5, the baffle 4 is movably connected through the bolt 5 mounted on the trolley body 1, the mining trolley is convenient to fix and prevent ores from falling, loading and unloading are facilitated through the movable baffle 4, more convenience and labor saving are achieved, a trolley frame 6 is fixedly connected to the other side of the trolley body 1, a push rod 7 is fixedly connected to one side of the trolley frame 6, a handle 8 is fixedly connected to one side of the push rod 7, a protective pad is sleeved on the outer side of the handle 8, the protective pad is a rubber sleeve, the comfort level, and the two sides of the inner cavity of the fixed seat 2 are fixedly connected with slide rails 9, the interior of the slide rails 9 is movably connected with a damping plate 10, the interior of the damping plate 10 is provided with a damping layer which is a rubber plate, the two sides of the bottom of the damping plate 10 are fixedly connected with first springs 11, the bottom of the first springs 11 is fixedly connected with a limiting seat, the limiting seat is in a U shape, the limiting first springs 11 are vertically downward to prevent the first springs 11 from displacing, the middle part of the bottom of the damping plate 10 is fixedly connected with a buffer plate 12, the two sides of the bottom of the buffer plate 12 are fixedly connected with rotating shafts 13, the bottom of the rotating shafts 13 is movably connected with a sleeve 14, the bottom of the sleeve 14 is fixedly connected with first telescopic columns 15, the first telescopic columns 15 are sleeved with second springs 16, the bottom of the first telescopic columns 15 is fixedly connected with sliding blocks 17, the damping plate 10 sinks by putting ores into the car body 1, the first, the bottom sleeve 14 of the rotating shaft 13 drives the first telescopic column 15, so that the sliding block 17 moves in a sliding groove formed in the fixing seat 2 to reduce vibration, the sliding groove is formed in the inner cavity of the fixing seat 2, the sliding block 17 is movably connected in the sliding groove, the second telescopic column 18 is fixedly connected to both sides of the bottom of the fixing seat 2, the third spring 19 is sleeved on the second telescopic column 18, the damping plate 10 moves up and down on the sliding rail 9 through the sliding rail 9 in the fixing seat 2, vibration is reduced through the first spring 11 at the bottom of the damping plate 10, the buffer plate 12, the rotating shaft 13, the sleeve 14, the first telescopic column 15 and the second spring 16 are matched for use, the sliding block 17 can conveniently move in the sliding groove at the bottom of the inner cavity of the fixing seat 2, vertical downward force is further dispersed, double damping is realized, the bearing capacity of the vehicle body 1 is stronger, the universal wheel 21 is more convenient to move through the second telescopic column 18 and the third spring 19 at, multiple shock attenuation effect stack, reach the effectual purpose of shock attenuation, the bottom fixedly connected with extension board 20 of third spring 19, the bottom fixedly connected with universal wheel 21 of extension board 20, the quantity of universal wheel 21 is four, and per two universal wheels 21 are a set of central line that uses fixing base 2 as the bottom of axle center symmetric distribution at extension board 20, threaded connection has threaded rod 22 on the extension board 20, and threaded rod 22 is located one side of universal wheel 21, the bottom fixedly connected with support 23 of threaded rod 22, anti-skidding line has been seted up to the bottom of support 23, and the shape of anti-skidding line is the wave, threaded rod 22 through threaded connection on the extension board 20 makes support 23 and ground contact, make things convenient for the fixed shallow, prevent that the shallow displacement from taking place accident, this shallow simple structure, high durability and convenient use, therefore, the clothes hanger is strong in.
The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.
To sum up, the mining trolley with good damping effect enables the damping plate 10 to move up and down on the sliding rail 9 through the sliding rail 9 inside the fixed seat 2, the vibration is reduced through the first spring 11 at the bottom of the damping plate 10, the buffer plate 12, the rotating shaft 13, the sleeve 14, the first telescopic column 15 and the second spring 16 are matched for use, the sliding block 17 can move in the sliding groove at the bottom of the inner cavity of the fixed seat 2 conveniently, the vertical downward force is further dispersed, the bearing capacity of the trolley body 1 is stronger due to double damping, the universal wheel 21 can move more conveniently through the second telescopic column 18 and the third spring 19 at the bottom of the fixed seat 2, multiple damping effects are superposed, the aim of good damping effect is achieved, the supporting seat 23 is in contact with the ground through the bolt 5 movably connected with the baffle 4 installed on the trolley body 1, the ore is convenient to fix, the loading and unloading are facilitated through the movable baffle 4, the supporting seat 23 is more convenient and labor-saving, the threaded rod 22 in threaded connection with, the trolley is convenient to fix, accidents caused by trolley displacement are prevented, and the trolley is simple in structure, convenient to use and high in practicability.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (1)
1. The utility model provides an effectual mining small handcart of shock attenuation, includes automobile body (1), its characterized in that: the shock absorption vehicle is characterized in that a fixing seat (2) is fixedly connected to the bottom of the vehicle body (1), a rotating rod (3) is fixedly connected to one side of the fixing seat (2), a baffle (4) is installed on the rotating rod (3), a bolt (5) is installed on the vehicle body (1), one side of the vehicle body (1) is movably connected with the baffle (4) through the bolt (5), a vehicle frame (6) is fixedly connected to the other side of the vehicle body (1), a push rod (7) is fixedly connected to one side of the vehicle frame (6), a handle (8) is fixedly connected to one side of the push rod (7), a notch is formed in the fixing seat (2), sliding rails (9) are fixedly connected to two sides of an inner cavity of the fixing seat (2), a shock absorption plate (10) is movably connected to the inside of the sliding rails (9), first springs (11) are fixedly connected, the middle part of the bottom of the damping plate (10) is fixedly connected with a buffer plate (12), two sides of the bottom of the buffer plate (12) are fixedly connected with a rotating shaft (13), the bottom of the rotating shaft (13) is movably connected with a sleeve (14), the bottom of the sleeve (14) is fixedly connected with a first telescopic column (15), a second spring (16) is sleeved on the first telescopic column (15), the bottom of the first telescopic column (15) is fixedly connected with a sliding block (17), a sliding groove is formed in the inner cavity of the fixing seat (2), the sliding groove is internally and movably connected with the sliding block (17), two sides of the bottom of the fixing seat (2) are fixedly connected with a second telescopic column (18), the second telescopic column (18) is sleeved with a third spring (19), the bottom of the third spring (19) is fixedly connected with a support plate (20), and the bottom of the support plate (20) is fixedly connected with a universal wheel (21), a threaded rod (22) is connected to the support plate (20) in a threaded manner, the threaded rod (22) is located on one side of the universal wheel (21), and a support (23) is fixedly connected to the bottom of the threaded rod (22); a damping layer is arranged in the damping plate (10), and the damping layer is a rubber plate; the bottom of the support (23) is provided with anti-skid lines, and the anti-skid lines are wavy; the bottom of the first spring (11) is fixedly connected with a limiting seat, and the limiting seat is U-shaped; the outer side of the handle (8) is sleeved with a protective pad which is a rubber sleeve; the number of the universal wheels (21) is four, and every two universal wheels (21) are a group and are symmetrically distributed at the bottom of the support plate (20) by taking the central line of the fixed seat (2) as an axis.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711069826.3A CN107757664B (en) | 2017-11-03 | 2017-11-03 | Effectual mining small handcart of shock attenuation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711069826.3A CN107757664B (en) | 2017-11-03 | 2017-11-03 | Effectual mining small handcart of shock attenuation |
Publications (2)
Publication Number | Publication Date |
---|---|
CN107757664A CN107757664A (en) | 2018-03-06 |
CN107757664B true CN107757664B (en) | 2020-01-17 |
Family
ID=61273168
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201711069826.3A Active CN107757664B (en) | 2017-11-03 | 2017-11-03 | Effectual mining small handcart of shock attenuation |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN107757664B (en) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108187107A (en) * | 2018-03-26 | 2018-06-22 | 王传江 | Medical appliances sterilizing cabinet |
CN108639626B (en) * | 2018-05-14 | 2020-11-17 | 山东佳和保护膜有限公司 | Carrying cart for garbage disposal |
CN109080674B (en) * | 2018-06-21 | 2021-03-09 | 张晓娜 | Temporary medicament moving device with good damping performance for medicine |
CN108946009B (en) * | 2018-07-12 | 2020-06-09 | 杭州科技职业技术学院 | Flexible manufacturing system for laser cutting |
CN109094752A (en) * | 2018-07-20 | 2018-12-28 | 浙江海洋大学 | A kind of deck cleaning device facilitating limit |
CN108945058B (en) * | 2018-07-25 | 2019-11-22 | 山西友成信达项目管理咨询有限公司 | A kind of handling device for road and bridge side brick |
CN109050607A (en) * | 2018-08-16 | 2018-12-21 | 杭州金知科技有限公司 | A kind of assembly material transport vehicle for building facilitating batch turning |
CN109626259A (en) * | 2018-10-31 | 2019-04-16 | 南京荣强仓储有限公司 | A kind of storage transport vehicle that damping performance is good |
CN109866844B (en) * | 2019-01-24 | 2020-09-04 | 杭州志远科技有限公司 | Mobile geographic information system data acquisition device |
CN110217494B (en) * | 2019-06-12 | 2020-09-01 | 常山兴佳液压设备有限公司 | Hydraulic damping carrying device for logistics transportation |
CN110448947A (en) * | 2019-08-19 | 2019-11-15 | 浙江省海洋水产养殖研究所 | A kind of marine stable Suction filtration device |
CN110758499A (en) * | 2019-10-12 | 2020-02-07 | 广州市欧伊若科技有限公司 | Overload-prevention type conveying device for production and processing of titanium alloy plates |
CN110816608B (en) * | 2019-11-20 | 2022-05-17 | 耒阳市亚湘电子科技有限公司 | Pin is punched and is cut processing and use conveyer |
CN111135679A (en) * | 2019-12-11 | 2020-05-12 | 陕西铭泊停车服务有限公司 | Control device for parking lot |
CN110979413A (en) * | 2019-12-27 | 2020-04-10 | 冯志君 | Damping cart for material transportation |
CN111532319A (en) * | 2020-05-10 | 2020-08-14 | 陈吉梅 | Transfer base for damping type mechanical equipment and use method |
CN111716620A (en) * | 2020-07-20 | 2020-09-29 | 滁州精峰机电科技有限公司 | Foaming filling trolley travelling mechanism |
CN112224627B (en) * | 2020-09-07 | 2022-12-13 | 盐城神华机械制造有限公司 | Chemical industry pipe transportation device with stability |
CN114223385A (en) * | 2021-12-13 | 2022-03-25 | 塔里木大学 | Green manure that can multistage speed governing smashes still field machine |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN204184383U (en) * | 2014-11-19 | 2015-03-04 | 齐齐哈尔市宝宏科技有限公司 | A kind of building ground hand barrow |
CN206327419U (en) * | 2016-12-01 | 2017-07-14 | 重庆三峡学院 | A kind of life stroller for being easy to damping |
CN207045368U (en) * | 2017-06-19 | 2018-02-27 | 绍兴柯桥骏达针纺织品有限公司 | A kind of building stroller of good damping effect |
CN206900435U (en) * | 2017-07-12 | 2018-01-19 | 鹰潭市众鑫成铜业有限公司 | A kind of copper strips transport small handcart of damping |
-
2017
- 2017-11-03 CN CN201711069826.3A patent/CN107757664B/en active Active
Also Published As
Publication number | Publication date |
---|---|
CN107757664A (en) | 2018-03-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN107757664B (en) | Effectual mining small handcart of shock attenuation | |
CN208055831U (en) | A kind of road evenness detection device easy to remove | |
CN206900435U (en) | A kind of copper strips transport small handcart of damping | |
CN105329296A (en) | Tire containing and conveying cart | |
CN105346573A (en) | Electric carrying trolley | |
CN210363878U (en) | Transport trolley for building materials | |
CN205168579U (en) | Tire is placed and is transported shallow | |
CN108639167B (en) | Rollover prevention device for automobile | |
CN207157264U (en) | A kind of weaving trolley easy to remove | |
CN201309500Y (en) | Equipment for placing center hole of wheel rim belt | |
CN205771442U (en) | A kind of inclination transmitting device of tyre production streamline | |
CN207540226U (en) | Refrigerator-freezer rack that is a kind of easy to remove and placing | |
CN210310443U (en) | Be used for oil drum carrier | |
CN212313606U (en) | Travelling car convenient to mechanical equipment installation | |
CN210558789U (en) | Sightseeing elevator car shock-absorbing structure | |
CN104986192B (en) | A kind of ore cart | |
CN214013909U (en) | Smart mobile phone charging case | |
CN205059681U (en) | Tire conveyor | |
CN207631407U (en) | A kind of three-wheel battery vehicle protective fence | |
US2237855A (en) | Spindle mounting for trucks | |
CN205611984U (en) | Suitcase with auxiliary wheel | |
CN215971600U (en) | Logistics operation vehicle with good protection performance | |
CN216269440U (en) | Furniture storage and transportation device | |
CN220996472U (en) | Material pushing vehicle for constructional engineering | |
CN218839550U (en) | Handcart safety structure |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
TA01 | Transfer of patent application right | ||
TA01 | Transfer of patent application right |
Effective date of registration: 20191223 Address after: 243100 stone Anhui city in Ma'anshan Province town of Dangtu County Applicant after: MAANSHAN LIXIN MACHINERY MANUFACTURING CO., LTD. Address before: No. 11 Yifeng Road Industrial Park, Xiangshan District, Huaibei City, Anhui Province Applicant before: She Feng |
|
GR01 | Patent grant | ||
GR01 | Patent grant |