CN109674190B - Weight-bearing migration parcel reverse action eliminating back frame - Google Patents
Weight-bearing migration parcel reverse action eliminating back frame Download PDFInfo
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- CN109674190B CN109674190B CN201811650887.3A CN201811650887A CN109674190B CN 109674190 B CN109674190 B CN 109674190B CN 201811650887 A CN201811650887 A CN 201811650887A CN 109674190 B CN109674190 B CN 109674190B
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- guide
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- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45F—TRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY
- A45F3/00—Travelling or camp articles; Sacks or packs carried on the body
- A45F3/10—Pack-frames carried on the body
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- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45F—TRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY
- A45F3/00—Travelling or camp articles; Sacks or packs carried on the body
- A45F3/14—Carrying-straps; Pack-carrying harnesses
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- Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
- Portable Outdoor Equipment (AREA)
Abstract
The invention discloses a back frame for eliminating the reverse action of load-bearing migration parcel, and discloses a back frame which utilizes the combined action of a spiral magnetization strip and an elastic rope to buffer and offset the movement of a bag body. Directly over the bottom sprag board was arranged in to its characterized in that fixed frame, on the bottom sprag board was arranged respectively in to two guide bar one ends, the other end was arranged fixed frame respectively in, the guide bar is vertical to be placed, the spiral magnetization strip has been put on the guide bar surface, and two stand pipes overlap respectively and arrange in on two guide bars, the stand pipe inner wall is overhead to have the spiral magnetization strip, and magnetism is the same with the spiral magnetization strip on guide bar surface, and spiral magnetization strip on the stand pipe inner wall and the spiral magnetization strip that corresponds the guide bar surface are crisscross, and two spacing rings overlap respectively and arrange in on two guide bars, and lie in the stand pipe top that corresponds respectively, the spacing ring overhead has fastening screw, and the both ends of bottom sprag board are arranged respectively in to two main part pipe one ends, and the other end upwards wears out from fixed frame respectively.
Description
Technical Field
The invention discloses a back frame for eliminating reverse action of load-bearing migration packages, relates to a back frame for counteracting reverse acting force of a back-bearing package in a human body load-bearing moving process, and belongs to the field of logistics transportation. In particular to a back frame which utilizes the combined action of a spiral magnetized strip and an elastic rope to buffer and offset the movement of a bag body.
Background
At present, in outdoor activities, daily life, logistics distribution and other occasions, the load bearing is needed to be carried out through the backpack, articles are placed in the backpack and are convenient to carry and store, but when the existing backpack is carried on the back, the backpack body and the shoulder straps are integrated, in the moving process, the backpack body can beat up and down along with the moving steps of the human body, the backpack body is flapped on the waist or the hip, the burden of the waist and the hip is increased, particularly, in the logistics distribution, the wrapping in the backpack body is more and is independently placed, in the moving process, not only impact is formed on the human body, but also collision can occur among the wrapping in the backpack body, the distribution of the wrapping is influenced, under the condition of catching up time, running is needed, the conditions of the bumping aggravation of the backpack body along with the running stride and the change of the steps and the frequency and the impact on the human body are increased, the balance of the human body is influenced, the conditions such as falling easily occur, and the inertia of the backpack body in the moving process, the acceleration of the bag body changes, so that the pressure on the shoulder is increased, and the problems of shoulder damage and the like are easily caused.
Disclosure of Invention
In order to improve the situation, the back frame for eliminating the reverse action of the load-bearing migration parcel is provided with a back frame which utilizes the combined action of a spiral magnetization strip and an elastic rope to buffer and offset the movement of a bag body. Can reduce the in-process inclusion range of beating of running, reduce the dynamics of patting to the human body.
The invention discloses a back frame for eliminating the reverse action of load-bearing migration parcel, which is realized by the following steps: the invention relates to a back frame for eliminating the reverse effect of load migration wrapping, which consists of a main body tube, a fixed frame, a loading plate, shoulder straps, a waistband, a fixed pulley, a bottom support plate, an elastic rope, a connecting buckle, guide tubes, guide rods, limiting rings and spiral magnetization strips, wherein the fixed frame is arranged right above the bottom support plate, one ends of the two guide rods are respectively arranged on the bottom support plate, the other ends of the two guide rods are respectively arranged on the fixed frame, the guide rods are vertically arranged, the surfaces of the guide rods are provided with the spiral magnetization strips, the two guide tubes are respectively sleeved on the two guide rods, the inner walls of the guide tubes are provided with the spiral magnetization strips, the magnetism of the spiral magnetization strips is the same as that of the surfaces of the guide rods, the spiral magnetization strips on the inner walls of the guide tubes are staggered with the spiral magnetization strips on the surfaces of the corresponding guide rods, the two limiting rings are respectively sleeved on the two guide rods and are respectively positioned above the corresponding guide tubes, the limiting ring is provided with a fastening screw, one end of each of two main body pipes is respectively arranged at two ends of the bottom supporting plate, the other end of each main body pipe penetrates out of the fixing frame upwards respectively, the main body pipes are connected with the fixing frame, the main body pipes are obliquely arranged, the two main body pipes are respectively connected with the adjacent guide rods through connecting buckles, the distance between each main body pipe and the adjacent guide rods is gradually increased from bottom to top, the two fixed pulleys are respectively arranged on the bottom supporting plate and positioned between the two guide rods, the two fixed pulleys are respectively arranged at the bottom of the fixing frame and correspond to the two fixed pulleys on the bottom supporting plate one by one, one end of each elastic rope is respectively arranged on the fixing frame through a fixing lug, the other end of each elastic rope respectively bypasses the two fixed pulleys on the bottom support and then respectively bypasses the corresponding fixed pulleys on the fixing frame, the loading plate is arranged between the two elastic ropes and is respectively connected with the other ends of the two elastic ropes, the loading plate is provided with a fixing hole, the distance between the end part of the loading plate and the adjacent elastic rope is 2-3 times of the diameter of the elastic rope, the shoulder belt is arranged on one side of the fixing frame and is respectively connected with the two main body pipes through a fixing sleeve, the waist belt is arranged at the bottom of the shoulder belt and is integrally formed with the shoulder belt, the waist belt is respectively connected with the two main body pipes through the fixing sleeve, a binding belt is arranged on the waist belt, and the main body pipes, the guide rod, the guide pipe, the fixing frame and the bottom supporting plate are all made of ultra-light materials.
When the bag is used, the ropes on the two sides of the bag are respectively fixed on the two guide pipes, the middle part of the bag is fixed on the loading plate through the ropes in a binding manner, the shoulder straps are sleeved on the shoulders of a person to be carried on the back, the waist belt is bound on the waist, the guide pipes and the loading plate are stressed downwards, the bag is stressed and transmits the force to the loading plate and the guide pipes in the running process of the person, the loading plate drives the elastic ropes to move, the loading plate further buffers the bag to a certain degree through the elastic ropes to reduce the pressure of the bag on the shoulders of the person, the elastic ropes move along the fixed pulleys, the spiral magnetized strips on the inner walls of the two guide pipes interact with the spiral magnetized strips on the surfaces of the guide rods to counteract the force on the guide pipes, the guide pipes are prevented from moving up and down, the two guide pipes limit the two sides of the bag, the force on the bag in the running process of the person is eliminated, and the jumping amplitude of the bag in the running process is reduced, the impact on the human body is reduced, the mutual collision force among the packages in the bag is also reduced, the safety is improved, and the pressure of the bag on the shoulders of the human body in the running process is further reduced;
the inner wall of the guide pipe is provided with a spiral magnetization strip, and the spiral magnetization strip has the same design as the spiral magnetization strip on the surface of the guide rod, so that the guide pipe and the guide rod can be mutually exclusive;
the design that the spiral magnetization strips on the inner wall of the guide pipe are staggered with the spiral magnetization strips on the surface of the corresponding guide rod can enable the upper side and the lower side of the spiral magnetization strips on the inner wall of the guide pipe to be subjected to repulsive force when the guide pipe is stressed to move, so that the movement of the guide pipe is blocked, and the stress of the guide pipe is counteracted;
the design of the fastening screw is arranged on the limiting ring, so that the position of the limiting ring on the guide rod can be adjusted, and then the limiting ring is fixed through the fastening screw;
the distance between the main body pipe and the adjacent guide rods is gradually increased from bottom to top, so that the bag is suitable for the characteristic that the upper body of a human body slightly leans forward during running, and the bag is kept in a vertical state and does not lean forward;
the loading plate is provided with a fixing hole, so that the middle part of the bag can be conveniently fixed on the loading plate through the fixing hole;
the distance between the end part of the loading plate and the adjacent elastic rope is 2-3 times of the diameter of the elastic rope, so that the distance between the loading plate and the elastic rope can be ensured, and the contact obstruction between the loading plate and the elastic rope is avoided;
the waistband is provided with a bandage, so that the waistband can be bound and fixed on the waist of a human body;
the main body pipe, the guide rod, the guide pipe, the fixing frame and the bottom support plate are all made of ultra-light materials, so that the whole weight of the portable backpack type electric appliance is light, and the portable backpack type electric appliance is convenient to carry;
the guide pipe is matched with the spiral magnetized strips on the guide rod, and the design of offsetting forces on two sides of the bag can limit the movement of the bag from two sides of the bag, offset the stress of the bag and reduce the bounce of the bag;
the loading plate is matched with the elastic rope, the stress of the bag is buffered, the pressure of the bag on the shoulders of the human body can be relieved, and the damage to the shoulders of the human body is avoided;
the purpose of utilizing the combined action of the spiral magnetized strip and the elastic rope to buffer and offset the movement of the bag body is achieved.
Has the beneficial effects.
Firstly, the jumping amplitude of the bag body in the running process can be reduced, and the beating force to the human body is reduced.
And secondly, the pressure on the shoulders of the human body can be reduced.
Thirdly, the convenient disassembly is independent of the bag body, and the application range is wide.
Drawings
Fig. 1 is a three-dimensional structure diagram of a back frame for eliminating the reverse effect of load-bearing migration parcel of the present invention.
Fig. 2 is a three-dimensional structure diagram of a back frame guide rod for eliminating the reverse effect of load-bearing migration parcel.
In the attached drawings
Wherein the parts are: the device comprises a main body pipe (1), a fixing frame (2), a loading plate (3), shoulder straps (4), a waistband (5), a fixed pulley (6), a bottom supporting plate (7), an elastic rope (8), a connecting buckle (9), a guide pipe (10), a guide rod (11), a limiting ring (12) and a spiral magnetization strip (13).
The specific implementation mode is as follows:
the invention discloses a back frame for eliminating the reverse action of load-bearing migration parcel, which is realized by the following steps: the invention relates to a load-bearing migration encapsulation reverse action elimination back frame which comprises a main body tube (1), a fixing frame (2), a loading plate (3), shoulder straps (4), a waistband (5), fixed pulleys (6), a bottom supporting plate (7), elastic ropes (8), connecting buckles (9), guide tubes (10), guide rods (11), limiting rings (12) and spiral magnetization strips (13), wherein the fixing frame (2) is arranged right above the bottom supporting plate (7), one ends of the two guide rods (11) are respectively arranged on the bottom supporting plate (7), the other ends of the two guide rods (11) are respectively arranged on the fixing frame (2), the guide rods (11) are vertically arranged, the surfaces of the guide rods (11) are provided with the spiral magnetization strips (13), the two guide tubes (10) are respectively sleeved on the two guide rods (11), the inner walls of the guide tubes (10) are provided with the spiral magnetization strips (13), and the magnetism of the spiral magnetization strips (13) is the same as that of the surfaces of the guide rods (11), spiral magnetization strip (13) on stand pipe (10) inner wall and spiral magnetization strip (13) that correspond guide bar (11) surface are crisscross mutually, and two spacing rings (12) are respectively arranged in two guide bar (11) cover, and are located corresponding stand pipe (10) top respectively, the fastening screw has been put on spacing ring (12), and the both ends of bottom sprag board (7) are arranged respectively in to two main part pipe (1) one end, and the other end upwards wears out from fixed frame (2) respectively, main part pipe (1) and fixed frame (2) are connected, main part pipe (1) slant is placed, and two main part pipe (1) are connected through connector link (9) and adjacent guide bar (11) respectively, the distance between main part pipe (1) and adjacent guide bar (11) upwards increases from down gradually, and bottom sprag wheel (7) are arranged respectively in to two fixed pulley (6), and is positioned between two guide rods (11), two fixed pulleys (6) are respectively arranged at the bottom of the fixed frame (2) and are in one-to-one correspondence with the two fixed pulleys (6) on the bottom support plate (7), one ends of two elastic ropes (8) are respectively arranged on the fixed frame (2) through fixing lugs, the other ends of the two elastic ropes are respectively wound around the two fixed pulleys (6) on the bottom support, and are respectively wound around the corresponding fixed pulleys (6) on the fixed frame (2), a loading plate (3) is arranged between the two elastic ropes (8) and is respectively connected with the other ends of the two elastic ropes (8), a fixing hole is arranged on the loading plate (3), the distance between the end part of the loading plate (3) and the adjacent elastic ropes (8) is 2-3 times of the diameter of the elastic ropes (8), a shoulder belt (4) is arranged at one side of the fixed frame (2) and is respectively connected with the two main body pipes (1) through a fixing sleeve, the waistband (5) is arranged at the bottom of the shoulder strap (4) and integrally formed with the shoulder strap (4), the waistband (5) is connected with the two main body pipes (1) through a fixing sleeve respectively, a bandage is arranged on the waistband (5), and the main body pipes (1), the guide rods (11), the guide pipes (10), the fixing frame (2) and the bottom supporting plate (7) are made of ultra-light materials.
When the bag is used, firstly, ropes on two sides of the bag are respectively fixed on two guide pipes (10), the middle of the bag is fixed on a loading plate (3) in a binding mode through the ropes, shoulder straps (4) are sleeved on shoulders of a person to be born, a waist belt (5) is tied on the waist of the person, the guide pipes (10) and the loading plate (3) are stressed downwards, the bag is stressed and transmits force to the loading plate (3) and the guide pipes (10) in the running process of the person, the loading plate (3) drives an elastic rope (8) to move, then the loading plate (3) buffers the bag to a certain degree through the elastic rope (8), the pressure of the bag body on the shoulders of the human body is reduced, the elastic rope (8) moves along a fixed pulley (6), spiral magnetized strips (13) on the inner walls of the two guide pipes (10) interact with spiral magnetized strips (13) on the surfaces of guide rods (11), and the force borne by the guide pipes (10) is offset, the guide pipes (10) are prevented from moving up and down, and then the two guide pipes (10) limit the two sides of the bag, so that the force applied to the bag in the running process of personnel is eliminated, the jumping amplitude of the bag in the running process is reduced, the impact on a human body is reduced, the mutual collision force among packages in the bag is also reduced, the safety is improved, and the pressure of the bag on the shoulders of the human body in the running process is further reduced;
the inner wall of the guide pipe (10) is provided with a spiral magnetized strip (13), and the spiral magnetized strip (13) with the same magnetism as the surface of the guide rod (11) has the design that the guide pipe (10) and the guide rod (11) can be mutually repelled;
the design that the spiral magnetized strips (13) on the inner wall of the guide pipe (10) and the spiral magnetized strips (13) corresponding to the surface of the guide rod (11) are staggered, so that when the guide pipe (10) moves under stress, the upper side and the lower side of the spiral magnetized strips (13) on the inner wall of the guide pipe (10) are subjected to repulsive force, the movement of the guide pipe (10) is further hindered, and the stress of the guide pipe (10) is counteracted;
the design of a fastening screw is arranged on the limiting ring (12), so that the position of the limiting ring (12) on the guide rod (11) can be adjusted, and then the limiting ring is fixed through the fastening screw;
the distance between the main body pipe (1) and the adjacent guide rods (11) is gradually increased from bottom to top, so that the bag adapts to the characteristic that the upper body of a human body slightly leans forward during running, and the bag is kept in a vertical state and does not lean forward;
the loading plate (3) is provided with a fixing hole, so that the middle part of the bag can be conveniently fixed on the loading plate (3) through the fixing hole;
the distance between the end part of the loading plate (3) and the adjacent elastic rope (8) is 2-3 times of the diameter of the elastic rope (8), so that the distance between the loading plate (3) and the elastic rope (8) can be ensured, and the contact obstruction of the loading plate (3) and the elastic rope (8) is avoided;
the waistband (5) is provided with a bandage, so that the waistband (5) can be bound and fixed on the waist of a human body;
the main body pipe (1), the guide rod (11), the guide pipe (10), the fixing frame (2) and the bottom support plate (7) are all made of ultra-light materials, so that the whole weight of the portable backpack type portable electric appliance is light, and the portable backpack type portable electric appliance is convenient to carry;
the guide pipe (10) is matched with the spiral magnetized strips (13) on the guide rod (11) to counteract the force on two sides of the bag, so that the movement of the bag can be limited from two sides of the bag, the stress on the bag is counteracted, and the bounce of the bag is reduced;
the loading plate (3) is matched with the elastic rope (8) to buffer the stress of the bag, so that the pressure of the bag on the shoulders of a human body can be relieved, and the damage to the shoulders of the human body is avoided;
the purpose of utilizing the combined action of the spiral magnetized strip (13) and the elastic rope (8) to buffer and offset the movement of the bag body is achieved.
Claims (9)
1. A load-bearing migration parcel reverse action eliminating back frame is characterized in that: the device comprises a main body pipe, a fixing frame, a loading plate, shoulder belts, a waistband, fixed pulleys, a bottom supporting plate, elastic ropes, a connecting buckle, guide pipes, guide rods, limiting rings and spiral magnetized strips, wherein the fixing frame is arranged right above the bottom supporting plate, one ends of the two guide rods are respectively arranged on the bottom supporting plate, the other ends of the two guide rods are respectively arranged on the fixing frame, the guide rods are vertically arranged, the spiral magnetized strips are arranged on the surfaces of the guide rods, the two guide pipes are respectively sleeved on the two guide rods, the two limiting rings are respectively sleeved on the two guide rods and are respectively positioned above the corresponding guide pipes, one ends of the two main body pipes are respectively arranged at the two ends of the bottom supporting plate, the other ends of the two main body pipes respectively penetrate out of the fixing frame upwards, the main body pipe is connected with the fixing frame, the main body pipes are obliquely arranged, the two main body pipes are respectively connected with the adjacent guide rods through the connecting buckle, and the two fixed pulleys are respectively arranged on the bottom supporting plate, and be located between two guide bars, fixed frame bottom is arranged respectively in to two fixed pulleys, and with two fixed pulley one-to-one in the bottom sprag board, on the fixed frame was arranged in through fixed ear respectively to the one end of two elasticity ropes, two fixed pulleys on the bottom sprag were walked around respectively to the other end, then walked around on the fixed frame corresponding fixed pulley respectively, between two elasticity ropes was arranged in to the load plate, and was connected with the other end of two elasticity ropes respectively, it has the fixed orifices to open on the load plate, and fixed frame one side is arranged in to the baldric, and is connected with two main part pipes through fixed cover respectively, and the bottom of baldric is arranged in to the waistband, and baldric integrated into one piece, the waistband is connected through fixed cover and two main part pipes respectively, the waistband overhead bandage that has.
2. The weight-bearing migrating migration encapsulation reverse action eliminating back frame according to claim 1, wherein a spiral magnetization strip is arranged on the inner wall of the guide tube, and the magnetism of the spiral magnetization strip is the same as that of the spiral magnetization strip on the surface of the guide rod.
3. The weight-bearing migrating migration encapsulation reverse action eliminating back frame according to claim 2, wherein the spiral magnetization strips on the inner wall of the guide tube are staggered with the spiral magnetization strips on the surface of the corresponding guide rod.
4. The weight-bearing migrating migration encapsulation reverse action eliminating back frame according to claim 1, wherein a fastening screw is arranged on the limiting ring, and the limiting ring can be adjusted in position on the guide rod and then fixed through the fastening screw.
5. The weight-bearing migrating migration flux-reversing elimination back frame of claim 1, wherein a distance between the main tube and an adjacent guide bar is gradually increased from bottom to top.
6. The weight-bearing migrating migration flux-reversing elimination back frame of claim 1, wherein a distance between an end of the loading plate and an adjacent elastic rope is 2-3 times a diameter of the elastic rope.
7. The weight-bearing migrating migration encapsulation reverse action eliminating back frame according to claim 1, wherein the main body tube, the guide rod, the guide tube, the fixing frame and the bottom support plate are all made of ultra-light materials.
8. The weight-bearing migrating migration parcel reverse action elimination back frame according to claim 1, characterized in that the spiral magnetization strips on the guide tube and the guide rod are matched to offset the force on two sides of the parcel, so that the movement of the parcel can be limited from two sides of the parcel, the force on the parcel can be offset, and the bounce of the parcel can be reduced.
9. The weight-bearing migrating migration backward elimination back frame of claim 1, wherein the loading plate and the elastic rope cooperate to cushion the bag from stress.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811650887.3A CN109674190B (en) | 2018-12-31 | 2018-12-31 | Weight-bearing migration parcel reverse action eliminating back frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811650887.3A CN109674190B (en) | 2018-12-31 | 2018-12-31 | Weight-bearing migration parcel reverse action eliminating back frame |
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| Publication Number | Publication Date |
|---|---|
| CN109674190A CN109674190A (en) | 2019-04-26 |
| CN109674190B true CN109674190B (en) | 2021-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811650887.3A Active CN109674190B (en) | 2018-12-31 | 2018-12-31 | Weight-bearing migration parcel reverse action eliminating back frame |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4179053A (en) * | 1978-01-26 | 1979-12-18 | Figura Gene B | Awning for back pack |
| CN2527809Y (en) * | 2002-02-04 | 2002-12-25 | 邓平孝 | Coaxial-operated electromagnetic valve with hand resetting function |
| CN201687320U (en) * | 2010-05-06 | 2010-12-29 | 徐伟 | Magnetic-suspension sliding door |
| CN106820546A (en) * | 2017-03-03 | 2017-06-13 | 中航光电科技股份有限公司 | One kind back of the body holding tool |
| CN207355703U (en) * | 2017-09-18 | 2018-05-15 | 华南理工大学 | A kind of guide tracked knapsack load burden-alleviating device |
| CN108887863A (en) * | 2018-08-29 | 2018-11-27 | 华南理工大学 | A kind of knapsack dynamic load burden-alleviating device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2907352Y (en) * | 2006-04-12 | 2007-06-06 | 刘柳芬 | Force-aid buffering type knapsack |
-
2018
- 2018-12-31 CN CN201811650887.3A patent/CN109674190B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4179053A (en) * | 1978-01-26 | 1979-12-18 | Figura Gene B | Awning for back pack |
| CN2527809Y (en) * | 2002-02-04 | 2002-12-25 | 邓平孝 | Coaxial-operated electromagnetic valve with hand resetting function |
| CN201687320U (en) * | 2010-05-06 | 2010-12-29 | 徐伟 | Magnetic-suspension sliding door |
| CN106820546A (en) * | 2017-03-03 | 2017-06-13 | 中航光电科技股份有限公司 | One kind back of the body holding tool |
| CN207355703U (en) * | 2017-09-18 | 2018-05-15 | 华南理工大学 | A kind of guide tracked knapsack load burden-alleviating device |
| CN108887863A (en) * | 2018-08-29 | 2018-11-27 | 华南理工大学 | A kind of knapsack dynamic load burden-alleviating device |
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| Publication number | Publication date |
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| CN109674190A (en) | 2019-04-26 |
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Effective date of registration: 20210715 Address after: No.206-1, south 2nd floor, building 2, Xuzhou Software Park, no.6, wuruyuan Road, Quanshan District, Xuzhou City, Jiangsu Province Applicant after: Xuzhou Chuangshe General Technology Industry Research Institute Co.,Ltd. Address before: 221000 F-101, Tongxin block, Science Park, China University of mining and technology, Jiefang South Road, Quanshan District, Xuzhou City, Jiangsu Province Applicant before: Zhang Xiaoqin |
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