CN215136720U - Work platform device with lifting and storage functions - Google Patents
Work platform device with lifting and storage functions Download PDFInfo
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- CN215136720U CN215136720U CN202120864620.5U CN202120864620U CN215136720U CN 215136720 U CN215136720 U CN 215136720U CN 202120864620 U CN202120864620 U CN 202120864620U CN 215136720 U CN215136720 U CN 215136720U
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Abstract
The utility model relates to an operation platform device with go up and down and accomodate function, telescopic system's interior telescopic link sets up in outer telescopic link, and outer telescopic link sets up in the telescopic link mount, and draw gear's rocking handle is fixed to be set up on the center pin of rocking handle gear, and rocking handle gear and driven gear's center pin all set up on the telescopic link mount and two gear external toothing, the center pin fixed connection of one end and driven gear of haulage rope, the other end passes through the bottom of outer telescopic link and haulage rope fixed orifices fixed connection of interior telescopic link bottom through the assembly pulley; the platform fixed part of the bottom of the connecting platform is fixedly connected with the top pipe of the inner telescopic rod, and the foldable support frame is arranged at the bottom end of the telescopic rod fixing frame. The lifting and the falling of the connecting platform can be realized by shaking the rocking handle and by means of the traction rope and the pulley block. The bracing piece of collapsible support frame can be fixed at horizontal direction and vertical direction, expandes the state promptly and accomodates the state, makes things convenient for the during operation to support and carry and transport.
Description
Technical Field
The utility model relates to an operation platform device technical field. And more particularly, to a work platform apparatus having lifting and storage functions.
Background
The existing tennis ball serving device in the market is generally small in size and short in head, and is convenient for a user to carry to a tennis court for use. Due to the design, the tennis serving direction is from a lower horizontal plane to the same horizontal plane height, and the effect of hitting the tennis from a high position to a low position in a real tennis serving process cannot be simulated. If the effect of the opposite player hitting the ball from the high position downwards in the real match is simulated, the height of the tennis ball serving device needs to be lifted by using the lifting platform. But the existing lifting platform can not meet the requirements of portability and convenient lifting height.
Therefore, a work platform device with lifting and storage functions is needed, a support is foldable and stored, the work platform device is convenient to carry and transport, and the platform height can be adjusted by shaking a rocking handle to adapt to different players and different fields.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an operation platform device with go up and down and accomodate function then, the adjustment connection platform's that telescopic system can be convenient height, collapsible support frame can expand and pack up according to in service behavior, accomodates during support and the transportation when facilitating the use.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a work platform device with lifting and containing functions comprises a connecting platform, a telescopic system and a foldable support frame; the telescopic system comprises an inner telescopic rod, an outer telescopic rod, a telescopic rod fixing frame, a rocking handle and a traction device, wherein a traction rope fixing hole is formed in the bottom end of the inner telescopic rod, the inner telescopic rod is arranged in the outer telescopic rod, the outer telescopic rod is arranged in the telescopic rod fixing frame, the traction device comprises a rocking handle gear, a driven gear, a traction rope and a pulley block, the rocking handle is fixedly arranged on a central shaft of the rocking handle gear, the central shafts of the rocking handle gear and the driven gear are both arranged on the telescopic rod fixing frame and are externally meshed with the rocking handle gear and the driven gear, one end of the traction rope is fixedly connected with the central shaft of the driven gear, and the other end of the traction rope is fixedly connected with the traction rope fixing hole in the bottom end of the inner telescopic rod through the pulley block; the bottom of the connecting platform is provided with a platform fixing part, the platform fixing part is fixedly connected with a top pipe of the inner telescopic rod, and the foldable support frame is arranged at the bottom end of the telescopic rod fixing frame. The inner telescopic rod can slide up and down in the outer telescopic rod, the outer telescopic rod can slide up and down in the telescopic rod fixing frame, and the lifting and falling effects of the inner telescopic rod and the outer telescopic rod can be realized by rotating the rocking handle to retract and release the traction rope.
Preferably, the assembly pulley includes first fixed pulley, second fixed pulley, third fixed pulley, fourth fixed pulley and fifth fixed pulley, first fixed pulley sets up the top at the telescopic link mount, second fixed pulley and third fixed pulley set up the both sides in the bottom of outer telescopic link respectively, fourth fixed pulley and fifth fixed pulley set up the top at outer telescopic link, the haulage rope is from the center pin of driven gear around first fixed pulley, second fixed pulley, third fixed pulley, fourth fixed pulley and fifth fixed pulley and haulage rope fixed orifices fixed connection of knoing in proper order. One end of the traction rope is fixedly connected with a central shaft of the driven gear, then the traction rope upwards winds around the first fixed pulley, downwards winds to the second fixed pulley and the third fixed pulley through the inner side of the telescopic rod fixing frame and the bottom end of the outer telescopic rod, upwards winds to the fourth fixed pulley and the fifth fixed pulley through the outer side of the outer telescopic rod, and is fixedly connected with a traction rope fixing hole at the bottom end of the inner telescopic rod downwards through the inner side of the outer telescopic rod.
When the device is used, when the connecting platform needs to be lifted when the device works, the rocking handle is rocked clockwise, the rocking handle gear is driven by the rocking handle to rotate clockwise, the driven gear rotates anticlockwise, the traction rope is gradually wound on the central shaft of the driven gear, and the first fixed pulley, the second fixed pulley, the third fixed pulley, the fourth fixed pulley and the fifth fixed pulley play a role in guiding the traction rope; along with the effective length of haulage rope shortens gradually, interior telescopic link and outer telescopic link are promoted upwards to realize the function that connection platform rises.
When the device works and needs to lower the connecting platform, the rocking handle is rocked anticlockwise, the rocking handle gear is driven by the rocking handle to rotate anticlockwise, the driven gear rotates clockwise, the traction rope is gradually released from the central shaft of the driven gear, and the first fixed pulley, the second fixed pulley, the third fixed pulley, the fourth fixed pulley and the fifth fixed pulley play a role in guiding the traction rope; along with the effective length gradual increase of haulage rope, interior telescopic link falls to the telescopic link mount gradually with outer telescopic link under its self action of gravity in to realize the function that connecting platform descends.
Preferably, the fourth fixed pulley is arranged below the fifth fixed pulley, and the traction rope is wound on the fourth fixed pulley and the fifth fixed pulley in opposite directions. The effect of fourth fixed pulley makes the haulage rope keep the vertically state from third fixed pulley to fourth fixed pulley, because this section haulage rope is in the inboard of telescopic link mount, if do not have the haulage rope of fourth fixed pulley can produce the inclination, can produce the friction when haulage rope and telescopic link mount relative motion, can all produce the damage to haulage rope and telescopic link mount promptly.
Preferably, the foldable support frame comprises a support rod and a foldable base, the foldable base is fixedly arranged on the outer side wall of the bottom of the telescopic rod fixing frame, one end of the support rod is connected with the side wall of the foldable base through a pin shaft, and the support rod can rotate between the horizontal direction and the vertical direction around the pin shaft. When the bracing piece is for the expansion state at the horizontal direction, can support telescopic system and connection platform, when the bracing piece for accomodating the state in vertical direction, the bracing piece is hugged closely in the outside of telescopic link mount, conveniently carries and transports.
Preferably, two side walls of the folding base are correspondingly provided with a first limiting hole and a second limiting hole, the height between the first limiting hole and the bottom of the folding base is the same as the horizontal height of the supporting rod, and the width between the second limiting hole and the outer side wall of the telescopic rod fixing frame is the same as the vertical width of the supporting rod.
When the device works, the foldable support frame is in an unfolded state, the support rod is rotated to a horizontal state along the pin shaft, the limit screw is pushed into the first limit hole, and the upper surface of the support rod is pressed by the limit screw so as to fix the support rod and form an unfolded structure.
The device is in the state of accomodating when out of work, withdraws from the spacing screw in first spacing hole earlier, rotates the bracing piece to vertical state along the round pin axle, with spacing screw propulsion second spacing downthehole, the lower surface of bracing piece is pushed down to spacing screw to fixed support rod forms beta structure.
Preferably, the lower surface of the horizontal end part of the support rod is provided with a universal wheel. When the foldable support frame is in the working state of the unfolding structure, the device can be conveniently moved to a required position by using the universal wheels.
Preferably, the foldable support frame is arranged around the bottom end of the telescopic rod fixing frame. Generally speaking, the quantity of bracing piece and folding base is four respectively, and what each other become the right angle sets up around telescopic link mount bottom to guarantee to play good and firm supporting role to whole device.
Preferably, the connecting platform is provided with a platform connecting hole and a threaded hole, the platform connecting hole is fixedly connected with the support at the bottom of the fixing device to be fixed, and the threaded hole is fixedly connected with the bottom plate of the fixing device to be fixed through a non-disengagement screw. The firmness that connecting platform and waiting for fixing device to be connected can be guaranteed to platform connecting hole and screw hole, guarantees to wait that fixing device can reciprocate along with connecting platform and accomplish the operation task.
The utility model has the advantages as follows:
the utility model discloses owing to adopted above technical scheme, can realize telescopic system's promotion and whereabouts with the help of haulage rope and assembly pulley through shaking the rocking handle to realize connection platform's rising and decline, accomplish corresponding operation task. The bracing piece of collapsible support frame can be fixed in horizontal direction and vertical direction to realize the expansion state and the state of accomodating of collapsible support frame, make things convenient for the during operation to support and carry and transport.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Fig. 1 shows a schematic perspective view of a work platform device with lifting and storage functions according to the present invention.
Fig. 2 shows a schematic structural view of a telescopic system and a traction device of a work platform device with lifting and storage functions of the present invention.
Fig. 3 shows a schematic structural view of a foldable support frame of a work platform device with lifting and storage functions according to the present invention.
Fig. 4 shows a schematic structural diagram of the connection between the connecting platform of the work platform device with lifting and storage functions and the tennis ball dispenser of the present invention.
The meaning of the individual reference symbols in the drawings:
1-connecting platform, 11-platform connecting hole, 12-threaded hole, 13-platform fixing part, 2-inner telescopic rod, 3-outer telescopic rod, 4-telescopic rod fixing frame, 5-rocking handle, 6-traction device, 61-rocking handle gear, 62-driven gear, 63-first fixed pulley, 64-second fixed pulley, 65-third fixed pulley, 66-fourth fixed pulley, 67-fifth fixed pulley, 68-traction rope fixing hole, 69-traction rope, 7-foldable supporting frame, 71-supporting rod, 72-folding base, 721-pin shaft, 722-first limiting hole, 723-second limiting hole and 73-universal wheel.
Detailed Description
In order to explain the present invention more clearly, the present invention will be further described with reference to the preferred embodiments and the accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
As shown in fig. 1 and 4, a work platform device with lifting and storage functions comprises a connecting platform 1, a telescopic system and a foldable support frame 7.
The telescopic system comprises an inner telescopic rod 2, an outer telescopic rod 3, a telescopic rod fixing frame 4, a rocking handle 5 and a traction device 6, the bottom end of the inner telescopic rod 2 is provided with a hauling rope fixing hole 68, the inner telescopic rod 2 is arranged in the outer telescopic rod 3, the outer telescopic rod 3 is arranged in the telescopic rod fixing frame 4, the traction device 6 comprises a rocking handle gear 61, a driven gear 62, a traction rope 69 and a pulley block, the rocking handle 5 is fixedly arranged on the central shaft of the rocking handle gear 61, the central shafts of the rocking handle gear 61 and the driven gear 62 are both arranged on the telescopic rod fixing frame 4, the rocking handle gear 61 is externally meshed with the driven gear 62, one end of the traction rope 69 is fixedly connected with the central shaft of the driven gear 62, and the other end of the traction rope 69 passes through the bottom end of the outer telescopic rod 3 through a pulley block and is fixedly connected with a traction rope fixing hole 68 at the bottom end of the inner telescopic rod 2.
The assembly pulley includes first fixed pulley 63, second fixed pulley 64, third fixed pulley 65, fourth fixed pulley 66 and fifth fixed pulley 67, first fixed pulley 63 sets up the top at telescopic link mount 4, second fixed pulley 64 and third fixed pulley 65 set up the both sides in the bottom of outer telescopic link 3 respectively, fourth fixed pulley 66 and fifth fixed pulley 67 set up the top of telescopic link 3 outside, haulage rope 69 is from the center pin of moving gear 62 around first fixed pulley 63, second fixed pulley 64, third fixed pulley 65, fourth fixed pulley 66 and fifth fixed pulley 67 and haulage rope fixed orifices 68 fixed connection in proper order. One end of the traction rope 69 is fixedly connected with the central shaft of the driven gear 62, then the traction rope 69 upwards winds the first fixed pulley 63, downwards winds the inner side of the telescopic rod fixing frame 4 and the bottom end of the outer telescopic rod 3 to the second fixed pulley 64 and the third fixed pulley 65, upwards winds the outer side of the outer telescopic rod 3 to the fourth fixed pulley 66 and the fifth fixed pulley 67, and downwards winds the inner side of the outer telescopic rod 3 to be fixedly connected with the traction rope fixing hole 68 at the bottom end of the inner telescopic rod 2.
When the device is used, when the connecting platform 1 is required to be lifted when the device works, the rocking handle 5 is rocked clockwise, the rocking handle gear 61 is driven by the rocking handle 5 to rotate clockwise, the driven gear 62 rotates anticlockwise, the traction rope 69 is gradually wound on the central shaft of the driven gear 62, and the first fixed pulley 63, the second fixed pulley 64, the third fixed pulley 65, the fourth fixed pulley 66 and the fifth fixed pulley 67 guide the traction rope 69; as the effective length of the traction rope 69 is gradually shortened, the inner and outer telescopic rods 2 and 3 are lifted upward to perform a function of lifting the connection platform 1.
When the device works and needs to lower the connecting platform 1, the rocking handle 5 is rocked anticlockwise, the rocking handle gear 61 is driven by the rocking handle 5 to rotate anticlockwise, the driven gear 62 rotates clockwise, the traction rope 69 is gradually released from the central shaft of the driven gear 62, and the first fixed pulley 63, the second fixed pulley 64, the third fixed pulley 65, the fourth fixed pulley 66 and the fifth fixed pulley 67 guide the traction rope 69; along with the effective length of the traction rope 69 gradually increases, the inner telescopic rod 2 and the outer telescopic rod 3 gradually fall into the telescopic rod fixing frame 4 under the action of the self gravity to realize the function of descending the connecting platform 1.
The fourth fixed pulley 66 is disposed below the fifth fixed pulley 67, and the traction rope 69 is wound around the fourth fixed pulley 66 and the fifth fixed pulley 67 in opposite directions. The fourth fixed pulley 66 is used for keeping the traction rope 69 in a vertical state from the third fixed pulley 65 to the fourth fixed pulley 66, because the traction rope 69 at the section is arranged on the inner side of the telescopic rod fixing frame 4, if the fourth fixed pulley 66 is not arranged, the traction rope 69 is inclined, friction is generated when the traction rope 69 moves relative to the telescopic rod fixing frame 4, and damage is generated to the traction rope 69 and the telescopic rod fixing frame 4.
The foldable support frame 7 comprises a support rod 71 and a foldable base 72, the foldable base 72 is fixedly arranged on the outer side wall of the bottom of the telescopic rod fixing frame 4, one end of the support rod 71 is connected with the side wall of the foldable base 72 through a pin 721, and the support rod 71 can rotate between the horizontal direction and the vertical direction around the pin 721. When the bracing piece 71 is for the expansion state at the horizontal direction, can support telescopic system and connection platform 1, when bracing piece 71 for accomodating the state in vertical direction, bracing piece 71 hugs closely in the outside of telescopic link mount 4, conveniently carries and transports.
A first limiting hole 722 and a second limiting hole 723 are correspondingly arranged on two side walls of the folding base 72, the height between the first limiting hole 722 and the bottom of the folding base 72 is the same as the horizontal height of the supporting rod 71, and the width between the second limiting hole 723 and the outer side wall of the telescopic rod fixing frame 4 is the same as the vertical width of the supporting rod 71.
The lower surface of the horizontal end part of the support rod 71 is provided with a universal wheel 73. When the collapsible support 7 is in the operative condition in the unfolded configuration, the universal wheels 73 may be used to facilitate moving the device to the desired position.
The foldable support frame 7 is arranged around the bottom end of the telescopic rod fixing frame 4. Generally speaking, the number of the support rods 71 and the number of the folding bases 72 are four, and the support rods and the folding bases are arranged around the bottom end of the telescopic rod fixing frame 4 at right angles to ensure that the whole device is well and stably supported.
When the device works, the foldable support frame 7 is in an unfolded state, the support rod 71 is rotated to a horizontal state along the pin 721, the limit screw is pushed into the first limit hole 722, and the limit screw presses the upper surface of the support rod 71 to fix the support rod 71, so that an unfolded structure is formed.
When the device does not work, the device is in a storage state, firstly the limiting screw is withdrawn from the first limiting hole 722, the supporting rod 71 is rotated to a vertical state along the pin 721, the limiting screw is pushed into the second limiting hole 723, and the limiting screw presses the lower surface of the supporting rod 71 to fix the supporting rod 71, so that a folding structure is formed.
The bottom of connecting platform 1 is equipped with platform fixed part 13, platform fixed part 13 and the top pipe fixed connection of interior telescopic link 2, collapsible support frame 7 sets up the bottom at telescopic link mount 4. The inner telescopic rod 2 can slide up and down in the outer telescopic rod 3, the outer telescopic rod 3 can slide up and down in the telescopic rod fixing frame 4, and the traction rope 69 can be retracted and extended by rotating the rocking handle 5 to realize the lifting and falling effects of the inner telescopic rod 2 and the outer telescopic rod 3.
The connecting platform 1 is provided with a platform connecting hole 11 and a threaded hole 12, the platform connecting hole 11 is fixedly connected with a support at the bottom of the fixing device to be treated, and the threaded hole 12 is fixedly connected with a bottom plate of the fixing device to be treated through a non-disengagement screw. The firmness of connecting the connecting platform 1 and the to-be-fixed device can be guaranteed by the platform connecting hole 11 and the threaded hole 12, and the to-be-fixed device can move up and down along with the connecting platform 1 to complete an operation task.
As shown in fig. 4, taking a tennis ball serving device as an example, the upper surface of the connecting platform 1 is fixedly connected with the bottom of the tennis ball serving device, the bottom of the tennis ball serving device is provided with a support corresponding to the platform connecting hole 11, the support is fixedly connected with the platform connecting hole 11, and the bottom plate of the tennis ball serving device is fixedly connected with the threaded hole 12 by using a non-releasing screw, so that the connection stability is ensured. The tennis ball serving device moves up and down along with the connecting platform 1 or moves along with the whole device in the horizontal direction, so that the tennis ball serving effect can be better realized.
Obviously, the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it is obvious for those skilled in the art to make other variations or changes based on the above descriptions, and all the embodiments cannot be exhausted here, and all the obvious variations or changes that belong to the technical solutions of the present invention are still in the protection scope of the present invention.
Claims (8)
1. A work platform device with lifting and containing functions is characterized by comprising a connecting platform (1), a telescopic system and a foldable support frame (7);
the telescopic system comprises an inner telescopic rod (2), an outer telescopic rod (3), a telescopic rod fixing frame (4), a rocking handle (5) and a traction device (6), wherein a traction rope fixing hole (68) is formed in the bottom end of the inner telescopic rod (2), the inner telescopic rod (2) is arranged in the outer telescopic rod (3), the outer telescopic rod (3) is arranged in the telescopic rod fixing frame (4), the traction device (6) comprises a rocking handle gear (61), a driven gear (62), a traction rope (69) and a pulley block, the rocking handle (5) is fixedly arranged on a central shaft of the rocking handle gear (61), the central shafts of the rocking handle gear (61) and the driven gear (62) are arranged on the telescopic rod fixing frame (4) and are meshed with the rocking handle gear (61) and the driven gear (62), one end of the traction rope (69) is fixedly connected with the central shaft of the driven gear (62), the other end of the traction rope (69) passes through the bottom end of the outer telescopic rod (3) through a pulley block and is fixedly connected with a traction rope fixing hole (68) at the bottom end of the inner telescopic rod (2);
the bottom of connecting platform (1) is equipped with platform fixed part (13), platform fixed part (13) and the top pipe fixed connection of interior telescopic link (2), collapsible support frame (7) set up the bottom at telescopic link mount (4).
2. A work platform apparatus with lifting and stowing functions according to claim 1, it is characterized in that the pulley block comprises a first fixed pulley (63), a second fixed pulley (64), a third fixed pulley (65), a fourth fixed pulley (66) and a fifth fixed pulley (67), the first fixed pulley (63) is arranged at the top end of the telescopic rod fixing frame (4), the second fixed pulley (64) and the third fixed pulley (65) are respectively arranged at two sides of the bottom end of the outer telescopic rod (3), the fourth fixed pulley (66) and the fifth fixed pulley (67) are arranged at the top end of the outer telescopic rod (3), the traction rope (69) sequentially rounds a first fixed pulley (63), a second fixed pulley (64), a third fixed pulley (65), a fourth fixed pulley (66) and a fifth fixed pulley (67) from a central shaft of the driven gear (62) and is fixedly connected with the traction rope fixing hole (68).
3. A work platform arrangement with lifting and lowering and stowing functions according to claim 2, characterised in that the fourth fixed sheave (66) is arranged below the fifth fixed sheave (67), the traction rope (69) being wound in opposite directions on the fourth fixed sheave (66) and the fifth fixed sheave (67).
4. The work platform device with lifting and storage functions as claimed in claim 1, wherein the foldable support frame (7) comprises a support rod (71) and a foldable base (72), the foldable base (72) is fixedly arranged on the outer side wall of the bottom of the telescopic rod fixing frame (4), one end of the support rod (71) is connected with the side wall of the foldable base (72) through a pin shaft (721), and the support rod (71) can rotate around the pin shaft (721) between the horizontal direction and the vertical direction.
5. The work platform device with the lifting and containing functions as claimed in claim 4, wherein a first limiting hole (722) and a second limiting hole (723) are correspondingly formed in two side walls of the folding base (72), the height between the first limiting hole (722) and the bottom of the folding base (72) is the same as the height of the horizontal position of the supporting rod (71), and the width between the second limiting hole (723) and the outer side wall of the telescopic rod fixing frame (4) is the same as the width of the vertical position of the supporting rod (71).
6. A work platform device with lifting and storage functions, as claimed in claim 5, characterized in that the lower surface of the horizontal end of the support bar (71) is provided with universal wheels (73).
7. The work platform device with lifting and storage functions as claimed in claim 6, wherein the foldable support frame (7) is arranged around the bottom end of the telescopic rod fixing frame (4).
8. The work platform device with the lifting and containing functions as claimed in claim 1, wherein the connecting platform (1) is provided with a platform connecting hole (11) and a threaded hole (12), the platform connecting hole (11) is fixedly connected with a support at the bottom of the device to be fixed, and the threaded hole (12) is fixedly connected with a bottom plate of the device to be fixed through a non-removing screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120864620.5U CN215136720U (en) | 2021-04-26 | 2021-04-26 | Work platform device with lifting and storage functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120864620.5U CN215136720U (en) | 2021-04-26 | 2021-04-26 | Work platform device with lifting and storage functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215136720U true CN215136720U (en) | 2021-12-14 |
Family
ID=79363368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120864620.5U Active CN215136720U (en) | 2021-04-26 | 2021-04-26 | Work platform device with lifting and storage functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215136720U (en) |
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2021
- 2021-04-26 CN CN202120864620.5U patent/CN215136720U/en active Active
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| TR01 | Transfer of patent right |
Effective date of registration: 20230828 Address after: Room 302, Gate 3, Building 3, Shangdi 3rd Street, Haidian District, Beijing 100085 Patentee after: Beijing Tietan Technology Co.,Ltd. Address before: No. 503, gate 3, new 4th floor, No. 28, Xinjiekou Wai Street, Xicheng District, Beijing 100088 Patentee before: Yuan Longhui |
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| TR01 | Transfer of patent right |