CN217711553U - Drawer type accessible roof access hole cover plate device - Google Patents
Drawer type accessible roof access hole cover plate device Download PDFInfo
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- CN217711553U CN217711553U CN202220450142.8U CN202220450142U CN217711553U CN 217711553 U CN217711553 U CN 217711553U CN 202220450142 U CN202220450142 U CN 202220450142U CN 217711553 U CN217711553 U CN 217711553U
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- frame
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- 238000009423 ventilation Methods 0.000 claims description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 238000000926 separation method Methods 0.000 claims description 8
- 238000002955 isolation Methods 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 6
- 239000012535 impurity Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The utility model provides a drawer type accessible roof access hole cover plate device. The drawer type accessible roof access hole cover plate device comprises an access hole; the guide rail structure is fixed at the top end of the access hole and comprises a fixing frame, a sliding rail and a side plate, the fixing frame is fixed at the top end of the access hole, and the side plate is fixed at one end of the fixing frame; the cover plate structure is arranged at one end of the surface of the fixed frame; the cover opening structure is arranged on the bottom surface of one end of the outer frame; the guide structure is fixed inside the outer frame; the sunshade structure, the sunshade structure install in the inside of outrigger structure, the draw-in groove is located the inside wall of manhole. The utility model provides a drawer type does not go up people's roofing access hole apron device has the emission of the rainwater of being convenient for, and can be to the indoor advantage of ventilating.
Description
Technical Field
The utility model relates to an access hole apron technical field especially relates to a drawer type does not go up people's roofing access hole apron device.
Background
Roof access hole manhole apron has multiple types such as ordinary concrete apron, cast iron apron, compound plank apron, galvanized iron sheet apron, and these manhole apron exist and be difficult to remove, easily produce rust and damage, the lower scheduling problem of durability, if can open manhole apron fast through promoting gently, then can bring the facility for professional maintenance personal, reduce the potential safety hazard and take place.
Some roofing access hole apron that have now are when using, because the apron is installed on the top of access hole, receive the erosion of wind and rain for a long time, and the rainwater discharges and can not fall, can lead to the apron to rust to weld extremely difficult the opening for a long time, and general apron all is sealed dead, can not ventilate for indoor ventilative.
Therefore, there is a need to provide a new drawer-type manhole cover device to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a be convenient for the emission of rainwater, and can be to indoor drawer type accessible roof access hole cover plate device that ventilates.
The utility model provides a drawer type does not go up people's roofing access hole apron device includes: an access hole; the guide rail structure is fixed at the top end of the access hole and comprises a fixed frame, a sliding rail and a side plate, the fixed frame is fixed at the top end of the access hole, the sliding rail is arranged on the surface of the fixed frame, and the side plate is fixed at one end of the fixed frame; the cover plate structure is arranged at one end of the surface of the fixing frame and comprises an outer frame, a ventilation groove, a separation net, a water outlet, a water guide groove, air vents, pulleys and a clamping block, the outer frame is arranged at one end of the surface of the fixing frame, the pulleys are fixed at two ends of the bottom surface of the outer frame, the ventilation groove is formed in the surface of the cover plate, the separation net is fixed in the outer frame, the water outlet is formed in the side walls at two ends of the outer frame, the water guide groove is fixed in the outer frame, the air vents are formed in the outer frame, and the clamping block is fixed on the side wall at one end of the outer frame; the cover opening structure is mounted on the bottom surface of one end of the outer frame and comprises a first handle, a rotating shaft, a lead, a first guide wheel, a buckle, a fixed block, a spring and a second guide wheel, wherein the first handle is mounted at one end of the bottom surface of the outer frame, the rotating shaft is fixed at one end of the first handle, one end of the lead is fixed on the side wall of the rotating shaft, the first guide wheel is fixed inside one end of the outer frame, the fixed block is fixed inside the clamping block, the spring is fixed on the side wall of the fixed block, the buckle is fixed at one end of the spring, and the second guide wheel is fixed inside the fixed block; the guide structure is fixed inside the outer frame and comprises a guide plate and balls, the guide plate is fixed inside the outer frame, and the balls are embedded in the surface of the guide plate; the shielding plate structure is arranged inside the outer frame structure and comprises a second handle, a sliding plate and a baffle plate, the sliding plate is arranged inside the outer frame, the baffle plate is fixed at one end of the sliding plate, and the second handle is fixed at the bottom surface of the other end of the sliding plate; the clamping groove is formed in the inner side wall of the access hole.
Preferably, the pulley slides inside the slide rail, and the outer frame slides on the surface of the fixing frame through the pulley, and the length of the fixing frame is twice of the length of the outer frame.
Preferably, the separation net is fixed inside the ventilation groove, the water guide groove is positioned under the ventilation groove, the vent hole is arranged between the water guide grooves, and the vent hole is communicated with the ventilation groove through the water guide groove.
Preferably, the guide plate is in rolling connection with the balls, the sliding plate slides on the side walls of the balls, and the side walls of the sliding plate abut against the inner side walls of the outer frame.
Preferably, the first handle is rotatably connected with the outer frame through the rotating shaft, and the wire slides in the inner part of the outer frame and the side walls of the first guide wheel and the second guide wheel.
Preferably, the other end of the wire is fixed at the bottom end of the buckle, and the buckle slides on the side wall of the fixture block.
Compared with the prior art, the utility model provides a drawer type does not go up people's roofing access hole apron device has following beneficial effect:
the utility model provides a drawer type does not go up people's roofing access hole apron device, through the length of guide rail structure is the twice of apron structural length, just the apron structure can the structural slip of guide rail makes the apron structure can be in easily the structural removal of guide rail, just the apron structure can with the inside air of access hole replaces, makes the inside circulation of air of access hole, just the surface of apron structure can be discharged the rainwater, makes the rainwater can't gather, through the draw-in groove can make the apron structure fix directly over the access hole, makes the apron structure will the access hole covers, through sliding the sunshade structure makes the sunshade structure is in the inside of apron structure slides, can make the inside of apron structure seals or opens, will when needs will the apron structure is opened, installs through the pulling the structure of uncapping, makes the structure of uncapping be in the inside of uncapping structure rotates, makes the structure of uncapping break away from with the block of draw-in groove makes the apron structure slides to the other end of guide rail structure, makes the access hole is opened, and this device has the rainwater of being convenient for discharging, and the indoor advantage that ventilates.
Drawings
Fig. 1 is a schematic structural view of a preferred embodiment of a drawer-type accessible roof manhole cover device according to the present invention;
FIG. 2 is a schematic structural view of the front section shown in FIG. 1;
FIG. 3 is a schematic side view of the cross-section shown in FIG. 1;
FIG. 4 is an enlarged schematic view of the portion A shown in FIG. 2;
fig. 5 is an enlarged schematic view of the portion B shown in fig. 4.
The reference numbers in the figures: 1. the structure comprises an access hole, 2, a guide rail structure, 21, a fixing frame, 22, a sliding rail, 23, a side plate, 3, a cover plate structure, 31, an outer frame, 32, a ventilation groove, 33, an isolation net, 34, a water outlet, 35, a water guide groove, 36, a ventilation opening, 37, a pulley, 38, a clamping block, 4, an opening structure, 41, a first handle, 42, a rotating shaft, 43, a wire, 44, a first guide wheel, 45, a clamping buckle, 46, a fixing block, 47, a spring, 48, a second guide wheel, 5, a shielding plate structure, 51, a second handle, 52, a sliding plate, 53, a baffle, 6, a guide structure, 61, a guide plate, 62, a ball, 7 and a clamping groove.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and embodiments.
Please refer to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5 in combination, wherein fig. 1 is a schematic structural view of a preferred embodiment of a drawer type accessible roof cover plate device according to the present invention; FIG. 2 is a schematic structural view of the front section shown in FIG. 1; FIG. 3 is a schematic side view of the cross-section shown in FIG. 1; FIG. 4 is an enlarged schematic view of the portion A shown in FIG. 1; fig. 5 is an enlarged schematic view of a portion B shown in fig. 4. Drawer type does not go up people's roofing access hole apron device includes: an access hole 1; the guide rail structure 2 is fixed at the top end of the access hole 1, the guide rail structure 2 comprises a fixed frame 21, a slide rail 22 and a side plate 23, the fixed frame 21 is fixed at the top end of the access hole 1, the slide rail 22 is arranged on the surface of the fixed frame 21, and the side plate 23 is fixed at one end of the fixed frame 21; the cover plate structure 3 is mounted at one end of the surface of the fixed frame 21, the cover plate structure 3 comprises an outer frame 31, a ventilation groove 32, an isolation net 33, a water outlet 34, a water guide groove 35, air vents 36, pulleys 37 and fixture blocks 38, the outer frame 31 is mounted at one end of the surface of the fixed frame 21, the pulleys 37 are fixed at two ends of the bottom surface of the outer frame 31, the ventilation groove 32 is arranged on the surface of the cover plate, the isolation net 33 is fixed in the outer frame 31, the water outlet 34 is arranged on the side walls at two ends of the outer frame 31, the water guide groove 35 is fixed in the outer frame 31, the air vents 36 are arranged in the outer frame 31, and the fixture blocks 38 are fixed on the side wall at one end of the outer frame 31; the cover opening structure 4 is mounted on the bottom surface of one end of the outer frame 31, the cover opening structure 4 comprises a first handle 41, a rotating shaft 42, a conducting wire 43, a first guide wheel 44, a buckle 45, a fixing block 46, a spring 47 and a second guide wheel 48, the first handle 41 is mounted on one end of the bottom surface of the outer frame 31, the rotating shaft 42 is fixed on one end of the first handle 41, one end of the conducting wire 43 is fixed on the side wall of the rotating shaft 42, the first guide wheel 44 is fixed inside one end of the outer frame 31, the fixing block 46 is fixed inside the fixing block 38, the spring 47 is fixed on the side wall of the fixing block 46, the buckle 45 is fixed on one end of the spring 47, and the second guide wheel 48 is fixed inside the fixing block 46; a guide structure 6, wherein the guide structure 6 is fixed inside the outer frame 31, the guide structure 6 comprises a guide plate 61 and balls 62, the guide plate 61 is fixed inside the outer frame 31, and the balls 62 are embedded in the surface of the guide plate 61; the shutter structure 5, the shutter structure 5 is installed inside the structure of the outer frame 31, the shutter structure 5 comprises a second handle 51, a sliding plate 52 and a baffle plate 53, the sliding plate 52 is installed inside the structure of the outer frame 31, the baffle plate 53 is fixed at one end of the sliding plate 52, and the second handle 51 is fixed at the bottom surface of the other end of the sliding plate 52; and the clamping groove 7 is formed in the inner side wall of the access hole 1.
In a specific implementation process, as shown in fig. 3, the pulley 37 slides inside the slide rail 22, the external frame 31 slides on the surface of the fixed frame 21 through the pulley 37, and the length of the fixed frame 21 is twice the length of the external frame 31, so that the pulley 37 slides inside the slide rail 33, the external frame 31 moves on the surface of the fixed frame 21, and the manhole 1 is opened or closed.
In a specific implementation process, as shown in fig. 1, 2 and 3, the separation net 33 is fixed inside the ventilation groove 32, the water guiding groove 35 is located right below the ventilation groove 32, the air vent 36 is disposed between the water guiding grooves 35, and the air vent 36 is communicated with the ventilation groove through the water guiding groove 35, so that external impurities separated by the separation net 33 can enter the inside of the outer frame 31 through the ventilation groove 32, rainwater entering through the ventilation groove 32 is discharged through the water guiding groove 35, and air inside and outside the outer frame 31 can be replaced through the air vent 36.
In a specific implementation process, as shown in fig. 2 and 3, the guide plate 61 is in rolling connection with the balls 62, the sliding plate 52 slides on the side wall of the ball 62, and the side wall of the sliding plate 52 abuts against the inner side wall of the outer frame 31, so that the sliding plate 52 slides on the guide plate 61, and the sliding plate 52 seals the inside of the outer frame 21, so that the outer frame 21 is not ventilated any more.
In a specific implementation process, as shown in fig. 2, 4 and 5, the first handle 41 is rotatably connected to the outer frame 31 through the rotating shaft 42, and the wire 43 slides inside the outer frame 31 and on the side walls of the first guide wheel 44 and the second guide wheel 48, so that by pulling the first handle 41, the rotating shaft 42 rotates inside one end of the outer frame 31, the rotating shaft 42 winds the guide, and the wire 43 slides inside the outer frame 31 and on the side walls of the first guide wheel 44 and the second guide wheel 48.
In a specific implementation process, as shown in fig. 2, 4 and 5, the other end of the wire 43 is fixed at the bottom end of the buckle 45, the buckle 45 slides on the side wall of the latch 38, and the wound wire 43 is guided by the first guide wheel 44 and the second guide wheel 48 to pull the buckle 45 to slide towards the inside of the latch 38, so that the spring 47 is compressed.
The utility model provides a drawer type does not go up people's roofing access hole apron device's theory of operation as follows:
when in use, the fixing frame 21 is fixed at the top end of the manhole 1 through bolts, then the outer frame 31 slides into the slide rail 22 through the pulleys 37, so that the outer frame 31 is slidably mounted on the surface of the fixing frame 21, then the fixture block 38 fixed at one end of the outer frame 31 is clamped into the inside of the clamping groove 7 arranged on the side wall of the manhole 1, so that one end of the outer frame 31 is abutted against the side wall of the manhole 1, so that the outer frame 31 covers the manhole 1, when raining, the ventilation groove 32 is arranged on the surface of the outer frame 31, the water guide groove 35 is fixed under the ventilation groove 32, rainwater is discharged from the water outlet 34 at one end of the outer frame 31 through the water guide groove 35, so that rainwater cannot be accumulated on the surface of the outer frame 31, meanwhile, the separation net 33 is fixed inside the ventilation groove 32, the separation net 33 can separate external impurities, so that the external impurities cannot enter the inner part of the outer frame 31 through the ventilation groove 32, the air vents 36 are arranged between the water guide grooves 35, the air vents 36 are communicated with the ventilation groove 32 through the water guide grooves 35, so that the external air can be replaced with the air in the outer frame 31 through the air vents 36, the air circulation can be ensured indoors, when the replacement of the internal air and the external air is not required, the sliding plate 52 slides on the guide plate 61 fixed on the side wall in the outer frame 31 by pulling the second handle 51, the side wall of the sliding plate 52 is abutted against the inner side wall of the outer frame 31, and the baffle plate 53 fixed at one end of the sliding plate 52 is abutted against the side wall at one end of the outer frame 31, the slide plate 52 is used for sealing and isolating the inside of the outer frame 31, when the outer frame 31 needs to be opened, the first handle 41 is pulled to drive the rotating shaft 42 to rotate, the rotating shaft 42 rotates to roll the wire 43 with the side wall fixed, the wire 43 is rolled under the guide of the first guide wheel 44 and the second guide wheel 48 to move the buckle 45, so that the buckle 45 contracts towards the inside of the clamping block 38, meanwhile, the spring 47 is compressed to separate the block from the clamping of the clamping groove 7, the outer frame 31 slides towards one end of the fixing frame 21, the access hole 1 is opened, and the device has the advantages of convenience in rainwater drainage and capability of ventilating the indoor air.
Compared with the prior art, the utility model provides a drawer type does not go up people's roofing access hole apron device has following beneficial effect:
the utility model provides a drawer type does not go up people's roofing access hole apron device, through the length of guide rail structure 2 is the twice of 3 length of apron structure, just apron structure 3 can slide on the guide rail structure 2, makes apron structure 3 can be easily move on the guide rail structure 2, just apron structure 3 can with the inside air of access hole 1 replaces, makes the inside circulation of air of access hole 1, just the surface of apron structure 3 can be discharged the rainwater, makes the rainwater can't gather, through draw-in groove 7 can make apron structure 3 fixes directly over access hole 1, makes apron structure 3 will access hole 1 covers, through sliding sunshade structure 5 makes sunshade structure 5 is in the inside of apron structure 3 slides, can make the inside of apron structure 3 seals or opens, will when needs apron structure 3 opens, installs through the pulling apron structure 3 bottom surface one end uncover structure 4, makes uncover structure 4 is in the inside of uncovering structure 3 rotates, makes apron structure 4 break away from with the apron structure 7 the block that opens the rainwater that the access hole 3 opened makes the ventilation structure 3 block is opened the indoor ventilation and is convenient for the other end of uncovering the ventilation is opened the access hole 2, the advantage of the access hole that makes this is discharged.
The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a drawer type does not go to people's roofing access hole apron device which characterized in that includes:
a manhole (1);
the guide rail structure (2) is fixed to the top end of the access hole (1), the guide rail structure (2) comprises a fixing frame (21), a sliding rail (22) and a side plate (23), the fixing frame (21) is fixed to the top end of the access hole (1), the sliding rail (22) is arranged on the surface of the fixing frame (21), and the side plate (23) is fixed to one end of the fixing frame (21);
the cover plate structure (3) is mounted at one end of the surface of the fixing frame (21), the cover plate structure (3) comprises an outer frame (31), a ventilation groove (32), an isolation net (33), a water outlet (34), a water guide groove (35), an air vent (36), a pulley (37) and a fixture block (38), the outer frame (31) is mounted at one end of the surface of the fixing frame (21), the pulley (37) is fixed at two ends of the bottom surface of the outer frame (31), the ventilation groove (32) is arranged on the surface of the cover plate, the isolation net (33) is fixed inside the outer frame (31), the water outlet (34) is arranged on the side walls of two ends of the outer frame (31), the water guide groove (35) is fixed inside the outer frame (31), the air vent (36) is arranged inside the outer frame (31), and the fixture block (38) is fixed on the side wall of one end of the outer frame (31);
the cover opening structure (4) is mounted on the bottom surface of one end of the outer frame (31), the cover opening structure (4) comprises a first handle (41), a rotating shaft (42), a conducting wire (43), a first guide wheel (44), a buckle (45), a fixing block (46), a spring (47) and a second guide wheel (48), the first handle (41) is mounted on one end of the bottom surface of the outer frame (31), the rotating shaft (42) is fixed to one end of the first handle (41), one end of the conducting wire (43) is fixed to the side wall of the rotating shaft (42), the first guide wheel (44) is fixed to the inner portion of one end of the outer frame (31), the fixing block (46) is fixed to the inner portion of the fixing block (38), the spring (47) is fixed to the side wall of the fixing block (46), the buckle (45) is fixed to one end of the spring (47), and the second guide wheel (48) is fixed to the inner portion of the fixing block (46);
a guide structure (6), wherein the guide structure (6) is fixed inside the outer frame (31), the guide structure (6) comprises a guide plate (61) and balls (62), the guide plate (61) is fixed inside the outer frame (31), and the balls (62) are embedded in the surface of the guide plate (61);
the shielding plate structure (5), the shielding plate structure (5) is installed inside the structure of the outer frame (31), the shielding plate structure (5) comprises a second handle (51), a sliding plate (52) and a baffle plate (53), the sliding plate (52) is installed inside the outer frame (31), the baffle plate (53) is fixed at one end of the sliding plate (52), and the second handle (51) is fixed at the bottom surface of the other end of the sliding plate (52);
the clamping groove (7), the clamping groove (7) is arranged on the inner side wall of the access hole (1).
2. A drawer type manless roof access panel arrangement according to claim 1, characterized in that the pulleys (37) are slid inside the sliding rails (22) and the external frame (31) is slid on the surface of the fixed frame (21) by means of the pulleys (37), and the length of the fixed frame (21) is twice the length of the external frame (31).
3. The drawer type no-man roofing manhole cover plate device according to claim 1, wherein the separation net (33) is fixed inside the ventilation grooves (32), the water guide grooves (35) are located right below the ventilation grooves (32), the ventilation ports (36) are arranged between the water guide grooves (35), and the ventilation ports (36) are communicated with the ventilation grooves through the water guide grooves (35).
4. A drawer type manway cover device according to claim 1, characterized in that said guiding plate (61) is in rolling connection with said balls (62), and said sliding plate (52) slides on the side walls of said balls (62), and the side walls of said sliding plate (52) abut against the inner side walls of said outer frame (31).
5. A drawer type man-less roof access panel arrangement according to claim 1, c h a r a c t e r i z e d in that the first handle (41) is pivotally connected to the outer frame (31) by means of the pivot shaft (42), and that the wire (43) slides inside the outer frame (31) and the side walls of the first guide wheel (44) and the second guide wheel (48).
6. The drawer-type no-man roofing manhole cover device according to claim 1, wherein the other end of the wire (43) is fixed to the bottom end of the catch (45), and the catch (45) slides on the side wall of the latch (38).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220450142.8U CN217711553U (en) | 2022-03-03 | 2022-03-03 | Drawer type accessible roof access hole cover plate device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220450142.8U CN217711553U (en) | 2022-03-03 | 2022-03-03 | Drawer type accessible roof access hole cover plate device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217711553U true CN217711553U (en) | 2022-11-01 |
Family
ID=83786955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220450142.8U Active CN217711553U (en) | 2022-03-03 | 2022-03-03 | Drawer type accessible roof access hole cover plate device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217711553U (en) |
-
2022
- 2022-03-03 CN CN202220450142.8U patent/CN217711553U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A drawer type non accessible roof manhole cover plate device Effective date of registration: 20221214 Granted publication date: 20221101 Pledgee: Industrial and Commercial Bank of China Limited Hangzhou Banshan sub branch Pledgor: ZHEJIANG XINSHENG CONSTRUCTION GROUP Co.,Ltd. Registration number: Y2022330003664 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20231204 Granted publication date: 20221101 Pledgee: Industrial and Commercial Bank of China Limited Hangzhou Banshan sub branch Pledgor: ZHEJIANG XINSHENG CONSTRUCTION GROUP Co.,Ltd. Registration number: Y2022330003664 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A drawer type non accessible roof access hole cover device Effective date of registration: 20231222 Granted publication date: 20221101 Pledgee: Industrial and Commercial Bank of China Limited Hangzhou Banshan sub branch Pledgor: ZHEJIANG XINSHENG CONSTRUCTION GROUP Co.,Ltd. Registration number: Y2023330003083 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |