CN211815194U - Railway transportation loading and unloading line roadbed protection structure - Google Patents
Railway transportation loading and unloading line roadbed protection structure Download PDFInfo
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- CN211815194U CN211815194U CN201921599004.0U CN201921599004U CN211815194U CN 211815194 U CN211815194 U CN 211815194U CN 201921599004 U CN201921599004 U CN 201921599004U CN 211815194 U CN211815194 U CN 211815194U
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Abstract
The utility model provides a railway transportation loading and unloading line roadbed protection structure, which comprises a base, a plurality of reinforcing steel beams, a scratch-resistant steel plate and a top cover, wherein the base is fixedly arranged at the bottom of a discharge pit and abuts against the side wall of the discharge pit, the reinforcing steel beams are fixedly arranged on the upper surface of the base, the scratch-resistant steel plate is positioned in the discharge pit and is fixedly connected with the reinforcing steel beams, the top covers are fixedly arranged at the top ends of the reinforcing steel beams, one side of each top cover abuts against the side wall of the discharge pit, and; wherein, the reinforcing steel bar beam is provided with a fixing piece, and the scratch-resistant steel plate is connected on the fixing piece; and a pouring cavity for pouring concrete is enclosed among the anti-scraping steel plate, the base and the side wall of the discharge pit. The utility model provides a railway transportation loading and unloading line road bed protection architecture, excavator are when the dump pit is shoveled, and the shovel dynamic force of scraper bowl is in resisting on scraping the steel sheet, and the anti steel sheet of scraping bears scraping of scraper bowl and moves and to pouring chamber propagation effort, and the concrete of pouring intracavity cushions the effort to avoid the road bed directly to receive the impact and scrape, and then eliminate the hidden danger that leads to the vehicle to tumble because of the road bed damage.
Description
Technical Field
The utility model belongs to the technical field of the railway roadbed reinforcement, more specifically say, relate to a railway transportation loading and unloading line road bed protection architecture.
Background
In today's industrial environment, higher transport efficiency can be achieved by transporting materials by rail; a transport vehicle for loading materials travels from a starting station to a destination station, and loads and unloads materials on the way, and a position where the transport vehicle loads or unloads materials is called a loading and unloading line.
The method is characterized in that an excavator is adopted to assist the material loading and unloading process, and is one of common railway transportation modes in the metallurgical industry, specifically, the excavator is driven to the position of a loading and unloading line on a slag layer on one side of a track (the slag layer is positioned on a roadbed and used for supporting the track), and then the excavator is operated to empty a discharge pit on the side where the excavator is positioned (namely, original materials or impurities in the discharge pit are removed through a bucket of the excavator); the transport vehicle is then parked in this position and the hopper of the transport vehicle is opened, and the material in the hopper flows into the discharge pit.
At the in-process that the excavator was clear away original material, the scraper bowl acted on the side of road bed, uses the excavator to assist loading and unloading for a long time, very easily makes road bed or sediment stone layer towards the side of discharge pit, also is the lateral wall of discharge pit and is dug out the pit, has haulage vehicle or excavator hidden danger of tumbling.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a railway transportation loading and unloading line road bed protection architecture aims at solving because of the excavator scraper bowl shovels the lateral wall of discharge pit and leads to sediment stone layer or discharge pit impaired, and then causes haulage vehicle or excavator hidden danger of tumbling.
In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a railway transportation loading and unloading line road bed protection architecture includes:
the base is arranged at the bottom of the discharge pit and is abutted against the side wall of the discharge pit;
the reinforcing steel beams are provided with a plurality of reinforcing steel beams, each reinforcing steel beam is perpendicular to the upper surface of the base and is fixedly connected with the upper surface of the base, and a fixing piece is arranged on each reinforcing steel beam;
the scraping-resistant steel plate is positioned in the discharge pit and connected with the fixing piece, and a pouring cavity for pouring concrete is defined by the scraping-resistant steel plate, the base and the side wall of the discharge pit; and
and the top cover is fixedly arranged at the top ends of the steel bar beams, one side of the top cover is used for being abutted to the side wall of the discharge pit, and the other side of the top cover is connected with the upper part of the scratch-resistant steel plate and is used for sealing the pouring cavity.
As another embodiment of this application, the mounting includes the connecting rod, the one end of connecting rod with reinforcing bar roof beam fixed connection, the other end of connecting rod with the side fixed connection of anti steel sheet of scraping.
As another embodiment of this application, every be equipped with many on the reinforcing bar roof beam the connecting rod, and many the connecting rod is followed the length direction interval of reinforcing bar roof beam sets up.
As another embodiment of this application, same root the length of many spinal branchs connecting rod on the reinforcing bar roof beam from top to bottom reduces gradually.
As another embodiment of the present application, the lengths of the connecting rods located on the same horizontal plane are the same.
As another embodiment of this application, the anti steel sheet of scraping is equipped with the multiunit, every adjacent two the anti steel sheet of scraping all has between the anti steel sheet of scraping and is used for preventing the flexible interval that the anti steel sheet atress is uneven of scraping.
As another embodiment of the application, one side of the top cover is used for being inserted into the slag layer at the top end of the side wall of the discharge pit.
As another embodiment of the present application, an upper surface of the top cap is configured to be disposed coplanar with an upper surface of the ballast stone layer.
As another embodiment of the present application, the base is cast of concrete.
The utility model provides a railway transportation loading and unloading line road bed protection architecture's beneficial effect lies in: the scraping-resistant steel plate is fixed on one side of the roadbed by arranging the base, the steel bar beam and the fixing piece; pouring concrete into the pouring cavity to form a pouring cavity filled with concrete between the scratch-resistant steel plate and the roadbed; during practical application, originally, the scraper bowl that supports to the side of the road bed will be used in the anti-scraping steel plate, and the scraping of scraper bowl has been alleviated on the surface of anti-scraping steel plate, and the concrete of pouring intracavity has alleviated the effort that the scraper bowl produced to the road bed to avoid the condition that the scraper bowl direct action leads to the road bed to damage the side of road bed. Compared with the prior art, the utility model provides a railway transportation loading and unloading line road bed protection architecture effectively has avoided the scraper bowl to the destruction of road bed side through setting up the anti steel sheet of scraping and the pouring chamber that is full of the concrete, has eliminated the hidden danger that haulage vehicle or excavator tumbled.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is one of cross-sectional views of a railway transportation loading and unloading line roadbed protection structure provided by the embodiment of the utility model;
fig. 2 is a second cross-sectional view of the protection structure for the roadbed of the railway transportation loading and unloading line provided by the embodiment of the invention;
fig. 3 is a third cross-sectional view of the protection structure for the roadbed of the railway transportation loading and unloading line provided by the embodiment of the utility model.
In the figure, 1, a base; 2. a steel bar beam; 3. a scratch-resistant steel plate; 31. the telescopic distance; 4. a pouring cavity; 5. a top cover; 6. a connecting rod; 100. a roadbed; 110. a discharge pit; 120. a slag stone layer; 130. a track.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 3 together, the protection structure of the railway transportation loading and unloading line roadbed provided by the present invention will now be described. The railway transportation loading and unloading line roadbed protection structure comprises a base 1, a plurality of steel bar beams 2, scratch-resistant steel plates 3 and a top cover 5, wherein the base 1 is fixedly arranged at the bottom of a discharge pit 110 and abuts against the side wall of the discharge pit 110; wherein, each reinforcing steel bar 2 is provided with a fixing piece, and the scratch-resistant steel plate 3 is connected with the fixing piece, thereby realizing the fixed connection with the reinforcing steel bar beam 2; the side of the top cover 5 not abutting the side wall of the discharge pit 110 abuts the upper portion of the scratch-resistant steel plate 3.
In the prior art, the side of the roadbed 100 directly acted on by the bucket of the excavator is located below the ballast stone layer 120, but since the lower part of the discharge pit 110 also belongs to the roadbed 100, for convenience of description and avoidance of misunderstanding, the roadbed 100 in this embodiment represents the roadbed 100 below the ballast stone layer 120, i.e. the part directly acted on by the bucket.
In addition, on the railway transportation loading and unloading line, the rails 130 guide the transport vehicle, thereby limiting the direction of the transport vehicle when unloading, namely the position of the unloading pit 110; by providing the discharge pits 110 at both sides of the rail 130, a more convenient and efficient discharging effect is achieved. Because the structure of the discharge pits 110 on both sides is the same, the faced technical problem is also the same (namely, the bucket of the excavator can destroy the side wall of the discharge pit 110), therefore, in this embodiment, only how to protect one side of the roadbed 100 by the railway transportation loading and unloading line roadbed protection structure provided by the utility model can be explained clearly. The sides of the roadbed 100 in the embodiment are the sides of the roadbed 100 facing the discharge pit 110, that is, the inner walls of the discharge pit 110 facing the rail 130, that is, the parts directly acted on by the bucket.
The fixing pieces are arranged on the reinforced beam 2, the scratch-resistant steel plate 3 is used for forming a pouring cavity 4 for pouring concrete with the base 1, the slag stone layer 120 and the roadbed 100 below the slag stone layer 120, and the top cover 5 is used for sealing the top of the poured pouring cavity 4 and protecting the concrete in the pouring cavity 4 to prevent the concrete from being damaged; if the roof 5 is not provided, it may happen that the concrete is damaged by the material in the transport vehicle or even that the material enters the interior of the casting cavity 4.
In addition, in order to save the material of the reinforced beams 2 and ensure the best effect of supporting the top cover 5, a plurality of reinforced beams 2 are vertically connected with the upper surface of the base 1, and the bottom surface of the top cover 5 is arranged in parallel with the upper surface of the base 1; and, many reinforcing bars 2 evenly arrange along the direction of track 130, and specifically, haulage vehicle direction of advance is the same with the direction of track 130 on loading and unloading line, and many reinforcing bars 2 are fixed the setting on base 1 along haulage vehicle's direction of advance, can make many reinforcing bars 2 the same with the interval of road bed 100 to avoid the anti steel sheet 3 of scraping of different positions to the interval of road bed 100 different. If the interval of 3 to the road bed 100 of anti steel sheet of scraping is different, can lead to the material loss that is used for making 3 of anti steel sheet of scraping, the emergence of the equal problem of unable installation in reinforcing bar roof beam 2 of anti steel sheet of scraping 3.
The utility model provides a railway transportation loading and unloading line road bed protection architecture's installation flow as follows:
a. arranging a base 1 at the bottom of the discharge pit 110, and enabling the base 1 to be abutted against the side face of the roadbed 100;
b. arranging a plurality of reinforcing steel beams 2 on the base 1, wherein the reinforcing steel beams 2 are vertical to the upper surface of the base 1 and are uniformly arranged along the extension direction of the track 130;
c. the scratch-resistant steel plate 3 is fixedly arranged on the reinforced beam 2 through a fixing piece on the reinforced beam 2;
d. pouring concrete into the pouring cavity 4;
e. after the concrete is solidified, the top cover 5 is fixedly installed at the top end of the steel bar beam 2, one side of the top cover 5 is abutted to the scratch-resistant steel plate 3, the other side of the top cover is inserted into the slag stone layer 120 or is positioned in the same vertical plane with the side face of the slag stone layer 120, and the installation is completed.
Through adopting above-mentioned technical scheme, at the excavator to the in-process that the discharge pit 110 was emptied, the scraper bowl of excavator supports on the outer wall of anti steel sheet 3 of scraping, the power of scraping that the tooth portion produced on the scraper bowl is dissolved by the outer wall of anti steel sheet 3 of scraping, the scraper bowl with anti effort of scraping the steel sheet 3 counterbalance and producing is cushioned by the pouring chamber 4 that is full of the concrete, make the part that this effort acts on the side of road bed 100 be not enough to cause the destruction to road bed 100 to reach the technological effect of protection road bed 100. The utility model provides a railway transportation loading and unloading line road bed protection architecture compares with prior art, through setting up the anti pouring chamber 4 of scraping steel sheet 3 and being full of the concrete, has effectively avoided the scraper bowl to the destruction of road bed 100 side, has eliminated the hidden danger that haulage vehicle or excavator tumbled.
Please refer to fig. 1, as a specific embodiment of the protection structure for the roadbed of the loading and unloading line for railway transportation according to the present invention, the fixing member includes a connecting rod 6 having one end fixedly connected to the reinforcing steel bar beam 2, the other end of the connecting rod 6 is fixedly connected to one side of the anti-scraping steel plate 3 facing the roadbed 100, and the connecting rod 6 is connected to the anti-scraping steel plate 3, and the bottom of the anti-scraping steel plate 3 is abutted to the base 1.
Through adopting above-mentioned technical scheme, will resist and scrape the fixed setting of steel sheet 3 on connecting rod 6, after the scraper bowl acted on the anti steel sheet 3 of scraping, the anti steel sheet 3 of scraping can not break away from reinforcing bar roof beam 2.
Moreover, the connecting rod 6 is arranged differently from other connecting modes; the distance from the scratch-resistant steel plate 3 to the steel bar beam 2 can be controlled by setting the length of the connecting rod 6, and the volume of the pouring cavity 4 can be controlled; that is, the longer the length of the connecting rod 6 is taken, the larger the volume of the pouring cavity 4 is, and the better the concrete-filled pouring cavity 4 formed after pouring has a buffering effect on the force generated by the bucket.
In order to make the connection between the reinforcing steel bar beam 2 and the anti-scraping steel plate 3 tighter, please refer to fig. 1, as a specific implementation manner of the railway transportation loading and unloading line roadbed protection structure provided by the utility model, the connecting rod 6 is at least provided with two groups of length directions along the reinforcing steel bar beam 2 and is evenly arranged.
For avoiding anti steel sheet 3 that scrape influence the process of unloading of transport vechicle, need to anti steel sheet 3 slope settings of scraping, and make anti steel sheet 3 of scraping slope in to the discharge pit 110 from top to bottom, in order to realize this technical scheme, please refer to figure 1, as the utility model provides a railway transportation loading and unloading line roadbed protection structure's a concrete implementation mode, on same reinforcing bar roof beam 2, the length ratio of the connecting rod 6 who is located the top is less than the length of the connecting rod 6 who is located the below, specifically, the one end coplane of many connecting rods 6 on same reinforcing bar roof beam 2, and this end and reinforcing bar pit 2 fixed connection, the line of the other end from top to bottom is the slash to unloading 110 internal inclination, and this end is connected with anti steel sheet 3 of scraping. That is to say, many connecting rods 6 on same root reinforcing bar roof beam 2 are the isosceles trapezoid and discharge, can make like this and scrape 3 slope settings of steel sheet.
The scraping-resistant steel plate 3 is arranged in an oblique manner, so that materials can slide into the discharging pit 110 along with the slope of the scraping-resistant steel plate 3 during discharging; if the anti-scraping steel plate 3 is not obliquely arranged, the materials are discharged from the transport vehicle and are conveyed into the discharge pit 110, and material accumulation can occur on one side of the discharge pit 110 close to the transport vehicle, so that the material accumulation can be avoided by obliquely arranging the anti-scraping steel plate 3; simultaneously, when clearing up the accumulational discharge pit 110 of material, the scraper bowl of excavator will frequently be used in the anti steel sheet 3 of scraping to shortened the anti life who scrapes steel sheet 3, that is to say, the slope sets up anti steel sheet 3 of scraping, can play the anti effect of scraping the life of steel sheet 3 of extension.
Because the anti steel sheet 3 of scraping is connected with the connecting rod 6 of multiunit reinforcing bar roof beam 2, to avoid on the same horizontal plane the length difference of connecting rod 6 to lead to the anti steel sheet 3 of scraping to take place the ascending slope of horizontal direction, please refer to fig. 1 to 3 together, as the utility model provides a railway transportation loading and unloading line road bed protection architecture's a concrete implementation mode, the length that is located the connecting rod 6 of same horizontal plane is the same, specifically, the one end fixed connection of connecting rod 6 on same horizontal plane is on reinforcing bar roof beam 2, because reinforcing bar roof beam 2 is the same with the interval of road bed 100 and the length of connecting rod 6 is the same, consequently the other end of connecting rod 6 is located same straight line, the anti steel sheet 3 homoenergetic of scraping on same horizontal plane is connected with the tip fixed connection of connecting.
When the excavator is actually used, a bucket of the excavator is abutted against the anti-scraping steel plate 3, the possibility that the surface of the anti-scraping steel plate 3 is settled due to uneven stress exists, and after the settlement occurs, cracks are generated on the surface of the anti-scraping steel plate 3, so that certain property loss is caused; therefore, for avoiding the anti steel sheet 3 that scrapes surface emergence settlement phenomenon, please refer to collectively and draw in fig. 2 and fig. 3, as the utility model provides a railway transportation loading and unloading line roadbed protection structure's a concrete implementation mode, anti steel sheet 3 of scraping is equipped with the multiunit, and adjacent anti scraping is equipped with between the steel sheet 3 and is used for preventing to resist scraping the flexible interval 31 that the steel sheet 3 atress is uneven.
Specifically, the plurality of sets of the scratch-resistant steel plates 3 are arranged along the extending direction of the rail 130, and when the bucket of the excavator acts on the scratch-resistant steel plates 3, the acting force of the bucket is dissolved by one set or two sets of the scratch-resistant steel plates 3, so that the condition that the surface stress of the scratch-resistant steel plates 3 is uneven is avoided; therefore, the length of the scratch-resistant steel plate 3 should be equal to or slightly greater than the width of the bucket, regardless of the extension direction of the rail 130, and the width of the telescopic gap 31 should be ensured not to affect the pouring process in the pouring chamber 4.
When unloading, opening the hopper of the transport vehicle, and allowing the materials in the hopper to sequentially pass through the slag stone layer 120, the top cover 5 and the scratch-resistant steel plate 3 to enter the unloading pit 110, wherein in the process, in order to ensure that the materials are not lost, the top cover 5 not only has the function of sealing the pouring cavity 4, but also avoids the influence on the flow of the materials between the slag stone layer 120 and the scratch-resistant steel plate 3; if the horizontal plane of the upper surface of the top cover 5 is located at the upper part of the horizontal plane of the upper surface of the slag stone layer 120, the material can be clamped on the side surface of the top cover 5, and further the material cannot flow into the discharge pit 110, so that the material loss is caused. Therefore, in order to avoid the material loss, please refer to fig. 1, as a specific embodiment of the roadbed protecting structure of the railway transportation loading and unloading line, the other side of the top cover 5 is inserted into the slag layer 120 at the top end of the side wall of the discharge pit 110.
By adopting the technical scheme, the horizontal plane of the upper surface of the top cover 5 is positioned below the horizontal plane of the upper surface of the slag stone layer 120, or the horizontal plane of the upper surface of the top cover 5 is coplanar with the horizontal plane of the upper surface of the slag stone layer 120; after the material is discharged in the car hopper of transport vechicle, through sediment stone layer 120 and fall on the upper surface of top cap 5, the anti steel sheet 3 of scraping of later material flow direction below, and then let in discharge pit 110, effectively avoided the condition of material jam, avoid the material extravagant.
Similar to the above situation, when the horizontal plane of the upper surface of the top cap 120 is located below the horizontal plane of the upper surface of the ballast stone layer 120, a part of the material still remains on the top cap 120, so as to avoid the occurrence of such a phenomenon, please refer to fig. 1, as a specific embodiment of the roadbed protecting structure of the railway transportation loading and unloading line, the upper surface of the top cap 120 is coplanar with the upper surface of the ballast stone layer 120.
The embodiment of the railway transportation loading and unloading line roadbed protection structure provided by the utility model describes the installation process of the slope protection, wherein, because the base 1 is arranged along the extension direction of the track 130, the base 1 needs to be manufactured on site; in order to practice thrift the time of preparation base 1, conduct the utility model provides a railway transportation loading and unloading line road bed protection architecture's a concrete implementation mode, base 1 is formed by concrete placement.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A railway transportation loading and unloading line roadbed protection structure is characterized by comprising:
the base (1) is arranged at the bottom of the discharge pit (110) and is abutted against the side wall of the discharge pit (110);
the reinforcing steel bar beam (2) is provided with a plurality of reinforcing steel bar beams, each reinforcing steel bar beam (2) is perpendicular to and fixedly connected with the upper surface of the base (1), and a fixing piece is arranged on each reinforcing steel bar beam (2);
the scraping-resistant steel plate (3) is positioned in the discharge pit (110) and is connected with the fixing piece, and a pouring cavity (4) for pouring concrete is defined by the scraping-resistant steel plate (3), the base (1) and the side wall of the discharge pit (110); and
and the top cover (5) is fixedly arranged at the top ends of the reinforcement beams (2), one side of the top cover is used for being abutted against the side wall of the discharge pit (110), and the other side of the top cover is connected with the upper part of the scratch-resistant steel plate (3) and used for sealing the pouring cavity (4).
2. The railway transportation handling line subgrade protection structure of claim 1, wherein: the mounting includes connecting rod (6), the one end of connecting rod (6) with reinforcing bar roof beam (2) fixed connection, the other end of connecting rod (6) with the side fixed connection of anti steel sheet (3) of scraping.
3. The railway transportation handling line subgrade protection structure of claim 2, wherein: every be equipped with many on reinforcing bar roof beam (2) connecting rod (6), and many connecting rod (6) are followed the length direction interval of reinforcing bar roof beam (2) sets up.
4. A railway transport handling line subgrade protection structure according to claim 3, characterized in that: the length of the connecting rods (6) on the steel bar beam (2) is gradually reduced from top to bottom.
5. A railway transportation handling line subgrade protection structure according to any one of claims 2 to 4, characterized in that: the connecting rods (6) located on the same horizontal plane have the same length.
6. The railway transportation handling line subgrade protection structure of claim 1, wherein: the anti-scraping steel plate (3) is provided with a plurality of groups, every two adjacent anti-scraping steel plates (3) are all provided with a telescopic space (31) for preventing the anti-scraping steel plates (3) from being stressed unevenly.
7. The railway transportation handling line subgrade protection structure of claim 1, wherein: one side of the top cover (5) is used for being inserted into the slag stone layer (120) at the top end of the side wall of the discharge pit (110).
8. The railway transportation handling line subgrade protection structure of claim 7, wherein: the upper surface of the top cover (5) is coplanar with the upper surface of the slag stone layer (120).
9. The railway transportation handling line subgrade protection structure defined in any one of claims 1-4 and 6-8, wherein: the base (1) is formed by pouring concrete.
10. A railway transport handling line subgrade protection structure according to claim 5, characterized in that: the base (1) is formed by pouring concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921599004.0U CN211815194U (en) | 2019-09-24 | 2019-09-24 | Railway transportation loading and unloading line roadbed protection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921599004.0U CN211815194U (en) | 2019-09-24 | 2019-09-24 | Railway transportation loading and unloading line roadbed protection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211815194U true CN211815194U (en) | 2020-10-30 |
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ID=72994773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921599004.0U Expired - Fee Related CN211815194U (en) | 2019-09-24 | 2019-09-24 | Railway transportation loading and unloading line roadbed protection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211815194U (en) |
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2019
- 2019-09-24 CN CN201921599004.0U patent/CN211815194U/en not_active Expired - Fee Related
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| TR01 | Transfer of patent right |
Effective date of registration: 20210621 Address after: 067000 Chenggang No.1 office building, Shuangluan District, Chengde City, Hebei Province Patentee after: Chengde Chenggang Logistics Co.,Ltd. Address before: 067000 A block 520, Luanhe town finance square, Shuangluan District, Chengde, Hebei Patentee before: CHENGDE BRANCH OF HBIS Group |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201030 |
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| CF01 | Termination of patent right due to non-payment of annual fee |