CN216840539U - Safety rope fixing device for building external scaffold - Google Patents

Safety rope fixing device for building external scaffold Download PDF

Info

Publication number
CN216840539U
CN216840539U CN202220578084.7U CN202220578084U CN216840539U CN 216840539 U CN216840539 U CN 216840539U CN 202220578084 U CN202220578084 U CN 202220578084U CN 216840539 U CN216840539 U CN 216840539U
Authority
CN
China
Prior art keywords
safety
base
buckle
steel pipe
rope
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202220578084.7U
Other languages
Chinese (zh)
Inventor
刘天光
姚顺民
周冀伟
顾帅林
陈武
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Construction First Group Corp Ltd
Original Assignee
China Construction First Group Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Construction First Group Corp Ltd filed Critical China Construction First Group Corp Ltd
Priority to CN202220578084.7U priority Critical patent/CN216840539U/en
Application granted granted Critical
Publication of CN216840539U publication Critical patent/CN216840539U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Emergency Lowering Means (AREA)

Abstract

The utility model discloses an external scaffolding sets up and uses safety rope fixing device, include: the pair of fasteners are symmetrically arranged on the two steel pipe vertical rods, and any one fastener is detachably and fixedly connected with the corresponding steel pipe vertical rod; the pair of ring buckles are arranged between the pair of fasteners, one fastener is correspondingly provided with one ring buckle, and any ring buckle is arranged on the corresponding fastener; one ring buckle is correspondingly provided with one safety buckle, and any safety buckle is buckled with the corresponding ring buckle; and two ends of the connecting rope are respectively connected with a pair of safety buckles, and the safety buckles are buckled on the connecting rope. The utility model discloses the beneficial effect of efficiency of construction and construction safety nature that the improvement external scaffolding set up has.

Description

Safety rope fixing device for building external scaffold
Technical Field
The utility model relates to a fixed technical field of safety rope. More specifically, the utility model relates to an outer scaffold frame sets up and uses safety rope fixing device.
Background
The outer scaffold frame is set up and is mostly the aerial work, and dangerous great, relevant standard requires, and the workman must wear the safety rope and just can carry out the aerial work. When the safety rope is used, one end of the safety rope is worn on a worker, the other end of the safety rope is buckled on the steel pipe cross rod of the outer scaffold, and the steel pipe vertical rod and the steel pipe cross rod are connected through the buckle, so that the moving range of the safety rope is limited, and the worker needs to repeatedly disassemble and assemble the safety rope in the process of erecting the outer scaffold on site, so that the construction efficiency is reduced; moreover, the repeated assembly and disassembly operations are complicated, so that the safety rope can be forgotten, and potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
It is an object of the present invention to solve at least the above problems and to provide at least the advantages which will be described later.
The utility model discloses it is still another purpose to provide an outer scaffold puts up and uses safety rope fixing device, has the beneficial effect that improves the efficiency of construction and the construction security that outer scaffold put up.
In order to achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a safety rope fixing device for external scaffolding, comprising:
the pair of fasteners are symmetrically arranged on the two steel pipe vertical rods, and any one fastener is detachably and fixedly connected with the corresponding steel pipe vertical rod;
the pair of buckles are arranged between the pair of fasteners, one fastener is correspondingly provided with one buckle, and any buckle is arranged on the corresponding fastener;
one ring buckle is correspondingly provided with one safety buckle, and any safety buckle is buckled with the corresponding ring buckle;
and two ends of the connecting rope are respectively connected with a pair of safety buckles, and the safety ropes are buckled on the connecting rope.
Preferably, the connecting rope is a steel wire rope.
Preferably, both ends of the connecting rope respectively penetrate through the corresponding safety buckles and are fixed through a plurality of U-shaped steel wire rope clamping heads.
Preferably, any one of the fasteners is a right angle half fastener comprising:
a base, wherein a semicircular first groove is formed in one side surface of the base;
one end of the cover plate is hinged with one end of the base through a pin shaft, a second groove corresponding to the first groove is arranged on one side surface of the cover plate close to the base, and a bayonet is arranged at the other end of the cover plate;
one end of the first screw rod is fixedly arranged at the other end of the base, and the other end of the first screw rod penetrates through the bayonet and is fastened through a nut.
Preferably, any buckle is of a semi-annular structure, and two ends of any buckle are welded to the other side face of the corresponding base.
Preferably, any one of the buttons is made of galvanized round steel with a diameter of 10 mm.
Preferably, any fastener further comprises four clamping mechanisms which are arranged at intervals along the circumferential direction of the steel pipe vertical rod, and the base and the cover plate are respectively provided with two clamping mechanisms; any chucking mechanism includes:
the arc-shaped plate is positioned in the first groove/the second groove corresponding to the arc-shaped plate, and the arc-shaped plate and the first groove/the second groove are arranged concentrically;
one end of the second screw rod is rotatably connected with the arc-shaped plate, and the other end of the second screw rod extends in the direction far away from the steel pipe vertical rod along the radial direction of the steel pipe vertical rod and penetrates out of the base/cover plate corresponding to the second screw rod; the second screw rod is in threaded connection with the corresponding base/cover plate;
and the pair of connecting rods are symmetrically arranged at two ends of the arc-shaped plate, any connecting rod is parallel to the second screw rod, one end of any connecting rod is fixedly connected with the outer side surface of the arc-shaped plate, the other end of the connecting rod is in sliding connection with the corresponding base/cover plate, and the base/cover plate does not limit the movement of any connecting rod along the length direction of the second screw rod.
Preferably, a rubber layer is laid on the inner side surface of any one of the arc-shaped plates, and a plurality of anti-slip ribs which are arranged in the vertical direction are arranged on the rubber layer.
The utility model discloses at least, include following beneficial effect:
the utility model is provided with a pair of fasteners, a pair of buckles, a pair of safety buckles and a connecting rope, wherein one fastener is correspondingly provided with one buckle, the pair of safety buckles are arranged at the two ends of the connecting rope, and one safety buckle is buckled on one buckle; with a pair of fastener rigid coupling in two steel pipe pole settings, connect the rope and connect between two steel pipe pole settings, for the workman provides the department of hanging of safety rope, the structure is firm, the workman carries out outer scaffold frame set up the operation with safety rope lock joint on connecting the rope, the home range of safety rope is big, it is more convenient to remove the construction, can improve the efficiency of construction that outer scaffold frame set up, and can greatly reduce the number of times of the dismouting operation of safety rope, be favorable to improving the security of construction.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic structural view of a safety rope fixing device for setting up an external scaffold according to one embodiment of the present invention;
fig. 2 is a schematic structural view of the use effect of the safety rope fixing device for setting up an external scaffold according to one embodiment of the present invention;
fig. 3 is a perspective view of the fastener according to one embodiment of the present invention;
fig. 4 is a schematic structural view of the fastener according to one embodiment of the present invention;
fig. 5 is a schematic structural view of the fastener according to one embodiment of the present invention;
description of reference numerals: a fastener 1; a steel pipe upright rod 2; a buckle 3; a safety buckle 4; a wire rope 5; a U-shaped steel wire rope chuck 6; a base 7; a cover plate 8; a pin shaft 9; a bayonet 10; a first screw 11; a nut 12; an arc-shaped plate 13; a second screw 14; a connecting rod 15.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
It should be noted that, in the description of the present invention, the directions or positional relationships indicated are the directions or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, and the indication or suggestion that the indicated device or element must have a specific direction, be constructed and operated in a specific direction is not understood as a limitation of the present invention.
As shown in fig. 1-5, the utility model provides an external scaffolding sets up and uses safety rope fixing device, include:
the pair of fasteners 1 are symmetrically arranged on the two steel pipe upright posts 2, and any one fastener 1 is detachably and fixedly connected with the corresponding steel pipe upright post 2;
a pair of buckles 3, which are arranged between the pair of fasteners 1, one buckle 1 is correspondingly provided with one buckle 3, and any buckle 3 is arranged on the corresponding buckle 1;
one ring buckle 3 of the pair of safety buckles 4 is correspondingly provided with one safety buckle 4, and any safety buckle 4 is buckled with the corresponding ring buckle 3;
and two ends of the connecting rope are respectively connected with a pair of safety buckles 4, and the safety ropes are buckled on the connecting rope.
In the technical scheme, when the external scaffold is erected, a pair of fasteners 1 are respectively and fixedly installed on two steel pipe vertical rods 2 with proper construction operation ranges, the height of the pair of fasteners 1 is proper, so that a connecting rope is located at a proper position above a worker, the worker fastens the other end of a safety rope worn on the body on the connecting rope, after a one-step rod piece is erected from one end to the other end along the connecting rope, the worker lifts the fastener 1 located at the other end of the connecting rope by a corresponding height and fixedly installs the fastener on the steel pipe vertical rod 2 corresponding to the fastener on the other end, after the worker erects an upper-layer one-step rod piece from the other end to one end along the connecting rope, the fastener 1 located at one end of the connecting rope is lifted by the corresponding height, and the steps are repeated until the erection operation of the external scaffold is completed;
in addition, when the disk-buckled steel pipe external scaffold is erected, because the disk-buckled steel pipe upright stanchions 2 are provided with an octagonal disk at a certain interval, the pair of safety buckles 4 can be detached from the pair of buckle rings without using the pair of fasteners 1 and the pair of buckle rings, the pair of safety buckles 4 are directly buckled on the two octagonal plates respectively, so that the connecting rope is positioned above a worker, the worker buckles the other end of the safety rope worn on the body on the connecting rope, and after the worker sets up a rod piece from one end to the other end along the connecting rope, the safety buckle 4 at the other end of the connecting rope is buckled on the octagonal plate above, after a worker sets up a one-step rod piece at the upper layer from the other end to one end along the connecting rope, then, buckling a safety buckle 4 positioned at one end of the connecting rope on the upper octagonal plate, and repeating the steps until the erection operation of the plate buckle type steel pipe external scaffold is completed;
the utility model is provided with a pair of fasteners 1, a pair of buckles 3, a pair of safety buckles 4 and a connecting rope, one fastener 1 is correspondingly provided with one buckle 3, the pair of safety buckles 4 are arranged at two ends of the connecting rope, and one safety buckle 4 is buckled on one buckle 3; the pair of fasteners 1 are fixedly arranged on the two steel pipe vertical rods 2, so that the connecting rope is connected between the two steel pipe vertical rods 2, a hanging part of the safety rope is provided for workers, the structure is stable, the workers connect the safety rope on the connecting rope in a buckling mode to carry out external scaffold erecting operation, the moving range of the safety rope is large, the moving construction is more convenient, the construction efficiency of the external scaffold erecting can be improved, the times of the disassembling and assembling operation of the safety rope can be greatly reduced, and the construction safety is improved; in addition, the buckle 1 is provided with the ring buckle 3, the two ends of the connecting rope are provided with the safety buckles 4, the safety buckles 4 are buckled on the ring buckle 3, the detachable connection of the buckle 1 and the connecting rope is realized, the connecting rope is convenient to replace while the structural stability is ensured, the length of the connecting rope is changed, the connecting rope can be suitable for the construction of one-step rod pieces with different spans, the application range is wider, and the construction efficiency is favorably ensured; moreover, the connecting rope detached from the fastener 1 can be buckled on the octagonal disc of the disc buckle type steel pipe vertical rod 2 through the safety buckle 4, the erection operation of the disc buckle type outer scaffold is carried out, the construction is more convenient, and the application range is further expanded, and the construction efficiency is improved.
In another kind of technical scheme, the connection rope is wire rope 5, and wire rope 5's intensity is high, is favorable to the security of the steadiness and the construction of guarantee structure, and wire rope 5 can be for being equipped with the wire rope 5 of the adjustable length of turn buckle, through the adjustable wire rope 5's of turn buckle length, is favorable to expanding application scope.
In another technical scheme, two ends of the connecting rope respectively penetrate through the corresponding safety buckles 4 and are fixed through a plurality of U-shaped steel wire rope clamping heads 6; rope ends and rope body chucking at the two ends of the connecting rope are connected through a plurality of U-shaped steel wire rope clamping heads 6, and then the two ends of the connecting rope are connected with the corresponding safety buckles 4, so that the stability of the structure is improved.
In another technical solution, any fastener 1 is a right-angle half fastener 1, which includes:
a base 7, one side of which is provided with a semicircular first groove;
one end of the cover plate 8 is hinged with one end of the base 7 through a pin shaft 9, a second groove corresponding to the first groove is arranged on one side surface, close to the base 7, of the cover plate 8, and a bayonet 10 is arranged at the other end of the cover plate 8;
one end of the first screw 11 is fixedly arranged at the other end of the base 7, and the other end of the first screw 11 penetrates through the bayonet 10 and is fastened through a nut 12;
when the fastener 1 needs to be fixedly mounted on the steel pipe upright rod 2, the first groove of the base 7 faces the steel pipe upright rod 2 and is positioned on the outer side of the steel pipe upright rod 2, the cover plate 8 is rotated towards the direction close to the base 7, the first screw 11 penetrates through the bayonet 10, the steel pipe upright rod 2 penetrates through the fastening hole, a structure formed by the base 7, the cover plate 8 and the first screw 11 is sleeved on the steel pipe upright rod 2, the nut 12 is sleeved at the other end of the first screw 11, the nut 12 is rotated to fasten the nut 12 and the cover plate 8, and the fastener 1 is further fixedly mounted on the steel pipe upright rod 2; when the fastener 1 needs to be detached from the steel pipe upright 2, the nut 12 is unscrewed, the cover plate 8 is rotated towards the direction away from the base 7, and the fastener 1 is taken down; the detachable fixed connection is realized through the right-angle half-fastener 1 and the steel pipe vertical rod 2, the installation and the disassembly are convenient, and the structural stability is high.
In another technical scheme, any buckle 3 is of a semi-annular structure, and two ends of any buckle 3 are welded on the other side surface of the base 7 corresponding to the buckle; the connecting strength of the ring buckle 3 and the fastener 1 is high, which is beneficial to further ensuring the stability of the structure and prolonging the service life.
In another technical scheme, any buckle 3 is made of galvanized round steel with the diameter of 10mm, and the buckle 3 is proper in strength and favorable for further guaranteeing the stability of the structure.
In another technical scheme, any fastener 1 further comprises four clamping mechanisms which are arranged at intervals along the circumferential direction of the steel pipe upright rod 2, and the base 7 and the cover plate 8 are respectively provided with two clamping mechanisms; any chucking mechanism includes:
the arc-shaped plate 13 is positioned in the corresponding first groove/second groove, and the arc-shaped plate 13 and the first groove/second groove are concentrically arranged;
one end of the second screw 14 is rotatably connected with the arc-shaped plate 13, and the other end of the second screw extends in the radial direction of the steel pipe vertical rod 2 and is far away from the steel pipe vertical rod 2 and penetrates out of the base 7/the cover plate 8 corresponding to the second screw; the second screw 14 is in threaded connection with the base 7/cover plate 8 corresponding to the second screw; a first through hole matched with the second screw 14 is formed in the base 7/cover plate 8, the first through hole penetrates through the base 7/cover plate 8 along the radial direction of the steel pipe vertical rod 2, internal threads matched with the second screw 14 are formed in the side wall of the first through hole, the second screw 14 is in threaded connection with the first through hole, and the other end of the second screw 14 is located on the outer side of the base 7/cover plate 8;
the pair of connecting rods 15 are symmetrically arranged at two ends of the arc-shaped plate 13, any connecting rod 15 is parallel to the second screw 14, one end of any connecting rod 15 is fixedly connected with the outer side surface of the arc-shaped plate 13, the other end of the connecting rod 15 is in sliding connection with the base 7/cover plate 8 corresponding to the connecting rod, and the base 7/cover plate 8 does not limit the movement of any connecting rod 15 along the length direction of the second screw 14;
the inner side surface of the arc-shaped plate 13 always faces to the circle center of the first groove/the second groove by arranging the pair of connecting rods 15, so that the rotation of the second screw 14 cannot drive the arc-shaped plate 13 to rotate; the second screw 14 is rotated to enable the arc-shaped plates 13 to move along the radial direction of the steel pipe vertical rod 2, so that the positions of the arc-shaped plates 13 are adjusted, the four arc-shaped plates 13 form buckling holes for the steel pipe vertical rod 2 in a surrounding mode, and the fastener 1 is fixedly installed on the steel pipe vertical rod 2 through the four clamping mechanisms; through rotating second screw 14, adjust the position of arc 13, can make fastener 1 be applicable to not unidimensional steel pipe pole setting 2, be favorable to further expanding application scope.
The technical scheme also comprises the following technical details so as to better realize the technical effects: a second through hole matched with any connecting rod 15 is formed in the base 7/cover plate 8, the second through hole penetrates through the base 7/cover plate 8 along the length direction of the second screw 14, the other end of any connecting rod 15 extends into the corresponding second through hole, the side wall of the connecting rod is connected with the side wall of the second through hole in a sliding mode, and any first connecting rod 15 can move along the length direction of the second screw 14; two third grooves are respectively arranged on the first groove and the second groove, one arc plate 13 is correspondingly provided with one third groove with the size matched with the size, when the arc plate 13 moves to the limit towards the direction far away from the steel pipe vertical rod 2 along the radial direction of the steel pipe vertical rod 2, the arc plate 13 is accommodated in the corresponding third groove, and the inner side surface of the arc plate 13 and the side surface of the first groove/the second groove are positioned on the same arc surface; when any one of the arc-shaped plates 13 is accommodated in the corresponding third groove, the arc-shaped plate 13 cannot occupy the space of the buckling hole surrounded by the first groove and the second groove, and the size of the steel pipe vertical rod 2 applicable at the moment is largest, which is beneficial to expanding the application range.
In another technical scheme, a rubber layer is laid on the inner side surface of any one of the arc-shaped plates 13, and a plurality of anti-slip ribs which are distributed along the vertical direction are arranged on the rubber layer; the friction of the arc-shaped plate 13 and the steel pipe vertical rod 2 is increased, so that the connection between the fastener 1 and the steel pipe vertical rod 2 is more firm, and the stability of the structure is further improved.
While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.

Claims (8)

1. External scaffolding sets up and uses safety rope fixing device, its characterized in that includes:
the pair of fasteners are symmetrically arranged on the two steel pipe vertical rods, and any one fastener is detachably and fixedly connected with the corresponding steel pipe vertical rod;
the pair of buckles are arranged between the pair of fasteners, one fastener is correspondingly provided with one buckle, and any buckle is arranged on the corresponding fastener;
one ring buckle is correspondingly provided with one safety buckle, and any safety buckle is buckled with the corresponding ring buckle;
and two ends of the connecting rope are respectively connected with a pair of safety buckles, and the safety buckles are buckled on the connecting rope.
2. The safety rope fixing device for building external scaffolds as claimed in claim 1, wherein the connecting rope is a steel wire rope.
3. The safety rope fixing apparatus for external scaffolding according to claim 2, wherein both ends of the connection rope pass through the corresponding safety buckles, respectively, and are fixed by a plurality of U-shaped wire rope clamps.
4. A safety line attachment for external scaffolding according to claim 1 in which either fastener is a right angle half fastener comprising:
a base, wherein a semicircular first groove is formed in one side surface of the base;
one end of the cover plate is hinged with one end of the base through a pin shaft, a second groove corresponding to the first groove is arranged on one side surface of the cover plate close to the base, and a bayonet is arranged at the other end of the cover plate;
one end of the first screw rod is fixedly arranged at the other end of the base, and the other end of the first screw rod penetrates through the bayonet and is fastened through a nut.
5. The safety rope fixing device for external scaffolding according to claim 1, wherein any one of the clasps is of a semi-annular configuration, and both ends of any one of the clasps are welded to the other side of the base corresponding thereto.
6. A safety line attachment for external scaffolding according to claim 5 in which any one of the eye-clasps is made of galvanized round steel of 10mm diameter.
7. The safety rope fixing device for external scaffolding according to claim 4, wherein any one of the fasteners further comprises four clamping mechanisms spaced apart along the circumference of the steel pipe upright, and two clamping mechanisms are provided on the base and the cover plate, respectively; any chucking mechanism includes:
the arc-shaped plate is positioned in the first groove/the second groove corresponding to the arc-shaped plate, and the arc-shaped plate and the first groove/the second groove are arranged concentrically;
one end of the second screw rod is rotatably connected with the arc-shaped plate, and the other end of the second screw rod extends in the direction far away from the steel pipe vertical rod along the radial direction of the steel pipe vertical rod and penetrates out of the base/cover plate corresponding to the second screw rod; the second screw rod is in threaded connection with the corresponding base/cover plate;
the two ends of the arc-shaped plate are symmetrically arranged on the two connecting rods, any connecting rod is parallel to the second screw, one end of any connecting rod is fixedly connected with the outer side face of the arc-shaped plate, the other end of the connecting rod is connected with the corresponding base/cover plate in a sliding mode, and the base/cover plate does not limit the movement of any connecting rod along the length direction of the second screw.
8. The safety rope fixing device for building external scaffolds as claimed in claim 7, wherein a rubber layer is coated on the inner side surface of any one of the arc-shaped plates, and a plurality of anti-slip ribs are vertically arranged on the rubber layer.
CN202220578084.7U 2022-03-17 2022-03-17 Safety rope fixing device for building external scaffold Active CN216840539U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202220578084.7U CN216840539U (en) 2022-03-17 2022-03-17 Safety rope fixing device for building external scaffold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202220578084.7U CN216840539U (en) 2022-03-17 2022-03-17 Safety rope fixing device for building external scaffold

Publications (1)

Publication Number Publication Date
CN216840539U true CN216840539U (en) 2022-06-28

Family

ID=82096485

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202220578084.7U Active CN216840539U (en) 2022-03-17 2022-03-17 Safety rope fixing device for building external scaffold

Country Status (1)

Country Link
CN (1) CN216840539U (en)

Similar Documents

Publication Publication Date Title
CN110984572A (en) Template clamping equipment for building reinforcement
CN114658283B (en) Electric power tower installation equipment
CN216840539U (en) Safety rope fixing device for building external scaffold
CN112962996A (en) Steel structure engineering safety rope suspension device and application
CN203654880U (en) Safety fence
CN211499704U (en) External protection frame for construction of centering assembly type shear wall structure
CN211499705U (en) External protection frame for construction of assembled shear wall structure
CN210563357U (en) Construction safety supporting rod for building scaffold
CN211341665U (en) Scaffold for building construction
CN211114774U (en) Mounting tool for erecting external scaffold
CN210067510U (en) Safety belt/safety rope hook device
CN218261677U (en) Sewage treatment diving equipment hoisting device
CN214658656U (en) Be applied to variable pitch pole with adjustable multipurpose of construction
CN218324024U (en) Steel pipe faces limit protection combination external member
CN218010682U (en) Safety rope fixer
CN216429112U (en) Adjustable faces limit protector
CN219343957U (en) Auxiliary device for installing outer frame steel pipe
CN219118689U (en) Steel scaffold for constructional engineering
CN220098286U (en) Hoisting structure
CN216197807U (en) Cat ladder is torn open in ann of bridge support system
CN215629322U (en) T roof beam is interim with dismantling support
CN218815140U (en) Turnover external frame wall-attached device
CN213245273U (en) Security protection device for construction
CN214658661U (en) Adjustable overhanging type bearing device for building outer wall
CN210509019U (en) Combined safety ladder stand and pier column connecting and fixing device

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant