CN111456474A - A portable protector for construction safety guarantee - Google Patents
A portable protector for construction safety guarantee Download PDFInfo
- Publication number
- CN111456474A CN111456474A CN202010307034.0A CN202010307034A CN111456474A CN 111456474 A CN111456474 A CN 111456474A CN 202010307034 A CN202010307034 A CN 202010307034A CN 111456474 A CN111456474 A CN 111456474A
- Authority
- CN
- China
- Prior art keywords
- storage box
- construction safety
- building construction
- translation
- plate
- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/32—Safety or protective measures for persons during the construction of buildings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/32—Safety or protective measures for persons during the construction of buildings
- E04G21/3261—Safety-nets; Safety mattresses; Arrangements on buildings for connecting safety-lines
- E04G21/3266—Safety nets
Abstract
The invention relates to a portable protective device for building construction safety guarantee, which comprises a safety net and connecting devices arranged at two sides of the safety net and used for connecting reinforcing steel bars, wherein each connecting device comprises a storage box, a storage mechanism and a connecting mechanism, each storage mechanism comprises a rotating shaft penetrating through two ends of the storage box, a roller coaxially fixed on the rotating shaft, and a fixed group connecting mechanism positioned at two ends of the storage box, each connecting mechanism comprises a fastening component and two connecting components, each connecting component comprises a connecting plate, a hinge, a sleeve and a threaded hole, each fastening component comprises a U-shaped connecting frame and two threaded pipes, the portable protective device for building construction safety guarantee facilitates the safety net to be firmly connected to the reinforcing steel bars through the connecting mechanisms to prevent falling off, flexible adjustment is facilitated according to the distance between the two reinforcing steel bars by using the storage mechanisms, and discontinuous multi-stage buffer protection is provided for falling personnel when a falling accident occurs, thereby the security of this protective apparatus has been strengthened, the practicality of equipment has been improved.
Description
Technical Field
The invention relates to the field of building safety guarantee, in particular to a portable protection device for building construction safety guarantee.
Background
The safety net is a net which is arranged under or on the side of the safety net and has a protection function when high-altitude building construction equipment is installed or skills are performed, so that accidents caused by falling of people or objects are prevented. The safety net is composed of a net body, a side rope, a tying rope and a reinforcing rope. The net body is formed by knitting net ropes and is provided with a rhombic or square mesh. The mesh size refers to the distance between two adjacent knots of the braid. The net ropes on the peripheral edges of the net body are called side ropes. The size of the safety net (nominal size) is determined by the size of the sidelines; the string that secures the net to the support is called the tether. In addition, the ropes for increasing the strength of the safety net are collectively called as the reinforcing ropes.
Although current safety net can play the certain function of preventing falling, but in the use, because the fixed knot of structure singleness of safety net, it is difficult between the certain reinforcing bar of distance that matches fixed dimension's safety net, and, the installation dismantlement work between safety net and the reinforcing bar is comparatively loaded down with trivial details, be connected insecure between safety net and the reinforcing bar, make the safety net drop easily, in addition, when taking place the accident of falling and someone drops on the safety net, the buffering protect function that the safety net provided is limited, thereby the practicality of current safety net has been reduced.
Disclosure of Invention
Aiming at the prior art, the technical problems to be solved by the invention are as follows: in order to overcome the defects of the prior art, the portable protection device for building construction safety guarantee is provided.
In order to solve the technical problems, the technical scheme adopted by the invention for solving the technical problems is as follows: a portable protection device for building construction safety guarantee comprises a safety net and connecting devices which are arranged on two sides of the safety net and used for connecting reinforcing steel bars;
the connecting device comprises a storage box, a storage mechanism and a connecting mechanism, the storage box is connected with the steel bars through the connecting mechanism, and one end of the safety net is arranged in the storage box through the storage mechanism;
the containing mechanism comprises a rotating shaft penetrating through two ends of the containing box, a roller coaxially fixed on the rotating shaft and fixing components positioned at two ends of the containing box, one end of the storage box, which is far away from the connecting mechanism, is provided with a strip-shaped opening, the safety net is wound on the roller through the strip-shaped opening, the fixing component comprises a plurality of convex rods which are evenly distributed on the rotating shaft in the circumferential direction and fixing units which are positioned at the upper side and the lower side of the storage box, the fixed unit comprises a translation unit, a translation plate and a buffer component positioned below the translation plate, the translation plate is connected with the storage box through the translation unit, the buffer component comprises a telescopic unit and a buffer block, the buffer block is positioned in the containing box and is connected with the translation plate through the telescopic unit, guide inclined planes which are in abutting contact with one end, far away from the rotating shaft, of the convex rod are arranged on two sides of the longitudinal section of the buffer block;
coupling mechanism includes fastening components and two coupling assembling, coupling assembling includes that the longitudinal section is half-circular arc's connecting plate, is located the hinge between connecting plate and the receiver, fixes at connecting plate outside both ends open-ended sleeve pipe and sets up the screw hole on the receiver lateral wall, fastening components includes U-shaped link and two screwed pipes, the inner wall threaded connection of sleeve pipe and its tip and screwed pipe is passed at the both ends of link, the periphery of screwed pipe with the inboard threaded connection of the screw hole on the receiver lateral wall.
Preferably, in order to avoid wear of the bumper and the nose bar, the end of the nose bar has a guide wheel.
Preferably, in order to facilitate the operation of moving the translation plate, the translation unit comprises a handle, a screw rod and a bearing, the bearing is fixed on the storage box, one end of the screw rod is fixedly connected with the handle, the other end of the screw rod is arranged in the bearing, and the translation plate is in threaded connection with the screw rod.
Preferably, the handle is provided with anti-slip lines to prevent the handle from slipping.
As preferred, for the convenience of the flexible removal of buffer block, flexible unit includes slide bar, spring and splint, the one end of slide bar is passed the translation board, the other end of slide bar passes the inner wall of receiver with buffer block fixed connection, splint be located the receiver the outside and with slide bar fixed connection, the spring is located splint with just be in compression state between the translation board.
Preferably, in order to avoid the slide rod from being separated from the translation plate, one end of the slide rod, which is far away from the buffer block, is provided with a limiting block.
Preferably, the shaft is integrally formed with the protruding rod in order to reinforce the connection of the shaft and the protruding rod.
Preferably, in order to avoid the threaded pipe from completely protruding into the storage box, the threaded pipe is provided with a flange on its outer circumference.
Preferably, in order to enhance the buffering capacity, the number of the buffering assemblies is two, and the two buffering assemblies are respectively positioned at two ends of the translation plate.
Preferably, in order to facilitate rotation of the rotating shaft, a plurality of rotating plates which are uniformly distributed in the circumferential direction are arranged at the end part of the rotating shaft, and the rotating plates abut against the storage box.
The portable protection device for building construction safety guarantee has the advantages that the safety net is conveniently and firmly connected to the reinforcing steel bars through the connecting mechanism to prevent falling off, the storage mechanism is convenient to flexibly adjust according to the distance between the two reinforcing steel bars, and discontinuous multi-stage buffer protection is provided for falling personnel when a falling accident occurs, so that the safety of the protection device is enhanced, and the practicability of the device is improved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural view of a portable protective device for building construction safety assurance according to the present invention;
FIG. 2 is a sectional view of a connection device of the handy guard for construction safety of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 1;
FIG. 4 is an enlarged view of portion B of FIG. 2;
in the figure: 1. the safety net comprises a safety net body, a storage box 2, a rotating shaft 3, a roller 4, a translation plate 5, a buffer block 6, a connecting plate 7, a hinge 8, a sleeve 9, a connecting frame 10, a guide wheel 11, a handle 12, a screw rod 13, a bearing 14, a sliding rod 15, a spring 16, a clamping plate 17, a limiting block 18, a flange 19, a rotating plate 20, a threaded pipe 21 and a convex rod 22.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
When using this protector, accessible connecting device firmly connects the both ends of safety net 1 between two reinforcing bars to utilize connecting device, conveniently accomodate safety net 1 and adjust, when someone falls on safety net 1, provide safe and reliable's buffer protection, thereby improved this protector's practicality.
As shown in fig. 2, the connecting device includes a storage box 2, a storage mechanism and a connecting mechanism, the storage box 2 is connected with the reinforcing steel bars through the connecting mechanism, and one end of the safety net 1 is arranged in the storage box 2 through the storage mechanism;
among the connecting device, be convenient for firmly be connected receiver 2 and reinforcing bar through coupling mechanism, utilize receiving mechanism convenience with safety net 1 income receiver 2 in, be convenient for adjust the part that safety net 1 exposes receiver 2 simultaneously, so, conveniently according to different distance reinforcing bars, control receiving mechanism for safety net 1 opens between two reinforcing bars.
As shown in fig. 3-4, the receiving mechanism includes pivot 3, the coaxial fixed cylinder 4 in pivot 3 and the fixed subassembly that is located receiver 2 both ends that run through receiver 2 both ends, keeping away from of receiver 2 coupling mechanism's one end is equipped with the bar mouth, safety net 1 passes through the bar mouth is convoluteed on the cylinder 4, fixed subassembly includes a plurality of circumference evenly distributed at pivot 3 on protruding pole 22 and the fixed unit that is located receiver 2 upper and lower both sides, fixed unit includes translation unit, translation board 5 and is located the buffer unit of translation board 5 below, translation board 5 passes through translation unit with receiver 2 is connected, buffer unit includes telescopic unit and buffer block 6, buffer block 6 is located in receiver 2 and pass through telescopic unit with translation board 5 is connected, the both sides of buffer block 6 longitudinal section be equipped with protruding pole 22 keep away from pivot 3 one end and lean on the guide of contact to lean on the contact A slope is formed;
coupling mechanism includes fastening components and two coupling assembling, coupling assembling includes that longitudinal section is half-circular arc's connecting plate 7, is located hinge 8 between connecting plate 7 and the receiver 2, fixes at connecting plate 7 outside both ends open-ended sleeve pipe 9 and sets up the screw hole on 2 lateral walls of receiver, fastening components includes U-shaped link 10 and two screwed pipes 21, the inner wall threaded connection of sleeve pipe 9 and its tip and screwed pipe 21 is passed at the both ends of link 10, the periphery of screwed pipe 21 with the inboard threaded connection of the screw hole on 2 lateral walls of receiver.
When the storage box 2 is installed, the connecting plates 7 on both sides of the storage box 2 are rotated by the hinges 8 so that the two semicircular arc-shaped connecting plates 7 are rotated close to each other, after being leaned together, both ends of the connecting frame 10 are passed through the sleeves 9 on the connecting plates 7, respectively, then the threaded pipe 21 is rotated on the sleeve 9 so that the threaded pipe 21 moves toward the center of the connecting frame 10, then the connecting frame 10 moves toward the storage box 2, and simultaneously the threaded pipe 21 is reversely rotated so that the threaded pipe 21 moves toward the storage box 2, is rotated into the threaded hole, and then extends into the storage box 2, so that the installation angles of the two connecting plates 7 are fixed so that the connecting plates 7 are firmly connected with the reinforcing bars, and the separation of the safety net 1 from the reinforcing bars is avoided, and when the length adjustment of the safety net 1 is performed, the translation unit is operated so that the translation plate 5 moves away from the, drive buffer block 6 to keep away from pivot 3 and remove, make buffer block 6 break away from the home range of nose bar 22, then rotate pivot 3, make the inboard cylinder 4 of receiver 2 rotate, tighten up or loosen safety net 1, be convenient for according to the length adjustment safety net 1 between two reinforcing bars expose the part of receiver 2, then operate the translation unit again, make translation board 5 near moving to receiver 2, make translation board 5 drive buffer block 6 through the telescopic unit near moving to the pivot 3 to the scope of nose bar 22 and contact, when the accident that falls, someone falls on safety net 1, except the buffer protection that safety net 1 self provided, safety net 1 drives cylinder 4 to rotate, drive nose bar 22 to rotate through pivot 3, nose bar 22 acts on boss 6, under the effect of the telescopic unit, buffer block 6 can carry out telescopic movement, buffer block 6 hinders nose bar 22 to rotate simultaneously, thereby hinder cylinder 4 and safety net 1 and rotate, so, through the hindrance effect of buffer block 6, cushion loosening of safety net 1 to provide the buffering protection to the personnel that drop, and because partial safety net 1 convolutes on cylinder 4, make at safety net 1 in-process of opening, protruding pole 22 is contacted with buffer block 6 discontinuously, thereby provides buffering protection effort discontinuously, so, has strengthened this protector's protect function, has improved the practicality of equipment.
Preferably, in order to avoid wear of the buffer block 6 and the nose bar 22, the nose bar 22 has a guide wheel 11 at its end. Utilize leading wheel 11 and buffer block 6's direction inclined plane contact, so, when making nose bar 22 rotate, leading wheel 11 rolls on buffer block 6's direction inclined plane, has reduced the effort between nose bar 22 and the buffer block 6, avoids both wearing and tearing.
As shown in fig. 4, the translation unit includes a handle 12, a screw 13 and a bearing 14, the bearing 14 is fixed on the storage box 2, one end of the screw 13 is fixedly connected with the handle 12, the other end of the screw 13 is arranged in the bearing 14, and the translation plate 5 is in threaded connection with the screw 13.
The screw 13 can be driven by the handle 12 to rotate inside the bearing 14, and the translation plate 5 is driven to rotate through the thread structure.
Preferably, the handle 12 is provided with anti-slip lines in order to prevent the handle 12 from slipping. The roughness of the surface of the handle 12 is increased by the anti-slip pattern, preventing slippage when the handle 12 is rotated.
As shown in fig. 4, the telescopic unit includes slide bar 15, spring 16 and splint 17, the one end of slide bar 15 is passed translation board 5, the other end of slide bar 15 is passed the inner wall of receiver 2 with buffer block 6 fixed connection, splint 17 be located receiver 2 the outside and with slide bar 15 fixed connection, spring 16 be located splint 17 with between translation board 5 and be in the compression state.
After nose bar 22 is used in buffer 6, produce the effort to buffer 6, make buffer 6 keep away from pivot 3 and remove, drive slide bar 15 and remove, slide bar 15 drives splint 17 and removes, make splint 17 further compression spring 16, after nose bar 22 breaks away from buffer 6, compressed spring 16 is used in splint 17, promote splint 17 and remove, act on buffer 6 through slide bar 15, make buffer 6 lean on to pivot 3 to remove, so realized the flexible removal of blotter.
Preferably, in order to avoid the sliding rod 15 from disengaging from the translating plate 5, the end of the sliding rod 15 away from the buffer block 6 is provided with a stop block 18. The movement range of the slide rod 15 is limited by the limit block 18, and the slide rod 15 is prevented from being separated from the translation plate 5.
Preferably, the rotating shaft 3 and the protruding rod 22 are integrally formed in order to reinforce the connection between the rotating shaft 3 and the protruding rod 22 by utilizing the stable structure of the integrally formed structure.
Preferably, in order to avoid the threaded pipe 21 from completely protruding into the housing case 2, the threaded pipe 21 is provided with a flange 19 on its outer periphery. Since flange 19 cannot pass through the threaded hole in storage box 2, flange 19 is prevented from entering storage box 2, and threaded pipe 21 is prevented from completely entering storage box 2.
Preferably, in order to enhance the buffering capacity, the number of the buffering assemblies is two, and the two buffering assemblies are respectively positioned at two ends of the translation plate 5. Two buffering assemblies are adopted, so that the convex rod 22 acts on the two buffering assemblies in sequence when rotating, secondary buffering protection is realized, and the buffering capacity is further enhanced.
Preferably, in order to facilitate the rotation of the rotating shaft 3, the end of the rotating shaft 3 is provided with a plurality of rotating plates 20 which are uniformly distributed in the circumferential direction, and the rotating plates 20 abut against the storage box 2. Lean on receiver 2 through rotor plate 20, prevent that pivot 3 from rotating, when adjusting operation safety net 1, accessible rotor plate 20 drives pivot 3 and carries out stable rotation.
The guard is in use held together by two webs 7, and by means of a connecting bracket 10 passing through a spigot 9 on the web 7, and the threaded pipes 21 pass through the threaded holes to fix the positions of the two connecting plates 7, so that the safety net 1 is prevented from being separated from the steel bars, moreover, the safety net 1 is convenient to be loosened and tightened on the roller 4 by the rotation of the rotating shaft 3, the flexible adjustment is convenient to be carried out according to the positions of the two reinforcing steel bars, the use of the equipment is more convenient, in addition, when a falling accident occurs, the safety net 1 drives the roller 4 and the rotating shaft 3 to rotate, so that the convex rods 22 rotate to sequentially act on the buffer blocks 6 of the buffer component, the buffer blocks 6 and the telescopic units are utilized to block the convex rods 22 from rotating, thereby provide the multistage buffering protection of discontinuity to the pivot 3 of rotating, and then strengthened the safeguard function of this equipment, improved the practicality of equipment.
Compared with the prior art, this a portable protector for construction safety guarantee is convenient for firmly connect safety net 1 on the reinforcing bar through coupling mechanism, prevents to drop, utilizes receiving mechanism to be convenient for carry out nimble regulation according to the distance of two reinforcing bars to when taking place the accident of falling, provide the multistage buffering protection of discontinuity to the personnel that fall, thereby strengthened this protective equipment's security, improved the practicality of equipment.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. The utility model provides a portable protector for construction safety guarantee which characterized in that: comprises a safety net (1) and connecting devices which are arranged at two sides of the safety net (1) and used for connecting reinforcing steel bars;
the connecting device comprises a storage box (2), a storage mechanism and a connecting mechanism, the storage box (2) is connected with the steel bars through the connecting mechanism, and one end of the safety net (1) is arranged in the storage box (2) through the storage mechanism;
the storage mechanism comprises a rotating shaft (3) penetrating through two ends of a storage box (2), a roller (4) coaxially fixed on the rotating shaft (3) and fixed assemblies positioned at two ends of the storage box (2), one end of the storage box (2) far away from the connecting mechanism is provided with a strip-shaped opening, a safety net (1) is wound on the roller (4) through the strip-shaped opening, the fixed assemblies comprise a plurality of convex rods (22) circumferentially and uniformly distributed on the rotating shaft (3) and fixed units positioned on the upper side and the lower side of the storage box (2), each fixed unit comprises a translation unit, a translation plate (5) and a buffer assembly positioned below the translation plate (5), the translation plate (5) is connected with the storage box (2) through the translation unit, each buffer assembly comprises a telescopic unit and a buffer block (6), each buffer block (6) is positioned in the storage box (2) and is connected with the translation plate (5) through the telescopic units, guide inclined planes which are abutted and contacted with one end, far away from the rotating shaft (3), of the convex rod (22) are arranged on two sides of the longitudinal section of the buffer block (6);
coupling mechanism includes fastening components and two coupling assembling, coupling assembling includes that longitudinal section is half-circular arc's connecting plate (7), is located hinge (8) between connecting plate (7) and receiver (2), fixes at connecting plate (7) outside both ends open-ended sleeve pipe (9) and sets up the screw hole on receiver (2) lateral wall, fastening components includes U-shaped link (10) and two screwed pipe (21), the inner wall threaded connection of sleeve pipe (9) and its tip and screwed pipe (21) is passed at the both ends of link (10), the periphery of screwed pipe (21) with the inboard threaded connection of the screw hole on receiver (2) lateral wall.
2. The portable protection device for building construction safety assurance of claim 1, characterized in that: the end of the protruding rod (22) is provided with a guide wheel (11).
3. The portable protection device for building construction safety assurance of claim 1, characterized in that: the translation unit includes handle (12), screw rod (13) and bearing (14), bearing (14) are fixed on receiver (2), the one end of screw rod (13) with handle (12) fixed connection, the other end setting of screw rod (13) is in bearing (14), translation board (5) with screw rod (13) threaded connection.
4. The portable protection device for building construction safety assurance of claim 3, characterized in that: the handle (12) is provided with anti-skid lines.
5. The portable protection device for building construction safety assurance of claim 1, characterized in that: the telescopic unit comprises a sliding rod (15), a spring (16) and a clamping plate (17), one end of the sliding rod (15) is penetrated through the translation plate (5), the other end of the sliding rod (15) is penetrated through the inner wall of the storage box (2) and the buffer block (6) is fixedly connected, the clamping plate (17) is positioned on the outer side of the storage box (2) and fixedly connected with the sliding rod (15), and the spring (16) is positioned between the clamping plate (17) and the translation plate (5) and is in a compression state.
6. The portable protection device for building construction safety assurance of claim 5, characterized in that: and a limiting block (18) is arranged at one end of the sliding rod (15) far away from the buffer block (6).
7. The portable protection device for building construction safety assurance of claim 1, characterized in that: the rotating shaft (3) and the convex rod (22) are integrally formed.
8. The portable protection device for building construction safety assurance of claim 1, characterized in that: the periphery of the threaded pipe (21) is provided with a flange (19).
9. The portable protection device for building construction safety assurance of claim 1, characterized in that: the number of the buffer assemblies is two, and the buffer assemblies are respectively positioned at two ends of the translation plate (5).
10. The portable protection device for building construction safety assurance of claim 1, characterized in that: the tip of pivot (3) has a plurality of circumference evenly distributed's rotor plate (20), rotor plate (20) support and lean on receiver (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010307034.0A CN111456474A (en) | 2020-04-17 | 2020-04-17 | A portable protector for construction safety guarantee |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010307034.0A CN111456474A (en) | 2020-04-17 | 2020-04-17 | A portable protector for construction safety guarantee |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111456474A true CN111456474A (en) | 2020-07-28 |
Family
ID=71685971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010307034.0A Withdrawn CN111456474A (en) | 2020-04-17 | 2020-04-17 | A portable protector for construction safety guarantee |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111456474A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113062578A (en) * | 2021-03-25 | 2021-07-02 | 中交二航局成都城市建设工程有限公司 | Liftable mobile operation platform |
| CN113279593A (en) * | 2021-05-21 | 2021-08-20 | 惠州市铭安建筑工程有限公司 | Recyclable air defense falling net |
| NO20201254A1 (en) * | 2020-11-18 | 2022-05-19 | Kongshavn Industri As | Device for preventing an object from falling through a gap |
-
2020
- 2020-04-17 CN CN202010307034.0A patent/CN111456474A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO20201254A1 (en) * | 2020-11-18 | 2022-05-19 | Kongshavn Industri As | Device for preventing an object from falling through a gap |
| NO346430B1 (en) * | 2020-11-18 | 2022-08-08 | Kongshavn Industri As | Device for preventing an object from falling through a gap |
| CN113062578A (en) * | 2021-03-25 | 2021-07-02 | 中交二航局成都城市建设工程有限公司 | Liftable mobile operation platform |
| CN113279593A (en) * | 2021-05-21 | 2021-08-20 | 惠州市铭安建筑工程有限公司 | Recyclable air defense falling net |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200728 |