CN114592750B - Crochet net with anti-shake and anti-falling structure - Google Patents
Crochet net with anti-shake and anti-falling structure Download PDFInfo
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- CN114592750B CN114592750B CN202210278009.3A CN202210278009A CN114592750B CN 114592750 B CN114592750 B CN 114592750B CN 202210278009 A CN202210278009 A CN 202210278009A CN 114592750 B CN114592750 B CN 114592750B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H17/00—Fencing, e.g. fences, enclosures, corrals
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H17/00—Fencing, e.g. fences, enclosures, corrals
- E04H17/02—Wire fencing, e.g. made of wire mesh
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H17/00—Fencing, e.g. fences, enclosures, corrals
- E04H17/02—Wire fencing, e.g. made of wire mesh
- E04H17/06—Parts for wire fences
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Catching Or Destruction (AREA)
- Emergency Lowering Means (AREA)
Abstract
The invention discloses a crochet net with a shaking and falling prevention structure, which comprises a crochet net body, a first crochet net pin group, a second crochet net pin group and a winding angle group, wherein the first crochet net pin group and the second crochet net pin group are reserved on the upper side and the lower side of the crochet net body, the winding angle group is wound above the first crochet net pin group, the second crochet net pin group penetrates through the winding angle group to form the other winding angle group, and the crochet net with the shaking and falling prevention structure is provided with the first crochet net pin group and the second crochet net pin group, so that the winding angle group after the first crochet net pin group and the second crochet net pin group are wound has a winding connection effect, and meanwhile, the winding angle group after the first crochet net pin group and the second crochet net pin group are wound has a hanging fixed connection effect, and the whole length of the crochet net is effectively prolonged sequentially.
Description
Technical Field
The invention relates to the technical field of crochet nets, in particular to a crochet net with a shaking and falling-off preventing structure.
Background
The crochet net is formed by crochet net machine crocheting by using metal wires made of various materials, can be divided into two types of a contraction handle and a holding edge, is difficult to operate when being connected by single piece or two pieces of the existing crochet net, is time-consuming to install, is easy to fall off after being installed, is easy to generate potential safety hazard, and has relative movable space and is easy to cause the condition of fingers in the playing process of children, so that the conditions of practical safety are sequentially present.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a crochet net with a shaking and falling-off prevention structure, so that the problems that the operation is difficult, the installation is time-consuming, the crochet net is easy to fall off after the installation and potential safety hazards are easy to occur when single pieces or two pieces of the prior crochet net are connected, the crochet part of the prior crochet net has relative movement space, fingers are easy to be blocked in the playing process of children, and the practicality and the safety are sequentially realized are solved.
In order to achieve the above purpose, the present invention provides the following technical solutions: the crochet net with the shaking and falling prevention structure comprises a crochet net body, a first crochet net pin group, a second crochet net pin group and a winding angle group, wherein the first crochet net pin group and the second crochet net pin group are reserved on the crochet net body up and down, the winding angle group is wound above the first crochet net pin group, the second crochet net pin group penetrates through the winding angle group to be wound into the other winding angle group, and the winding angle groups are all wound and movably connected;
by adopting the technical scheme, the first crochet net pin group and the second crochet net pin group are arranged, the winding connection effect is achieved through the first crochet net pin group and the second crochet net pin group, the hanging fixed connection effect is achieved through the winding angle group formed by winding the first crochet net pin group and the second crochet net pin group, and meanwhile the integral use length effect of the crochet net body is effectively prolonged sequentially through the first crochet net pin group and the second crochet net pin group;
the anti-blocking finger mechanism is arranged on the surface of the crochet net.
Preferably, the anti-seize finger mechanism comprises an upper connecting disc, a wrapping sheet group, a limit groove, a thread cylinder, a lower connecting disc, an alignment groove, a thread groove, a connecting groove group, a cover plate, a connecting column group and a fixing nut, wherein the wrapping sheet group is fixed on one side of the upper connecting disc, one side of the upper connecting disc is fixedly connected with the thread cylinder, the limit groove is formed in one side of the lower connecting disc, the alignment groove is formed in the other side of the lower connecting disc, the thread groove is formed in the lower connecting disc through the alignment groove in a penetrating mode, the connecting groove group is formed in the other side of the lower connecting disc, the other wrapping sheet group is fixed on one side of the lower connecting disc, one side of the cover plate is fixedly connected with one end of the connecting column group, one side of the cover plate is fixedly connected with the connecting groove group through the other connecting column group, and the other side of the cover plate is connected with the other connecting groove group in a clamping mode, and the upper connecting disc and the lower connecting disc are fixedly connected with the pattern hooking net through the fixing nut.
Through adopting above-mentioned technical scheme, be equipped with the apron, not only play fixed connection effect through the apron to thereby play atress through the apron and drive and atress relative motion effect, thereby play the effect of shielding fixation nut through the apron simultaneously, the apron is adopted elastic rubber material to make in proper order and is formed, thereby the apron that forms through elastic rubber manufacturing provides for fixation nut has good leakproofness effect.
Preferably, the winding shape of the winding angle group is in a pin shape.
Through adopting above-mentioned technical scheme, be equipped with winding angle group, play the intertwine effect equally through winding angle group to thereby play connecting rope or wire rope through connection effect through winding angle group, simultaneously play atress supporting effect and installation effect in proper order for whole crochet net body through winding angle group in proper order.
Preferably, the wrapping sheet group and the upper connecting disc are installed in an annular array mode.
Through adopting above-mentioned technical scheme, be equipped with the parcel sheet group, play fixed effect equally through the parcel sheet group to play atress through equally through the parcel sheet group and atress syntropy motion effect, play atress spacing connection effect simultaneously in proper order through the parcel sheet group.
Preferably, the distance between the opening depth of the limiting groove and the opening depth of the limiting groove is 0.5cm to 1cm.
Through adopting above-mentioned technical scheme, thereby be equipped with the spacing groove, thereby play the spacing effect of connection to parcel piece group through the spacing groove.
Preferably, the vertical length distance of the thread cylinder is smaller than the vertical length distance range of the wrapping sheet group by 0.2-0.3cm.
Through adopting above-mentioned technical scheme, be equipped with the screw thread section of thick bamboo, play fixed effect equally through screw thread section of thick bamboo one end to thereby play threaded connection effect through screw thread section of thick bamboo opposite side, play atress relative rotation motion effect between screw thread section of thick bamboo and the fixation nut simultaneously.
Preferably, the whole connection shape of the lower connecting disc and the upper connecting disc is in a wrapped cylinder shape.
Through adopting above-mentioned technical scheme, be equipped with down the connection pad, the connection pad not only plays and offers with run through and offer the effect down to play fixed effect equally through down the connection pad, play atress in proper order through down the connection pad simultaneously and drive and atress relative rotation motion effect.
Preferably, the distance between the diameters of the inner ring of the alignment groove and the outer ring of the thread groove is more than 1cm to 1.5cm.
Through adopting above-mentioned technical scheme, be equipped with the groove of registering, not only play the spacing effect of parcel to the apron through the groove of registering to the whole shape of groove of registering is the resistance shape, is the resistance shape simultaneously through the groove of registering and conveniently plays the effect of leveling the alignment of outward appearance with lower connection pad equally to apron and spliced pole in proper order.
Preferably, the distance between the clamping connection gap between the other connection groove group and the other connection column group is 0.2-0.4cm.
Through adopting above-mentioned technical scheme, be equipped with another spliced pole group, play fixed effect equally through another spliced pole group to another spliced pole group and spliced pole group all adopt rubber material to make, and the spliced pole group that forms through rubber material manufacturing simultaneously has not only stretchability but also has tensile resilience effect.
Compared with the prior art, the invention has the beneficial effects that: the crochet net with the shaking and falling preventing structure,
(1) The winding angle group is arranged, an operator manually winds the first crochet net pin group and the second crochet net pin group into a winding angle group shape, when the first crochet net pin group and the second crochet net pin group are wound into the above-mentioned conditions, the operator can conveniently penetrate the winding angle group through the steel wire rope or the connecting rope so as to facilitate the connection and installation between the crochet net bodies, the condition that a great deal of time and effort are required in the installation process between the crochet net bodies to install the crochet net bodies is avoided, the condition that the crochet net bodies are easy to fall off after being installed or in the stress process is avoided through the winding angle group in sequence, and the condition that potential safety hazards are easy to occur is avoided through the structure again;
(2) Be provided with anti-sticking finger mechanism, it runs through the crochet net body to go up the connection pad manually, then it is in the parcel connected state to run through the crochet net body equally to go up the connection pad with lower connection pad, then it is fixed with fixation nut and screw barrel to carry out spacing fixed with last connection pad and lower connection pad manually, thereby carry out parcel processing to the crochet position of crochet net body surface after last connection pad is fixed with lower connection pad, thereby there is the condition that leads to the child to play the condition that appears the card finger easily simultaneously in the time of avoiding current crochet net crochet position parcel connection process through last connection pad and lower connection pad parcel, thereby there is practical security in proper order, and thereby play the effect with fixation nut through the apron in the anti-sticking finger mechanism, guarantee simultaneously whole appearance effect of connection pad and lower connection pad.
Drawings
FIG. 1 is a schematic diagram of a front cross-sectional structure of the present invention;
FIG. 2 is an enlarged schematic view of the structure of FIG. 1A according to the present invention;
FIG. 3 is a schematic view of the structure of the upper connecting disc, the wrapping sheet set and the threaded cylinder of the invention;
FIG. 4 is a schematic view of the structure of the lower connecting disc, the fixing nut, the cover plate and the connecting column set of the invention;
FIG. 5 is a schematic view of the structure of the lower connecting disc, alignment groove, thread groove and connecting groove set of the present invention;
FIG. 6 is a schematic view of the structure of the cover plate and the connecting column set of the present invention.
In the figure: 1. the device comprises a crochet net, 101, a crochet net body, 102, a first crochet net pin group, 103, a second crochet net pin group, 104, a winding angle group, 2, an anti-jamming finger mechanism, 201, an upper connecting disc, 202, a wrapping sheet group, 203, a limit groove, 204, a threaded cylinder, 205, a lower connecting disc, 206, an alignment groove, 207, a thread groove, 208, a connecting groove group, 209, a cover plate, 210, a connecting column group, 211 and a fixing nut.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-6, the present invention provides a technical solution: as shown in fig. 1 and 2, the crochet net 1 includes a crochet net body 101, a first crochet net pin group 102, a second crochet net pin group 103 and a winding angle group 104, the first crochet net pin group 102 and the second crochet net pin group 103 are reserved on the crochet net body 101 up and down, the first crochet net pin group 102 is wound to form a winding angle group 104, the second crochet net pin group 103 penetrates through the winding angle group 104 to form another winding angle group 104, the winding angle groups 104 are connected in a winding manner, the winding shape of the winding angle group 104 is in a pin shape, the penetrating connectivity between the structural members is reflected by the overall shape of the structural members, the winding penetrability of the structure is reflected again, and the top circular arc of the structural members is reflected again, so that the situation that the first crochet net pin group 102 and the second crochet net pin group 103 protrude out of the first crochet net pin group 102 and the second crochet net pin group 102 to form a sheep angle shape is easily caused when the winding angle group 104 is in the sheep angle shape is avoided.
As shown in fig. 3, the anti-seizing finger mechanism 2 is installed on the surface of the crochet net 1, and the anti-seizing finger mechanism 2 comprises an upper connecting disc 201, a wrapping sheet group 202, a limiting groove 203, a threaded cylinder 204, a lower connecting disc 205, an alignment groove 206, a threaded groove 207, a connecting groove group 208, a cover plate 209, a connecting column group 210 and a fixing nut 211, wherein the wrapping sheet group 202 is fixed on one side of the upper connecting disc 201, the wrapping sheet group 202 and the upper connecting disc 201 are installed in an annular array mode, the above-mentioned two installation modes are installed in an annular array mode, so that the symmetry of connection between the above-mentioned two is reflected, the indirection and the staggering of the installation between the wrapping sheet group 202 and the upper connecting disc 201 are reflected, the force penetrability between the above-mentioned two and the effect of the motion limiting effect of the crochet part on the surface of the crochet net body 101 are reflected again, and the vertical length of the threaded cylinder 204 is smaller than the vertical length of the wrapping sheet group 202 by the threaded cylinder 204, if the vertical length of the threaded cylinder 204 is smaller than the vertical length of the wrapping sheet group 202 by 0.2-0.3cm, and if the vertical length of the wrapping sheet group 204 is longer than the vertical length of the wrapping sheet group 202, the above-mentioned two is installed in an annular array mode, the above-mentioned two is further, the gap is formed by the same length of the wrapping sheet group, and the distance is easy to lead to the child when the child and the child is in the situation when the playing child, and the child is in the situation.
As shown in fig. 4 and 5, a limit groove 203 is formed on one side of the lower connecting disc 205, the depth distance range of the limit groove 203 is 0.5cm to 1cm, if the depth distance of the structural member is too deep, when the package sheet group 202 is forced to penetrate into the limit groove 203 only in the contact process of the package sheet group 205 in the process of the relative motion of the package sheet group 202, the bottom of the limit groove 203 cannot be in limit contact with the package sheet group 202, when the two cannot be in the condition of penetrating the limit position contact, the connection stability of the upper connecting disc 201 and the lower connecting disc 205 is reduced in sequence by fixing the nut 211, so that the depth distance of the limit groove 203 is set to 0.5cm, the other side of the lower connecting disc 205 is prevented from being provided with an alignment groove 206, meanwhile, the lower connecting disc 205 is penetrated with a threaded groove 207 through the alignment groove 206, the inner ring diameter distance of the alignment groove 206 is larger than the outer ring diameter range of the threaded groove 207 by 1cm, the inner ring diameter distance of the alignment groove 206 is larger than the outer ring diameter distance of the threaded groove 207 by setting 1.5cm, the inner ring diameter of the alignment groove 206 is prevented from being in the same time, the upper end of the nut is prevented from being exposed to the other side of the threaded groove 206, and the other side of the lower connecting disc 205 is prevented from being exposed to the top end of the threaded nut is prevented from being in sequence, and the upper end of the upper connecting disc 205 is prevented from being exposed, and the upper end of the threaded nut is prevented from being exposed, and the upper end of the threaded nut is convenient to be exposed.
As shown in fig. 6, one side of the cover plate 209 is fixedly connected with one end of the connection column group 210, one side of the cover plate 209 is fixedly connected with the connection groove group 208 through the connection column group 210, meanwhile, the other side of the cover plate 209 is in clamping connection with the other connection groove group 208 through the other connection column group 210, the distance of the clamping connection gap between the other connection groove group 208 and the other connection groove group 210 is 0.2cm to 0.4cm, if the distance of the clamping connection gap between the other connection groove group 208 and the other connection groove group 210 is too large, the other connection groove group 208 and the other connection groove group 210 are easily penetrated under stress, but when the connecting disc 205 is in a vertical installation state, the cover plate 209 is under self gravity to drive the other connection groove group 210 and the other connection groove group 208 to be separated vertically, the top end of the fixing nut 211 is exposed to the environment when the stress separation occurs, when the top end of the fixing nut 211 is exposed to the environment for a long time, so that the oxidation-reduction reaction is easy to occur at the top end of the fixing nut 211, the installation and disassembly effects at the later stage of the fixing nut 211 are sequentially affected, so that the situation is avoided, the clamping connection gap distance between the other connecting groove group 208 and the other connecting column group 210 is set to be 0.2cm, the upper connecting disc 201 and the lower connecting disc 205 are fixedly connected with the crochet net 1 through the fixing nut 211, the whole connecting shape of the lower connecting disc 205 and the upper connecting disc 201 is in a wrapped cylinder shape, when the whole connecting shape of the lower connecting disc 205 and the upper connecting disc 201 is in a wrapped cylinder shape, the wrapping connectivity between the upper connecting disc and the lower connecting disc is reflected, the wrapping practicability between the upper connecting disc and the crochet net body 101 are reflected, the crochet part on the surface of the crochet net body is wrapped and hidden, and when the whole shape of the upper connecting disc and the lower connecting disc are in a wrapped cylinder shape again, meanwhile, the transverse diameter of the lower connecting disc 205 is larger than that of the upper connecting disc 201, so that the effect of wrapping and protecting the crocheted part on the surface of the crocheted net body 101 is achieved.
Working principle: in the use of the crochet net with the anti-shake and anti-drop structure, the connection rope or the steel wire rope is manually penetrated through the winding angle set 104 to enable the crochet net body 101 to be fixedly connected with a corresponding object through the first crochet net pin set 102 and the second crochet net pin set 103, then the upper connecting disc 201 is manually held to apply thrust to enable the crochet part of the threaded cylinder 204 penetrating through the crochet net body 101 to be in position connection through the wrapping sheet set 202, then the lower connecting disc 205 is manually held to repeat the steps to enable the other wrapping sheet set 202 to wrap the upper connecting disc 201 to be connected, then the fixing nut 211 penetrates through the thread groove 207 to be fixedly connected with the threaded cylinder 204, and then the cover plate 209 is in position-limited connection with the alignment groove 206 through the connection post set 210, so that the whole operation is completed, and the details which are not described in the specification belong to the prior art known to the person skilled in the art.
The terms "center," "longitudinal," "transverse," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used for descriptive simplicity and convenience only and not as an indication or implying that the apparatus or element being referred to must have a particular orientation, be constructed and operated for a particular orientation, based on the orientation or positional relationship illustrated in the drawings, and thus should not be construed as limiting the scope of the present invention.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.
Claims (8)
1. The utility model provides a crochet hook net with prevent rocking and drop structure, includes crochet hook net (1) and anti-sticking finger mechanism (2), its characterized in that:
the crochet net (1) comprises a crochet net body (101), a first crochet net pin group (102), a second crochet net pin group (103) and a winding angle group (104), wherein the first crochet net pin group (102) and the second crochet net pin group (103) are reserved on the crochet net body (101) up and down, the winding angle group (104) is wound above the first crochet net pin group (102), the second crochet net pin group (103) penetrates through the winding angle group (104) to be wound into the other winding angle group (104), and the winding angle groups (104) are wound and movably connected;
the anti-seizing finger mechanism (2) is arranged on the surface of the crochet net (1), the anti-seizing finger mechanism (2) comprises an upper connecting disc (201), a wrapping sheet group (202), a limit groove (203), a threaded cylinder (204), a lower connecting disc (205), an alignment groove (206), a threaded groove (207), a connecting groove group (208), a cover plate (209), a connecting column group (210) and a fixing nut (211), the wrapping sheet group (202) is fixed on one side of the upper connecting disc (201), one side of the upper connecting disc (201) is fixedly connected with the threaded cylinder (204), a limit groove (203) is formed on one side of the lower connecting disc (205), an alignment groove (206) is formed on the other side of the lower connecting disc (205), a connecting groove group (208) is formed on the other side of the lower connecting disc (205), one side of the cover plate (209) is fixedly connected with one end of the connecting column group (210), one side of the cover plate (209) is fixedly connected with the other connecting column (210) through the connecting groove group (208) through the other wrapping groove (208), the other side of the cover plate (209) is fixedly connected with the other connecting column (210) through the other connecting column group (208), the upper connecting disc (201) and the lower connecting disc (205) are fixedly connected with the crochet net (1) through fixing nuts (211).
2. The crochet hook net with shaking and falling off prevention structure according to claim 1, wherein: the winding shape of the winding angle group (104) is a pin shape.
3. The crochet hook net with shaking and falling off prevention structure according to claim 1, wherein: the wrapping sheet group (202) and the upper connecting disc (201) are installed in an annular array mode.
4. The crochet hook net with shaking and falling off prevention structure according to claim 1, wherein: the depth distance of the limiting groove (203) is 0.5cm to 1cm.
5. The crochet hook net with shaking and falling off prevention structure according to claim 1, wherein: the vertical length distance of the thread cylinder (204) is smaller than the vertical length distance range of the wrapping sheet group (202) by 0.2-0.3cm.
6. The crochet hook net with shaking and falling off prevention structure according to claim 1, wherein: the whole connection shape of the lower connecting disc (205) and the upper connecting disc (201) is in a wrapped cylinder shape.
7. The crochet hook net with shaking and falling off prevention structure according to claim 1, wherein: the diameter distance of the inner ring of the alignment groove (206) is larger than the diameter distance of the outer ring of the thread groove (207) by 1cm to 1.5cm.
8. The crochet hook net with shaking and falling off prevention structure according to claim 1, wherein: the distance of the clamping connection gap between the other connecting groove group (208) and the other connecting column group (210) is 0.2-0.4cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210278009.3A CN114592750B (en) | 2022-03-21 | 2022-03-21 | Crochet net with anti-shake and anti-falling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210278009.3A CN114592750B (en) | 2022-03-21 | 2022-03-21 | Crochet net with anti-shake and anti-falling structure |
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| Publication Number | Publication Date |
|---|---|
| CN114592750A CN114592750A (en) | 2022-06-07 |
| CN114592750B true CN114592750B (en) | 2023-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210278009.3A Active CN114592750B (en) | 2022-03-21 | 2022-03-21 | Crochet net with anti-shake and anti-falling structure |
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| CN (1) | CN114592750B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130143222A (en) * | 2012-06-21 | 2013-12-31 | 주식회사 석강 | Fence connecting device |
| CN204645828U (en) * | 2015-05-20 | 2015-09-16 | 青岛圣迪健康科技有限公司 | A kind of stainless steel wire rope hooks the dead protective screening of flower net aluminium padlock |
| CN205277017U (en) * | 2016-01-18 | 2016-06-01 | 新乡职业技术学院 | Novel protective bracket for building engineering |
| CN205400256U (en) * | 2016-02-26 | 2016-07-27 | 圣耀（集团）有限公司 | Install safe electric power protection rail fast |
| CN212224866U (en) * | 2020-04-07 | 2020-12-25 | 朱爱国 | Security fence for building engineering management |
-
2022
- 2022-03-21 CN CN202210278009.3A patent/CN114592750B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130143222A (en) * | 2012-06-21 | 2013-12-31 | 주식회사 석강 | Fence connecting device |
| CN204645828U (en) * | 2015-05-20 | 2015-09-16 | 青岛圣迪健康科技有限公司 | A kind of stainless steel wire rope hooks the dead protective screening of flower net aluminium padlock |
| CN205277017U (en) * | 2016-01-18 | 2016-06-01 | 新乡职业技术学院 | Novel protective bracket for building engineering |
| CN205400256U (en) * | 2016-02-26 | 2016-07-27 | 圣耀（集团）有限公司 | Install safe electric power protection rail fast |
| CN212224866U (en) * | 2020-04-07 | 2020-12-25 | 朱爱国 | Security fence for building engineering management |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114592750A (en) | 2022-06-07 |
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