CN213385916U - Protective fence - Google Patents
Protective fence Download PDFInfo
- Publication number
- CN213385916U CN213385916U CN202021160396.3U CN202021160396U CN213385916U CN 213385916 U CN213385916 U CN 213385916U CN 202021160396 U CN202021160396 U CN 202021160396U CN 213385916 U CN213385916 U CN 213385916U
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- fence
- movable rod
- rail
- unit
- protective
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Abstract
The utility model discloses a protection rail, protection rail includes rail portion and lower rail portion, go up rail portion include first rail unit and install in the first movable rod of a plurality of first rail unit lower extreme, lower rail subassembly include second rail unit and install in a plurality of second movable rod of second rail unit upper end, wherein, the first movable rod of a plurality of with a plurality of second movable rod one-to-one constitutes a plurality of and is in the movable rod group of same axis, and the first movable rod of each movable rod group passes through the telescopic component with the second movable rod and is connected, the utility model provides a protection rail divide into rail portion and lower rail portion to through the flexible activity between the first movable rod of each movable rod group, second movable rod and the telescopic component of realization between rail portion and the lower rail portion.
Description
Technical Field
The utility model relates to a protection technology field especially relates to a protection rail.
Background
In the ash discharging process of an ash storehouse of a thermal power plant, a driver climbs to an ash can top cover and cleans, and a safety belt needs to be worn due to the fact that overhead operation is involved.
According to the safety requirements, the driver of the ash tank truck must wear a five-point safety belt, the mobility of workers of the ash tank truck is high, the safety consciousness is weak, the number of workers is large, the management and control that the five-point safety belt must be worn in the operation process are difficult, the wearing of the safety belt and the fixed hanging point on the roof brings inconvenience to the operation, and therefore the driver climbs the ash tank truck and the roof operation in the ash unloading process have large safety risks.
The above is only for the purpose of assisting understanding of the technical solutions of the present invention, and does not represent an admission that the above is the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a protection rail, aim at solving among the prior art the ash storehouse of thermal power plant and unload the problem that ash in-process driver climbing ash tank car and roof operation have great safe risk.
In order to achieve the above object, the utility model provides a protection fence, including last rail portion and lower rail portion, go up rail portion include first rail unit and install in the first movable rod of a plurality of first rail unit lower extreme, down the rail subassembly include second rail unit and install in a plurality of second movable rod of second rail unit upper end, wherein, the first movable rod of a plurality of with a plurality of second movable rod one-to-one constitutes a plurality of and is in the movable rod group of same axis, and the first movable rod of each movable rod group passes through the telescopic component with the second movable rod and is connected.
Optionally, the telescopic assembly includes telescopic rods, the upper ends of the telescopic rods are respectively and fixedly connected to the first movable rods through supporting blocks, and the lower ends of the telescopic rods are respectively and fixedly connected to the second movable rods through supporting blocks.
Optionally, each of the telescopic rods further includes an outer sleeve and an inner sleeve, each of the inner sleeves is sleeved in each of the outer sleeves and slidably connected to each of the outer sleeves, the upper end of each of the outer sleeves is fixedly connected to each of the first movable rods through a support block, and the lower end of each of the inner sleeves is fixedly connected to the second movable rod of each of the movable rod groups through a support block.
Optionally, each telescopic link is internally provided with an air cylinder, and the air cylinder is respectively arranged at the bottom end inside each outer sleeve and is respectively positioned at the lower side of each inner sleeve.
Optionally, the protective fence further includes a proximity switch, the proximity switch is disposed at an upper end edge of the first fence unit and/or a lower end edge of the second fence unit, and the proximity switch is electrically connected to the telescopic assembly through a circuit.
Optionally, the first fence unit includes a plurality of first sub-fence units, the plurality of first sub-fence units are sequentially and fixedly connected to form the first fence unit, wherein the second fence unit includes a plurality of second sub-fence units, and the plurality of second sub-fence units are sequentially and fixedly connected to form the second fence unit.
Optionally, each first sub-fence unit includes two first horizontal protective fences and a plurality of first vertical support bars, wherein two ends of each first vertical support bar are respectively connected to the two first horizontal protective fences, and the first vertical support bars are connected to the two first horizontal protective fences at equal intervals.
Optionally, each second sub-fence unit includes two second horizontal protection fences and a plurality of second vertical support rods, wherein two ends of each second vertical support rod are respectively connected to the two second horizontal protection fences, and the plurality of second vertical support rods are connected to the two second horizontal protection fences at equal intervals.
Optionally, the protective fence further comprises a horizontal touch rod, and two ends of the horizontal touch rod are connected with the left end and the right end of the upper fence part or the lower fence part respectively through a vertical connecting rod and are located on the upper side of the upper end edge part of the upper fence part or on the lower side of the lower end edge part of the lower fence part.
Optionally, the protection fence is applied to a dust warehouse, the dust warehouse comprises a cross beam of the dust warehouse, a cross beam connecting piece is arranged at the edge part of the upper end of the first fence unit of the upper fence assembly, and the cross beam connecting piece is detachably connected with the cross beam of the dust warehouse.
The protection rail of this embodiment, including last rail portion and lower rail portion, go up rail portion include first rail unit and install in the first movable rod of a plurality of first rail unit lower extreme, down the rail subassembly include second rail unit and install in a plurality of second movable rod of second rail unit upper end, wherein, the first movable rod of a plurality of with a plurality of second movable rod one-to-one constitutes a plurality of and is in the movable rod group of same axis, and the first movable rod and the second movable rod of each movable rod group pass through telescopic component and are connected, the utility model provides a protection rail divides into rail portion and lower rail portion to realize the flexible activity between rail portion and the lower rail portion between first movable rod, second movable rod and the telescopic component through each movable rod group.
Drawings
Fig. 1 is a schematic plan view of a part of the structure of the front side of the protective fence according to the present invention;
fig. 2 is a schematic view of the telescopic sliding plane of the telescopic assembly of the protective fence according to the present invention;
FIG. 3 is a schematic plan view of another part of the protective enclosure of the present invention;
fig. 4 is a perspective view of the upper rail portion of the protective rail of the present invention;
fig. 5 is a perspective view of the lower rail portion of the protective rail of the present invention.
The reference numbers illustrate:
| reference numerals | Assembly | Reference numerals | Assembly | |
| 1a | A first |
3 | |
|
| 1b | First sub-fence unit | 4 | Telescopic assembly | |
| 1ba | First horizontal protective fence | 4aa | Outer sleeve | |
| 1bb | First vertical support rod | 4ab | |
|
| 2a | Second | 4b | Cylinder | |
| 2b | |
5a | Horizontal touch rod | |
| 2ba | Second horizontal |
5b | Vertical connecting rod | |
| 2bb | Second vertical support rod | 6 | Proximity switch |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the parts, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a protective fence, in the first embodiment of the protective fence of the utility model, the protective fence comprises an upper fence part and a lower fence part, the upper fence part comprises a first fence unit and a plurality of first movable rods arranged at the lower end of the first fence unit, the lower fence component comprises a second fence unit and a plurality of second movable rods arranged at the upper end of the second fence unit, wherein, understandably, taking the first fence unit as an example, if the first fence unit is a cuboid, a plurality of first movable rods 1a are uniformly arranged at four corners at the lower end of the first fence unit of the cuboid, if the first fence unit is a cylinder, a plurality of first movable rods 1a are uniformly arranged at equal intervals at the lower end of the first fence unit of the cylinder, wherein, the interval distance can be set according to the actual situation, further, the lower fence component comprises a second fence unit and a plurality of second movable rods arranged at the upper end of the second fence unit, the first movable rods of each movable rod group are connected with the second movable rods through telescopic assemblies, the upper ends of the telescopic rods are fixedly connected with the first movable rods through supporting blocks, and the lower ends of the telescopic rods are fixedly connected with the second movable rods through supporting blocks.
In this embodiment, taking a cuboid first fence unit as an example, the structure of the present invention is described, specifically, referring to fig. 1, fig. 1 is a schematic structural view of a front portion of a protective fence, an upper fence assembly includes a second fence unit and a plurality of second movable rods 2a, the second movable rods 2a are installed at the upper end of the second fence unit at equal intervals, further, the first movable rods 1a are connected to the lower end of the first fence unit through supporting blocks 3, a lower fence assembly includes a second fence unit and a plurality of second movable rods 2a, the second movable rods 2a are installed at the upper end of the second fence unit at equal intervals, specifically, the second movable rods 2a are connected to the upper end of the second fence unit through supporting blocks 3, wherein the second movable rods 2a at corresponding positions of the first movable rods 1a are movably connected with the first movable rods 1a through telescopic assemblies 4, specifically, the first movable rod 1a and the second movable rod 2a are both hollow structures, wherein optionally, the inner diameter of the first movable rod 1a is larger than the inner diameter of the second movable rod 2a, so that the second movable rod 2a can be inserted into the first movable rod 1a, and further, the length of the first movable rod 1a in the vertical direction is larger than or equal to the length of the second movable rod 2a in the vertical direction, so that the second movable rod 2a can be controlled by the telescopic assembly to freely extend and slide in the first movable rod 1 a.
It should be noted that the protection fence further includes a horizontal touch rod, both ends of the horizontal touch rod are connected with the left and right ends of the upper fence portion or the lower fence portion through a vertical connecting rod respectively, and are located at the upper side of the upper end edge portion of the upper fence portion or the lower side of the lower end edge portion of the lower fence portion, optionally, referring to fig. 1, the protection fence includes a horizontal touch rod 5a, the horizontal touch rod 5a is connected with the telescopic assemblies 4 at the left and right ends of the upper fence portion or the lower fence portion through a vertical connecting rod 5b, specifically, referring to fig. 1, the vertical connecting rod 5b is connected with the telescopic assemblies 4 through supporting blocks 3, and is located at the lower side of the lower edge portion of the lower fence portion, optionally, the vertical connecting rod 5b can be directly connected with the telescopic assemblies 4, and is located at the lower side of the lower edge portion of the lower fence portion, wherein, optionally, the vertical connecting rod 5b can be extended up, and can be rotated 360 degrees around the side edge of the upper fence portion and the side edge of the lower fence portion to be flexibly disposed on the upper side of the upper end edge portion of the upper fence portion or the lower side of the lower end edge portion of the lower fence portion, based on the structure proposed by the present invention, an embodiment is proposed, specifically, before the deployment of the protection fence, the lower edge portion of the upper fence portion is in close contact with the upper edge portion of the lower fence portion, and the vertical connecting rod 5b is in a contracted state to make the horizontal touch rod 5a in close contact with the upper edge portion of the upper fence portion or the lower edge portion of the lower fence portion, when the deployment of the protection fence is performed, the vertical connecting rod 5b connected with the horizontal touch rod 5a is extended to make the horizontal touch rod 5a deployed to a preset position, then the lower fence portion is extended downward by operating the telescopic assembly 4 until the interval between the lower edge portion of the lower fence portion and the horizontal touch rod is smaller than a preset interval, control flexible subassembly 4 stop work, wherein, optionally, through the flexible subassembly 4 stop work of manual control, optionally, flexible subassembly 4 includes by inductor, power device and power supply unit, and when the interval between lower border portion and the horizontal touch pole of rail portion was less than predetermineeing the interval under the inductor induction, send outage signal to power supply unit to make power supply unit stop the power supply to power device, stop work with control power device, thereby realize flexible subassembly 4 automatic stop work.
It should be noted that, referring to fig. 1, the retractable assembly 4 includes a proximity switch 6, the proximity switch 6 is disposed at an upper end edge portion of the first fence unit and/or a lower end edge portion of the second fence unit, and is used for monitoring a distance between a lower edge portion of the lower fence assembly and the horizontal touch rod 4a and/or lower shields of other lower fence assemblies, and/or a distance between an upper edge portion of the upper fence assembly and the horizontal touch rod 4a and/or upper shields of other upper fence assemblies, so as to control the retractable limit of the retractable assembly 4, wherein, specifically, an installation position and an installation number of the proximity switch 6 are not limited, that is, optionally, one or a plurality of proximity switches 6 are disposed at the upper end edge portion of the first fence unit, or one or a plurality of proximity switches 6 are disposed at the lower end edge portion of the second fence unit, or both the upper end edge portion of the first fence unit and the lower end edge portion of the second fence unit are disposed at the same time Establish one or a plurality of proximity switch 6, furtherly, proximity switch 6 passes through the circuit and establishes electric connection with flexible subassembly 4, specifically, based on the utility model provides a structure, in the protection rail, including one or a plurality of telescopic link, wherein, all connect through between a circuit and the proximity switch in each telescopic link to lower marginal part and the horizontal touch pole 4a of rail subassembly or other interval that lower rail subassembly downside sheltered from between the thing under the control according to proximity switch, or go up the last marginal part and the horizontal touch pole 4a of rail subassembly or other interval that go up between the rail subassembly upside shelter from the thing, and according to circuit synchronous signal transmission to each flexible subassembly limit control that stretches out and draws back.
Further, referring to fig. 2, the telescopic assembly 4 of each movable rod group further includes a telescopic rod, the upper end of the telescopic rod of each movable rod group is fixedly connected to the first movable rod 1a of the movable rod group through a supporting block 3, the lower end of the telescopic rod is fixedly connected to the second movable rod 2a of the movable rod group through a supporting block 3, specifically, the telescopic rod includes an outer sleeve 4aa and an inner sleeve 4ab, the inner sleeve 4ab is sleeved in the outer sleeve 4aa and is slidably connected to the outer sleeve 4ab, further, referring to fig. 1, the upper end of the outer sleeve 4ab is fixedly connected to the first movable rod 1a through a supporting block 3, and the lower end of the inner sleeve 4ab is fixedly connected to the second movable rod 2a through a supporting block 3.
It should be noted that, referring to fig. 2, an air cylinder 4b is further disposed inside the telescopic rod 4a of each movable rod set, the air cylinder 4b is disposed at the bottom end inside the outer sleeve 4aa, and is positioned at the lower side of the inner sleeve 4ab, specifically, one end of the cylinder is smooth, the other end is provided with a protruding telescopic movable piston, specifically, one end of the cylinder which is smooth is connected with the bottom end in the outer sleeve, the other end faces the inner sleeve direction and is positioned at the lower side of the inner sleeve, namely, the piston of the cylinder is connected with the bottom end of the inner sleeve, in the structure of the utility model, the telescopic rod is provided with the power of telescopic sliding through the cylinder, after the cylinder is started, the piston of the cylinder slides upwards or downwards, and because the piston of the cylinder is connected with the inner sleeve, therefore, when the piston of the cylinder moves upwards or downwards, the piston of the cylinder drives the inner sleeve connected with the piston to telescopically slide relative to the outer sleeve.
Further, based on the structure of the protection fence, another embodiment is provided, wherein if the telescopic extent of the telescopic rod is too large, so that the distance between the upper fence portion and the lower fence portion is too large, which causes difficulty in climbing between the upper fence portion and the lower fence portion, optionally, the lower edge portion of the upper fence portion is provided with two first engagement ports, and the upper edge portion of the lower fence portion is provided with two second engagement ports, wherein the two first engagement ports and the two engagement ports are respectively located on the same vertical axis, further, the protection fence is provided with an emergency box in which a flexible ladder stand can be stored, wherein the length of the flexible ladder stand can be flexibly controlled, the two end edges of the flexible ladder stand are respectively provided with an engagement part, wherein the engagement parts are detachably connected with the first engagement ports and the second engagement ports, that is, the telescopic extent of the telescopic rod is too large, and when the distance between the upper fence part and the lower fence part is too large, the worker is difficult to crawl between the upper fence part and the lower fence part, the worker can take out the flexible crawling ladder from the emergency box of the protective fence, and the connecting part of the flexible crawling ladder is connected with the first connecting port and the second connecting port respectively.
It should be noted that, referring to fig. 3, the first fence unit includes a plurality of first sub-fence units 1b, wherein, a plurality of first sub-fence units 1b are sequentially and fixedly connected to form the first fence unit, each first sub-fence unit 1b includes two first horizontal protective fences 1ba and a plurality of first vertical support rods 1bb, wherein, both ends of each first vertical support rod 1bb are respectively connected with the two first horizontal protective fences 1ba, the first vertical support rods 1bb are equally spaced and connected with the two first horizontal protective fences 1ba, in the structure of the utility model, taking the first sub-fence unit of the cuboid as an example, referring to fig. 4, the first sub-fence unit 1b includes two first horizontal protective fences 1ba and a plurality of first vertical support rods 1bb, the four first vertical support rods 1bb are respectively connected with the four ends of the two first horizontal protective fences 1ba A portion for forming the first sub-fence unit 1b, referring to fig. 5, the second fence unit includes a plurality of second sub-fence units 2b, wherein the plurality of second sub-fence units 2b are sequentially and fixedly connected to form the second fence unit, each of the second sub-fence units 2b includes two second horizontal protective fences 2ba and a plurality of second vertical support rods 2bb, wherein two ends of each of the second vertical support rods 2bb are respectively connected to the two second horizontal protective fences 2ba, the plurality of second vertical support rods 2bb are connected to the two second horizontal protective fences 2ba at equal intervals, in the structure of the present invention, taking the second sub-fence unit of a rectangular parallelepiped as an example, referring to fig. 5, the second sub-fence unit 2b includes two second horizontal protective fences 2ba and a plurality of second vertical support rods 2bb, the four second vertical supporting rods 2bb are respectively connected with the four ends of the two second horizontal protective fences 2ba to form the second sub-fence unit 1 b.
Based on the utility model provides a structure provides an embodiment, the protection rail is applied to the ash storehouse, the ash storehouse includes an ash storehouse crossbeam, the last marginal part of going up the first rail unit of rail subassembly is equipped with the crossbeam linking piece, the crossbeam linking piece with the connection can be dismantled to the ash storehouse crossbeam, furtherly, the last marginal part of going up the rail subassembly still is equipped with a proximity switch 6 for the last marginal part of rail subassembly and the interval of ash storehouse crossbeam in the control, in order to carry out the flexible limit control of subassembly 4 that stretches out and draws back.
The upper fence part provided by the embodiment comprises a first fence unit and a plurality of first movable rods arranged at the lower end of the first fence unit, the lower fence component comprises a second fence unit and a plurality of second movable rods arranged at the upper end of the second fence unit, wherein the plurality of first movable rods and the plurality of second movable rods are correspondingly combined into a plurality of movable rod groups in the same axis one by one, and the first movable rods and the second movable rods of each movable rod group are connected through telescopic components, the protection fence provided by the utility model is divided into an upper fence part and a lower fence part, and telescopic activities between the upper fence part and the lower fence part are realized through the first movable rods, the second movable rods and the telescopic components of each movable rod group, and further, the telescopic limit control of the telescopic components is realized through a proximity switch electrically connected with the telescopic components, so as to avoid the damage of the protective fence caused by excessive expansion.
While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The utility model provides a protection rail, its characterized in that, protection rail includes rail portion and lower rail portion, goes up rail portion including first rail unit and install in the first movable rod of a plurality of first rail unit lower extreme, down the rail subassembly include second rail unit and install in a plurality of second movable rod of second rail unit upper end, wherein, the first movable rod of a plurality of with a plurality of second movable rod one-to-one constitutes a plurality of and is in the movable rod group of same axis, and the first movable rod of each movable rod group passes through the telescopic component with the second movable rod and is connected.
2. The protective fence of claim 1 wherein said telescoping assembly comprises telescoping rods, each of said telescoping rods having an upper end fixedly connected to each of said first movable bars by a support block, and each of said telescoping rods having a lower end fixedly connected to each of said second movable bars by a support block.
3. The protective fence of claim 2, wherein each of the telescopic rods further comprises an outer sleeve and an inner sleeve, each of the inner sleeves is sleeved in each of the outer sleeves and slidably connected with each of the outer sleeves, the upper end of each of the outer sleeves is fixedly connected with each of the first movable rods through a support block, and the lower end of each of the inner sleeves is fixedly connected with the second movable rod of each of the movable rod groups through a support block.
4. A protective enclosure according to claim 3 wherein a cylinder is provided in each telescopic rod, said cylinder being provided at the inner bottom end of each outer sleeve and located below each inner sleeve.
5. The protective fence of claim 1, further comprising a proximity switch disposed at an upper edge of the first fence unit and/or a lower edge of the second fence unit, wherein the proximity switch is electrically connected to the telescopic assembly via a circuit.
6. The protective fence as claimed in claim 1, wherein the first fence unit comprises a plurality of first sub-fence units, and the plurality of first sub-fence units are sequentially and fixedly connected to form the first fence unit, and wherein the second fence unit comprises a plurality of second sub-fence units, and the plurality of second sub-fence units are sequentially and fixedly connected to form the second fence unit.
7. The protective fence of claim 6, wherein each of the first sub-fence units comprises two first horizontal protective fences and a plurality of first vertical support bars, wherein two ends of each of the first vertical support bars are respectively connected with the two first horizontal protective fences, and the plurality of first vertical support bars are connected with the two first horizontal protective fences at equal intervals.
8. The protective fence of claim 6, wherein each of the second sub-fence units comprises two second horizontal protective fences and a plurality of second vertical support bars, wherein two ends of each of the second vertical support bars are respectively connected with the two second horizontal protective fences, and the plurality of second vertical support bars are connected with the two second horizontal protective fences at equal intervals.
9. The protective fence as claimed in claim 1, further comprising a horizontal touch bar, both ends of which are connected to the left and right ends of the upper fence portion or the lower fence portion, respectively, by a vertical connecting bar, and are positioned at an upper side of an upper end edge portion of the upper fence portion or a lower side of a lower end edge portion of the lower fence portion.
10. A protective fence according to any one of claims 1 to 9 wherein the protective fence is adapted for use in a gray garage comprising a gray garage cross member, and wherein the upper edge portion of the first fence unit of the upper fence assembly is provided with a cross member engagement member which is releasably connected to the gray garage cross member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021160396.3U CN213385916U (en) | 2020-06-19 | 2020-06-19 | Protective fence |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021160396.3U CN213385916U (en) | 2020-06-19 | 2020-06-19 | Protective fence |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213385916U true CN213385916U (en) | 2021-06-08 |
Family
ID=76199469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021160396.3U Expired - Fee Related CN213385916U (en) | 2020-06-19 | 2020-06-19 | Protective fence |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213385916U (en) |
-
2020
- 2020-06-19 CN CN202021160396.3U patent/CN213385916U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210608 |