CN220336619U - Portable foundation ditch protector - Google Patents
Portable foundation ditch protector Download PDFInfo
- Publication number
- CN220336619U CN220336619U CN202321635544.6U CN202321635544U CN220336619U CN 220336619 U CN220336619 U CN 220336619U CN 202321635544 U CN202321635544 U CN 202321635544U CN 220336619 U CN220336619 U CN 220336619U
- Authority
- CN
- China
- Prior art keywords
- base
- protection device
- locking ring
- fixed base
- foundation pit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000001012 protector Effects 0.000 title abstract description 16
- 230000003014 reinforcing effect Effects 0.000 claims description 31
- 238000005096 rolling process Methods 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 24
- 229910052742 iron Inorganic materials 0.000 description 12
- 238000000034 method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 210000002421 cell wall Anatomy 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000003351 stiffener Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The application relates to a movable foundation pit protection device, which comprises a fixed base and a plurality of fixed bases, wherein the bottom wall of each fixed base is abutted with the ground; the protective net is arranged above the fixed base; the fixing piece is used for connecting the protective net and the fixing base; the connecting mechanism is arranged on the fixed base and used for connecting adjacent fixed bases. The application has the effect of improving protector stability.
Description
Technical Field
The application relates to the field of protection devices, in particular to a movable foundation pit protection device.
Background
The foundation pit protection device is a device which is arranged on the periphery of the foundation pit and used for warning workers, pedestrians, drivers and the like to pay attention to safety and preventing the workers from falling into the foundation pit accidentally.
In the related art, referring to fig. 1, a foundation pit protection device, including a plurality of iron horse guardrails 110, insert rings 120 and insert pins 130, a plurality of iron horse guardrails 110 head and tail butt is in order to enclose the foundation pit, install two insert rings 120 on every iron horse guardrails 110, two insert rings 120 are located iron horse guardrails 110's both ends respectively to with iron horse guardrails 110 fixed connection, insert rings 120 of iron horse guardrails 110 one end and insert rings 120 of adjacent iron horse guardrails 110 are arranged in proper order along vertical direction, insert pins 130 pass adjacent two insert rings 120 in proper order, in order to connect adjacent iron horse guardrails 110.
Above-mentioned foundation ditch protector easy dismounting, but the iron horse guardrail is easy to shift or turn on one's side under wind-force and unexpected collision, and protector's stability is poor.
Disclosure of Invention
In order to improve protector's stability, this application provides a portable foundation ditch protector.
The application provides a portable foundation ditch protector adopts following technical scheme:
the movable foundation pit protection device comprises a fixed base and a plurality of fixed bases, wherein the bottom wall of each fixed base is abutted with the ground; the protective net is arranged above the fixed base; the connecting mechanism is arranged on the fixed base and used for connecting adjacent fixed bases.
Through adopting above-mentioned technical scheme, compare in the point contact of iron horse guardrail and ground, unable adjustment base's diapire and ground butt have increased protector and the area of contact on ground, and protector is difficult for shifting or turning on one's side under wind-force and unexpected collision effect, has improved protector's stability. The plurality of unable adjustment bases pass through coupling mechanism and can dismantle the connection, are applicable to different protection scenes, and a plurality of unable adjustment bases pass through coupling mechanism and support each other, have improved protector's stability.
Optionally, the method further comprises: the movable wheel is arranged on the ground in a rolling way when the protection device moves, and the bottom end of the movable wheel is flush with the bottom wall of the fixed base when the protection device is used; a lifting mechanism, comprising: the sliding block is connected with the fixed base in a sliding manner along the vertical direction, and the movable wheel is arranged on the sliding block; the driving assembly is used for vertically moving down the sliding block and is arranged on the fixed base.
Through adopting above-mentioned technical scheme, when needing to remove protector, the drive assembly drive slider moves down vertically, moves the wheel and moves down vertically under the slider drives this moment, moves the bottom and the ground butt of wheel, unable adjustment base and ground separation promote protector, move the wheel rotation, be convenient for remove protector. After the position of the protection device is fixed, the movable wheel is driven by the sliding block to vertically move upwards, and the fixed base is abutted with the ground, so that the stability of the protection device is improved.
Optionally, when the protection device is in use, the movable wheel is accommodated in the fixed base.
Through adopting above-mentioned technical scheme, the movable wheel is acceptd in unable adjustment base, is difficult for the pit to bump damage or damage because of environmental factor.
Optionally, the driving assembly includes: the threaded rod is in threaded connection with the fixed base and is in rotary connection with the sliding block; and the locking piece is fixedly connected with the threaded rod and is matched with the fixed base in a clamping way.
By adopting the technical scheme, the threaded rod is rotated, the threaded rod vertically moves downwards under the guiding action of the fixed base, so that the sliding block is pushed downwards, the sliding block drives the movable wheel to move downwards to support the fixed base until the locking piece is matched with the fixed base in a clamping way, the sliding block is not easy to vertically move upwards, the movable wheel is convenient to roll on the ground, and the stability of the protective device in the moving process is improved; the threaded rod is rotated in the direction opposite to the direction, the locking piece is separated from the fixed base, and the movable wheel drives the sliding block to vertically move upwards along with the threaded rod until the fixed base is abutted to the ground under the action of ground abutment, so that the placement stability of the protection device is improved.
Optionally, the connecting mechanism includes a first locking ring, a second locking ring and a locking piece, the first locking ring is in butt fit with the second locking ring of the adjacent fixing base, and the locking piece sequentially passes through the first locking ring and the second locking ring of the adjacent fixing base to connect the first locking ring and the second locking ring of the adjacent fixing base.
Through adopting above-mentioned technical scheme, the setting of first catch, second catch and locking piece is convenient for fix adjacent unable adjustment base to the size and the shape of protection device are convenient for control.
Optionally, the fixing base is provided with a fixing piece, the fixing piece is detachably connected with the fixing base, and the protection net is detachably connected with the fixing piece.
By adopting the technical scheme, the fixing piece links the protective net and the fixing base, and the protective device moves to a construction site, so that the assembly is convenient; after the use of the protection device is finished, the protection device is convenient to detach.
Optionally, the fixed base is provided with a reinforcing vertical rod, and the protection net is detachably connected with the reinforcing vertical rod.
Through adopting above-mentioned technical scheme, strengthen the montant and stabilize the protection network, reduced the probability that the protection network warp, improved protector structure's stability.
Optionally, the last mounting that articulates of unable adjustment base, install the stiffener between mounting and the enhancement montant, stiffener one end with the mounting can dismantle the connection, the other end with the enhancement montant articulates.
By adopting the technical scheme, the fixing piece is hinged with the fixing base, so that the protection device is convenient to store and assemble; the reinforcing vertical rod and the reinforcing rod position and lock the fixing piece, and in the using process of the protecting device, the fixing piece is not easy to rotate, so that the stability of the structure of the protecting device is improved.
In summary, the present application includes at least one of the following beneficial technical effects:
1. compared with the iron horse guardrail, when the protection device is used, the bottom wall of the fixed base is abutted against the ground, the contact area is increased, the gravity center moves downwards, and the use stability of the protection device is provided;
2. when the protective device is transferred, the movable wheel is driven to move downwards, the fixed base is supported, the protective device is pushed, and the movable wheel rolls on the ground, so that the moving convenience of the protective device is improved;
3. the protection net and the fixing piece are detachably connected with the fixing base, so that the protection net is convenient to store and is used continuously next time, and the cost performance of the protection device is improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a related art;
FIG. 2 is a schematic overall structure of embodiment 1 of the present application;
fig. 3 is a schematic view of a part of the structure of embodiment 1 of the present application, mainly showing a protection unit;
FIG. 4 is a cross-sectional view of a part of the structure of embodiment 1 of the present application, mainly showing the elevating mechanism;
fig. 5 is a schematic view of a part of the structure of embodiment 1 of the present application, mainly showing the lifting mechanism;
fig. 6 is a schematic view of a part of the structure of embodiment 2 of the present application, mainly showing the protection unit.
Reference numerals illustrate:
110. iron horse guard rail; 120. a plug ring; 130. a plug pin; 200. a fixed base; 210. a pass-through hole; 220. a positioning groove; 230. a receiving groove; 231. a slip groove; 240. a relief cavity; 250. a plug hole; 300. a moving wheel; 400. a lifting mechanism; 410. a sliding block; 411. a support block; 420. a connecting rod; 430. a drive assembly; 431. a threaded rod; 432. a rotary handle; 433. a positioning rod; 500. a protective net; 600. a column; 700. a connecting mechanism; 710. a first locking ring; 720. a second locking ring; 730. a locking piece; 800. reinforcing vertical rods; 900. and a reinforcing rod.
Detailed Description
The present application is described in further detail below in conjunction with figures 2-6.
The embodiment of the application discloses a movable foundation pit protection device.
Example 1
Referring to fig. 2 and 3, the mobile foundation pit protection device includes a plurality of protection units connected end to enclose the foundation pit. The protection unit includes a fixing base 200 placed on the ground, a moving wheel 300 for supporting the fixing base 200, a lifting mechanism 400 for driving the moving wheel 300 to move vertically downward, a protection net 500 installed above the fixing base 200, a fixing member for connecting the protection net 500 and the fixing base 200, and a connection mechanism 700 for connecting adjacent fixing bases 200.
The lifting mechanism 400 drives the moving wheel 300 to move vertically downward to support the fixed base 200, pushing the protective unit, and the moving wheel 300 rotates on the ground, thereby facilitating the movement of the protective unit. The protection unit is pushed to a fixed position, the lifting mechanism 400 is released, the movable wheel 300 is accommodated in the fixed base 200, and compared with the situation that the movable wheel 300 is abutted to the ground, the contact area of the fixed base 200 and the ground is large, the gravity center is low, and the stability of the protection unit is improved. The protection units are connected end to end through the connecting structure, so that the stability of the protection device is improved.
Referring to fig. 3 and 4, the fixing base 200 is a rectangular block placed horizontally, a through hole 210 is formed in a top wall of the fixing base 200, a positioning slot 220 is formed below the through hole 210, and the positioning slot 220 is communicated with the through hole 210. The holding groove 230 has been seted up to the below of constant head tank 220, and the holding groove 230 has vertically seted up T-shaped sliding groove 231 respectively on two cell walls along unable adjustment base 200 upper surface length direction both ends, and the holding groove 230 has seted up respectively on two cell walls along unable adjustment base 200 upper surface width direction both sides and has been stepped down the chamber 240, and the chamber 240 of stepping down communicates with unable adjustment base 200 below space.
Referring to fig. 3 and 4, the protection unit is provided with two sets of moving wheels 300 and a lifting mechanism 400, and the two sets of moving wheels 300 and the lifting mechanism 400 are respectively disposed at two ends of the fixed base 200, and one set of moving wheels is described below as an example.
Referring to fig. 4 and 5, the lifting mechanism 400 includes a sliding block 410, a connecting rod 420 and a driving assembly 430, wherein the sliding block 410 is disposed in the receiving groove 230 and slidingly connected with a groove wall of the receiving groove 230 in a vertical direction. Each sliding block 410 is integrally formed with two supporting blocks 411, the two supporting blocks 411 are respectively arranged on two opposite side walls of the sliding block 410, the supporting blocks 411 partially extend into the sliding grooves 231 on the corresponding sides and are in sliding connection with the groove walls of the sliding grooves 231 along the vertical direction, and the bottom walls of the supporting blocks 411 are in abutting connection with the groove walls of the sliding grooves 231 so as to prevent the sliding blocks 410 from being separated from the fixed base 200. The connecting rod 420 is horizontally arranged on the sliding block 410 in a penetrating way, the length direction of the connecting rod 420 is perpendicular to the connecting line of the two blocks 411, and the connecting rod 420 is fixedly connected with the sliding block 410.
Referring to fig. 4 and 5, two moving wheels 300 are provided, two moving wheels 300 are separately provided at both ends of the connection rod 420, and the moving wheels 300 are positioned in the abdication cavities 240 at the corresponding sides, and the moving wheels 300 are coaxially and rotatably connected with the connection rod 420.
In the process of moving the sliding block 410 in the vertical direction, the moving wheel 300 is driven by the connecting rod 420 to move in the vertical direction.
Referring to fig. 4 and 5, the driving assembly 430 includes a threaded rod 431, a knob 432 and a positioning rod 433, wherein the threaded rod 431 is vertically disposed on the top wall of the fixed base 200, and one end of the threaded rod 431 passes through the passing hole 210 and the positioning slot 220, extends into the receiving slot 230, and is rotatably connected to the top wall of the sliding block 410. The other end is fixedly connected with the rotary handle 432 coaxially, and the threaded rod 431 is in threaded transmission connection with the fixed base 200. The length of the locating rod 433 is smaller than that of the passing hole 210, the height of the locating rod 433 is smaller than that of the locating groove 220, the locating rod 433 horizontally penetrates through the upper end of the threaded rod 431, the distance between the lower surface of the locating rod 433 and the upper groove wall of the locating groove 220 is larger than that between the lower surface of the supporting block 411 and the lower groove wall of the sliding groove 231, and the bottom wall of the locating rod 433 is provided with chamfer angles.
Rotating the knob 432, the threaded rod 431 drives the positioning rod 433 to move downwards, the sliding block 410 vertically moves downwards under the abutting of the threaded rod 431, and at the moment, the rotating wheel vertically moves downwards under the transmission action of the connecting rod 420, so that part of the rotating wheel extends out of the abdication cavity 240; continuing to rotate the knob 432, the positioning rod 433 rotates along with the threaded rod 431, passes through the passing hole 210 and enters the positioning groove 220, and the top wall of the positioning rod 433 abuts against the groove wall of the positioning groove 220, so that the protection unit is pushed, and the moving wheel 300 rotates on the ground. After the protection unit is pushed to the specified position, the knob 432 is rotated in the direction opposite to the rotation direction, the positioning rod 433 is moved out of the positioning groove 220 through the passing hole 210, the knob 432 is continuously rotated, and the moving wheel 300 pushes the connecting rod 420 and the sliding block 410 to vertically move upwards along with the threaded rod 431 under the action of the ground abutting force until the fixed base 200 abuts against the ground.
Referring to fig. 3, the connection mechanism 700 includes a first locking ring 710, a second locking ring 720 and a locking member 730, the first locking ring 710 and the second locking ring 720 are respectively disposed at two ends of the fixing base 200, a vertical distance between the second locking ring 720 and an upper surface of the fixing base 200 is equal to a vertical distance between a lower surface of the first locking ring 710 and an upper surface of the fixing base 200, the first locking ring 710 and the second locking ring 720 are respectively fixedly connected with end walls of the fixing base 200 at corresponding sides, and through holes are vertically formed in the first locking ring 710 and the second locking ring 720. In this embodiment, the locking member 730 has a bolt structure, the small end of the locking member 730 sequentially passes through the through-hole of the first locking ring 710 and the through-hole of the second locking ring 720 of the adjacent protection unit, and the bottom wall of the large end of the locking member 730 abuts against the top wall of the first locking ring 710 to connect the adjacent protection units.
Referring to fig. 3, the fixing members are provided in two, in this embodiment, two columns 600, and the two columns 600 are respectively provided at two ends of the fixing base 200, and the columns 600 are located between the two threaded rods 431. The bottom end of the column 600 is inserted and engaged with the top wall of the fixing base 200, and in other embodiments, the column 600 is connected with the fixing base 200 by bolts. The protection net 500 is located between two columns 600, one end of the protection net 500 is fixed to one column 600 by bolts, and the other end is fixed to the other column 600 by bolts.
The implementation principle of embodiment 1 of the present application is:
the stand columns 600 are fixed to the fixing base 200, and the protection net 500 is fixed to the two stand columns 600 by bolts. The knob 432 is rotated until the top wall of the positioning rod 433 abuts against the groove wall of the positioning groove 220, at which time the moving wheel 300 partially protrudes out of the abdication cavity 240 to support the fixed base 200. The guard units are pushed to a prescribed position, and the first locking ring 710 of one guard unit abuts against the second locking ring 720 of the other guard unit, securing the adjacent two guard units by the lock 730. The plurality of protection units are connected end to end in sequence to form the foundation pit protection device. Rotating the knob 432, the positioning rod 433 is separated from the positioning groove 220 through the passing hole 210, and the knob 432 is continuously rotated until the fixed base 200 is grounded, and the plurality of protection units sequentially complete the steps, so that the installation of the protection device is completed.
Example 2
Referring to fig. 6, this embodiment differs from embodiment 1 in that: the bottom ends of the upright posts 600 are hinged with the top wall of the fixed base 200, two plug holes 250 are formed in the bottom wall of the fixed base 200, and the plug holes 250 are located between the two upright posts 600. The protection device further comprises two reinforcing vertical rods 800 and four reinforcing rods 900, wherein the two reinforcing vertical rods 800 are respectively arranged at the two inserting holes 250, and the bottom ends of the reinforcing vertical rods 800 are in inserting fit with the inserting holes 250. The top ends of the reinforcing vertical bars 800 and the top ends of the protection net 500 are fixed by bolts and nuts. In other embodiments, the reinforcing rods 800 are tied to the protection net 500. Two reinforcing rods 900 are installed on each reinforcing vertical rod 800, one end of each reinforcing rod 900 is hinged with the top end of each reinforcing vertical rod 800, and the other end of each reinforcing rod 900 is fixed with the bottom end of the corresponding end upright post 600 through bolts. One end of the other reinforcing rod 900 is hinged to the bottom end of the reinforcing vertical rod 800, and the other end of the other reinforcing rod is fixed to the top end of the corresponding end upright post 600 through bolts.
The implementation principle of embodiment 2 of the present application is:
the column 600 is rotated to be vertical, the reinforcing vertical bar 800 is inserted and fixed on the fixing base 200, the reinforcing bar 900 is rotated, and the free end of the reinforcing bar 900 is fixed on the column 600 at the corresponding end by bolts. The protection net 500 is fixed to the two columns 600, and the protection net 500 and the reinforcing vertical bars 800 are connected. The guard units are pushed to a prescribed position, the first locking ring 710 of one guard unit abuts against the second locking ring 720 of the other guard unit, and the adjacent two guard units are fixed by the lock 730. The plurality of protection units are connected end to end in sequence to form the foundation pit protection device. Rotating the knob 432, the positioning rod 433 is separated from the positioning groove 220 through the passing hole 210, and the knob 432 is continuously rotated until the fixed base 200 is grounded, and the plurality of protection units sequentially complete the steps, so that the installation of the protection device is completed.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (8)
1. A mobile foundation pit protection device, comprising:
a plurality of fixed bases (200), wherein the bottom wall of the fixed base (200) is abutted with the ground;
a protection net (500), wherein each fixing base (200) is provided with one protection net (500);
and the connecting mechanism (700) is arranged on the fixed base (200) and is used for connecting the adjacent fixed bases (200).
2. The mobile foundation pit protection device of claim 1, further comprising:
a moving wheel (300) which is arranged on the ground in a rolling way;
lifting mechanism (400), comprising:
the sliding block (410) is connected with the fixed base (200) in a sliding manner along the vertical direction, and the moving wheel (300) is rotatably arranged on the sliding block (410);
and the driving assembly (430) is arranged on the fixed base (200) and is used for driving the sliding block (410) to vertically move downwards.
3. A mobile foundation pit protection device according to claim 2, wherein the mobile wheel (300) is housed in the stationary base (200) when the protection device is in use.
4. The mobile foundation pit protection device of claim 2, wherein said drive assembly (430) comprises:
the threaded rod (431) is in threaded connection with the fixed base (200) and is in rotary connection with the sliding block (410);
the locking piece is fixedly connected with the threaded rod (431) and is matched with the fixed base (200) in a clamping mode.
5. The mobile foundation pit protection device of claim 1, wherein the connection mechanism (700) comprises a first locking ring (710), a second locking ring (720) and a locking member (730), wherein the first locking ring (710) is in abutting engagement with the second locking ring (720) of the adjacent stationary base (200), and the locking member (730) sequentially passes through the first locking ring (710) and the second locking ring (720) of the adjacent stationary base (200) to connect the first locking ring (710) and the second locking ring (720) of the adjacent stationary base (200).
6. The mobile foundation pit protection device according to claim 1, wherein a fixing member is mounted on the fixing base (200), the fixing member is detachably connected with the fixing base (200), and the protection net (500) is detachably connected with the fixing member.
7. The movable foundation pit protection device according to claim 1, wherein the fixed base (200) is provided with a reinforcing vertical rod (800), and the protection net (500) is detachably connected with the reinforcing vertical rod (800).
8. The movable foundation pit protection device according to claim 7, wherein a fixing member is hinged on the fixing base (200), a reinforcing rod (900) is installed between the fixing member and the reinforcing vertical rod (800), one end of the reinforcing rod (900) is detachably connected with the fixing member, and the other end of the reinforcing rod is hinged with the reinforcing vertical rod (800).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202321635544.6U CN220336619U (en) | 2023-06-26 | 2023-06-26 | Portable foundation ditch protector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202321635544.6U CN220336619U (en) | 2023-06-26 | 2023-06-26 | Portable foundation ditch protector |
Publications (1)
Publication Number | Publication Date |
---|---|
CN220336619U true CN220336619U (en) | 2024-01-12 |
Family
ID=89450713
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202321635544.6U Active CN220336619U (en) | 2023-06-26 | 2023-06-26 | Portable foundation ditch protector |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN220336619U (en) |
-
2023
- 2023-06-26 CN CN202321635544.6U patent/CN220336619U/en active Active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN220336619U (en) | Portable foundation ditch protector | |
CN116248023A (en) | Solar photovoltaic system installation structure and installation method | |
CN213683502U (en) | High strength concrete assembled gardens building structure | |
CN212154389U (en) | Portable strutting arrangement of foundation ditch rail guard | |
CN212176785U (en) | Foundation pit safety protection device | |
CN216665227U (en) | Guardrail is used in municipal administration road bridge construction of easy assembly | |
CN113322864A (en) | Isolating device of quick installation | |
CN214062283U (en) | Building platform structure for house construction | |
CN219733021U (en) | Protective bracket structure of municipal safety guard rail | |
CN216272888U (en) | Operating platform for installation of fire-fighting engineering | |
CN216617119U (en) | Foundation ditch guardrail for construction that security performance is high | |
CN220167675U (en) | Fast-assembling type guard rail | |
CN221856422U (en) | Foundation pit safety protection device for highway engineering | |
CN220099698U (en) | Cross-transmission belt culvert template supporting structure | |
CN219344287U (en) | Safety protection fence for power engineering construction | |
CN115387627B (en) | Can have enough to meet need bolt formula foundation ditch limb protection device | |
CN216336323U (en) | Steel wire rope protection device | |
CN221896369U (en) | Geotechnical engineering foundation ditch protector | |
CN221502924U (en) | Safety barrier based on campus safety | |
CN221742266U (en) | Protective fence for construction site | |
CN216615621U (en) | Road construction guardrail | |
CN219509375U (en) | Building site faces early warning mechanism that limit was protected | |
CN113374342B (en) | Rope-driven quick disassembling tool for protective guard | |
CN216665233U (en) | Construction road rail guard | |
CN219931837U (en) | Foundation pit excavation supporting structure |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |