CN117967128B - PVC guardrail device capable of automatically adjusting height - Google Patents
PVC guardrail device capable of automatically adjusting height Download PDFInfo
- Publication number
- CN117967128B CN117967128B CN202410366296.2A CN202410366296A CN117967128B CN 117967128 B CN117967128 B CN 117967128B CN 202410366296 A CN202410366296 A CN 202410366296A CN 117967128 B CN117967128 B CN 117967128B
- Authority
- CN
- China
- Prior art keywords
- driving
- vertical
- rod
- driving mechanism
- blocks
- 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
- 230000007246 mechanism Effects 0.000 claims abstract description 41
- 230000002457 bidirectional effect Effects 0.000 claims description 15
- 230000004888 barrier function Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 11
- 230000009471 action Effects 0.000 description 3
- 239000004566 building material Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The invention discloses a PVC guardrail device capable of automatically adjusting the height, which belongs to the technical field of PVC guardrails and comprises two upright posts, wherein two groups of vertical rails are arranged between the two upright posts, and an upper cross rod and a lower cross rod are movably arranged between the two groups of vertical rails; the device also comprises a first driving mechanism and a second driving mechanism, wherein the first driving mechanism and the second driving mechanism are positioned at two sides of the vertical railing and used for driving the vertical railing to move; the vertical rail comprises a driving vertical rod and two driven vertical rods, the driving vertical rod and the driven vertical rods are of U-shaped structures, two limiting blocks are arranged on the inner walls of the two sides of the driving vertical rod and the driven vertical rod, and limiting grooves are formed in the two side walls of the upper cross rod and the lower cross rod; according to the invention, the heights of the upper cross rod and the lower cross rod are adjusted by changing the positions of the vertical pull rods, so that a temporary inlet and outlet is formed when materials are transported, the transportation of the materials by workers is facilitated, and the construction efficiency is improved.
Description
Technical Field
The invention relates to the technical field of PVC guardrails, in particular to a PVC guardrail device capable of automatically adjusting the height.
Background
PVC is abbreviated as PVC, is one of plastic materials, is mainly used in various fields because PVC plastic has good toughness, and PVC guardrails are mainly used in some fields such as roadblocks, roadside fences or civil engineering construction, and the PVC guardrail has the advantages of good steel plasticity, high strength, corrosion resistance and the like and is widely used.
However, the conventional guardrails have some problems: the existing construction guardrails are fixed in height and are customized according to the requirements of civil construction, and the construction guardrails play a role in protection, but in the construction process, if building materials need to be transported in and out, the building materials can only be transported from a fixed inlet and outlet, and sometimes the building materials need to be wound around a large circle on a construction site, so that certain limitation is caused during use, and the construction efficiency is affected.
Disclosure of Invention
The invention aims to provide a PVC guardrail device capable of automatically adjusting the height, which solves the following technical problems: traditional guardrail simple structure, high fixed has the limitation in the use, influences the efficiency of construction.
The aim of the invention can be achieved by the following technical scheme:
The PVC guardrail device capable of automatically adjusting the height comprises two upright posts, wherein two groups of vertical rails are arranged between the two upright posts, and an upper cross rod and a lower cross rod are movably arranged between the two groups of vertical rails;
The device also comprises a first driving mechanism and a second driving mechanism, wherein the first driving mechanism and the second driving mechanism are positioned at two sides of the vertical railing and used for driving the vertical railing to move;
The vertical railing comprises a driving vertical rod and two driven vertical rods, the driving vertical rod and the driven vertical rods are of U-shaped structures, two limiting blocks are arranged on the inner walls of the two sides of the driving vertical rod and the driven vertical rod, limiting grooves are formed in the two side walls of the upper cross rod and the lower cross rod, the limiting blocks on the driving vertical rod and the driven vertical rod are slidably connected in the limiting grooves of the upper cross rod and the lower cross rod, and channels are formed in the two sides of the limiting grooves.
As a further scheme of the invention: the first actuating mechanism and the second actuating mechanism all include the drive box, rotate on the one side inner wall of drive box and install bi-directional lead screw, install driving motor on the opposite side inner wall, driving motor's output shaft and bi-directional lead screw connection, equal threaded connection has the screw piece on two sections screw threads of bi-directional lead screw, all the cover is equipped with two movable blocks on two sections screw threads of bi-directional lead screw, one side of screw piece is fixed with the head rod, two one side of movable block all is fixed with the second connecting rod, one side that the drive box is close to perpendicular railing is provided with the opening, the one end through opening and the initiative montant fixed connection of head rod, the one end through opening and the driven montant fixed connection of second connecting rod.
As a further scheme of the invention: the bottom wall of the driving box is provided with a track along the length direction, a plurality of sliding blocks are connected in the track in a sliding manner, and the sliding blocks are respectively fixedly connected with the nut block and the moving block.
As a further scheme of the invention: a pull rope is connected between the two moving blocks positioned on the same side, and a pull rope is also connected between the moving blocks positioned on the same side and the nut block.
As a further scheme of the invention: two the side that initiative montant is close to all is provided with the diaphragm, the diaphragm moves and can freely reciprocate along with initiative montant, the riser is installed in one side rotation of diaphragm.
As a further scheme of the invention: two the lateral wall tops that initiative montant is close to all set up the fixed block, set up the dovetail groove on the fixed block, two the diaphragm is kept away from mutually one side all is fixed with the trapezoid block, trapezoid block and dovetail groove sliding connection.
As a further scheme of the invention: one side of the second driving mechanism is provided with a slope.
The invention has the beneficial effects that:
(1) According to the invention, the vertical railing is divided into the driving vertical rod and the driven vertical rod by arranging the vertical railing, the upper cross rod, the lower cross rod, the first driving mechanism, the second driving mechanism and the like, when materials need to be transported, the two groups of vertical pull rods move, the upper cross rod and the lower cross rod can automatically fall down, the height of the guardrail is reduced, an inlet and an outlet are formed, the transportation of the materials by workers is convenient, and the construction efficiency is improved;
(2) According to the invention, the first driving mechanism and the second driving mechanism are arranged to drive the two groups of vertical rails to move, so that the height of the guardrail is automatically reduced, and the operation is simple and quick;
(3) According to the invention, the transverse plate and the vertical plate are arranged, warning slogans can be posted on the vertical plate to remind passers-by to keep away, and after the height of the upper transverse rod is reduced, the transverse plate falls onto the driving box, and the vertical plate is inclined, so that the pushing and the entering of construction staff are facilitated.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic view of a first embodiment of the present invention;
FIG. 2 is a schematic view of the structure of the driving vertical rod of the present invention;
FIG. 3 is a schematic view of the structure of the upper rail of the present invention;
FIG. 4 is a schematic view of the first drive mechanism and vertical rail of the present invention;
FIG. 5 is a schematic view of the structure of the drive housing of the present invention;
FIG. 6 is a schematic view of the structure of the bi-directional screw and track of the present invention;
FIG. 7 is a schematic diagram of a second embodiment of the present invention;
FIG. 8 is a schematic view of the structure of the active vertical and horizontal bars of the present invention;
Fig. 9 is a schematic view of the structure of the ramp of the present invention.
In the figure: 1. a column; 2. vertical railing; 201. an active vertical rod; 202. a driven vertical rod; 203. a limiting block; 3. an upper cross bar; 301. a limit groove; 302. a channel; 4. a lower cross bar; 5. a first driving mechanism; 501. a drive box; 502. an opening; 503. a bidirectional screw rod; 504. a track; 505. a nut block; 506. a first connecting rod; 507. a moving block; 508. a second connecting rod; 509. a slide block; 510. a pull rope; 6. a second driving mechanism; 7. a cross plate; 8. a riser; 9. a ramp; 10. a fixed block; 11. a trapezoid groove; 12. trapezoidal blocks.
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.
Examples
Referring to fig. 1-4, the invention discloses a PVC guardrail device capable of automatically adjusting height, comprising two upright posts 1, two sets of vertical rails 2 arranged between the two upright posts 1, and an upper cross bar 3 and a lower cross bar 4 movably arranged between the two sets of vertical rails 2; the device also comprises a first driving mechanism 5 and a second driving mechanism 6, wherein the first driving mechanism 5 and the second driving mechanism 6 are positioned at two sides of the vertical railing 2 and used for driving the vertical railing 2 to move; the vertical rail 2 comprises a driving vertical rod 201 and two driven vertical rods 202, wherein the driving vertical rod 201 and the driven vertical rods 202 are of U-shaped structures, two limiting blocks 203 are arranged on the inner walls of the two sides of the driving vertical rod 201 and the driven vertical rod 202, limiting grooves 301 are formed in the two side walls of the upper cross rod 3 and the lower cross rod 4, the limiting blocks 203 on the driving vertical rod 201 and the driven vertical rod 202 are connected in the limiting grooves 301 of the upper cross rod 3 and the lower cross rod 4 in a sliding mode, and channels 302 are formed in the two sides of the limiting grooves 301; when the transportation materials need to go in and out, the first driving mechanism 5 and the second driving mechanism 6 are utilized to drive the two groups of vertical rails 2 to move, taking fig. 1 as an example, the left vertical rail 2 moves leftwards, the right vertical rail 2 moves rightwards, the driving vertical rod 201 can push the driven vertical rod 202 to move, when the driving vertical rod 201 and the two driven vertical rods 202 move to the channel 302, the limiting block 203 can be separated from the limiting groove 301, at the moment, the upper cross rod 3 and the lower cross rod 4 can automatically fall on the ground under the action of gravity, an inlet and an outlet are formed in the middle of the guardrails, and the transportation materials of workers can be conveniently carried in and out.
Referring to fig. 4-6, the first driving mechanism 5 and the second driving mechanism 6 both comprise a driving box 501, a bidirectional screw rod 503 is rotatably installed on the inner wall of one side of the driving box 501, a driving motor is installed on the inner wall of the other side of the driving box 501, an output shaft of the driving motor is connected with the bidirectional screw rod 503, two sections of threads of the bidirectional screw rod 503 are respectively connected with a nut block 505 in a threaded manner, two moving blocks 507 are respectively sleeved on the two sections of threads of the bidirectional screw rod 503, a first connecting rod 506 is fixed on one side of the nut block 505, a second connecting rod 508 is respectively fixed on one side of the two moving blocks 507, an opening 502 is formed on one side, close to the vertical rail 2, of the driving box 501, one end penetrating opening 502 of the first connecting rod 506 is fixedly connected with the driving vertical rod 201, and one end penetrating opening 502 of the second connecting rod 508 is fixedly connected with the driven vertical rod 202; a rail 504 is mounted on the bottom wall of the driving box 501 along the length direction, a plurality of sliding blocks 509 are connected in a sliding manner in the rail 504, and the sliding blocks 509 are fixedly connected with the nut block 505 and the moving block 507 respectively; simultaneously, the driving motors of the first driving mechanism 5 and the second driving mechanism 6 are started, the driving motors drive the bidirectional screw rods 503 to rotate, two nut blocks 505 on the bidirectional screw rods 503 are mutually far away, so that the first connecting rod 506 drives the two driving vertical rods 201 to be mutually far away, the driving vertical rods 201 are mutually far away, the driven vertical rods 202 are pushed to move, when the driving vertical rods 201 and the two driven vertical rods 202 move to the channel 302, the limiting blocks 203 are separated from the limiting grooves 301, and at the moment, the upper cross rod 3 and the lower cross rod 4 automatically fall on the ground under the action of gravity.
Referring to fig. 6, a pull rope 510 is connected between two moving blocks 507 located on the same side, a pull rope 510 is also connected between a moving block 507 located on the same side and a nut block 505, through setting the pull rope 510, when the guardrail needs to be restored to original shape after material transportation is completed, an operator lifts the upper cross rod 3 and the lower cross rod 4, then a driving motor drives a bidirectional screw 503 to rotate reversely, so that the two nut blocks 505 are close to each other, a driving vertical rod 201 is gradually reset, meanwhile, a driven vertical rod 202 is pulled to be gradually reset through the pull rope 510, when the driving vertical rod 201 is completely reset, the driving motor is closed, and the pull rope 510 can also avoid the movement of the driven vertical rod 202.
Examples
On the basis of the first embodiment, in order to make the guardrail have a better warning effect, in the embodiment, referring to fig. 7-8, a transverse plate 7 is arranged on one side of two driving vertical rods 201, which is close to each other, the transverse plate 7 moves along with the driving vertical rods 201 and can move up and down freely, and a vertical plate 8 is rotatably arranged on one side of the transverse plate 7; the tops of the side walls of the two driving vertical rods 201, which are close to each other, are provided with fixed blocks 10, the fixed blocks 10 are provided with trapezoid grooves 11, the sides of the two transverse plates 7, which are far away from each other, are respectively fixed with a trapezoid block 12, and the trapezoid blocks 12 are in sliding connection with the trapezoid grooves 11; warning banners can be posted on the risers 8 to remind pedestrians, and when the upper cross rod 3 descends, the cross plates 7 can fall on the two driving boxes 501, so that the risers 8 incline, and operators can conveniently feed along the risers 8 trolley.
Referring to fig. 9, a slope 9 is provided at one side of the second driving mechanism 6, and the slope 9 is designed at the inner side of the guard rail, which is also convenient for entering and exiting.
The working principle of the invention is as follows: when materials to be transported are moved in and out, the driving motors of the first driving mechanism 5 and the second driving mechanism 6 are started at the same time, the driving motors drive the bidirectional screw rods 503 to rotate, two nut blocks 505 on the bidirectional screw rods 503 are mutually far away, so that two driving vertical rods 201 are driven to be mutually far away through a first connecting rod 506, the driven vertical rods 202 are pushed to move after the driving vertical rods 201 are mutually far away, when the driving vertical rods 201 and the two driven vertical rods 202 move to a channel 302, the limiting blocks 203 are separated from the limiting grooves 301, at the moment, the upper cross rod 3 and the lower cross rod 4 automatically fall on the ground under the action of gravity, an inlet and an outlet are formed in the middle of a guardrail, the transportation materials to be transported by workers are facilitated, warning slogans can be posted on the vertical plates 8, the pedestrians are reminded, and when the upper cross rod 3 descends, the transverse plates 7 fall on the two driving boxes 501, the vertical plates 8 are inclined, and the operators are facilitated to feed along the vertical plates 8 in a pushing way;
When the material is transported and needs to be reset, the upper cross rod 3 and the lower cross rod 4 are lifted firstly, the trapezoid blocks 12 on the cross plate 7 are inserted into the trapezoid grooves 11, then the driving motor is started again to enable the bidirectional screw rod 503 to rotate reversely, the two screw blocks 505 are close to each other, the driving vertical rod 201 is reset gradually, meanwhile, the driven vertical rod 202 is pulled to reset gradually through the pull rope 510, the driving motor is closed after the driving vertical rod 201 is reset completely, the pull rope 510 is in a straight state, and in addition, the pull rope 510 can prevent the driven vertical rod 202 from moving.
The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.
Claims (4)
1. The PVC guardrail device capable of automatically adjusting the height comprises two upright posts (1) and is characterized in that two groups of vertical rails (2) are arranged between the two upright posts (1), and an upper cross rod (3) and a lower cross rod (4) are movably arranged between the two groups of vertical rails (2);
The device further comprises a first driving mechanism (5) and a second driving mechanism (6), wherein the first driving mechanism (5) and the second driving mechanism (6) are positioned at two sides of the vertical railing (2) and used for driving the vertical railing (2) to move;
the vertical railing (2) comprises a driving vertical rod (201) and two driven vertical rods (202), the driving vertical rod (201) and the driven vertical rods (202) are of U-shaped structures, two limiting blocks (203) are arranged on the inner walls of two sides of the driving vertical rod (201) and the driven vertical rod (202), limiting grooves (301) are formed in the two side walls of the upper cross rod (3) and the lower cross rod (4), and the limiting blocks (203) on the driving vertical rod (201) and the driven vertical rod (202) are slidably connected in the limiting grooves (301) of the upper cross rod (3) and the lower cross rod (4), and channels (302) are formed in two sides of the limiting grooves (301);
The driving mechanism comprises a first driving mechanism (5) and a second driving mechanism (6), wherein the first driving mechanism and the second driving mechanism respectively comprise a driving box (501), a bidirectional screw rod (503) is rotatably arranged on the inner wall of one side of the driving box (501), a driving motor is arranged on the inner wall of the other side of the driving box, an output shaft of the driving motor is connected with the bidirectional screw rod (503), screw blocks (505) are respectively connected to two sections of threads of the bidirectional screw rod (503), two moving blocks (507) are respectively sleeved on two sections of threads of the bidirectional screw rod (503), a first connecting rod (506) is fixed on one side of each screw block (505), a second connecting rod (508) is respectively fixed on one side of each moving block (507), an opening (502) is formed in one side, close to a vertical rail (2), one end of each first connecting rod (506) penetrates through the opening (502) to be fixedly connected with a driving vertical rod (201), and one end of each second connecting rod (508) penetrates through the opening (502) to be fixedly connected with a driven vertical rod (202).
A rail (504) is arranged on the bottom wall of the driving box (501) along the length direction, a plurality of sliding blocks (509) are connected in a sliding manner in the rail (504), and the sliding blocks (509) are fixedly connected with the nut blocks (505) and the moving blocks (507) respectively;
a pull rope (510) is connected between the two moving blocks (507) positioned on the same side, and a pull rope (510) is also connected between the moving blocks (507) and the nut blocks (505) positioned on the same side.
2. The PVC guard rail device of claim 1, wherein two of the driving posts (201) are provided with a cross plate (7) on each side thereof adjacent to each other, the cross plate (7) moving with the driving posts (201) and being free to move up and down, and a riser (8) is rotatably mounted on one side of the cross plate (7).
3. The PVC guard rail device with automatically adjustable height according to claim 2, wherein two side wall tops of the driving vertical rods (201) close to each other are provided with a fixing block (10), the fixing block (10) is provided with a trapezoid groove (11), one side of the two transverse plates (7) far away from each other is fixed with a trapezoid block (12), and the trapezoid blocks (12) are slidably connected with the trapezoid groove (11).
4. A PVC barrier device with automatic height adjustment according to claim 2, wherein one side of the second drive mechanism (6) is provided with a ramp (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410366296.2A CN117967128B (en) | 2024-03-28 | 2024-03-28 | PVC guardrail device capable of automatically adjusting height |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410366296.2A CN117967128B (en) | 2024-03-28 | 2024-03-28 | PVC guardrail device capable of automatically adjusting height |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117967128A CN117967128A (en) | 2024-05-03 |
| CN117967128B true CN117967128B (en) | 2024-05-28 |
Family
ID=90849996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410366296.2A Active CN117967128B (en) | 2024-03-28 | 2024-03-28 | PVC guardrail device capable of automatically adjusting height |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117967128B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004300785A (en) * | 2003-03-31 | 2004-10-28 | Shin Nikkei Co Ltd | Synthetic resin made fence |
| KR20100050004A (en) * | 2008-11-04 | 2010-05-13 | (주)종합건축사사무소광일건축 | Wall structure of an apartment's house |
| KR101536956B1 (en) * | 2015-02-13 | 2015-07-16 | (주)플랜에이건축사사무소 | Height adjustable balustrade for apartment house |
| CN205501895U (en) * | 2016-03-28 | 2016-08-24 | 常州市瑞嘉金属制品有限公司 | Corrosion resistant magnetic suspension guardrail |
| CN209227443U (en) * | 2018-11-01 | 2019-08-09 | 河南一韵汇安实业有限公司 | Automatic-lifting type isolation guardrail |
| KR102104778B1 (en) * | 2019-06-10 | 2020-04-27 | 이동진 | Multi purpose guiderail type water flow blocking apparatus |
| CN213573364U (en) * | 2020-10-21 | 2021-06-29 | 中绚建设股份有限公司 | Guardrail device with lamp convenient to install |
| CN214365377U (en) * | 2020-12-04 | 2021-10-08 | 黄政升 | Height-adjustable's municipal administration guardrail |
| CN214424198U (en) * | 2020-12-12 | 2021-10-19 | 昆明理工大学 | Building safety device |
| CN214463221U (en) * | 2020-11-25 | 2021-10-22 | 上海程识市政交通工程有限公司 | Municipal administration building rail |
| KR20230123813A (en) * | 2022-02-17 | 2023-08-24 | 충남대학교산학협력단 | Handrail apparatus for automatic height adjustment |
| DE202023103034U1 (en) * | 2023-03-07 | 2023-12-06 | Huaneng Yangjiang Wind Power Co., LTD | Railing mounting mechanism and solar wind power railing |
-
2024
- 2024-03-28 CN CN202410366296.2A patent/CN117967128B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004300785A (en) * | 2003-03-31 | 2004-10-28 | Shin Nikkei Co Ltd | Synthetic resin made fence |
| KR20100050004A (en) * | 2008-11-04 | 2010-05-13 | (주)종합건축사사무소광일건축 | Wall structure of an apartment's house |
| KR101536956B1 (en) * | 2015-02-13 | 2015-07-16 | (주)플랜에이건축사사무소 | Height adjustable balustrade for apartment house |
| CN205501895U (en) * | 2016-03-28 | 2016-08-24 | 常州市瑞嘉金属制品有限公司 | Corrosion resistant magnetic suspension guardrail |
| CN209227443U (en) * | 2018-11-01 | 2019-08-09 | 河南一韵汇安实业有限公司 | Automatic-lifting type isolation guardrail |
| KR102104778B1 (en) * | 2019-06-10 | 2020-04-27 | 이동진 | Multi purpose guiderail type water flow blocking apparatus |
| CN213573364U (en) * | 2020-10-21 | 2021-06-29 | 中绚建设股份有限公司 | Guardrail device with lamp convenient to install |
| CN214463221U (en) * | 2020-11-25 | 2021-10-22 | 上海程识市政交通工程有限公司 | Municipal administration building rail |
| CN214365377U (en) * | 2020-12-04 | 2021-10-08 | 黄政升 | Height-adjustable's municipal administration guardrail |
| CN214424198U (en) * | 2020-12-12 | 2021-10-19 | 昆明理工大学 | Building safety device |
| KR20230123813A (en) * | 2022-02-17 | 2023-08-24 | 충남대학교산학협력단 | Handrail apparatus for automatic height adjustment |
| DE202023103034U1 (en) * | 2023-03-07 | 2023-12-06 | Huaneng Yangjiang Wind Power Co., LTD | Railing mounting mechanism and solar wind power railing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117967128A (en) | 2024-05-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN117967128B (en) | PVC guardrail device capable of automatically adjusting height | |
| CN110670928B (en) | Small-size double-deck parking equipment is dodged to side position nothing | |
| CN210508131U (en) | Wall type guardrail handrail | |
| CN209669762U (en) | A kind of moveable traffic guardrail | |
| CN110029820A (en) | A kind of concreting workbench | |
| CN212430248U (en) | Monitoring rod convenient to maintain | |
| CN212715875U (en) | Adjustable guardrail based on door type scaffold | |
| CN210561847U (en) | Renewable asphalt bridge highway is with adjustable limit for width limit for height device | |
| CN114671317B (en) | Elevator device attached to tower crane | |
| CN219061172U (en) | Foldable telescopic safety guard rail for pipe network construction | |
| CN213597653U (en) | A construction rail guard for building transformation | |
| CN218934018U (en) | Safety guard rail for building installation engineering | |
| CN219691539U (en) | Trolley for tunnel section water conservancy and hydropower construction | |
| CN219710152U (en) | Portable movable type mancar split railing | |
| CN216663933U (en) | Town road safety barrier | |
| CN219281448U (en) | Protective guard for urban construction | |
| CN221002248U (en) | Construction fence | |
| CN113123276B (en) | Rail guard for municipal works | |
| CN220013484U (en) | Anti-rotation positioning device for lifting column | |
| CN217106446U (en) | Safety device is used in highway engineering construction | |
| CN110077488B (en) | Highway engineering guardrail transfer robot | |
| CN213710293U (en) | Construction platform with safety protection function for building construction | |
| DE10004250A1 (en) | Center lane changeover system has pressure generating equipment, drives and barrier controls mounted inside barriers forming rows of guide barriers with vertically deployable rollers | |
| CN220789547U (en) | Anti-collision protective guard mounting structure | |
| CN219315500U (en) | Bridge rail guard |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |