CN106948655A - Engineering fence - Google Patents
Engineering fence Download PDFInfo
- Publication number
- CN106948655A CN106948655A CN201710179324.XA CN201710179324A CN106948655A CN 106948655 A CN106948655 A CN 106948655A CN 201710179324 A CN201710179324 A CN 201710179324A CN 106948655 A CN106948655 A CN 106948655A
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- CN
- China
- Prior art keywords
- column
- engineering fence
- chute
- position limited
- protective plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H17/00—Fencing, e.g. fences, enclosures, corrals
- E04H17/14—Fences constructed of rigid elements, e.g. with additional wire fillings or with posts
- E04H17/16—Fences constructed of rigid elements, e.g. with additional wire fillings or with posts using prefabricated panel-like elements, e.g. wired frames
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Fencing (AREA)
Abstract
The invention discloses a kind of engineering fence, its drip irrigation device is to include hollow pillar stand, protective plate and clamping device, the top and bottom of column offer chute, clamping device includes the upper neck being connected with the sliding of column upper end chute and Open Side Down, with column lower end chute slide be connected and opening upwards lower bayonet slot, it is vertically arranged at the upper rack of column inner upper end, it is vertically arranged at the lower tooth bar of column interior lower end, the travelling gear of upper rack and lower tooth bar is engaged simultaneously, one end penetrates column and is connected to the rotating shaft of travelling gear, it is arranged at the position limited gear that rotating shaft passes one end outside column, the actuator rotated for drive shaft and the limit assembly for limiting position limited gear rotation.The present invention solves existing engineering fence and uses unsafe problem.
Description
Technical field
The present invention relates to construction protection equipment, more particularly to a kind of engineering fence.
Background technology
When building building, first have to excavate room and build foundation ditch, room build excavation of foundation pit it is good after in order to prevent that pedestrian and vehicle from falling
Enter, build to enclose around foundation ditch in room and set engineering fence.
Existing engineering fence is mainly made up of column and color steel, and first column, which is intervally arranged, during installation build foundation ditch in room
Around, then one piece of color steel be set between each two column, and the lower end of column enters ground or to pass through expansion by buried
It is bolted on ground, the both sides of color steel penetrate simultaneously colligation to corresponding column by steel wire, final all color steels
Room is built into foundation ditch as dependence basis using column to enclose.
Existing engineering fence installs more convenient, but there is also an issue in actual use, and color steel is to pass through
Steel wire lashing is on column, and staff is during color steel is installed often because carelessness make it that the end of steel wire is stretched
Go out color steel excessive, ultimately result in the easy hanging breaking clothes of passer-by.
The content of the invention
It is an object of the invention to provide a kind of engineering fence, it has the characteristics of using safer.
The present invention above-mentioned purpose technical scheme is that：Including the hollow pillar stand that is intervally arranged with
And the protective plate between two columns is arranged at, the engineering fence also includes the clamping device for clip protective plate, described
The top and bottom of column offer the chute coordinated with clamping device, and the clamping device includes sliding with column upper end chute
Connection and the upper neck that Open Side Down, be connected with the sliding of column lower end chute and the lower bayonet slot of opening upwards, be vertically arranged at it is vertical
The upper rack of post inner upper end, the lower tooth bar for being vertically arranged at column interior lower end, while engaging the biography of upper rack and lower tooth bar
Moving gear, one end penetrate column and are connected to the rotating shaft of travelling gear, are arranged at the limiting tooth that rotating shaft passes one end outside column
Wheel, the actuator rotated for drive shaft and the limit assembly for limiting position limited gear rotation, the part of upper neck are prolonged
Extend in chute and be fixedly connected with upper rack upper end, the part of lower bayonet slot is extended in chute and fixed with the lower end of lower tooth bar
Connection, the upper and lower side of the protective plate is arranged in neck, lower bayonet slot respectively
By using above-mentioned technical proposal, when rotating travelling gear by actuator, travelling gear drive upper limit gear and
The relative motion of lower limit gear or opposite motion, and then drive upper neck and lower bayonet slot relative motion or opposite motion.Peace
When filling engineering fence, first hollow pillar stand is intervally arranged and built in room around foundation ditch, one piece of protective plate is set between each two column.
When protective plate is installed, first the lower end of protective plate is embedded in two neighboring lower bayonet slot, then by protective plate righting, actuator is used
So that position limited gear relative motion, the final upper edge for causing upper neck to be caught in protective plate, so two neighboring lower bayonet slot coordinates
Two upper necks can just play fixation to one piece of protective plate, and be finally completed the installation of all protective plates, and completion is built to room
Foundation ditch is enclosed.Compared to existing engineering fence, newly-designed engineering fence is fixed without using steel wire, also in the absence of obvious
Ridge, and then be not easy the clothes of hanging breaking pedestrian, using safer.
The present invention is further arranged to：The limit assembly include be fixedly connected on column outer wall base plate, be opened in
Slideway on base plate, two pressing plates being arranged at intervals on slideway, the push rod of the sliding connection slideway, it is arranged at push rod and approaches
The alignment pin of position limited gear one end and it is sheathed on push rod and positioned at the spring between alignment pin and pressing plate, the two ends of push rod are equal
Extend base plate, it is supported between adjacent two tooth on position limited gear close to one end of position limited gear under spring pressure effect.
By using above-mentioned technical proposal, two pressing plates, which coordinate, is limited to push rod in slideway, and a permission push rod is along slideway
Sliding.Spring is located between pressing plate and alignment pin and in compressive state simultaneously, and spring can promote push rod to support and be located at position limited gear
Between upper adjacent two tooth.At this moment push rod can prevent the rotation of position limited gear, and then position limited gear can prevent the rotation of rotating shaft, rotating shaft
The rotation of travelling gear can be prevented, and then the relative position of upper neck and lower bayonet slot no longer changes, and keeps to protective plate
Clamping.
When needing to adjust the position of upper neck and lower bayonet slot, manpower pulling push rod overcomes the elastic force of spring so that top
The end of bar departs from position limited gear, and at this moment staff can adjust the position of upper neck and lower bayonet slot by actuator.Regulation
After the completion of unclamp push rod, push rod is moved to the direction close to position limited gear under the action of the spring, and its end can be supported again
On current position limited gear between corresponding two tooth, complete to the spacing of position limited gear.
The present invention is further arranged to：The slideway is rectangular, and the push rod is rectangular and it is close to the one of position limited gear
End is wedge shaped, and the pressing plate is in " C " font and inner ring is rectangular.
By using above-mentioned technical proposal, rectangle chute, the rectangular shape of rectangle push rod and tapered end, " C " font pressure
The setting of plate is for accurate and effective the supporting of push rod energy and is located on position limited gear between adjacent two tooth, finally causes limiting tooth
Wheel is fast and effectively spacing.
The present invention is further arranged to：The lower end of the column is connected with base, and the base is in " ten " font, base
The mounting hole of a up/down perforation is offered on four angle points respectively.
By using above-mentioned technical proposal, column can be directly placed on ground, can also be buried in ground, may be used also
To be connected to by expansion bolt on ground, install more convenient.
The present invention is further arranged to：If the engineering fence also includes the dry-pressing for being fitted in protective plate the upper side and lower side
Bar, the length of the press strip is identical with the length of protective plate, and the upper neck and the lower bayonet slot are opened in the side away from column
Provided with screwed hole, the compressing member for press strip being pressed on opposite side cell wall is combined with screwed hole.
By using above-mentioned technical proposal, in existing engineering fence, steel wire is cut for color steel equivalent to blunt mouth
Cutter, when in color steel plate face by certain pressure, steel wire can gradually cut color steel, pressure is larger or pressure more
When persistently, steel wire is eventually deviate from from color steel, and then make it that color steel departs from column, brings potential safety hazard.
Using compressing member can by protective plate being squeezed in upper neck and lower bayonet slot tightly, reduce that protective plate and column depart from can
Energy property, while press strip can play protective action to the upper side and lower side of protective plate, equivalent to the resistance to compression energy for enhancing protective plate
Power, and then make it that the security performance of engineering fence is more preferable.
The present invention is further arranged to：The compressing member includes screw rod and is connected to the rotation that screw rod deviates from column one end
Button, knob is made of plastic and thermoplastic is on screw rod.
By using above-mentioned technical proposal, staff can it is more light, comfortably turn compressing member.
The present invention is further arranged to：The auxiliary support bar being obliquely installed, Auxiliary support are hinged with the middle part of the column
Bar is connected with the leg of perpendicular setting away from one end of pin joint.
By using above-mentioned technical proposal, the ground that room is built around foundation ditch may be more soft or not smooth enough, leads to
Auxiliary support effect can be played to engineering fence by crossing auxiliary support bar and leg so that the stability of engineering fence is more preferable.
The present invention is further arranged to：The lower end of chute below the upper end of chute above the column and the column
" C " shape clip is connected with respectively, and " C " shape clip is used to close chute
By using above-mentioned technical proposal, " C " shape clip can prevent people in the case of maloperation, upper neck and lower bayonet slot from
Depart from chute.
The present invention is further arranged to：The actuator is handwheel.
By using above-mentioned technical proposal, rotate more convenient using manpower driving travelling gear.
The present invention is further arranged to：The column is rectangular.
By using above-mentioned technical proposal, the shape of column is easy to the installation of clamping device.
In summary, the invention has the advantages that：During installing engineering fence, first hollow pillar stand is intervally arranged
Room is built around foundation ditch, then the lower end of protective plate is embedded in two neighboring lower bayonet slot, then by protective plate righting, uses actuator
So that position limited gear relative motion, the final upper edge for causing upper neck to be caught in protective plate, so two neighboring lower bayonet slot coordinates
Two upper necks just can play fixation to one piece of protective plate, can finally complete the installation of all protective plates, complete to room
Build enclosing for foundation ditch.Compared to existing engineering fence, newly-designed engineering fence is fixed without using steel wire, also in the absence of bright
Aobvious ridge, and then it is not easy the clothes of hanging breaking pedestrian, using safer.
Brief description of the drawings
Fig. 1 is the structural representation of engineering fence；
Fig. 2 is to show view that the structure of upper neck and gliding groove is done；
Fig. 3 is to show view that clamping device is done；
Fig. 4 is the enlarged drawing in Fig. 3 A portions；
Fig. 5 is the structural representation of limit assembly.
In figure, 1, column；2nd, protective plate；3rd, base；4th, mounting hole；5th, auxiliary support bar；6th, leg；7th, clamping device；
70th, upper neck；71st, lower bayonet slot；72nd, upper rack；73rd, lower tooth bar；74th, travelling gear；75th, rotating shaft；76th, position limited gear；77th, drive
Moving part；78th, limit assembly；780th, base plate；781st, slideway；782nd, pressing plate；783rd, push rod；784th, alignment pin；785th, spring；8th, it is sliding
Groove；9th, clip；10th, press strip；11st, compressing member.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
Embodiment 1：A kind of engineering fence, reference picture 1, including the hollow pillar stand 1 that is intervally arranged and it is arranged at two and stands
Protective plate 2 between post 1.Here by taking two root posts 1 and one piece of protective plate 2 as an example.Column 1 is rectangular, and its lower end is connected with
Base 3, base 3 is in " ten " font, is welded by steel plate, offering about one respectively on four angle points of base 3 passes through
Logical mounting hole 4, mounting hole 4 is used for and expansion bolt coordinates.The middle part of column 1 is hinged with an Auxiliary support being obliquely installed
Bar 5, auxiliary support bar 5 is connected with the leg 6 of perpendicular setting away from one end of pin joint.Auxiliary support bar 5 and leg 6 make
Manufactured with steel pipe, both plays a part of Auxiliary support to engineering fence, it is adaptable to out-of-flatness or more soft ground
On.Auxiliary support bar 5 and leg 6 are generally located on away from the side of pedestrian simultaneously, have so both been not take up road or can have been resisted one
Part pedestrian or vehicle are applied to the pressure on protective plate 2, and protective plate 2 is typically chosen as rubber and plastic boards or color steel.
Reference picture 2, engineering fence also includes the clamping device 7 for clip protective plate 2.Open the top and bottom of column 1
Provided with the chute 8 coordinated with clamping device 7.Clamping device 7, which includes sliding with column 1 upper end chute 8, to be connected and Open Side Down
Upper neck 70, with the lower end chute 8 of column 1 slide be connected and opening upwards lower bayonet slot 71.With reference to Fig. 3, Fig. 4, clamping device 7 is also
Including the lower tooth bar 73, simultaneously for being vertically arranged at the upper rack 72 of the inner upper end of column 1, being vertically arranged at the interior lower end of column 1
The travelling gear 74 of engagement upper rack 72 and lower tooth bar 73, one end penetrate column 1 and are connected to the rotating shaft 75 of travelling gear 74, set
It is placed in position limited gear 76, the actuator 77 for the rotation of drive shaft 75 and fixation that rotating shaft 75 passes one end outside column 1
Be connected to the limit assembly 78 that column 1 is used to limit the rotation of position limited gear 76, the part of upper neck 70 extend in chute 8 and with
The upper end of upper rack 72 is fixedly connected, and the part of lower bayonet slot 71 is extended in chute 8 and is fixedly connected with the lower end of lower tooth bar 73.It is vertical
The upper end of the chute 8 of the top of post 1 and the lower end of the chute 8 of the lower section of column 1 are connected with " C " shape clip 9 respectively, and " C " shape clip 9 is used
In closing chute 8, people can be prevented in the case of maloperation, upper neck 70 and lower bayonet slot 71 depart from from chute 8.
Reference picture 5, actuator 77 elects handwheel as.Limit assembly 78 includes the base plate being fixedly connected on the outer wall of column 1
780th, the rectangle slideway 781 being opened on base plate 780, two pressing plates 782 being arranged at intervals on rectangle slideway 781, sliding connect
Connect the rectangle push rod 783 of rectangle slideway 781, be arranged at rectangle push rod 783 close to the alignment pin 784 of the one end of position limited gear 76 and
It is sheathed on rectangle push rod 783 and positioned at the spring 785 between alignment pin 784 and pressing plate 782, the two ends of rectangle push rod 783 are equal
Extend base plate 780, its close to one end of position limited gear 76 it is wedge shaped and the pressure of spring 785 effect under support be located at position limited gear
On 76 between adjacent two tooth.Pressing plate 782 is in " C " font and inner ring is rectangular, rectangle chute 8, the rectangular shape of rectangle push rod 783
And the setting of tapered end, " C " font pressing plate 782 is for accurate and effective the supporting of the energy of push rod 783 and is located on position limited gear 76
Between adjacent two tooth.Base plate 780 can be welded with column 1, can also be connected by bolt with column 1.
Reference picture 1, engineering fence also includes two press strips 10 for being fitted in the upper side and lower side of protective plate 2, the length of press strip 10
Degree is identical with the length of protective plate 2, and upper neck 70 and lower bayonet slot 71 offer screwed hole, screwed hole in the side away from column 1
In be combined with compressing member 11 for being pressed in press strip 10 on opposite side cell wall.Compressing member 11 includes screw rod and is connected to spiral shell
Bar deviates from the knob of the one end of column 1, and knob is made of plastic and thermoplastic is on screw rod.
The installation method of engineering fence is that hollow pillar stand 1 during installing engineering fence, is first intervally arranged in Fang Jianji by reference picture 1
Around hole, then by the two neighboring lower bayonet slot 71 of lower end insertion of protective plate 2, then by the righting of protective plate 2, manpower pulls push rod
783 overcome the elastic force of spring 785 so that the end of push rod 783 departs from position limited gear 76, and at this moment staff can be by driving
Moving part 77 causes the relative motion of position limited gear 76 so that upper neck 70 is caught in the upper edge of protective plate 2, at this moment can be by push rod
783 are unclamped, and push rod 783 is moved in the presence of spring 785 to close to the direction of position limited gear 76, and its end can be supported again
Between corresponding two tooth on current position limited gear 76, complete to the spacing of position limited gear 76.
Two neighboring lower bayonet slot 71 coordinates two upper one piece of protective plates 2 of neck 70 pair to play fixation.Next respectively
Two neighboring lower bayonet slot 71 and it is two neighboring on press strip 10 is laid in neck 70, turn compressing member 11 so that compressing 11 will pressure
Being squeezed on protective plate 2 tightly of bar 10, so by press strip 10 by protective plate 2 tightly be squeezed in upper neck 70 and lower bayonet slot
In 71, reduce the possibility that protective plate 2 departs from column 1, make while press strip 10 plays protection to the upper side and lower side of protective plate 2
With enhancing the anti-pressure ability of protective plate 2.Auxiliary support bar 5 and leg 6 are deployed if necessary, traveling one is entered to engineering fence
The support of step.
This specific embodiment is only explanation of the invention, and it is not limitation of the present invention, people in the art
Member can make the modification without creative contribution to the present embodiment as needed after this specification is read, but as long as at this
All protected in the right of invention by Patent Law.
Claims (10)
1. a kind of engineering fence, including the hollow pillar stand (1) being intervally arranged and the protective plate being arranged between two columns (1)
(2), it is characterised in that：The engineering fence also includes the clamping device (7) for clip protective plate (2), the column (1)
Top and bottom offer the chute (8) coordinated with clamping device (7), and the clamping device (7) includes sliding with column (1) upper end
Groove (8) sliding connection and the upper neck (70) that Open Side Down, it is connected with column (1) lower end chute (8) sliding and opening upwards
Lower bayonet slot (71), the upper rack (72) for being vertically arranged at column (1) inner upper end, it is vertically arranged at column (1) interior lower end
Lower tooth bar (73), while engaging upper rack (72) and the travelling gear (74) of lower tooth bar (73), one end penetrate column (1) and connected
Rotating shaft (75) in travelling gear (74), it is arranged at rotating shaft (75) and passes the position limited gear (76) of the one end of column (1) outside, is used for
The actuator (77) that drive shaft (75) is rotated and the limit assembly (78) for limiting position limited gear (76) rotation, upper neck
(70) part is extended in chute (8) and is fixedly connected with upper rack (72) upper end, and the part of lower bayonet slot (71) extends to cunning
It is fixedly connected in groove (8) and with the lower end of lower tooth bar (73), the upper and lower side of the protective plate (2) is arranged in neck respectively
(70), in lower bayonet slot (71).
2. engineering fence according to claim 1, it is characterised in that：The limit assembly (78) is vertical including being fixedly connected on
Base plate (780) on post (1) outer wall, the slideway (781) being opened on base plate (780), two be arranged at intervals on slideway (781)
Individual pressing plate (782), sliding connect the push rod (783) of the slideway (781), are arranged at push rod (783) close to position limited gear (76)
The alignment pin (784) of one end and it is sheathed on push rod (783) and positioned at the spring between alignment pin (784) and pressing plate (782)
(785), base plate (780) is extended at the two ends of push rod (783), and it is pressed close to one end of position limited gear (76) in spring (785)
Lower support of power effect is located between upper adjacent two tooth of position limited gear (76).
3. engineering fence according to claim 2, it is characterised in that：The slideway (781) is rectangular, the push rod
(783) rectangular and it is wedge shaped close to one end of position limited gear (76), the pressing plate (782) is in square in " C " font and inner ring
Shape.
4. the engineering fence according to claim 1 or 2 or 3, it is characterised in that：The lower end of the column (1) is connected with bottom
Seat (3), the base (3) is in the mounting hole for offering a up/down perforation on " ten " font, four angle points of base (3) respectively
(4)。
5. the engineering fence according to claim 1 or 2 or 3, it is characterised in that：The engineering fence is also anti-including being fitted in
Some press strips (10) of backplate (2) the upper side and lower side, the length of the press strip (10) is identical with the length of protective plate (2), described
Upper neck (70) and the lower bayonet slot (71) offer to be combined with screwed hole, screwed hole in the side away from column (1) to be used for
Press strip (10) is pressed in the compressing member (11) on opposite side cell wall.
6. engineering fence according to claim 5, it is characterised in that：The compressing member (11) includes screw rod and is connected to
Screw rod deviates from the knob of column (1) one end, and knob is made of plastic and thermoplastic is on screw rod.
7. the engineering fence according to claim 1 or 2 or 3, it is characterised in that：It is hinged with and inclines in the middle part of the column (1)
The auxiliary support bar (5) tiltedly set, auxiliary support bar (5) is connected with the leg of perpendicular setting away from one end of pin joint
(6)。
8. the engineering fence according to claim 1 or 2 or 3, it is characterised in that：Chute (8) above the column (1)
The lower end of chute (8) below upper end and the column (1) is connected with " C " shape clip (9) respectively, and " C " shape clip (9) is used to seal
Close chute (8).
9. engineering fence according to claim 1, it is characterised in that：The actuator (77) is handwheel.
10. engineering fence according to claim 1, it is characterised in that：The column (1) is rectangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710179324.XA CN106948655B (en) | 2017-03-23 | 2017-03-23 | Engineering fence |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710179324.XA CN106948655B (en) | 2017-03-23 | 2017-03-23 | Engineering fence |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106948655A true CN106948655A (en) | 2017-07-14 |
| CN106948655B CN106948655B (en) | 2019-02-01 |
Family
ID=59473031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710179324.XA Expired - Fee Related CN106948655B (en) | 2017-03-23 | 2017-03-23 | Engineering fence |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106948655B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107795193A (en) * | 2017-11-11 | 2018-03-13 | 李仲来 | A kind of environment-friendly type road bridge construction guard rail |
| CN111075261A (en) * | 2019-12-27 | 2020-04-28 | 中国二冶集团有限公司 | Protective fence |
| CN111515407A (en) * | 2020-05-23 | 2020-08-11 | 苏州鲁信新材料科技有限公司 | Continuous feeding device and gas atomization powder making system |
| CN112727237A (en) * | 2020-12-25 | 2021-04-30 | 郑州航空工业管理学院 | Safety management system for construction engineering site construction |
| CN112942197A (en) * | 2021-02-02 | 2021-06-11 | 李大川 | Guardrail for municipal construction |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090321697A1 (en) * | 2008-06-25 | 2009-12-31 | Glen Robinson | Viewer fence |
| CN204754444U (en) * | 2015-04-13 | 2015-11-11 | 张家港固耐特围栏***有限公司 | Clamp plate of protection rail stand |
| CN105518237A (en) * | 2013-06-25 | 2016-04-20 | 德拉加娜·皮耐里 | Temporary fencing improvements |
| CN106088802A (en) * | 2016-06-28 | 2016-11-09 | 蒋爱君 | A kind of method using fence sand-proof |
| CN106121361A (en) * | 2016-06-28 | 2016-11-16 | 蒋爱君 | A kind of fence |
-
2017
- 2017-03-23 CN CN201710179324.XA patent/CN106948655B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090321697A1 (en) * | 2008-06-25 | 2009-12-31 | Glen Robinson | Viewer fence |
| CN105518237A (en) * | 2013-06-25 | 2016-04-20 | 德拉加娜·皮耐里 | Temporary fencing improvements |
| CN204754444U (en) * | 2015-04-13 | 2015-11-11 | 张家港固耐特围栏***有限公司 | Clamp plate of protection rail stand |
| CN106088802A (en) * | 2016-06-28 | 2016-11-09 | 蒋爱君 | A kind of method using fence sand-proof |
| CN106121361A (en) * | 2016-06-28 | 2016-11-16 | 蒋爱君 | A kind of fence |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107795193A (en) * | 2017-11-11 | 2018-03-13 | 李仲来 | A kind of environment-friendly type road bridge construction guard rail |
| CN111075261A (en) * | 2019-12-27 | 2020-04-28 | 中国二冶集团有限公司 | Protective fence |
| CN111515407A (en) * | 2020-05-23 | 2020-08-11 | 苏州鲁信新材料科技有限公司 | Continuous feeding device and gas atomization powder making system |
| CN112727237A (en) * | 2020-12-25 | 2021-04-30 | 郑州航空工业管理学院 | Safety management system for construction engineering site construction |
| CN112942197A (en) * | 2021-02-02 | 2021-06-11 | 李大川 | Guardrail for municipal construction |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106948655B (en) | 2019-02-01 |
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