CN117306394B - Flower box template for accurate construction and construction method thereof - Google Patents
Flower box template for accurate construction and construction method thereof Download PDFInfo
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- CN117306394B CN117306394B CN202311173742.XA CN202311173742A CN117306394B CN 117306394 B CN117306394 B CN 117306394B CN 202311173742 A CN202311173742 A CN 202311173742A CN 117306394 B CN117306394 B CN 117306394B
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- template
- flower box
- mold
- guardrail
- guardrail template
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/02—Receptacles, e.g. flower-pots or boxes; Glasses for cultivating flowers
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/10—Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges
- E01D19/103—Parapets, railings ; Guard barriers or road-bridges
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
本发明提供一种精准施工的花箱模板及其施工方法，包括第一护栏模板和第二护栏模板，第一护栏模板和第二护栏模板的上侧通过支撑架连接，支撑架上穿设有第一吊杆，第一吊杆的底部通过驱动单元连接有花箱伸缩模，花箱伸缩模包括底模，底模两侧对称设有侧模，驱动单元用于驱动底模在第一吊杆的轴线方向移动，底模两侧分别设有第二吊杆，第二吊杆的上侧和支撑架固定，第二吊杆上套设有滑套和弹簧，滑套外侧设有耳板，耳板通过连接板和侧模铰接，弹簧用于为滑套提供稳定的支撑力。
The present invention provides a precisely constructed flower box template and a construction method thereof, comprising a first guardrail template and a second guardrail template, the upper sides of the first guardrail template and the second guardrail template are connected by a support frame, a first suspension rod is passed through the support frame, the bottom of the first suspension rod is connected to a flower box telescopic mold through a driving unit, the flower box telescopic mold comprises a bottom mold, side molds are symmetrically provided on both sides of the bottom mold, the driving unit is used to drive the bottom mold to move in the axial direction of the first suspension rod, second suspension rods are respectively provided on both sides of the bottom mold, the upper side of the second suspension rod is fixed to the support frame, a sliding sleeve and a spring are sleeved on the second suspension rod, an ear plate is provided on the outer side of the sliding sleeve, the ear plate is hinged to the side mold through a connecting plate, and the spring is used to provide a stable supporting force for the sliding sleeve.
Description
Technical Field
The invention relates to the technical field of civil construction, in particular to a flower box template for precise construction and a construction method thereof.
Background
With the progress of society, there are increasing demands on construction technology. The three-dimensional pace of urban traffic is rapidly advanced, the concept of 'bridge aesthetics' proposed by LyonHart is introduced on the basis of meeting the use function of an urban bridge, the demands on cultural art, landscape modeling and the like of the urban bridge are more and more high, and a bridge edge guardrail with flower grooves is the product of the concept. For the construction with flower box guardrail, directly inlay the flower tank in bridge guardrail generally, in order to guarantee the affluence in space, the template is generally made right angle U type, receives its template of restriction of structural style to pull the mode of hard sled to demolish with giving birth to generally, along with the increase of turnover number of times, the template is liable to take place to warp, and the construction safety is poor, and the efficiency of construction is low.
The Chinese patent document CN 114351625A describes a reinforced concrete flower box guardrail and a construction method, and as the guardrail is adaptively arranged according to the bridge deck, the bridge decks at different positions on the bridge have different dimensional angles, and the method cannot adapt to the change of the bridge deck and has defects in use; chinese patent document CN 112663493A describes a concrete crash barrier structure of a flower box for a bridge, but it does not specifically describe how to ensure the construction accuracy of the flower box, and also has use defects.
Disclosure of Invention
The invention provides a flower box template for accurate construction and a construction method thereof, which solve the problems of low construction efficiency of flower boxes on guardrails, inconvenient assembly and disassembly of the flower box template and low overall construction precision.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a flower box template of accurate construction, including first guardrail template and second guardrail template, the upside of first guardrail template and second guardrail template is passed through the support frame and is connected, wear to be equipped with first jib on the support frame, the bottom of first jib is connected with the flexible mould of flower box through drive unit, the flexible mould of flower box includes the die block, die block bilateral symmetry is equipped with the side mould, drive unit is used for driving the die block and removes at the axis direction of first jib, the die block both sides are equipped with the second jib respectively, the upside and the support frame of second jib are fixed, the cover is equipped with sliding sleeve and spring on the second jib, the sliding sleeve outside is equipped with the otic placode, the otic placode passes through connecting plate and side mould articulated, the spring is used for providing stable holding power for the sliding sleeve.
In the preferred scheme, the support frame includes crossbeam and vertical beam, and the vertical beam supports and leans on the outside of second guardrail template, and the vertical beam passes through screw and second guardrail template to be connected, and one side of crossbeam relative vertical beam is equipped with the round bar, and the round bar wears to establish on first guardrail template, and the round bar passes through the nut and is connected with first guardrail template.
In the preferred scheme, the upper portion of side form articulates through the axostylus axostyle has the clamp plate, and the bottom of clamp plate is equipped with the arch, and the arch is used for filling the breach between the side form of both sides and first guardrail template and the second guardrail template respectively, and the clamp plate passes through the latch hook and is connected with first guardrail template and second guardrail template respectively.
In the preferred scheme, the tops of first guardrail template and second guardrail template are parallel respectively and are equipped with the montant, and the top of clamp plate is articulated through the screw has the latch hook, latch hook detachable and montant joint.
In the preferred scheme, the bottom of first jib has set firmly the roof, and drive unit includes fixed cover and jacking cover, and the jacking cover sets firmly in the bottom of roof, and fixed cover passes through the base to be connected with the die block, and fixed cover internal rotation is equipped with the screw rod, and the screw rod bottom has set firmly the second helical gear, and the second helical gear meshing is connected with first helical gear, and first helical gear sets up on the motor, and motor and die block are connected, screw rod and jacking cover threaded connection.
In the preferred scheme, the downside of second helical gear is equipped with the bull stick, and the cover is equipped with the stop collar on the bull stick, is equipped with the bearing on the die block, and the bull stick wears to establish on the bearing, and the stop collar supports and leans on the bearing top.
In the preferred scheme, the fixed cover inboard is equipped with first step, and the jacking cover outside is equipped with the second step, first step and second step assorted.
In the preferred scheme, the both sides of sliding sleeve are equipped with the lock sleeve respectively, and lock sleeve and second jib threaded connection, spring both sides are supported respectively on lock sleeve and sliding sleeve.
In the preferred scheme, the die block both sides are equipped with first contact plate respectively, and the inboard of side form is equipped with the second contact plate, and the parallel is equipped with a plurality of first floor on the second contact plate, connects through the second floor between two first contact plates, runs through on the first contact plate and is equipped with waist circular slot, runs through on the second contact plate and is equipped with the through-hole, and the screw wears to establish in waist circular slot and through-hole, and the screw passes through the nut and connects die block and side form, and connecting plate and first floor hinge.
In a preferred scheme, the construction method of the flower box template comprises the following steps of:
s1, finishing processing of each part according to a design drawing, and performing calibration verification;
S2, installing the driving unit into a flower box expansion die, and debugging and running;
S3, adjusting the telescopic mould of the flower box to an open mould state through a driving unit;
s4, positioning the first guardrail template and the second guardrail template is completed, and the first guardrail template and the second guardrail template are fixed by using a support frame;
S5, integrally hoisting the flower box expansion die and the driving unit to the lower part of the support frame, and locking the first suspender and the second suspender respectively through nuts;
S6, adjusting the flexible mold of the flower box to a mold closing state through a driving unit, and adjusting the overall tightness through screws;
s7, opening and closing the first guardrail templates and the second guardrail templates on the two sides respectively through the pressing plates, so that integral transverse deviation correction is completed, and the position installation accuracy of the installation support frame and the flower box expansion die is ensured;
s8, opening the pressing plate, pouring, vibrating and constructing, and closing the pressing plate after the vibration is finished;
s9, removing the mold after pouring maintenance is completed, guaranteeing that each part is separated from the poured concrete surface, and integrally transporting to a next construction point;
s10, circularly operating S4-S9 until the construction is completed.
The beneficial effects of the invention are as follows: the support frame provides the installation basis for the flexible mould of flower case, the clamp plate can play simultaneously and detect the size width of pouring the guardrail between first guardrail template and the second guardrail template, and the effect of the accuracy of the position of pouring the guardrail relatively of flower case after pouring the completion, device overall structure is reliable, the template dismantles conveniently, the hard sled of drawing of giving birth to when having avoided adopting traditional mode to construct, lead to template life shorter at last, use cost is high situation, during the use, only need driving motor can accomplish holistic compound die or die sinking, the speed and the distance that the lock sleeve below the adjustment spring can change holistic side form withdrawal, the maintenance is convenient, can guarantee the high efficiency of construction, and has good economic benefits.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a schematic cross-sectional view of a poured guardrail of the present invention;
FIG. 2 is a schematic front view of the mounting bracket of the present invention;
FIG. 3 is a schematic front view of the telescopic mold for installing flower boxes of the present invention in state one;
FIG. 4 is a schematic front view state II of the telescopic mould for installing the flower box;
FIG. 5 is a schematic view showing the internal structure of the driving unit of the present invention;
FIG. 6 is a schematic left-hand view of the invention in which the flower box expansion die is installed;
FIG. 7 is a schematic diagram of the mold closing of the flower box expansion mold of the present invention;
FIG. 8 is a schematic drawing of the invention in a flower box expansion die open mode;
FIG. 9 is a schematic view of the overall structure of the present invention in state one;
FIG. 10 is a schematic front view of FIG. 9;
FIG. 11 is a schematic top view of FIG. 9;
FIG. 12 is a schematic view of the overall structure of the present invention in state two;
FIG. 13 is a schematic view of the overall structure of the present invention, state three;
FIG. 14 is a schematic view of the explosive structure of FIG. 9 in state one;
FIG. 15 is a schematic view of the explosive structure of FIG. 9 in a second state;
FIG. 16 is a schematic view of the explosive structure of FIG. 9 in state three;
FIG. 17 is a schematic view of the explosive structure of FIG. 9 in state four;
FIG. 18 is a schematic view showing the overall structure of the roof mounting drive unit of the present invention;
FIG. 19 is a schematic view of the explosive structure of FIG. 18;
Fig. 20 is a schematic view of the top plate structure of the present invention.
In the figure: a first guardrail template 1; a second guardrail template 2; a support 3; a cross beam 301; a vertical beam 302; a round bar 303; a first boom 4; a nut 5; a flower box expansion die 6; a bottom die 601; a side form 602; a first contact plate 603; a second contact plate 604; waist-round groove 605; a through hole 606; a first rib 607; a second rib 608; a top plate 7; a drive unit 8; a fixing sleeve 801; jacking sleeve 802; a motor 803; a first helical gear 804; a second helical gear 805; a screw 806; a base 807; a rotating rod 808; stop collar 809; a bearing 810; a first step 811; a second step 812; a second boom 9; a lock sleeve 10; a sliding sleeve 11; a spring 12; a shaft lever 13; a platen 14; a protrusion 15; a screw 16; a latch hook 17; a vertical bar 18; an ear plate 19; and a connection plate 20.
Detailed Description
1-8, A flower box template of accurate construction, including first guardrail template 1 and second guardrail template 2, the upside of first guardrail template 1 and second guardrail template 2 passes through support frame 3 to be connected, wear to be equipped with first jib 4 on the support frame 3, the bottom of first jib 4 is connected with flower box flexible mould 6 through drive unit 8, flower box flexible mould 6 includes die block 601, die block 601 bilateral symmetry is equipped with side form 602, drive unit 8 is used for driving die block 601 and removes in the axis direction of first jib 4, die block 601 both sides are equipped with second jib 9 respectively, the upside and the support frame 3 of second jib 9 are fixed, the cover is equipped with sliding sleeve 11 and spring 12 on the second jib 9, the sliding sleeve 11 outside is equipped with otic placode 19, otic placode 19 is articulated through connecting plate 20 and side form 602, spring 12 is used for providing stable holding power for sliding sleeve 11. According to the structure, the first suspender 4 plays a role of bearing the integral weight of the flower box expansion die 6 and the driving unit 8, the stability of the state of the flower box expansion die 6 during die opening or die closing is guaranteed, meanwhile, the second suspender 9 is matched, the suspended weight is uniformly spread, the integral stress of the support frame 3 at different positions is guaranteed to be controllable, when die closing is needed, the bottom die 601 is moved downwards, at the moment, the side die 602 is moved downwards under the action of the sliding sleeve 11 through the lug plate 19 and the connecting plate 20 until the bottom die 601 and the side die 602 are closed, after the die closing is completed, the fixation between the bottom die 601 and the side die 602 is completed by using the screw 16, and the smoothness of the inner side wall after pouring is guaranteed; when the mould needs to be opened, the bottom mould 601 is moved upwards, the side mould 602 is moved upwards under the action of the elastic force of the spring 12 and finally separated from the surface of the poured concrete, so that the hard prying is avoided, the use of the flower box expansion mould 6 is convenient, and the installation and the disassembly are flexible.
In the preferred scheme, the support frame 3 includes crossbeam 301 and vertical beam 302, and vertical beam 302 supports the outside of leaning on second guardrail template 2, and vertical beam 302 passes through screw 16 and second guardrail template 2 to be connected, and the one side of crossbeam 301 relative vertical beam 302 is equipped with round bar 303, and round bar 303 wears to establish on first guardrail template 1, and round bar 303 passes through nut 5 and is connected with first guardrail template 1. Be provided with logical groove on crossbeam 301, first jib 4 can transversely remove to guarantee that the flexible mould 6 of flower box of its below hoist and mount is accurate in position, support frame 3 is fixed first guardrail template 1 and second guardrail template 2 from upper portion, the safety and the convenience of being convenient for construction, because the guardrail sets up in the both sides of decking, when the decking has higher height, the construction then has certain risk, consequently adopts support frame 3 to increase the factor of safety of construction to a certain extent.
In a preferred embodiment, as shown in fig. 9-20, a pressing plate 14 is hinged to the upper portion of the side mold 602 through a shaft rod 13, a protrusion 15 is provided at the bottom of the pressing plate 14, the protrusion 15 is used for filling up a gap between the side mold 602 on two sides and the first guardrail mold 1 and the second guardrail mold 2 respectively, and the pressing plate 14 is connected with the first guardrail mold 1 and the second guardrail mold 2 respectively through a latch hook 17. Because the size of guardrail has been prescribed in the design, consequently the precision transmission chain that the cooperation of corresponding clamp plate 14 first guardrail template 1 and second guardrail template 2 and flower box flexible mould 6 formed is accomplished, clamp plate 14 has compensatied because when long-term the use, can't alleviate first guardrail template 1 and second guardrail template 2 and flower box flexible mould 6 to have the defect of deformation better, consequently after flower box flexible mould 6 is initially fixed, can cooperate the position of adjustment first guardrail template 1, second guardrail template 2, support frame 3 and flower box flexible mould 6, thereby guarantee the dimensional accuracy of guardrail and the positional accuracy of flower box, guaranteed the uniformity of guardrail from the source, thereby after the construction is accomplished, along the bridge to guaranteeing the streamline of guardrail lateral wall unanimously, whole more pleasing to the eye.
In the preferred scheme, the tops of first guardrail template 1 and second guardrail template 2 are parallel respectively and are equipped with montant 18, and the top of clamp plate 14 is articulated through screw 16 to have latch hook 17, latch hook 17 detachable and montant 18 joint. From this structure, guaranteed the clamp plate 14 respectively with first guardrail template 1 with the fixed convenience of second guardrail template 2, because the position of latch hook 17 is fixed relatively, its rotatory radius is fixed, is provided with U type groove at the front end of latch hook 17, U type groove and montant 18 external diameter are the same, and whole locking is effectual, convenient operation.
In the preferred scheme, roof 7 has been set firmly to the bottom of first jib 4, drive unit 8 includes fixed cover 801 and jacking cover 802, jacking cover 802 sets firmly in the bottom of roof 7, fixed cover 801 passes through base 807 and die block 601 to be connected, fixed cover 801 internal rotation is equipped with screw rod 806, screw rod 806 bottom has set firmly second helical gear 805, second helical gear 805 meshing is connected with first helical gear 804, first helical gear 804 sets up on motor 803, motor 803 and die block 601 are connected, screw rod 806 and jacking cover 802 threaded connection. The motor 803 adopts servo motor, and motor 803 and base 807 are fixed on die block 601, and the structure is so that can be through motor 803, the position of the change jacking cover 802 that then can be convenient has also changed the position of roof 7 promptly, and whole transmission moment of torsion is stable, and the bearing capacity is strong, and the drive is convenient.
In the preferred scheme, the downside of second helical gear 805 is equipped with bull stick 808, and the cover is equipped with stop collar 809 on bull stick 808, is equipped with bearing 810 on the die block 601, and bull stick 808 wears to establish on bearing 810, and stop collar 809 supports and leans on the bearing 810 top. The bearing 810 is fixed on the bottom die 601, so that the rotating rod 808 ensures the rotation precision of the screw 806, the overall installation precision is high, the work is stable, and the problems of blocking and lost steps do not occur.
In a preferred embodiment, a first step 811 is provided on the inner side of the fixing sleeve 801, a second step 812 is provided on the outer side of the jacking sleeve 802, and the first step 811 is matched with the second step 812. From this structure to make holistic contact surface bigger, coaxial effect is better, and first step 811 and second step 812 are provided with a plurality ofly respectively, and the lateral wall of first step 811 and second step 812 adopts smooth design, avoids the friction hindrance when rotating.
In the preferred scheme, the two sides of the sliding sleeve 11 are respectively provided with a lock sleeve 10, the lock sleeve 10 is in threaded connection with the second suspender 9, and the two sides of the spring 12 respectively lean against the lock sleeve 10 and the sliding sleeve 11. From this structure to make can change the position of sliding sleeve 11 through lock sleeve 10, can also further change the compression length of spring 12 simultaneously, guarantee that holistic recovery deformation's speed and elastic force are more controllable, the scope of adjustment is bigger, when needs die sinking, upwards remove die block 601, for the stability of being convenient for remove better, will be located the lock sleeve 10 of spring both sides upwards adjust simultaneously, the distance that the lock sleeve 10 of spring 12 downside upwards moved simultaneously is slightly greater than the distance that lock sleeve 10 of spring 12 upside upwards moved, keep spring 12 in compression state, holistic dynamic response effect is better.
In the preferred scheme, the die block 601 both sides are equipped with first contact plate 603 respectively, the inboard of side form 602 is equipped with second contact plate 604, be equipped with a plurality of first floor 607 on the second contact plate 604 in parallel, connect through the second floor 608 between two first contact plates 603, it is equipped with waist circular slot 605 to run through on the first contact plate 603, it is equipped with through-hole 606 to run through on the second contact plate 604, screw 16 wears to establish in waist circular slot 605 and through-hole 606, screw 16 passes through nut 5 and connects die block 601 and side form 602, connecting plate 20 and first floor 607 are articulated. From this structure to make die block 601 and side form 602 stable in structure, the bearing capacity is strong, and the mutual contact locking effect is better, and the rotation scope of connecting plate 20 is bigger, and holistic motion state can be convenient is looked over by constructor, and the construction effect is better.
In a preferred scheme, the construction method of the flower box template comprises the following steps of:
s1, finishing processing of each part according to a design drawing, and performing calibration verification;
S2, installing the driving unit 8 into the flower box expansion die 6, and debugging and running;
S3, adjusting the flower box expansion die 6 to an open die state through the driving unit 8;
s4, positioning the first guardrail template 1 and the second guardrail template 2 is completed, and the first guardrail template 1 and the second guardrail template 2 are fixed by using a support frame 3;
s5, integrally hoisting the flower box expansion die 6 and the driving unit 8 to the lower part of the support frame 3, and locking the first suspender 4 and the second suspender 9 respectively through nuts 5;
s6, adjusting the flower box expansion die 6 to a die closing state through a driving unit 8, and adjusting the overall tightness through a screw 16;
S7, opening and closing the first guardrail templates 1 and the second guardrail templates 2 on the two sides respectively through the pressing plates 14, so that the integral transverse deviation correction is completed, and the position installation accuracy of the installation support frame 3 and the flower box expansion die 6 is ensured;
s8, opening the pressing plate 14, pouring, vibrating and constructing, and closing the pressing plate 14 after the vibrating is completed;
s9, removing the mold after pouring maintenance is completed, guaranteeing that each part is separated from the poured concrete surface, and integrally transporting to a next construction point;
s10, circularly operating S4-S9 until the construction is completed.
The above embodiments are only preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention should be defined by the claims, including the equivalents of the technical features in the claims. I.e., equivalent replacement modifications within the scope of this invention are also within the scope of the invention.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311173742.XA CN117306394B (en) | 2023-09-12 | 2023-09-12 | Flower box template for accurate construction and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311173742.XA CN117306394B (en) | 2023-09-12 | 2023-09-12 | Flower box template for accurate construction and construction method thereof |
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| Publication Number | Publication Date |
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| CN117306394A CN117306394A (en) | 2023-12-29 |
| CN117306394B true CN117306394B (en) | 2024-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311173742.XA Active CN117306394B (en) | 2023-09-12 | 2023-09-12 | Flower box template for accurate construction and construction method thereof |
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| Country | Link |
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| CN112663493A (en) * | 2020-12-30 | 2021-04-16 | 浙江中咨交通科技有限公司 | Bridge area flower case concrete anticollision barrier structure |
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| CN207891735U (en) * | 2018-02-05 | 2018-09-21 | 安徽省公路桥梁工程有限公司 | A kind of guardrail template |
| CN210797262U (en) * | 2019-08-12 | 2020-06-19 | 中交二航局第四工程有限公司 | A combined steel form applied to the concrete guardrail of the planter |
| CN210482079U (en) * | 2019-08-20 | 2020-05-08 | 中铁四局集团第三建设有限公司 | Cast-in-place reinforced concrete flower groove type anti-collision guardrail |
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| CN218779387U (en) * | 2022-11-14 | 2023-03-31 | 新疆北新路桥集团股份有限公司 | Guardrail manufacturing mold |
| CN115748449A (en) * | 2022-12-16 | 2023-03-07 | 浙江交工集团股份有限公司 | Construction method of shaped steel die special-shaped flower trough cast-in-place concrete anti-collision guardrail |
| CN218951999U (en) * | 2023-01-10 | 2023-05-02 | 中铁十五局集团有限公司 | Convenient-to-detach flower groove guardrail template |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112663493A (en) * | 2020-12-30 | 2021-04-16 | 浙江中咨交通科技有限公司 | Bridge area flower case concrete anticollision barrier structure |
| CN112832126A (en) * | 2020-12-31 | 2021-05-25 | 浙江交工集团股份有限公司 | Construction method of special-shaped cast-in-situ concrete planter anti-collision guardrail |
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| Publication number | Publication date |
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| CN117306394A (en) | 2023-12-29 |
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