CN114960345A - Curb stone back concrete placement device - Google Patents
Curb stone back concrete placement device Download PDFInfo
- Publication number
- CN114960345A CN114960345A CN202210671636.3A CN202210671636A CN114960345A CN 114960345 A CN114960345 A CN 114960345A CN 202210671636 A CN202210671636 A CN 202210671636A CN 114960345 A CN114960345 A CN 114960345A
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- Prior art keywords
- pouring
- concrete
- kerbstone
- truck
- support
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- 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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- 239000004575 stone Substances 0.000 title description 2
- 238000005266 casting Methods 0.000 claims abstract description 14
- 238000009415 formwork Methods 0.000 abstract description 16
- 238000010276 construction Methods 0.000 abstract description 4
- 210000001503 joint Anatomy 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/12—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials
- E01C19/18—Devices for distributing road-metals mixed with binders, e.g. cement, bitumen, without consolidating or ironing effect
- E01C19/182—Devices for distributing road-metals mixed with binders, e.g. cement, bitumen, without consolidating or ironing effect solely for depositing
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/50—Removable forms or shutterings for road-building purposes; Devices or arrangements for forming individual paving elements, e.g. kerbs, in situ
- E01C19/502—Removable forms or shutterings, e.g. side forms; Removable supporting or anchoring means therefor, e.g. stakes
- E01C19/506—Removable forms or shutterings, e.g. side forms; Removable supporting or anchoring means therefor, e.g. stakes for kerbs, gutters or similar structures, e.g. raised portions, median barriers
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
A kerbstone backrest concrete pouring device relates to the field of pavement construction. This curbstone back concrete placement device is including the pouring truck that can follow the median removal, locate the hopper on the pouring truck, the sliding formwork of two liftable and with sliding formwork one-to-one's support and lever clamp plate, two supports are connected respectively in the pouring truck and can be followed the width direction removal of pouring truck, the one end of lever clamp plate is articulated with corresponding the support, the lever clamp plate passes the spring that pushes down that corresponds the support through at least one slip and is connected with corresponding sliding formwork, lever clamp plate can rotate along vertical plane and drive and correspond the sliding formwork and go up and down, leg joint has the locking subassembly that is used for the locking to push down the spring, two sliding formwork enclose respectively with one side and the ground that two curbstones are adjacent and form both ends open-ended pouring chamber, the bottom and two sliding formwork of hopper communicate through the concrete pipe respectively. The casting operation of the kerbstone backrest concrete can be rapidly and efficiently carried out by the kerbstone backrest concrete casting device.
Description
Technical Field
The application relates to the field of pavement construction, in particular to a kerbstone backrest concrete pouring device.
Background
The kerbstone needs to be installed on two sides of a road in the road construction process, the outer side of the kerbstone needs to be poured with backrest concrete, and particularly the pouring amount of the backrest concrete in the road with a middle belt and side belts is large. The existing method for pouring the backrest concrete at present is to pour a pool of concrete along the direction of the curbstone every several meters by using a concrete tank truck, manually shovel the concrete to the outer side of the curbstone and then smear and form the concrete, or unload the concrete in a bucket of an excavator by using the tank truck, pour the concrete to the rear side of the curbstone by using the excavator, or directly unload the concrete at the rear side of the curbstone along the direction of the curbstone by using the concrete tank truck, and in any mode, the problems of large labor amount, low construction efficiency, road surface pollution, curbstone pollution and the like are inevitable.
Disclosure of Invention
An object of this application is to provide a curb back concrete placement device, its casting operation that can high efficiency carry out curb back concrete to effectual reduction operation personnel's working strength.
The embodiment of the application is realized as follows:
the embodiment of the application provides a kerbstone backrest concrete pouring device, which comprises a pouring truck capable of moving along a separation belt between two kerbstones, a hopper arranged on the pouring truck, two liftable sliding templates, a bracket and a lever pressing plate, wherein the bracket and the lever pressing plate are in one-to-one correspondence with the sliding templates, the two brackets are respectively connected with the pouring truck and are configured to move along the width direction of the pouring truck, one end of the lever pressing plate is hinged with the corresponding bracket, the bottom of the lever pressing plate penetrates through a pressing spring of the corresponding bracket in a sliding manner to be connected with the top of the corresponding sliding template, the lever pressing plate is configured to rotate along a vertical plane and drive the corresponding sliding template to lift through the pressing spring, the bracket is connected with a locking assembly for locking or unlocking the corresponding pressing spring, one side of the two sliding templates adjacent to the two kerbstones and the surrounding ground respectively form a pouring cavity with openings at two ends, the bottom of the hopper is communicated with the two sliding templates through concrete conduits respectively.
In some alternative embodiments, a screw pump is provided within the hopper for delivering concrete to the concrete conduit.
In some alternative embodiments, a vibrator is attached to the sliding template.
In some alternative embodiments, the locking assembly includes a latch that is axially movable into and out of the holder and a corresponding hold-down spring.
In some optional embodiments, a weight block is connected to one end of the lever pressing plate away from the corresponding bracket.
In some alternative embodiments, at least one retractable gas spring support rod is connected between the two sliding forms.
In some optional embodiments, two sides of the pouring truck are respectively provided with at least two fixing holes extending along the width direction of the pouring truck, each fixing hole is connected with a connecting bolt sliding through the fixing hole, and the support is connected with each connecting bolt positioned on one side of the pouring truck.
In some optional embodiments, a traction steel wire rope is connected between each side of the pouring truck and each of the two sliding templates.
The beneficial effect of this application is: the utility model provides a concrete pouring device for a kerbstone backrest, which comprises a pouring truck capable of moving along a separation zone between two kerbstones, a hopper arranged on the pouring truck, two liftable sliding templates, a bracket and a lever pressing plate which are in one-to-one correspondence with the sliding templates, two supports are connected respectively in the pouring truck and are configured into and can follow the width direction removal of pouring truck, the one end of lever clamp plate is articulated with corresponding the support, the bottom of lever clamp plate is passed the lower pressure spring that corresponds the support through at least one slip and is connected with corresponding sliding template top, the lever clamp plate is configured into and can be followed vertical plane and rotate and drive through the lower pressure spring and correspond the sliding template and go up and down, the leg joint has the locking subassembly that is used for locking or unblock to correspond the lower pressure spring, two sliding template enclose respectively with one side that two curbstones are adjacent and ground and close and form both ends open-ended pouring chamber, the bottom and two sliding template of hopper communicate through the concrete pipe respectively. The application provides a curb back concrete placement device can carry out the pouring operation of curb back concrete by high efficiency to effectual reduction operation personnel's working strength.
Drawings
To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
FIG. 1 is a schematic structural view of a kerbstone back concrete pouring device provided by the embodiment of the application;
FIG. 2 is a schematic view of a first partial structure of a concrete pouring device for a kerbstone back rest according to an embodiment of the present disclosure;
fig. 3 is a second partial structural schematic diagram of a kerbstone back concrete pouring device provided by the embodiment of the application.
In the figure: 100. pouring truck; 110. a hopper; 120. sliding the template; 130. a support; 140. a lever pressing plate; 150. a traction wire rope; 160. pressing down the spring; 170. a pouring cavity; 180. a concrete conduit; 190. a screw pump; 200. a vibrator; 210. a bolt; 220. a balancing weight; 230. a gas spring support rod; 240. a fixing hole; 250. a connecting bolt; 300. a kerbstone; 310. a division strip.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when in use, and are used only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "suspended" and the like do not imply that the components are absolutely horizontal or suspended, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The characteristics and properties of the kerbstone back concrete pouring apparatus of the present application will be described in further detail with reference to the following examples.
As shown in fig. 1, 2 and 3, an embodiment of the present application provides a concrete pouring apparatus for a kerbstone backrest, which includes a pouring truck 100, a hopper 110 disposed on the pouring truck 100, two liftable sliding formworks 120, triangular brackets 130 corresponding to the sliding formworks 120 one by one, and lever pressing plates 140 corresponding to the brackets 130 one by one, a cross section of the sliding formworks 120 is L-shaped, the two brackets 130 are respectively connected to the pouring truck 100 and configured to be movable in a width direction of the pouring truck 100, two sides of the pouring truck 100 are respectively provided with two fixing holes 240 extending in the width direction, each fixing hole 240 is connected to a connecting bolt 250 slidably penetrating through the fixing hole, and a bottom edge of each bracket 130 is connected to two connecting bolts 250 located on one side of the pouring truck 100 through corresponding nuts.
The lever pressing plate 140 is located above the corresponding support 130, one end of the lever pressing plate is hinged to the vertex angle of the corresponding support 130, the other end of the lever pressing plate 140 is connected with the balancing weight 220, the sliding template 120 is located below the corresponding support 130, the top of the sliding template is connected with the bottom of the corresponding lever pressing plate 140 through the two pressing springs 160 which penetrate through the corresponding support 130 in a sliding mode, the lever pressing plate 140 drives the corresponding sliding template 120 to ascend and descend through the pressing springs 160 when rotating along a vertical plane, each support 130 is connected with a locking assembly used for locking or unlocking the corresponding pressing springs 160, and the locking assembly comprises a bolt 210 which can be inserted into or separated from the support 130 and the corresponding pressing springs 160 along axial movement. Two telescopic gas spring support rods 230 are connected between the two sliding formworks 120, and a traction steel wire rope 150 is connected between each of two sides of the pouring truck 100 and the two sliding formworks 120. The bottom of the hopper 110 and the two sliding formworks 120 are respectively communicated through concrete conduits 180, and screw pumps 190 for delivering concrete to the two concrete conduits 180 are respectively arranged in the hopper 110. When the pouring truck 100 moves along the separation band 310 between the two curbstones 300, the two sliding formworks 120 respectively enclose one side adjacent to the two curbstones 300 and the ground to form a pouring cavity 170 with two open ends; a vibrator 200 is attached to an outer wall of each of the sliding formworks 120.
When the device for pouring the concrete of the back of the curbstone is used, the pouring truck 100 is moved into the partition strip 310 between the two curbstones 300, then the positions of the four connecting bolts 250 are moved along the four fixing holes 240 of the pouring truck 100, the two brackets 130 connected by the four connecting bolts 250 are respectively moved to the positions right above the back concrete to be poured of the two curbstones 300, then the two brackets 130 are fixed on the pouring truck 100 by the four connecting bolts 250 and corresponding nuts, then the bolt 210 connected by the two brackets 130 is pulled out, the position of the push-down spring 160 is stopped being locked by the bolt 210, at this time, the two lever pressing plates 140 are rotated along the vertical plane by the weight of the end-connected counterweight block 220, the two lever pressing plates 140 are lowered to the preset positions at the sides of the two curbstones 300 through the two sliding templates 120 connected by the push-down spring 160, then the bolt 210 is inserted into the two brackets 130 and the corresponding push-down springs 160 again, the bolt 210 is used for locking the position of the lower pressing spring 160 so as to fix the heights of the lower pressing spring 160 and the sliding template 120, then the length of the two gas spring support rods 230 is adjusted so as to adjust the distance between the two sliding templates 120, so that the two sliding templates 120 are respectively attached to the adjacent sides of the two curbstones 300, so that the two sliding templates 120 respectively enclose the adjacent sides of the two curbstones 300 and the ground to form a casting cavity 170 with two open ends, at this time, the concrete tanker can be driven to a position parallel to the casting truck 100, an elongated chute is arranged on the concrete tanker to directly unload the concrete into the hopper 110 on the casting truck 100, the screw pump 190 is started to respectively introduce the concrete in the hopper 110 into the two casting cavities 170 through the two concrete conduits 180 for casting, the vibrator 200 connected with the sliding templates 120 is used for rapping and tamping the concrete, and the casting truck 100 is controlled to move along the length direction of the separating belt 310, and after the pouring operation of one section of the division belt 310 is finished, the screw pump 190 and the vibrator 200 are closed, the bolt 210 is pulled out, the bolt 210 is stopped to lock the position of the lower pressing spring 160, the lever pressing plate 140 is lifted, the lower pressing spring 160 connected to the bottom of the lever pressing plate 140 drives the two sliding formworks 120 to ascend and move to the position above the top surface of the kerbstone 300, then the bolt 210 is reinserted to lock the position of the lower pressing spring 160 to prevent the sliding formworks 120 from descending, and the pouring truck 100 is driven to the next section of the division belt 310 to repeat the above steps, so that the pouring of the concrete for the back of the kerbstone of the division belt 310 can be finished.
Wherein, the both sides of the pouring truck 100 are connected with the traction wire rope 150 respectively with between two sliding template 120, can utilize the position of two sliding template 120 of traction wire rope 150 elasticity injecing, avoid the slight off normal of pouring truck 100 to drive sliding template 120 extrusion and collision kerbstone 300, avoid causing kerbstone 300 off normal to influence the going on of pouring operation.
The embodiments described above are some, but not all embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Claims (8)
1. The utility model provides a curbstone back concrete placement device, its characterized in that, it includes can follow the pouring truck that the median removed between two curbstones, locate hopper, two liftable sliding template on the pouring truck and with sliding template one-to-one's support and lever clamp plate, two the support connect respectively in the pouring truck and be configured into can follow the width direction of pouring truck removes, the one end of lever clamp plate with correspond the support is articulated, the bottom of lever clamp plate passes through at least one and slides and corresponds the spring pushes down of support with correspond the sliding template top is connected, lever clamp plate is configured into and can be followed vertical plane and rotate and pass through the spring pushes down drives and correspond the sliding template goes up and down, the support is connected with and is used for locking or unblock to correspond the locking subassembly of spring pushes down, two sliding template encloses with the adjacent one side of two curbstones and ground respectively and forms the pouring of both ends open-ended And the bottom of the hopper is communicated with the two sliding templates through concrete conduits respectively.
2. The kerbstone back concrete casting apparatus of claim 1, wherein a screw pump is provided within the hopper for delivering concrete to the concrete pipe.
3. A kerbstone back concrete pour apparatus of claim 1, wherein a vibrator is coupled to the slip form.
4. The kerbstone back concrete casting apparatus of claim 1, wherein the locking assembly includes a latch that is axially movable to insert and remove the bracket and the corresponding hold-down spring.
5. The kerbstone back concrete pouring apparatus of claim 1, wherein an end of the lever arm press plate remote from the bracket is connected with a counterweight.
6. A kerbstone back concrete pour apparatus in accordance with claim 1, wherein at least one retractable gas spring support rod is connected between the two slip forms.
7. The kerbstone back concrete casting apparatus of claim 1, wherein the casting truck is provided at both sides thereof with at least two fixing holes extending in a width direction thereof, each of the fixing holes being connected with a connection bolt slidably passing therethrough, and the bracket is connected with each of the connection bolts at one side of the casting truck.
8. The kerbstone back concrete pouring apparatus of claim 1, wherein a tow wire rope is connected between both sides of the pouring truck and the two slip forms, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210671636.3A CN114960345A (en) | 2022-06-14 | 2022-06-14 | Curb stone back concrete placement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210671636.3A CN114960345A (en) | 2022-06-14 | 2022-06-14 | Curb stone back concrete placement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114960345A true CN114960345A (en) | 2022-08-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210671636.3A Pending CN114960345A (en) | 2022-06-14 | 2022-06-14 | Curb stone back concrete placement device |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| ES1064261U (en) * | 2006-12-04 | 2007-02-16 | Sacyr, S.A.U. | Device for making concrete gutters by slipform. (Machine-translation by Google Translate, not legally binding) |
| US7182309B1 (en) * | 2004-08-26 | 2007-02-27 | Olsen Bret R | Concrete curbing forming device |
| KR100758356B1 (en) * | 2006-09-27 | 2007-09-14 | 전형식 | Boundary stone establishing structure and method |
| FR3043417A1 (en) * | 2015-11-10 | 2017-05-12 | Chapsol | PREFABRICATED FRAME ELEMENT AND METHOD FOR MANUFACTURING SUCH FRAMEWORK |
| CN109930455A (en) * | 2019-04-30 | 2019-06-25 | 山西建设投资集团有限公司 | A kind of town road kerbstone mounting structure and constructing device and construction method |
| EP3597385A1 (en) * | 2018-07-20 | 2020-01-22 | Kvm Industrimaskiner A/S | Mould for concrete blocks with (large) level differences, such as kerbstones/blocks/lock stones with or without cavities/drain |
| CN211645845U (en) * | 2018-12-10 | 2020-10-09 | 杭州江润科技有限公司 | Dew stone concrete pavement pours template system |
| CN113737613A (en) * | 2021-09-22 | 2021-12-03 | 江苏城东建设工程有限公司 | Efficient construction method for plain concrete behind road dental stone |
| CN215594963U (en) * | 2021-04-21 | 2022-01-21 | 中国建筑一局(集团)有限公司 | Device is pour to back ash concrete around curb |
| CN114214898A (en) * | 2021-12-31 | 2022-03-22 | 郑州第二市政建设集团有限公司 | Concrete pouring equipment for back of road kerbstone |
| CN216156309U (en) * | 2021-08-17 | 2022-04-01 | 中建八局第一建设有限公司 | Curb back construction equipment |
| CN114294015A (en) * | 2021-12-28 | 2022-04-08 | 中铁二十二局集团第四工程有限公司 | Intelligent positioning template hydraulic trolley for loess tunnel VI-level surrounding rock double-layer lining construction |
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2022
- 2022-06-14 CN CN202210671636.3A patent/CN114960345A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7182309B1 (en) * | 2004-08-26 | 2007-02-27 | Olsen Bret R | Concrete curbing forming device |
| KR100758356B1 (en) * | 2006-09-27 | 2007-09-14 | 전형식 | Boundary stone establishing structure and method |
| ES1064261U (en) * | 2006-12-04 | 2007-02-16 | Sacyr, S.A.U. | Device for making concrete gutters by slipform. (Machine-translation by Google Translate, not legally binding) |
| FR3043417A1 (en) * | 2015-11-10 | 2017-05-12 | Chapsol | PREFABRICATED FRAME ELEMENT AND METHOD FOR MANUFACTURING SUCH FRAMEWORK |
| EP3597385A1 (en) * | 2018-07-20 | 2020-01-22 | Kvm Industrimaskiner A/S | Mould for concrete blocks with (large) level differences, such as kerbstones/blocks/lock stones with or without cavities/drain |
| CN211645845U (en) * | 2018-12-10 | 2020-10-09 | 杭州江润科技有限公司 | Dew stone concrete pavement pours template system |
| CN109930455A (en) * | 2019-04-30 | 2019-06-25 | 山西建设投资集团有限公司 | A kind of town road kerbstone mounting structure and constructing device and construction method |
| CN215594963U (en) * | 2021-04-21 | 2022-01-21 | 中国建筑一局(集团)有限公司 | Device is pour to back ash concrete around curb |
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| CN113737613A (en) * | 2021-09-22 | 2021-12-03 | 江苏城东建设工程有限公司 | Efficient construction method for plain concrete behind road dental stone |
| CN114294015A (en) * | 2021-12-28 | 2022-04-08 | 中铁二十二局集团第四工程有限公司 | Intelligent positioning template hydraulic trolley for loess tunnel VI-level surrounding rock double-layer lining construction |
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