CN111794066A - Lifting hole plugging device for fabricated road and construction method thereof - Google Patents

Lifting hole plugging device for fabricated road and construction method thereof Download PDF

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Publication number
CN111794066A
CN111794066A CN202010644678.9A CN202010644678A CN111794066A CN 111794066 A CN111794066 A CN 111794066A CN 202010644678 A CN202010644678 A CN 202010644678A CN 111794066 A CN111794066 A CN 111794066A
Authority
CN
China
Prior art keywords
sleeve
cover plate
road
adjusting opening
rod
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.)
Pending
Application number
CN202010644678.9A
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Chinese (zh)
Inventor
李渊儒
安昌侯
赵朋怀
赵趯
付雪松
付宏伟
陈宝玉
吕安东
武权
陈曦
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China Construction Eighth Engineering Division Co Ltd
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China Construction Eighth Engineering Division Co Ltd
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Filing date
Publication date
Application filed by China Construction Eighth Engineering Division Co Ltd filed Critical China Construction Eighth Engineering Division Co Ltd
Priority to CN202010644678.9A priority Critical patent/CN111794066A/en
Publication of CN111794066A publication Critical patent/CN111794066A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/06Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
    • E01C23/09Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges
    • E01C23/0966Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for filling or priming, with or without working the surface of the filling or applying particulate material thereto, e.g. for filling the joints of stone-sett paving
    • E01C23/0986Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for filling or priming, with or without working the surface of the filling or applying particulate material thereto, e.g. for filling the joints of stone-sett paving with preformed elements, e.g. joint strips

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)

Abstract

The invention relates to a lifting hole plugging device of an assembly type road and a construction method thereof, wherein the device comprises: the lifting hook is embedded in the road plate, a lifting hole for connecting a lifting hook is formed in the sleeve, and a limiting groove transversely communicated with the lifting hole is formed in the side wall of the sleeve; the cover plate is covered at the top end of the sleeve and is provided with a strip-shaped adjusting opening; the fastening piece is connected to the cover plate and arranged in the adjusting opening in a sliding mode, the fastening piece comprises a limiting rod matched with the limiting groove, and the limiting rod is inserted into the limiting groove to fasten the cover plate to the sleeve. According to the invention, the lifting holes are formed on the pre-buried sleeve in the road plate, the cover plate is pulled on the sleeve by the fastening piece, the limiting rod of the fastening piece is inserted into the limiting groove of the sleeve for fixing, so that the lifting holes are blocked, and the problem that the rubber plug is easy to fall off is solved.

Description

Lifting hole plugging device for fabricated road and construction method thereof
Technical Field
The invention relates to the field of building construction, in particular to a lifting hole plugging device of an assembly type road and a construction method thereof.
Background
The assembled road is used as a reusable temporary road, a plurality of projects can be turned over, and the waste of building resources is reduced. During the process of processing and prefabricating the fabricated road, a lifting point can be reserved on the road board for later transportation, lifting and construction. After the road slab to be hoisted is paved, the hoisting point is plugged by the rubber plug, but the use of the road is influenced due to the fact that more vehicles come and go and the problem that the rubber plug is separated from the hoisting point exists.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a lifting hole plugging device for an assembly type road and a construction method thereof, and solves the problem that a lifting point is plugged by a rubber plug in the prior art, and the rubber plug is easy to fall off.
The technical scheme for realizing the purpose is as follows:
the invention provides a lifting hole plugging device of an assembly type road, which comprises:
the lifting hook is characterized by comprising a hollow sleeve which is vertically communicated and embedded in the road board, a lifting hole for connecting a lifting hook is formed in the sleeve, and a limiting groove which is transversely communicated with the lifting hole is formed in the side wall of the sleeve;
the cover plate is covered at the top end of the sleeve and provided with a long-strip-shaped adjusting opening; and
the fastening piece is connected to the cover plate and arranged in the adjusting opening in a sliding mode, the fastening piece comprises a limiting rod matched with the limiting groove, and the cover plate is fastened on the sleeve by inserting the limiting rod into the limiting groove.
The suspension hole plugging device of the fabricated road is further improved in that the fastener comprises:
the pull rod is vertically inserted into the adjusting opening;
the two ends of the stop lever are abutted against the two sides of the cover plate corresponding to the adjusting opening;
the limiting rod is vertically fixed at the bottom end of the pull rod; and
when the cover plate is covered on the sleeve, the direction of the adjusting opening of the cover plate is consistent with the direction of the limiting groove of the sleeve, the pull rod is driven by the stop lever to move along the adjusting opening, so that the limiting rod is driven to move to be inserted into the limiting groove, and the cover plate is covered on the sleeve in a pulling mode.
The lifting hole plugging device for the fabricated road is further improved in that the cover plate is provided with support ends for supporting the stop lever at two opposite edges of the adjusting opening, and the support ends are lower than the top surface of the road plate.
The assembly type road lifting hole plugging device is further improved in that at least one clamping groove matched with the stop lever is formed at the supporting end, and the stop lever is limited by the stop lever arranged in the clamping groove.
The fabricated road lifting hole plugging device is further improved in that the fabricated road lifting hole plugging device further comprises a sealing plate strip which is arranged on the supporting end and covers the adjusting opening, the top surface of the sealing plate strip is flush with the top surface of the cover plate, and the top surface of the cover plate is flush with the top surface of the road plate.
The invention also provides a construction method of the lifting hole plugging device of the fabricated road, which comprises the following steps:
providing a hollow sleeve which is vertically communicated, pre-burying the sleeve in a road board, forming a lifting hole for connecting a lifting hook in the sleeve, and forming a limiting groove which is transversely communicated with the lifting hole on the side wall of the sleeve;
providing a cover plate which is matched with the sleeve, wherein the cover plate is provided with a long-strip-shaped adjusting opening, and the cover plate is covered at the top end of the sleeve; and
and providing a fastener, connecting the fastener to the cover plate and slidably arranging the fastener at the adjusting opening, wherein the fastener comprises a limiting rod which is matched with the limiting groove, and inserting the limiting rod into the limiting groove so as to fasten the cover plate on the sleeve.
The construction method of the fabricated road lifting hole plugging device is further improved in that the fastener comprises the following steps:
providing a pull rod, and vertically inserting the pull rod into the adjusting opening;
providing a stop lever, vertically fixing the stop lever on the top end of the pull rod, and enabling two ends of the stop lever to abut against two sides, corresponding to the adjusting opening, of the cover plate;
providing a limiting rod, and vertically fixing the limiting rod at the bottom end of the pull rod;
when the cover plate is covered on the sleeve, the direction of the adjusting opening of the cover plate is consistent with the direction of the limiting groove of the sleeve; and
the stop lever is utilized to drive the pull rod to move along the adjusting opening so as to drive the limiting rod to move to be inserted into the limiting groove, and the cover plate is arranged on the sleeve in a pulling covering mode.
The construction method of the fabricated road lifting hole plugging device is further improved in that support ends are formed on two opposite edges of the cover plate at the adjusting opening, and the support ends are lower than the top surface of the road plate;
and transversely placing the stop lever on the supporting end, wherein the direction of the stop lever is perpendicular to the direction of the adjusting opening.
The construction method of the fabricated road lifting hole plugging device is further improved in that at least one clamping groove which is matched with the stop lever is formed at the supporting end,
and the stop lever is arranged in the clamping groove to limit the stop lever.
The construction method of the fabricated road lifting hole plugging device is further improved in that the fabricated road lifting hole plugging device further comprises a sealing plate strip, the sealing plate strip is arranged on the supporting end to cover the adjusting opening, the top surface of the sealing plate strip is flush with the top surface of the cover plate, and the top surface of the cover plate is flush with the top surface of the road plate.
The hoisting hole plugging device of the fabricated road and the construction method thereof have the beneficial effects that:
according to the invention, the lifting holes are formed on the pre-buried sleeve in the road plate, the cover plate is pulled on the sleeve by the fasteners, the limiting rods of the fasteners are inserted into the limiting grooves of the sleeve for fixing, so that the lifting holes are blocked, the lifting holes are prevented from being blocked, and the problem that the lifting points are blocked by rubber plugs and the rubber plugs are easy to fall off in the prior art is solved. And adopt the fixed apron of fastener, be difficult to drop, easy to assemble and dismantlement can have enough to meet the need the use.
Drawings
Fig. 1 to 3 are schematic diagrams illustrating construction steps of the fabricated road lifting hole plugging device of the invention.
Fig. 4 is an installation schematic diagram of the suspension hole plugging device and the road plate of the fabricated road of the invention.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to fig. 1 to 3, there are shown schematic construction steps of the fabricated road suspension hole plugging device of the present invention. Fig. 4 is an installation schematic diagram of the suspension hole plugging device and the road plate of the fabricated road of the invention. Referring to fig. 1 to 4, the fabricated device for blocking a suspension hole of a road according to the present invention includes:
the inner part of the sleeve 20 is hollow and is communicated up and down, the sleeve 20 is embedded in the road plate 10, a lifting hole for connecting a lifting hook is formed in the sleeve 20, and a limiting groove 21 transversely communicated with the lifting hole is formed in the side wall of the sleeve 20;
the cover plate 30 is covered on the top end of the sleeve 20, and the cover plate 30 is provided with a strip-shaped adjusting opening;
and the fastening piece 40 is connected to the cover plate 30 and slidably arranged in the adjusting opening, the fastening piece 40 comprises a limiting rod 41 which is matched with the limiting groove 21, and the cover plate 30 is fastened on the sleeve 20 by inserting the limiting rod 41 into the limiting groove 21.
Further, a rubber pad is attached and fixed to the bottom surface of the cover plate 30. The rubber pad and the cover plate 30 are fixed by adhesion. When the cover plate 30 is covered on the top end of the sleeve 20, the rubber pad increases the friction force with the sleeve 20, and the cover plate 30 is prevented from slipping off.
The sleeve 20 is a circular tube, and the cover plate 30 is a circular plate adapted to the diameter of the sleeve 20.
As a preferred embodiment of the fabricated road suspension hole plugging device of the present invention, the fastening member comprises 40: a pull rod 42 vertically inserted into the adjusting opening; a stop lever 43 vertically fixed on the top end of the pull rod 42, wherein two ends of the stop lever 43 are abutted against two sides of the cover plate 30 corresponding to the adjusting opening; a limiting rod 41 vertically fixed at the bottom end of the pull rod 42; when the cover plate 30 is covered on the sleeve 20, the direction of the adjusting opening of the cover plate 30 is consistent with the direction of the limiting groove 21 of the sleeve 20, the pull rod 42 is driven by the stop lever 43 to move along the adjusting opening, so that the limiting rod 41 is driven to move to be inserted into the limiting groove 21, and the cover plate 30 is covered on the sleeve 20 in a pulling mode.
Further, the length of the pull rod 42 is the vertical distance between the adjusting opening and the limiting groove 21. The pull rod 42, the stop lever 43 and the limiting rod 41 are connected into an I-shaped structure, and the stop lever 43 and the limiting rod 41 are located in different planes.
As a preferred embodiment of the fabricated road lifting hole plugging device of the present invention, when the direction of the adjustment opening of the cover plate 30 is the same as the direction of the limit groove 21 of the sleeve 20, the direction of the limit rod 41 is the same as the direction of the limit groove 21, and the stop rod 43 is perpendicular to the direction of the adjustment opening, so that the stop rod 43 is stopped on the cover plate 30 to hang the pull rod 42 under the cover plate 30. The stopper rod 41 is inserted into the stopper groove 21 by pressing the stopper rod 43 against the cover plate 30, so that the stopper rod 43, the stopper rod 41 and the pull rod 42 pull and press the cover plate 30 against the sleeve 20.
As a preferred embodiment of the fabricated road suspension hole blocking device of the present invention, the cover plate 30 is formed with support ends 31 for supporting the blocking rods 43 at opposite edges of the adjustment opening, and the support ends 31 are lower than the top surface of the road plate 10. By supporting the blocking rod 43 on the pair of supporting ends 31 at both sides of the adjusting opening, the top surface of the blocking rod 43 is ensured not to be higher than the top surface of the cover plate 30 because the supporting ends 31 are lower than the top surface of the road plate 10.
As a preferred embodiment of the fabricated device for blocking a manhole of a road according to the present invention, the supporting end 31 is formed with at least one engaging groove 32 adapted to the blocking rod 43, and the blocking rod is disposed in the engaging groove 32 to limit the blocking rod 43.
The clamping groove 32 is an arc surface for supporting and limiting the stop lever 43, and the stop lever 43 is prevented from rolling. In this embodiment, two card slots 32 are provided.
As a preferred embodiment of the fabricated road manhole sealing device of the present invention, the present invention further comprises a sealing strip disposed on the supporting end 31 and covering the adjustment opening, wherein a top surface of the sealing strip is flush with a top surface of the cover plate 30, and a top surface of the cover plate 30 is flush with a top surface of the road plate 10.
After the cover plate is fixed on the sleeve through the fastener, the closing plate strip is adopted to cover the adjusting opening, so that the lifting hole is further blocked, and the blockage is prevented.
The invention also provides a construction method of the lifting hole plugging device of the fabricated road, which comprises the following steps:
providing a hollow sleeve 20 which is vertically through, embedding the sleeve 20 in the road plate 10, forming a lifting hole for connecting a lifting hook in the sleeve 20, and forming a limiting groove 21 which is transversely communicated with the lifting hole on the side wall of the sleeve 20;
providing a cover plate 30 adapted to the sleeve 20, wherein the cover plate 30 is provided with a strip-shaped adjusting opening, and the cover plate 30 is arranged at the top end of the sleeve 20 in a covering manner; and
and providing a fastening member 40, connecting the fastening member 40 to the cover plate 30 and slidably arranging the fastening member 40 in the adjustment opening, wherein the fastening member 40 comprises a limiting rod 41 which is adapted to the limiting groove 21, and inserting the limiting rod 41 into the limiting groove 21 so as to fasten the cover plate 30 to the sleeve 20.
As a preferred embodiment of the construction method of the fabricated road suspension hole plugging device of the present invention, there is provided a fastener 40 comprising: providing a pull rod 42, and vertically inserting the pull rod 42 into the adjusting opening; providing a stop lever 43, vertically fixing the stop lever 43 on the top end of the pull rod 42, and abutting two ends of the stop lever 43 against two sides of the cover plate 30 corresponding to the adjusting opening; providing a limiting rod 41, and vertically fixing the limiting rod 41 at the bottom end of the pull rod 42; when the cover plate 30 is covered on the sleeve 20, the direction of the adjusting opening of the cover plate 30 is consistent with the direction of the limiting groove 21 of the sleeve 20; and the stop lever 43 is used for driving the pull rod 42 to move along the adjusting opening so as to drive the limiting rod 41 to move to be inserted into the limiting groove 21, so that the cover plate 30 is pulled and covered on the sleeve 20.
As a preferred embodiment of the construction method of the fabricated road suspension hole plugging device of the present invention, the method further comprises forming support ends at two opposite edges of the cover plate 30 at the adjustment opening, wherein the support ends 31 are lower than the top surface of the road plate 10; the blocking lever 43 is placed transversely on the support end 31 with the direction of the blocking lever 43 perpendicular to the direction of the adjustment opening.
As a preferred embodiment of the construction method of the fabricated road suspension hole blocking device of the present invention, the method further comprises forming at least one engaging groove 32 adapted to the blocking rod 43 at the supporting end 31, and disposing the blocking rod 43 in the engaging groove 32 to limit the blocking rod 43.
As a preferred embodiment of the construction method of the fabricated road suspension hole plugging device of the present invention, the method further comprises providing a sealing strip, the sealing strip is disposed on the support end 31 to cover the adjustment opening, the top surface of the sealing strip is flush with the top surface of the cover plate 30, and the top surface of the cover plate 30 is flush with the top surface of the road plate 10.
The hoisting hole plugging device of the fabricated road and the construction method thereof have the beneficial effects that:
according to the invention, the lifting holes are formed on the pre-buried sleeve in the road plate, the cover plate is pulled on the sleeve by the fasteners, the limiting rods of the fasteners are inserted into the limiting grooves of the sleeve for fixing, so that the lifting holes are blocked, the lifting holes are prevented from being blocked, and the problem that the lifting points are blocked by rubber plugs and the rubber plugs are easy to fall off in the prior art is solved. And adopt the fixed apron of fastener, be difficult to drop, easy to assemble and dismantlement can have enough to meet the need the use.
While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.

Claims (10)

1. A hanging hole plugging device of assembled road, its characterized in that includes:
the lifting hook is characterized by comprising a hollow sleeve which is vertically communicated and embedded in the road board, a lifting hole for connecting a lifting hook is formed in the sleeve, and a limiting groove which is transversely communicated with the lifting hole is formed in the side wall of the sleeve;
the cover plate is covered at the top end of the sleeve and provided with a long-strip-shaped adjusting opening; and
the fastening piece is connected to the cover plate and arranged in the adjusting opening in a sliding mode, the fastening piece comprises a limiting rod matched with the limiting groove, and the cover plate is fastened on the sleeve by inserting the limiting rod into the limiting groove.
2. The fabricated road lifting hole blocking device of claim 1, wherein the fastening member comprises:
the pull rod is vertically inserted into the adjusting opening;
the two ends of the stop lever are abutted against the two sides of the cover plate corresponding to the adjusting opening;
the limiting rod is vertically fixed at the bottom end of the pull rod; and
when the cover plate is covered on the sleeve, the direction of the adjusting opening of the cover plate is consistent with the direction of the limiting groove of the sleeve, the pull rod is driven by the stop lever to move along the adjusting opening, so that the limiting rod is driven to move to be inserted into the limiting groove, and the cover plate is covered on the sleeve in a pulling mode.
3. The fabricated road lifting hole plugging device of claim 2, wherein the cover plate is formed with support ends for supporting the blocking rods at opposite edges of the adjustment opening, and the support ends are lower than the top surface of the road plate.
4. The fabricated road lifting hole plugging device of claim 3, wherein the supporting end is formed with at least one locking groove adapted to the blocking rod, and the blocking rod is disposed in the locking groove to limit the blocking rod.
5. The fabricated roadway drawhole plugging apparatus of claim 3, further comprising a sealing strip disposed on said support end and covering said adjustment opening, wherein a top surface of said sealing strip is flush with a top surface of said cover plate, and a top surface of said cover plate is flush with a top surface of said roadway plate.
6. A construction method of a lifting hole plugging device of an assembly type road is characterized by comprising the following steps:
providing a hollow sleeve which is vertically communicated, pre-burying the sleeve in a road board, forming a lifting hole for connecting a lifting hook in the sleeve, and forming a limiting groove which is transversely communicated with the lifting hole on the side wall of the sleeve;
providing a cover plate which is matched with the sleeve, wherein the cover plate is provided with a long-strip-shaped adjusting opening, and the cover plate is covered at the top end of the sleeve; and
and providing a fastener, connecting the fastener to the cover plate and slidably arranging the fastener at the adjusting opening, wherein the fastener comprises a limiting rod which is matched with the limiting groove, and inserting the limiting rod into the limiting groove so as to fasten the cover plate on the sleeve.
7. The construction method of the fabricated road suspension hole blocking device of claim 6, wherein the providing of the fastening member comprises:
providing a pull rod, and vertically inserting the pull rod into the adjusting opening;
providing a stop lever, vertically fixing the stop lever on the top end of the pull rod, and enabling two ends of the stop lever to abut against two sides, corresponding to the adjusting opening, of the cover plate;
providing a limiting rod, and vertically fixing the limiting rod at the bottom end of the pull rod;
when the cover plate is covered on the sleeve, the direction of the adjusting opening of the cover plate is consistent with the direction of the limiting groove of the sleeve; and
the stop lever is utilized to drive the pull rod to move along the adjusting opening so as to drive the limiting rod to move to be inserted into the limiting groove, and the cover plate is arranged on the sleeve in a pulling covering mode.
8. The construction method of the fabricated road lifting hole plugging device of claim 7, further comprising forming support ends at two opposite edges of the adjusting opening of the cover plate, wherein the support ends are lower than the top surface of the road plate;
and transversely placing the stop lever on the supporting end, wherein the direction of the stop lever is perpendicular to the direction of the adjusting opening.
9. The construction method of a fabricated road lifting hole plugging device according to claim 8, further comprising forming at least one catching groove adapted to the stopper at the supporting end,
and the stop lever is arranged in the clamping groove to limit the stop lever.
10. The method of constructing an assembly-type roadway suspension hole plugging device of claim 8, further comprising providing a sealing strip, wherein said sealing strip is provided on said support end to cover said adjustment opening, wherein a top surface of said sealing strip is flush with a top surface of said cap plate, and wherein a top surface of said cap plate is flush with a top surface of said roadway plate.
CN202010644678.9A 2020-07-07 2020-07-07 Lifting hole plugging device for fabricated road and construction method thereof Pending CN111794066A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010644678.9A CN111794066A (en) 2020-07-07 2020-07-07 Lifting hole plugging device for fabricated road and construction method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010644678.9A CN111794066A (en) 2020-07-07 2020-07-07 Lifting hole plugging device for fabricated road and construction method thereof

Publications (1)

Publication Number Publication Date
CN111794066A true CN111794066A (en) 2020-10-20

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CN202010644678.9A Pending CN111794066A (en) 2020-07-07 2020-07-07 Lifting hole plugging device for fabricated road and construction method thereof

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204875424U (en) * 2015-07-09 2015-12-16 曹志欢 Location and lewis hole of town road construction usefulness shield ware
CN105421188A (en) * 2015-11-25 2016-03-23 中冶天工集团有限公司 Construction method of assembly type temporary road
CN208777106U (en) * 2018-07-26 2019-04-23 广州坚磊建设有限公司 Assembled temporary road plate
CN110552418A (en) * 2019-09-26 2019-12-10 山东省水利科学研究院 novel anti-displacement safety inspection well cover
CN210315679U (en) * 2019-06-10 2020-04-14 李树元 A prefabricated component articulated mounting for municipal transportation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204875424U (en) * 2015-07-09 2015-12-16 曹志欢 Location and lewis hole of town road construction usefulness shield ware
CN105421188A (en) * 2015-11-25 2016-03-23 中冶天工集团有限公司 Construction method of assembly type temporary road
CN208777106U (en) * 2018-07-26 2019-04-23 广州坚磊建设有限公司 Assembled temporary road plate
CN210315679U (en) * 2019-06-10 2020-04-14 李树元 A prefabricated component articulated mounting for municipal transportation
CN110552418A (en) * 2019-09-26 2019-12-10 山东省水利科学研究院 novel anti-displacement safety inspection well cover

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