CN116695786A - Cover plate structure for cable trench - Google Patents
Cover plate structure for cable trench Download PDFInfo
- Publication number
- CN116695786A CN116695786A CN202310703096.7A CN202310703096A CN116695786A CN 116695786 A CN116695786 A CN 116695786A CN 202310703096 A CN202310703096 A CN 202310703096A CN 116695786 A CN116695786 A CN 116695786A
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- cover plate
- plate
- cable
- wall
- cover
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 7
- 238000012423 maintenance Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000005520 cutting process Methods 0.000 description 6
- 230000000149 penetrating effect Effects 0.000 description 5
- 210000001503 joint Anatomy 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000000805 composite resin Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/02—Installations of electric cables or lines in or on the ground or water laid directly in or on the ground, river-bed or sea-bottom; Coverings therefor, e.g. tile
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
- E02D29/1427—Locking devices
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
- E02D29/1454—Non-circular covers, e.g. hexagonal, elliptic
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Environmental & Geological Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The invention provides a cover plate structure for a cable trench, which is arranged on a cable trench body and comprises a first cover plate, a second cover plate and a third cover plate which are sequentially connected in a lap joint mode, wherein lap joint plates are respectively arranged on two sides of the second cover plate, drainage structures are arranged on two sides of the third cover plate, and the lap joint plates are positioned in the drainage structures and are abutted against the side walls of the drainage structures, so that the second cover plate can cover the drainage structures. The cover plate structure for the cable pit can quickly disassemble and assemble the second cover plate without completely disassembling all the cover plates during maintenance, and is simple and convenient to operate; simultaneously, the first cover plate is ensured to be paved in the same direction, and the whole appearance is attractive.
Description
Technical Field
The invention relates to the technical field of cable trenches, in particular to a cover plate structure for a cable trench.
Background
The cable trench is an underground pipeline for laying and replacing electric power or telecommunication cable facilities, is also an enclosure structure of the laid cable facilities, and has pipeline structure forms such as rectangle, circle, arch and the like; a cover plate is usually provided over the cable pit to provide good protection for the cables inside.
The cable trench cover plate is generally made of reinforced concrete, cast iron, resin matrix composite materials and the like, wherein the cover plate made of the reinforced concrete can meet the load requirement of pedestrians, but has large volume, heavy weight and difficult construction, is crisp in material, has poor impact resistance and is easy to break corners; the cast iron cover plate is heavy and easy to corrode and rust, is easy to be stolen due to secondary utilization value, and is only suitable for cable trenches in power distribution rooms.
The existing resin-based composite material cover plate is integrally formed by using resin, filler and reinforcing fiber through a compression molding process, and the weight of the existing resin-based composite material cover plate is only 1/3 of that of the reinforced concrete cover plate, so that the existing resin-based composite material cover plate has the advantages of attractive appearance, easiness in construction, insulation, fire resistance and the like; but its goods structure shape often is provided with specific protruding strengthening rib, and inside embeds reinforcing bar, when the spot cutting was processed, has not only destroyed self strengthening rib structure and can also cause the naked hourglass perk of reinforcing bar, has the potential safety hazard. In addition, in order to meet the drainage requirement, a lap joint structure is generally adopted for connection; however, the structure cannot independently open one cover plate, which is not beneficial to maintenance.
In view of this, the present invention has been made.
Disclosure of Invention
The invention solves the problems that the existing cable trench cover plate is unreasonable in structure and is not beneficial to maintenance and daily operation; the invention solves the other problem that the existing cable trench cover plate structure is not easy to cut, overhaul and theft prevention.
In order to solve the problems, the invention provides a cover plate structure for a cable trench, which is arranged on a cable trench body and comprises a first cover plate, a second cover plate and a third cover plate which are sequentially connected in a lap joint mode, wherein lap joint plates are respectively arranged on two sides of the second cover plate, drainage structures are arranged on two sides of the third cover plate, and the lap joint plates are positioned in the drainage structures and are in butt joint with side walls of the drainage structures, so that the second cover plate can cover the drainage structures.
The second cover plate can be arranged as an overhaul plate according to the requirement, and the second cover plate is only directly lifted during overhaul, so that all the cover plates are not required to be completely dismantled, and the operation is simple and convenient; the third cover plate is arranged to adjust the paving direction of the cover plate, so that the second cover plate can be circularly paved at intervals; most rainwater flows out of the cable trench from the surface of the cover plate, and the rainwater permeated into the gap is guided out of the cable trench through the drainage structure, so that the waterproof effect is good. Specifically, if only the second cover plate is laid, the groove structures of the first cover plate are all located under the overlapping eaves on two sides of the second cover plate, so that the directions of the first cover plates on two sides of the second cover plate are opposite. In order to be able to continue to place the second cover plate at the next service point, a third cover plate must be placed in order to adjust the orientation of the first cover plate.
Preferably, the first cover plate, the second cover plate and the third cover plate are prepared through a pultrusion process, no reinforcing steel bars exist in the first cover plate, and the first cover plate is convenient to cut, so that the first cover plate can be cut into the second cover plate and the third cover plate without re-opening a die to prepare the overhauling and anti-theft cover plate. The resin cover plates in the existing market are all of mould pressing structures, and the mould is required to be opened again for overhauling and anti-theft cover plates.
Preferably, a cavity structure is arranged at the bottom of the second cover plate, and the lapping plates are arranged at the left side and the right side of the cavity structure. The setting structure is simple, the appearance is attractive, and the second cover plate is convenient to take down and overhaul. Preferably, the cavity structure is formed by three cavities which are arranged at equal intervals.
Preferably, the drainage structure comprises a first drainage groove and a second drainage groove which are respectively positioned at the left side and the right side of the third cover plate, the third cover plate further comprises a baffle plate which is horizontally arranged, and the baffle plate is positioned above the second drainage groove and is in butt joint with the lapping plate.
The arrangement can limit the position of the adjacent second cover plate, and the shaking of the first cover plate or the third cover plate is avoided. Preferably, the minimum clearance between the baffle and the second water discharge groove is L 3 Wherein L is 3 ＝L 2 . The arrangement can enable the second drainage groove to be abutted against the cavity structure, so that the assembly stability is further improved.
Preferably, the two ends of the first cover plate are respectively provided with a first drainage groove and a lapping plate, a cavity structure is arranged between the lapping plate and the first drainage grooves, at least one side of the cavity structure is provided with an opening, and the cavity structure extends along the length direction of the first drainage grooves and/or the lapping plate.
The arrangement can ensure that rainwater at the joint is drained to the first drainage groove and discharged outside the cable trench through the lapping plate after assembly, thereby playing a good waterproof function; and meanwhile, the mechanical strength of the first cover plate can be improved by utilizing the cavity structure.
Preferably, the first drainage tank comprises a first wall, a second wall and a third wall which are sequentially connected, the free end of the third wall is arranged in an upward inclined mode, and one end, away from the second wall, of the first wall is connected with the first cover plate. This arrangement ensures that the first drainage channel can be at least partially covered by the splice plate, resulting in an overall aesthetic appearance of the cable pit cover plate assembly.
Preferably, the second cover plate is provided with an anti-theft device, and the anti-theft device is used for being fixedly connected with one of the first cover plate, the third cover plate or the cable pit body. The weight of the existing cover plate is heavy, and the existing cover plate can be lifted only by a special tool or tool during maintenance.
Preferably, the anti-theft device comprises an anti-theft bolt, a nut and a gasket are arranged on the anti-theft bolt, the nut and the gasket are respectively positioned at the upper side and the lower side of the second cover plate, and the length of the bolt is L 4 The maximum distance between the nut and the gasket is L 5 The thickness of the second cover plate is L 6 Wherein L is 6 ＜L 5 ＜0.9*L 4 . The device has a simple structure and is convenient to produce and process.
Preferably, the anti-theft device further comprises an angle steel assembled and connected with the cable trench body, the angle steel is provided with a fixing hole, and the anti-theft bolt can be selectively assembled with the fixing hole in a threaded manner. When the anti-theft bolt is installed, the anti-theft bolt is only required to be screwed on the angle steel from the outside, and the anti-theft bolt is not required to be screwed into the cable trench body by hands or other tools, so that the installation is convenient; meanwhile, the cover plate is prevented from being lifted up by penetrating wind in the ditch body, namely the wind pressure is prevented.
Preferably, the cover plate structure for the cable pit further comprises a side plate, wherein the side plate comprises a first plate and a second plate which are prepared by a pultrusion process and are vertically connected, the second plate is bonded or mechanically connected with the upper surface of the first cover plate, and the first plate is abutted with the end part of the first cover plate. The arrangement can form wind degree on the side part of the cover plate structure and has the advantages of light weight, less consumption and the like.
Compared with the prior art, the cover plate structure for the cable trench has the following beneficial effects: 1) The second cover plate can be quickly disassembled and assembled during maintenance, all the cover plates are not required to be completely disassembled, and the operation is simple and convenient; the cover plate structure can be cut at will, so that the cover plate structure can be self-cut into an overhaul cover plate structure; 2) Most of the rainwater flows out of the cable trench from the surface of the cover plate, and the rainwater permeated into the gap is guided out of the cable trench through the drainage structure, so that the waterproof effect is good; 3) The anti-theft device is arranged to prevent theft, and meanwhile, the force is conveniently applied when the anti-theft device is opened for overhauling; 4) The cover plate structure is effectively prevented from being lifted by penetrating wind, the mechanical strength is good, and materials are saved.
Drawings
FIG. 1 is an overall schematic view of a cover plate structure for a cable trench according to an embodiment of the invention;
FIG. 2 is a schematic structural view of a first cover plate according to an embodiment of the invention;
FIG. 3 is a front view of a first cover plate according to an embodiment of the invention;
FIG. 4 is a front view of a second cover plate according to an embodiment of the invention;
FIG. 5 is a front view of a third cover plate according to an embodiment of the present invention;
FIG. 6 is a schematic structural view of an anti-theft device according to an embodiment of the present invention;
FIG. 7 is a schematic view of a side plate according to an embodiment of the present invention;
FIG. 8 is a schematic view of another structure of a side plate according to an embodiment of the present invention;
fig. 9 is a graph of the relationship between the cavity structure and stiffness, weight according to the present invention.
Reference numerals illustrate:
1-a first cover plate; 2-a second cover plate; 3-a third cover plate; 4-a cable trench body; a 5-cavity structure; 6-a first drain tank; 61-a first wall; 62-a second wall; 63-a third wall; 7-a second drain tank; 8-lapping plates; 9-an anti-theft device; 91-an anti-theft bolt; 92-a gasket; 93-nut; 94-angle steel; 10-side plates; 11-a first plate; 111-upper cross bars; 112-lower bars; 113-a plug-in part; 114-positioning columns; 12-a second plate; 13-a third plate; 14-baffle.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. It should be noted that, without conflict, the technical features in the embodiments of the present invention may be combined with each other.
The existing resin-based cable trench cover plate has the advantages of light weight, easiness in construction and the like, and is connected with each other by adopting a lap joint structure to meet the drainage requirement, such as the China patent with the application number 201822028694.6, but the structure cannot be independently opened for maintenance. For this, the applicant proposes the following technical solutions:
example 1
As shown in fig. 1, a cover plate structure for a cable trench is arranged on a cable trench body 4 and comprises a first cover plate 1, a second cover plate 2 and a third cover plate 3 which are sequentially connected in a lap joint mode, wherein lap plates 8 are respectively arranged on two sides of the second cover plate 2, drainage structures are respectively arranged on two sides of the third cover plate 3, and the lap plates 8 are positioned in the drainage structures and are in butt joint with side walls of the drainage structures, so that the second cover plate 2 can cover the drainage structures.
The second cover plate 2 can be arranged as an overhaul plate according to the requirement, and the second cover plate 2 is only directly lifted during overhaul, so that all the cover plates are not required to be completely dismantled, and the operation is simple and convenient; meanwhile, the first cover plate 1 is ensured to be paved in the same direction, and the appearance is attractive; most rainwater flows out of the cable pit body 4 from the surface of the cover plate, and rainwater penetrating into the gaps is guided out of the cable pit body 4 through the drainage structure, so that the waterproof effect is good.
As an example of the present invention, the second cover plate 2 and the third cover plate 3 are formed by cutting the first cover plate 1. The device can be used for cutting according to the required width, and has good applicability to cable ditches of non-integer meters in engineering; in addition, the required cross-section structure can be reserved during cutting, the overall material performance can not be damaged, and the cover plate structure is particularly suitable for cover plate structures prepared by a pultrusion process.
Preferably, the second cover plate 2 is formed by cutting off the first drainage groove 6 from the first cover plate 1, and the whole body is in a T-shaped structure; the third cover plate 3 is formed by cutting off part of the second cover plate 2 from the first cover plate 1, and is of a W-shaped structure as a whole. The first cover plate 1, the second cover plate 2 and the third cover plate 3 are sequentially paved in the initial paving process, then the paving sequence is repeated, for example, nA+B+C is paved for 20-30 m, then the paving is repeated for 20-30 m, and the paving is circularly conducted.
As shown in fig. 2-3, the two ends of the first cover plate 1 are respectively provided with a first drainage groove 6 and a bridging plate 8, a cavity structure 5 is arranged between the bridging plate 8 and the first drainage groove 6, at least one side of the cavity structure 11 is provided with an opening, and the cavity structure 5 extends along the length direction of the first drainage groove 6 and/or the bridging plate 8. The arrangement can ensure that rainwater at the joint is drained to the first drainage groove 6 and discharged outside the cable pit body 4 through the lapping plate 8 after assembly, thereby playing a good waterproof function; at the same time, the mechanical strength of the first cover plate 1 can be increased by means of the cavity structure 5.
Preferably, there are 2-3 hollow structures 5 which are at the same level as the first drain grooves 6. The arrangement can utilize the gravity of the first cover plate 1 to be dispersed by the abutting joint of the cavity structure 5, the first drainage groove 6 and the upper end face of the cable trench body 4, so as to avoid deformation and tilting of the first cover plate. The shape of the cavity structure 5 may be arranged as desired, for example semi-circular, rectangular, triangular, etc. As an example of the invention, the width of the first cover plate, i.e. the laying distance, is 1-2m and the length of the cavity structure 5 is 0.2-0.6m.
As an example of the present invention, the first drain grooves 6 have widths L 1 The minimum distance between the bridging plate 8 and the cavity structure 5 is L 2 Wherein L is 1 ＝L 2 . This arrangement ensures that the splice plate 8 can fit over and completely cover the first drainage channel 6, allowing most of the rainwater to flow directly out of the cable tray body 4 through the upper surface of the first cover plate 1; and a small amount of rainwater can be guided to the outside of the cable trench body 4 along the first drainage groove 6 or the second drainage groove 7 after penetrating along the gap, so that the waterproof effect is good.
The cross section of the first water drainage groove 6 is rectangular, and comprises a first wall 61, a second wall 62 and a third wall 63 which are sequentially connected, the free end of the third wall 63 is obliquely arranged upwards, and one end of the first wall 61 away from the second wall 62 is connected with the first cover plate 1. This arrangement ensures that the first drainage channel 6 can be at least partially covered by the splice plate 8, resulting in an overall aesthetic appearance of the cable duct cover assembly.
Preferably, the vertical heights of the first wall 61 and the third wall 63 are respectively M 1 、M 3 The vertical height of the lap plate 8 is H, wherein 0.5×m 1 ＜M 3 ＜M 3 +H＜M 1 . This arrangement ensures that a gap exists between the assembled splice plate 8 and the third wall 63, and ensures that both ends of the first drain tank 6 communicate with the atmosphere and that the side portions communicate with the atmosphere in the cable tray body 4, with smooth drainage; meanwhile, the first drainage groove 6 can be utilized to limit the lapping plate 8, the structure is simple, and the production and the processing are convenient.
As shown in fig. 4-5, the bottom of the second cover plate 2 is provided with a cavity structure 5, and the lap plates 8 are symmetrically arranged at the left side and the right side of the cavity structure 5. The setting structure is simple, the appearance is attractive, and the second cover plate 2 is convenient to take down and overhaul. Preferably, the cavity structures 5 are arranged in three and equidistant ways.
The drainage structure comprises a first drainage groove 6 and a second drainage groove 7, the first drainage groove 6 and the second drainage groove 7 are respectively positioned at the left side and the right side of the third cover plate 3, the third cover plate 3 further comprises a baffle 14 which is horizontally arranged, and the baffle 14 is positioned above the second drainage groove 7 and is in butt joint with the lapping plate 8. This arrangement can limit the position of the adjacent second cover plate 2, avoiding shaking between the two. Preferably, the minimum clearance between the baffle 14 and the second drain tank 7 is L 3 Wherein L is 3 ＝L 2 . This arrangement enables the second drainage channel 7 to be in abutment with the cavity structure 5, further improving the stability of the assembly.
As shown in fig. 6, the second cover plate 2 is provided with an anti-theft device 9, and the anti-theft device 9 is used for being fixedly connected with one of the first cover plate 1, the third cover plate 3 or the cable pit body 4. As shown in fig. 5, the anti-theft device 9 includes an anti-theft bolt 91, a nut 93 and a washer 92 are disposed on the anti-theft bolt 91, the nut 93 and the washer 92 are respectively disposed on the upper and lower sides of the second cover plate 2, and the length of the bolt is L 4 The maximum distance of the nut 93 from the spacer 92 is L 5 The thickness of the second cover plate 2 is L 6 Wherein L is 6 ＜L 5 ＜0.9*L 4 。
After the anti-theft bolt 91 is unscrewed upwards through the special spanner and separated from the connecting structure of the third cover plate 3 or the cable trench body 4, the anti-theft bolt 91 is pulled upwards until the nut 93 contacts the lower bottom surface of the second cover plate 2, and the pulled-out part of the anti-theft nut 93 forms a natural handle, so that the anti-theft nut 93 at the two ends of the second cover plate 2 can be lifted only by manually grasping the anti-theft nut 93 at the two ends of the second cover plate 2 (the weight of a 1m long cover plate is approximately 6 KG), special tools or tools are not needed, and the overhaul convenience is greatly improved; the spacer 92 located at the upper portion when the second cover plate 2 is lifted can increase the force contact area, reduce the stress and facilitate the application of force. The specific structure of the anti-theft bolt 91 is the prior art, and will not be described herein.
As an example of the present invention, the cable duct body 4 is fixedly provided with an L-shaped angle steel 94, for example, by expansion bolts, the angle steel 94 is provided with a fixing hole, and the inner surface of the fixing hole is provided with tapping threads. When the anti-theft bolt 91 is installed, the anti-theft bolt is only required to be screwed on the angle steel 94 from the outside, and the anti-theft bolt is not required to be screwed into the cable trench body 4 by hands or other tools, so that the installation is convenient; meanwhile, the cover plate is prevented from being lifted up by penetrating wind in the ditch body, namely the wind pressure is prevented.
Preferably, a fixing hole is provided on the upper end surface of the third wall 63, an avoiding hole (not shown) is provided at a position corresponding to the fixing hole on the second cover plate 2, and the lower end of the anti-theft bolt 91 can be screwed into the fixing hole. During assembly, after the gasket 92 is sleeved on the anti-theft bolt 91, the anti-theft bolt 91 passes through the avoidance hole and then the nut 93 is screwed on, at this time, the gasket 92 and the nut 93 are respectively positioned on the upper side and the lower side of the second cover plate 2, and then the anti-theft bolt 91 is screwed and assembled into the fixing hole by using a tool.
As shown in fig. 7, as an example of the present invention, the cover structure for a cable trench further includes a side plate 10, where the side plate 10 is located on at least one side of the cable trench body 4, and is used for plugging the ends of the first cover plate 1, the second cover plate 2, and the third cover plate 3.
As an example of the present invention, the side plate 10 is a pultruded structure, and includes a first plate 11 and a second plate 12 connected to each other, where the second plate 12 is adhered to or mechanically connected to the upper surface of the first cover plate 1, and the first plate 11 is capable of sealing the cavity structure 5. The device has the advantages of light weight, low consumption and the like.
Example 2
The cover plate structure for the cable pit can be loosened after being used for a period of time; if the wind pressure of the use scene or region is large, the risk that the cover plate structure is blown up exists; especially, the cover plate structure is more prominent when the weight is reduced by more than 1/2 compared with the cover plate structure made of cement materials, and the cost is increased due to simple thickening and weight increment. How to give consideration to the bearing capacity and the production cost under the original weight, the applicant further improves on the basis of the embodiment 1:
at least one side of the cavity structure 5 is provided with an opening, the side plate 10 is of a pultrusion structure and comprises a first plate 11, a second plate 12 is arranged at the middle part of the first plate 11, one end of the second plate 12 away from the first plate 11 is provided with a third plate 13, and the third plate 13 is parallel to the first plate 11 and extends downwards, as shown in fig. 5. This setting carries out the counter weight in order to satisfy the wind pressure requirement in different regions through filling the material to cavity structure 5 to utilize curb plate 10 to carry out the shutoff to the tip of first apron 1, can further reduce the weight of apron structure under the same condition, compromise bearing capacity and manufacturing cost.
During assembly, the side plate 10 is firstly assembled on the cable trench body 4, then the first cover plate 1 after the counterweight is placed on the side plate 10, the side plate 10 is limited through the first cover plate 1, and meanwhile, the first plate 11 of the side plate 10 can seal the cavity structure 5.
Preferably, the third plate 13 is arranged parallel to the first plate 11, and the second plate 12 is arranged perpendicular to the first plate 11. The arrangement ensures that the side plates 10 respectively have large contact areas with the cable trench body 4 and the first cover plate 1, so that the assembly is stable and reliable, and the production and the processing are convenient.
Preferably, the cross section of the cavity structure 5 is rectangular with the length and the width being a and b respectively, wherein a is greater than or equal to b. The arrangement can give consideration to the weight reduction effect and the rigidity index. As an example of the present invention, the first plate 11 is provided with a plug portion 113 at a position corresponding to the cavity structure 5, and the plug portion 113 can be inserted into the cavity structure 5. This setting can block off hollow structure 5, prevents to backfill the matrix and flows backward, conveniently to the counter weight operation of first apron 1.
Preferably, a rubber strip is arranged at the outer edge of the plugging portion 113, so that the cavity structure 5 is conveniently plugged and assembled. The plugging part 113 is plugged into the cavity structure 5 to form tight fit, if water is permeated, water flows to the outer side of the cable duct body 4 along the inner wall of the side plate 10 through the gap, so that the plugging effect and the waterproof effect can be achieved, and the cable duct can be used for engineering application.
Preferably, a positioning column 114 is disposed at the lower portion of the plugging portion 113, and a side wall of the positioning column 114 near the plugging portion 113 abuts against the lower wall surface of the cavity structure 5. This arrangement restricts the assembly position of the first cover plate 1 in the vertical direction by the positioning column 114, and makes the left and right placement of the first cover plate 1 on the cable trench body 4 uniform, keeping tidy.
Preferably, the first plate 11 is provided with an upper cross bar 111 and a lower cross bar 112 parallel to each other, the lower cross bar 112 is located below the upper cross bar 111, and an end of the lower cross bar 112 can abut against the cavity structure 5. The arrangement can form shielding to the assembly gap after the side plate 10 is assembled, thereby playing an attractive role; and cooperates with the positioning posts 114 to limit the assembly position of the side plate 10 with high assembly accuracy.
The applicant studied the dimensional parameters of the cavity structure 5 based on weight and stiffness indexes, the results being shown in table 1.
TABLE 1 relation of first Chamber size parameter to weight and stiffness index of first cover plate 1
The above data are curve-fitted to obtain that the relation between the stiffness index D of the first cover plate 11 having the a-type cavity structure 511 and the weight W conforms to the following formula: w=0.2317×d 2 -2.1503 x d+13.937; the relationship between the stiffness index D of the first cover plate 11 having the B-type cavity structure 511 and the cover plate weight W satisfies the following formula: w=43.684×d 3 -93.476*D 2 +65.92*D-2.9163。
According to analysis of the formula, when the weight of the cover plate is smaller than 11.22Kg under the condition of the fixed circumference of the cavity, the A-type structural cavity is selected within the allowable range of the rigidity index, and the weight of the B-type structural cavity cannot be reduced, namely the cost cannot be reduced; when the weight of the cover plate is greater than or equal to 11.22kg, the rigidity index of the A-shaped structural cavity is smaller under the condition of the same weight, namely the same cost, the deformation is small, and the stability is better, as shown in fig. 9.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention should be assessed accordingly to that of the appended claims.
Claims (9)
1. The utility model provides a apron structure for cable pit, establishes on cable pit body (4), its characterized in that, including the first apron (1), second apron (2), the third apron (3) that overlap joint links to each other in proper order, the both sides of second apron (2) set up lapping plate (8) respectively, the both sides of third apron (3) set up drainage structures, lapping plate (8) are located drainage structures in and with drainage structures's lateral wall butt, thereby make second apron (2) can cover drainage structures.
2. The cover plate structure for a cable pit according to claim 1, wherein a cavity structure (5) is provided at the bottom of the second cover plate (2), and the splice plates (8) are provided on both left and right sides of the cavity structure (5).
3. The cover plate structure for the cable pit according to claim 1, wherein the water draining structure comprises a first water draining groove (6) and a second water draining groove (7) which are respectively positioned at the left side and the right side of the third cover plate (3), the third cover plate (3) further comprises a baffle plate (14) which is horizontally arranged, and the baffle plate (14) is positioned above the second water draining groove (7) and is abutted against the lapping plate (8).
4. The cover plate structure for the cable pit according to claim 1, wherein the first water draining grooves (6) and the lapping plates (8) are respectively arranged at two ends of the first cover plate (1), a cavity structure (5) is arranged between the lapping plates (8) and the first water draining grooves (6), an opening is arranged at least one side of the cavity structure (11), and the cavity structure (5) extends along the length direction of the first water draining grooves (6) and/or the lapping plates (8).
5. The cover plate structure for the cable pit according to claim 4, wherein the first drainage groove (6) comprises a first wall (61), a second wall (62) and a third wall (63) which are sequentially connected, the free end of the third wall (63) is obliquely arranged upwards, and one end of the first wall (61) away from the second wall (62) is connected with the first cover plate (1).
6. The cover plate structure for a cable trench according to claim 1, wherein the second cover plate (2) is provided with an anti-theft device (9), and the anti-theft device (9) is used for being fixedly connected with one of the first cover plate (1), the third cover plate (3) or the cable trench body (4).
7. The cover plate structure for the cable pit according to claim 6, wherein the anti-theft device (9) comprises an anti-theft bolt (91), a nut (93) and a gasket (92) are arranged on the anti-theft bolt (91), the nut (93) and the gasket (92) are respectively arranged on the upper side and the lower side of the second cover plate (2), and the length of the bolt is L 4 The maximum distance of the nut (93) from the gasket (92) is L 5 The thickness of the second cover plate (2) is L 6 Wherein L is 6 ＜L 5 ＜0.9*L 4 。
8. The cover plate structure for a cable trench according to claim 7, wherein the anti-theft device (9) further comprises an angle steel (94) assembled and connected with the cable trench body (4), the angle steel (94) is provided with a fixing hole, and the anti-theft bolt (91) is optionally assembled with the fixing hole in a threaded manner.
9. The cover plate structure for a cable pit according to claim 1, further comprising a side plate (10), wherein the side plate (10) comprises a first plate (11) and a second plate (12) which are prepared by a pultrusion process and are vertically connected, the second plate (12) is adhered to or mechanically connected with the upper surface of the first cover plate (1), and the first plate (11) is abutted against the end part of the first cover plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310703096.7A CN116695786A (en) | 2023-06-14 | 2023-06-14 | Cover plate structure for cable trench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310703096.7A CN116695786A (en) | 2023-06-14 | 2023-06-14 | Cover plate structure for cable trench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116695786A true CN116695786A (en) | 2023-09-05 |
Family
ID=87842903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310703096.7A Pending CN116695786A (en) | 2023-06-14 | 2023-06-14 | Cover plate structure for cable trench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116695786A (en) |
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2023
- 2023-06-14 CN CN202310703096.7A patent/CN116695786A/en active Pending
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