CN115207837A - Overhead cable laying method and safety protection auxiliary device thereof - Google Patents
Overhead cable laying method and safety protection auxiliary device thereof Download PDFInfo
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- CN115207837A CN115207837A CN202210814098.9A CN202210814098A CN115207837A CN 115207837 A CN115207837 A CN 115207837A CN 202210814098 A CN202210814098 A CN 202210814098A CN 115207837 A CN115207837 A CN 115207837A
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 230000007246 mechanism Effects 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 98
- 239000010959 steel Substances 0.000 claims description 98
- 230000008569 process Effects 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 9
- 229910000746 Structural steel Inorganic materials 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 210000000056 organ Anatomy 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000004804 winding Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
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- 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
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
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- 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
- H02G11/00—Arrangements of electric cables or lines between relatively-movable parts
- H02G11/02—Arrangements of electric cables or lines between relatively-movable parts using take-up reel or drum
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- 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
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
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- 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
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0456—Ladders or other supports
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- 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
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/24—Installation of lines or cables on walls, ceilings or floors by means of insulators
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- 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
Abstract
The invention discloses a high-altitude cable laying method and a safety protection auxiliary device thereof, and relates to the technical field of cable laying. In order to improve the engineering quality and safety of high-altitude cable laying, the laying method specifically comprises the following steps: checking a shaft channel in a power distribution room needing to be installed on a cable floor, installing a bridge on the inner wall of the shaft channel after the checking is finished and meeting the requirement, arranging bridges corresponding to each floor in a building in the shaft channel, wherein reserved holes are formed in the outer wall of one side of each bridge, and arranging a safety protection auxiliary device at each reserved hole of each floor bridge; the safety protection auxiliary device comprises a detection mechanism, an automatic clamping mechanism and a real-time alarm shutdown mechanism. The invention completes the work of laying cables in the high-rise building step by step according to the sequence of the low-rise layer and the high-rise layer, so that the sequence and the flow of laying the cables in the high-rise building are more reasonable, and the engineering quality of laying the cables and the installation and fixation effect are improved.
Description
Technical Field
The invention relates to the technical field of cable laying, in particular to a high-altitude cable laying method and a safety protection auxiliary device thereof.
Background
The height of a high-rise building is often more than one hundred meters, and for cable laying of the high-rise building, the operation is mostly carried out in a vertical hoisting mode of a vertical shaft, and because of the great height difference, the weight of the cable can exceed one ton or even more. In the laying process, the stability of hoisting is ensured, and meanwhile, the installation is carried out according to a standard laying method, which is directly related to the overall quality and reliability of the engineering.
At present cable laying adopts the form of hoist engine collocation hoisting pulley to hoist and mount and lays more, because the length that the cable was hoisted perpendicularly is big, in the hoist and mount in-process, the cable can produce and rock, lead to cable and the wall of a well to produce the friction, cause certain damage, and simultaneously, to the fixed form of cable traction portion, lead to the cable head to bear very big weight, and whole area of contact is little, the problem of cable slippage and traction head cable damage appears easily, consequently, the urgent need for a cable laying method that can carry out safe laying to heavy weight cable improves cable laying's engineering quality and security.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides an overhead cable laying method and a safety protection auxiliary device thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
an overhead cable laying method comprises the following steps:
a1: checking a shaft channel in the power distribution room where the cable floor needs to be installed, and installing a bridge on the inner wall of the shaft channel after the checking is finished and meets the requirement;
a2: the bridges which are arranged in the shaft passage and correspond to each floor in the building are provided with reserved holes on the outer wall of one side, and safety protection auxiliary devices are respectively arranged at the reserved holes of the bridges corresponding to the floors, wherein the arrangement quantity is determined by the safety stress range of the safety protection auxiliary devices and the total weight of laid cables;
a3: the cable coil is sequentially hoisted to a corresponding equipment layer by a first layer through hoisting equipment, a guide pulley is installed on one side of a reserved hole of each layer of bridge, and then cable laying is carried out on a power distribution room inside the building according to a basement laying flow and a ground building laying flow.
Preferably: the basement laying process comprises the following steps:
b1: arranging a winch on a corresponding floor through a fixed steel wire, and then carrying out a 110% load test on the winch;
b2: fixing the channel steel on the inner wall of a vertical shaft channel of a corresponding floor of the building through an expansion bolt, and hanging the tensioning pulley at the bottom of the channel steel through a hanging steel wire;
b3: drawing out a steel wire rope in the winch, sequentially winding the steel wire rope on the outer walls of the guide pulley and the tensioning pulley, and drawing out a cable on the cable reel;
b4: fixing the cable and the steel wire rope together through a cable clamp, then controlling an electric winch to lower the cable to a basement power distribution room through the steel wire rope, and then laying the cable from top to bottom;
b5: when the cable descends one layer, the cable and the steel wire rope are bound together by using a cable clamp on each layer.
Further: the ground building laying process comprises the following steps:
c1: arranging a winch on a corresponding floor through a fixed steel wire, fixing channel steel on the inner wall of a shaft channel of the corresponding floor of the building through an expansion bolt, and hanging a tensioning pulley at the bottom of the channel steel through a hanging steel wire;
c2: drawing out a steel wire rope in the winch, sequentially winding the steel wire rope on the outer walls of the guide pulley and the tensioning pulley, and then drawing out a cable arranged on the first-layer cable reel;
c3: fixing the cable and the steel wire rope together through a cable clamp, then controlling an electric winch to roll up the steel wire rope at a constant speed, and laying the cable in each floor power distribution room from bottom to top in sequence;
c4: when the cable rises to one floor, the cable and the steel wire rope are bound together by the cable clamp at each floor.
Further preferred is: in B1, a winch with proper rated tension, drum rope capacity, drum diameter and motor power is selected according to the weight of the laid cable.
As a preferable aspect of the present invention: in B2, the winch, the guide pulley and the channel steel are fixed by using a carbon structural steel expansion bolt.
Further preferred as the invention: in B4, the cable clamp comprises a metal net sleeve and a rotary joint, the metal net sleeve is fixed at the top end of the cable, and the metal net sleeve is connected with a steel wire rope of the winch through the rotary joint.
As a still further scheme of the invention: in B3, the steel wire rope is an oilless steel wire, the steel wire rope with the corresponding size is selected according to the weight of the laid cable, a cable pulley is fixed on one side of the cable reel through a screw, and a cable pay-off rack is arranged on the outer wall of the cable reel.
The utility model provides a high altitude cable laying safety protection auxiliary device, includes detection mechanism, automatic chucking mechanism and real-time alarm shutdown mechanism, detection mechanism includes electron tachymeter and control panel, and the electron tachymeter sets up in cable drum leading-out terminal one side, and real-time alarm shutdown mechanism includes warning light and bee calling organ, warning light, bee calling organ, electron tachymeter and hoist engine respectively with control panel electric connection.
On the basis of the scheme, the following steps are preferred: the automatic clamping mechanism comprises an installation block fixed on the inner wall of one side of the bridge, a first clamping block, a connecting seat, a threaded rod, a stepping motor, a second clamping block, a guide rod and a guide frame, the second clamping block is fixed on the outer wall of the bottom of the installation block, the stepping motor and the guide frame are respectively fixed on the outer walls of the two sides of the second clamping block, the threaded rod is connected on an output shaft of the stepping motor through a coupler, the connecting seat is connected on the outer wall of the threaded rod through threads, the first clamping block is fixed on the outer wall of one side of the connecting seat, the guide rod is fixed on the outer wall of one side of the first clamping block, the guide rod is connected on the inner wall of the guide frame in a sliding mode, and the stepping motor is electrically connected with the control panel.
The invention has the beneficial effects that:
1. when laying high-rise building cables, firstly according to the sequence of firstly low-rise and then high-rise, every cable is outwards released through a cable reel, a cable is fixed in a bridge frame corresponding to a floor, when laying a ground surface building, the cable is laid from top to bottom in a fixed sequence, when the cable of a basement power distribution room is installed, the cable is laid from top to bottom in a fixed sequence, so that the work of laying the cables of the high-rise building is stably completed step by step, the sequence and the flow of laying the cables of the high-rise building are more reasonable, and the engineering quality and the installation fixing effect of laying the cables are improved.
2. When the cable is laid, every time the cable ascends and descends by one floor, a worker clamps and fixes the cable and the steel wire rope together by using the cable clamp, so that the cable and the steel wire rope which are gradually extended outwards are clamped and fixed into a whole by the cable clamp, the tension on the cable is uniformly distributed to each section of the steel wire rope, the winch can stably pull the cable upwards or downwards through the steel wire rope, and the stability of the cable during laying is improved.
3. Through reserving entrance to a cave one side installation guide pulley at every layer of crane span structure, can lead and spacing to cable and the wire rope that reciprocates when laying, avoid wire rope and cable to take place the friction with the building inner wall when reciprocating, cooperate the tensioning pulley to carry out the tensioning to the cable of laying simultaneously to make things convenient for the staff to lay the cable, improved cable installation efficiency.
4. When the cable moving speed increases to appointed speed suddenly, show that draw the wire rope that draws the cable and break off or drop from the cable outer wall, control panel control step motor drives the threaded rod and rotates this moment, it draws close to second clamp splice one side fast to promote first clamp splice through the screw thread, it is fixed with the cable and the wire rope centre gripping that pass between second clamp splice and the first clamp splice, because the staff all is provided with safety protection auxiliary device at each floor of building, consequently automatic clamping mechanism can be quick with the cable chucking when the cable takes place to drop, control panel control warning light and bee calling organ operation afterwards, the simultaneous control hoist engine is closed, avoid taking place the incident after cable and wire rope drop.
5. When joining in marriage electrical room laying cable to the basement, set up the cable drum at the building first floor to use the hoist engine to pass through wire rope and slowly carry the cable downwards, hoist engine accessible wire rope controls the falling speed of cable this moment, let the cable of laying downwards slowly descend at the uniform velocity, accessible control hoist engine opens and stops simultaneously and lets the cable hover at corresponding position temporarily, thereby make things convenient for the staff to control the position of cable when laying, improved the laying quality of cable.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:
fig. 1 is a schematic flow chart of an overhead cable laying method according to the present invention;
fig. 2 is a schematic diagram of a basement laying flow of an overhead cable laying method according to the present invention;
fig. 3 is a schematic diagram of a ground building laying process of an aerial cable laying method according to the present invention;
fig. 4 is a schematic diagram of the cable laying of the ground building according to the aerial cable laying method of the present invention;
fig. 5 is a schematic diagram of basement cable laying according to the overhead cable laying method of the present invention;
fig. 6 is a schematic structural view of an automatic clamping mechanism of an auxiliary device for high-altitude cable laying safety protection according to the present invention;
fig. 7 is a schematic side view of an automatic clamping mechanism of an auxiliary device for overhead cable laying safety protection according to the present invention;
fig. 8 is a schematic circuit flow diagram of an auxiliary device for aerial cable laying safety protection according to the present invention.
In the figure: 1. hang steel wire, 2 expansion bolts, 3 channel-section steels, 4 fixed steel wires, 5 windlasses, 6 wire rope, 7 tensioning pulley, 8 guide pulleys, 9 cable anchor clamps, 10 cables, 11 cable drum, 12 cable pulleys, 13 cable pay-off rack, 14 first clamp splice, 15 connecting seats, 16 threaded rods, 17 step motor, 18 second clamp splice, 19 installation pieces, 20 guide bars, 21 guide frame.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, 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 only partial embodiments of the present application, but not all embodiments. 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 the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example 1:
an aerial cable laying method, as shown in fig. 1-5, comprises the following steps:
a1: checking a vertical shaft channel in the power distribution room of the floor where the cable 10 needs to be installed, and installing a bridge frame on the inner wall of the vertical shaft channel after the checking is finished and meets the requirement;
a2: bridge frames which are arranged in the shaft channel and correspond to each floor in the building are provided with reserved holes on the outer wall of one side, safety protection auxiliary devices are respectively arranged at the reserved holes of the bridge frames corresponding to the floors, and the arrangement quantity is determined by the safety stress range of the safety protection auxiliary devices and the total weight of the laid cable 10;
a3: the cable reel 11 is sequentially hoisted and transported to a corresponding equipment layer by a hoisting device on the first layer, a guide pulley 8 is installed on one side of a reserved hole of each layer of bridge, and then a cable 10 is laid for a power distribution room in the building according to a basement laying flow and a ground building laying flow.
As shown in fig. 2, the basement laying process includes the following steps:
b1: arranging a winch 5 on a corresponding floor through a fixed steel wire 4, and then carrying out a 110% load test on the winch 5;
b2: then, fixing channel steel 3 on the inner wall of a vertical shaft channel of a corresponding floor of the building through expansion bolts 2, and hanging a tension pulley 7 at the bottom of the channel steel 3 through a hanging steel wire 1;
b3: the steel wire rope 6 in the winch 5 is drawn out and wound on the outer walls of the guide pulley 8 and the tensioning pulley 7 in sequence, and then the cable 10 on the cable drum 11 is drawn out;
b4: fixing a cable 10 with a steel wire rope 6 through a cable clamp 9, then controlling an electric winch 5 to lower the cable 10 to a basement power distribution room through the steel wire rope 6, and then laying the cable 10 from top to bottom;
b5: when the cable 10 descends one layer, the cable 10 and the steel wire rope 6 are bound together by the cable clamp 9.
As shown in fig. 3, the ground building laying process includes the following steps:
c1: arranging a winch 5 on a corresponding floor through a fixed steel wire 4, fixing channel steel 3 on the inner wall of a shaft channel of the corresponding floor of the building through an expansion bolt 2, and hanging a tension pulley 7 at the bottom of the channel steel 3 through a hanging steel wire 1;
c2: the steel wire rope 6 in the winch 5 is drawn out and wound on the outer walls of the guide pulley 8 and the tensioning pulley 7 in sequence, and then the cable 10 arranged on the first-layer cable drum 11 is drawn out;
c3: fixing a cable 10 with a steel wire rope 6 through a cable clamp 9, then controlling an electric winch 5 to wind the steel wire rope 6 upwards at a constant speed, and sequentially laying the cable 10 in each floor power distribution room from bottom to top;
c4: when the cable 10 rises one floor, the cable 10 and the steel wire rope 6 are bound together by the cable clamp 9 on each floor.
In the B1, assuming that the weight of a laid cable is 10KN and the length of the laid cable is 100M, the rated tension of the selected winch 5 is 10-15kN, the rope capacity of a winding drum is 110-130M, the diameter of the winding drum is 170mm, and the power of a motor in the winch 5 is 3-4kW; the worker should select the winch 5 with proper rated tension, drum rope capacity, drum diameter and motor power according to the weight of the laid cable 10;
in the B2, assuming that the laid cable is 10KN heavy and 100M long, an expansion bolt 2 of 10mm carbon structural steel is used for fixing the winch 5, the guide pulley 8 and the channel steel 3;
in B4, the cable clamp 9 comprises a metal net sleeve and a rotary joint, the metal net sleeve is fixed at the top end of the cable, and the metal net sleeve is connected with a steel wire rope 6 of the winch 5 through the rotary joint;
in B3, assuming that the laid cable is 10KN heavy and 100M long, the steel wire rope 6 is an oilless steel wire with the diameter of 10mm, the self weight of the steel wire rope 6 is 30kg/100M, a cable pulley 12 is fixed on one side of the cable reel 11 through a screw, and a cable pay-off rack 13 is arranged on the outer wall of the cable reel 11; the cable pulley 12 guides the cable 10 drawn out from the cable drum side and laid down downward, and the cable reel 13 guides the rotating cable drum 11.
In order to accurately calculate the overall weight of the cable and the steel wire rope 6 for pulling the cable and select a proper winch 5 for pulling, measurement and calculation demonstration are performed according to data collected in the following table:
the weight calculation formula of the steel wire rope 6 is M = KD2; wherein M is the reference weight per unit length of the steel wire rope 6 in kg/100, D is the nominal diameter of the steel wire rope 6 in mm, K is the weight coefficient per unit length of a certain structural steel wire rope 6 which is fully oiled in kg/m.mm2, and the value of K is given in the table; according to the data of the serial number 1, the weight of the steel wire rope 6 is calculated by the formula as follows: 0.418 × 10/100 × 72.25 ≈ 30kg, so that the total weight of the cable and the wire rope 6 is 743+30=773kg × 9.8/1000=7.57 (kN), and therefore, the cable in the upper table can be pulled by using the winch 5 with the rated tension of 10kN, the drum rope containing amount of 110m, the drum diameter of 170mm, and the motor power of 3kW, and the cables with different weights and lengths can be calculated according to the calculating method, so that the cable can be pulled by using the winch 5 with which type and power is used.
The hoist 5 should be installed at the corresponding floor, for example, 30 floors in the building under construction, cable laying is to lay the computer lab of 30 floors height from the basement power distribution room to roofing, and then hoist 5 should set up on the aspect of 30 floors, and the cable utilizes hoist wire rope to draw along electric well shaft passageway upwards. Because cable laying installation is not carried out on all floors, the winch is only required to be installed on the top layer of the floors, so that too many winches 5 are not required to be arranged, engineering investment and resource waste are effectively reduced, and construction efficiency is improved.
In order to confirm whether a steel wire rope 6 made of oil-free steel wires with the diameter of 10mm meets the requirements of the engineering hoisting cable, measurement and demonstration are carried out according to data collected by the following tables and formulas:
the breaking force of the steel wire rope 6 is calculated by the formula
Wherein F0 is the minimum breaking force of the steel wire rope 6, the unit is kN, D is the nominal diameter of the steel wire rope 6, the unit is mm, R0 is the nominal tensile strength of the steel wire rope 6, the unit is MPa, and K 'is the minimum breaking force coefficient of the steel wire rope 6 with a certain specified structure (the value of K' is shown in the following table).
Surface state and nominal tensile strength of steel wire
Safety coefficient of wire rope 6
| Situation of use | Factor of safety |
| Used as guy rope and drag rope | 3.5 |
| Manpower-driven hoisting equipment | 4.5 |
| Used as |
8～10 |
| Mechanically driven hoisting equipment | 5-6 |
| Used as sling (without bend) | 6-7 |
| Used as manned |
14 |
The following is calculated from the above specification parameters:
7.57 × 6=45.42kn 10 × 1570.356/1000 =55.89kn, so that the requirements for hoisting the construction shaft cable can be met by using 10mm (6 × 37) smooth surface and B-grade galvanized steel wire ropes 6 according to the specification requirements.
In order to confirm that the winch 5, the guide pulley 8 and the channel steel 3 can meet engineering requirements by using the carbon structural steel 10mm expansion bolt 2 for fixing, measurement and demonstration are carried out according to the following data:
strength index for Steel design (N/mm 2)
And (3) calculating the strength of the expansion bolt 2: 5 x 3.14 x 125/1000=9.8kn 4=39.2kn, so according to the design strength index of standard steel, the fixed hoist 5, the guide pulley 8 and the channel steel 3 adopt the carbon structural steel 10mm expansion bolt 2 to meet the shearing resistance requirement.
When the high-rise building cable is laid, firstly, according to the sequence of a low layer and a high layer, when a cable is outwards released through the cable reel 11, a cable is fixed in the bridge frame of the corresponding floor, when the ground surface building is laid, the cable is laid from top to bottom in the cable installation and fixing sequence, and when the cable of the basement power distribution room is installed, the cable is laid from top to bottom in the cable installation and fixing sequence, so that the work of laying the cable of the high-rise building is stably completed step by step, the cable laying sequence and the process of the high-rise building are more reasonable, and the overall efficiency of cable laying and the installation and fixing effect are improved;
when a cable is laid on one floor, the worker clamps and fixes the cable and the steel wire rope 6 by using the cable clamps 9, so that the cable and the steel wire rope 6 which extend outwards gradually are clamped and fixed into a whole by the cable clamps 9, the tension on the cable is uniformly distributed to all sections of the steel wire rope 6, the winch 5 can stably pull the cable upwards or downwards through the steel wire rope 6, and the stability of the cable during laying is improved.
Through reserving entrance to a cave one side installation guide pulley 8 at every layer of crane span structure, can lead and spacing to cable and the wire rope 6 that reciprocates when laying, avoid wire rope 6 and cable to take place the friction with the building inner wall when reciprocating, cooperate tensioning pulley 7 to carry out the tensioning to the cable of laying simultaneously to make things convenient for the staff to lay the cable, improved cable erection efficiency.
Example 2:
an overhead cable laying safety protection auxiliary device is shown in fig. 4, and the embodiment is improved on the basis of embodiment 1 as follows: the safety protection auxiliary device comprises a detection mechanism, an automatic clamping mechanism and a real-time alarm stopping mechanism, wherein the detection mechanism comprises an electronic velocimeter and a control panel, the electronic velocimeter is arranged on one side of the wire outlet end of the cable drum 11, the real-time alarm stopping mechanism comprises a warning lamp and a buzzer, and the warning lamp, the buzzer, the electronic velocimeter and the winch 5 are respectively and electrically connected with the control panel; the automatic clamping mechanism comprises an installation block 19 fixed on the inner wall of one side of the bridge through screws, a first clamping block 14, a connecting seat 15, a threaded rod 16, a stepping motor 17, a second clamping block 18, a guide rod 20 and a guide frame 21, wherein the second clamping block 18 is fixed on the outer wall of the bottom of the installation block 19, the stepping motor 17 and the guide frame 21 are respectively fixed on the outer walls of two sides of the second clamping block 18 through screws, the threaded rod 16 is connected on an output shaft of the stepping motor 17 through a coupler, the connecting seat 15 is connected on the outer wall of the threaded rod 16 through threads, the first clamping block 14 is fixed on the outer wall of one side of the connecting seat 15, the guide rod 20 is fixed on the outer wall of one side of the first clamping block 14 through screws, the guide rod 20 is connected on the inner wall of the guide frame 21 in a sliding mode, the stepping motor 17 is electrically connected with a control panel, and the electronic velocimeter is in a model number of DT-2857.
The quantity of setting up of safety protection auxiliary device is decided by the safety atress scope of device, for example the cable weighs 10KN, safety protection auxiliary device's the biggest pressure range that bears is about 5KN, this cable then needs install 3-4 safety protection auxiliary device and can satisfy the safety demand, and this 3-4 safety protection auxiliary device need be installed on corresponding building floor equidistance, guarantee that the cable length between the adjacent safety protection auxiliary device equals, let safety protection auxiliary device evenly bear the weight of, thereby need not all to install on every layer, engineering input has been reduced under the condition that does not influence engineering safety.
When a worker installs the automatic clamping mechanism, firstly, the installation block 19 is fixed at a specified position of the inner wall of the bridge through a screw, then, the fixed cable and the fixed steel wire rope 6 pass through the space between the second clamping block 18 and the first clamping block 14, then, the guide rod 20 is inserted into the guide frame 21, and the other end of the guide rod 20 is fixed on one side of the first clamping block 14 through the screw, so that the installation of the automatic clamping mechanism is completed, the electronic velocimeter can monitor the moving speed of the cable conveyed outwards by the cable reel 11 in real time, when the moving speed of the cable suddenly increases to a specified speed, the steel wire rope 6 pulling the cable is broken or falls off from the outer wall of the cable, at the moment, the control panel controls the stepping motor 17 to drive the threaded rod 16 to rotate, so that the first clamping block 14 is pushed to be quickly close to one side of the second clamping block 18 through the screw thread, the cable and the steel wire rope 6 passing through the space between the second clamping block 18 and the first clamping block 14 are clamped and fixed, the worker controls the cable and the steel wire rope 6 to be clamped and fixed, and the worker is provided with safety protection auxiliary devices on each floor of the building, when the cable falls, and the automatic clamping mechanism, and the warning lamp is controlled, and the safety protection auxiliary devices are controlled to control the safety protection device to stop the winch 5 and the safety protection device to prevent the safety protection machine 5 after an accident.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (9)
1. An overhead cable laying method is characterized by comprising the following steps:
a1: checking a vertical shaft channel in a floor power distribution room where a cable (10) needs to be installed, and installing a bridge on the inner wall of the vertical shaft channel after the checking is finished and meets the requirement;
a2: the bridges which are arranged in the shaft passage and correspond to each floor in the building are provided with reserved holes on the outer wall of one side, safety protection auxiliary devices are respectively arranged at the reserved holes of the bridges corresponding to the floors, and the arrangement quantity is determined by the safety stress range of the safety protection auxiliary devices and the total weight of the laid cables (10);
a3: the cable reel (11) is sequentially hoisted to a corresponding equipment layer by a first layer through hoisting equipment, a guide pulley (8) is installed on one side of a reserved hole of each layer of bridge, and then cables (10) are laid for a power distribution room inside a building according to a basement laying flow and a ground building laying flow.
2. An overhead cable laying method according to claim 1, wherein the basement laying process comprises the following steps:
b1: arranging a winch (5) on a corresponding floor through a fixed steel wire (4), and then carrying out a 110% load test on the winch (5);
b2: then, channel steel (3) is fixed on the inner wall of a vertical shaft channel of a corresponding floor of the building through expansion bolts (2), and a tension pulley (7) is hung at the bottom of the channel steel (3) through a hanging steel wire (1);
b3: a steel wire rope (6) in the winch (5) is drawn out and is sequentially wound on the outer walls of the guide pulley (8) and the tensioning pulley (7), and then a cable (10) on a cable drum (11) is drawn out;
b4: fixing a cable (10) with a steel wire rope (6) through a cable clamp (9), then controlling an electric winch (5) to lower the cable (10) to a basement power distribution room through the steel wire rope (6), and then laying the cable (10) from top to bottom;
b5: when the cable (10) descends one layer, the cable (10) and the steel wire rope (6) are bound together by using a cable clamp (9) on each layer.
3. An aerial cabling method as claimed in claim 1, wherein the ground construction laying process includes the steps of:
c1: arranging a winch (5) on a corresponding floor through a fixed steel wire (4), fixing channel steel (3) on the inner wall of a vertical shaft channel of the corresponding floor of the building through an expansion bolt (2), and hanging a tensioning pulley (7) at the bottom of the channel steel (3) through a hanging steel wire (1);
c2: a steel wire rope (6) in the winch (5) is drawn out and sequentially wound on the outer walls of the guide pulley (8) and the tensioning pulley (7), and then a cable (10) arranged on a first-layer cable reel (11) is drawn out;
c3: fixing a cable (10) with a steel wire rope (6) through a cable clamp (9), then controlling an electric winch (5) to wind the steel wire rope (6) upwards at a constant speed, and sequentially laying the cable (10) in power distribution rooms of various floors from bottom to top;
c4: when the cable (10) rises for one floor, the cable (10) and the steel wire rope (6) are bound together by using a cable clamp (9) for each floor.
4. An aerial cabling method as claimed in claim 2, wherein in B1, the winches (5) are selected for appropriate rated tension, drum capacity, drum diameter and motor power, depending on the weight of the cable (10).
5. The overhead cable laying method according to claim 2, wherein in B2, a carbon structural steel expansion bolt (2) is used for fixing the winch (5), the guide pulley (8) and the channel steel (3).
6. An aerial cable laying method as claimed in claim 2, wherein in B4, the cable clamp (9) comprises a metal net sleeve and a rotary joint, the metal net sleeve is fixed at the top end of the cable, and the metal net sleeve is connected with a steel wire rope (6) of the winch (5) through the rotary joint.
7. The aerial cable laying method according to claim 2, wherein in the B3, the steel wire rope (6) is an oilless steel wire, the steel wire rope (6) with the corresponding size is selected according to the weight of the laid cable (10), a cable pulley (12) is fixed on one side of the cable drum (11) through screws, and a cable pay-off rack (13) is arranged on the outer wall of the cable drum (11).
8. The utility model provides a high altitude cable laying safety protection auxiliary device, includes detection mechanism, automatic chucking mechanism and real-time alarm shutdown mechanism, its characterized in that, detection mechanism includes electron tachymeter and control panel, and the electron tachymeter sets up in cable drum (11) leading-out terminal one side, and real-time alarm shutdown mechanism includes warning light and bee calling organ, warning light, bee calling organ, electron tachymeter and hoist engine (5) respectively with control panel electric connection.
9. The overhead cable laying safety protection auxiliary device according to claim 8, wherein the automatic clamping mechanism comprises a mounting block (19) fixed on an inner wall of one side of the bridge, a first clamping block (14), a connecting seat (15), a threaded rod (16), a stepping motor (17), a second clamping block (18), a guide rod (20) and a guide frame (21), the second clamping block (18) is fixed on an outer wall of the bottom of the mounting block (19), the stepping motor (17) and the guide frame (21) are respectively fixed on outer walls of two sides of the second clamping block (18), the threaded rod (16) is connected on an output shaft of the stepping motor (17) through a coupler, the connecting seat (15) is connected on an outer wall of the threaded rod (16) through threads, the first clamping block (14) is fixed on an outer wall of one side of the connecting seat (15), the guide rod (20) is fixed on an outer wall of one side of the first clamping block (14), the guide rod (20) is connected on an inner wall of the guide frame (21) in a sliding manner, and the stepping motor (17) is electrically connected with the control panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210814098.9A CN115207837A (en) | 2022-07-11 | 2022-07-11 | Overhead cable laying method and safety protection auxiliary device thereof |
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| CN202210814098.9A CN115207837A (en) | 2022-07-11 | 2022-07-11 | Overhead cable laying method and safety protection auxiliary device thereof |
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