CN111313312B - Cable sheath protection device and protection method in electric power construction process - Google Patents
Cable sheath protection device and protection method in electric power construction process Download PDFInfo
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- CN111313312B CN111313312B CN202010138842.9A CN202010138842A CN111313312B CN 111313312 B CN111313312 B CN 111313312B CN 202010138842 A CN202010138842 A CN 202010138842A CN 111313312 B CN111313312 B CN 111313312B
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- clamping mechanism
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- oil cylinder
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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
Abstract
The invention provides a cable sheath protection device and a protection method in an electric power construction process, wherein the cable sheath protection device is provided with a slidable second clamping mechanism, a sliding oil cylinder capable of pushing the second clamping mechanism to slide and a corresponding device, so that the tightness degree of a cable can be adjusted in real time in the transportation and overturning processes, and particularly, when the cable is longer or the dragging phenomenon is obvious, the tightness degree of the cable between the first clamping mechanism and the third clamping mechanism is changed to protect the cable.
Description
Technical Field
The invention relates to the technical field of electric power construction, in particular to a cable sheath protection device and a cable sheath protection method in an electric power construction process.
Background
Various power equipment test instruments used in power construction are various, each test instrument is provided with different power lines, data lines, test special lines and the like, the cables with different functions and different specifications are thin and about 5mm in diameter, thick and about 40mm in diameter, short and tens of meters in length, long and tens of meters in length, and the test cables are different in diameter and length.
Because the use frequency of the test instrument is very high, the ground of the transformer substation except the cement ground is the sandstone ground, and the outer skin of the cable is directly connected with the cement ground or the sandstone ground in the use process, so that the outer skin of the cable is seriously abraded. Particularly, the lead is easy to be twisted and wound together on the ground in the phase changing process, the lead is also easy to twist, the lead is easy to damage, the movement and recovery of the lead are troublesome, time and labor are wasted, the cable is long and heavy, and the movement is very inconvenient.
The cable sheath protection device comprises a casing and a cable sheath protection device commonly adopted in the prior art, wherein at least one rolling mechanism is arranged at the upper end of the casing, a through hole which is vertical to the axial direction of a rotating shaft of the rolling mechanism is formed in the casing, a bearing is arranged in the through hole, an inner pipe is sleeved in the bearing, the through hole extends out of the two ends of the inner pipe, and a lead adjusting and fixing mechanism is arranged at the two ends of the inner pipe.
Above-mentioned technical scheme's cable conductor crust protection device can prevent in a limited section cable conductor that the cable conductor from contacting with the earth's surface skin, nevertheless when the cable conductor is longer, because cable fixed knot constructs can not position control, and the cable conductor is longer, can not use.
Disclosure of Invention
The invention aims to provide a cable sheath protection device and a cable sheath protection method in the power construction process, so as to solve the technical problem.
In order to achieve the above object, the present invention provides a cable sheath protection device in an electric power construction process, including: the inner tube is arranged on the outer side of the cable, the section of the inner tube is rectangular, and the inner part of the inner tube is hollow;
rolling mechanisms are arranged on four side surfaces of the inner pipe, so that the cables are driven to rotate in the conveying process; the cable clamping device comprises a rolling mechanism, a plurality of clamping mechanisms, a first clamping mechanism and a second clamping mechanism, wherein the two sides of the rolling mechanism are symmetrically provided with the plurality of clamping mechanisms, one side of the rolling mechanism is provided with the paired first clamping mechanism, the other side of the rolling mechanism is sequentially provided with the paired second clamping mechanism and the paired third clamping mechanism, the positions of the first clamping mechanism and the paired third clamping mechanism on an inner tube are fixed, the second clamping mechanism can horizontally move along the surface of the inner tube, each clamping mechanism comprises a clamping oil cylinder, and each clamping oil cylinder clamps a cable from the two symmetrical sides of the inner tube so that the paired clamping mechanisms clamp the cable;
the second clamping mechanism is close to one side of the rolling mechanism and is provided with a sliding oil cylinder seat, a sliding oil cylinder is arranged on the sliding oil cylinder seat, the piston rod end of the sliding oil cylinder is connected with a push plate, the push plate is connected with a clamping oil cylinder on the second clamping mechanism, and the second clamping mechanism can slide horizontally to a preset position along the outer side wall of the inner tube under the pushing of the sliding oil cylinder.
Furthermore, a horizontal sliding groove is formed in the outer side wall of the inner pipe at the position where the outer side wall of the inner pipe is in contact with the clamping oil cylinder of the second clamping mechanism, and a sliding sheet is arranged at the upper end of the horizontal sliding groove.
Further, a piston rod of a clamping oil cylinder of the second clamping mechanism penetrates through the sliding sheet and the horizontal sliding groove.
Furthermore, one end of the push plate is connected with an oil cylinder barrel on a clamping oil cylinder of the second clamping mechanism, the other end of the push plate on the same side is connected with the sliding sheet, and the sliding sheet and the clamping oil cylinder can horizontally move along the side wall of the inner pipe under the pushing action of the sliding oil cylinder.
Further, every clamping mechanism still is in including setting up the jack catch of tight hydro-cylinder tailpiece of the piston rod end presss from both sides tight hydro-cylinder's drive down, through the jack catch from both sides tight cable crust of clamp to the inside wall of inner tube.
Further, a distance between the first clamping mechanism and the rolling mechanism is set to d1, a distance between the second clamping mechanism and the rolling mechanism is set to d2, and a distance between the third clamping mechanism and the rolling mechanism is set to (d2+ d 3).
Further, during initial construction, the position of the second clamping mechanism is pushed by the sliding oil cylinder, so that the distance between the second clamping mechanism and the third clamping mechanism is d31, at this time, the distance between the first clamping mechanism and the rolling mechanism is d1, the distance between the second clamping mechanism and the rolling mechanism is d21, and d1+ d21> d 3.
Further, in the construction process, if the cable between the first clamping mechanism and the second clamping mechanism is out of the ground, the sliding oil cylinder pushes the second clamping mechanism to move towards the rolling mechanism by a preset distance, so that the distance between the second clamping mechanism and the rolling mechanism is d22, the moving distance is (d21-d22), the distance between the second clamping mechanism and the third clamping mechanism is (d3+ d21), and the cable between the first clamping mechanism and the second clamping mechanism is lifted off the ground by moving the second clamping mechanism; when the cable is pulled out of the ground again, the second clamping mechanism is moved for a distance (d21-d22) each time.
Further, if the distance [ D3+ n x (D21-D22) ] between the second clamping mechanism and the third clamping mechanism is less than or equal to the distance [ D1+ n x (D21-D22) + D ] between the first clamping mechanism and the second clamping mechanism, the sliding oil cylinder is stopped to move,
where D denotes a width of the rolling mechanism, D1 is a distance between the first clamping mechanism and the rolling mechanism, (D21-D22) denotes a moving distance of the second clamping mechanism at a time, and n denotes a number of times of movement of the second clamping mechanism.
In another aspect, the invention provides a method for protecting a cable sheath in an electric power construction process, wherein in an initial construction process, the position of a second clamping mechanism is adjusted to enable the distance between the second clamping mechanism and a third clamping mechanism to be d31, at this time, the distance between the first clamping mechanism and a rolling mechanism is d1, the distance between the second clamping mechanism and the rolling mechanism is d21, and d1+ d21> d 3; when the second clamping mechanism is in the position, construction is carried out, and in the process, the three clamping mechanisms respectively apply acting force f1 to the cable, so that the cable is in a loose state and is separated from the ground;
in the continuous construction process, if the cable between the first clamping mechanism and the second clamping mechanism is out of the ground, the clamping oil cylinders in the first clamping mechanism and the second clamping mechanism respectively apply acting force f11 to the cable, so that the first clamping mechanism and the second clamping mechanism clamp the cable, the third clamping mechanism does not increase acting force, and the cable between the second clamping mechanism and the third clamping mechanism is in a loose state;
in the continuous construction process, if the cable between the first clamping mechanism and the second clamping mechanism is separated from the ground again, the sliding oil cylinder pushes the second clamping mechanism to move towards the rolling mechanism by a preset distance so that the distance between the second clamping mechanism and the rolling mechanism is d22, at the moment, the moving distance is (d21-d22), the distance between the second clamping mechanism and the third clamping mechanism is (d3+ d21), and the cable between the first clamping mechanism and the second clamping mechanism is separated from the ground by moving the second clamping mechanism;
at this time, (d3+ d21-d22) < (d1+ d21-d 22);
in the continuous construction process, if the cable between the first clamping mechanism and the second clamping mechanism is separated from the ground again, the sliding oil cylinder pushes the second clamping mechanism to move towards the rolling mechanism for a preset distance (d21-d22) so that the cable between the first clamping mechanism and the second clamping mechanism is separated from the ground; if the land is taken off again, the distance is n x (d21-d22) in each moving process until the land is taken off again
The distance between the second clamping mechanism and the third clamping mechanism [ D3+ n x (D21-D22) ] is less than or equal to the distance between the first clamping mechanism and the second clamping mechanism [ D1+ n x (D21-D22) + D ],
where D denotes the width of the rolling mechanism, D1 is the distance between the first clamping mechanism and the rolling mechanism, (D21-D22) denotes the distance of movement of the second clamping mechanism at a time, and n denotes the number of movements of the second clamping mechanism.
Compared with the prior art, the cable overturning device has the technical effects that the second clamping mechanism capable of sliding, the sliding oil cylinder capable of pushing the second clamping mechanism to slide and the corresponding device are arranged, so that the tightness degree of a cable can be adjusted in real time in the transporting and overturning processes, and particularly, when the length of the cable is long or the dragging phenomenon is obvious, the tightness degree of the cable between the first clamping mechanism and the third clamping mechanism is changed, so that the cable is protected.
In particular, in the present invention, when the distance between the second clamping mechanism and the third clamping mechanism is equal to or less than the distance between the first clamping mechanism and the second clamping mechanism, the cable between the second clamping mechanism and the third clamping mechanism may be detached, and at this time, the movement of the second clamping mechanism is stopped, and if the cable is detached again, the construction is stopped.
Particularly, the distance between the three clamping mechanisms is within a preset range by adjusting the position of the second clamping mechanism, so that the cable is prevented from falling off the ground, and meanwhile, the second clamping mechanism can be moved for multiple times to lift the cable off the ground. In the continuous construction process, if the cable between the first clamping mechanism and the second clamping mechanism is separated from the ground again, the sliding oil cylinder pushes the second clamping mechanism to move towards the rolling mechanism by a preset distance so that the distance between the second clamping mechanism and the rolling mechanism is d22, at the moment, the moving distance is (d21-d22), the distance between the second clamping mechanism and the third clamping mechanism is (d3+ d21), and the cable between the first clamping mechanism and the second clamping mechanism is separated from the ground by moving the second clamping mechanism; at this time, (d3+ d21-d22) < (d1+ d21-d 22). In the continuous construction process, if the cable between the first clamping mechanism and the second clamping mechanism is separated from the ground again, the sliding oil cylinder pushes the second clamping mechanism to move towards the rolling mechanism for a preset distance (d21-d22) so that the cable between the first clamping mechanism and the second clamping mechanism is separated from the ground; if the land is disengaged again, the moving distance is n x (d21-d22) each time until the preset condition is satisfied. The invention sets preset conditions according to the mutual distance between the three clamping mechanisms, so that cables between the clamping mechanisms are lifted off the ground.
Particularly, the sliding sheet is arranged to reduce the friction force generated by the movement of the inner pipe and the clamping oil cylinder, and meanwhile, the sliding sheet is arranged to be sleeved on the outer side of the clamping oil cylinder and can also generate a protection effect on a piston rod of the clamping oil cylinder; on the other hand, the clamping oil cylinder is prevented from being deformed in the sliding and rolling processes of the rolling mechanism.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic side view of a cable sheath protection device in an electric power construction process according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a cable sheath protection device in an electric power construction process according to an embodiment of the present invention;
fig. 3 is a schematic top view of a clamping cylinder of the cable sheath protection device in the power construction process according to the embodiment of the present invention.
Detailed Description
Preferred embodiments of the invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the invention, and do not limit the scope of the invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Please refer to fig. 1, which is a schematic side view of a cable sheath protection device in an electric power construction process according to an embodiment of the present invention, the cable sheath protection device includes an inner tube 2 disposed outside a cable 1, the inner tube 2 has a rectangular cross section, and the inner portion is hollow; the four side surfaces of the inner pipe are provided with rolling mechanisms, each rolling mechanism comprises two symmetrical support plates 61 arranged on the outer side edges of the inner pipe and a roller 62 arranged between the support plates 61, and the support plates are provided with a rotating shaft 63 which penetrates through the rollers and can enable the rollers to rotate along the rotating shafts. In this embodiment, be provided with the recess on the outside limit that the inner tube corresponds to make the gyro wheel can rotate relatively in the recess, the side of extension board and recess provides the rotation space for the gyro wheel jointly.
Referring to fig. 2, which is a schematic cross-sectional structure diagram of a cable sheath protection device in an electric power construction process according to an embodiment of the present invention, in this embodiment, a plurality of symmetrical clamping mechanisms are disposed on two sides of a rolling mechanism, wherein a first clamping mechanism 3 is disposed on one side of the rolling mechanism, and a second clamping mechanism 4 and a third clamping mechanism 5 are disposed on the other side of the rolling mechanism, wherein the positions of the first clamping mechanism 3 and the third clamping mechanism 5 on an inner tube are fixed, the second clamping mechanism 4 can horizontally move along the surface of the inner tube, and each clamping cylinder clamps a cable from two symmetrical sides of the inner tube, so that the paired clamping mechanisms clamp the cable.
Continuing to refer to fig. 2, every clamping mechanism is including passing the tight hydro-cylinder 3 of the clamp of the lateral wall of inner tube to and set up the jack catch 31 at the tight hydro-cylinder piston rod end of clamp, jack catch 31 sets up at the inside wall 22 of inner tube 3, and under the drive of the tight hydro-cylinder of clamp, presss from both sides tightly the cable crust from both sides through the jack catch, the jack catch is the card of arc card or other structures, only need to carry out the chucking to the cable can.
Continuing to refer to fig. 2, in the second clamping mechanism 4 of this embodiment, a sliding cylinder seat 53 is disposed on one side close to the rolling mechanism, a sliding cylinder 5 is disposed on the sliding cylinder seat 53, a piston rod end of the sliding cylinder 5 is connected to a push plate 51, the push plate 51 is connected to a clamping cylinder on the second clamping mechanism 4, and the second clamping mechanism can horizontally slide to a preset position along the outer side wall of the inner tube under the pushing of the sliding cylinder 5. The sliding oil cylinder seat is welded on the side wall of the inner pipe, or other fixing modes are adopted.
As shown in fig. 3, a horizontal sliding groove 54 is formed in the outer side wall of the inner tube of this embodiment, where the outer side wall of the inner tube is in contact with the clamping cylinder of the second clamping mechanism 5, a sliding sheet 52 is arranged at the upper end of the horizontal sliding groove 54, a piston rod of the clamping cylinder of the second clamping mechanism 5 penetrates through the sliding sheet 52 and the horizontal sliding groove 54, one end of the push plate 51 is connected to an oil cylinder barrel on the clamping cylinder, the other end of the same side is connected to the sliding sheet 52, and the sliding sheet 52 and the clamping cylinder can move horizontally along the side wall of the inner tube under the pushing action of the sliding cylinder 5. The sliding sheet 52 is arranged in the embodiment to reduce the friction force generated by the movement of the inner tube and the clamping oil cylinder, and meanwhile, the sliding sheet is arranged to be sleeved on the outer side of the clamping oil cylinder and also can generate a protection effect on a piston rod of the clamping oil cylinder; on the other hand, the clamping oil cylinder is prevented from being deformed in the sliding and rolling processes of the rolling mechanism.
Particularly, the cable fixing device is provided with the slidable second clamping mechanism, the sliding oil cylinder capable of pushing the second clamping mechanism to slide and the corresponding device, so that the tightness degree of the cable can be adjusted in real time in the transportation and overturning processes, and particularly, when the length of the cable is long or the dragging phenomenon is obvious, the tightness degree of the cable between the first clamping mechanism and the third clamping mechanism is changed, so that the cable is protected.
Specifically, in the electric power construction process of the embodiment of the invention, in the process of transporting or dragging the cable, the cable can be separated even between two clamping mechanisms, and the cable is difficult to separate from the ground even if two adjacent clamping mechanisms are adjusted. Therefore, in the present embodiment, the distance between the first clamping mechanism and the rolling mechanism is set to d1, the distance between the second clamping mechanism and the rolling mechanism is set to d2, and the distance between the third clamping mechanism and the rolling mechanism is set to (d2+ d 3).
Specifically, during construction, the position of the second clamping mechanism is adjusted to be d31, the distance between the second clamping mechanism and the third clamping mechanism is d1, the distance between the second clamping mechanism and the rolling mechanism is d21, and d1+ d21> d 3; when the second clamping mechanism is in the position, construction is carried out, and in the process, the three clamping mechanisms respectively apply acting force f1 to the cable, so that the cable is in a loose state and is separated from the ground;
in the continuous construction process, if the cable between the first clamping mechanism and the second clamping mechanism is out of the ground, the clamping oil cylinders in the first clamping mechanism and the second clamping mechanism respectively apply acting force f11 to the cable, so that the first clamping mechanism and the second clamping mechanism clamp the cable, the third clamping mechanism does not increase acting force, and the cable between the second clamping mechanism and the third clamping mechanism is in a loose state;
in the continuous construction process, if the cable between the first clamping mechanism and the second clamping mechanism is separated from the ground again, the sliding oil cylinder pushes the second clamping mechanism to move towards the rolling mechanism by a preset distance so that the distance between the second clamping mechanism and the rolling mechanism is d22, at the moment, the moving distance is (d21-d22), the distance between the second clamping mechanism and the third clamping mechanism is (d3+ d21), and the cable between the first clamping mechanism and the second clamping mechanism is separated from the ground by moving the second clamping mechanism;
at this time, (d3+ d21-d22) < (d1+ d21-d 22).
In the continuous construction process, if the cable between the first clamping mechanism and the second clamping mechanism is separated from the ground again, the sliding oil cylinder pushes the second clamping mechanism to move towards the rolling mechanism for a preset distance (d21-d22) so that the cable between the first clamping mechanism and the second clamping mechanism is separated from the ground; if the land is taken off again, the distance is n x (d21-d22) in each moving process until the land is taken off again
The distance between the second clamping mechanism and the third clamping mechanism [ D3+ n x (D21-D22) ] is less than or equal to the distance between the first clamping mechanism and the second clamping mechanism [ D1+ n x (D21-D22) + D ],
where D denotes the width of the rolling mechanism, D1 is the distance between the first clamping mechanism and the rolling mechanism, (D21-D22) denotes the distance of movement of the second clamping mechanism at a time, and n denotes the number of movements of the second clamping mechanism.
Specifically, in the present invention, when the distance between the second clamping mechanism and the third clamping mechanism is equal to or less than the distance between the first clamping mechanism and the second clamping mechanism, the cable between the second clamping mechanism and the third clamping mechanism may come off the ground, and at this time, the movement of the second clamping mechanism is stopped, and if the cable comes off the ground again, the construction is stopped.
Specifically, according to the invention, the distance between the three clamping mechanisms is within a preset range by adjusting the position of the second clamping mechanism, so that the cable is prevented from falling off the ground, and meanwhile, the second clamping mechanism can be moved for multiple times to lift the cable off the ground.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a cable crust protection device among electric power construction process which characterized in that includes: the inner tube is arranged on the outer side of the cable, the section of the inner tube is rectangular, and the inner part of the inner tube is hollow; rolling mechanisms are arranged on four side surfaces of the inner pipe, so that the cables are driven to rotate in the conveying process; the cable clamping device comprises a rolling mechanism, a plurality of clamping mechanisms, a first clamping mechanism and a second clamping mechanism, wherein the two sides of the rolling mechanism are symmetrically provided with the plurality of clamping mechanisms, one side of the rolling mechanism is provided with the paired first clamping mechanism, the other side of the rolling mechanism is sequentially provided with the paired second clamping mechanism and the paired third clamping mechanism, the positions of the first clamping mechanism and the paired third clamping mechanism on an inner tube are fixed, the second clamping mechanism can horizontally move along the surface of the inner tube, each clamping mechanism comprises a clamping oil cylinder, and each clamping oil cylinder clamps a cable from the two symmetrical sides of the inner tube so that the paired clamping mechanisms clamp the cable; the second clamping mechanism is close to one side of the rolling mechanism and is provided with a sliding oil cylinder seat, a sliding oil cylinder is arranged on the sliding oil cylinder seat, the piston rod end of the sliding oil cylinder is connected with a push plate, the push plate is connected with a clamping oil cylinder on the second clamping mechanism, and the second clamping mechanism can slide horizontally to a preset position along the outer side wall of the inner tube under the pushing of the sliding oil cylinder.
2. The cable sheath protecting device for electric power construction according to claim 1, wherein a horizontal sliding groove is formed on an outer side wall of the inner tube at a contact position with the clamping cylinder of the second clamping mechanism, and a sliding piece is arranged at an upper end of the horizontal sliding groove.
3. The cable sheath protecting device in the electric power construction process according to claim 2, wherein a piston rod of the clamping cylinder of the second clamping mechanism passes through the sliding piece and the horizontal sliding groove.
4. The cable sheath protection device in the electric power construction process according to claim 3, wherein one end of the push plate is connected with an oil cylinder barrel on a clamping oil cylinder of the second clamping mechanism, and the other end of the push plate on the same side is connected with the sliding sheet, and the sliding sheet and the clamping oil cylinder can horizontally move along the side wall of the inner pipe under the pushing action of the sliding oil cylinder.
5. The cable sheath protection device in the electric power construction process as claimed in claim 3, wherein each clamping mechanism further comprises a clamping jaw arranged at the piston rod end of the clamping cylinder, the clamping jaw is arranged on the inner side wall of the inner tube, and the cable sheath is clamped from two sides through the clamping jaw under the driving of the clamping cylinder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010138842.9A CN111313312B (en) | 2020-03-03 | 2020-03-03 | Cable sheath protection device and protection method in electric power construction process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010138842.9A CN111313312B (en) | 2020-03-03 | 2020-03-03 | Cable sheath protection device and protection method in electric power construction process |
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| CN111313312A CN111313312A (en) | 2020-06-19 |
| CN111313312B true CN111313312B (en) | 2021-03-05 |
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| CN112600129A (en) * | 2020-12-22 | 2021-04-02 | 重庆凯创荣智能科技有限公司 | Inspection structure for power system and use method |
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| CN204045249U (en) * | 2014-07-25 | 2014-12-24 | 国家电网公司 | Cable sheath protective device in a kind of power construction process of convenient disassembly |
| CN204046046U (en) * | 2014-07-25 | 2014-12-24 | 国家电网公司 | Cable sheath protective device in a kind of power construction process |
| CN110224356A (en) * | 2019-06-27 | 2019-09-10 | 中建八局轨道交通建设有限公司 | Packaged type cable, spool bracket and its application method |
| CN209805262U (en) * | 2019-06-12 | 2019-12-17 | 天津市光宇电力工程安装有限公司 | Protection device for laying power cable |
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| JPS63250605A (en) * | 1987-04-08 | 1988-10-18 | Showa Electric Wire & Cable Co Ltd | Method for leading in optical fiber cable into overhead ground wire |
| CN104158110A (en) * | 2014-07-25 | 2014-11-19 | 国网河南省电力公司南阳供电公司 | Protection device and protection method for cable sheath in power construction process |
| CN204045249U (en) * | 2014-07-25 | 2014-12-24 | 国家电网公司 | Cable sheath protective device in a kind of power construction process of convenient disassembly |
| CN204046046U (en) * | 2014-07-25 | 2014-12-24 | 国家电网公司 | Cable sheath protective device in a kind of power construction process |
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