CN112398045A - Ground wire lifter and ground wire accessory installation method - Google Patents
Ground wire lifter and ground wire accessory installation method Download PDFInfo
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- CN112398045A CN112398045A CN202011164762.7A CN202011164762A CN112398045A CN 112398045 A CN112398045 A CN 112398045A CN 202011164762 A CN202011164762 A CN 202011164762A CN 112398045 A CN112398045 A CN 112398045A
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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
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
Abstract
The application relates to the technical field of overhead transmission line installation, in particular to a ground wire lifter and a ground wire accessory installation method, which comprises a cross rod, a tripod, a wire lifting hook and a chain block; the wire lifting hook is arranged at the first end of the cross rod, the chain block is arranged at the second end of the cross rod, and the tripod is rotatably arranged in the middle of the cross rod; the tripod comprises a first connecting rod, a second connecting rod and a third connecting rod which are connected in sequence, and the second connecting rod is positioned on one side of the tripod, which is far away from the cross rod; a first angle steel grasper and a second angle steel grasper are respectively arranged on the first connecting rod and the third connecting rod; and cross arm connecting holes connected with the ground wire connecting holes of the cross arms are formed in the two sides of the second connecting rod. This application need not chain block and tightens up the process of atress and relax and unload the power many times to whole process only needs a chain block, has solved the inconvenient technical problem of ground wire annex installation among the prior art effectively.
Description
Technical Field
The application relates to the technical field of overhead transmission line installation, in particular to a ground wire lifter and a ground wire accessory installation method.
Background
The ground wire, also called lightning conductor, is erected on the top of the overhead line and is a wire directly communicated with the ground on the high-voltage and ultrahigh-voltage lines. Due to the shielding of the ground wire to the wire and the coupling effect between the wire and the ground wire, the chance of direct lightning striking the wire can be reduced. When the tower is struck by lightning, a part of lightning current can be shunted through the ground wire, so that the potential of the tower top is reduced, and the lightning resistance level is improved.
In the construction and construction link of overhead lines, when the ground wires are unfolded, the ground wires under the cross arms are arranged on the paying-off tackle, accessory hardware such as pre-twisted wires, suspension wire clamps, vibration dampers, ground wires and the like need to be installed on the ground wires, the ground wires need to be lifted, the dead weight of the ground wires is shared on the cross arms, the ground wire tackle is dismounted, and the installation work of the accessories is carried out.
At present, the installation method of the overhead line ground wire accessory of more than 220kV mainly adopts a hand-operated hoist method, and the specific operation is as follows: the hand chain block, the steel wire rope and the shackle are fixed on a cross arm on one side, the ground wire is tightened, the preformed armor rods are installed on the other side of the cross arm, the cross arm on one side where the preformed armor rods are installed is connected with the hand chain block, the ground wire is tightened, the hand chain block and the ground wire are loosened in operation, the preformed armor rods are installed, and installation work of other accessory hardware fittings is carried out after the preformed armor rods are installed.
It can be seen from the existing construction method that two chain blocks are needed in the process of installing the preformed armor rods, and the process of tightening, stressing and releasing the chain blocks and the ground wire needs to be carried out twice, the process is complicated, two persons are needed to operate simultaneously, and the chain blocks are stressed with one side of the cross arm, so that the uncertainty of the risk is increased.
Disclosure of Invention
In view of this, an object of the present application is to provide a ground wire lifter and a method for installing a ground wire accessory, which effectively solve the technical problem in the prior art that the installation of the ground wire accessory is inconvenient.
In order to achieve the purpose, the application provides the following technical scheme:
a ground wire lifting device comprises a cross rod, a tripod, a wire lifting hook and a chain block;
the wire lifting hook is arranged at the first end of the cross rod, the chain block is arranged at the second end of the cross rod, and the tripod is rotatably arranged in the middle of the cross rod;
the tripod comprises a first connecting rod, a second connecting rod and a third connecting rod which are connected in sequence, and the second connecting rod is positioned on one side of the tripod far away from the cross rod;
a first angle steel grasper and a second angle steel grasper are respectively arranged on the first connecting rod and the third connecting rod;
and cross arm connecting holes connected with the ground wire connecting holes of the cross arms are formed in the two sides of the second connecting rod.
Preferably, in the above ground wire lifter, the tripod further comprises a triangular support;
the first angle of the triangular support is hinged to the cross rod, and the second angle and the third angle of the triangular support are respectively connected with the first end of the first connecting rod and the first end of the third connecting rod.
Preferably, in the ground wire lifter, a first end of the third connecting rod is detachably connected to the triangular support;
and the second end of the first connecting rod and the second end of the third connecting rod are respectively hinged with the two ends of the second connecting rod.
Preferably, in the above ground wire lifter, the tripod is in the shape of an isosceles triangle.
Preferably, in the ground wire lifter, the first connecting rod is provided with a plurality of first adjusting holes distributed along the length direction of the first connecting rod, and the first angle steel grasper is mounted on the first connecting rod through a bolt and the first adjusting holes;
the third connecting rod is provided with a plurality of second adjusting holes distributed along the length direction of the third connecting rod, and the second angle steel grasper is installed on the third connecting rod through a bolt and the second adjusting holes.
Preferably, in the ground wire lifter, the two cross arm connecting holes are symmetrically arranged at two sides of the second connecting rod along the length direction.
Preferably, in the ground wire lifter, the number of the cross arm connecting holes on the same side of the second connecting rod is multiple, and the multiple cross arm connecting holes are distributed along the length direction of the second connecting rod.
Preferably, in the above ground wire lifter, the wire lifting hook is hinged to the first end of the cross bar by a first connecting member.
Preferably, in the above ground wire lifter, the chain block is hinged to the second end of the cross bar through a second connecting member.
A method of installing a ground wire accessory, comprising the steps of:
s1, fixedly connecting the tripod with the angle steel on the left side and the right side of the cross arm through the first angle steel grasper and the second angle steel grasper;
s2, a fixing bolt penetrates through the ground wire connecting hole on the cross arm and the cross arm connecting hole on the second connecting rod, so that the second connecting rod is fixedly connected with the cross arm;
s3, hooking the ground wire on one side through a wire lifting hook, hooking the ground wire on the other side through a hoist hook of the chain block, and lifting the ground wire through a hanging chain for tightening the chain block;
and S4, when the ground wire is lifted to a certain height, the load of the ground wire is transferred to the cross arm of the tower through the ground wire lifting device, and then the installation operation of the ground wire accessories can be carried out.
The application provides a line ware is carried to ground wire, and the beneficial effect of this application is:
(1) the aerial work process can be optimized, the workload of workers is reduced, the workers can be optimized from two-person simultaneous operation to one-person simultaneous operation, the distance between the ground wire hanging points is enlarged by adopting a tripod and a cross rod, the hanging points at the two ends of the cross rod can provide sufficient installation space for the pre-twisted wire, the processes of tightening stress and loosening stress by a chain block for multiple times are not needed, only one chain block is needed in the whole process, and the technical problem that the ground wire accessories are inconvenient to install in the prior art is effectively solved;
(2) through the tripod that stability is good, can solve the unilateral atress problem of cross arm bottom plate, the tripod is transversely placed on the bottom plate of cross arm for angle steel about the cross arm bottom plate can undertake the ground wire dead weight jointly, makes the atress more reasonable, is favorable to guaranteeing the security of staff's operation.
The application also provides a ground wire accessory installation method, which can solve the problem that the construction method of changing the stress of the chain block for multiple times is redundant and repeated in the prior art, and can complete the work only by tightening the chain block once, thereby effectively improving the working efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an earth wire lifter provided in an embodiment of the present application;
fig. 2 is a flowchart illustrating steps of a method for installing a ground wire accessory according to an embodiment of the present application.
In the figure:
the device comprises a cross rod 1, a tripod 2, a first connecting rod 21, a second connecting rod 22, a third connecting rod 23, a wire lifting hook 3, a first connecting piece 31, a steel wire rope 32, a chain block 4, a second connecting piece 41, a block hook 42, a cross arm connecting hole 5, a fixing bolt 51, a triangular support 6, a first angle steel grasper 7, a first adjusting hole 71, a second angle steel grasper 8 and a second adjusting hole 81.
Detailed Description
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 a part of the embodiments of the present application, and not all of the 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.
In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are used broadly and are defined as, for example, a fixed connection, an exchangeable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements, unless otherwise explicitly stated or limited. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.
The ground wire, also called lightning conductor, is erected on the top of the overhead line and is a wire directly communicated with the ground on the high-voltage and ultrahigh-voltage lines. Due to the shielding of the ground wire to the wire and the coupling effect between the wire and the ground wire, the chance of direct lightning striking the wire can be reduced. When the tower is struck by lightning, a part of lightning current can be shunted through the ground wire, so that the potential of the tower top is reduced, and the lightning resistance level is improved. In the construction and construction link of overhead lines, when the ground wires are unfolded, the ground wires under the cross arms are arranged on the paying-off tackle, accessory hardware such as pre-twisted wires, suspension wire clamps, vibration dampers, ground wires and the like need to be installed on the ground wires, the ground wires need to be lifted, the dead weight of the ground wires is shared on the cross arms, the ground wire tackle is dismounted, and the installation work of the accessories is carried out. At present, the installation method of the overhead line ground wire accessory of more than 220kV mainly adopts a hand-operated hoist method, and the specific operation is as follows: the hand chain block, the steel wire rope and the shackle are fixed on a cross arm on one side, the ground wire is tightened, the preformed armor rods are installed on the other side of the cross arm, the cross arm on one side where the preformed armor rods are installed is connected with the hand chain block, the ground wire is tightened, the hand chain block and the ground wire are loosened in operation, the preformed armor rods are installed, and installation work of other accessory hardware fittings is carried out after the preformed armor rods are installed. It can be seen from the existing construction method that two chain blocks are needed in the process of installing the preformed armor rods, and the process of tightening, stressing and releasing the chain blocks and the ground wire needs to be carried out twice, the process is complicated, two persons are needed to operate simultaneously, and the chain blocks are stressed with one side of the cross arm, so that the uncertainty of the risk is increased. The embodiment provides a ground wire lifter, which effectively solves the technical problem that a ground wire accessory is inconvenient to mount in the prior art.
Referring to fig. 1, an embodiment of the present application provides a ground wire lifter, including a cross bar 1, a tripod 2, a wire lifting hook 3 and a chain block 4; the wire lifting hook 3 is arranged at the first end of the cross rod 1, the chain block 4 is arranged at the second end of the cross rod 1, and the tripod 2 is rotatably arranged in the middle of the cross rod 1; the tripod 2 comprises a first connecting rod 21, a second connecting rod 22 and a third connecting rod 23 which are connected in sequence, and the second connecting rod 22 is positioned on one side of the tripod 2 far away from the cross rod 1; the first angle steel grasper 7 and the second angle steel grasper 8 are respectively arranged on the first connecting rod 21 and the third connecting rod 23; both sides of the second connecting rod 22 are provided with cross arm connecting holes 5 connected with the ground wire connecting holes of the cross arms.
More specifically, in order to ensure convenient transportation and installation, the tripod 2, the wire lifting hook 3 and the chain block 4 are detachably connected with the cross rod 1; the first connecting rod 21, the second connecting rod 22 and the third connecting rod 23 are sequentially connected to form a triangle, the first connecting rod 21 and the third connecting rod 23 are respectively arranged on two sides of the middle part of the cross rod 1, and a connecting line of the first angle steel grasper 7 and the second angle steel grasper 8 is horizontal. When the tower climbing device works, a station team is required to confirm safety technical operation bottom crossing and attention points, and then a worker climbs the tower; when the staff on the tower reaches the corresponding position, the staff on the ground transfers the tripod 2, the cross bar 1, the wire lifting hook 3 and the chain block 4 upwards; the ground wire lifter is fixedly connected with the angle steel on the left side and the right side of the cross arm by a worker on the tower through the first angle steel grasper 7 and the second angle steel grasper 8, and two ground wire connecting holes on the cross arm are fixedly connected with two cross arm connecting holes 5 of the second connecting rod 22 through the fixing bolt 51; then the wire lifting hook 3 hooks the ground wire on one side, the hoist hook 42 hooks the ground wire on the other side, and the ground wire is lifted by tightening the hanging chain of the chain block 4; when the ground wire is lifted to a required position, the cross rod 1 is in a horizontal state, so that the load of the ground wire is transferred to the ground wire lifter and the cross arm, the ground wire tackle is removed, and then hardware fittings such as pre-twisted wires, suspension clamps and the like are installed; after the hardware fitting is installed, loosening a hanging chain of the chain block 4, disassembling the tripod 2 and connecting a power line; the staff under the tower shifts the tripod 2, the cross bar 1, the wire lifting hook 3, the chain block 4 and other tools downwards, checks the installation result and completes the whole operation.
The beneficial effect of this application is:
(1) the aerial work process can be optimized, the workload of workers is reduced, the workers can be optimized from two-person simultaneous operation to one-person simultaneous operation, the distance between the ground wire hanging points is enlarged by adopting a tripod 2 and a cross rod 1, the hanging points at the two ends of the cross rod 1 can provide sufficient installation space for the preformed armor rods, the process of tightening stress and loosening stress by a chain block 4 for multiple times is not needed, and only one chain block 4 is needed in the whole process, so that the technical problem that the ground wire accessories are inconvenient to install in the prior art is effectively solved;
(2) through the tripod 2 that stability is good, can solve the unilateral atress problem of cross arm bottom plate, tripod 2 transversely places on the bottom plate of cross arm for the angle steel about the cross arm bottom plate can undertake the ground wire dead weight jointly, makes the atress more reasonable, is favorable to guaranteeing the security of staff's operation.
Further, in the present embodiment, the tripod 2 further includes a tripod base 6; the first angle of triangle support 6 is articulated with horizontal pole 1, and triangle support 6 can dismantle with horizontal pole 1 and be connected, and the second angle and the third angle of triangle support 6 are connected with the first end of first connecting rod 21, the first end of third connecting rod 23 respectively. The triangular support 6 is in a regular triangle shape, which is beneficial to ensuring that three corners of the triangular support 6 can be more conveniently connected with other components. Set up like this and make the both ends of horizontal pole 1 can be round the pin joint with triangular support 6 and go on tilting from top to bottom to carry line hook 3 and calabash couple 42 to catch on the both sides of same ground wire respectively, then through the chain sling of tightening up calabash couple 42 so that shift the load of ground wire to ground wire and carry on line ware and the cross arm, thereby make the angle steel about the cross arm bottom plate can bear the dead weight of ground wire jointly, make the atress more reasonable, security when being favorable to guaranteeing the staff operation.
More specifically, the triangular support 6 can support the triangular support 2, so that the cross rod 1 can swing left and right by about 60 degrees, the wire lifting hook 3 is hooked on the ground wire in the working process, and when the wire lifting hook is hooked, the cross rod 1 is in a state of being low at the left and high at the right, and the working requirement can be met in a swing range of 30-45 degrees.
Further, in the present embodiment, the first end of the third connecting rod 23 is detachably connected to the triangular support 6; the second end of the first connecting rod 21 and the second end of the third connecting rod 23 are respectively hinged with the two ends of the second connecting rod 22. Set up like this and make the first end of third connecting rod 23 can follow triangle support 6 and dismantle, then articulated first connecting rod 21, second connecting rod 22, the third connecting rod 23 who connects in proper order can fold together, can reduce the occupation space when tripod 2 is idle effectively, conveniently transports and stores tripod 2.
More specifically, the first end of the first connecting rod 21 can be detachably connected with the triangular support 6, the second end of the first connecting rod 21 and the second end of the third connecting rod 23 can also be detachably connected with the two ends of the second connecting rod 22 respectively, so that the triangular support 6, the first connecting rod 21, the second connecting rod 22 and the third connecting rod 23 can be mutually detached, the occupied space for the tripod 2 to be idle can be reduced, and the tripod 2 can be conveniently transported and stored.
Further, in the present embodiment, the tripod 2 has an isosceles triangle shape, the first connecting rod 21 and the third connecting rod 23 are symmetrically disposed with respect to the second connecting rod 22, and the first angle steel grasper 7 and the second angle steel grasper 8 are symmetrically disposed with respect to the second connecting rod 22, which is advantageous in that the tripod 2 can be mounted on the bottom plate of the cross arm with left and right balance; two ground wire installation positions are symmetrically arranged relative to the second connecting rod 22, so that when the arrangement is favorable for transferring the load of the ground wire to the tripod 2 and the cross arm, the left side and the right side of the tripod 2 can be uniformly stressed to keep balance, the stress is more reasonable, and the safety of workers during operation is favorably ensured.
Further, in the present embodiment, the first connecting rod 21 is provided with a plurality of first adjusting holes 71 distributed along the length direction of the first connecting rod 21, and the first angle steel grasper 7 is mounted on the first connecting rod 21 through a bolt and the first adjusting holes 71; the third connecting rod 23 is provided with a plurality of second adjusting holes 81 distributed along the length direction of the third connecting rod 23, and the second angle steel grasper 8 is mounted on the third connecting rod 23 through bolts and the second adjusting holes 81. The position of the first angle steel grasper 7 on the first connecting rod 21 can be conveniently adjusted by the staff through the plurality of first adjusting holes 71, so that the first angle steel grasper 7 can be in a proper height position, and the first angle steel grasper 7 can be better fixedly connected with the angle steel of the cross arm; the second angle iron grasper 8 can also be easily adjusted by the operator via the second adjusting holes 81 in such a way that the second angle iron grasper 8 can be positioned at a suitable height for a better fixed connection of the second angle iron grasper 8 to the angle iron of the cross arm.
More specifically, the plurality of first adjustment holes 71 and the plurality of second adjustment holes 81 are symmetrically arranged about the symmetry axis of the tripod 2, so that when the adjustment and installation are performed, the first angle steel grasper 7 and the second angle steel grasper 8 can be adjusted to the same height at the same time, the first angle steel grasper 7 and the second angle steel grasper 8 can be conveniently located on the same straight line with the fixed points of the left and right angle steels of the cross arm, and the whole tripod 2 can be horizontally installed on the power tower.
Further, in the present embodiment, two cross arm coupling holes 5 are symmetrically provided at both sides of the second connecting rod 22 in the length direction. The second connecting rod 22 and the cross arm are fixed together by the fixing bolt 51 penetrating through the cross arm connecting hole 5 on the second connecting rod 22 and the ground wire connecting hole on the cross arm, and the cross arm connecting holes 5 on the two sides which are symmetrically arranged can ensure that the second connecting rod 22 is fixed on the cross arm in a horizontal state and left-right stress balance manner, and ensure that the load gravity center of the ground wire can be just positioned on the symmetrical axis of the tripod 2 in the wire lifting operation process.
Further, in the present embodiment, the plurality of cross arm connecting holes 5 on the same side of the second connecting rod 22 are provided, and the plurality of cross arm connecting holes 5 are distributed along the length direction of the second connecting rod 22. The fixed connection range of the second connecting rod 22 and the cross arm can be effectively increased through the arrangement of the cross arm connecting holes 5, so that the connecting position of the second connecting rod 22 and the cross arm is adjusted, the second connecting rod 22 is located at a proper position, the second connecting rod 22 is connected with the cross arm in a left-right balance mode, the stress is more reasonable, and the safety of workers during operation is guaranteed.
More specifically, since the cross arm connecting holes 5 on both sides are connecting operation positions of the tripod 2 and the cross arm, the first adjusting holes 71 and the second adjusting holes 81 are connecting operation positions of the first angle steel grasper 7 and the second angle steel grasper 8 with the angle steel of the cross arm, respectively, and the cross arm connecting holes 5 on both sides can be located on the same vertical line with the first adjusting holes 71 and the second adjusting holes 81, respectively, the arrangement can enable each connecting operation position to keep relative balance up and down along the vertical direction, which is beneficial to ensuring that the whole tripod 2 can be stably and balancedly fixed on the cross arm.
Further, in the present embodiment, the wire lifting hook 3 is hinged to the first end of the crossbar 1 by the first connecting member 31. Articulated first connecting piece 31 and the horizontal pole 1 that sets up can be when carrying out the line operation of carrying out, allow to carry and produce between line hook 3 and the horizontal pole 1 and rotate, be favorable to making things convenient for line hook 3 to be in better position throughout and catch on the ground wire, be favorable to reducing staff's work load.
More specifically, the first connector 31 may be detachably connected to the crossbar 1; the top of the wire lifting hook 3 is provided with a steel wire rope sleeve, the steel wire rope sleeve comprises a telescopic steel wire rope 32, the other end of the steel wire rope 32 is connected with the first connecting piece 31, the steel wire rope 32 can effectively prolong the application range of the wire lifting hook 3, and the normal operation of ground wire lifting operation is guaranteed.
Further, in this embodiment, the chain block 4 is hinged to the second end of the cross bar 1 through a second connecting member 41. The second connecting piece 41 and the cross rod 1 which are hinged to each other can allow the chain block 4 and the cross rod 1 to rotate when the line lifting operation is carried out, so that the chain block 4 can be conveniently located in a better position all the time, a worker can conveniently tighten up a chain of the chain block 4, and the workload of the worker can be reduced.
The embodiment also provides a method for installing a ground wire accessory, please refer to fig. 2, which includes the following steps:
s1, fixedly connecting the tripod 2 with the angle steels on the left and right sides of the cross arm through the first angle steel grasper 7 and the second angle steel grasper 8;
s2, the second connecting rod 22 is fixedly connected with the cross arm by the fixing bolt 51 penetrating through the ground wire connecting hole on the cross arm and the cross arm connecting hole 5 on the second connecting rod 22;
s3, hooking the ground wire on one side through the wire lifting hook 3, hooking the ground wire on the other side through the hoist hook 42 of the chain block 4, and lifting the ground wire through the hanging chain for tightening the chain block 4;
and S4, when the ground wire is lifted to a certain height, the load of the ground wire is transferred to the cross arm of the tower through the ground wire lifting device, and then the installation operation of the ground wire accessories can be carried out.
More specifically, the problem of redundancy and repetition of the construction method of replacing the hand chain block 4 for multiple times of stress in the prior art can be solved through the ground wire accessory installation method, the work can be completed only by tightening the hand chain block 4 once, and the work efficiency is effectively improved.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A ground wire lifting device is characterized by comprising a cross rod, a tripod, a wire lifting hook and a chain block;
the wire lifting hook is arranged at the first end of the cross rod, the chain block is arranged at the second end of the cross rod, and the tripod is rotatably arranged in the middle of the cross rod;
the tripod comprises a first connecting rod, a second connecting rod and a third connecting rod which are connected in sequence, and the second connecting rod is positioned on one side of the tripod far away from the cross rod;
a first angle steel grasper and a second angle steel grasper are respectively arranged on the first connecting rod and the third connecting rod;
and cross arm connecting holes connected with the ground wire connecting holes of the cross arms are formed in the two sides of the second connecting rod.
2. The ground wire lifter of claim 1, wherein the tripod further comprises a triangular support;
the first angle of the triangular support is hinged to the cross rod, and the second angle and the third angle of the triangular support are respectively connected with the first end of the first connecting rod and the first end of the third connecting rod.
3. The ground wire lifter according to claim 2, wherein the first end of the third connecting rod is detachably connected to the triangular support;
and the second end of the first connecting rod and the second end of the third connecting rod are respectively hinged with the two ends of the second connecting rod.
4. The ground wire lifter of claim 1, wherein the tripod is in the shape of an isosceles triangle.
5. The ground wire lifter according to claim 1, wherein the first connecting rod is provided with a plurality of first adjusting holes distributed along a length direction of the first connecting rod, and the first angle steel grasper is mounted on the first connecting rod through a bolt and the first adjusting holes;
the third connecting rod is provided with a plurality of second adjusting holes distributed along the length direction of the third connecting rod, and the second angle steel grasper is installed on the third connecting rod through a bolt and the second adjusting holes.
6. The ground wire lifter according to claim 1, wherein two of the cross arm coupling holes are symmetrically provided at both sides of the second connecting rod in a length direction.
7. The ground wire lifter according to claim 6, wherein the plurality of cross arm connecting holes are formed on the same side of the second connecting rod, and the plurality of cross arm connecting holes are distributed along a length direction of the second connecting rod.
8. The ground wire lifter of claim 1, wherein the wire lifter hook is hingedly connected to the first end of the crossbar by a first connector.
9. The ground wire lifter of claim 1, wherein the chain block is hinged to the second end of the crossbar by a second connector.
10. A method of installing a ground wire accessory, comprising the steps of:
s1, fixedly connecting the tripod with the angle steel on the left side and the right side of the cross arm through the first angle steel grasper and the second angle steel grasper;
s2, a fixing bolt penetrates through the ground wire connecting hole on the cross arm and the cross arm connecting hole on the second connecting rod, so that the second connecting rod is fixedly connected with the cross arm;
s3, hooking the ground wire on one side through a wire lifting hook, hooking the ground wire on the other side through a hoist hook of the chain block, and lifting the ground wire through a hanging chain for tightening the chain block;
and S4, when the ground wire is lifted to a certain height, the load of the ground wire is transferred to the cross arm of the tower through the ground wire lifting device, and then the installation operation of the ground wire accessories can be carried out.
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| CN202011164762.7A CN112398045B (en) | 2020-10-27 | 2020-10-27 | Ground wire lifter and ground wire accessory installation method |
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| CN202011164762.7A CN112398045B (en) | 2020-10-27 | 2020-10-27 | Ground wire lifter and ground wire accessory installation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113746033A (en) * | 2021-09-07 | 2021-12-03 | 常兵 | A bury underground plough mechanism for submarine cable lays |
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| CN203983864U (en) * | 2014-08-05 | 2014-12-03 | 国家电网公司 | 500kV overhead transmission line tangent tower lightning conducter lifting operation device |
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| CN206789984U (en) * | 2017-06-21 | 2017-12-22 | 国网浙江省电力公司杭州供电公司 | A kind of ground wire lifting device |
| CN108683121A (en) * | 2018-05-29 | 2018-10-19 | 国家电网公司 | Lightning conducter suspension clamp replaces tool |
| CN111483951A (en) * | 2020-04-02 | 2020-08-04 | 国网安徽省电力有限公司淮南供电公司 | Auxiliary grounding wire hanging and dismounting operation platform applied to voltage class of 110kV and above |
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| CN201278452Y (en) * | 2008-09-12 | 2009-07-22 | 于观武 | Support frame |
| CN202423997U (en) * | 2011-12-14 | 2012-09-05 | 河南省电力公司郑州供电公司 | Combined ground wire lifting mechanism |
| CN203645242U (en) * | 2013-11-25 | 2014-06-11 | 国网山东省电力公司泰安供电公司 | Installation and lifting device for PGW optical cable accessory |
| CN203983864U (en) * | 2014-08-05 | 2014-12-03 | 国家电网公司 | 500kV overhead transmission line tangent tower lightning conducter lifting operation device |
| CN205960567U (en) * | 2016-08-26 | 2017-02-15 | 白立君 | Novel flexible adjustable electric power support |
| CN206789984U (en) * | 2017-06-21 | 2017-12-22 | 国网浙江省电力公司杭州供电公司 | A kind of ground wire lifting device |
| CN108683121A (en) * | 2018-05-29 | 2018-10-19 | 国家电网公司 | Lightning conducter suspension clamp replaces tool |
| CN111483951A (en) * | 2020-04-02 | 2020-08-04 | 国网安徽省电力有限公司淮南供电公司 | Auxiliary grounding wire hanging and dismounting operation platform applied to voltage class of 110kV and above |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113746033A (en) * | 2021-09-07 | 2021-12-03 | 常兵 | A bury underground plough mechanism for submarine cable lays |
| CN113746033B (en) * | 2021-09-07 | 2022-11-01 | 浙江启明电力集团有限公司 | A bury underground plough mechanism for submarine cable lays |
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| CN112398045B (en) | 2022-02-15 |
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