CN113266266B - Transmission line overhauls uses cat ladder - Google Patents
Transmission line overhauls uses cat ladder Download PDFInfo
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- CN113266266B CN113266266B CN202110598784.2A CN202110598784A CN113266266B CN 113266266 B CN113266266 B CN 113266266B CN 202110598784 A CN202110598784 A CN 202110598784A CN 113266266 B CN113266266 B CN 113266266B
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- plate
- transmission line
- web
- overhauling
- power transmission
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/34—Ladders attached to structures, such as windows, cornices, poles, or the like
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/48—Ladder heads; Supports for heads of ladders for resting against objects
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/50—Joints or other connecting parts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Ladders (AREA)
Abstract
The invention discloses a ladder stand for overhauling a power transmission line, and relates to the technical field of power maintenance equipment. The ladder stand sequentially comprises a first fixing unit, a second fixing unit and a supporting frame from right to left. First fixed unit include punch holder and lower plate, the fixed unit of second include the web, the preceding, the back both ends of web are provided with the pterygoid lamina respectively, the pterygoid lamina on be provided with the pull rod, the one end of pull rod with pterygoid lamina slip articulated, the other end of pull rod is fixed and is provided with the connecting block, the connecting block on be provided with and be used for the top tight the tie bolt of lower plate. The lower side face of the web plate is provided with a limiting block, the upper side face of the web plate is provided with a vertical plate, the right end of the support frame is hinged to the vertical plate, the left end of the support frame is provided with a support block, and the left side face of the support block is provided with a wedging inclined plane. This cat ladder not only can reduce the damage to insulating vase, and simple to operate.
Description
Technical Field
The invention relates to the technical field of power maintenance equipment, in particular to a ladder stand for overhauling a power transmission line.
Background
The iron tower is generally used for erecting a power transmission lead at high altitude, and after the power transmission lead is hung on the iron tower, at present, if the power transmission lead has a fault, the power transmission lead needs to be overhauled. The maintainer can step on one row of insulator vase cluster through the foot, moves to the wire side from the iron tower side, overhauls the transmission conductor, gets into the in-process that the transmission conductor was examined and repaired in the department trampling insulating vase, has the defect that causes the damage to insulating vase easily.
Disclosure of Invention
Aiming at the problems, the invention provides the crawling ladder for the maintenance of the power transmission line, which not only can reduce the damage to the insulating porcelain insulator in the process of maintaining the circuit, but also is convenient to install.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a ladder stand for overhauling a power transmission line sequentially comprises a first fixing unit, a second fixing unit and a supporting frame from right to left;
the first fixing unit comprises an upper clamping plate and a lower clamping plate which are used for clamping and connecting the hanging plate;
the second fixing unit comprises a mounting frame, the mounting frame comprises a web plate, wing plates are respectively arranged at the front end and the rear end of the web plate, a pull rod is arranged on each wing plate, one end of each pull rod is slidably hinged with each wing plate, a connecting block is fixedly arranged at the other end of each pull rod, and a tensioning bolt for jacking the lower clamping plate is arranged on each connecting block;
the lower side face of the web plate is provided with a limiting block, the upper side face of the web plate is provided with a vertical plate, the right end of the support frame is hinged to the vertical plate, the left end of the support frame is provided with a support block, and the left side face of the support block is provided with a wedging inclined plane.
Furthermore, pull rods are arranged on the inner side and the outer side of the wing plate, the connecting block is located between the two pull rods, the two ends of the connecting block are fixedly connected with the pull rods respectively, and a tensioning bolt is arranged between the two pull rods on the connecting block.
Furthermore, all be provided with the deflector on the medial surface of pterygoid lamina and the lateral surface, the deflector on slide and be provided with the slider, the pull rod with the slider articulated mutually.
Further, the guide plate is parallel to the web plate.
Furthermore, the front side and the rear side of the limiting block are symmetrically provided with first pressing inclined planes with low inner parts and high outer parts.
Furthermore, the mounting bracket in be provided with the compact heap, be provided with on the last side of compact heap and compress tightly the groove, the compact heap on be located the both sides that compress tightly the groove are provided with the third double-screw bolt respectively, the third double-screw bolt pass the web extend to the top of web, the third double-screw bolt on be provided with third lock nut, the preceding, the back both sides that compress tightly the groove are provided with the second of interior low external height respectively and compress tightly the inclined plane.
Furthermore, the supporting block is fixedly connected with the supporting frame through a fixing bolt.
Furthermore, a positioning hole is formed in the right side face of the lower clamping plate, and a positioning shaft matched with the positioning hole is coaxially arranged on the end face of the tensioning bolt.
Further, be provided with the location boss on the downside of lower plate, the locating hole set up in the location boss on.
Furthermore, a hand wheel is fixedly arranged on the tension bolt.
The invention has the beneficial effects that:
1. the ladder stand can be erected above the insulator string, so that the insulator string is prevented from being directly trampled in the overhauling process, and the insulator porcelain bottle is prevented from being damaged.
2. The ladder stand is convenient to install, and the installation process can be directly and manually installed without any operating tool.
3. The ladder stand can adapt to insulator strings with different verticality and has good universality.
4. The mounting bracket of this cat ladder pass through the pull rod with fixed set up in connect the first fixed unit on the link plate and form a rigid whole, promptly the mounting bracket through first fixed unit indirect with iron tower fixed connection, like this the mounting bracket be in absolute fixed state, and then the support frame be in absolute fixed Zhang Tian, at the in-process that uses, when the people stands on the support frame, just can not take place to rock because of the focus is inclined to one side, improve the security of operation.
Drawings
Fig. 1 is a schematic perspective view of a ladder stand;
FIG. 2 is an enlarged schematic view of portion A of FIG. 1;
FIG. 3 is a schematic perspective view of a ladder stand;
FIG. 4 is an enlarged schematic view of the portion B in FIG. 3;
FIG. 5 is an enlarged schematic view of the portion C in FIG. 3;
FIG. 6 is an enlarged schematic view of a portion D of FIG. 3;
FIG. 7 is an enlarged schematic view of section E of FIG. 3;
FIG. 8 is a front view of the ladder;
FIG. 9 is a top view of the ladder;
FIG. 10 isbase:Sub>A sectional view A-A of FIG. 8;
FIG. 11 is a cross-sectional view taken along line B-B of FIG. 8;
FIG. 12 is a cross-sectional view taken at C-C of FIG. 8;
FIG. 13 is a cross-sectional view taken along line D-D of FIG. 9;
FIG. 14 shows a first step ladder installation process;
FIG. 15 is a second drawing showing the installation of the ladder;
FIG. 16 shows a third installation process of the ladder;
FIG. 17 is a fourth view showing the installation process of the ladder;
FIG. 18 is a fifth drawing showing the installation of the ladder;
FIG. 19 shows a sixth installation process of the ladder;
FIG. 20 is a schematic structural view of the second embodiment;
FIG. 21 is an enlarged view of portion F of FIG. 20;
fig. 22 is a schematic view of the mounting structure of the insulator string.
In the figure: 1-a first fixing unit, 11-an upper clamping plate, 12-a lower clamping plate, 121-a first stud, 122-a positioning boss, 1221-a positioning hole, 13-a first locking nut,
2-a second fixing unit, 211-a web plate, 212-a wing plate, 213-a guide plate, 214-a limiting block, 2141-a first pressing inclined plane, 215-a vertical plate, 2151-a first lug plate, 216-a reinforcing rib plate, 22-a pull rod, 221-a second stud, 222-a third lug plate, 23-a connecting block, 24-a tensioning bolt, 241-a positioning shaft, 242-a hand wheel, 25-a sliding block, 251-a first articulated shaft, 26-a pressing block, 261-a pressing groove, 2611-a second pressing inclined plane, 262-a third stud, 27-a second locking nut and 28-a third locking nut,
3-supporting frames, 31-cross beams, 32-longitudinal beams, 33-second lug plates, 34-supporting blocks, 341-wedging inclined planes,
4-a second articulated shaft, the second articulated shaft,
51-iron tower, 511-connection hanging plate, 521-first connecting plate, 522-second connecting plate, 523-insulator string, 53-bulb hanging ring, 54-connecting ring and 55-lead.
Detailed Description
For convenience of description, a coordinate system is defined as shown in fig. 1, and the left-right direction is taken as a transverse direction, the front-back direction is taken as a longitudinal direction, and the up-down direction is taken as a vertical direction.
To facilitate understanding of the present solution, a simple description of the mounting structure of the duplex insulator string 523 will be given. As shown in fig. 22, the duplex insulator string 523 includes a first link plate 521 located on the side of the iron tower 51 and a second link plate 522 located on the side of the lead 55, two strings of insulator strings 523 are disposed between the first link plate 521 and the second link plate 522, and two ends of the insulator string 523 are connected to the first link plate 521 and the second link plate 522. The iron tower 51 is provided with a horizontally arranged connecting hanging plate 511, and the connecting hanging plate 511 is provided with a ball head hanging ring 53. The first link plate 521 is provided with two ball suspension loops 53, the two ball suspension loops 53 are connected through a connecting chain, and the connecting chain is formed by connecting a plurality of connecting rings 54 end to end. As a specific embodiment, the connection chain in this embodiment includes only one connection ring 54, and the projection of the connection ring 54 in the horizontal plane is in a closed shape. The outer end of the second link 522 is connected to the wire 55.
Example one
As shown in fig. 1, 3, 8 and 9, the ladder for repairing the transmission line comprises a first fixing unit 1, a second fixing unit 2 and a support frame 3 in sequence from an iron tower 51 side to a lead 55 side.
As shown in fig. 2 and 11, the first fixing unit 1 includes an upper clamping plate 11 and a lower clamping plate 12 for clamping the connection hanging plate 511. The left end and the right end of the upper side surface of the lower clamping plate 12 are respectively provided with a first stud 121 extending upwards along the vertical direction, the upper clamping plate 11 is provided with a first through hole for accommodating the first stud 121, and a first locking nut 13 is arranged above the upper clamping plate 11 on the first stud 121. The connecting hanging plate 511 is clamped between the upper clamping plate 11 and the lower clamping plate 12 under the locking action of the first locking nut 13.
Preferably, the first locking nut 13 is a wing nut.
As shown in fig. 2 and 12, the second fixing unit 2 includes a mounting bracket longitudinally straddling the connection ring 54, the mounting bracket includes a web 211, the front and rear ends of the web 211 are respectively provided with a wing 212 extending downward in the vertical direction, and the web 211 and the wing 212 together form a U-shaped structure with an opening facing downward.
The wing plate 212 is provided with a pull rod 22, one end of the pull rod 22 is slidably hinged with the wing plate 212, the sliding direction of the pull rod 22 is parallel to the web plate 211, the other end of the pull rod 22 is fixedly provided with a connecting block 23, and the connecting block 23 is provided with a tensioning bolt 24 for tightly jacking the lower clamping plate 12. I.e. the end of the tensioning bolt 24 bears against the right side of the lower clamping plate 12.
As a specific embodiment, as shown in fig. 4 and 5, in this embodiment, the inner side surface and the outer side surface (the opposite side of the two wing plates 212 is the inner side) of the wing plate 212 are both provided with a guide plate 213 with a T-shaped cross section, and the guide plate 213 is parallel to the web 211. Preferably, the left and right side surfaces of the guide plate 213 are flush with the left and right side surfaces of the wing plate 212, respectively. The guide plate 213 is provided with a slider 25 that can slide in the longitudinal direction with respect to the guide plate 213, that is, a sliding groove having a T-shaped cross section that is engaged with the guide plate 213 is provided on the inner side surface (the side close to the wing plate 212 is the inner side) of the slider 25. A first hinge shaft 251 is arranged on the outer side surface of the sliding block 25, a first hinge hole matched with the first hinge shaft 251 is arranged at one end of the pull rod 22, and a second stud 221 coaxially arranged with the pull rod 22 is arranged at the other end of the pull rod 22.
The connecting block 23 is disposed between the two pull rods 22, and second through holes for accommodating the second studs 221 are respectively disposed at two ends of the connecting block 23. A second locking nut 27 is arranged on the second stud 221 on one side of the connecting block 23 away from the pull rod 22, and the connecting block 23 is pressed on a step surface between the pull rod 22 and the second stud 221 under the pressing action of the second locking nut 27.
A tension bolt 24 is arranged between the two pull rods 22 on the connecting block 23.
As shown in fig. 6 and 12, a stopper 214 is disposed on a lower side surface of the web 211 of the mounting bracket, and a symmetrical plane of the stopper 214 extending in the left-right direction coincides with a symmetrical plane of the mounting bracket extending in the left-right direction. When the device is installed, the limiting block 214 is inserted into the connecting ring 54 with a closed figure projected on the horizontal plane. In this way, on the one hand, it can be ensured that the mounting bracket is centered with respect to the duplex insulator string 523, that is, the symmetry plane of the mounting bracket extending in the left-right direction coincides with the symmetry plane of the duplex insulator string 523 extending in the left-right direction. On the other hand, when the tightening bolt 24 is tightened, the mounting bracket is pressed against the connecting chain by the pull rod 22, and the force applied by the pull rod 22 to the mounting bracket is horizontally directed to the right. As shown in fig. 8, since the overhead wire 55 has a certain degree of draping, the insulator chain 523 and the connecting chain for connecting the insulator chain 523 each have a certain degree of draping, that is, the connecting chain is in an arc shape extending in the left-down direction. Thus, the mounting rack mounted on the connecting chain is also in an inclined state with a lower left and a higher right, at this time, the horizontal pulling force applied by the pull rod 22 to the mounting rack can be decomposed into two forces, one is a downward force F1 perpendicular to the web 211 of the mounting rack, and the mounting rack is pressed on the connecting chain under the action of the force F1; the other is a force F2 parallel to the web 211 of the mounting bracket to the right, and the mounting bracket has a movement tendency of moving obliquely to the upper right under the action of the force F2. By arranging the limiting block 214, the component force F2 can be offset, so that the mounting frame is stably fixed on the connecting chain.
Further, in order to adapt to the connecting rings 54 with different sizes, as shown in fig. 6 and 12, the front and rear sides of the limiting block 214 are respectively provided with a first pressing inclined surface 2141 with a low inside and a high outside (with the side close to the inside of the limiting block 214 as the inside). The first pressing inclined surface 2141 is pressed against the linear portions of the connection ring 54 at the front and rear sides thereof by the tension of the rod 22.
Further, in order to ensure the fixing reliability of the mounting bracket, as shown in fig. 6 and 9, a pressing block 26 is disposed inside the mounting bracket and is matched with the limiting block 214, a pressing groove 261 penetrating through the pressing block 26 along the left-right direction is disposed on the upper side surface of the pressing block 26, and second pressing inclined surfaces 2611 with a low inner height and a high outer height (one side close to the inside of the limiting block 214 is the inner side) are disposed on the front side and the rear side of the pressing groove 261 respectively. The upper side of the compressing block 26 is provided with third studs 262 on the front side and the rear side of the compressing groove 261 respectively, third through holes for accommodating the third studs 262 are formed in the web 211 of the mounting rack, and the upper ends of the third studs 262 penetrate through the third through holes and extend to the upper side of the web 211 of the mounting rack. A third lock nut 28 is disposed on the third stud 262 above the web 211 of the mount. The second pressing inclined surface 2611 of the pressing block 26 is pressed against the linear portions of the connection ring 54 at the front and rear sides thereof by the locking action of the third lock nut 28. That is, the straight portion of the connection ring 54 is restricted between the first pressing slope 2141 and the second pressing slope 2611 located below the first pressing slope 2141.
As shown in fig. 1 and 2, an upright plate 215 extending upward perpendicular to the web 211 is disposed on an upper side of the web 211 of the mounting bracket, and a reinforcing rib plate 216 is disposed between the upright plate 215 and the web 211. The right end of the supporting frame 3 is hinged to the vertical plate 215 through a second hinge shaft 4. As shown in fig. 3, 7 and 13, a supporting block 34 is disposed at the left end of the lower side of the supporting frame 3, and a wedge inclined plane 341 with a higher left and a lower right is disposed on the left side of the supporting block 34, and the wedge inclined plane 341 is pressed against the inner edge of the second link plate 522.
As a specific embodiment, as shown in fig. 1 and 2, the supporting frame 3 includes two cross beams 31 extending in the left-right direction, a plurality of longitudinal beams 32 extending in the front-rear direction are uniformly disposed between the two cross beams 31 in the left-right direction, and the supporting block 34 is fixedly disposed on the lower side surface of one of the longitudinal beams 32. The front end and the rear end of the longitudinal beam 32 are respectively fixedly connected with the cross beam 31 in a welding mode. Two first lug plates 2151 are arranged on the left side face of the vertical plate 215, a second hinge shaft 4 is arranged between the two first lug plates 2151, and a second hinge hole matched with the hinge shaft is formed in each first lug plate 2151. A second ear plate 33 is arranged on the right end face of the cross beam 31, and a third hinge hole matched with the second hinge shaft 4 is formed in the second ear plate 33.
Further, in order to adjust the position of the supporting block 34 for adapting to the duplex insulator strings 523 with different lengths, the supporting block 34 is fixedly connected to the supporting frame 3 through a fixing bolt (not shown in the figure). As a specific implementation manner, in the present embodiment, each of the longitudinal beams 32 is provided with at least two fourth through holes for receiving the fixing bolts, and the upper side surface of the supporting block 34 is provided with threaded holes for matching with the bolts. The end of the fixing bolt passes through the fourth through hole and then is in threaded connection with the supporting block 34.
Further, in order to facilitate installation and ensure reliability of connection and fixation of the installation frame, as shown in fig. 10, the lower clamp plate 12 is provided with a positioning hole 1221 penetrating through the lower clamp plate 12 in the left-right direction, a positioning shaft 241 matched with the positioning hole 1221 is coaxially arranged on an end surface of a threaded section of the tightening bolt 24, the diameter of the positioning shaft 241 is the same as that of the positioning hole 1221, the positioning shaft 241 is inserted into the positioning hole 1221, and the right side surface of the lower clamp plate 12 is pressed against a step surface between the positioning shaft 241 and the threaded section of the tightening bolt 24.
Further, as shown in fig. 10, a hand wheel 242 is fixedly provided at the right end of the tension bolt 24.
Further, as shown in fig. 5, a positioning boss 122 is disposed on the lower side surface of the lower clamp plate 12, and the positioning hole 1221 is disposed on the positioning boss 122 and penetrates through the positioning boss 122 along the left-right direction.
The installation process is as follows:
firstly, as shown in fig. 14, the first fixing unit 1 is firstly installed on the connecting hanging plate 511, and at this time, the first locking nut 13 is only installed on the first stud 121 and is completely locked, that is, the positions of the upper clamping plate 11 and the lower clamping plate 12 can be adjusted as required.
Second, as shown in fig. 15, the mounting bracket is placed on the link chain and the stopper 214 is inserted into the link ring 54 having a closed figure in a projection in a horizontal plane.
Thirdly, as shown in fig. 16, the pull rod 22 is rotated to the right to make the pull rod 22 in a substantially horizontal state, and at the same time, the position of the first fixing unit 1 is adjusted until the positioning shaft 241 is aligned with the positioning hole 1221.
Fourthly, as shown in fig. 17, the hand wheel 242 of the tightening bolt 24 is rotated to move the tightening bolt 24 leftward until the positioning shaft 241 is inserted into the positioning hole 1221 and pressed against the right side surface of the lower clamping plate 12.
Fifth, as shown in fig. 18, a hold-down block 26 is installed;
sixthly, as shown in fig. 19, the supporting frame 3 is installed, the right end of the supporting frame 3 is hinged to the vertical plate 215 of the mounting frame, then a rope is tied to the free end of the supporting frame 3, and the supporting frame 3 is rotated to the left by pulling the rope until the wedging inclined surface 341 of the supporting block 34 is pressed against the inner edge of the second coupling plate 522, that is, the state shown in fig. 1.
Example two
As shown in fig. 20 and 21, guide plates 213 having a T-shaped cross section are provided on the outer side surfaces of the wing plates 212 (the opposite side of the wing plates 212 is the inner side), and the guide plates 213 are parallel to the web 211. Preferably, the left and right side surfaces of the guide plate 213 are flush with the left and right side surfaces of the wing plate 212, respectively. The guide plate 213 is provided with a slider 25 that can slide in the longitudinal direction with respect to the guide plate 213, that is, a sliding groove having a T-shaped cross section that is engaged with the guide plate 213 is provided on the inner side surface (the side close to the wing plate 212 is the inner side) of the slider 25. A first hinge shaft 251 is provided on an outer side surface of the slider 25.
The cross section of the pull rod 22 is square, one end of the pull rod 22 is provided with a third ear plate 222 which is perpendicular to the pull rod 22 and extends upwards, and the third ear plate 222 is provided with a first hinge hole which is matched with the first hinge shaft 251. The other end of the pull rod 22 is fixedly provided with a connecting block 23 which is perpendicular to the pull rod 22 and extends upwards, and the connecting block 23 is provided with a tensioning bolt 24 for tightly propping against the lower clamping plate 12.
The rest of the structure is the same as the first embodiment.
Claims (9)
1. The utility model provides a transmission line overhauls uses cat ladder which characterized in that: the device comprises a first fixing unit, a second fixing unit and a support frame in sequence from right to left;
the first fixing unit comprises an upper clamping plate and a lower clamping plate which are used for clamping and connecting the hanging plate;
the second fixing unit comprises a mounting frame, the mounting frame comprises a web plate, wing plates are respectively arranged at the front end and the rear end of the web plate, a pull rod is arranged on each wing plate, one end of each pull rod is slidably hinged with each wing plate, a connecting block is fixedly arranged at the other end of each pull rod, and a tensioning bolt for jacking the lower clamping plate is arranged on each connecting block; a positioning hole is formed in the right side face of the lower clamping plate, and a positioning shaft matched with the positioning hole is coaxially arranged on the end face of the tensioning bolt;
a limiting block is arranged on the lower side surface of the web plate, a vertical plate is arranged on the upper side surface of the web plate, the right end of the supporting frame is hinged with the vertical plate, a supporting block is arranged at the left end of the supporting frame, and a wedging inclined plane is arranged on the left side surface of the supporting block;
the support frame includes two crossbeams that extend along the left and right sides direction, two the crossbeam between evenly be provided with a plurality of longerons that extend along the fore-and-aft direction along the left and right sides direction.
2. The ladder stand for overhauling the power transmission line according to claim 1, which is characterized in that: the inner side and the outer side of the wing plate are both provided with pull rods, the connecting block is positioned between the two pull rods, the two ends of the connecting block are respectively fixedly connected with the pull rods, and the connecting block is provided with a tensioning bolt between the two pull rods.
3. The ladder stand for overhauling the power transmission line as claimed in claim 2, characterized in that: the inner side face and the outer side face of the wing plate are both provided with guide plates, the guide plates are provided with sliding blocks in a sliding mode, and the pull rods are hinged to the sliding blocks.
4. The ladder stand for overhauling the power transmission line according to claim 3, characterized in that: the guide plate is parallel to the web plate.
5. The ladder stand for overhauling the power transmission line according to claim 1, which is characterized in that: the front side and the rear side of the limiting block are symmetrically provided with first compression inclined planes which are low in inside and high outside.
6. The ladder stand for overhauling the power transmission line according to claim 5, characterized in that: the mounting frame in be provided with the compact heap, be provided with on the last side of compact heap and compress tightly the groove, the compact heap on be located compress tightly the both sides in groove and be provided with the third double-screw bolt respectively, the third double-screw bolt pass the web extend to the top of web, the third double-screw bolt on be provided with third lock nut, the preceding, the back both sides in groove that compress tightly are provided with inside low outside high second respectively and compress tightly the inclined plane.
7. The ladder stand for overhauling the power transmission line according to claim 1, which is characterized in that: the supporting block is fixedly connected with the supporting frame through a fixing bolt.
8. The ladder stand for overhauling the power transmission line according to claim 1, which is characterized in that: the lower side surface of the lower clamping plate is provided with a positioning boss, and the positioning hole is formed in the positioning boss.
9. The ladder stand for overhauling the power transmission line according to claim 1, which is characterized in that: and a hand wheel is fixedly arranged on the tension bolt.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110598784.2A CN113266266B (en) | 2021-05-31 | 2021-05-31 | Transmission line overhauls uses cat ladder |
| PCT/CN2021/141379 WO2022252589A1 (en) | 2021-05-31 | 2021-12-24 | Climbing ladder for power transmission line maintenance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110598784.2A CN113266266B (en) | 2021-05-31 | 2021-05-31 | Transmission line overhauls uses cat ladder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113266266A CN113266266A (en) | 2021-08-17 |
| CN113266266B true CN113266266B (en) | 2023-01-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110598784.2A Active CN113266266B (en) | 2021-05-31 | 2021-05-31 | Transmission line overhauls uses cat ladder |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113266266B (en) |
| WO (1) | WO2022252589A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113266266B (en) * | 2021-05-31 | 2023-01-31 | 青海送变电工程有限公司 | Transmission line overhauls uses cat ladder |
| CN117214779B (en) * | 2023-11-07 | 2024-01-30 | 国网辽宁省电力有限公司 | Transformer fault monitoring device |
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| Publication number | Publication date |
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| CN113266266A (en) | 2021-08-17 |
| WO2022252589A1 (en) | 2022-12-08 |
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