CN211173893U - Electric power overhauls cat ladder - Google Patents
Electric power overhauls cat ladder Download PDFInfo
- Publication number
- CN211173893U CN211173893U CN201921225691.XU CN201921225691U CN211173893U CN 211173893 U CN211173893 U CN 211173893U CN 201921225691 U CN201921225691 U CN 201921225691U CN 211173893 U CN211173893 U CN 211173893U
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- China
- Prior art keywords
- ladder
- electric power
- lifting hook
- pulley
- insulating ladder
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- 241000282326 Felis catus Species 0.000 title claims abstract description 5
- 230000009194 climbing Effects 0.000 claims description 9
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 239000000463 material Substances 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 18
- 229910052742 iron Inorganic materials 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 7
- 230000009193 crawling Effects 0.000 description 4
- 230000005684 electric field Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 229910000746 Structural steel Inorganic materials 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
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Abstract
Electric power overhauls cat ladder, including the lifting hook, set up insulating ladder at the lifting hook lower extreme, hand capstan winch and assembly pulley of arranging about insulating ladder lower part sets up, and around having the stay cord on the hand capstan winch, the stay cord lower extreme sets up the couple, the assembly pulley comprises pulley yoke and two pulleys of installing on the pulley frame from top to bottom, the stay cord lower extreme passes between two pulleys. The structure is short and light, and the pulling and hooking are time-saving and labor-saving; the swing amplitude is reduced, the stability of operating personnel in the maintenance process is improved, and the falling phenomenon is avoided; the hooking distance is prolonged, the magnitude of induced current of an operator in the hooking process is reduced, and the electric shock danger is avoided; the labor amount can be reduced, and the operation is simple.
Description
Technical Field
The invention relates to an electric power overhaul crawling ladder.
Background
In the maintenance operation of a 220kV power transmission line, entering a strong electric field is an important link for normally carrying out live-line operation. Because the height of the iron tower is 30-40 m, the traditional mode of entering the strong electric field is that firstly ground potential personnel carry a transmission rope to climb the iron tower to a cross arm, a rope ladder connected to the lower end of the transmission rope is upwards pulled and hooked on a conducting wire, and then equipotential personnel climb the rope ladder from the ground to the conducting wire to carry out maintenance operation. The rope ladder connected between the lead and the ground is long, heavy, and time and labor are wasted when the rope ladder is pulled and hooked; the flexible ladder has large swing amplitude, so that equipotential personnel standing on the flexible ladder are difficult to master balance and are easy to fall; when the ground potential personnel hook the rope ladder, the distance between the ground potential personnel and the conducting wire is close, the iron tower is grounded, and the body of the ground potential personnel has larger induced current to pass through, so that the danger of electric shock exists; more than two operators are needed, the labor is large, and the operation is complex.
Disclosure of Invention
The invention aims to solve the technical problems and provides an electric power overhaul crawling ladder which is short and light in structure, time-saving and labor-saving in pulling and hooking; the swing amplitude is reduced, the stability of operating personnel in the maintenance process is improved, and the falling phenomenon is avoided; the hooking distance is prolonged, the magnitude of induced current of an operator in the hooking process is reduced, and the electric shock danger is avoided; the labor amount can be reduced, and the operation is simple;
the technical solution of the invention is as follows:
electric power overhauls cat ladder, including the lifting hook, its special character lies in: the lower end of the lifting hook is provided with an insulating ladder, the lower part of the insulating ladder is provided with a hand winch and a pulley block which are arranged up and down, the hand winch is wound with a pull rope, the lower end of the pull rope is provided with a hook, the pulley block is composed of a pulley frame and two pulleys which are arranged on the pulley frame up and down, and the lower end of the pull rope passes through the two pulleys.
Preferably, the insulating ladder is composed of a supporting rod vertically installed at the lower end of the lifting hook and climbing rods installed on two sides of the supporting rod and arranged at equal intervals from top to bottom, and the climbing rods on the left side and the right side are arranged in a staggered mode; simple structure, light weight and convenient carrying.
Further preferably, the support rod and the climbing rod are made of epoxy resin.
Preferably, the number of the lifting hooks is two, and the two lifting hooks are respectively arranged on the left side and the right side of the insulating ladder.
Further preferably, a connecting rod is arranged between the two lifting hooks, so that the structural stability of the lifting hook is improved.
The invention has the beneficial effects that:
1. the insulating ladder structure is short and light in weight, and the operation of pulling on the iron tower and hooking the wire is time-saving and labor-saving, so that the operation strength is reduced.
2. Because the insulating ladder has certain rigidity, the swing range is little after the insulating ladder hooks the wire, improves maintenance in-process operation personnel stability, avoids the phenomenon of falling to take place.
3. Because the hand winch and the pulley block which are arranged up and down are arranged at the lower part of the insulating ladder, the lower end of the pull rope wound on the hand winch penetrates through the pulley block and is provided with the hook, the electric power overhaul ladder is lifted to the position 6 meters below the cross arm of the iron tower by using the transmission rope, the lifting insulating ladder is lifted to hook the hook on the guide wire, the hook distance is prolonged, the magnitude of induced current of operating personnel in the hook process is reduced, and the electric shock hazard is avoided.
4. After the insulating ladder is hooked with the wire, the hook is hooked on the angle iron of the iron tower, an operator directly transfers to the insulating ladder and enters an electric field to overhaul, and one person can finish the whole overhaul process, so that the labor amount is reduced, and the operation is simple.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a left side view of the hanger of FIG. 1;
in the figure: 1-supporting rod, 2-climbing rod, 3-lifting hook, 4-connecting rod, 5-hand winch, 6-pulling rope, 7-hook, 8-pulley frame and 9-pulley.
Detailed Description
As shown in fig. 1 and 2, the electric power overhaul ladder comprises an insulation ladder, wherein the insulation ladder is composed of a support rod 1 made of epoxy resin and climbing rods 2 made of epoxy resin, the climbing rods 2 are arranged on two sides of the support rod 1 and are arranged at equal intervals from top to bottom, and the climbing rods 2 on the left side and the right side are arranged in a staggered mode; two bilateral symmetry's lifting hook 3 are installed to insulating ladder upper end, installation connecting rod 4 between two lifting hooks 3, and hand winch 5 and the assembly pulley of arranging about the installation of insulating ladder lower part are around having stay cord 6 on hand winch 5, 6 lower extreme installation couples 7 of stay cord, the assembly pulley comprises pulley yoke 8 and two pulleys 9 of installing on pulley yoke 8 from top to bottom, 6 lower extremes of stay cord pass between two pulleys.
During maintenance operation, the electric power overhaul crawling ladder is bound and fixed by using the transmission rope, an operator carries the other end of the transmission rope to climb the iron tower to a position 6 meters below the cross arm, then pulls the transmission rope to lift the electric power overhaul crawling ladder to the operator, lifts the insulating ladder to hook the lifting hook 3 on the wire, hooks the hook 7 on the angle iron of the iron tower, the operator transfers to the insulating ladder, rotates the hand winch 5 to release the wire, enables the insulating ladder to vertically swing right to keep a safe distance with the iron tower, and finally climbs the insulating ladder to enter a strong electric field to start maintenance operation.
After the maintenance operation is finished, the operation process is reversed, and the operator returns to the ground to finish the operation.
The above description is only exemplary of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. Electric power overhauls cat ladder, including the lifting hook, its characterized in that: the lower end of the lifting hook is provided with an insulating ladder, the lower part of the insulating ladder is provided with a hand winch and a pulley block which are arranged up and down, the hand winch is wound with a pull rope, the lower end of the pull rope is provided with a hook, the pulley block is composed of a pulley frame and two pulleys which are arranged on the pulley frame up and down, and the lower end of the pull rope passes through the two pulleys.
2. The electric power service ladder of claim 1, wherein: the insulating ladder is composed of a support rod vertically installed at the lower end of the lifting hook and climbing rods installed on two sides of the support rod and arranged at equal intervals from top to bottom, and the climbing rods on the left side and the right side are arranged in a staggered mode.
3. The electric power service ladder of claim 2, wherein: the supporting rod and the climbing rod are made of epoxy resin materials.
4. The electric power service ladder of claim 1, wherein: the lifting hook is two, and two lifting hooks are arranged in the left side and the right side of the insulating ladder respectively.
5. An electric power service ladder as claimed in claim 4, wherein: a connecting rod is arranged between the two lifting hooks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921225691.XU CN211173893U (en) | 2019-07-31 | 2019-07-31 | Electric power overhauls cat ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921225691.XU CN211173893U (en) | 2019-07-31 | 2019-07-31 | Electric power overhauls cat ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211173893U true CN211173893U (en) | 2020-08-04 |
Family
ID=71823819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921225691.XU Active CN211173893U (en) | 2019-07-31 | 2019-07-31 | Electric power overhauls cat ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211173893U (en) |
-
2019
- 2019-07-31 CN CN201921225691.XU patent/CN211173893U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |