CN114941498A - Safety protection device for live working platform - Google Patents
Safety protection device for live working platform Download PDFInfo
- Publication number
- CN114941498A CN114941498A CN202210750791.4A CN202210750791A CN114941498A CN 114941498 A CN114941498 A CN 114941498A CN 202210750791 A CN202210750791 A CN 202210750791A CN 114941498 A CN114941498 A CN 114941498A
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- CN
- China
- Prior art keywords
- aerial ladder
- protection
- electric push
- push rod
- hinged
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 210000000078 claw Anatomy 0.000 claims abstract description 24
- 238000009413 insulation Methods 0.000 claims description 17
- 230000007246 mechanism Effects 0.000 claims description 13
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000009471 action Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Images
Classifications
-
- 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
- E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
-
- 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
- E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
- E06C1/39—Ladders having platforms; Ladders changeable into platforms
-
- 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
- E06C7/12—Lifts or other hoisting devices on ladders
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/16—Platforms on, or for use on, ladders, e.g. liftable or lowerable platforms
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/18—Devices for preventing persons from falling
- E06C7/185—Devices providing a back support to a person on the ladder, e.g. cages
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ladders (AREA)
Abstract
The invention provides a safety protection device for a live working platform, which comprises an aerial ladder and a lifting assembly, wherein the aerial ladder is lifted in multiple stages, a support is hinged to the bottom of the aerial ladder, a main clamping assembly is hinged to the support, an auxiliary clamping assembly is hinged to each stage of the aerial ladder, an insulating bucket is rotatably arranged at the top of the aerial ladder, a protection frame is slidably connected to one side of the insulating bucket, a plurality of protection claws are rotatably connected to two sides of the protection frame, a handle for operating the protection claws is arranged above the protection frame, the lifting assembly is arranged on a telegraph pole, and the lifting assembly is matched with the aerial ladder to realize the rotation of the aerial ladder. When high altitude construction, the protection frame can play the effect that increases insulating fill, has the risk of falling when avoiding operating personnel to lean forward, improves operating personnel's operation scope, and the protection claw of protection frame both sides can play the guard action, avoids operating personnel to heel and falls, can slide the protection frame according to operating personnel's operation direction simultaneously.
Description
Technical Field
The invention relates to the technical field of transmission line fault detection equipment, in particular to a safety protection device for a live working platform.
Background
When the traditional distribution network is electrified for overhead operation, an operator is lifted to an overhead operation position mainly through two modes of an insulating bucket arm vehicle and an insulating scaffold building mode, an insulating bucket is arranged on the insulating bucket arm vehicle, the operator stands in the insulating bucket and works outwards, the condition that the operator works forwards can exist in the operation process, the hidden danger that the operator falls exists due to limited operation space and incomplete protective measures of the insulating bucket arm vehicle and the insulating scaffold building mode, for example, a transformation structure and a method of the insulating bucket arm vehicle with the patent number of CN202010113119.5 disclose an insulating arm, and a first insulating bucket is arranged at the end part of the insulating arm vehicle; the second insulating bucket is arranged on one side of the insulating arm, is close to the first insulating bucket and is used for installing the robot; and the rotating mechanism is arranged between the second insulating hopper and the insulating arm and drives the second insulating hopper to rotate relative to the insulating arm. The invention provides a transformation structure of an insulating bucket arm vehicle, which has higher personal safety of operators when the uninterrupted power operation of a distribution network line is carried out, and has larger potential safety hazard due to lack of protective measures for the operators.
Disclosure of Invention
Therefore, the invention aims to provide a safety protection device for a hot-line work platform aiming at overcoming the defects in the prior art, and aims to solve the problems.
The technical scheme of the invention is realized as follows:
the utility model provides a safety device for live working platform, includes multistage lift's aerial ladder and lifting unit, the bottom of aerial ladder articulates there is the support, the support articulates there is main clamping component, every grade articulated on the aerial ladder have vice clamping component, the top of aerial ladder is rotated and is provided with insulating fill, one side sliding connection who insulates to fight has the protection frame, a plurality of protection claws are connected in the both sides rotation of protection frame, the top of protection frame is equipped with and is used for the operation the handle of protection claw, lifting unit installs on the wire pole, just lifting unit with the aerial ladder cooperation is in order to realize the aerial ladder rotates.
Preferably, the two sides of the protection frame are rotatably connected with rotating shafts, the protection claws are connected with the rotating shafts, and the handles are connected with the rotating shafts.
Preferably, the lifting assembly comprises an electric winch, an insulation pulley and an insulation rope, the electric winch and the insulation pulley are fixed on the telegraph pole, the insulation pulley is fixed above the electric winch, one end of the insulation rope is fixed on the insulation winch, and the free end of the insulation rope bypasses the insulation pulley and is connected with the aerial ladder.
Preferably, the protection frame comprises a frame, an arc-shaped support plate and a sliding support leg, the arc-shaped support plate is fixed above the frame, the sliding support leg is fixed below the frame, and the frame is connected to the insulating bucket in a sliding manner through the support.
Preferably, a lifting electric push rod is arranged on a top ladder frame of the aerial ladder, the output end of the lifting electric push rod is fixedly connected with a pedestal, a support column is vertically and fixedly arranged on the pedestal, a sleeve is rotatably arranged on the support column, the upper end of the insulating bucket is hinged to the upper end of the sleeve, a rotating mechanism is fixed at the lower end of the sleeve, a correcting electric push rod is hinged to the rotating mechanism, and the output end of the correcting electric push rod is hinged to two sides of the insulating bucket; and a rotating gear is fixedly arranged on the pedestal, and the rotating gear is in meshing transmission with the rotating gear.
Preferably, the rotating mechanism comprises a beam and a motor, the beam is fixedly arranged on the sleeve, the motor is arranged on the beam, and the output end of the motor is in meshing transmission with the rotating gear through a gear, so that the insulating bucket can be rotatably arranged on the pedestal.
Preferably, the main clamping assembly and the auxiliary clamping assembly comprise U-shaped beams, primary electric push rods and mechanical claws, the U-shaped beams are hinged to the aerial ladder, the primary electric push rods are fixedly connected to the U-shaped beams, and the mechanical claws are arranged at the output ends of the primary electric push rods.
Preferably, the auxiliary clamping device further comprises a second-stage electric push rod, one end of the second-stage electric push rod is hinged to the aerial ladder, and the other end of the second-stage electric push rod is hinged to the U-shaped beam.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a safety protection device for a live working platform, which comprises (1) a protection frame, a lifting device and a lifting device, wherein the protection frame can play a role of increasing an insulating bucket during high-altitude operation, so that the risk of falling of an operator when leaning forward is avoided, the operation range of the operator is improved, and protection claws at two sides of the protection frame can play a role of protection, so that the operator is prevented from falling in a side-tipping manner, and the protection frame can slide according to the operation direction of the operator; (2) the lifting assembly can lift the aerial ladder, so that the aerial ladder is vertical to the ground and parallel to the telegraph pole; (3) can be in narrow regional operation problem, and easy operation is convenient, and the accessible rotates the orientation of insulating fill simultaneously, enlarges the operation scope.
Drawings
FIG. 1 is a schematic structural diagram of a safety protection device for a hot-line work platform according to the present invention;
FIG. 2 is an enlarged schematic view of a portion A of FIG. 1;
FIG. 3 is a schematic view of a partial cross-sectional structure of the protection frame of the present invention;
FIG. 4 is an enlarged schematic view of a portion B of FIG. 1;
FIG. 5 is an enlarged schematic view of a portion C of FIG. 1;
FIG. 6 is an enlarged view of a portion D of FIG. 1;
in the figure, 1 aerial ladder, 2 lifting components, 3 electric winches, 4 insulating pulleys, 5 insulating ropes, 6 supports, 7 main clamping components, 8 auxiliary clamping components, 9U-shaped beams, 10 first-stage electric push rods, 11 mechanical claws, 12 second-stage electric push rods, 13 insulating buckets, 14 protective frames, 15 frames, 16 arc-shaped supporting plates, 17 sliding supporting legs, 18 protective claws, 19 handles, 20 rotating shafts, 21 lifting electric push rods, 22 pedestals, 23 supports, 24 sleeves, 25 rotating mechanisms, 26 cross beams, 27 motors, 28 gears, 29 correcting electric push rods and 30 rotating gears.
Detailed Description
In order to better understand the technical content of the invention, specific embodiments are provided below, and the invention is further described with reference to the accompanying drawings.
Example 1
Referring to fig. 1 to 3, the safety protection device for a hot-line work platform provided by the invention comprises an aerial ladder 1 and a lifting assembly 2, wherein the aerial ladder 1 is lifted in multiple stages, a support 6 is hinged to the bottom of the aerial ladder 1, a main clamping assembly 7 is hinged to the support 6, the bottom of a telegraph pole 31 can be clamped, an auxiliary clamping assembly 8 is hinged to each stage of the aerial ladder 1, the upper end of the telegraph pole 31 is clamped, the aerial ladder 1 is stabilized by being matched with the main clamping assembly 7, an insulating bucket 13 is rotatably arranged at the top of the aerial ladder 1, the operation of an operator is facilitated, a protection frame 14 is slidably connected to one side of the insulating bucket 13, the protection frame 14 plays a protection role, the protection height is increased, a plurality of protection claws 18 are rotatably connected to two sides of the protection frame 14, a handle 19 for operating the protection claws 18 is arranged above the protection frame 14, the protection claws 18 can be rotated by the handle 19 to wrap the operator from the back, avoid falling, lifting unit 2 installs on wire pole 31, just lifting unit 2 with the cooperation of aerial ladder 1 is in order to realize aerial ladder 1 rotates, wherein lifting unit 2 includes electric capstan 3, insulating coaster 4 and insulating rope 5, electric capstan 3 with insulating coaster 4 is fixed in on the wire pole 31, just insulating coaster 4 is fixed in electric capstan 3's top, the one end of insulating rope 5 is fixed in on the insulating capstan, the free end of insulating rope 5 is walked around insulating coaster 4 with aerial ladder 1 is connected, can realize aerial ladder 1 and rotate.
Specifically, protection frame 14 includes frame 15, arc backup pad 16 and slip stabilizer blade 17, arc backup pad 16 is fixed in the top of frame 15, slip stabilizer blade 17 is fixed in the below of frame 15, frame 15 passes through support sliding connection in on the insulating fill 13, the both sides of protection frame 14 are all rotated and are connected with pivot 20, and are a plurality of protection claw 18 with pivot 20 is connected, handle 19 with pivot 20 is connected, and arc backup pad 16 can play the effect of supporting operation personnel prothorax and arm.
When in use, the main clamping assembly 7 clamps the bottom end of the telegraph pole 31, the support 6 is fixed on the telegraph pole 31, the electric capstan 3 and the insulating pulley 4 are fixed on the telegraph pole 31, the free end of the insulating rope 5 is connected with the aerial ladder 1, the electric capstan 3 is started, the electric capstan 3 contracts the insulating rope 5, the support 6 is hinged at the bottom of the aerial ladder 1, the aerial ladder 1 upwards rotates along the hinged position of the support 6 until the aerial ladder 1 rotates to be vertical to the support 6, namely, the aerial ladder 1 is parallel to the telegraph pole 31, then the upper part of the telegraph pole 31 is clamped by the auxiliary clamping assembly 8, the telegraph pole 31 is clamped by the main clamping assembly 7 and the auxiliary clamping assembly 8 together, the aerial ladder 1 is vertically fixed on the support 6, when high-altitude operation is needed, an operator can rotate the protection claws 18 in the insulating bucket 13 by the handles 19, so that the protection claws 18 at two sides of the protection frame 14 are opened, the operating personnel stands between protection claw 18 and protection frame 14 to rotate protection claw 18 through handle 19 once more and surround operating personnel from operating personnel's back, play the guard action, the operating personnel operation that leans forward of being convenient for, and can effectively avoid operating personnel to fall, and protection frame 14 can remove along with operating personnel's removal, and can enlarge the working range through the lift of control aerial ladder 1 and the rotation of insulating fill 13 as required.
Example 2
Referring to fig. 1 to 6, the present embodiment differs from embodiment 1 in that: a lifting electric push rod 21 is arranged on a top ladder frame of the aerial ladder 1, the output end of the lifting electric push rod 21 is fixedly connected with a pedestal 22, a support column 23 is vertically and fixedly arranged on the pedestal 22, a sleeve 24 is rotatably arranged on the support column 23, the upper end of the insulating bucket 13 is hinged to the upper end of the sleeve 24, a rotating mechanism 25 is fixed at the lower end of the sleeve 24, a correcting electric push rod 29 is hinged to the rotating mechanism 25, and the output end of the correcting electric push rod 29 is hinged to two sides of the insulating bucket 13; a rotating gear 30 is fixedly arranged on the pedestal 22, the rotating mechanism 25 is in meshing transmission with the rotating gear 30, the rotating mechanism 25 comprises a beam 26 and a motor 27, the beam 26 is fixedly arranged on the sleeve 24, the motor 27 is arranged on the beam 26, the output end of the motor 27 is in meshing transmission with the rotating gear 30 through a gear 28, so that the insulating bucket 13 can be rotatably arranged on the pedestal 22, the lifting of the insulating bucket 13 is realized by arranging a lifting electric push rod 21 on the ladder frame at the top of the aerial ladder 1, and the insulating bucket 13 is rotated on the ladder frame at the top of the aerial ladder 1 by the rotating mechanism 25 to adjust the horizontal angle; meanwhile, when the aerial ladder 1 is inclined by hinging the insulating bucket 13 to the upper end of the sleeve 24 and arranging the correcting electric push rods 29 on the two sides of the cross beam 26, the insulating bucket 13 is always in a horizontal state, so that after workers enter the insulating bucket 13, the problem that the workers incline and fall during the lifting process of the insulating bucket 13 is solved; the motor 27 used in the present invention is a driving motor 27 having a self-locking function.
Example 3
Referring to fig. 1 to 6, the present embodiment is different from embodiment 1 in that: the main clamping assembly 7 and the auxiliary clamping assembly 8 both comprise a U-shaped beam 9, a primary electric push rod 10 and a gripper 11, the U-shaped beam 9 is hinged to the aerial ladder 1, the primary electric push rod 10 is fixedly connected to the U-shaped beam 9, the gripper 11 is arranged at the output end of the primary electric push rod 10, the auxiliary clamping device further comprises a secondary electric push rod 12, one end of the secondary electric push rod 12 is hinged to the aerial ladder 1, the other end of the secondary electric push rod 12 is hinged to the U-shaped beam 9, the gripper 11 can extend to one side of a telegraph pole 31 through the primary electric push rod 10, the telegraph pole 31 can be conveniently clamped, the angle of the U-shaped beam 9 can be adjusted through the secondary electric push rod 12, and the telegraph pole 31 can be conveniently clamped.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.
Claims (8)
1. The utility model provides a safety device for live working platform which characterized in that: aerial ladder and lifting unit including multistage lift, the bottom of aerial ladder articulates there is the support, the support articulates there is main clamping component, every grade articulated on the aerial ladder have vice clamping component, the top of aerial ladder is rotated and is provided with insulating fill, one side sliding connection who is insulating to fight has the protection frame, a plurality of protection claws are connected in the both sides rotation of protection frame, the top of protection frame is equipped with and is used for the operation the handle of protection claw, lifting unit installs on the wire pole, just lifting unit with the aerial ladder cooperation is in order to realize the aerial ladder rotates.
2. A safety shield for a hot-line work platform according to claim 1, wherein: the two sides of the protection frame are rotatably connected with rotating shafts, the protection claws are connected with the rotating shafts, and the handles are connected with the rotating shafts.
3. A safety shield for a hot-line work platform according to claim 1, wherein: the lifting assembly comprises an electric winch, an insulation pulley and an insulation rope, the electric winch and the insulation pulley are fixed on the telegraph pole, the insulation pulley is fixed above the electric winch, one end of the insulation rope is fixed on the insulation winch, and the free end of the insulation rope bypasses the insulation pulley and is connected with the aerial ladder.
4. A safety shield for a hot-line work platform according to claim 1, wherein: the protection frame comprises a frame, an arc-shaped supporting plate and sliding supporting legs, the arc-shaped supporting plate is fixed above the frame, the sliding supporting legs are fixed below the frame, and the frame is connected to the insulating bucket in a sliding mode through the support.
5. A safety shield for a hot-line work platform according to claim 1, wherein: a lifting electric push rod is arranged on a top ladder frame of the aerial ladder, the output end of the lifting electric push rod is fixedly connected with a pedestal, a support column is vertically and fixedly arranged on the pedestal, a sleeve is rotatably arranged on the support column, the upper end of the insulating bucket is hinged to the upper end of the sleeve, the lower end of the sleeve is fixedly provided with a rotating mechanism, a correcting electric push rod is hinged to the rotating mechanism, and the output end of the correcting electric push rod is hinged to the two sides of the insulating bucket; and a rotating gear is fixedly arranged on the pedestal, and the rotating gear is in meshing transmission with the rotating gear.
6. A safety shield for a hot-line work platform according to claim 5, wherein: the rotary mechanism comprises a cross beam and a motor, the cross beam is fixedly arranged on the sleeve, the motor is arranged on the cross beam, and the output end of the motor is in meshing transmission with the rotary gear through a gear, so that the insulation bucket can be rotatably arranged on the pedestal.
7. A safety shield for a hot-line work platform according to claim 1, wherein: the main clamping assembly and the auxiliary clamping assembly respectively comprise a U-shaped beam, a one-level electric push rod and a mechanical claw, the U-shaped beam is hinged to the aerial ladder, the one-level electric push rod is fixedly connected to the U-shaped beam, and the mechanical claw is arranged at the output end of the one-level electric push rod.
8. A safety shield for a hot-line work platform according to claim 5, wherein: the auxiliary clamping device further comprises a second-stage electric push rod, one end of the second-stage electric push rod is hinged to the aerial ladder, and the other end of the second-stage electric push rod is hinged to the U-shaped beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210750791.4A CN114941498A (en) | 2022-06-29 | 2022-06-29 | Safety protection device for live working platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210750791.4A CN114941498A (en) | 2022-06-29 | 2022-06-29 | Safety protection device for live working platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114941498A true CN114941498A (en) | 2022-08-26 |
Family
ID=82910267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210750791.4A Pending CN114941498A (en) | 2022-06-29 | 2022-06-29 | Safety protection device for live working platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114941498A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0931905A2 (en) * | 1998-01-26 | 1999-07-28 | Metal Kofler KG | Accessory for ladders |
| CN207160966U (en) * | 2017-08-17 | 2018-03-30 | 扬州诚创石油机械有限公司 | A kind of electric power safety job platform |
| CN207200127U (en) * | 2017-09-29 | 2018-04-06 | 河南送变电建设有限公司 | A kind of insulation climbing device for the maintenance of compound cross-arm |
-
2022
- 2022-06-29 CN CN202210750791.4A patent/CN114941498A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0931905A2 (en) * | 1998-01-26 | 1999-07-28 | Metal Kofler KG | Accessory for ladders |
| CN207160966U (en) * | 2017-08-17 | 2018-03-30 | 扬州诚创石油机械有限公司 | A kind of electric power safety job platform |
| CN207200127U (en) * | 2017-09-29 | 2018-04-06 | 河南送变电建设有限公司 | A kind of insulation climbing device for the maintenance of compound cross-arm |
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Application publication date: 20220826 |