CN112295180A - Climbers antiskid - Google Patents
Climbers antiskid Download PDFInfo
- Publication number
- CN112295180A CN112295180A CN202011018244.4A CN202011018244A CN112295180A CN 112295180 A CN112295180 A CN 112295180A CN 202011018244 A CN202011018244 A CN 202011018244A CN 112295180 A CN112295180 A CN 112295180A
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- plate
- pedal
- guide
- plates
- pair
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B27/00—Apparatus for climbing poles, trees, or the like
- A63B27/02—Climbing devices for round poles or trees attachable to the feet
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
The invention discloses a foot fastener anti-slip device, and aims to provide a foot fastener anti-slip device which can effectively solve the problem that under severe weather conditions such as rain, snow, ice and the like, when a front sole of an operator steps on a pedal, the operator is easy to slip backwards and fall off, so that the safety of the operator is affected. The pair of supporting side plates are symmetrically fixed on the left side and the right side of the pedal plate, extend towards the rear side of the pedal plate and form a rear supporting plate behind the pedal plate; the clamping assemblies are arranged on the rear supporting plate in a one-to-one correspondence mode and comprise vertical clamping rods, mounting side plates, reset springs, first guide rods and second guide rods; the second guide rods of the pair of clamping assemblies are connected through the connecting rope; the drive plate, the drive plate is located the below of running-board, and the drive plate supports to be equipped with down the depression bar that extends on the lower surface, is equipped with on the depression bar to connect the rope via hole, connects the rope and passes and connect the rope via hole.
Description
Technical Field
The invention relates to a climber for a creepage pole, in particular to a climber anti-slip device.
Background
The climber is an arc iron tool which is sleeved on the shoe and used for the creepage pole. The other side of the pole is tightly buckled on the telegraph pole by the lever action and the self weight of the human body, so that a large friction force is generated, the person can easily climb, and the foot buckle is automatically loosened because the bearing force on the foot is reduced when the foot is lifted. The current foot fastener generally comprises a J-shaped front end clamping head, a rear end clamping head, a pedal plate and a buckling belt arranged on the pedal plate. In actual use, the front sole of an operator steps on the pedal plate, and the front sole is fixed on the pedal plate through the buckle belt.
The prior foot fastener has good use safety when being constructed under general weather conditions; however, when the operator is working under severe weather conditions such as rain, snow, ice and the like, the front sole of the operator is easy to slip and fall off backwards when stepping on the pedal, especially when the operator is working on the rod for a long time, the surface of the pedal is easy to freeze, once the surface of the pedal is frozen, the front sole of the operator is easy to slip and fall off backwards when stepping on the pedal, so that the safety of the operator is seriously affected, and potential safety hazards exist.
Disclosure of Invention
The invention aims to provide a climber anti-skidding device which can effectively solve the problem that under severe weather conditions such as rain, snow, ice and the like, when a front sole of an operator steps on a pedal, the operator is easy to skid and fall backwards, so that the safety of the operator is affected.
The technical scheme of the invention is as follows:
a pair of support side plates are symmetrically fixed at the left side and the right side of a pedal plate, extend towards the rear side of the pedal plate and form a rear support plate behind the pedal plate;
the clamping assemblies are arranged on the rear supporting plates in a one-to-one correspondence mode and comprise vertical clamping rods, mounting side plates, reset springs, first guide holes and second guide holes which are formed in the rear supporting plates, first guide rods which slide along the first guide holes and second guide rods which slide along the second guide holes, the vertical clamping rods are located between the rear supporting plates of the pair of supporting side plates, the mounting side plates and the vertical clamping rods are located on two opposite sides of the corresponding rear supporting plates, one ends of the first guide rods are fixedly connected with the vertical clamping rods, the other ends of the first guide rods are fixedly connected with the mounting side plates, one ends of the second guide rods are fixedly connected with the mounting side plates, and the reset springs are used for providing elastic force so that the vertical clamping rods move towards the corresponding rear supporting plates and abut against the corresponding rear supporting plates;
the second guide rods of the pair of clamping assemblies are connected through the connecting rope, and the connecting rope is in a tightened state;
the driving plate is positioned below the pedal plate and is rotationally arranged on the lower bottom surface of the driving plate through a shaft lever, a torsion spring is arranged on the shaft lever and is used for providing elastic force so that the driving plate rotates upwards around the shaft lever and abuts against the pedal plate, when the driving plate abuts against the pedal plate, the rear part of the driving plate obliquely extends upwards towards the rear of the pedal plate, and the rear part of the driving plate is positioned between the rear supporting plates of the pair of supporting side plates; the lower surface that the drive plate supports is equipped with down extension's depression bar, is equipped with on the depression bar and connects the rope via hole, connect the rope and pass and connect the rope via hole.
In the process that an operator climbs a telegraph pole by utilizing the foot fastener, when the front foot part of the operator steps on the pedal, the rear foot part of the operator presses on the rear part of the drive plate, the drive plate is pressed downwards under the action of the self weight of the operator, the rear part of the drive plate rotates downwards around the shaft rod, in the process, the connecting rope is pressed downwards by the pressure rod, the second guide rods of the pair of clamping assemblies are pulled by the connecting rope, the second guide rods of the pair of clamping assemblies are mutually close, and meanwhile, the vertical clamping rods of the pair of clamping assemblies are also mutually close, so that the vertical clamping rods of the pair of clamping assemblies are clamped on the left side and the right side of the shoe of the operator, and therefore, the problem that the front foot part of the operator is easy to slip backwards when stepping on the pedal under severe weather conditions such as rain, snow, ice and the like can be effectively; furthermore, the vertical clamping rods are positioned behind the pedals, so that the vertical clamping rods of the pair of clamping assemblies are clamped behind the front soles of the operators, the front soles of the operators are wider than the rear soles (the inner sides of the rear parts of the front soles of the corresponding shoes are generally provided with concave parts), the front soles can be prevented from sliding backwards, the shoes of the operators can be more stably and reliably blocked, the front soles are prevented from slipping backwards to separate from the pedals, and the safety of the operators for climbing telegraph poles by utilizing the buckles under the severe weather conditions of rain, snow, ice and the like is effectively improved;
when an operator lifts the feet, the rear feet are lifted upwards, and at the moment, the pedal plate rotates upwards around the shaft rod under the action of the torsion spring to reset and is abutted against the pedal plate; simultaneously, the vertical clamping rods of the pair of clamping assemblies are mutually far away under the action of the return spring, so that the clamping of the shoes of the operator is released.
Preferably, the pedal comprises a bottom plate and side baffles arranged on the left side and the right side of the bottom plate, the pair of supporting side plates are fixed on the side baffles in a one-to-one correspondence mode, and the supporting side plates are parallel to the side baffles.
Preferably, the support side plate is fixed to an outer side wall of the corresponding side guard.
Preferably, an elastic pressing strip is further arranged on one side, back to the corresponding rear supporting plate, of the vertical clamping rod. Thus, rigid extrusion is avoided by the contact of the elastic pressing strip and the shoes of the operator.
Preferably, the return spring is sleeved on the first guide rod, and the return spring is positioned between the mounting side plate and the corresponding rear support plate.
Preferably, the drive plate is inclined at an angle of 10-20 degrees when the drive plate is resting on the foot rest.
Preferably, the first guide hole is parallel to the second guide hole, and an axis of the first guide hole is parallel to the bottom surface of the footboard.
Preferably, the vertical clamping rod is perpendicular to the bottom surface of the pedal.
Preferably, the lower end of the vertical clamping rod is close to the bottom surface of the pedal.
The invention has the beneficial effects that: the problem that under severe weather conditions such as rain, snow, ice and the like, the front sole of an operator is easy to slip backwards and drop out when stepping on the pedal, so that the safety of the operator is affected can be effectively solved.
Drawings
Fig. 1 is a schematic view showing a structure of the anti-slip device for the climbers of the present invention.
Fig. 2 is a view from direction a in fig. 1.
Fig. 3 is a schematic view of a partial cross-sectional structure at B-B in fig. 2.
In the figure:
a pedal 1, a bottom plate 1.1 and a side baffle 1.2;
a buckle belt 2;
the device comprises a driving plate 3, a shaft lever 3.0, a pressure lever 3.1 and a connecting rope through hole 3.2;
a support side plate 5 and a rear support plate 5.1;
the clamping assembly 6, vertical supporting rod 6.1, installation curb plate 6.2, reset spring 6.3, first guide arm 6.4, second guide arm 6.5, elastic pressing strip 6.6, guide ring 6.7.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention are clearly explained and illustrated below with reference to the accompanying drawings, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present scheme, and are not construed as limiting the scheme of the present invention.
These and other aspects of embodiments of the invention will be apparent with reference to the following description and attached drawings. In the description and drawings, particular embodiments of the invention have been disclosed in detail as being indicative of some of the ways in which the principles of the embodiments of the invention may be practiced, but it is understood that the scope of the embodiments of the invention is not limited thereby. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "front", "rear", "left", "right", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., and "several" means one or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The first embodiment is as follows: as shown in fig. 1 and 2, the anti-slip device for the climbers comprises a buckle belt 2, a pair of supporting side plates 5, a pair of clamping components 6, a connecting rope 4 and a driving plate 3. In the present embodiment, "one pair" means 2. The buckle belt is arranged in the middle of the foot pedal of the foot buckle and is used for fixing the front sole on the foot pedal.
The pair of supporting side plates 5 are symmetrically fixed on the left side and the right side of the pedal plate 1, in the embodiment, the pedal plate comprises a bottom plate 1.1 and side baffle plates 1.2 arranged on the left side and the right side of the bottom plate, the bottom plate is perpendicular to the side baffle plates, and the bottom plate and the side baffle plates are integrally bent and formed. The pair of supporting side plates are fixed on the side baffle plates in a one-to-one correspondence mode, the supporting side plates are parallel to the side baffle plates, and the supporting side plates are fixed on the outer side walls of the corresponding side baffle plates. Of course, a pair of support side plates may be fixed to the bottom wall of the footboard. The support side plate extends towards the rear side of the pedal plate and forms a rear support plate 5.1 at the rear of the pedal plate.
The clamping components 6 are arranged on the rear supporting plate in a one-to-one correspondence mode. The clamping assembly comprises a vertical clamping rod 6.1, a mounting side plate 6.2, a reset spring 6.3, a first guide hole and a second guide hole which are arranged on the rear supporting plate, a first guide rod 6.4 sliding along the first guide hole and a second guide rod 6.5 sliding along the second guide hole. The vertical clamping rods are located between the rear supporting plates of the pair of supporting side plates, and the installation side plates and the vertical clamping rods of the same clamping assembly are located on two opposite sides of the corresponding rear supporting plates. One end of the first guide rod is fixedly connected with the vertical clamping rod, and the other end of the first guide rod is fixedly connected with the installation side plate. One end of the second guide rod is fixedly connected with the mounting side plate. Reset spring is used for providing elastic force to make vertical supporting rod remove and support on the back backup pad that corresponds toward the back backup pad that corresponds. In this embodiment, the return spring is sleeved on the first guide rod, and the return spring is located between the mounting side plate and the corresponding rear support plate.
The second guide arm of a pair of centre gripping subassembly is connected through this connection rope 4, and is concrete, connects between the second guide arm that the rope is located a pair of centre gripping subassembly, connects the other end of rope and second guide arm and is connected. The connecting rope is in a tense state.
As shown in fig. 1, 2 and 3, the driving plate 3 is located below the pedal plate, and the driving plate is rotatably disposed on the lower bottom surface of the driving plate through a shaft 3.0, specifically, the front side of the driving plate is rotatably disposed on the lower bottom surface of the driving plate through the shaft, and the rear portion of the driving plate extends toward the rear of the pedal plate and is located behind the pedal plate. The shaft is provided with a torsion spring (not shown). The torsion spring is used for providing elastic force so that the driving plate rotates upwards around the shaft rod and abuts against the pedal. When the driving plate is abutted against the pedal plate, the rear part of the driving plate obliquely and obliquely extends towards the rear part of the pedal plate, and the rear part of the driving plate is positioned between the rear supporting plates of the pair of supporting side plates. In the embodiment, when the driving plate is abutted to the pedal plate, the inclination angle of the driving plate is 10-20 degrees. The lower surface of the rear part of the driving plate is provided with a pressing rod 3.1 extending downwards, and in the embodiment, the pressing rod is vertical to the driving plate. The pressure lever is provided with a connecting rope through hole 3.2, and the connecting rope passes through the connecting rope through hole.
In the process that an operator climbs a telegraph pole by utilizing the foot fastener, when the front foot part of the operator steps on the pedal, the rear foot part of the operator presses on the rear part of the drive plate, the drive plate is pressed downwards under the action of the self weight of the operator, the rear part of the drive plate rotates downwards around the shaft rod, in the process, the connecting rope is pressed downwards by the pressure rod, the second guide rods of the pair of clamping assemblies are pulled by the connecting rope, the second guide rods of the pair of clamping assemblies are mutually close, and meanwhile, the vertical clamping rods of the pair of clamping assemblies are also mutually close, so that the vertical clamping rods of the pair of clamping assemblies are clamped on the left side and the right side of the shoe of the operator, and therefore, the problem that the front foot part of the operator is easy to slip backwards when stepping on the pedal under severe weather conditions such as rain, snow, ice and the like can be effectively; furthermore, the vertical clamping rods are positioned behind the pedals, so that the vertical clamping rods of the pair of clamping assemblies are clamped behind the front soles of the operators, the front soles of the operators are wider than the rear soles (the inner sides of the rear parts of the front soles of the corresponding shoes are generally provided with concave parts), the front soles can be prevented from sliding backwards, the shoes of the operators can be more stably and reliably blocked, the front soles are prevented from slipping backwards to separate from the pedals, and the safety of the operators for climbing telegraph poles by utilizing the buckles under the severe weather conditions of rain, snow, ice and the like is effectively improved;
when an operator lifts the feet, the rear feet are lifted upwards, and at the moment, the pedal plate rotates upwards around the shaft rod under the action of the torsion spring to reset and is abutted against the pedal plate; simultaneously, the vertical clamping rods of the pair of clamping assemblies are mutually far away under the action of the return spring, so that the clamping of the shoes of the operator is released.
Specifically, the first guide hole is parallel to the second guide hole, and the axis of the first guide hole is parallel to the bottom surface of the pedal. The vertical clamping rod is vertical to the bottom surface of the pedal. The lower end of the vertical clamping rod is close to the bottom surface of the pedal plate, and in the embodiment, the lower end of the vertical clamping rod is positioned below the bottom surface of the pedal plate. The second guide rods of the pair of clamping assemblies are coaxially distributed. The second guide rod is located below the driving plate.
As shown in fig. 1 and 2, the clamping assembly further comprises a guide ring 6.7, which is fixed on the corresponding support side plate through a connecting piece. The guide rings are coaxially distributed with the corresponding second guide rods and are positioned between the second guide rods of the pair of clamping assemblies. The connecting rope passes through the guide ring. So, the in-process that the rope is down pressed will be connected to the depression bar, and the second guide arm can not receive decurrent pulling force, is favorable to the second guide arm to slide along the second guiding hole.
As shown in fig. 1 and 2, an elastic pressing strip 6.6 is further arranged on one side of the vertical clamping rod, which is back to the corresponding rear supporting plate. Thus, rigid extrusion is avoided by the contact of the elastic pressing strip and the shoes of the operator.
In this embodiment, a lower limiting member (not shown in the figure) is further disposed below the driving plate, the lower limiting member is fixed to the rear supporting plate through a connecting member, and the lower limiting member is used for limiting the angle of the driving plate rotating downward around the shaft.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, alterations and equivalents of the above embodiments according to the technical spirit of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (9)
1. The utility model provides a climbers antiskid, characterized by includes:
the pair of supporting side plates are symmetrically fixed at the left side and the right side of the pedal plate, extend towards the rear side of the pedal plate and form a rear supporting plate at the rear part of the pedal plate;
the clamping assemblies are arranged on the rear supporting plates in a one-to-one correspondence mode and comprise vertical clamping rods, mounting side plates, reset springs, first guide holes and second guide holes which are formed in the rear supporting plates, first guide rods which slide along the first guide holes and second guide rods which slide along the second guide holes, the vertical clamping rods are located between the rear supporting plates of the pair of supporting side plates, the mounting side plates and the vertical clamping rods are located on two opposite sides of the corresponding rear supporting plates, one ends of the first guide rods are fixedly connected with the vertical clamping rods, the other ends of the first guide rods are fixedly connected with the mounting side plates, one ends of the second guide rods are fixedly connected with the mounting side plates, and the reset springs are used for providing elastic force so that the vertical clamping rods move towards the corresponding rear supporting plates and abut against the corresponding rear supporting plates;
the second guide rods of the pair of clamping assemblies are connected through the connecting rope, and the connecting rope is in a tightened state;
the driving plate is positioned below the pedal plate and is rotationally arranged on the lower bottom surface of the driving plate through a shaft lever, a torsion spring is arranged on the shaft lever and is used for providing elastic force so that the driving plate rotates upwards around the shaft lever and abuts against the pedal plate, when the driving plate abuts against the pedal plate, the rear part of the driving plate obliquely extends upwards towards the rear of the pedal plate, and the rear part of the driving plate is positioned between the rear supporting plates of the pair of supporting side plates; the lower surface that the drive plate supports is equipped with down extension's depression bar, is equipped with on the depression bar and connects the rope via hole, connect the rope and pass and connect the rope via hole.
2. The anti-slip device for grapplers as claimed in claim 1, wherein the pedal comprises a bottom plate and side guards disposed at left and right sides of the bottom plate, and a pair of supporting side plates are fixed to the side guards in a one-to-one correspondence, and the supporting side plates are parallel to the side guards.
3. The anti-slip device as defined in claim 1, wherein said support side plate is fixed to an outer side wall of the corresponding side guard.
4. The anti-slip device for the grapplers as claimed in claim 1, 2 or 3, wherein an elastic pressing strip is further provided on one side of the vertical clamping rod facing away from the corresponding rear supporting plate.
5. The anti-slip device for grapplers of claim 1, 2 or 3, wherein the return spring is sleeved on the first guide rod and the return spring is positioned between the mounting side plate and the corresponding rear support plate.
6. A climber slip prevention device as claimed in claim 1, 2 or 3, wherein the driving plate is inclined at an angle of 10 to 20 degrees when the driving plate abuts on the foot rest.
7. The anti-slip device for grapplers as claimed in claim 1, 2 or 3, wherein the first guide hole is parallel to the second guide hole, and an axis of the first guide hole is parallel to a bottom surface of the footboard.
8. The anti-slip device for grapplers as claimed in claim 1, 2 or 3, wherein said vertical clamping rod is perpendicular to the bottom surface of the footboard.
9. The anti-slip device for foot fastener according to claim 1, 2 or 3, further comprising a fastener strip disposed in the middle of the foot pedal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011018244.4A CN112295180B (en) | 2020-09-24 | 2020-09-24 | Climbers antiskid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011018244.4A CN112295180B (en) | 2020-09-24 | 2020-09-24 | Climbers antiskid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112295180A true CN112295180A (en) | 2021-02-02 |
| CN112295180B CN112295180B (en) | 2021-07-06 |
Family
ID=74489150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011018244.4A Active CN112295180B (en) | 2020-09-24 | 2020-09-24 | Climbers antiskid |
Country Status (1)
| Country | Link |
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| CN (1) | CN112295180B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3968858A (en) * | 1975-05-14 | 1976-07-13 | Vollan Douglas D | Climbing device |
| US4225013A (en) * | 1979-05-03 | 1980-09-30 | Sample George A | Upright climbing and platform device |
| CN205913724U (en) * | 2016-08-02 | 2017-02-01 | 国网冀北电力有限公司张家口供电公司 | Pincers card formula safety climbers |
| CN206688148U (en) * | 2017-05-02 | 2017-12-01 | 三峡大学 | Self-replaced type climbers |
| CN206700638U (en) * | 2017-04-24 | 2017-12-05 | 新乡职业技术学院 | A kind of anti-skidding electrician's climbers |
| CN206823080U (en) * | 2017-05-17 | 2018-01-02 | 国网山东省电力公司梁山县供电公司 | A kind of Novel climber |
| CN206934637U (en) * | 2017-07-26 | 2018-01-30 | 国网江苏省电力公司徐州供电公司 | Special electrician's climbing boot of riser class steel column |
| CN207462582U (en) * | 2017-07-13 | 2018-06-08 | 朱丹 | A kind of portable power repair lineman climber |
| CN210044799U (en) * | 2019-05-08 | 2020-02-11 | 广西电网有限责任公司贵港平南供电局 | Anti-skidding climbers |
-
2020
- 2020-09-24 CN CN202011018244.4A patent/CN112295180B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3968858A (en) * | 1975-05-14 | 1976-07-13 | Vollan Douglas D | Climbing device |
| US4225013A (en) * | 1979-05-03 | 1980-09-30 | Sample George A | Upright climbing and platform device |
| CN205913724U (en) * | 2016-08-02 | 2017-02-01 | 国网冀北电力有限公司张家口供电公司 | Pincers card formula safety climbers |
| CN206700638U (en) * | 2017-04-24 | 2017-12-05 | 新乡职业技术学院 | A kind of anti-skidding electrician's climbers |
| CN206688148U (en) * | 2017-05-02 | 2017-12-01 | 三峡大学 | Self-replaced type climbers |
| CN206823080U (en) * | 2017-05-17 | 2018-01-02 | 国网山东省电力公司梁山县供电公司 | A kind of Novel climber |
| CN207462582U (en) * | 2017-07-13 | 2018-06-08 | 朱丹 | A kind of portable power repair lineman climber |
| CN206934637U (en) * | 2017-07-26 | 2018-01-30 | 国网江苏省电力公司徐州供电公司 | Special electrician's climbing boot of riser class steel column |
| CN210044799U (en) * | 2019-05-08 | 2020-02-11 | 广西电网有限责任公司贵港平南供电局 | Anti-skidding climbers |
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| Publication number | Publication date |
|---|---|
| CN112295180B (en) | 2021-07-06 |
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