CN114382402A

CN114382402A - Anti-falling ladder

Info

Publication number: CN114382402A
Application number: CN202210077998.XA
Authority: CN
Inventors: 黄庆铿
Original assignee: Guangdong Power Grid Co Ltd; Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
Current assignee: Guangdong Power Grid Co Ltd; Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date: 2022-01-24
Filing date: 2022-01-24
Publication date: 2022-04-22

Abstract

The invention belongs to the technical field of climbing equipment and discloses an anti-falling ladder which comprises a ladder stand body and an anti-falling assembly. Wherein, the cat ladder body includes support frame and pedal piece, and the support frame setting is on the pole, and each pedal piece sets up along the length direction interval of support frame, and all is located the support frame on the width direction of support frame. The anti-falling assembly comprises an anti-falling rod and a safety belt, the anti-falling rod is arranged beside the support frame side by side, the safety belt is enclosed outside the support frame and the anti-falling rod, and a closed loop structure can be formed. The anti-falling rod is provided with a plurality of anti-falling bulges at intervals, the lower sides of the anti-falling bulges are inclined to the anti-falling rod, and the anti-falling bulges and the anti-falling rod form an obtuse angle opening with the opening direction facing downwards. When a ladder stand person goes upwards, the safety belt slides upwards along the lower side of the anti-falling bulge under the driving of the ladder stand person and slides over the anti-falling bulges one by one along with the rising of the ladder stand person. Each upper side of the anti-falling protrusions is provided with a limit groove, and the safety belt can be clamped in any limit groove when a ladder climber falls down, so that the safety of the ladder climber is protected.

Description

Anti-falling ladder

Technical Field

The invention relates to the technical field of ascending equipment, in particular to an anti-falling ladder.

Background

When climbing the operation of shaft tower, the safety belt can protect operation personnel's personal safety, avoids taking place the risk of falling.

At present, tools and appliances used in pole climbing operation of a distribution network pole are foot buckles, climbing plates or climbing ropes. When the climbing plate or the climbing rope is used for climbing the tower for operation, the use of the safety belt puts high requirements on the proficiency of operators, and the operation difficulty is high. In the process of using the buckles to go up and down the electric pole, the backup safety belt and the main safety belt need to be switched when crossing the cross arm, namely, the backup safety belt is installed, the main safety belt is removed, the cross arm is crossed, the main safety belt is installed and the backup safety belt is removed, the physical strength of an operator is seriously consumed in the repeated switching process, and the operation efficiency of the operator is reduced.

Disclosure of Invention

The invention aims to provide an anti-falling ladder, which does not need to be manually switched by an operator, reduces the workload of the operator and improves the operation efficiency.

In order to achieve the purpose, the invention adopts the following technical scheme:

an anti-falling ladder, comprising:

the ladder stand comprises a ladder stand body and a plurality of pedal pieces, wherein the support stand is configured to be arranged on an electric pole, and each pedal piece is positioned in the support stand in the width direction of the support stand and is arranged at intervals along the length direction of the support stand;

prevent weighing down the subassembly, including preventing weighing down pole and safety belt, prevent weighing down the pole with the support frame sets up side by side, the safety belt encloses to be established the support frame with prevent weighing down outside the pole, and can form closed loop structure, prevent weighing down the pole and go up the interval and be equipped with a plurality of archs of preventing weighing down, each prevent weighing down bellied lower surface certainly prevent weighing down the pole slope and upwards extending, the safety belt can be in arbitrary when the cat ladder person weighs down prevent weighing down bellied upper surface.

Optionally, the support frame includes first handrail pole and second handrail pole, first handrail pole with the second handrail pole sets up each one side of step spare, prevent that the drop bar sets up each the opposite side of step spare, the safety belt encloses and establishes outside first handrail pole with the second handrail pole.

Optionally, the supporting frame includes a fixing rod, and each of the pedals is disposed on the fixing rod at intervals and can rotate relative to the fixing rod to have a use position and a storage position.

Optionally, the ladder stand body further includes limiting members corresponding to the pedal members one to one, the limiting members are arranged on the fixing rod at intervals, and the pedal members can abut against the limiting members corresponding to the pedal members.

Optionally, the ladder stand body further comprises a movable rod and a fixing assembly, the movable rod and the fixed rod are arranged side by side and hinged to the pedal members, the movable rod can be moved to drive the pedal members to rotate relative to the fixed rod, the fixing assembly is arranged on the supporting frame, and the fixing assembly can be connected with the movable rod to selectively fix the pedal members to the use positions or the storage positions.

Optionally, the fixing assembly comprises a fixing piece and a lock, the fixing piece is arranged on the supporting frame, and the lock is used for locking the movable rod and the fixing piece.

Optionally, a pull ring is arranged on the movable rod.

Optionally, the lock is a padlock for locking the mount and the tab.

Optionally, prevent weighing down the ladder still includes coupling assembling, coupling assembling includes the staple bolt, the staple bolt can overlap and establish on the pole, the support frame with the staple bolt links to each other.

Optionally, coupling assembling still includes the extension rod, the one end of extension rod with the staple bolt links to each other, the other end to the pole extends outward, the support frame sets up on the extension rod.

Has the advantages that:

the invention provides an anti-falling ladder, which is characterized in that a safety belt is tied on the body of a ladder climber when the ladder climber is ready to climb. Prevent weighing down bellied downside slope in preventing weighing down the pole, and with prevent weighing down the obtuse angle opening that the pole formed opening direction down, when the climbing ladder person climbs upwards, the safety belt can be followed and prevented weighing down bellied downside lapse under the drive of climbing ladder person to along with the rising of climbing ladder person, slide each one by one and prevent weighing down the arch, in order to reach the high altitude and carry out the operation. Prevent weighing down bellied upside and be equipped with the spacing groove, when the unexpected tenesmus of cat ladder person appearance, the safety belt can block in arbitrary spacing groove under cat ladder person's drive, avoids the safety belt to continue the tenesmus to cat ladder person's safety has been protected. According to the anti-falling ladder provided by the invention, the safety belt is always tied on the body of a ladder climber in the process of overhead operation, the ladder climber does not need to frequently operate the safety belt, the workload of the ladder climber is reduced, and the operation efficiency of the ladder climber is improved.

Drawings

FIG. 1 is a side view of a fall arrest ladder provided in accordance with an embodiment of the present invention;

FIG. 2 is a front view of the fall arrest ladder (with the footrest open) provided in accordance with one embodiment of the present invention;

FIG. 3 is a front view of the fall arrest ladder (with the footrest stowed) provided by one embodiment of the present invention.

In the figure:

1. a ladder body; 11. a support frame; 111. fixing the rod; 112. a first grab rail; 113. a first connecting rod; 114. a second grab rail; 115. a second connecting rod; 12. a foot pedal; 13. a movable rod; 131. a pull ring; 14. a fixing assembly; 141. a fixing member;

2. a fall arrest assembly; 21. preventing falling down the rod; 211. the anti-falling bulge is arranged on the front end of the frame;

3. a connecting assembly; 31. hooping; 32. an extension rod; 33. a rectangular frame;

4. an electric pole.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", "left", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

Example one

This embodiment provides a prevent weighing down ladder, and the cat ladder person need not frequent operation safety belt at the high altitude construction in-process, has reduced cat ladder person's work load, has promoted the operating efficiency. As shown in fig. 1-3, the anti-falling ladder comprises a ladder body 1 and an anti-falling assembly 2.

Wherein, cat ladder body 1 includes support frame 11 and a plurality of step piece 12, and support frame 11 is configured to set up on pole 4, and each step piece 12 sets up along the length direction interval of support frame 11. In this embodiment, as shown in fig. 1 and 2, the pole 4 is vertically buried, the support frame 11 is arranged beside the pole 4, and the ladder climber can climb to the high place of the pole 4 by each pedal 12 to perform electric power overhaul operation.

The anti-falling assembly 2 comprises an anti-falling rod 21 and a safety belt (not shown in the figure), the anti-falling rod 21 is arranged on the support frame 11 side by side, and the safety belt is arranged outside the support frame 11 and the anti-falling rod 21 in an enclosing manner and can form a closed loop structure. The cat ladder person is being connected the safety belt on one's body the back, can scramble, goes upward or down the in-process at cat ladder person, and the safety belt can follow support frame 11 and prevent weighing down pole 21 synchronous up-and-down motion under cat ladder person's drive. To avoid the seat belt from getting caught between any adjacent footrests 12, each of the footrests 12 is located within the support frame 11 in the width direction of the support frame 11.

As shown in fig. 1, a plurality of anti-falling protrusions 211 are provided at intervals on the anti-falling rod 21, the lower surface of each anti-falling protrusion 211 extends obliquely upward from the anti-falling rod 21, and the safety belt can be caught on the upper surface of any of the anti-falling protrusions 211 when a climber falls down. In this embodiment, the upper surface of each anti-falling protrusion 211 is connected to the lower surface of the adjacent anti-falling protrusion 211 above the upper surface of the anti-falling protrusion 211 to form a limiting groove. When the cat ladder person climbed upwards, the safety belt can be along preventing weighing down the lower surface of protruding 211 and upwards sliding under cat ladder person's drive to along with cat ladder person's rising, slide each one by one and prevent weighing down protruding 211, in order to reach the high altitude in carry out the operation. As the climber descends from the high altitude, the climber can adjust the length of the safety belt to slacken the safety belt to a position adjacent the outer edge of the anti-fall projection 211. And in the descending process, the safety belt is continuously controlled to be not clamped on the upper surface of each anti-falling bulge 211, so that the smooth descending is realized. To facilitate control by a ladder climber, the harness is preferably a flat harness. When the ladder stand person accidentally falls down, the safety belt can be tensioned instantly under the action of the gravity of the ladder stand person, so that the safety belt is clamped in the adjacent limiting groove, the safety belt is prevented from continuously falling down, and the safety of the ladder stand person is protected.

Alternatively, as shown in fig. 2 and 3, the supporting frame 11 includes a fixing rod 111, each of the footrests 12 is disposed on the fixing rod 111 at intervals, each of the footrests 12 can rotate relative to the fixing rod 111 to have a use position and a storage position, i.e., the footrests 12 can be opened when in use and can be stored when not in use. In this embodiment, the fixing rod 111 is vertically disposed beside the electric pole 4, and the pedal members 12 are pedals, each of which is hinged on the fixing rod 111.

Further, cat ladder body 1 still includes movable rod 13 and fixed subassembly 14, and movable rod 13 sets up side by side with dead lever 111, and all articulates with each step piece 12, removes movable rod 13 and can drive each step piece 12 relative dead lever 111 and rotate to accomodate or open each step piece 12 simultaneously, convenient operation. The fixing assembly 14 is disposed on the supporting frame 11, and the fixing assembly 14 can be connected to the movable rod 13 to selectively fix each footrest member 12 at the use position or the storage position. Specifically, when the anti-falling ladder is used, the fixed assembly 14 and the movable rod 13 can be mutually fixed and can keep each pedal piece 12 in a horizontal state, and the pedal pieces 12 are supported by the movable rod 13 and the fixed rod 111 together, so that the fixing is stable and the safety is high. When the anti-falling ladder is not used, the fixed component 14 and the movable component can be mutually fixed and keep each pedal 12 in an inclined state, so that other people can be prevented from climbing randomly.

To facilitate the operation of the movable lever 13, optionally, a pull ring 131 is provided on the movable lever 13. In this embodiment, the lower end of the movable rod 13 is provided with a pull ring 131, and when a person climbing a ladder is ready to climb the ladder, the user can open each step member 12 by pulling the pull ring 131, which is convenient to operate.

Optionally, the fixing assembly 14 includes a fixing member 141 and a lock, the fixing member 141 is disposed on the supporting frame 11, and the lock is used for locking the movable rod 13 and the fixing member 141. When the anti-falling ladder is used, the lock can lock the movable rod 13 at the first position on the fixed member 141 to fix each of the footrests 12 in a horizontal state. When the anti-falling ladder is not used, the lock can lock the movable rod 13 at the second position on the fixing piece 141 so as to prevent non-working personnel from climbing the anti-falling ladder. In this embodiment, the fixing member 141 is disposed at the lower end of the supporting frame 11, a first position of the fixing member is provided with a first limiting protrusion, a second position of the fixing member is provided with a second limiting protrusion, the lock is a padlock, and when the padlock locks the pull ring 131 on the first limiting protrusion, each pedal member 12 is kept horizontal; when the padlock locks the tab 131 to the second limit projection, each of the footrests 11 remains inclined.

In order to facilitate climbing of the ladder, optionally, the support frame 11 further includes a first grab bar 112, a first connecting rod 113, a second grab bar 114 and a second connecting rod 115, the first connecting rod 113 and the second connecting rod 115 are oppositely disposed at two ends of the fixing rod 111, two ends of the first grab bar 112 are respectively connected with the first connecting rod 113 and the second connecting rod 115 located at one side of the fixing rod 111, and two ends of the second grab bar 114 are respectively connected with the first connecting rod 113 and the second connecting rod 115 located at the other side of the fixing rod 111. That is to say, when climbing the anti-falling ladder, the ladder climber can respectively hold the first grab rail 112 and the second grab rail 114 with two hands, and the ladder climber climbs stably with high safety.

Alternatively, the first and second grab bars 112, 114 are disposed on one side of each footrest member 12, the fall arrest bar 21 is disposed on the other side of each footrest member 12, and the safety belt is enclosed outside the first and second grab bars 112, 114. In this embodiment, each grab bar is arranged at the climbing side, the falling-preventing rod 21 is arranged at one side close to the electric pole 4, and each falling-preventing protrusion 211 faces the electric pole 4. When the cat ladder person falls in accident, can drive the safety belt downstream that is located the climbing side to the safety belt card that drives to be located 4 one sides of pole realizes the locking of safety belt in any spacing groove, with the personal safety of protection cat ladder person. Further, the lower extreme of gag lever post is not less than 3m apart from the height on ground, and the safety belt card also can not take place the touching with ground when the spacing groove of lowest department, has protected cat ladder person's personal safety.

Optionally, prevent weighing down the ladder and still include coupling assembling 3, and coupling assembling 3 includes staple bolt 31, and staple bolt 31 can overlap and establish on pole 4, and first connecting rod 113 and second connecting rod 115 all link to each other with staple bolt 31. The hoop 31 is reliable in connection and convenient to disassemble and assemble. In this embodiment, the anchor ear 31 is provided with a plurality of, and each anchor ear 31 interval cover is established on pole 4, and a plurality of anchor ears 31 are connected reliably, and the security is high.

For preventing that knife switch, link fitting etc. on support frame 11 and the pole 4 from taking place the position and interfering, optionally, coupling assembling 3 still includes extension rod 32, and extension rod 32's one end links to each other with staple bolt 31, and the other end extends to 4 outsides of poles, and support frame 11 sets up on extension rod 32. That is, the extension pole 32 can space the support frame 11 from the electric pole 4, and an installation space is reserved for equipment on the electric pole 4.

In this embodiment, the connecting assembly 3 further includes a rectangular frame 33, the first connecting rod 113 and the second connecting rod 115 are respectively connected to the upper end and the lower end of the rectangular frame 33, and the rectangular frame 33 is fixedly connected to the outer sides of the hoops 31 through the extending rods 32 corresponding to the hoops 31 one to one. Preferably, the lower end of the rectangular frame 33 is not less than 3m from the ground, and the safety belt is also passed through the rectangular frame 33. The rectangular frame 33 can be used as a second guarantee after the anti-falling rod 21 fails, and the safety belt is finally clamped on a lower rod piece of the rectangular frame 33, so that the safety belt is prevented from continuously falling to enable a ladder climber to touch the ground, and the personal safety of the ladder climber is protected.

In using the ladder of the present embodiment, first, the padlock is opened with a key, and the pull ring 131 is operated to adjust the movable lever 13 so that each of the footrests 12 is horizontal. Then, the movable lever 13 is fixed to keep each step member 12 stationary. Then, the safety belt is passed through the rectangular frame 33 and is bound to the climber body by passing around the fall prevention bar 21, the first grab rail 112, and the second grab rail 114, and the climber can climb. When a ladder climber goes upwards, the safety belt slides upwards along the lower side of each anti-falling protrusion 211 under the driving of the ladder climber and slides through each anti-falling protrusion 211 one by one along with the rising of the ladder climber. When the ladder climber accidentally falls down, the safety belt can be clamped in any limiting groove, so that the personal safety of the ladder climber is protected. In the embodiment, the length of the electric pole 4 is 15m, and the length of the anti-falling ladder is 5.1m-5.5m, and of course, the length of the anti-falling ladder can be designed according to the requirements.

Example two

The embodiment provides a prevent weighing down ladder, should prevent weighing down ladder the same basically with in the embodiment one, the main difference lies in, the cat ladder body still includes the locating part with each step spare one-to-one, each locating part interval sets up on the dead lever, each step spare can support on the locating part rather than corresponding. In this embodiment, the fixing rod is provided with limit stops corresponding to the pedals one by one, and each pedal can be supported on the adjacent limit stop when rotating to the horizontal position. That is, each limit stop can support each pedal together with the fixing rod, so that each pedal is stably fixed for a ladder climber to step on.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A fall prevention ladder is characterized by comprising:

the ladder stand body (1) comprises a support frame (11) and a plurality of pedal pieces (12), the support frame (11) is configured to be arranged on an electric pole (4), and each pedal piece (12) is located in the support frame (11) in the width direction of the support frame (11) and arranged at intervals along the length direction of the support frame (11);

prevent weighing down subassembly (2), including preventing weighing down pole (21) and safety belt, prevent weighing down pole (21) with support frame (11) set up side by side, the safety belt encloses to be established support frame (11) with prevent weighing down outside pole (21), and can form closed loop structure, prevent weighing down pole (21) and go up the interval and be equipped with a plurality of archs (211) of preventing weighing down, each prevent weighing down the lower surface of protruding (211) certainly prevent weighing down pole (21) slope upwards extension, the safety belt can be in arbitrary when the cat ladder person weighs down prevent weighing down the upper surface of protruding (211).

2. The fall arrest ladder according to claim 1, characterized in that the support frame (11) comprises a first grab bar (112) and a second grab bar (114), the first grab bar (112) and the second grab bar (114) being arranged on one side of each of the footrests (12), the fall arrest bar (21) being arranged on the other side of each of the footrests (12), the safety belt being enclosed outside the first grab bar (112) and the second grab bar (114).

3. The anti-falling ladder according to claim 1, characterized in that the support frame (11) comprises a fixed rod (111), and the treading members (12) are arranged on the fixed rod (111) at intervals and can rotate relative to the fixed rod (111) to form a using position and a receiving position.

4. The ladder according to claim 3, characterized in that the ladder body (1) further comprises a limiting member corresponding to each step member (12), the limiting members are arranged on the fixing rod (111) at intervals, and each step member (12) can abut against the limiting member corresponding to the step member.

5. The ladder according to claim 3, characterized in that the ladder body (1) further comprises a movable rod (13) and a fixed assembly (14), the movable rod (13) is arranged side by side with the fixed rod (111) and is hinged with each step member (12), the movable rod (13) is moved to drive each step member (12) to rotate relative to the fixed rod (111), the fixed assembly (14) is arranged on the support frame (11), and the fixed assembly (14) is connected with the movable rod (13) to selectively fix each step member (12) at the using position or the accommodating position.

6. The fall arrest ladder according to claim 5, characterized in that the fixing assembly (14) comprises a fixing (141) and a lock, the fixing (141) being arranged on the support frame (11), the lock being used to lock the movable bar (13) with the fixing (141).

7. The ladder according to claim 6, characterized in that said movable bar (13) is provided with a pull ring (131).

8. The fall arrest ladder according to claim 7, characterized in that the lock is a padlock for locking the fixture (141) with the tab (131).

9. The anti-falling ladder according to any one of claims 1-8, characterized in that the anti-falling ladder further comprises a connecting assembly (3), the connecting assembly (3) comprises a hoop (31), the hoop (31) can be sleeved on the electric pole (4), and the support frame (11) is connected with the hoop (31).

10. The anti-falling ladder according to claim 9, characterized in that the connecting assembly (3) further comprises an extension rod (32), one end of the extension rod (32) is connected with the hoop (31), the other end of the extension rod extends out of the electric pole (4), and the support frame (11) is arranged on the extension rod (32).