CN215671982U

CN215671982U - Carbon fiber suspension extension ladder for high-altitude operation

Info

Publication number: CN215671982U
Application number: CN202121603025.2U
Authority: CN
Inventors: 赵登岳; 苗文利; 苗来全
Original assignee: Hanzhong Xiangrunhe Power Technology Co ltd
Current assignee: Hanzhong Xiangrunhe Power Technology Co ltd
Priority date: 2021-07-14
Filing date: 2021-07-14
Publication date: 2022-01-28
Anticipated expiration: 2031-07-14

Abstract

The patent discloses a carbon fiber suspension extension ladder for high-altitude operation, wherein two vertical upright posts are of a telescopic structure formed by sequentially sleeving a plurality of hollow vertical rods (5) with different diameters; two ends of the cross rods (3) are connected to the lower ends of the vertical rods (5) at two sides through the joints (4); one end of a pull rope (2) is connected to an inner hole of the lowest end vertical rod (5) of the left side column, the pull rope (2) upwards penetrates through the inner hole of the left side column and then extends out of the upper end of the inner hole of the highest end vertical rod (5), then downwards penetrates through the inner hole of the right side column through the inner hole of the highest end vertical rod (5) of the right side column, and the other end of the pull rope (2) is connected with the inner hole of the lowest end vertical rod (5) of the right side column; the uppermost ends of the upright columns on the two sides are provided with hooks (1); the cross rod (3), the vertical rod (5), the hook (1) and the joint (4) are made of carbon fibers. The advantages are that: small volume, light weight, safety, reliability, simple structure and low manufacturing cost.

Description

Carbon fiber suspension extension ladder for high-altitude operation

Technical Field

The patent relates to an extension ladder, especially a carbon fiber hangs extension ladder for high altitude construction.

Background

The ladder for high-altitude operation is taken as an outdoor mobile climbing tool, is carried by operators when going out for work, and is required to be small in size, light in weight, convenient to carry and simple to use, so that a telescopic ladder is mostly adopted; present commonly used high altitude construction extension ladder is aluminum alloy, bamboo wood material preparation generally, but still has the size big, and metal density leads to ladder weight big greatly, and metal and bamboo wood material rigidity are big, damages easily in the transportation and warp, and the transportation carries inconvenient scheduling problem, and extension ladder structure is complicated simultaneously, and telescopic tube connection structure is complicated, and the operation is inconvenient. Particularly, when a newly built electric power line is constructed, overhauled and maintained, a ladder needs to be transported to a working site of a power transmission line, a person climbs the tower to erect the ladder on the tower or a guide wire, and the person carries out high-altitude construction on the ladder, so that higher requirements on the size, weight, portability, difficulty in operation, reliability and the like of the ladder are further provided, and the research and development of the ladder for high-altitude operation of electric power by an electric power scientific research department are continued.

Disclosure of Invention

The purpose of this patent is exactly to design a carbon fiber for high altitude construction hangs extension ladder, adopts carbon fiber material preparation unique, light in weight, the carbon fiber for high altitude construction that conveniently carries to hang extension ladder.

The technical scheme of this patent is: the utility model provides a high altitude construction hangs extension ladder with carbon fiber, characterized by: the two vertical upright posts are telescopic structures formed by sequentially sleeving a plurality of hollow upright posts with different diameters; two ends of the cross rods are fixedly connected to the outer circles at the lower ends of the corresponding vertical rods at two sides through joints; one end of a pull rope is connected to the inner wall of the inner hole of the vertical rod at the lowest end of the left upright post, the pull rope upwards penetrates through the inner hole of the left upright post and then extends out of the upper end of the inner hole of the vertical rod at the highest end, then the pull rope downwards penetrates through the inner hole of the vertical rod at the highest end of the right upright post and the inner wall of the inner hole of the vertical rod at the lowest end of the right upright post; the upper ends of the uppermost vertical rods of the two side vertical columns are provided with hooks; the cross bar, the vertical bar, the hook and the joint are made of carbon fiber;

the upper part of the excircle of each vertical rod is provided with a limiting flange connected with the upper vertical rod, the lower part of the inner hole of each vertical rod is provided with a limiting flange connected with the lower vertical rod, the lower vertical rod can slide up and down in the upper vertical rod, and the upper limiting flange of the excircle of each vertical rod after moving downwards is clamped on the limiting flange at the lower part of the inner hole of the adjacent upper vertical rod;

the cross rod is of a hollow structure, the joint is of an L-shaped structure, one side of the L-shaped joint is a shaft head with a positioning step, the other side of the L-shaped joint is a hollow circular tube, the diameter of the lower end of the vertical rod is matched with the diameter of an inner hole of the hollow circular tube, the positioning step is arranged on the lower portion of the inner hole of the hollow circular tube, the lower end of the vertical rod is inserted into the hollow circular tube, the end face of the vertical rod is clamped on the positioning step on the lower portion of the joint, and the joint and the lower end of the vertical rod are fixedly connected through screws or in a riveting mode; the diameter of the L-shaped shaft head is matched with the diameter of the inner hole at the end part of the cross rod, the shaft head of the L-shaped joint is inserted into the end part hole of the cross rod, and the joint and the end part of the cross rod are fixedly connected in a screw connection or riveting mode;

the middle pedal surface of the cross rod is provided with anti-skid grains.

The advantage of this patent is:

1) the carbon fiber is a novel high-strength fiber material, the carbon fiber material is 'soft outside and rigid inside', the mass is lighter than that of aluminum alloy, but the strength is higher than that of steel, and the flexibility and the machinability are good, so that the carbon fiber extension ladder can be made of fewer materials under the condition that the strength completely meets the bearing requirement, and the extension ladder has small volume, light weight, safety and reliability;

2) the connecting structure of each vertical rod of the upright post is simplified by adopting a pull rope type tightening structure, and the upright post is convenient to stretch and retract and convenient to store and carry; the two ends of the pull rope are connected to the vertical rods at the lowest ends of the vertical rods at the two sides, so that the stress of the vertical rods at the two sides can be balanced, the vertical rods at the lower ends can be prevented from falling off accidentally, and the pull rope can be used for storage operation and can also play a role of a safety rope;

3) the connector, the cross rod and the vertical rod are of an insertion structure and are fixedly connected through screws or rivets, so that the connector structure is simplified, the machining difficulty of carbon fibers is reduced, and the manufacturing cost is reduced.

Drawings

FIG. 1: a front view of the telescopic ladder in a contraction state;

FIG. 2: a telescopic ladder is in a contracted state and viewed from the right;

FIG. 3: the first ladder section and the second ladder section are in cross section;

FIG. 4: a cross-sectional view of a unit ladder section;

FIG. 5: a front view of the expansion ladder in an expansion state;

FIG. 6: a right view of the expansion ladder in an expansion state;

FIG. 7: a front view of the joint enlarging structure;

FIG. 8: a top view of the joint amplifying structure;

in the figure: 1-hooking; 2-pulling a rope; 3-a cross bar; 4-a linker; 5-vertical rod; 6-a second ladder section; 7-a first ladder section; 8-nth ladder sections; 9-connecting hole; 10-threaded hole.

Detailed Description

The following detailed description of the present patent refers to the accompanying drawings and detailed description.

As shown in fig. 1, 2, 5, and 6, the carbon fiber suspended extension ladder for overhead working described in this patent includes two vertical parallel columns and a plurality of cross bars 3 horizontally disposed between the two columns, wherein each column is a telescopic structure formed by sequentially sleeving a plurality of hollow vertical bars 5 whose diameters are sequentially reduced from top to bottom, and two ends of the plurality of horizontally disposed cross bars 3 are fixedly connected to the outer circles of the lower ends of the corresponding vertical bars 5 at two sides through joints 4; a cross rod 3 and vertical rods 5 fixedly connected with the two ends of the cross rod form a unit ladder section, and the unit ladder section is shown in figure 4; the extension ladder comprises a plurality of unit ladder sections; the first ladder section 7 and the second ladder section 6 are structurally and connected as shown in fig. 3, wherein the first ladder section 7 is the lowermost ladder section, and the second ladder section 6 is the upper ladder section adjacent to the first ladder section. The first ladder section 7, the second ladder section 6 and other ladder sections are all unit ladder sections, the embodiment has N unit ladder sections (N is more than 2), the uppermost ladder section is the Nth ladder section 8, the height of the Nth ladder section 8 is shorter than that of other unit ladder sections, and the upper ends of the uppermost vertical rods 5 of the upright columns at two sides, namely the upper end of the Nth ladder section 8, are provided with the hooks 1; the hook 1 and the inner hole wall of the vertical rod 5 of the Nth ladder section 8 are integrally manufactured and fixedly connected. The hook 1 is used for hanging the extension ladder on a high-altitude wire or a tower or other supporting bodies. The middle pedal surface of the cross rod 3 is provided with anti-skid grains. The cross rod 3, the vertical rod 5, the hook 1 and the joint 4 are made of carbon fibers.

The upper part of the inner hole of the vertical rod 5 at the lowest end of the vertical columns at the left side and the right side is provided with a pull rope connecting hook which is fixed on the inner wall of the inner hole of the vertical rod 5; the pull rope 2 is made of high-strength nylon rope or high-strength polyester fiber rope. One end fixed connection of stay cord 2 is on the stay cord hookup hook on the 5 hole inner walls of the lower extreme montant of left side stand, stay cord 2 upwards passes and stretches out from the hole upper end of the montant 5 of the top after each montant 5 hole of left side stand in proper order, the hole of the montant 5 of right side stand penetrates downwards in proper order again through the right side stand, stay cord hookup hook fixed connection on the other end of stay cord 2 and the hole inner wall of the lower extreme montant 5 of right side stand, the extension ladder expandes the back like this, the shape of stay cord 2 is opening U type down, the length of stay cord 2 uses the montant 5 of both sides all to expand just as the standard, should not the overlength.

As shown in fig. 3 and 4, the upper part of the outer circle of each vertical rod 5 is provided with a limit flange connected with the next vertical rod 5, the lower part of the inner hole of each vertical rod 5 is provided with a limit flange connected with the next vertical rod 5, the diameter of the limit flange on the upper part of the outer circle of each vertical rod 5 is matched with the diameter of the inner hole of the adjacent previous vertical rod 5, and the diameter of the limit flange on the lower part of the inner hole of each vertical rod 5 is matched with the diameter of the outer circle of the adjacent next vertical rod 5; each vertical rod 5 can slide up and down in the adjacent upper vertical rod 5, and the upper limiting flange of the outer circle of each vertical rod 5 is clamped on the limiting flange at the lower part of the inner hole of the adjacent upper vertical rod 5 after the vertical rod 5 moves downwards; when the extension ladder is unfolded, each vertical rod 5 slides downwards until the positioning flange at the upper part of the excircle of each vertical rod contacts the positioning flange at the lower part of the inner hole of the adjacent vertical rod 5; when the extension ladder is accomodate, upwards promote the stay cord 2 of both sides simultaneously with the hand, the montant 5 that the stay cord 2 from the bottom up drove both sides in proper order moves on, and every montant 5 from the bottom up enters into the hole of last montant 5 in proper order, drives each horizontal pole 3 simultaneously and draws in proper order.

As shown in fig. 7 and 8, the cross rod 3 is of a hollow structure, the joint 4 is of an L-shaped structure, one side of the L-shaped joint 4 is a shaft head with a positioning step, the other side of the L-shaped joint 4 is a hollow circular pipe, and the diameter of the lower end of the vertical rod 5 is matched with the diameter of an inner hole of the hollow circular pipe. The lower part of an inner hole of the hollow circular tube is provided with a positioning step, the lower end of the vertical rod 5 is inserted into the hollow circular tube, the end face of the vertical rod is attached to the positioning step at the lower part of the joint 4, and the joint 4 is fixedly connected with the lower end of the vertical rod 5 through a screw connection or a riveting mode; in this embodiment, be provided with 3 connecting holes 9 on the hollow pipe lateral wall that connects 4, set up 3 screw holes in the position that 4 lower extremes of montant be connected with it are corresponding, through 3 connecting screw to connect the lower extreme fixed connection with montant 5, the screw need not bulge in the interior pore wall of montant 5 to interfere with adjacent next montant 5 that cup joints when avoiding contracting.

The diameter of the shaft head of the joint 4 is matched with the diameter of an inner hole at the end part of the cross rod 3, the shaft head of the joint 4 is inserted into the hole at the end part of the cross rod 3, and the joint 4 is fixedly connected with the end part of the cross rod 3 in a screw connection or riveting mode; in this embodiment, two threaded holes 10 are formed in the outer circle of the shaft head of the joint 4, two screw through holes are formed in the outer wall of the cross rod 3 matched with the threaded holes, and the shaft head is inserted into the end hole of the cross rod 3 to be positioned, and then the joint 4 is fixedly connected to the end portion of the cross rod 3 through countersunk screws. The joint 4 comprises a left joint and a right joint which are symmetrical structures, and the joint 4 shown in fig. 7 and 8 is a right joint.

During the use, hang couple 1 of extension ladder upper end earlier on high altitude wire or other supporting bodies, loosen stay cord 2, each unit festival extension ladder lapse, the extension ladder expandes, and constructor carries out the high altitude construction, after the construction, takes off the extension ladder from wire or other supporting bodies, upwards stimulates stay cord 2, and the extension ladder is accomodate.

Claims

1. The utility model provides a high altitude construction hangs extension ladder with carbon fiber, characterized by: the two vertical upright posts are telescopic structures formed by sequentially sleeving a plurality of hollow upright posts (5) with different diameters; two ends of the cross rods (3) are horizontally and fixedly connected to the outer circles of the lower ends of the corresponding vertical rods (5) on two sides through the joints (4); one end of a pull rope (2) is connected to the inner wall of an inner hole of the vertical rod (5) at the lowest end of the left upright column, the pull rope (2) upwards penetrates through the inner hole of the left upright column and then extends out of the upper end of the inner hole of the vertical rod (5) at the highest end, then downwards penetrates through the inner hole of the vertical rod (5) at the highest end of the right upright column, and the other end of the pull rope (2) is connected with the inner wall of the inner hole of the vertical rod (5) at the lowest end of the right upright column; the upper ends of the uppermost vertical rods (5) of the two side vertical columns are provided with hooks (1); the cross rod (3), the vertical rod (5), the hook (1) and the joint (4) are made of carbon fibers.

2. The carbon fiber suspension extension ladder for high altitude construction as claimed in claim 1, wherein: the limiting flange who connects a montant (5) is provided with on the excircle upper portion of montant (5), and the hole lower part of every montant (5) is provided with the limiting flange who connects next montant (5), and montant (5) can slide from top to bottom in adjacent last montant (5), and every montant (5) downstream back excircle upper portion limiting flange card is held on the limiting flange of adjacent last montant (5) hole lower part.

3. The carbon fiber suspension extension ladder for high altitude construction as claimed in claim 1, wherein: the cross rod is of a hollow structure, the joint is of an L-shaped structure, one side of the L-shaped joint is a shaft head with a positioning step, the other side of the L-shaped joint is a hollow circular tube, the diameter of the lower end of the vertical rod is matched with the diameter of an inner hole of the hollow circular tube, the positioning step is arranged on the lower portion of the inner hole of the hollow circular tube, the lower end of the vertical rod is inserted into the hollow circular tube, the end face of the vertical rod is clamped on the positioning step on the lower portion of the joint, and the joint and the lower end of the vertical rod are fixedly connected through screws or in a riveting mode; the diameter of the L-shaped shaft head is matched with the diameter of the inner hole of the end part of the cross rod, the shaft head of the L-shaped joint is inserted into the end part hole of the cross rod, and the joint is fixedly connected with the end part of the cross rod in a screw connection or riveting mode.

4. The carbon fiber suspension extension ladder for high altitude construction as claimed in claim 1, wherein: the middle pedal surface of the cross rod is provided with anti-skid grains.