CN205178392U - Rope ladder head for live working - Google Patents

Rope ladder head for live working Download PDF

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Publication number
CN205178392U
CN205178392U CN201521056438.8U CN201521056438U CN205178392U CN 205178392 U CN205178392 U CN 205178392U CN 201521056438 U CN201521056438 U CN 201521056438U CN 205178392 U CN205178392 U CN 205178392U
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CN
China
Prior art keywords
rope ladder
member
described
driven member
longitudinal
Prior art date
Application number
CN201521056438.8U
Other languages
Chinese (zh)
Inventor
肖荣贵
严成
陈虎
Original Assignee
国家电网公司
国网湖南省电力公司
国网湖南省电力公司娄底供电分公司
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Publication date
Application filed by 国家电网公司, 国网湖南省电力公司, 国网湖南省电力公司娄底供电分公司 filed Critical 国家电网公司
Priority to CN201521056438.8U priority Critical patent/CN205178392U/en
Application granted granted Critical
Publication of CN205178392U publication Critical patent/CN205178392U/en

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Abstract

The utility model discloses a rope ladder head for live working, including the rope ladder headstock, promote the component, walk line pulley and safeties, the rope ladder headstock includes vertical stand of two parallel arrangement and connects the horizontal pole between vertical stand, the top of two vertical stands is the U type section that open side down, walk line pulley mounting in U type section, safeties includes the fixed loop, the supporting member, driving member and driven member, the fixed loop is fixed in on vertical stand, the supporting member is fixed in the fixed loop outer wall, the bottom of driven member is articulated with the supporting member, promote that the component is mobilizable to be connected on vertical stand, be located the below of fixed loop, the bottom of driving member articulates on promoting the component, the top is articulated with the top of driven member, the top of driven member is stretched into in the U type section opening, be provided with the spring on vertical stand between promotion component and the fixed loop, the control driven member is opened, close the opening of U type section, realize the voluntary insurance, the operation efficiency is improved, the safe hidden trouble is eliminated.

Description

Live line working rope ladder head

Technical field

The utility model relates to a kind of instrument carrying out Equipotential live working, particularly relates to a kind of live line working rope ladder head.

Background technology

Insulated flexible ladder is a kind of instrument that Equipotential live working is conventional, and it is connected with the rope ladder head of wire by metal material.During use, be connected by insulated flexible ladder with metal rope ladder head lower end, rope ladder head lifts by crane and is suspended on wire by recycling insulation insulated sling, and equipotential personnel climb rope ladder can carry out Equipotential live working.Metal rope ladder head also has the effect of carrying equipotential person weight simultaneously.What the connected mode of metal rope ladder head and wire adopted is pulley hook, and when operation, equipotential personnel can slide onto wire rejected region easily and carry out service work, flexible operation, easy to use.But through using discovery for many years, rope ladder head is connected with wire and there is certain unsafe factor, is mainly reflected in following side:

1, the slip-off preventing of rope ladder head and wire is insured needs equipotential personnel to climb ability manual closing on wire, and when equal potential working personnel climb rope ladder, safeties are in open mode, there is the potential safety hazard of falling from high altitude.

2, safeties closed employing be hung and buckled connected mode, simple being buckled by circular arc safeties carries out closed insurance on stove bolt, when equipotential personnel stand in and rope ladder head work, just may make it to come off due to touching safeties, thus make manned metal rope ladder head be in non-safety position.

3, after equipotential work completes, need equal potential working personnel to open insurance and could extract rope ladder, but often occur in practice that equal potential working personnel carelessness is forgotten insurance is opened, cause rope ladder just cannot remove, operating personnel is needed again to carry out equipotential, could remove rope ladder after insurance being opened, the convenience of use is bad, often increases unnecessary labour intensity and operating risk.

In order to solve the problem, my unit has carried out different tests, successively manufactures and designs gravity self-locking formula safeties, magnetic self-locking safeties and external spring safeties on rope ladder head, but these three kinds of devices all exist certain defect.

Although gravity self-locking formula safeties solve rope ladder head uninsured difficult problem when climbing rope ladder, but due to the diversity of live line working, equipotential personnel sometimes directly ride on and work on wire after equipotential, at this moment in order to ensure the insurance of rope ladder head, still need original manual safety device, add the operating procedure of live line working.

Magnetic self-locking safeties are because magnetic picture is concerning less tractive effort and software gravity, and because of the restriction of rope ladder head physical dimension, the mode be difficult to by amplifying increases magnetic force, and magnet can processing type not as metal, be difficult to realization in this way.

Adopt the mode of external spring, in order to avoid increasing the physical dimension of rope ladder head, the spring diameter of employing is less, and elastic force is inadequate, does not reach the requirement needed for work.

According to the deficiency of the problems referred to above and test products, we devise a kind of rope ladder head with self-protective device newly.

Utility model content

The purpose of this utility model is to provide a kind of live line working rope ladder head with safeties, and safeties can be opened automatically, closed.

The utility model discloses a kind of live line working rope ladder head, comprise rope ladder headstock, lifting member, cabling pulley and safeties, rope ladder headstock comprises two longitudinal columns be arranged in parallel and the cross bar be connected between longitudinal column, the top of two longitudinal columns is U-shaped section that Open Side Down, bottom is column type section, the bottom of cabling pulley is higher than the openend of U-shaped section, cabling pulley is installed in U-shaped section, described safeties comprise retainer ring, supporting member, driving member and driven member, retainer ring is fixed on longitudinal column, supporting member is fixed on retainer ring outer wall, bottom and the supporting member of driven member are hinged, lifting member is mobilizable to be connected on longitudinal column, be positioned at the below of retainer ring, the bottom of driving member is articulated with in lifting member, the top of top and driven member is hinged, the top of driven member is stretched in U-shaped section of opening, longitudinal column between lifting member and retainer ring is provided with spring, control driven member is opened, close the opening of U-shaped section.

As preferably, described lifting member comprises the power transmission arm-tie of square type and is installed on the suspension ring at its center, and the two ends of power transmission arm-tie length direction are set with on two described longitudinal columns, and the region outside the corresponding longitudinal column in power transmission arm-tie two ends is provided with hinged seat.

As preferably, described safeties have two covers, are installed on two longitudinal columns respectively, and two cover safeties are connected by described lifting member.

As preferably, described supporting member, driving member and driven member are rod member, the bottom of driving member is articulated with on described hinged seat, supporting member and driven member have inside and outside two that are arranged symmetrically with about described retainer ring respectively, driven member and the driving member in outside are hinged, two driven members are connected as a single entity by the arc being arranged at top, and the gap between two driven member tops closed by arc parcel.

As preferably, be S type changeover portion between U-shaped section of described longitudinal column and column type section, the longitudinal center line of column type section vertically divides the longitudinal center line of described cabling pulley equally.

As preferably, the disconnected side end of described U-shaped section of openend is outward-dipping inclined-plane.

As preferably, the bottom of described column type section is the link of mounting insulated flexible ladder.

As preferably, U-shaped section of reversed arrangement on described two longitudinal columns.

As preferably, the maximum elastic force of described spring is 49N.

As preferably, the material of described safeties is aluminium alloy.

When the utility model uses, the coaster of insulated sling hangs on wire by equipotential personnel, and insulated sling is connected with suspension ring by ground staff, connects rope ladder simultaneously.Ground staff is by insulated sling by rope ladder and rope ladder head lifting, and under the effect of the pulling force of insulated sling and the deadweight both direction counter force of rope ladder, spring is in state compression, makes driving member drive driven member to move the opening opening U-shaped section; Rope ladder head hangs over after on wire, unclamps insulated sling, and the load of rope ladder is transferred on wire, recoil of spring, and driving member drives the opening of closed U-shaped section of driven member motion, realizes voluntary insurance.

This rope ladder head realizes by the compression of spring, resilience that driven member is opened, the opening of closed U-shaped section, realizes voluntary insurance.

Accompanying drawing explanation

Fig. 1 is the schematic front view of the utility model embodiment.

Fig. 2 is the schematic side view of embodiment in Fig. 1.

Embodiment

As shown in Figure 1 and Figure 2, present embodiment discloses a kind of live line working rope ladder head.This rope ladder head comprises: rope ladder headstock 1, lifting member 2, spring 3, cabling pulley 4 and safeties 5, the mobilizable below being connected to rope ladder headstock 1, being positioned at safeties 5 of lifting member 2, it is spring 3 between lifting member 2 and safeties 5, under spring nature, safeties 5 are closed.

Wherein rope ladder headstock 1 comprises two longitudinal columns be arranged in parallel 11 and two cross bars 12 be arranged between two longitudinal columns 11, longitudinal column 11 is followed successively by U-shaped section 111 from top to bottom, S type changeover portion 112 and column type section 113, the longitudinal center line of column type section 113 vertically divides the longitudinal center line of cabling pulley 4 equally, the bottom of column type section is provided with link 114, and the opening of U-shaped section 111 is that wire snaps in mouth.

Lifting member 2 comprises the power transmission arm-tie 21 of square type and is installed on the suspension ring 22 at its center, and power transmission arm-tie 21 two ends are provided with hinged seat 23, and two longitudinal columns 11 are through power transmission arm-tie 21.

Safeties 5 have two covers be connected on two longitudinal columns 11, often overlap safeties 5 and include retainer ring 51, supporting member 52, driving member 53, driven member 54 and arc 55, supporting member 52 and driven member 53 have inside and outside two that are arranged symmetrically with about retainer ring 51 respectively, two driven members 53 are connected as a single entity by the arc 55 on top, and arc 55 wraps up the top that envelope two closes driven member 53; Retainer ring 51 is fixed on longitudinal column 11, supporting member 52 is fixed on retainer ring 51 outer wall, the bottom of the driven member 54 in outside and supporting member 52 is hinged, the top of top and driving member 53 is hinged, the bottom of driving member 53 is articulated with on the hinged seat 23 of power transmission arm-tie 21.

When the utility model uses, first insulated sling is walked around wire by equipotential personnel, then by ground staff, insulated sling is connected with suspension ring, and rope ladder is connected to rope ladder head bottom, after connection, rope ladder and rope ladder head are lifted by crane by insulated sling by ground staff, in lifting process, spring is by the pulling force of insulated sling and the deadweight of rope ladder, the direction of two active forces is contrary, and spring stress compresses, and driving member drives driven member motion, make the wire of U-shaped section snap in mouth to open, realize automatically opening wire and snap in mouth; Rope ladder head hangs over after on wire, unclamps insulated sling, and the deadweight of rope ladder is transferred on wire, recoil of spring, and driving member drives the wire of closed U-shaped section of driven member motion to snap in mouth, realizes voluntary insurance.

So the utility model is realized by the compression of spring, resilience, driven member is opened, the wire of closed U-shaped section snaps in mouth, realizes voluntary insurance, reduces flow chart, increase work efficiency, eliminate safe hidden trouble.

Meanwhile, in order to ensure result of use, maximum elastic force is selected to be the spring of 49N, the material selection aluminium alloy of safeties.

Snapping in and shifting out for the ease of wire, the end of the U-shaped section of disconnected side of openend is set to outward-dipping inclined-plane.

In order to strengthen the reliability that the utility model and wire mount, U-shaped section of reversed arrangement on two longitudinal columns.

Claims (10)

1. a live line working rope ladder head, comprise rope ladder headstock, lifting member, cabling pulley and safeties, rope ladder headstock comprises two longitudinal columns be arranged in parallel and the cross bar be connected between longitudinal column, the top of two longitudinal columns is U-shaped section that Open Side Down, bottom is column type section, the bottom of cabling pulley is higher than the openend of U-shaped section, cabling pulley is installed in U-shaped section, it is characterized in that: described safeties comprise retainer ring, supporting member, driving member and driven member, retainer ring is fixed on longitudinal column, supporting member is fixed on retainer ring outer wall, bottom and the supporting member of driven member are hinged, lifting member is mobilizable to be connected on longitudinal column, be positioned at the below of retainer ring, the bottom of driving member is articulated with in lifting member, the top of top and driven member is hinged, the top of driven member is stretched in U-shaped section of opening, longitudinal column between lifting member and retainer ring is provided with spring, control driven member is opened, close the opening of U-shaped section.
2. live line working rope ladder head according to claim 1, it is characterized in that: described lifting member comprises the power transmission arm-tie of square type and is installed on the suspension ring at its center, the two ends of power transmission arm-tie length direction are set with on two described longitudinal columns, and the region outside the corresponding longitudinal column in power transmission arm-tie two ends is provided with hinged seat.
3. live line working rope ladder head according to claim 1, is characterized in that: described safeties have two covers, is installed on two longitudinal columns respectively, and two cover safeties are connected by described lifting member.
4. live line working rope ladder head according to claim 2, it is characterized in that: described supporting member, driving member and driven member are rod member, the bottom of driving member is articulated with on described hinged seat, supporting member and driven member have inside and outside two that are arranged symmetrically with about described retainer ring respectively, driven member and the driving member in outside are hinged, two driven members are connected as a single entity by the arc being arranged at top, and the gap between two driven member tops closed by arc parcel.
5. live line working rope ladder head according to claim 1, is characterized in that: be S type changeover portion between U-shaped section of described longitudinal column and column type section, the longitudinal center line of column type section vertically divides the longitudinal center line of described cabling pulley equally.
6. live line working rope ladder head according to claim 1, is characterized in that: the disconnected side end of described U-shaped section of openend is outward-dipping inclined-plane.
7. live line working rope ladder head according to claim 1, is characterized in that: the bottom of described column type section is the link of mounting insulated flexible ladder.
8. live line working rope ladder head according to claim 1, is characterized in that: U-shaped section of reversed arrangement on described two longitudinal columns.
9. live line working rope ladder head according to claim 1, is characterized in that: the maximum elastic force of described spring is 49N.
10. live line working rope ladder head according to claim 1, is characterized in that: the material of described safeties is aluminium alloy.
CN201521056438.8U 2015-12-17 2015-12-17 Rope ladder head for live working CN205178392U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201521056438.8U CN205178392U (en) 2015-12-17 2015-12-17 Rope ladder head for live working

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201521056438.8U CN205178392U (en) 2015-12-17 2015-12-17 Rope ladder head for live working

Publications (1)

Publication Number Publication Date
CN205178392U true CN205178392U (en) 2016-04-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201521056438.8U CN205178392U (en) 2015-12-17 2015-12-17 Rope ladder head for live working

Country Status (1)

Country Link
CN (1) CN205178392U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105429046A (en) * 2015-12-17 2016-03-23 国家电网公司 Rope ladder head used for equipotential live working and application method therefor
CN106337652A (en) * 2016-09-20 2017-01-18 国家电网公司 Electric power maintenance ladder
CN107652678A (en) * 2017-09-05 2018-02-02 国网山东省电力公司临沂供电公司 A kind of insulating ladder available for livewire work

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105429046A (en) * 2015-12-17 2016-03-23 国家电网公司 Rope ladder head used for equipotential live working and application method therefor
CN106337652A (en) * 2016-09-20 2017-01-18 国家电网公司 Electric power maintenance ladder
CN107652678A (en) * 2017-09-05 2018-02-02 国网山东省电力公司临沂供电公司 A kind of insulating ladder available for livewire work

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