CN114658347A

CN114658347A - Line operation and maintenance ladder

Info

Publication number: CN114658347A
Application number: CN202210220583.3A
Authority: CN
Inventors: 刘飞; 孙方亮; 高晓策
Original assignee: State Grid Corp of China SGCC; Shijiazhuang Power Supply Co of State Grid Hebei Electric Power Co Ltd; Pingshan Power Supply Co of State Grid Hebei Electric Power Co Ltd
Current assignee: State Grid Corp of China SGCC; Shijiazhuang Power Supply Co of State Grid Hebei Electric Power Co Ltd; Pingshan Power Supply Co of State Grid Hebei Electric Power Co Ltd
Priority date: 2022-03-07
Filing date: 2022-03-07
Publication date: 2022-06-24
Anticipated expiration: 2042-03-07
Also published as: CN114658347B

Abstract

The invention discloses a line operation and maintenance ladder which comprises an outer ladder and an inner ladder, wherein the outer ladder and the outer ladder are semicircular, the axes of the outer ladder and the inner ladder are the same, the diameter of the inner ladder is smaller than that of the outer ladder, the inner ladder is connected to the inner side of the outer ladder in a sliding mode, and the inner ladder moves around the axis of the inner ladder. According to the annular ladder, after the outer ladder and the inner ladder form the annular ladder, the bottom of the outer ladder and the bottom of the inner ladder can form a stable supporting surface firstly, and then the annular ladder can effectively prevent toppling while the outer ladder and the inner ladder do not form a contact position with a telegraph pole after forming the annular ladder; this application is when effectively solving present ladder insecure problem when using, and cable maintenance in-process staff can follow the annular ladder and make the circumference around the wire pole and remove on the wire pole, conveniently carries out the multiposition and detects and need not remove outer ladder and interior ladder.

Description

Line operation and maintenance ladder

Technical Field

The invention belongs to the field of power maintenance equipment, and particularly relates to a line operation maintenance ladder.

Background

Ladder, daily life apparatus, this instrument is by two long thick poles as the limit, and the horizontal pole that is fit for the climbing is crossed in the middle of, is used for climbing the height.

The wire pole is visible everywhere as strutting arrangement in the electric power industry, it needs the maintenance or need carry out the periodic overhaul to the cable to appear damaging at some times to cable support in-process cable at the wire pole, the in-process ladder that overhauls the cable on the wire pole is used widely as common climbing instrument, but unstable condition can appear when the ladder leans on the wire pole, lead to the unable safe operation of overhauing of staff, the insecure condition of ladder appearance generally has the bottom sprag shakiness, ladder upper portion and wire pole contact site easily slide or staff's health remove and drive the ladder and remove, perhaps other circumstances cause the ladder insecure.

The patent with the application number of CN202011352065.4 provides an electric power overhaul ladder, which comprises a main ladder and an auxiliary ladder, wherein an angle adjusting electric cylinder is arranged near the hinge joint of the main ladder and the auxiliary ladder, and the length of the angle adjusting electric cylinder is adjusted through an operator on the main ladder to electrically adjust the angles of the main ladder and the auxiliary ladder; the other end of the auxiliary ladder is provided with a distance adjusting electric cylinder, a fixed cylinder and a movable cylinder of the distance adjusting electric cylinder are respectively provided with a front end clamp and a rear end clamp, the front end clamp is fixed, and the rear end clamp can be opened through a clamp movable block; the tail end of the distance adjusting electric cylinder is fixedly provided with a supporting leg, and the tail end of the supporting leg is provided with an electromagnet; when the device is used, the two clamping devices clamp the telegraph pole to fix the maintenance ladder, so that maintenance personnel can conveniently climb the telegraph pole, and the device can also be erected on an iron vertical surface to fix the auxiliary ladder through the electromagnet so as to conveniently climb the telegraph pole; the advantages are that: the overhaul position that traditional ladder can not reach is obtained through level control and angle modulation, improves the stability of climbing wire pole and iron facade through binding clasp and electro-magnet, improves the security performance. But the application does not solve the problems proposed by the present application.

The patent with the application number of CN201610011668.5 provides a telescopic ladder, wherein a plurality of ladder units with the same structure and gradually changed sizes are sequentially nested in the telescopic ladder along the length direction, and in any two adjacent ladder units, the ladder legs of an upper ladder frame are sleeved in the ladder legs of a lower ladder frame and then are separably connected through locking devices with the same structure; locking means includes locking round pin, locking spring, locking pin cover, shift knob, switch spring and switch box, and the both ends of locking spring are connected with two locking round pins respectively, and the locking round pin level passes the pinhole on last ladder frame and lower ladder frame lateral wall in proper order and stretches out, is equipped with switch spring in the switch box, and switch spring one end is connected to lower ladder frame lateral wall and overlaps the extension at the locking round pin. The telescopic ladder can realize automatic locking and unlocking and has a stable and reliable structure. The problem addressed by the present application still remains in use.

Disclosure of Invention

The invention aims to solve the technical problem of providing a line operation and maintenance ladder to solve the problem that the existing ladder is not firm when in use.

In order to solve the problems, the invention adopts the following technical scheme:

the utility model provides a circuit fortune maintenance ladder, includes outer ladder and inner ladder, and outer ladder are semi-circular, and outer ladder is the same with the inner ladder axis, and the inner ladder diameter is less than outer ladder, and inner ladder sliding connection is inboard at outer ladder, and the inner ladder moves around the inner ladder axis.

Further, at least one arc-shaped rail is arranged between the outer ladder and the inner ladder, the inner side of the arc-shaped rail is fixedly connected with the outer side of the inner ladder, a sliding groove is formed in the outer side of the arc-shaped rail, and a sliding part matched with the sliding groove is arranged on the inner side of the outer ladder.

Furthermore, one end of the sliding chute is provided with a sealing piece.

Further, outer ladder and interior ladder all include flexible stand and semicircle pole, and the quantity of flexible stand is two, and flexible stand includes two at least nested telescopic joint in proper order, sliding fit between the adjacent telescopic joint, and the equal fixed connection in both ends of semicircle pole is on corresponding flexible stand circumference, and the quantity of semicircle pole is two at least, and semicircle pole evenly distributed is between two flexible stands.

Furthermore, a locking device used for limiting the telescopic joint is arranged on the telescopic upright post.

Furthermore, the bottom ends of the outer ladder and the inner ladder are both conical or planar.

Further, the inboard semicircle pole of outer ladder and the inboard semicircle pole of interior ladder all are provided with at least one butt piece, and the butt piece includes bracing piece and butt piece, and bracing piece one end is rotated and is connected on the semicircle pole, and the butt piece is the arc, and the bracing piece is kept away from the one end of semicircle pole and is rotated with the outer cambered surface of butt piece and be connected.

Furthermore, the arc-shaped inner side of the abutting sheet is provided with an elastic cushion layer.

Furthermore, one end of the sealing piece is fixedly connected with a rope body, and one end of the rope body, which is far away from the sealing piece, is fixedly connected with a hook.

Furthermore, a rubber sleeve is arranged on the semicircular rod, and friction grains are arranged on the outer side of the rubber sleeve.

The invention has the following remarkable beneficial effects:

1. the invention relates to a line operation and maintenance overhaul ladder, which comprises an outer ladder and an inner ladder, wherein the outer ladder and the inner ladder are semicircular, the inner ladder is connected to the inner side of the outer ladder in a sliding manner, the axes of the outer ladder and the inner ladder are the same, the diameter of the inner ladder is smaller than that of the outer ladder, the inner side of the outer ladder is opposite to that of the inner ladder by moving the inner ladder around the axes, the outer ladder and the inner ladder form an annular ladder, and a telegraph pole is surrounded inside by the outer ladder and the inner ladder to solve the problem that the existing ladder is infirm; after the outer ladder and the inner ladder form the annular ladder, the bottom of the outer ladder and the bottom of the inner ladder can form a stable supporting surface firstly, and then the annular ladder can effectively prevent the outer ladder and the inner ladder from toppling over while not forming a contact position with a telegraph pole after the outer ladder and the inner ladder form the annular ladder; this application is when effectively solving present ladder insecure problem when using, and cable maintenance in-process staff can follow the annular ladder and make the circumference around the wire pole and remove on the wire pole, conveniently carries out the multiposition and detects and need not remove outer ladder and interior ladder.

2. For the convenience of the inner ladder to move in the outer ladder, the arc-shaped rail is fixedly connected with the inner side and the outer side of the arc-shaped rail, the sliding groove is formed in the outer side of the arc-shaped rail, the sliding part is arranged on the inner side of the outer ladder and matched with the sliding groove, the inner ladder can be effectively supported and guaranteed to move by the aid of the arrangement of the position of the sliding part, and meanwhile, for the convenience of the movement of the inner ladder, the number of the arc-shaped rails is at least one, and the movement of the inner ladder can be facilitated by the aid of the arrangement of the plurality of arc-shaped rails.

3. In order to prevent the inner ladder from sliding at will on the inner side of the outer ladder, one end of the sliding chute is provided with a sealing piece, and the sealing piece seals one end of the sliding chute to limit the movement of the inner ladder, so that the inner ladder is prevented from being separated from the outer ladder in the moving process.

4. In order to realize carrying and use of outer ladder and interior ladder, outer ladder and interior ladder all include flexible stand and the semicircle pole as the connecting rod, and the setting of flexible stand can carry out length direction's shrink to outer ladder and interior ladder, and the setting of semicircle pole can realize the parcel to the wire pole and form stable holding surface.

5. For convenient use and prevent that flexible stand from stretching out and drawing back when using at will, flexible stand includes that two at least telescopic joint and flexible stand are equipped with and are used for adjusting the spacing locking device of telescopic joint, adjusts the restriction to flexible stand through locking device's setting.

6. In order to facilitate the use of the outer ladder and the inner ladder in different geographical environments, the bottom end of the outer body and the bottom end of the inner ladder are both designed to be conical or planar, the conical arrangement can be conveniently inserted into loose soil, and the planar arrangement can be conveniently used on the flat ground.

7. In order to prevent that outer ladder and interior ladder from taking place to rock after surrounding the wire pole including, the semicircle pole inboard of outer ladder and the semicircle pole inboard of interior ladder all are provided with at least one butt piece, and the butt piece is including rotating the bracing piece of connecting on the semicircle pole and rotating the butt piece of connecting at the bracing piece, drives the butt piece through the bracing piece and carries out the butt to the wire pole outer peripheral face and form the support to outer ladder and interior ladder, prevents that outer body and interior ladder from taking place to rock.

8. In order to prevent that outer ladder and interior ladder from rocking too big butt piece that leads to slides, be equipped with the elastic cushion layer in the arc inboard of butt piece, the butt through the elastic cushion layer warp the frictional force between further increase butt piece and the wire pole, reduces the condition that rocks appears in outer ladder and the interior ladder.

9. In order to prevent that the inner ladder still slides after forming the annular ladder, have the rope body of couple at the one end fixedly connected with of sealing member, walk around outer ladder and can form through the couple articulates and bind the effect behind the rope body through the rope body after outer ladder and inner ladder form the annular ladder, prevent that the inner ladder still slides after forming the annular ladder.

10. In order to prevent the worker from slipping when climbing the outer ladder or the inner ladder, the rubber sleeve is arranged on the semicircular rod, and friction lines are arranged on the outer side of the rubber sleeve.

Drawings

Fig. 1 is a schematic structural view of a line operation and maintenance overhaul ladder in an embodiment 1 of the invention;

FIG. 2 is a schematic top view of a line operation and maintenance ladder according to embodiment 1 of the present invention;

FIG. 3 is a schematic sectional view of an arc-shaped track in the line operation and maintenance ladder according to embodiment 1 of the present invention;

FIG. 4 is a schematic structural diagram of a line operation and maintenance service ladder in a top view in a use state according to embodiment 1 of the present invention;

FIG. 5 is a schematic structural diagram of a line operation and maintenance overhaul ladder in an embodiment 2 of the present invention;

FIG. 6 is a schematic top view of a line operation and maintenance ladder according to embodiment 2 of the present invention;

FIG. 7 is a schematic diagram of a partially cut-away structure of a telescopic column in the line operation and maintenance ladder according to embodiment 2 of the present invention;

fig. 8 is a schematic structural view of a line operation and maintenance ladder in a use state in top view in embodiment 3 of the present invention;

fig. 9 is an enlarged schematic structural view of a portion a in fig. 8 of a line operation and maintenance ladder according to embodiment 3 of the present invention.

In the attached drawing, 1-an outer ladder, 2-an inner ladder, 3-an arc track, 4-a chute, 5-a sliding part, 6-a sealing part, 9-a locking device, 10-a supporting rod, 11-a butting piece, 12-a rope body and 13-a hook.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.

Example 1

As shown in fig. 1-4, a line operation and maintenance ladder comprises an outer ladder 1 and an inner ladder 2, wherein the outer ladder 1 and the outer ladder 1 are both semicircular, the axis of the outer ladder 1 is the same as that of the inner ladder 2, the diameter of the inner ladder 2 is smaller than that of the outer ladder 1, the inner ladder 2 is slidably connected to the inner side of the outer ladder 1, and the inner ladder 2 moves around the axis of the inner ladder 2.

Specifically, outer ladder 1 and interior ladder 2 all include two body of rods and many steps on the pole, many step on the pole and be semi-circular and both ends respectively with two body of rod fixed connection formation ladders, the equal fixedly connected with in outer ladder 1 bottom and the 2 bottoms of interior ladder steps on the pole and exist as the support, the diameter of interior ladder 2 is less than outer ladder 1 diameter, outer ladder 1 is the same with interior ladder 2 axis, interior ladder 2 sliding connection is in 1 inboard of outer ladder and around the axis rotation, including can cup joint the wire pole with outer ladder 1 formation closed annular through rotating interior ladder 2.

Form including annular ladder cup joints the wire pole through outer ladder 1 and inner ladder 2, the bottom can form the annular support base after inner ladder 2 and outer ladder 1 form annular ladder, the support base that forms the firm pole through two semicircles of stepping on can prevent effectively that outer ladder 1 from taking place to empty with inner ladder 2, so do not exist the ladder including outer ladder 1 cup joints the wire pole and lean on the wire pole owing to slide and the condition of empting because inner ladder 2, when effectively solving present ladder and having insecure problem when using, the staff can follow the annular ladder of outer ladder 1 and inner ladder 2 formation and carry out the operation around the wire pole, the convenience is overhauld the position that in the past is difficult for touching.

As a further optimization of the invention: be provided with at least one arc track 3 between outer ladder 1 and the

interior ladder

2, 3 inboards of arc track and the 2 outside fixed connection of interior ladder, the arc track 3 outside is provided with spout 4, 1 inboards of outer ladder be provided with the slider 5 of 4 looks adaptations of spout.

It is specific, install an arc track 3 between outer ladder 1 and inner ladder 2, arc track 3 and the same semi-circle of 2 axis of inner ladder, 3 fixed connection in the 2 outsides of inner ladder of arc track, the spout 4 of seting up along 3 length direction of arc track is seted up to one side that inner ladder 2 was kept away from to arc track 3, slider 5 at 1 inboard fixedly connected with of outer ladder and spout 4 looks adaptations, slider 5 is the pulley in this embodiment, the quantity of slider 5 is a plurality of, the inboard evenly distributed of arc of a plurality of sliders 5 edge outer ladder 1, inner ladder 2 removes through mutually supporting of spout 4 and pulley, can conveniently remove inner ladder 2 through the setting to 3 quantity of arc track, make inner ladder 2 form annular ladder with outer ladder 1.

As a further optimization of the invention: a sealing member 6 is provided at one end of the chute 4.

Specifically, a sealing member 6 is fixedly connected to one end of the chute 4, and the sealing member 6 is used for blocking one end of the chute 4, so that the inner ladder 2 moves along one direction, and the inner ladder 2 is prevented from sliding randomly at the inner side of the outer ladder 1, and the inner ladder 2 is prevented from being difficult to use.

Example 2

As shown in fig. 5, 6 and 7, the structure of the present embodiment is substantially the same as that of embodiment 1, and the present embodiment is further optimized based on embodiment 1: outer ladder 1 and interior ladder 2 all include flexible stand and semicircle pole, and the quantity of flexible stand is two, and flexible stand includes two at least nested telescopic joint in proper order, sliding fit between the adjacent telescopic joint, and the equal fixed connection in both ends of semicircle pole is on corresponding flexible stand circumference, and the quantity of semicircle pole is two at least, and semicircle pole evenly distributed is between two flexible stands.

Specifically, the outer ladder 1 and the inner ladder 2 both comprise telescopic vertical columns and semicircular rods, the number of the telescopic vertical columns is two, the telescopic vertical columns comprise telescopic joints which are sequentially nested, the number of the telescopic joints is at least two, the two adjacent telescopic joints are in sliding fit, the semicircular rods are semicircular rod bodies, two ends of each semicircular rod are respectively fixedly connected corresponding to the circumferences of the two corresponding telescopic vertical columns, the semicircular rods are located between the two telescopic vertical columns, and the number of the semicircular rods is at least two and is uniformly and fixedly connected between the two telescopic vertical columns; the arrangement of the telescopic vertical columns can contract the outer ladder 1 and the inner ladder 2 in the length direction, so that the carrying and the use are convenient; it should be noted that all have a semicircle pole to be located 1 bottom of outer ladder and 2 bottoms of inner ladder to provide circular support base after

outer ladder

1 and 2 formation annular ladders of inner ladder for outer ladder 1 in outer ladder 1 and the inner ladder 2.

As a further optimization of the invention: and the telescopic upright post is provided with a locking device 9 for limiting the telescopic joint.

Specifically, in order to use the telescopic upright column conveniently, the outer ladder 1 and the inner ladder 2 are prevented from sliding randomly in the length direction, a locking device 9 used for limiting the telescopic joints is arranged on the telescopic upright column, the locking device 9 is installed between two adjacent telescopic joints, the locking device 9 comprises spring bulges and through holes, the through holes are formed in the upper portions of the telescopic joints located outside, the spring bulges are vertically installed on the lower portions of the outer sides of the telescopic joints located inside, and the through holes are matched with the spring bulges; when needs stretch outer ladder 1 or 2 lengths of internal ladder, when the telescopic joint intercommunication spring that is located inside is protruding to move the through-hole position, the spring is protruding to be out the through-hole under the effect of spring, run through and prevent that inside telescopic joint from reciprocating through the spring arch to the through-hole, when outer ladder 1 or internal ladder 2 need shrink, press the spring arch and make the spring arch leave the through-hole, the telescopic joint that is located inside can freely remove, can accomplish the extension or the shortening of outer ladder 1 and internal ladder 2 through setting up of locking device 9, the convenience is used the wire pole of co-altitude not.

As a further optimization of the invention: the bottom end of the outer ladder 1 and the bottom end of the inner ladder 2 are both conical or plane.

Specifically, for the convenience of placing the outer ladder 1 and the inner ladder 2, the bottom end of the outer ladder 1 and the bottom end of the inner ladder 2 are both conical or planar; the conical arrangement at the bottom end is suitable for uneven or soft ground, and the conical arrangement can be conveniently inserted into the surface layer of the ground, so that the firmness degree is increased; the plane is suitable for leveling the ground, so that the bottom ends of the outer ladder 1 and the inner ladder 2 are prevented from being unstable; in this embodiment, the bottom ends of the outer ladder 1 and the inner ladder 2 are flat.

Example 3

As shown in fig. 8 and 9, the present embodiment has substantially the same structure as embodiment 2, and is further optimized based on embodiment 2: the inboard semicircle pole of outer ladder 1 and the semicircle pole inboard of interior ladder 2 all are provided with at least one butt piece, and the butt piece includes bracing piece 10 and butt piece 11, and 10 one ends of bracing piece are rotated and are connected on the semicircle pole, and butt piece 11 is the arc, and the one end that the semicircle pole was kept away from to bracing piece 10 rotates with 11 outer cambered surfaces of butt piece to be connected.

Specifically, at least one abutting piece is arranged on the inner side of the semicircular rod of the outer ladder 1 and the inner side of the semicircular rod of the inner ladder 2, each abutting piece comprises a support rod 10 and an abutting piece 11, the first end of each support rod 10 is rotatably connected to the semicircular rod, each abutting piece 11 is an arc piece, the other end of each support rod 10 is rotatably connected with the outer arc surface of each abutting piece 11, after the outer ladder 1 and the inner ladder 2 surround the telegraph pole, the peripheral surface of the outer periphery of the telegraph pole can be abutted through moving the support rods 10 and the abutting pieces 11, and the abutting pieces 11 are arc pieces and can be conveniently attached to the outer periphery of the telegraph pole; the setting of butt forms the strong point between outer ladder 1, interior ladder 2 and the wire pole, prevents that outer ladder 1 and interior ladder 2 from taking place to rock, comes to provide firm support to outer ladder 1 and interior ladder 2 through the quantity that increases the butt.

As a further optimization of the invention: the arc-shaped inner side of the abutting sheet 11 is provided with an elastic cushion layer.

Specifically, in order to prevent the situation that the outer ladder 1 and the inner ladder 2 are shaken to cause the abutting sheet 11 to move on the telegraph pole, an elastic cushion layer is arranged on the arc-shaped inner side of the abutting sheet 11, the elastic cushion layer is preferably made of rubber, the abutting force between the abutting sheet 11 and the telegraph pole is increased through the arrangement of the elastic cushion layer, further, the friction force is increased, and the abutting sheet 11 is further prevented from moving on the telegraph pole.

As a further optimization of the invention: one end of the sealing piece 6 is fixedly connected with a rope body 12, and one end of the rope body 12 far away from the sealing piece 6 is fixedly connected with a hook 13.

Specifically, the one end fixedly connected with rope body 12 of sealing member 6, the one end fixedly connected with couple 13 of sealing member 6 is kept away from to rope body 12, when using, interior ladder 2 moves along arc track 3's orbit, including after ladder 2 forms the annular ladder with outer ladder 1 through removing, twine outer ladder 1 and the adjacent flexible stand of interior ladder 2 and hang through couple 13 and fix on rope body 12 through rope body 12, winding and couple 13 through rope body 12 are fixed, with outer ladder 1 and interior ladder 2 fixed connection together, prevent that outer ladder 1 and interior ladder 2 from separating in the use.

As a further optimization of the invention: the semicircular rod is provided with a rubber sleeve, and friction grains are arranged on the outer side of the rubber sleeve.

Specifically, in order to prevent the staff slippage from falling when climbing the semicircle pole, the rubber sleeve is sleeved on the semicircle pole, the rubber sleeve outside is provided with friction lines for increasing friction force, the friction force between the human body and the semicircle pole can be effectively increased through the arrangement of the rubber sleeve and the friction lines, and the slippage falls when the climbing of the semicircle pole is reduced.

At present, the technical scheme of the application has been subjected to a pilot plant test, namely a small-scale experiment before large-scale mass production of products; after the pilot test is finished, the investigation for the use of the user is carried out in a small range, and the investigation result shows that the satisfaction degree of the user is higher; the preparation of products for formal production for industrialization (including intellectual property risk early warning research) has been started.

Claims

1. The utility model provides a circuit operation and maintenance ladder which characterized in that: including outer ladder (1) and inner ladder (2), outer ladder (1) with outer ladder (1) is semi-circular, outer ladder (1) with inner ladder (2) axis is the same, inner ladder (2) diameter is less than outer ladder (1), inner ladder (2) sliding connection be in outer ladder (1) is inboard, inner ladder (2) centers on inner ladder (2) axis removes.

2. The line operation and maintenance ladder of claim 1, wherein: outer ladder (1) with be provided with at least one arc track (3) between interior ladder (2), arc track (3) inboard with interior ladder (2) outside fixed connection, arc track (3) outside is provided with spout (4), outer ladder (1) inboard be provided with slider (5) of spout (4) looks adaptation.

3. The line operation and maintenance ladder of claim 2, wherein: and a sealing piece (6) is arranged at one end of the sliding chute (4).

4. The line operation and maintenance ladder of claim 3, wherein: outer ladder (1) with inner ladder (2) all include flexible stand and semicircle pole, the quantity of flexible stand is two, flexible stand includes two at least nested telescopic joint in proper order, and is adjacent sliding fit between the telescopic joint, the equal fixed connection in both ends of semicircle pole is corresponding on the flexible stand circumference, the quantity of semicircle pole is two at least, semicircle pole evenly distributed is two between the flexible stand.

5. The line operation and maintenance service ladder of claim 4, wherein: and the telescopic upright post is provided with a locking device (9) for limiting the telescopic joint.

6. The line operation and maintenance service ladder of claim 5, wherein: the bottom ends of the outer ladder (1) and the inner ladder (2) are both conical or planar.

7. The line operation and maintenance ladder of claim 6, wherein: the utility model discloses an outer ladder (2) of ladder, including outer ladder (1), the semicircle pole inboard of outer ladder (1) with the semicircle pole inboard of inner ladder (2) all is provided with at least one butt piece, the butt piece includes bracing piece (10) and butt piece (11), bracing piece (10) one end is rotated and is connected on the semicircle pole, butt piece (11) are the arc, bracing piece (10) are kept away from the one end of semicircle pole with butt piece (11) extrados rotates the connection.

8. The line operation and maintenance service ladder of claim 7, wherein: and an elastic cushion layer is arranged on the arc inner side of the abutting sheet (11).

9. The line operation and maintenance service ladder of claim 8, wherein: one end fixedly connected with rope body (12) of sealing member (6), rope body (12) are kept away from one end fixedly connected with couple (13) of sealing member (6).

10. The line operation and maintenance service ladder of claim 9, wherein: the semicircular rod is provided with a rubber sleeve, and friction grains are arranged on the outer side of the rubber sleeve.