CN208845092U - A kind of Multi-section telescopic ladder - Google Patents

Abstract

The utility model discloses a kind of Multi-section telescopic ladders, it is related to electric power overhaul technical field, the utility model includes symmetrically arranged two terraced side columns, the ladder side column is arranged by the hollow hollow sleeve of more piece, the caliber of the hollow sleeve gradually successively decreases from the bottom up, the hollow sleeve upper end is arranged with interconnecting piece, hollow transverse supporting rod is provided with by interconnecting piece between the identical hollow sleeve of caliber two-by-two on the ladder side column, locking assembly is provided between the transverse supporting rod both ends and interconnecting piece, short circuit grounding component is provided on the ladder side column, the ladder side column lower end is provided with support base, the support base lower end is provided with sucker, the utility model has structure simple, it can be used for the livewire work of high electric field environment, the advantages of good antiskid effect.

Description

A kind of Multi-section telescopic ladder

Technical field

The utility model relates to electric power overhaul technical fields, more particularly to a kind of Multi-section telescopic ladder.

Background technique

Currently, electric power overhaul operator is under the high electric field environment such as substation when site operation, it is sometimes necessary to ascend a height Operation needs to be generally the conductions such as aluminium alloy using the material to extension ladder, existing extension ladder during ascending a height operation Material, and operator generally requires livewire work in practical work process, it again cannot be with high pressure in carrying, use process Charging equipment keeps effective safe distance, is easy to cause operating personnel's electric shock death by accident.

In addition, in use, for the ground of certain smoothers, the friction of extension ladder and ground touching generation Power is smaller, and extension ladder is easy sliding, and operator throws from extension ladder and causes safety accident.

Therefore, it designs a kind of with grounding function, the extension ladder of good antiskid effect, for avoiding operator actual It gets an electric shock in the electric power overhaul course of work or is thrown from extension ladder because extension ladder slides and cause safety accident, improve electric power inspection Operator is repaired on extension ladder with the safety of electro ultrafiltration, there is positive effect.

Utility model content

The purpose of this utility model is that: electric shock, the problem of antiskid effect difference, sheet are easily led in order to solve existing extension ladder Utility model provides a kind of Multi-section telescopic ladder with grounding function and good antiskid effect.

The utility model specifically uses a kind of following technical scheme: Multi-section telescopic ladder to achieve the goals above, including right Claim two terraced side columns of setting, the ladder side column is arranged by the hollow hollow sleeve of more piece, the caliber of the hollow sleeve Gradually successively decrease from the bottom up, the hollow sleeve upper end is arranged with interconnecting piece, and caliber is identical hollow two-by-two on the ladder side column Hollow transverse supporting rod is provided between casing by interconnecting piece, after extension ladder expansion, transverse supporting rod is used to support operator Member stands, and locking assembly is provided between the transverse supporting rod both ends and interconnecting piece, locking assembly is for locking extension ladder expansion Upper section hollow sleeve and next section hollow sleeve afterwards, after locking assembly unlock, because the caliber of hollow sleeve is from the bottom up Gradually successively decreasing, all hollow sleeves are stowed in nethermost section hollow sleeve, and it is convenient for collecting to take, save extension ladder not The area occupied when use is provided with short circuit grounding component on the ladder side column, and short circuit grounding component is for extension ladder Ground connection, so that operator is in high electric field environment when livewire work, ladder side column lower end setting safer using extension ladder There is support base, the support base lower end is provided with sucker, and it is stronger that the setting of sucker can allow extension ladder to be grabbed, and avoids extension ladder It is slided on ground, to avoid operator because extension ladder slides the safety accident thrown from extension ladder.

Further, the short circuit grounding component includes winding box, and the winding box is arranged in hollow sleeve side, take-up Box can be connected by being bonded or welding with hollow sleeve, can also be detachably connected by bolt and hollow sleeve, described Reel is provided in winding box, described reel one end is rotatably connected on hollow sleeve, and the other end is provided with handle, described Handle stretches out outside winding box, and the reel winding is provided with short-circuit line, and the scaling of short-circuit line may be implemented in rotational handle, with suitable Different usage scenarios is answered, described short-circuit line one end and hollow sleeve electrical connection, the other end are pierced by winding box and are provided with brill ground nail, Ground nail is bored for short-circuit line to be fixed on the ground, so that earthing effect is more preferable.

Further, the transverse supporting rod upper end is symmetrically arranged with a pair of of recessed portion, the shape of recessed portion can with it is general The shoes of operator match, and recessed portion is used to support the foot of operator, on the one hand make operator stand more steady, are convenient for Operator station operates on extension ladder, on the other hand can be anti-skidding, avoids the foot of operator from sliding on transverse supporting rod, makes Operator throws and injured from extension ladder.

Further, the transverse supporting rod lower end is provided with and the one-to-one lug boss of the recessed portion, the protrusion The size and recessed portion in portion match, and when packing up extension ladder, lug boss and recessed portion are combined, and the setting of lug boss can make It is more firm to obtain structure of telescopic ladder.

Further, the locking assembly includes the pin A being horizontally placed on inside transverse supporting rod, on the hollow sleeve End and lower end offer the through-hole that the head pin A may pass through, and the through hole that the interconnecting piece corresponds to hollow sleeve upper end is also opened Equipped with the through-hole that the head pin A may pass through, when the through-hole of hollow sleeve upper end and the upper section hollow sleeve of the section hollow sleeve Lower end through-hole alignment after, the head of pin A can be sequentially passed through from the through-hole of interconnecting piece hollow sleeve upper end through-hole and The through-hole of the upper section hollow sleeve lower end of the section hollow sleeve, realizes locking, and pin A is exited from the through-hole of hollow sleeve lower end Afterwards, unlock can be realized, the two sides up and down inside the transverse supporting rod are provided with sliding slot, are provided with and slide in the middle part of the pin A The annulus lug boss A that slot matches, is provided with spring A, the transverse supporting rod lower end between the annulus lug boss A and interconnecting piece Be provided with limiting slot A, the end the pin A be provided with can in limiting slot A movable poke rod A, specifically, there are two types of use Method, the first is to drive pin A mobile toward the direction far from hollow sleeve with hand-motion poke rod A, poke rod A, and spring A is drawn It stretches, all hollow sleeves is extracted out, decontrol poke rod A, driven in the elastic force of spring A, pin A is transported toward hollow sleeve direction Dynamic, the head of pin A passes through three through-holes, blocks hollow sleeve, realizes locking, that is, extension ladder, second of user can be used Method is to pull hollow sleeve when needing using extension ladder, when the through-hole of hollow sleeve upper end and a upper section for the section hollow sleeve After the through-hole alignment of hollow sleeve lower end, the head of pin A is squeezed into through-hole under the action of spring A, blocks through-hole, is realized Locking can be used.When needing to pack up extension ladder, drive pin A toward far from hollow sleeve with hand-motion poke rod A, poke rod A Direction it is mobile, pin A is exited from the through-hole of hollow sleeve lower end, and hollow sleeve can be packed up successively, can keep extension ladder well.

Further, the locking assembly includes the pin B being horizontally placed on inside transverse supporting rod, on the hollow sleeve End and lower end offer the through-hole that the head pin B may pass through, and the through hole that the interconnecting piece corresponds to hollow sleeve upper end is also opened Equipped with the through-hole that the head pin B may pass through, when the through-hole of hollow sleeve upper end and the upper section hollow sleeve of the section hollow sleeve Lower end through-hole alignment after, the head of pin B can be sequentially passed through from the through-hole of interconnecting piece hollow sleeve upper end through-hole and The through-hole of the upper section hollow sleeve lower end of the section hollow sleeve realizes locking, is provided with annulus lug boss in the middle part of the pin B B, is provided with spring B between the annulus lug boss B and interconnecting piece, the transverse supporting rod inside is provided with guiding in two sides up and down Slot, the pin tail portion is provided with can be provided with support in the slide bar of guide groove sliding, the transverse supporting rod, on the support Horizontally disposed to have electromagnet, the slide bar material is iron or cobalt or nickel, specifically, there are two types of application methods, the first is electromagnetism Tie Tong electricity, electromagnet attract slide bar, and slide bar drives pin B mobile toward the direction far from hollow sleeve, and spring B stretches, all Hollow sleeve extraction, electromagnet power-off, electromagnet disappears to the attraction of slide bar, drives in the elastic force of spring B, pin B is past The head of the movement of hollow sleeve direction, pin B passes through three through-holes, blocks hollow sleeve, realizes locking, that is, can be used flexible Ladder, second of application method is to pull hollow sleeve when needing using extension ladder, when in the through-hole and the section of hollow sleeve upper end After the through-hole alignment of the upper section hollow sleeve lower end of empty set pipe, through-hole is squeezed under the action of spring B in the head of pin B It is interior, through-hole is blocked, locking is realized, that is, can be used.When needing to pack up extension ladder, electromagnet is powered, and electromagnet attracts slide bar, slide bar Drive pin B mobile toward the direction far from hollow sleeve, pin B is exited from the through-hole of hollow sleeve lower end, hollow sleeve It successively packs up, extension ladder can be kept well.

Further, the locking assembly includes the pin C being horizontally placed on inside transverse supporting rod, on the hollow sleeve End and lower end offer the through-hole that the head pin C may pass through, and the through hole that the interconnecting piece corresponds to hollow sleeve upper end is also opened Equipped with the through-hole that the head pin C may pass through, when the through-hole of hollow sleeve upper end and the upper section hollow sleeve of the section hollow sleeve Lower end through-hole alignment after, the head of pin C can be sequentially passed through from the through-hole of interconnecting piece hollow sleeve upper end through-hole and The through-hole of the upper section hollow sleeve lower end of the section hollow sleeve realizes locking, and the transverse supporting rod lower end is provided with limiting slot The tail portion B, the pin C, which is provided with, to be provided with partition in movable poke rod B, the interior middle part of the transverse supporting rod in limiting slot B, Spring C is provided between the partition and poke rod B, specifically, the first is with hand-motion poke rod there are two types of application method B drives pin C mobile toward the direction far from hollow sleeve, and spring C compression extracts all hollow sleeves out, decontrols poke rod B, in the case where the elastic force of spring C drives, pin B is moved toward hollow sleeve direction, and the head of pin C passes through three through-holes, is blocked Empty set pipe realizes locking, that is, extension ladder can be used, and second of application method is to pull hollow sleeve when needing using extension ladder, After the through-hole alignment of the upper section hollow sleeve lower end of the through-hole and section hollow sleeve of hollow sleeve upper end, pin C's Head is squeezed into through-hole under the action of spring C, blocks through-hole, is realized locking, that is, be can be used.When needing to pack up extension ladder, use Hand-motion poke rod B drives pin C mobile toward the direction far from hollow sleeve, spring C compression, and pin C is from hollow sleeve lower end Through-hole exit, hollow sleeve can be packed up successively, can keep extension ladder well.

The beneficial effects of the utility model are as follows:

1, the utility model structure is simple, is provided with the short circuit grounding component for extension ladder ground connection, avoids operator Because electric shock causes safety accident when livewire work, extension ladder bottom is provided with sucker, so that extension ladder is grabbed in use Ground is more firm, avoids operator during using extension ladder because extension ladder slides throw from extension ladder on the ground It is injured；

2, the short circuit grounding component of the utility model includes winding box, and the length of adjustable short-circuit line is different to adapt to Usage scenario, the setting for boring ground nail can make earthing effect more preferable；

3, the transverse supporting rod of the utility model is used to support the foot of operator, a side by setting recessed portion, recessed portion Face makes operator stand more steady, operates on extension ladder convenient for operator station, on the other hand can be anti-skidding, avoids operating The foot of personnel slides on transverse supporting rod, so that operator throws and injured from extension ladder；

4, the locking assembly of the utility model includes pin A, when needing using extension ladder, with hand-motion poke rod, is stirred Bar drives pin A mobile toward the direction far from hollow sleeve, and spring A is stretched, and all hollow sleeves are extracted out, and relieving is stirred Bar drives in the elastic force of spring A, and pin A is moved toward hollow sleeve direction, and the head of pin A passes through three through-holes, blocks hollow Casing realizes locking, that is, extension ladder can be used, and when needing to pack up extension ladder, with hand-motion poke rod, poke rod drives pin A Mobile toward the direction far from hollow sleeve, pin A is exited from the through-hole of hollow sleeve lower end, and hollow sleeve can be packed up successively, Extension ladder can be kept well；

5, the locking assembly of the utility model includes pin B, and when needing using extension ladder, electromagnet is powered, and electromagnet is inhaled Drawing slide bar, slide bar drives pin B mobile toward the direction far from hollow sleeve, and spring B stretches, all hollow sleeves are extracted out, Electromagnet power-off, electromagnet disappear to the attraction of slide bar, drive in the elastic force of spring B, pin B is transported toward hollow sleeve direction Dynamic, the head of pin B passes through three through-holes, blocks hollow sleeve, realizes locking, that is, extension ladder can be used, pass through electromagnet Setting, may be implemented the automatic unlocking of locking assembly, saves human cost；

6, the locking assembly of the utility model includes pin C, with hand-motion poke rod B, drives pin C toward far from hollow sleeve The direction of pipe is mobile, and spring C compression extracts all hollow sleeves out, decontrols poke rod B, in the case where the elastic force of spring C drives, Pin B is moved toward hollow sleeve direction, and the head of pin C passes through three through-holes, blocks hollow sleeve, is realized locking, can be made Use extension ladder.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the structural schematic diagram of the utility model embodiment 2；

Fig. 3 is the structural schematic diagram of the utility model embodiment 3；

Fig. 4 is the structural schematic diagram of the utility model embodiment 4；

Fig. 5 is the structural schematic diagram of the utility model embodiment 5；

Fig. 6 is the structural schematic diagram of the utility model embodiment 6；

Appended drawing reference: 1- transverse supporting rod, 2- interconnecting piece, 3- ladder side column, 4- short circuit grounding component, 5- support base, 6- sucker, 7- hollow sleeve, 8- winding box, 9- handle, 10- short-circuit line, 11- brill ground nail, 12- reel, 13- recessed portion, 14- lug boss, 15- spring A, 16- annulus lug boss A, 17- pin A, 18- poke rod A, 19- limiting slot A, 20- sliding slot, 21- guide groove, 22- Slide bar, 23- support, 24- electromagnet, 25- spring B, 26- annulus lug boss B, 27- pin B, 28- pin C, 29- limiting slot B, 30- poke rod B, 31- spring C, 32- partition.

Specific embodiment

It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.

Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all Belong to the range of the utility model protection.

It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.In addition, term " the One ", " second " etc. is only used for distinguishing description, is not understood to indicate or imply relative importance.

In the description of the utility model embodiment, it should be noted that the instructions such as term "inner", "outside", "upper" Orientation or positional relationship is to be based on the orientation or positional relationship shown in the drawings or when utility model product use usually puts The orientation or positional relationship put, is merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion is signified Device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this is practical Novel limitation.

Embodiment 1

As shown in Figure 1, the present embodiment provides a kind of Multi-section telescopic ladder, including symmetrically arranged two terraced side columns 3, the ladder Side column 3 is arranged by the hollow hollow sleeve 7 of more piece, and the caliber of the hollow sleeve 7 gradually successively decreases from the bottom up, it is described in 7 upper end of empty set pipe is arranged with interconnecting piece 2, passes through interconnecting piece 2 between the identical hollow sleeve 7 of caliber two-by-two on the ladder side column 3 It is provided with hollow transverse supporting rod 1, after extension ladder expansion, transverse supporting rod 1 is used to support operator's standing, the horizontal support Locking assembly is provided between 1 both ends of bar and interconnecting piece 2, locking assembly is used to lock the upper section hollow sleeve after extension ladder expansion Pipe 7 and next section hollow sleeve 7 after locking assembly unlock, because the caliber of hollow sleeve 7 gradually successively decreases from the bottom up, own Hollow sleeve 7 is stowed in nethermost section hollow sleeve 7, convenient for collecting to take, when saving extension ladder does not use The area of occupancy is provided with short circuit grounding component 4 on the ladder side column 3, and short circuit grounding component 4 is used for the ground connection of extension ladder, makes Operator is obtained in high electric field environment when livewire work, safer using extension ladder, 3 lower end of the ladder side column is provided with support Seat 5,5 lower end of support base is provided with sucker 6, and it is stronger that the setting of sucker 6 can allow extension ladder to be grabbed, and extension ladder is avoided to exist Ground sliding, to avoid operator because extension ladder slides the safety accident thrown from extension ladder.

Embodiment 2

As shown in Fig. 2, the present embodiment is further improved on the basis of embodiment 1, the specially described short circuit grounding Component 4 includes winding box 8, and in 7 side of hollow sleeve, winding box 8 can by bolt and hollow sleeve 7 for the setting of winding box 8 Dismantling connection is provided with reel 12 in the winding box 8, and described 12 one end of reel is rotatably connected on hollow sleeve 7, separately One end is provided with handle 9, and the handle 9 stretches out outside winding box 8, and the winding of reel 12 is provided with short-circuit line 10, rotates hand The scaling of short-circuit line 10 may be implemented in handle 9, to adapt to different usage scenarios, 7 electricity of described 10 one end of short-circuit line and hollow sleeve Connection, the other end are pierced by winding box 8 and are provided with brill ground nail 11, bore ground nail 11 for short-circuit line 10 to be fixed on the ground, so that Earthing effect is more preferable.

Embodiment 3

As shown in figure 3, the present embodiment is further improved on the basis of embodiment 2, the specially described transverse supporting rod 1 Upper end is symmetrically arranged with a pair of of recessed portion 13, and the shape of recessed portion 13 and the shoes of general operation personnel match, and recessed portion 13 is used In the foot of support operator, operator is on the one hand made to stand more steady, is operated on extension ladder convenient for operator station, separately On the one hand can be anti-skidding, avoid the foot of operator from sliding on transverse supporting rod so that operator from extension ladder throw and by Wound.

Preferably, 1 lower end of transverse supporting rod be provided with the one-to-one lug boss 14 of the recessed portion 13, it is described convex The size and recessed portion 13 for playing portion 14 match, and when packing up extension ladder, lug boss 14 and recessed portion 13 are combined, lug boss 14 Setting structure of telescopic ladder can be made more firm.

Embodiment 4

As shown in figure 4, the present embodiment is further improved on the basis of embodiment 1, the specially described locking assembly Including the pin A 17 being horizontally placed on inside transverse supporting rod 1,7 top and bottom of hollow sleeve offer pin A 17 The through-hole that head may pass through, the through hole of corresponding 7 upper end of hollow sleeve of the interconnecting piece 2, which also offers 17 head pin A, to wear The through-hole crossed, when the through-hole of upper 7 lower end of section hollow sleeve of the through-hole and section hollow sleeve 7 of 7 upper end of hollow sleeve is aligned Later, the head of pin A 17 can sequentially pass through the through-hole and the section hollow sleeve of 7 upper end of hollow sleeve from the through-hole of interconnecting piece 2 The through-hole of upper 7 lower end of section hollow sleeve of pipe 7, after realizing that locking, pin A 17 are exited from the through-hole of 7 lower end of hollow sleeve, Unlock can be realized, the two sides up and down inside the transverse supporting rod 1 are provided with sliding slot 20, be provided in the middle part of the pin A 17 and The annulus lug boss A 16 that sliding slot 20 matches, annulus lug boss A can be slided in sliding slot 20,16 He of annulus lug boss A Spring A 15 is provided between interconnecting piece 2,1 lower end of transverse supporting rod is provided with limiting slot A 19,17 end pin A Be provided with can in limiting slot A 19 movable poke rod A 18, specifically, the first is to use hand-motion there are two types of application method Poke rod A 18, poke rod A 18 drive pin A 17 mobile toward the direction far from hollow sleeve 7, and spring A 15 is stretched, institute Some hollow sleeves 7 is extracted out, and poke rod A 18 is decontroled, and is driven in the elastic force of spring A 15, and pin A 17 is toward 7 direction of hollow sleeve The head of movement, pin A 17 passes through three through-holes, blocks hollow sleeve 7, realizes and locks, i.e., usable extension ladder, and second Application method is to pull hollow sleeve 7 when needing using extension ladder, when the through-hole and the section hollow sleeve 7 of 7 upper end of hollow sleeve Upper 7 lower end of section hollow sleeve through-hole alignment after, through-hole is squeezed under the action of spring A 15 in the head of pin A 17 It is interior, through-hole is blocked, locking is realized, that is, can be used.When needing to pack up extension ladder, with hand-motion poke rod A 18, poke rod A 18 Drive pin A 17 mobile toward the direction far from hollow sleeve 7, pin A 17 is exited from the through-hole of 7 lower end of hollow sleeve, hollow Casing 7 can be packed up successively, can keep extension ladder well.

Embodiment 5

As shown in figure 5, the present embodiment is further improved on the basis of embodiment 1, the specially described locking assembly Including the pin B 27 being horizontally placed on inside transverse supporting rod 1,7 top and bottom of hollow sleeve offer pin B 27 The through-hole that head may pass through, the through hole that the interconnecting piece corresponds to 7 upper end of hollow sleeve also offer 27 head pin B and can wear The through-hole crossed, when the through-hole of upper 7 lower end of section hollow sleeve of the through-hole and section hollow sleeve 7 of 7 upper end of hollow sleeve is aligned Later, the head of pin B 27 can sequentially pass through the through-hole and the section hollow sleeve of 7 upper end of hollow sleeve from the through-hole of interconnecting piece The through-hole of upper 7 lower end of section hollow sleeve of pipe 7 realizes locking, is provided with annulus lug boss B 26 in the middle part of the pin B 27, Spring B 25 is provided between the annulus lug boss B 26 and interconnecting piece, 1 inside of transverse supporting rod is provided with two sides up and down Guide groove 21,27 tail portion pin B are provided with the slide bar 22 that can be slided in guide groove 21, are provided in the transverse supporting rod 1 Support 23, being horizontally disposed on the support 23 has electromagnet 24, and 22 material of slide bar is iron or cobalt or nickel, specifically, having two Kind application method, the first is that electromagnet 24 is powered, and electromagnet 24 attracts slide bar 22, and slide bar 22 drives pin B past separate hollow The direction of casing 7 is mobile, and spring B 25 stretches, and all hollow sleeves 7 are extracted out, and electromagnet 24 powers off, 24 pairs of cunnings of electromagnet The attraction of bar 22 disappears, and drives in the elastic force of spring B 25, pin B 27 is moved toward 7 direction of hollow sleeve, pin B's 27 Head passes through three through-holes, blocks hollow sleeve 7, realizes locking, that is, extension ladder can be used, and second of application method is to need to make When with extension ladder, hollow sleeve 7 is pulled, when the through-hole of 7 upper end of hollow sleeve and the upper section hollow sleeve of the section hollow sleeve 7 After the through-hole alignment of 7 lower ends, the head of pin B 27 is squeezed into through-hole under the action of spring B 25, blocks through-hole, is realized Locking can be used.When needing to pack up extension ladder, electromagnet 24 is powered, and electromagnet 24 attracts slide bar 22, and slide bar 22 drives pin B 27 is mobile toward the direction far from hollow sleeve 7, and pin B 27 is exited from the through-hole of 7 lower end of hollow sleeve, hollow sleeve 7 It successively packs up, extension ladder can be kept well.

Embodiment 6

As shown in fig. 6, the present embodiment is further improved on the basis of embodiment 1, it is specially further, described Locking assembly includes the pin C 28 being horizontally placed on inside transverse supporting rod 1, and 7 top and bottom of hollow sleeve offer The through hole of the through-hole that 28 head pin C may pass through, corresponding 7 upper end of hollow sleeve of the interconnecting piece 2 also offers pin C 28 The through-hole that head may pass through, when upper 7 lower end of section hollow sleeve of the through-hole and section hollow sleeve 7 of 7 upper end of hollow sleeve After through-hole alignment, the head of pin C 28 can sequentially pass through the through-hole of 7 upper end of hollow sleeve and is somebody's turn to do from the through-hole of interconnecting piece 2 The through-hole of upper 7 lower end of section hollow sleeve of hollow sleeve 7 is saved, realizes locking, 1 lower end of transverse supporting rod is provided with limiting slot B 29,28 tail portion pin C be provided with can in limiting slot B 29 movable poke rod B 30, in the transverse supporting rod 1 in Portion is provided with partition 32, is provided with spring C 31 between the partition 32 and poke rod B 30, specifically, there are two types of users Method, the first is to be pressed with hand-motion poke rod B 30, drive pin C toward the direction movement far from hollow sleeve 7, spring C 31 Contracting, extracts all hollow sleeves 7 out, decontrols poke rod B 30, and in the case where the elastic force of spring C 31 drives, pin B is toward hollow sleeve The head of the movement of 7 direction of pipe, pin C 28 passes through three through-holes, blocks hollow sleeve 7, realizes locking, that is, extension ladder can be used, Second of application method is to pull hollow sleeve 7 when needing using extension ladder, when in the through-hole and the section of 7 upper end of hollow sleeve After the through-hole alignment of upper 7 lower end of section hollow sleeve of empty set pipe 7, the head of pin C 28 is squeezed under the action of spring C 31 Enter in through-hole, block through-hole, realizes locking, that is, can be used.When needing to pack up extension ladder, with hand-motion poke rod B 30, drive Pin C is mobile toward the direction far from hollow sleeve 7, and spring C 31 compresses, and pin C 28 is moved back from the through-hole of 7 lower end of hollow sleeve Out, hollow sleeve 7 can be packed up successively, can keep extension ladder well.

Claims (7)

1. a kind of Multi-section telescopic ladder, including symmetrically arranged two terraced side columns (3), the ladder side column (3) is by more piece hollow sleeve (7) it is arranged, the caliber of the hollow sleeve (7) gradually successively decreases from the bottom up, and hollow sleeve (7) upper end is arranged with company Socket part (2) is provided between the identical hollow sleeve of caliber (7) on ladder side column (3) hollow by interconnecting piece (2) two-by-two Transverse supporting rod (1), which is characterized in that it is provided with locking assembly between transverse supporting rod (1) both ends and interconnecting piece (2), it is described It is provided with short circuit grounding component (4) on terraced side column (3), described ladder side column (3) lower end is provided with support base (5), the support base (5) lower end is provided with sucker (6).

2. a kind of Multi-section telescopic ladder according to claim 1, which is characterized in that the short circuit grounding component (4) includes receiving Wire box (8), winding box (8) setting are provided with reel (12), institute in hollow sleeve (7) side, the winding box (8) It states reel (12) one end to be rotatably connected on hollow sleeve (7), the other end is provided with handle (9), and the handle (9), which is stretched out, receives Outside, reel (12) winding is provided with short-circuit line (10) wire box (8), described short-circuit line (10) one end and hollow sleeve (7) Electrical connection, the other end are pierced by winding box (8) and are provided with brill ground nail (11).

3. a kind of Multi-section telescopic ladder according to claim 1 or 2, which is characterized in that transverse supporting rod (1) upper end is symmetrical It is provided with a pair of of recessed portion (13).

4. a kind of Multi-section telescopic ladder according to claim 3, which is characterized in that transverse supporting rod (1) lower end is provided with With the one-to-one lug boss (14) of the recessed portion (13).

5. a kind of Multi-section telescopic ladder according to claim 1, which is characterized in that the locking assembly includes being horizontally placed on The internal pin A (17) of transverse supporting rod (1), hollow sleeve (7) top and bottom offer pin A (17) head and can wear The through-hole crossed, the through hole of corresponding hollow sleeve (7) upper end of the interconnecting piece (2), which also offers pin A (17) head, may pass through Through-hole, the internal two sides up and down of the transverse supporting rod (1) are provided with sliding slot (20), be provided in the middle part of the pin A (17) and The annulus lug boss A (16) that sliding slot (20) matches is provided with spring A between the annulus lug boss A (16) and interconnecting piece (2) (15), transverse supporting rod (1) lower end is provided with limiting slot A (19), and pin A (17) end is provided with can be in limiting slot A (19) movable poke rod A (18) in.

6. a kind of Multi-section telescopic ladder according to claim 1, which is characterized in that the locking assembly includes being horizontally placed on The internal pin B (27) of transverse supporting rod (1), hollow sleeve (7) top and bottom offer pin B (27) head and can wear The through-hole crossed, the through hole of corresponding hollow sleeve (7) upper end of the interconnecting piece (2), which also offers pin B (27) head, may pass through Through-hole, be provided with annulus lug boss B (26), the annulus lug boss B (26) and interconnecting piece (2) in the middle part of the pin B (27) Between be provided with spring B (25), the internal two sides up and down of the transverse supporting rod (1) are provided with guide groove (22), the pin B (27) Tail portion is provided with the slide bar (21) that can be slided in guide groove (22), is provided with support (23), the branch in the transverse supporting rod (1) Being horizontally disposed on seat (23) has electromagnet (24), and slide bar (21) material is iron or cobalt or nickel.

7. a kind of Multi-section telescopic ladder according to claim 1, which is characterized in that the locking assembly includes being horizontally placed on The internal pin C (28) of transverse supporting rod (1), hollow sleeve (7) top and bottom offer pin C (28) head and can wear The through-hole crossed, the through hole of corresponding hollow sleeve (7) upper end of the interconnecting piece (2), which also offers pin C (28) head, may pass through Through-hole, transverse supporting rod (1) lower end is provided with limiting slot B (29), and pin C (28) tail portion is provided with can be in limiting slot Movable poke rod B (30) in B (29), middle part is provided with partition (32) in the transverse supporting rod (1), the partition (32) and group Spring C (31) are provided between lever B (30).