CN201100093Y

CN201100093Y - Dual-purpose telescopic ladder

Info

Publication number: CN201100093Y
Application number: CNU200720184037XU
Authority: CN
Inventors: 王万兴
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-10-11
Filing date: 2007-10-11
Publication date: 2008-08-13
Anticipated expiration: 2017-10-11

Abstract

The utility model relates to a dual-purpose extension ladder, which comprises rotating devices (3) which are arranged on the top of a left ladder (1) and the right ladder (2) and can rotate mutually and a rotating localizer, wherein the rotating devices are composed of a left ladder rotating blade (31) and a right ladder rotating blade (32) with a same rotating shaft (33), the left ladder rotating blade and the right ladder rotating blade are connected with the top of the left ladder and the top of the right ladder, the left ladder rotating blade and the right ladder rotating blade are vertical to the inner surface of the rotating shaft and clung mutually, the rotating localizer contains a first key box (8) and a second key box (81) which are on the top of the left ladder rotating page and separated, the geometric shapes and size of the first key box and the second key box are corresponded, a positioning key (6) with a spring is arranged on the upper portion of the right ladder rotating page corresponding to the key box, a lever (5) is arranged on the upper portion of the right ladder rotating page, the end portion of the lever is contacted with the positioning key, and the other end is connected with an operating connecting bar (4). The dual-purpose extension ladder of the utility model can be completely extended to the synthesized height of the left ladder and the right ladder, thereby the using range is enlarged, the using stability is comparatively good, and the operation is rapid and convenient.

Description

A kind of dual-purpose telescopic ladder

Technical field

The utility model relates to a kind of terraced field of ascending a height, and particularly relates to a kind ofly having expansion performance, not only can constitute double-arm herringbone independence ladder but also can constituting the dual-purpose telescopic ladder of single armed Recumbent ladder.It is suitable for and need takes aloft safely and deposit article and use in various differing heights and the various difference occasion of ascending a height.

Background technology

Dual-purpose telescopic ladder is various in style in the market; The utility model patent that the China Patent No. 200620140944.X " herringbone extension ladder " that the applicant authorized is wherein arranged, its structure comprise the left and right ladder that the herringbone that has established angle is arranged, the top of this left side ladder and right ladder interconnects; This left side ladder and right ladder respectively are provided with the forward and backward vertical rod of symmetric configuration, and the compartment of terrain is distributed with a plurality of crosspieces between this forward and backward vertical rod, and the two ends of this crosspiece are connected with described forward and backward vertical rod respectively.This forward and backward vertical rod is made up of the mutual socket of the telescopic vertical rod of more piece; Be provided with the extremity piece that is connected of band vertical rod constriction device between this crosspiece and the described forward and backward vertical rod.Top is provided with the top tie-beam between the described left and right ladder.The middle part is provided with the established angle positioning beam between the described left and right ladder.Described vertical rod bottom is provided with the foot of ladder that parallels with described crosspiece.Described established angle positioning beam is connected to form by two Half Beams, and the below between described two Half Beams is provided with a draw ring that can draw described left and right ladder in.Above-mentioned China Patent No. 200620140944.X's " herringbone extension ladder " is rational in infrastructure, and described left and right ladder has expansion performance, and it is little to shrink the back volume, is easy to carry about with one and carries, simple to operate again, quick.

Yet its weak point is the established angle positioning beam that the middle part is provided with between described top tie-beam and the described left and right ladder all can not close up when using in the single armed Recumbent occasion mutually fully; So when in being applied to single armed Recumbent ladder occasion, using, can only when double-arm herringbone independence ladder state, launch to use, thereby it can not launch the synthetic height of described left and right ladder fully; Next is that described top tie-beam is not ideal with being connected with the rigidity of structure of location of described established angle positioning beam, can influence the ladder stability when ascending a height thus.

The utility model content

The purpose of this utility model is exactly in order to solve above-mentioned problems of the prior art, a kind of synthetic height that not only can launch left and right ladder fully is provided, but also has the dual-purpose telescopic ladder of syndeton rigidity preferably.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: this dual-purpose telescopic ladder comprises left side ladder and right ladder, this left side ladder is provided with coupling assembling with an end of this right side ladder, it is characterized in that: this coupling assembling be set to can be between a termination of this left side ladder and this right side ladder tumbler in relative rotation, this tumbler is provided with swing stop.

The structure of described positioner and locator thereof has positioning and rigid preferably simultaneously in order to realize launching this left side ladder and right terraced synthetic height fully.

Described tumbler can be set to be made up of left terraced blade-rotating and right terraced blade-rotating with same rotating shaft, and this left side ladder blade-rotating is connected with terraced top, a described left side, and this right side ladder blade-rotating is connected with terraced top, the described right side; This left side ladder blade-rotating and the ladder blade-rotating of this right side are amplexiformed mutually perpendicular to the medial surface of described rotating shaft.Because left and right ladder is to amplexiform by the side of this left and right terraced blade-rotating, the contact surface of connected mode is big between this plane and the plane, so it is good to connect rigidity, uses solid and reliable; Can improve between the left and right ladder guidance quality in relative rotation again.

The same circumference that described swing stop can be made the terraced blade-rotating head in a described left side be provided with two geometries and consistent size, first keyway and second keyway of an angle separately, the position that the top of the terraced blade-rotating in the described right side corresponds to this first keyway is provided with the positioning key of band spring fastening; This first keyway, second keyway match with this positioning key.The accuracy that adopts key to cooperate with keyway is higher, thereby left and right terraced blade-rotating positioning accuracy is good, and the good rigidly that is located by connecting; And the map function when the utility model uses under both arms herringbone form and two states of single armed Recumbent is efficient and convenient.

Described positioning key one end can connect a spring, and this spring places described spring fastening; Its effect is to fall into the correct rapidly location of this keyway when described positioning key, guarantees the stability of the utility model when herringbone is launched user mode.

Described first keyway can be arranged on the terraced blade-rotating in the terraced blade-rotating in a described left side and the described right side constitute the herringbone angle of spread be 30～50 degree just in time with described positioning key mated position.Described second keyway can be arranged on the terraced blade-rotating angle of spread of the terraced blade-rotating in a described left side and the described right side be 180 the degree just in time with described positioning key mated position.To guarantee the stability of the utility model when left side ladder and right ladder launch fully and constitute single armed Recumbent ladder user mode.

The top of the terraced blade-rotating in the described right side corresponds on the position of described positioning key a lever preferably is set, and described positioning key is touched in the end of this lever, and the other end of this lever is connected with an operator link.By two duties of this connecting rod operation positioning key, very convenient, reliable.

The terraced blade-rotating in a described left side can be set to screw with described left ladder, the terraced blade-rotating in the described right side with described right ladder and be connected, and also can be set to rivet and connect; Screw is linked and packed conveniently.

The bottom of described right ladder is provided with foot of ladder, and this foot of ladder is used to strengthen the stability in use of the utility model as the Recumbent ladder.

The terraced blade-rotating in a described left side and described left side ladder can be set to plane teeth perpendicular to the medial surface of described rotating shaft and be meshing with each other and be connected; Described plane teeth is set to square shaped teeth or stepped tooth or serrated teeth; Its effect is that this plane teeth interconnects structure and has bigger contact area and contact strength, but also has described left side ladder and right terraced angle of spread auxiliary positioning function.

Therefore the utility model can launch the synthetic height of described left and right ladder fully, thereby enlarge the scope of application owing to adopt the rotary connecting device and the rotary positioning structure thereof of left side ladder and right ladder; Next is that the rigidity of structure of rotational positioning is good, use the swift and convenient to operate of conversion under both arms herringbone form and two states of single armed Recumbent, and stability in use is also relatively good.

Description of drawings

Fig. 1 for the utility model when left side ladder with right ladder the tumbler structural representation during at rounding state;

Fig. 2 for the utility model when left side ladder with right ladder the tumbler structural representation during in the herringbone deployed condition;

Fig. 3 for the utility model when left side ladder with right ladder the tumbler structural representation during in single armed Recumbent ladder user mode;

Fig. 4 is that the utility model left side ladder constitutes herringbone deployed condition structural representation with right ladder;

Structural representation when Fig. 5 is left ladder of the utility model and right ladder formation single armed Recumbent ladder user mode;

Schematic diagram when Fig. 6 is the utility model rounding state;

Fig. 7 is the connection diagram of the utility model terraced blade-rotating in a left side and right terraced blade-rotating;

Fig. 8 is the connection diagram of the utility model operator link and left and right terraced blade-rotating;

Fig. 9 is another embodiment structural representation of terraced blade-rotating in a left side of the present utility model and right terraced blade-rotating;

The specific embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Fig. 1 to Fig. 8 shows an embodiment of the utility model dual-purpose telescopic ladder, and it is included in an interconnective left side, top ladder 1 and right ladder 2, and this left side ladder 1 is the tumblers 3 that can rotate mutually with the top syndeton of right ladder 2.

This left side ladder is made up of more piece vertical rod 12 mutual sockets with right ladder, the compartment of terrain is distributed with a plurality of crosspieces 8 between this vertical rod, the two ends of this crosspiece are connected with described vertical rod respectively, be provided with the extremity piece that is connected of constriction device between this crosspiece and the described vertical rod, described left side ladder can stretch separately separately with described right ladder.

Above-mentioned tumbler 3 is made up of with right terraced blade-rotating 32 the left terraced blade-rotating 31 with same rotating shaft 33, and this left side ladder blade-rotating 31 is connected with left side ladder 1, and this right side ladder blade-rotating 32 is connected with left side ladder 1; The medial surface perpendicular to described rotating shaft 33 of this left side ladder blade-rotating 31 and right terraced blade-rotating 32 is abutted against mutually.Because left and right ladder is to amplexiform by the side of this left and right terraced blade-rotating, the contact surface that is connected between this plane and the plane is big, so it is good to connect rigidity, uses solid and reliable; Can improve between the left and right ladder guidance quality in relative rotation again.

As the terraced blade-rotating in a left side of the present utility model and another embodiment of right terraced blade-rotating is that the ladder blade-rotating 31 of this left side is set to plane teeth mutually with the medial surface perpendicular to described rotating shaft 33 of right terraced blade-rotating 32 and is connected; This plane teeth can be set to square shaped teeth, also can be set to stepped tooth or serrated teeth; This plane teeth interconnects structure and has bigger contact area and contact strength, but also has the multi-faceted auxiliary positioning function of the described left side ladder and the right terraced angle of spread, as shown in Figure 9.Thereby described left side ladder can reach 0～200 degree with the scope of the right terraced angle of spread.

The head excircle of the terraced blade-rotating 31 in a described left side is provided with first keyway 8 and second keyway 82 of certain angle separately, and the position that the top of the terraced blade-rotating 32 in the described right side corresponds to this first keyway 8 is provided with the positioning key 6 of the spring fastening 71 of band; This first keyway 8 matches with this positioning key 6; These positioning key 6 one ends connect a spring 7, and this spring 7 places described spring fastening 71.

When left side ladder 1 and right ladder 2 constitute the herringbone angles of spread is 30～50 when spending, and positioning key 6 is arranged in first keyway 8; Launching fully and constitute the angle of spread when left side ladder 1 and right ladder 2 is 180 when spending, and positioning key 6 is arranged in second keyway 81.

The top of the terraced blade-rotating 32 in the described right side corresponds on the position of described positioning key 6 lever 5 is set, and the other end of this lever 5 is connected with an operator link 4.

The utility model operating process is such:

It is left terraced blade-rotating 31 and right terraced blade-rotating 32 when closing up that primary importance left side ladder and right ladder close up state, and as shown in Figure 1, at this moment positioning key 6 is positioned on the circumferential edge of left ladder 1;

Second place left side ladder constitutes herringbone with right ladder and launches user mode from outside rotary state shown in Figure 1 left side ladder 1, positioning key 6 is put 33 places near the circumference height of left terraced blade-rotating 31 gradually, and under the effect of spring 7, positioning key 6 is pushed into first keyway 8 that is positioned on the high point of this circumference, as shown in Figure 2, at this moment left side ladder 1 constitutes double-arm herringbone independence ladder form with right ladder 2, just can be used as telescopic double ladder and uses;

The 3rd position left side ladder and right ladder launch fully and constitute single armed Recumbent ladder user mode elder generation pull operation connecting rod 4 towards counterclockwise rotating, and drive lever 5 rotates and compressing positioning key 6, and positioning key 6 is pushed out from first keyway 8; Then, outwards rotate left side ladder again, enter second keyway 81 of left terraced blade-rotating 31 up to positioning key 6, be in Fig. 3 state this moment, promptly a left side terraced 1 and right ladder 2 connect into linear state, and left and right ladder is realized the synthetic height of expansion fully, and can be used as the use of single armed Recumbent ladder.

Otherwise pull operation connecting rod 4 drives lever 5 rotations and compressing positioning key 6 towards counterclockwise rotating, and positioning key 6 is pushed out from second keyway 8; Then, inwardly rotate left side ladder again, enter first keyway 8 of left terraced blade-rotating 31 up to positioning key 6, this moment, left side ladder 1 was in Fig. 2 state again with right ladder 2; Continue operation in the same way, left ladder and right ladder promptly return to and close up state.

The bottom of right ladder 2 is provided with the foot of ladder 9 that parallels with crosspiece 8.This foot of ladder is the stability in use when strengthening the utility model as use of Recumbent ladder or herringbone expansion.

The utility model can use under two states, and promptly left and right ladder is set to double-arm herringbone ladder state and uses, as shown in Figure 4; And the use of single armed Recumbent ladder state, as shown in Figure 5.

Left and right ladder of the present utility model can about draw in, can shrink up and down again, Fig. 6 illustrates left and right ladder of the present utility model and is in left and right sides rounding state and is in contraction state up and down simultaneously again.

It is little that left and right ladder of the present utility model shrinks the back volume, is easy to carry about with one and carries; Stability in use is good, simple and efficient to handle again.

Claims

1. dual-purpose telescopic ladder, it comprises left side ladder (1) and right ladder (2), this left side ladder (1) is provided with coupling assembling with an end of right ladder (2), it is characterized in that: this coupling assembling be set to can be between a termination of this left side ladder (1) and this right side ladder (2) tumbler (3) in relative rotation, this tumbler (3) is provided with swing stop.

2. dual-purpose telescopic ladder according to claim 1, it is characterized in that: described tumbler (3) is made up of with right terraced blade-rotating (32) the left terraced blade-rotating (31) with same rotating shaft (33), this left side ladder blade-rotating (31) is connected with ladder (1) top, a described left side, and this right side ladder blade-rotating (32) is connected with described right ladder (2) top; This left side ladder blade-rotating (31) is amplexiformed mutually with the medial surface of this right side ladder blade-rotating (32) perpendicular to described rotating shaft (33).

3. dual-purpose telescopic ladder according to claim 1 is characterized in that: the same circumference that described swing stop includes the terraced blade-rotating in a described left side (31) head be provided with at least two geometries and consistent size, first keyway (8) and second keyway (81) of an angle separately; The position that the top of the terraced blade-rotating in the described right side (32) corresponds to this first keyway (8) is provided with the positioning key (6) of being with spring fastening (71); This first keyway (8) matches with this positioning key (6).

4. dual-purpose telescopic ladder according to claim 3 is characterized in that: described positioning key (6) one ends connect a spring (7), and this spring places described spring fastening (71).

5. according to claim 3 or 4 described dual-purpose telescopic ladders, it is characterized in that: described first keyway (8) be arranged on the terraced blade-rotating in a described left side (31) and the terraced blade-rotating in the described right side (32) constitute the herringbone angle of spread be 30～50 degree just in time with described positioning key (6) mated position.

6. dual-purpose telescopic ladder according to claim 5 is characterized in that: described second keyway (81) be arranged on the terraced blade-rotating in a described left side (31) and the terraced blade-rotating in the described right side (32) angle of spread be 180 degree just in time with described positioning key (6) mated position.

7. dual-purpose telescopic ladder according to claim 6, it is characterized in that: the top of the terraced blade-rotating in the described right side (32) corresponds on the position of described positioning key (6) lever (5) is set, described positioning key (6) is touched in the end of this lever, and the other end of this lever is connected with an operator link (4).

8. dual-purpose telescopic ladder according to claim 6 is characterized in that: the terraced blade-rotating in a described left side (31) is set to screw with described left side ladder (1) and is connected, and the terraced blade-rotating in the described right side (32) is set to screw with described right ladder (2) and is connected.

9. dual-purpose telescopic ladder according to claim 8 is characterized in that: the bottom of described right ladder (2) is provided with foot of ladder (9).

10. dual-purpose telescopic ladder according to claim 6 is characterized in that: the terraced blade-rotating in a described left side (31) and described left side ladder (1) are set to plane teeth perpendicular to the medial surface of described rotating shaft (33) and are meshing with each other and are connected; Described plane teeth is set to square shaped teeth or stepped tooth or serrated teeth.