CN101173597B - Liftable V-ladder - Google Patents
Liftable V-ladder Download PDFInfo
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- CN101173597B CN101173597B CN200610069944A CN200610069944A CN101173597B CN 101173597 B CN101173597 B CN 101173597B CN 200610069944 A CN200610069944 A CN 200610069944A CN 200610069944 A CN200610069944 A CN 200610069944A CN 101173597 B CN101173597 B CN 101173597B
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- ladder
- lift
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- fixing hole
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/14—Ladders capable of standing by themselves
- E06C1/16—Ladders capable of standing by themselves with hinged struts which rest on the ground
- E06C1/18—Ladders capable of standing by themselves with hinged struts which rest on the ground with supporting struts formed as ladders
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/04—Ladders for resting against objects, e.g. walls poles, trees
- E06C1/08—Ladders for resting against objects, e.g. walls poles, trees multi-part
- E06C1/12—Ladders for resting against objects, e.g. walls poles, trees multi-part extensible, e.g. telescopic
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/14—Ladders capable of standing by themselves
- E06C1/16—Ladders capable of standing by themselves with hinged struts which rest on the ground
- E06C1/20—Ladders capable of standing by themselves with hinged struts which rest on the ground with supporting struts formed as poles
- E06C1/22—Ladders capable of standing by themselves with hinged struts which rest on the ground with supporting struts formed as poles with extensible, e.g. telescopic, ladder parts or struts
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/06—Securing devices or hooks for parts of extensible ladders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ladders (AREA)
Abstract
The invention discloses a rise and fall herringbone step ladder, comprising a fixed ladder, a transition ladder and an escalator; wherein, the upper end of the fixed ladder is rotatablely connected with the upper end of the transition ladder; the escalator is vertically and rotatablely connected with the transition ladder. The fixed ladder and the transition ladder can separate and be positioned to form a step ladder, or fold and be positioned to form a normal ladder. The escalator can slide relatively to the transition ladder, so that the top end can extend out of the top end of the transition ladder or/and the lower end can extend out of the lower end of the transition ladder. The invention adopts the technical proposal that: the escalator can slide relatively to the transition ladder to make the upper end extend out of the upper end of the transition ladder or make the lower end extend out of the lower end of the transition ladder, thus the height of the step ladder or the normal ladder is increased and the step ladder is suitable for various places no matter the places are not flat or stepped. The invention has the advantages of diversified adjustment functions and large height adjustment range.
Description
Technical field
The present invention relates to a kind of free-standing ladder, particularly relate to a kind of liftable double ladder.
Background technology
Early stage double ladder comprises that two fixed ladders and are located at the positioner between two fixed ladders, constitutes between this two fixed ladders top to be rotatably connected, and the expansible location is to form double ladder or to amount to the location to form yi shaped ladder between two fixed ladders.This double ladder is that free-standing ladder is widely used, but because two fixed ladders all can not be adjusted at length direction and then make this herringbone ladder have following shortcoming: can only be applied to ground and flush the place, at the ladder place or the use of this double ladder of the place of being uneven just be subjected to great restriction.
Have the people to propose solution at above-mentioned shortcoming: double ladder comprises that two fixed ladders and are located at the positioner between two fixed ladders, constitute between this two fixed ladders top and be rotatably connected, the expansible location is to form double ladder or to amount to the location to form yi shaped ladder between two fixed ladders; Wherein, has a fixed ladder height-adjustable at least so that this double ladder can be applicable to ladder place or other uneven occasions.As Chinese patent database introduce 03274778, wherein a fixed ladder bottom is also amounted to be connected with and is increased ladder, opens this and increases ladder and can increase the fixed ladder height; As 96237633 of the many introductions of Chinese patent database, wherein be provided with the ladder that increases that can stretch in the fixed ladder lower end downwards; As Chinese patent database introduce 200320122477, wherein be equipped with the ladder that increases that can stretch in the two fixed ladder lower ends downwards.Though these several solutions have all solved the shortcoming that the field of employment is limited by ground, can interiorly among a small circle adjust double ladder or yi shaped ladder height, but because the ladder lifting downwards of increasing of those solutions is located to be applied to ladder place or ground injustice, and the lifting and stretch out in the fixed ladder top of can not making progress, make that then adjustable height is little, the height adjustment range of whole double ladder or yi shaped ladder is little, and the ladder application places in height is subjected to certain limitation.
Summary of the invention
The invention provides a kind of liftable double ladder, its herringbone ladder that has not only overcome prior art can only be applied to the little shortcoming of ladder height adjustment range that shortcoming that ground flushes the place has also overcome prior art.
Purpose of the present invention realizes like this: a kind of liftable double ladder, comprise fixed ladder, excessively ladder and lift, fixed ladder upper end and excessively constituting between the ladder upper end is rotatably connected, lift and excessively between the ladder formation can slide up and down connection; Wherein, the expansible location is to form double ladder or to amount to the location to form yi shaped ladder between fixed ladder and the excessive ladder, and relatively excessively terraced slip of lift makes its bottom stretch out in excessive terraced bottom so that its top ends stretches out in excessive terraced top.
Double ladder of the present invention, be provided with positioner between described fixed ladder and the excessive ladder, it comprises first connector and second connector, one end of first connector is articulated in fixed ladder, one end of second connector is articulated in excessive ladder, and the other end of the other end of first connector and second connector is articulated and connected.
Double ladder of the present invention includes lock connector, and it can select the relative position between interlocking lift and the excessive ladder, or, the relative position between interlocking fixed ladder, lift and the excessive ladder.
Double ladder of the present invention, described lock connector comprise that several are arranged above and below and evenly the compartment of terrain is opened in lift lift span, is opened in first fixing hole and a handle of excessive ladder, this handle a certain lift span of interlocking and first fixing hole.
Double ladder of the present invention, described lock connector comprise a locking plate and a plectrum, and the locking plate upper side offers the draw-in groove that is matched with the fixed ladder pedal, and this draw-in groove bottom stretches out into the butting section; Wherein, the locking plate bottom is rotationally connected with fixed ladder, and the draw-in groove of locking plate is connected in the fixed ladder pedal and the butting section stretches out in fixed ladder, and when amounting to into yi shaped ladder, lift pedal bottom surface is located against the butting section.
Double ladder of the present invention, described lock connector comprise that also first fixing hole, that several are arranged above and below and evenly the compartment of terrain is opened in lift lift span, is opened in excessive ladder is opened in second fixing hole and a handle of fixed ladder; Wherein, this handle can be selected a certain lift span of interlocking and first fixing hole or interlocking first fixing hole and second fixing hole.
Double ladder of the present invention, second fixing hole offer the pedal position of position corresponding to fixed ladder; Each lift span offer the corresponding pedal position that the position corresponds respectively to lift.
Double ladder of the present invention, the 1/4-1/2 that described excessive terraced length is fixed ladder length, lift length is the 1/2-1 of fixed ladder length.
Double ladder of the present invention offers chute on the described excessive ladder, and lift is slidingly connected to chute.
Double ladder of the present invention offers the storage tank that is matched with the fixed ladder sidepiece on the side that is close to fixed ladder of described excessive ladder.
The technical program is compared with background technology, have following advantage: lift relatively excessively ladder slip makes its bottom stretch out in excessive terraced bottom so that its top ends stretches out in excessive terraced top, can improve the height of whole double ladder or yi shaped ladder, even can make double ladder be applicable to that this ground, place, various places is uneven or be ladder, the lift of this ladder adjust functional diversities and also the ladder height adjustment range big; Lock connector can be selected: the relative position when ladder becomes herringbone scalariform attitude between interlocking lift and the excessive ladder, or, the relative position when ladder becomes the yi shaped ladder state between interlocking fixed ladder, lift and the excessive ladder; Amount to and when being positioned to yi shaped ladder, because the draw-in groove of locking plate is connected in the fixed ladder pedal and the butting section stretches out in fixed ladder, lift pedal bottom surface locate against the butting section end face, can prevent that then lift is relatively excessively terraced to lower slider, interlocking is firm; Each lift span offer the corresponding pedal position that the position corresponds respectively to lift, second fixing hole offer the pedal position of position corresponding to fixed ladder, make handle can abut mutually with pedal, can be convenient to ladder about the user; Excessively offer chute on the ladder, lift is slidingly connected to chute, and it is convenient, easy to adjust to slide, and is firm behind the interlocking; Offer the storage tank that is matched with excessive side of the ladder portion on the side that is close to excessive ladder of fixed ladder, amount to into yi shaped ladder after, it is little to take up room, the carrying collection is convenient.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the perspective view that the ladder of the embodiment of the invention one becomes herringbone scalariform attitude, and wherein, the lift bottom stretches out in excessive terraced bottom.
Fig. 2 is the perspective view that the ladder of the embodiment of the invention one becomes herringbone scalariform attitude, and wherein, the lift top stretches out in excessive terraced top, and the lift bottom stretches out in excessive terraced bottom.
Fig. 3 is the perspective view that the ladder of the embodiment of the invention one becomes the yi shaped ladder state, and wherein, the lift top stretches out in excessive terraced top.
Fig. 4 is the perspective view that the ladder of the embodiment of the invention one becomes the yi shaped ladder state, and wherein, the lift bottom stretches out in excessive terraced bottom.
Fig. 5 is that the ladder of the embodiment of the invention one becomes the master of herringbone scalariform attitude to look schematic diagram, and wherein, the lift bottom stretches out in excessive terraced bottom.
Fig. 6 is that the ladder of the embodiment of the invention one becomes the master of yi shaped ladder state to look schematic diagram, and wherein, the lift top stretches out in excessive terraced top.
Fig. 7 is that the ladder of the embodiment of the invention one becomes the master of yi shaped ladder state to look schematic diagram, and wherein, the lift bottom stretches out in excessive terraced bottom.
Fig. 8 is the perspective view of Convenient table pipe of the fixed ladder of the embodiment of the invention one.
Fig. 9 is the perspective view of lifting leg pipe of the lift of the embodiment of the invention one.
Figure 10 is the perspective view of excessive leg pipe of the excessive ladder of the embodiment of the invention one.
Figure 11 is the horizontal profile schematic diagram that the ladder of the embodiment of the invention one becomes the yi shaped ladder state.
Figure 12 is the perspective view of the support chip of the embodiment of the invention one.
Figure 13 is the perspective view of the locking plate of the embodiment of the invention one.
Figure 14 is the perspective view of the plectrum of the embodiment of the invention one.
Figure 15 is the perspective view of the stator of the embodiment of the invention one.
Figure 16 is the perspective view of the handle of the embodiment of the invention one.
Figure 17 is the generalized section that the ladder of the embodiment of the invention one becomes the yi shaped ladder state, and wherein, the lift pedal is abutted against in the butting section of interlocking sheet.
Figure 18 is the generalized section that the ladder of the embodiment of the invention one becomes the yi shaped ladder state, and wherein, the lift pedal backs down plectrum and drives locking plate and a little outwards rotates with the slip lift.
Figure 19 is the generalized section that the ladder of the embodiment of the invention one becomes the yi shaped ladder state, and wherein, the lift pedal backs down locking plate and drives locking plate and a little outwards rotates with the slip lift.
Figure 20 is the horizontal profile schematic diagram that the ladder of the embodiment of the invention two becomes the yi shaped ladder state.
Figure 21 is the horizontal profile schematic diagram that the ladder of the embodiment of the invention three becomes the yi shaped ladder state.
Figure 22 is the horizontal profile schematic diagram that the ladder of the embodiment of the invention four becomes the yi shaped ladder state.
Figure 23 is the horizontal profile schematic diagram that the ladder of the embodiment of the invention five becomes the yi shaped ladder state.
Figure 24 is the horizontal profile schematic diagram that the ladder of the embodiment of the invention six becomes the yi shaped ladder state.
Figure 25 is the horizontal profile schematic diagram that the ladder of the embodiment of the invention seven becomes the yi shaped ladder state.
Figure 26 is the perspective view that the ladder of the embodiment of the invention eight becomes herringbone scalariform attitude, and wherein, the lift bottom stretches out in excessive terraced bottom.
Figure 27 is the perspective view that the ladder of the embodiment of the invention eight becomes the yi shaped ladder state, and wherein, the lift bottom stretches out in excessive terraced bottom.
Figure 28 is the perspective view that the ladder of the embodiment of the invention eight becomes the yi shaped ladder state, and wherein, the lift top stretches out in excessive terraced top.
Figure 29 is the perspective view that the ladder of the embodiment of the invention eight becomes herringbone scalariform attitude, and wherein, the lift top stretches out in excessive terraced top.
The specific embodiment
Embodiment one
A kind of liftable double ladder, shown in Fig. 1,2,3,4,5,6,7, comprise fixed ladder 1, excessive ladder 2 and lift 3, constitute between fixed ladder 1 upper end and excessive terraced 2 upper ends and be rotatably connected, constitute between lift 3 and the excessive ladder 2 and can slide up and down connection. wherein, excessively terraced 2 length are about 1/3 of fixed ladder 1 length, and lift 3 length approximate fixed ladder 1 length.
Shown in Fig. 1,8, fixed ladder 1 comprises that the two Convenient table pipes 11 that be arranged in parallel and several are fixed in the pedal 12 between the two Convenient table pipes 11, and those several pedals 12 are horizontally disposed with; As shown in figure 11, described Convenient table pipe 11 level cross-sectionns become class R font.Offer several second fixing holes 13 on the fixed ladder 1, even up and down interval of those second fixing holes 13 and axis become horizon, and wherein, each second fixing hole 13 all runs through two Convenient table pipes 11 and a pedal 12 centers.
As shown in Figure 1, Convenient table pipe 11 inboards are provided with support chip 14, shown in Fig. 1,12,14 one-tenth zigzags of this support chip also comprise an intermediate 141 and two lateral plates 142, wherein, a lateral plate 142 fixedly amplexiforms in Convenient table pipe 11 inboards, and another lateral plate 142 is pivotally connected at Convenient table pipe 11 by one.Also be articulated with locking plate 15 on the pivot, locking plate 15 bottoms are sandwiched between another lateral plate 142 and the Convenient table pipe 11.Shown in Fig. 1,13, locking plate 15 sides offer draw-in groove 151, and the part of draw-in groove 151 inside is fit to pedal 12; Draw-in groove 151 tops become hook-type 152, and draw-in groove 151 bottoms stretch out into butting section 153, butting section 153 end faces become against the plane 155 and the bottom surface become inclined-plane 154.Locking plate 15 bottoms are rotationally connected with the Convenient table pipe 11 of fixed ladder, and pedal 12 and butting section 153 that the draw-in groove 151 of locking plate 15 is connected in fixed ladder 1 stretch out in fixed ladder 1.These hook-type 152 terminal part places are articulated with plectrum 16, and plectrum 16 can be used for sealing this draw-in groove 151, and is furnished with position limiting structure so that have the maximum rotation angle between it between plectrum 16 and the hook-type 152.Carry, carry this ladder for the ease of the user, be provided with handle portion 17 Convenient table pipe 11 outer concave.
Shown in Fig. 1,10, excessively ladder 2 comprises the two excessive leg pipes 21 that be arranged in parallel and is fixed in fixed bar between the two excessive leg pipes, is not provided with pedal in it; As shown in figure 11, described excessive leg pipe 21 left sides are provided with the storage tank 22 of the peristome that is matched with R font Convenient table pipe 11, and the right side is provided with the big chute of young abdomen 23.Excessively offer one first fixing hole 211 on the leg pipe 21, this first fixing hole 211 runs through chute 23 and first fixing hole, 211 axis become horizon.
Shown in Fig. 1,15, excessively leg pipe 21 lateral surfaces are fixed with stator 24, and its part is stretched out excessive leg pipe 21 right flanks; Offer first through hole 241 and second through hole 242 on the stator 24, wherein, first through hole 241 and first fixing hole are coaxial and with the footpath, second through hole 242 is positioned at the extension of stator 24.
Shown in Fig. 1,2,3,4,5,6,7, two above-mentioned excessive leg pipe 21 tops are articulated in two Convenient table pipes, 11 tops respectively, make to constitute between fixed ladder 1 upper end and excessive terraced 2 upper ends to be rotatably connected.Excessively also be connected with positioner between leg pipe 21 and the Convenient table pipe 11, it comprises first connector 41 and second connector 42, one end of first connector 41 is articulated in Convenient table pipe 11, one end of second connector 42 is articulated in the other end of excessive leg pipe 21, the first connectors 41 and the other end of second connector 42 is articulated and connected; Make and constitute folding four rod member assemblies between excessive leg pipe 21, Convenient table pipe 11, first connector 41 and second connector 42.When launching fixed ladder 1 and 2 one-tenth double ladders of excessive ladder, but by the relative expanded position between this positioner positioning and fixing ladder 1 and the excessive ladder 2; Amount to fixed ladder 1 and excessively during 2 one-tenth yi shaped ladders of ladder, the opening of R font Convenient table pipe 11 takes up room after amounting to minimizing in excessive leg pipe 21 left side storage tanks 22.
Shown in Fig. 1,9, lift 3 comprises that the two lifting leg pipes 31 that be arranged in parallel and several are fixed in the pedal 32 between the two lifting leg pipes 31, and those several pedals 32 are horizontally disposed with.As shown in figure 11,31 one-tenth class square shapes of described lifting leg pipe, and also left part front and back sides indent is so that lifting leg pipe 31 left parts form the slide rail 33 that is matched with chute 23.Offer several lift spans 34 on the lift 3, evenly interval and axis become horizon to those lift spans 34 up and down, wherein, each lift span 34 all runs through two lifting leg pipes 31 and a pedal 32 centers, and second through hole 242 of these lift span 34 present positions and stator 24 is corresponding, and equal diameters.
Shown in Fig. 1,2,3,4,5,6,7, the slide rail 33 of above-mentioned lifting leg pipe 31 slidably is arranged in the chute 23 of excessive leg pipe 21, make lifting leg pipe 31 can be relatively excessively leg pipe 21 slide, also be lift 3 relatively excessively ladder 2 slide so that its top ends stretches out in excessive terraced 2 tops or make its bottom stretch out in excessive terraced 2 bottoms. certain also need to be provided with stopping means and break away from excessive leg pipe 21. to prevent lifting leg pipe 31
Other is furnished with lock connector and has following function: one, launch fixed ladder 1 and excessively terraced 2 one-tenth double ladders, but the relative position between lock connector interlocking lifting leg pipe 31 and the excessive leg pipe 21, to prevent lifting leg pipe 31 and excessively to slide relatively between the leg pipe 21, also be the excessively relative position of ladder 2 and lift 3 of interlocking, this interlocking of pine oil i.e. lifting leg pipe 31 slidably; They are two years old, amount to fixed ladder 1 and excessively terraced 2 one-tenth yi shaped ladders, but the relative position between lock connector interlocking Convenient table pipe 11, lifting leg pipe 31 and the excessive leg pipe 21, or, relative position between interlocking Convenient table pipe 11 and the excessive leg pipe 21, with prevent fixed ladder 1 and excessively ladder 2 launch, to prevent lifting leg pipe 31 and excessively to slide relatively between the leg pipe 21 or prevent lifting leg pipe 31 relatively excessively leg pipe 21 is to lower slider that this interlocking of pine oil i.e. lifting leg pipe 31 or be launched into double ladder slidably.
In the present embodiment, as shown in figure 16, lock connector also comprises two handles 5 except above-mentioned lift span, first fixing hole, second fixing hole, locking plate, plectrum, handle 5 comprises one handle 51, a fixed leg 52, a latch 53, the afterbody of handle 51 work sides outwards protrudes into first connecting portion and second connecting portion respectively with the middle part, this latch 53 and fixed leg 52 are fixed in two first connecting portions and second connecting portion respectively, and this kind structure can be convenient to user's interlocking or this interlocking of pine oil.Fixed leg 52 length equal 1/2nd of pedal 12 length, and fixed leg 52 is matched with first fixing hole 211, and latch 53 is matched with second fixing hole 13, lift span 34.Wherein, fixed leg 52 and latch 53 are uneven in length, and need not during this interlocking of pine oil all to transfer to handle to make it break away from double ladder fully, can prevent that then this handle from losing but also be convenient to interlocking and pine oil.
Below in conjunction with using example to specify the using method of this ladder:
Shown in Fig. 1,2,5, launch fixed ladder 1 and excessively terraced 2 one-tenth double ladders, the start point of this double ladder is located by positioner; Slip lift 3 is adjusted the relative position of lift 3 and excessive ladder 2 so that it is matched with ladder place or uneven place; Two handles 5 move respectively in opposite directions, the fixed leg 52 of handle 5 passes first through hole 241 of stator 24 and first fixing hole 211 of excessive ladder 2, latch 53 passes second through hole 242 of stator 24 and some lift spans 34 of lift 3, with interlocking lift 3 and excessive ladder 2.
Shown in Fig. 3,4,6,7, amount to fixed ladder 1 and excessively terraced 2 one-tenth yi shaped ladders, two handles 5 move respectively in opposite directions, the fixed leg 52 of handle 5 passes first through hole 241 of stator 24 and first fixing hole 211 of excessive ladder 2, latch 53 passes second fixing hole 13 of Convenient table pipe 11, with interlocking fixed ladder 1 and excessive ladder 2.Slip lift 3 is to adjust the yi shaped ladder height: as shown in figure 18, when lift 3 upwards slides, pedal 32 backs down plectrum 16, after plectrum 16 turns to maximum angle, pedal 32 will drive locking plate 15 by plectrum 16 and outwards rotate butting section 153 activity in fixed ladder 1 that makes a little, rises lift 3 for the user; Or as shown in figure 19, when when lift 3 upwards slides, pedal 32 withstands on the inclined-plane 154 of locking plate 15, and pedal 32 will drive locking plate 15 and outwards rotate butting section 153 activity in fixed ladder 1 that makes a little, rises lift 3 for the user; In the time of lower slider, need the user manually outwards to rotate locking plate 15 and rise lift 3 for the user; Adjust lift 3 and excessively behind the relative position of ladder 2, as shown in figure 17, draw-in groove 151 clampings of locking plate 15 also are resisted against the pedal 12 of fixed ladder 1, and butting section 153 stretches out in fixed ladder 1 simultaneously; Lift 3 pedals 32 bottom surfaces location against the butting section 153 against the plane 155, to prevent that lift 3 is to lower slider.Plectrum 16 falls and seals this draw-in groove 151 naturally then.
Embodiment two
Present embodiment and embodiment one difference are: as shown in figure 20, described Convenient table pipe 11 level cross-sectionns become class R font; Described excessive leg pipe 21 structures are identical with Convenient table pipe 11 structures, and the level cross-sectionn also is a class R font, and the openend of the excessive leg pipe 21 of this R font becomes chute 23; 31 one-tenth class square shapes of described lifting leg pipe, 31 one-tenth slide rails of this lifting leg pipe.Lifting leg pipe 31 is slidingly connected in the chute 23.
Embodiment three
Present embodiment and embodiment one difference are: as shown in figure 21, described Convenient table pipe 11 level cross-sectionns become square shape; Described excessive leg pipe 21 level cross-sectionns comprise mouthful word portion and U word portion, and wherein the side of mouthful word portion's side and U word portion overlaps, and the inside reducing of this U word portion opening is so that become chute 23 in this U word portion; 31 one-tenth class square shapes of described lifting leg pipe, 31 one-tenth slide rails of this lifting leg pipe.Lifting leg pipe 31 is slidingly connected in the chute 23.
Embodiment four
Present embodiment and embodiment one difference are: as shown in figure 22, described Convenient table pipe 11 level cross-sectionns become square shape; Described excessive leg pipe 21 level cross-sectionns comprise mouthful word portion and U word portion, and wherein the side of mouthful word portion's side and U word portion overlaps, and the inside reducing of this U word portion opening is so that become chute 23 in this U word portion; Described lifting leg pipe 31 level cross-sectionns comprise mouthful a word portion and a reverse U-shaped section, and wherein the side of mouthful word portion's side and reverse U-shaped section overlaps, and the reducing of reverse U-shaped section opening part is so that reverse U-shaped section becomes guide rail 33.Guide rail 33 is slidingly connected in the chute 23.
Embodiment five
Present embodiment and embodiment one difference are: as shown in figure 23, described Convenient table pipe 11 level cross-sectionns become side U font.Described excessive leg pipe 21 level cross-sectionns comprise mouthful a word portion and a reverse U-shaped section, and wherein the side of mouthful word portion's side and reverse U-shaped section overlaps, and the inside reducing of this reverse U-shaped section opening is so that become chute 23 in this reverse U-shaped section; The mouth word portion of the side U font of Convenient table pipe 11 and excessive leg pipe 21 is complementary, and the mouth word portion of excessive leg pipe 21 is positioned at the side U font of Convenient table pipe 11 when amounting to into yi shaped ladder.Described lifting leg pipe 31 level cross-sectionns become side L font, and the short portion of L font lifting leg pipe 31 becomes guide rail 33.Guide rail 33 is slidingly connected in the chute 23.
Embodiment six
Present embodiment and embodiment one difference are: as shown in figure 24, described Convenient table pipe 11 level cross-sectionns become square shape.Described excessive leg pipe 21 level cross-sectionns comprise side U portion, mouthful word portion and U word portion, wherein the limit, left side of side U portion right edge and mouthful word portion overlaps, mouth word portion's right edge and limit, U word portion left side overlap, and the inside reducing of this U word portion opening is so that become chute 23 in this U word portion; The right part of Convenient table pipe 11 is matched with the side U portion of excessive leg pipe 21.Described lifting leg pipe 31 level cross-sectionns comprise mouthful a word portion and a reverse U-shaped section, and wherein the side of mouthful word portion's side and reverse U-shaped section overlaps, and the reducing of reverse U-shaped section opening part is so that reverse U-shaped section becomes guide rail 33.Guide rail 33 is slidingly connected in the chute 23.
Embodiment seven
Present embodiment and embodiment one difference are: as shown in figure 25, described Convenient table pipe 11 level cross-sectionns become side L font.Described excessive leg pipe 21 level cross-sectionns also become side L font, and excessively the inside reducing of leg pipe 21 side L font minor faces forms chute 23.Described lifting leg pipe 31 level cross-sectionns also become side L font, lifting leg pipe 31 side L fonts and excessively leg pipe 21 side L fonts in opposite directions, these lifting leg pipe 31 side L font minor faces become guide rail 33.Guide rail 33 is slidingly connected in the chute 23.
Embodiment eight
Present embodiment and embodiment one difference are: shown in Figure 26,27,28,29, described two Convenient table pipes 11 do not be arranged in parallel, and the spacing between this two Convenient tables pipe 11 is up-small and down-big, to increase stability.
The above, only for preferred embodiment of the present invention, so can not limit scope of the invention process with this, i.e. the equivalence of doing according to the present patent application claim and description changes and modification, all should still belong in the scope that patent of the present invention contains.
Claims (8)
1. liftable double ladder is characterized in that: comprise fixed ladder, excessively ladder, lift and lock connector, fixed ladder upper end and excessively constituting between the ladder upper end is rotatably connected, lift and excessively between the ladder formation can slide up and down connection; Wherein, the expansible location is to form double ladder or to amount to the location to form yi shaped ladder between fixed ladder and the excessive ladder, and lift is relatively excessively terraced to slide so that its top ends stretches out in excessive terraced top and makes its bottom stretch out in excessive terraced bottom;
Be provided with positioner between described fixed ladder and the excessive ladder, it comprises first connector and second connector, one end of first connector is articulated in fixed ladder, and an end of second connector is articulated in excessive ladder, and the other end of the other end of first connector and second connector is articulated and connected;
Described lock connector, it can the interlocking lift and the excessive relative position between the ladder, can the interlocking fixed ladder, lift and the excessive relative position between the ladder.
2. a kind of liftable double ladder according to claim 1, it is characterized in that: described lock connector comprises that several are arranged above and below and evenly the compartment of terrain is opened in lift lift span, is opened in first fixing hole and a handle of excessive ladder, this handle a certain lift span of interlocking and first fixing hole.
3. a kind of liftable double ladder according to claim 1 is characterized in that: described lock connector comprises a locking plate and a plectrum, and the locking plate upper side offers the draw-in groove that is matched with the fixed ladder pedal, and this draw-in groove bottom stretches out into the butting section; Wherein, the locking plate bottom is rotationally connected with fixed ladder, and the draw-in groove of locking plate is connected in the fixed ladder pedal and the butting section stretches out in fixed ladder, and when amounting to into yi shaped ladder, lift pedal bottom surface is located against the butting section.
4. a kind of liftable double ladder according to claim 3 is characterized in that: described lock connector comprises that also first fixing hole, that several are arranged above and below and evenly the compartment of terrain is opened in lift lift span, is opened in excessive ladder is opened in second fixing hole and a handle of fixed ladder; Wherein, this handle can be selected a certain lift span of interlocking and first fixing hole or interlocking first fixing hole and second fixing hole.
5. a kind of liftable double ladder according to claim 4 is characterized in that: described second fixing hole offer the pedal position of position corresponding to fixed ladder; Each lift span offer the corresponding pedal position that the position corresponds respectively to lift.
6. a kind of liftable double ladder according to claim 1 is characterized in that: the 1/4-1/2 that described excessive terraced length is fixed ladder length, lift length is the 1/2-1 of fixed ladder length.
7. a kind of liftable double ladder according to claim 1 is characterized in that: offer chute on the described excessive ladder, lift is slidingly connected to chute.
8. a kind of liftable double ladder according to claim 1 is characterized in that: offer the storage tank that is matched with the fixed ladder sidepiece on the side that is close to fixed ladder of described excessive ladder.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610069944A CN101173597B (en) | 2006-11-01 | 2006-11-01 | Liftable V-ladder |
| PCT/CN2007/003095 WO2008052438A1 (en) | 2006-11-01 | 2007-10-31 | A stepladder capable of lifting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610069944A CN101173597B (en) | 2006-11-01 | 2006-11-01 | Liftable V-ladder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101173597A CN101173597A (en) | 2008-05-07 |
| CN101173597B true CN101173597B (en) | 2010-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610069944A Active CN101173597B (en) | 2006-11-01 | 2006-11-01 | Liftable V-ladder |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101173597B (en) |
| WO (1) | WO2008052438A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359345A (en) * | 2011-07-29 | 2012-02-22 | 苏州展华纺织有限公司 | Novel herringbone ladder |
| CA3186078A1 (en) * | 2014-11-04 | 2016-05-12 | Little Giant Ladder Systems, Llc | Extension ladder, ladder components and related methods |
| CN106014178B (en) * | 2016-07-01 | 2017-08-25 | 湖州好山好水园林工程有限公司 | A kind of safe ladder of garden maintenance |
| CN106948749A (en) * | 2017-05-16 | 2017-07-14 | 国网浙江仙居县供电公司 | A kind of insulating ladder |
| CN108528752B (en) * | 2018-06-04 | 2023-08-18 | 四川航泰航空装备有限公司 | General rear cabin working ladder |
| USD966556S1 (en) | 2019-12-13 | 2022-10-11 | Murphy Ladder Llc | Ladder |
| CN112576178A (en) * | 2020-12-08 | 2021-03-30 | 北京天缘安海园林绿化有限公司 | Garden climbing device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2619037Y (en) * | 2003-06-05 | 2004-06-02 | 叶进文 | Telescopic adjustable folding ladder |
| CN2632283Y (en) * | 2003-07-16 | 2004-08-11 | 苏州市中创铝业有限公司 | Multifunctional ladder |
| CN1707063A (en) * | 2004-06-10 | 2005-12-14 | 阿禄因康株式会社 | Extension ladder |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2326665B (en) * | 1997-02-28 | 2001-06-20 | Abru Ltd | A variable configuration stepladder |
| GB2400397B (en) * | 2003-04-10 | 2006-04-05 | Sgb Services Ltd | Improvements in or relating to a ladder |
| CN2622373Y (en) * | 2003-04-17 | 2004-06-30 | 陈经雄 | Telescopic ladder |
| CN2823519Y (en) * | 2006-01-23 | 2006-10-04 | 杨洪建 | Telescopic folding v-ladder |
-
2006
- 2006-11-01 CN CN200610069944A patent/CN101173597B/en active Active
-
2007
- 2007-10-31 WO PCT/CN2007/003095 patent/WO2008052438A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2619037Y (en) * | 2003-06-05 | 2004-06-02 | 叶进文 | Telescopic adjustable folding ladder |
| CN2632283Y (en) * | 2003-07-16 | 2004-08-11 | 苏州市中创铝业有限公司 | Multifunctional ladder |
| CN1707063A (en) * | 2004-06-10 | 2005-12-14 | 阿禄因康株式会社 | Extension ladder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101173597A (en) | 2008-05-07 |
| WO2008052438A1 (en) | 2008-05-08 |
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