CN107461144A - Ladder support device and the method for ladder to be fastened to base - Google Patents

Abstract

The present invention relates to a kind of ladder support device and a kind of method for being used to for ladder to be fastened to base.Ladder support device includes main body, can be attached to main body and by the insert being pushed into base and the supporting part for the stop part for being configured to ladder.Method for ladder to be fastened to base includes：Ladder support device is provided；Insert is attached to main body and insert is pushed into base；The foot of ladder of ladder is arranged into ladder support device so that supporting part serves as the stop part for foot of ladder.

Description

Ladder support device and the method for ladder to be fastened to base

Technical field

Present invention relates in general to ladder support and fastener, for ladder, scaffold and analog.More specifically, Method the present invention relates to ladder support device and for ladder to be fastened to base, base is, for example, ground or ladder may The smooth surface easily slid on.

Background technology

Consumer Product Safety Commission (CPSC) is on the ladder of the frequency of ladder related accidents and seriousness safety in the U.S. Report display, incredible amount is injured as caused by ladder accident.Annual to have thousands injured, hundreds of people is dead.For example, have every year Receive emergency ward treatment due to the related injury of ladder more than 90,000 people, and cause the professional death toll of nearly 700 every year, This accounts for dead 15% of all occupations.Even if with ladder technological progress, so as to seem to make user safer, but in mistake Go in 10 years, the quantity of the related injury of ladder adds 50%.

Many injuries are due to that ladder pin is slided and occurred on the surface residing for them.Many ladders are developed Pin, to increase the friction between ladder and surface (such as cement, pitch, concrete, meadow, soil etc.) residing for the ladder Amount.

Ladder support device is generally known in the art.For example, Michnik et al. United States Patent (USP) No. 8042651 teach a kind of Portable ladder support meanss for being used to support ladder, and the ladder has to be connected by crosspiece spaced apart Two side rails connect.Portable ladder support meanss include at least one gripping member, multiple support components and framework, framework Including fixed mechanism, relieving mechanism, for guiding multiple guiding pieces of the support component along the motion of desired trajectory and being used for The ladder support region for being temporarily positioned on ladder by the bottom of two side rails, it is every in plurality of support component One is longitudinal.However, the Portable ladder support meanss and similar other devices are excessively complicated, and still may be susceptible to Slide.

Simpler known ladder support device includes change pin for stability and two ends, and change tape has The projection of the ice axe shape protruded from the bottom of pin.Other devices, such as the U.S. Patent Publication No. 5086876A in Severson Described in a device, describe a kind of foot for being used for the stable ladder with side rail and actuate ladder support, it passes through Increase ladder base widths to operate.Foot, which actuates ladder support, includes the foot connecting rod with inner and outer end passage shape, The inner is pivotably connected to the bottom of one of ladder side rail, to be folded and to lower swing along side rail, with along ladder Base extends and widens ladder base portion.Although this method stabilizes ladder, the floor space of ladder is that it increases simultaneously Bigger space is needed, this is undesirable.In addition, in some cases, ladder fully can not be fastened to bottom by this method Seat.

Therefore, it is necessary to which a kind of ladder support device ensures that ladder is insufficiently secured to base, i.e., for soft mutability Surface and the single assembly of hard surface.A kind of in addition, it is necessary to effective ways for being used to for ladder to be fastened to base.

The content of the invention

In order to realize foregoing and other aspects and according to the purpose of the present invention, this paper presents ladder support device with And the method for ladder to be fastened to base.Ladder support device is compact, and can be folded in certain embodiments In order to transport.

In one aspect, there is provided a kind of ladder support device, it includes：Main body；Insert, it can be attached to main body And it will be pushed into base；And supporting part, it is configured to the stop part of ladder.

In other embodiments, insert may include the staple with one or more leg pieces.Supporting part can include A part for insert.Main body can include platform and one or more side walls from platform extension.Supporting part can include A part for platform and/or a part for side wall.Grasping section can be arranged on the top of platform to serve as supporting part.Separately Outside, handle can be set at main body.Supporting part can include a part for handle.

In still other embodiments, can bracket be set at main body to remain inserted into part.Main body can include projection Part, it is applied to one or more holes of rung connector with size.Connecting elements can be arranged at main body, with Ladder support device is connected to ladder.Connecting elements may include to be operatively engaged to the end of arm to allow to pivot or circular The bearing of rotation, the other end of arm are operatively engaged to ladder to allow pivot or circular rotating.Arm can include being located at it Bearing near center section, to allow arm to extend and fold.

In operation, the insert for being attached to the main body of device is pushed into base, such as user's environment Numerous objects of a part, such as meadow or concrete bed, and therefore ladder support device will be not easy to slide on base. Further, since main body (i.e. platform or side wall) or a part for insert are used as being used for the ladder being arranged into ladder support device Stop part, thus ladder also will not be slided easily on device.As a result, slip of the ladder relative to base can be prevented, and And the safety and stability of ladder can be improved.

On the other hand, there is provided a kind of method for ladder to be fastened to base, including：Ladder as described above is provided Sub- support meanss；Insert is attached to main body and insert is pushed into base；And the foot of ladder of ladder is arranged into ladder In support meanss so that supporting part serves as the stop part for foot of ladder.

In other embodiments, handle can be provided at main body, and this method may also include ladder bolt by band It is tightened to handle.Main body can include bossing, and it is applied to one or more holes of rung connector with size, and And this method can also include the crosspiece of ladder is attached into main body by rung connector.In addition, ladder support device It may include the connecting elements that ladder is connected to via arm, one end of arm is operatively engaged to connecting elements, and the other end of arm Ladder is operatively engaged to, to allow pivot or circular rotating, and this method may include ladder branch after usage Support arrangement is folded into ladder.

From the following detailed description that should be read in conjunction with the figure, further feature of the invention, advantage and aspect will become more Add obvious and easier to understand.

Brief description of the drawings

The foregoing aspect and further feature of the present invention is shown by example rather than in restrictive manner in the accompanying drawings, its Middle identical reference represents similar element, and wherein：

Fig. 1 shows the perspective view of ladder support device according to an embodiment of the invention；

Fig. 2 shows that Fig. 1 ladder support device is in the perspective view of its earthing position；

Fig. 3 shows Fig. 1 perspective view of the ladder support device together with the ladder supported by the device；

Fig. 4 shows the upward view of Fig. 1 ladder support device；

Fig. 5 shows the perspective view of ladder support device according to another embodiment of the present invention；

Fig. 6 shows that Fig. 5 ladder support device is in the side view of its earthing position；

Fig. 7 shows Fig. 5 perspective view of the ladder support device together with the ladder supported by the device；And

Fig. 8 shows Fig. 5 perspective view of the ladder support device together with ladder, and wherein ladder support device is folded to ladder In.

Unless otherwise indicated, the diagram in these figures is not drawn necessarily to scale.

Reference：

100：Ladder support device

102、104：Staple

106、108：Leg piece

110：Platform

118、120、122：Hole

124：Jut

126、128、130、132：Side wall

134、136：Handle

140：Connecting elements

142、205、222：Bearing

150、152：Grasp section

154：Central handle

160：Basal surface

162：Grab ground tyre surface

164：Grab ground tyre surface

200：Ladder

202、204：Buckle

206：Pin

208：Folding direction

210：Vertical direction

212：Terraced leg

214：Side rail

216：Step (crosspiece)

220：Ladder connecting elements

300：Base

402、404：Arm.

Embodiment

By reference to drawings in detail set forth herein and description, the present invention is best understood.

Below with reference to the accompanying drawings embodiments of the invention are discussed.However, those skilled in the art will readily appreciate that, close herein Explanatory purpose is only used in the detailed description that these figures provide, because present invention extension exceeds these limited embodiments.Example Such as it should be appreciated that according to the teachings of the present invention, those skilled in the art will recognize a variety of replace according to the needs of application-specific Generation and suitable method realize the function of any given details described herein, beyond described and illustrated following examples In specific implementation mode select.That is, exist the present invention numerous modifications and variations, these modifications and variations too much with As for can not list, but it is within.In addition, in appropriate circumstances, odd number word should be read as multiple Number, vice versa, and the positive can also be read as feminine gender, and vice versa, and alternate embodiment is not necessarily mean that both are mutual Repel.

It is further understood that the invention is not restricted to ad hoc approach described herein, compound, material, manufacturing technology, Purposes and application, because these may change.It will also be understood that term as used herein is only used for describing the mesh of specific embodiment , and be not intended to limit the scope of the present invention.It has to be noticed that as used in this paper and appended claims, odd number shape Formula " one ", "one" and "the" include plural, unless the context clearly indicates otherwise.Thus, for example, to " element " Reference be reference to one or more elements, and including equivalent well known by persons skilled in the art.Similarly, for Another example, the reference to " step " or " device " are the references to one or more steps or device, and can With including sub-step and slave unit.All conjunctions for using should all be understood with most inclusive implication.Therefore, word "or" is appreciated that the definition with logical "or", rather than the definition of logical exclusive-OR, unless context is clearly another Require.Structure described herein is interpreted as being also refer to the functional equivalent of this structure.It can be interpreted that expression is approximate Language should be so understood, unless the context clearly determines otherwise.

Unless otherwise defined, all technologies used herein and scientific terminology have and common skill of the art The identical implication that art personnel are generally understood that.Describe preferable method, technology, device and material, but with it is as described herein Those similar or equivalent any method, technology, device or materials can be used in the practice or test of the present invention.It is described herein Structure it will be also be appreciated that referring to the functional equivalent of this structure.Come referring now to the embodiment shown in accompanying drawing detailed The ground description present invention.

Referring now to Figure 1, ladder support device is generally shown with 100.Ladder support device 100 includes the He of platform 110 Multiple side walls 126,128,130 and 132, these side walls upwardly extend from platform 110 and are connected to platform with approximate right angle 110.Platform and side wall can be collectively referred to herein as the main body of device.In this view, ladder support device 100 is included substantially The nail 102 and 104 of U-shaped.Staple 102 and 104 includes leg piece.In the figure it can be seen that being arranged on the leg piece at 106 and 108, And other equal leg pieces are cannot see that in this view, because they are hidden in observation path by platform 110.These leg pieces Their end towards base can be provided with sharp shaped material, to be easily inserted into base.Platform 110 is included at least Four holes 112,114,116 and 117, it is sized to receive leg piece 106,108.This can pass through wing nut or other screws Realized with nut construction, can also by being clasped, frictional fit, realize by press-fit etc..Due to easily disassembled, leg piece It is based on will can be changed the type on the ground of ladder support device is set above.As an example, if ground is Soft soil or meadow, then user will select the type of leg piece with sharp shaped material and preferably with thick size.However, such as Fruit ground is concrete or cement, then the leg piece of the much thinner of no sharp shaped material is preferably as user is only needed in energy Small drill bit bore is made in the enough cement or concrete easily sealed.In an alternate embodiment of the invention, platform 110 can be by all Such as metal or aluminium or the solid substrate of duroplasts formation.

Platform 110 may additionally include the grasping section 150 and 152 on the upper surface of platform 100, be sized for keeping The foot of ladder of ladder.Grasping section 150,152 may include rubbery section or paper or piece of cloth, and it has bonding in side Agent, there is the surface similar to fine sandpaper in opposite side.Grasping section 150 and 152 allows the pin of ladder to securely adhere to base The surface at bottom 110.

The side wall 128 and 130 relative with two of ladder support device 100 is integrally formed handle 134 and 136 respectively, And these side walls are extended beyond, as shown in the figure.In other embodiments, handle is detachably secured to side wall, and One or more handles can be arranged on single side-walls, such as at side wall 130.Handle 134 and 136 is used to perform a variety of work( Energy.For example, they can cause ladder support device 100 to be easier to carry.In addition, they can be served as attachment members Basis, attachment members are, for example, the band or rope (not shown) to ladder., should although the handle of U-shaped is illustrated herein Understand, handle can use many other shapes (such as V-arrangement, J-shaped).Other center push handle 154 is arranged adjacent to fill 100 long guardrail is put, and is configured as allowing user to be pushed into and pull out surface by device using single hand.Center push handle 154 are connected to the core of side wall 130 core of side wall 128.

In the alternative embodiment of the present invention, ladder support device 100 includes the bossing 124 on platform 110.It is raised Part 124 extends above the platform 110 of adjacent sidewall 128, and with the height identical with side wall 128 highly.At it In its embodiment, the height of bossing 124 can be more than or less than the height of side wall 128.One or more bossings can To be arranged near other side walls 126,130 and 132, or two side walls even in side wall 126,128,130 and 132 Between platform 110 center section on.In addition, bossing 124 can be simply side wall 128 in the thickness direction thereof Extension.Due to relatively large thickness, bossing 124 can be used as side wall when side wall 128 serves as the supporting member for ladder 128 backing, and support section is referred to alternatively as herein.In addition, side wall 126,128,130 and 132 could be formed with from The rib that its inner surface or outer surface protrude, to provide extra support.When ladder support device is in certain angle, the supporting Part is particularly useful so that ladder pin should provide stability against surface for pin.Under normal handling conditions, by In grasping section 150 and 152, foot of ladder need not be against support section.

If bossing 124 is shown as including dry hole 118,120 and 122 formed therein.Hole 118,120 and 122 It is dimensioned to be used for rung connector, it is used to rung being connected to ladder support device.

In operation, side wall 128 and/or 130 will serve as the supporting member of ladder pin, to provide the firm connection to ground And any and all slip that may occur is avoided, so as to prevent the injury with high degree of certainty.

According to another embodiment of the invention, ladder support device 100 can not be included from the (more of platform extension It is individual) side wall.That is, the embodiment shown in Fig. 1 omits side wall 126,128,130 and 132.Equally, can also omit Handle 134,136 and bossing 124.By this way, resulting ladder support device will include platform and have energy attached It is connected to the staple of the leg piece of platform.Platform is formed with the hole for receiving leg piece.In operation, leg piece is attached through hole To platform, wherein one end extends upwardly beyond platform, and the other end extends downward beyond platform.Extend downward beyond the one of platform Section leg piece will be pushed into the base on such as meadow or concrete bed, and another section of leg piece for extending upwardly beyond platform will fill When the supporting member of ladder pin.Preferably, two leg pieces are attached to the side of platform, and the gap between two of which leg piece is less than ladder The diameter of sub- pin, to provide firm and stable support.The length for extending upwardly beyond the leg piece of platform can be by by leg Part is screwed into the hole being formed in platform to adjust, and can use the leg piece with various length.Therefore, ladder support Device can be shelved on numerous objects as a part for user's environment, and can also be made together with various ladders With.In addition, when without being used to abut the side wall or leg piece of ladder pin, handle 134,136 can serve as the support member of ladder pin.

Fig. 2 shows that Fig. 1 ladder support device is in the perspective view of its earthing position, it is shown that ladder support device is such as What is installed in ground.Leg piece can not be seen, because they have been pushed into ground.It is soft soil or meadow on ground In the case of, the leg piece of device simply can be pushed into ground by user with the power of minimum, particularly when sharp shaped material is set When being placed on the end of leg piece.Or in concrete or hard ground, user can simply drill out aperture in ground And the leg piece of device is slipped into the hole.Once nail 102 and 104 is inserted into ground, ladder support device 100 will be prevented from Slided on ground.In certain embodiments, platform 110 can also grab ground tyre surface on its bottom side including elastomer so that when , will hair between ground and platform when the whole length of leg piece is pushed into ground and the bottom side of platform directly contacts with ground Raw significant friction, so as to further stable ladder support meanss and prevents its slip.Grab ground tyre surface in Fig. 4 generally with 162 and 164 show.

Referring now to Figure 4, show the upward view of Fig. 1 ladder support device 100.It can be seen that leg piece 106 and 108 Basal surface 160 is projected through, and packing ring and nut can be seen in its tension position.Grabbing ground tyre surface 162 and 164 can be Its bottom side is affixed to the bottom of device 100 so that in an alternate embodiment of the invention, due to significantly rubbing between ground and platform 100 Wipe and no longer need staple, Simultaneous Stabilization ladder support device simultaneously prevents its slip.

Referring still to Fig. 2, ladder support device 100 can also include bracket, it include be used for receive and keep staple and The buckle 202 and 204 of rung connector.Bracket buckle can be with platform 110 or side wall 126,128,130 and 132 1 These components are manufactured or be detachably fixed to body, and friction is provided or is clasped.

Fig. 3 is gone to, shows Fig. 1 perspective view of the ladder support device together with the ladder supported by the device.Ladder is big Shown on body at 200, including two longitudinal side rails 214 and multiple horizontal bench for being connected between side rail 214,214 (crosspiece) 216.Ladder 200 also include close to the top of side rail 214 so that user stands in top platform thereon and It is pivotally connected to the center rest of top platform and side rail.Moreover, one or more flexible ropes are connected to stable branch Frame and side rail, to limit the maximum angle between them, under preventing that the user on top platform from undergoing suddenly Fall.In operation, after the leg piece of ladder support device is pushed into ground, the foot of ladder 212 of ladder 200 is arranged to ladder In support meanss, such as into the space by the encirclement of side wall 126,128,130 and 132 as shown in Figure 1 and in grip portion On 150 and 152 top.In certain embodiments, foot of ladder 212 abuts a side wall, and is prevented from the side towards side wall Slided upwards on the platform of ladder support device.In other embodiments, foot of ladder is simply resting on grasping part 150 and 152 High friction surface on.According to the actual needs, two foot of ladders 212 of ladder 200 can be arranged into single ladder support device In, or into two separated ladder support devices.

In the wherein embodiment for the supporting member that staple 102 and 104 rather than side wall serve as ladder pin, as described above, After leg piece is partially pushed into ground, ladder pin is disposed on the platform of ladder support device and super against upwardly extending Go out one section of leg piece of platform.Band can be used for ladder pin bolt being tightened to this section of leg piece, to provide further fixation.Wherein Handle is arranged in the other embodiment of platform or side-walls, can also use bring ladder pin bolt be tightened to handle.

Referring now to Figure 5, show ladder support device 100 according to another embodiment of the present invention.Ladder support fills Putting 100 includes all parts of the ladder support device shown by Fig. 1, and comprises additionally in for being attached to ladder such as ladder Two side rails one or more connecting elements 140.As illustrated, two connecting elements 140 are positioned adjacent to side wall 128 The top of platform 110 bossing 124 at.In other embodiments, one or more connecting elements may be provided at side wall 126th, at 128,130 or 132, or even at handle 134 or 136.Connecting elements 140 can include bearing 142, the bearing It is constructed to be permeable to be connected to arm 402 and 404, to provide the energy being folded up ladder support device 100 in ladder 200 Power.Alternatively, connecting elements 140 can simply include the band that can be removedly suspended on the hook being arranged at ladder Button or becket bridle.Arm can include being used to be coupled to the ring of ladder 200 or the ring of side rail or hook.

Fig. 6 shows that Fig. 5 ladder support device is in the side view of its earthing position, wherein the leg of device by It is pushed into base, and Fig. 7 shows perspective view of the ladder support device together with the ladder supported by the device.As shown in fig. 6, The bearing 142 of connecting elements 140 is operatively engaged to arm 402 in its first end, so as to provide pivot or circular rotating.With this Kind mode, arm 402 can surround the axle that limited by the line for connecting two bearings 142 (referring to Fig. 7) relative to ladder support device 100 Line rotates freely through.The side rail 214 of ladder 200 is additionally provided with the ladder connecting elements 220 including bearing 222, and bearing 222 is at it Second end is operatively engaged to arm 402, to provide pivot or circular rotating.By this way, arm 402 can be relative to ladder Both son 200 and ladder support device 100 rotation so that ladder support device 100 can be after usage for example along 208 institutes The direction shown is folded into ladder 200.Arm 402 can be contained in the space being defined between front side wall 130 and rear wall 128 It is interior.In other embodiments, one or two in bearing 142 and 222 can be arranged on the end of arm 402, as long as desired Pivot or circular rotating is feasible.

In operation, side rail 214 of the arm 402 along ladder 200 is discharged from its folding position so that arm 402 is permitted Perhaps rotating freely relative to ladder 200, and ladder support device is also allowed to rotating freely relative to arm 402.Then, The foot of ladder 212 of ladder 200 is arranged into ladder support device 100 so that its abut side wall 126 shown in Fig. 1,128, One in 130 and 132, or extend upwardly beyond one section of leg piece of platform 110.Afterwards, the leg of ladder support device 100 Part is pushed on the vertical direction shown in 210 in the base 300 on such as meadow or concrete bed.By this way, with side Ladder pin 212, the bearing 142 and 222 of the engagement of wall 130 form stable triangular form, and therefore ladder 200, ladder support Device 100 and arm 402 can not be moved relative to each other.Further, since ladder support device 100 is firm via multiple leg pieces Ground is fastened to base 300, so ladder 200, ladder support device 100 and arm 402 can not be easily in bases as entirety Moved on 300.In other embodiments, there is provided locking mechanism with arm 402 is maintained to as shown in Figure 5 orientation in.For example, pivot Pivot pin can extend across bearing 222 and/or 142 and be engaged with arm 402.In addition, support or locking mechanism can further be set It is set to along ladder side rail 214 and device 100 is maintained at its folding position.

Arm 402 may include the bearing 205 positioned close to the center section of arm 402 in itself.Bearing 205 is configured to allow for arm 402 laterally extend and fold, so that the outwardly biased and also corresponding of realization device 100 is biased inwardly after power applies Put.Can be the connecting rod of channel shape at one section of the arm 402 on the side of the bearing 205 of ladder support device 100, and And another section of the arm 402 on the opposite side of bearing 205 can be the connecting rod of less channel shape, it adapts to previous company In bar.When being aligned in straight line for this two sections of arm 402, pin 206 can pass through bearing 205 and be engaged with this two sections.Thus, arm 402 are locked in orientation as shown in Figure 5.In other embodiments, bearing 142,205 and 222 can be provided with cam surface And one-way stop part is effectively functioned as predetermined point.Arm 402 can be the extensible member for including two parts, one of them Part is pivotally coupled with ladder support device 100, and another part is pivotally coupled with ladder 200.Due to flexible spy Sign, the angle between the side rail 214 of ladder 200 and the surface of base is adjustable.Once angle is adjusted to desired Value, pin can run transverse through two parts so that they can not be moved relative to each other, and ladder is maintained at expectation Orientation.

In the figure 7, for the purpose of orientation, it is shown that arm 402 is together with connecting elements, and is connected to side rail Only one arm 402.Although two foot of ladders 212 of the side rail 214 of ladder 200 are shown as being arranged into single ladder branch In support arrangement 100, but it is to be understood that in other embodiments, two pin 212 can be arranged into two separated ladder supports In device 100.

Fig. 8 is gone to, ladder support device 100 is shown at its folded state, i.e., in ungrounded position.Ladder support Device 100, which is adjacent to, is secured to ladder side rail 214, close to the step (crosspiece) being connected between side rail 214,214 206, to allow readily transport.For orientation purposes, arm 402 is sightless, because they have been folded in device Behind 100 and enter in device 100, and hidden by ladder side rail 214.

It can be included according to the method for being used to ladder being fastened to base of the present invention：Ladder support as described above is provided Device；The leg piece followed closely is promoted to pass through the hole (that is, the platform or side wall of device) in main body；Leg piece is pushed into base；And will The foot of ladder of ladder is arranged into ladder support device so that extends beyond the side wall of platform or one section of leg piece is used as foot of ladder Stop part.Although by it is exemplary progressively in a manner of describe this method, but it is to be understood that those skilled in the art can tie up Rearrange or resequence while holding similar results this method the step of.

When user is intended to move ladder 200 after usage, he/her can lift foot of ladder in vertical direction 210 212 leave base 300.Hereafter, user can use minimum power that the leg piece of ladder support device 100 is pulled out into base 300, and And finally device 100 is folded up in ladder 200 as shown in arrow 208 (with reference to figure 6) in the case of using arm 402.

Although the combined the most practical and preferred embodiment that are presently believed to be describe the present invention, should manage Solution, the invention is not restricted to these embodiment disclosed hereins.On the contrary, it is contemplated that cover the essence for being included in appended claims God and all various modifications in scope and equivalent arrangements.

Although the specific features of various embodiments of the present invention may be in some of the figures without showing in other figures, this It is merely for convenience.According to the principle of the present invention, (multiple) feature of an accompanying drawing can with it is any in any other accompanying drawing Or all combinations of features.As used herein word " comprising ", "comprising", " having " and " carrying " will be by broadly and comprehensively Ground is explained, and is not limited to any physical interconnections.In addition, any embodiment disclosed herein be not necessarily to be construed as it is only possible Embodiment.On the contrary, modification and other embodiment are intended to be included in scope of the following claims.

Claims (17)

1. a kind of ladder support device, including：

Main body；

Insert, it can be attached to the main body and its and will be pushed into base；With

Supporting part, it is configured to the stop part of ladder.

2. ladder support device according to claim 1, it is characterised in that the insert includes having one or more The staple of leg piece.

3. ladder support device according to claim 1, it is characterised in that the supporting part includes the insert A part.

4. ladder support device according to claim 1, it is characterised in that the main body includes platform and from the platform One or more side walls of extension.

5. ladder support device according to claim 4, it is characterised in that the supporting part includes the one of the platform Part and/or a part for the side wall.

6. ladder support device according to claim 4, it is characterised in that grasping is provided with the top of the platform Section is to serve as the supporting part.

7. ladder support device according to claim 1, it is characterised in that be provided with handle at the main body.

8. ladder support device according to claim 7, it is characterised in that the supporting part includes the one of the handle Part.

9. the ladder support device according to any one of claim 1 to 8, it is characterised in that set at the main body Bracket is equipped with, to keep the insert.

10. the ladder support device according to any one of claim 1 to 8, it is characterised in that the main body includes convex Part is played, it is applied to one or more holes of rung connector with size.

11. the ladder support device according to any one of claim 1 to 8, it is characterised in that set at the main body Connecting elements is equipped with, the ladder support device is connected to the ladder.

12. ladder support device according to claim 11, it is characterised in that the connecting elements includes operationally connecing One end of arm is closed to allow to pivot or the bearing of circular rotating, the other end of the arm be operatively engaged to the ladder with Allow pivot or circular rotating.

13. ladder support device according to claim 12, it is characterised in that the arm is attached including being located therein a part Near bearing, to allow the arm to extend and fold.

14. a kind of method for ladder to be fastened to base, including：

Ladder support device according to any one of claim 1 to 13 is provided；

The insert is attached to the main body and the insert is pushed into the base；

The foot of ladder of the ladder is arranged into the ladder support device so that the supporting part is served as the foot of ladder Stop part.

15. the method according to claim 14 for ladder to be fastened to base, it is characterised in that at the main body Handle is provided with, and wherein methods described also includes the ladder bolt is tightened into the handle by band.

16. the method according to claim 14 for ladder to be fastened to base, it is characterised in that the main body includes Bossing, it is applied to one or more holes of rung connector with size, and wherein methods described also includes The crosspiece of the ladder is attached to the main body by the rung connector.

17. the method for ladder to be fastened to base according to any one of claim 14 to 16, wherein described Ladder support device includes being connected to the connecting elements of the ladder via arm, and one end of the arm is operatively engaged to described Connecting elements, and the other end of the arm is operatively engaged to the ladder, to allow pivot or circular rotating, and its Described in method include after use by the ladder support folding device into the ladder.