CN201297027Y

CN201297027Y - Ladder capable of being doubled as scaffold

Info

Publication number: CN201297027Y
Application number: CNU2008201670763U
Authority: CN
Inventors: 王万兴
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-10-29
Filing date: 2008-10-29
Publication date: 2009-08-26
Anticipated expiration: 2018-10-29

Abstract

A ladder capable of being doubled as a scaffold comprises two upright posts (1) and a cross rail (2), connecting components are arranged at the same horizontal parts of the upright posts (1) close to the top end thereof respectively, and connecting components are also arranged at the same horizontal parts of the upright posts (1) close to the bottom end thereof respectively, so that the ladder is divided into an upper part (A), a middle part (B) and a lower part (C), and the connecting components are rotating devices (3) provided with rotating and positioning structures, so that the upright posts (1) at the vertically adjacent parts of the ladder can be relatively rotated and positioned. Compared with the prior art, the ladder provided by the utility model adopts an integral structure, and can be changed into an upright-type ascending ladder, a scaffold or a platform-type working ladder according to the requirements, one ladder can be utilized in a multi-purpose manner, and the ladder realizes the conversion and the positioning of various application states through the rotating devices, the ladder is not needed to be disassembled or repeated assembled in the changing of the application states, the operation of the conversion is simple and convenient, quick and labor-saving and no other components are needed, and all the application, storage, carrying and transportation are convenient and practical.

Description

But a kind of ladder of using as scaffolding

Technical field

The utility model relates to a kind of ladder, but relates in particular to a kind of ascend a height ladder of using as scaffolding of ladder, scaffold and platform-type working stand of vertical type that integrates.

Background technology

Traditional ladder or extension ladder in the market all include two vertical rods and are erected at two crosspieces between the vertical rod, and they can only uprightly use, and the simple function of ascending a height also promptly only is provided.Yet, when ladder during in building, finishing, advertisement, the actual use in home dwelling field, after the user often need ascend a height by ladder, stand in the operation that a certain height and position carries out the long period, and the ladder that can only uprightly use is owing to can't provide a job platform, can not be applicable to this situation preferably, not satisfy the actual needs of ascend operation.At present, double ladder in addition commonly used on the builing industry, though the user can firmly stand by it, in case but double ladder fixed-site, the opereating specification that user's arm can reach is just more limited, and especially the scope that can reach on the lateral attitude is very little, and the user need come back on the ground, behind the mobile double ladder, ascend a height again and carry out operation, bother very much, like this, in actual mechanical process, many users just go out the stretching, extension that human body tilts, so that arm can get at position far away, this just makes people and ladder disequilibrium easily, and the accident that collapses and fall, abnormally dangerous, thereby, no matter be telescopic or non-retractable double ladder, also, all can not well be applicable to the needs of ascend operation as common ladder.

Therefore, some can provide operating platform and the transversely movable ladder of user is come out by utility model, as number of patent application is the Chinese patent application " telescopic ladder and vertical combined ladder, platform stool and double ladder " of 200710057415.2 (notification number is CN101050687A), discloses a kind of ladder with multiple function of use.When this extension ladder need be transformed into the vertical combined ladder use, be to form by the how secondary extension ladder assembling that connects successively, the connection between the adjacent in twos ladder is adopted the spiral connecting axle that is arranged in the vertical rod to be connected with spiral between the hollow pillar stand and is realized; When this extension ladder need be transformed into the use of platform stool, constitute the stool leg by one to multiple secondary extension ladder, adopt the spiral connecting axle to connect between the extension ladder, platform is made of a secondary extension ladder, fixedly connected by link between platform and the stool leg, this link is arranged on as spiral connecting axle in the vertical rod in that extension ladder of platform and an individual components---crossbeam, by crossbeam respectively with platform in the spiral connecting axle with as being connected of hollow vertical rod in that extension ladder of stool leg, thereby being located by connecting at an angle between implementation platform and the stool leg; When this extension ladder need be transformed into the double ladder use, form two secondary terraced legs respectively by one to multiple secondary extension ladder, two secondary terraced leg tops are provided with the hinge member that matches, and, be respectively equipped with pin-and-hole on the two stands leg of hinge member, with the hinge member lock, it is hinged to make two secondary vertical ladders be herringbone by pin.

This shows, the disclosed extension ladder of this patent application, three kinds of user modes wherein, that is: vertical combined ladder, platform stool and double ladder, all be by many pair units extension ladder, and assemble by link (as spiral connecting axle, crossbeam, hinge member) and to form, before assembling, constitute between each unit extension ladder of vertical combined ladder, platform stool and double ladder is to separate and separate, make conversion operations between these three kinds of function of use states, it is more to expend time in, laborsaving inadequately, easy; Also be, in the time of a kind of ladder of user mode will being converted into another kind of user mode, must earlier each pair unit extension ladder dismounting be come, be recovered to and separate and separate reset condition, take out the necessary corresponding link of another kind of user mode again, again by this link each pair unit extension ladder is assembled into another kind of user mode, number of assembling steps is more, and complex operation, tiring; And the pairing link of each user mode has nothing in common with each other, except that the spiral connecting axle can be in column links to each other, all the other all need independent processing and manufacturing, especially be transformed into the necessary crossbeam of platform stool, this just causes product component more, has improved processing cost, and each link is also mixed up easily, lost, be not easy to use, collect, carry transportation, be unsuitable for actual use; Therefore, but this when unassembled the ladder of unit extension ladder using as scaffolding that separate, that switch process is loaded down with trivial details need further improvement.

On the other hand, the disclosed extension ladder of this patent application, the complex structure that is located by connecting, Connection Step trouble, the rigidity that is located by connecting deficiency, firm inadequately.

Summary of the invention

But first technical problem to be solved in the utility model is the ladder that a kind of using as scaffolding of integrative-structure is provided at above-mentioned prior art present situation, the ladder of this integrative-structure can be transformed into vertical type ascend a height ladder or scaffold or platform-type working stand, one ladder to be used, and conversion is easy, quick, laborsaving between each user mode, subsidiary other component of ladder, it is all very convenient, practical to use, collect, carry transportation.

But second technical problem to be solved in the utility model provides a kind of ladder with the using as scaffolding that connects rigidity preferably.

But the 3rd technical problem to be solved in the utility model provides a kind of ladder of labour-saving again simple in structure, the easy and simple to handle using as scaffolding that is located by connecting.

The utility model solves the technical scheme that above-mentioned first technical problem adopted: but the ladder of this using as scaffolding, comprise the crosspiece between two root posts and the column, it is characterized in that: described two root posts respectively are provided with a coupling assembling at the same horizontal position near the top, described two root posts also respectively are provided with a coupling assembling at the same horizontal position near the bottom, and ladder is separated into, middle, following three parts, this coupling assembling is one to be provided with the tumbler of rotary positioning structure, can relatively rotate and make between the column in the neighbouring part of ladder, the location.

When but the ladder of this using as scaffolding converts scaffold or the use of platform-type working stand to, the user can move at the mid portion of ladder, for preventing to meet accident because of the mid portion telescopic movable of ladder, the mid portion of described ladder can be for fixed, it is non-telescoping formula, and top and bottom are divided into extension type, like this, also make the adjustable height of scaffold or platform-type working stand, make design be more suitable for actual use, and the structure of extension type can adopt existing various technology.

When but the ladder of this using as scaffolding converts following use of state of platform-type working stand to, can be shelved with a panel on the crosspiece surface of described mid portion, the length of this panel length and mid portion adapts, for the usefulness that the user places power tool, foreign material, also be convenient to the user and on the mid portion of ladder, stand, walk.

For further solving second technical problem of the present utility model, described tumbler can comprise with the first column blade-rotating of same rotating shaft and the second column blade-rotating, this first column blade-rotating links to each other with the end of corresponding column respectively with the second column blade-rotating, and the medial surface perpendicular to described rotating shaft in this first column blade-rotating and the second column blade-rotating amplexiforms mutually.Because first, second column in ladder three parts between the adjacent part is to amplexiform by the side of this first, second column 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; Simultaneously, can improve between first, second column guidance quality in relative rotation again.

Rotary positioning structure in the described tumbler can adopt existing various technology, but be further to solve the 3rd above-mentioned technical problem, the same circumference that this rotary positioning structure can be made the described first column blade-rotating head is provided with two geometries and consistent size, first keyway of an angle and second keyway separately, the position that the top of the described second column blade-rotating corresponds to this first keyway is provided with head and has activity orientation key to described rotating shaft mobile trend, wherein, this first keyway, second keyway matches with this activity orientation key.Being located by connecting that the employing key cooperates with keyway is simple in structure, accuracy is higher, thereby first, second column blade-rotating positioning accuracy is good, and the good rigidly that is located by connecting; And, the structure that is located by connecting that this key cooperates with keyway, activity orientation key head portion can be embedded into automatically among the corresponding keyway and make first, second stud location, remove head being embedded in keyway of activity orientation key, then first, second column can rotate relatively freely, but this makes the ladder of using as scaffolding of the present utility model, and is in ascend a height conversion attended operation between ladder or scaffold or this multiple user mode of platform-type working stand of vertical type, quick, easy, laborsaving.

The activity orientation key that described head has to described rotating shaft mobile trend can adopt existing various technology, but for making structure simpler, the activity orientation key can be spacing among a spring fastening, and, the middle part outer periphery of this activity orientation key is equipped with a flange, is provided with a spring between this flange and spring fastening bottom, thus make the activity orientation key can be in this spring fastening spacing moving, and under the effect of spring, its head has the trend that moves forward all the time; Its effect is can correctly locate rapidly when described activity orientation key falls into corresponding keyway, guarantees the stability of the utility model when various user mode.

For the activity orientation key is moved to the opposite direction of rotating shaft, make the head of activity orientation key detach keyway, remove being located by connecting between first, second column, can adopt various structures to realize, but for making apparatus structure simpler, operate more nimblely, the top of the described second column blade-rotating corresponds on the position of described activity orientation key a lever preferably is set, described activity orientation key is touched in the end of this lever, and the other end of this lever is connected with an operator link.Can make activity orientation key head portion detach corresponding keyway by this operator link and lever, realize the controlling of two duties of activity orientation key, very convenient, reliable.

Described first keyway can be arranged on the described first column blade-rotating and the described second column blade-rotating constitute " Γ " font angle of spread be 102～120 degree just in time with described activity orientation key mated position, it is so that but the ladder of using as scaffolding of the present utility model can launch and constitute scaffold or platform-type working stand user mode fully, and highly stable; Described second keyway can be arranged on the described first column blade-rotating and the described second column blade-rotating angle of spread be 180 degree just in time with described activity orientation key mated position, to guarantee the stability of the utility model when first column and second column launch fully and constitute vertical type and ascend a height terraced user mode.

The described first column blade-rotating can be set to screw with described second column and be connected with described first column, the described second column blade-rotating, also can be set to rivet and connect; Screw is linked and packed conveniently.

The bottom of described ladder lower part can be provided with foot of ladder, and this foot of ladder is used to strengthen the utility model as the ascend a height stability in use of ladder of vertical type.

Compared with prior art, advantage of the present utility model is: but the ladder of this using as scaffolding adopts integrative-structure, can be transformed into ascend a height ladder, scaffold or platform-type working stand of vertical type as required uses, one ladder to be used, and, conversion, location that ladder is promptly realized each user mode by the tumbler of band rotary positioning structure, conversion between each user mode need not dismounting or re-assemblies, conversion operations is easy, quick, laborsaving, subsidiary other component, it is all very convenient, practical to use, collect, carry transportation.

Description of drawings

Fig. 1 is converted to the structural representation of scaffold state for the utility model embodiment;

Fig. 2 is converted to the structural representation of platform-type working stand state for the utility model embodiment;

Fig. 3 is converted to the ascend a height structural representation of scalariform attitude of vertical type for the utility model embodiment;

Fig. 4 is converted to the structural representation of complete folding state for the utility model embodiment;

Fig. 5 is the structural representation (adjacent upright posts between be " Γ " font launch, omitted operator link) of tumbler among the utility model embodiment under the scaffold user mode;

Fig. 6 is the sectional view of Fig. 5;

Fig. 7 is the structural representation (adjacent upright posts between be 180 degree launch) of tumbler among the utility model embodiment under vertical type is ascended a height terraced user mode;

Fig. 8 is the structural representation (adjacent upright posts between angle be 0 degree) of tumbler among the utility model embodiment under the ladder folding state.

The specific embodiment

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

As Fig. 1～Figure 8 shows that preferred embodiment of the present utility model.

But be somebody's turn to do the ladder of using as scaffolding, comprise the crosspiece 2 between two root posts 1 and the column 1;

Described two root posts 1 respectively are provided with a coupling assembling at the same horizontal position near the top, described two root posts 1 also respectively are provided with a coupling assembling at the same horizontal position near the bottom, and with ladder be separated into, middle, three part A, B, C down, the mid portion B of described ladder is fixed, and top A and lower part C are extension type, independent telescope separately, and the bottom of described ladder lower part C is provided with foot of ladder 9;

This coupling assembling is one to be provided with the tumbler 3 of rotary positioning structure, can relatively rotate, locate and make between the column 1 in the neighbouring part of ladder, thereby this ladder can be transformed into scaffold or platform-type working stand or the vertical type ladder of ascending a height, also folding is got up fully;

When ladder is converted to the scaffold state, the top A of ladder, mid portion B, lower part C are " Γ " font to launch, and fixedly positioning mutually, tumbler 3 is in the lock state, at this moment, angle between the column 1 of top A and mid portion B is 110 degree, and the angle between the column 1 of lower part C and mid portion B also is 110 degree, referring to Fig. 1;

When ladder uses as platform-type working stand, be on the basis of scaffold, on crosspiece 2 surfaces of described mid portion B, shelve a panel D again, the length of this panel D length and mid portion B adapts, referring to Fig. 2;

When ladder is converted to vertical type and ascends a height the scalariform attitude, the top A of ladder, mid portion B, lower part C are " one " font to launch, also promptly go up, middle, the angle between the column 1 in three parts is 180 to spend down, and fixedly positioning mutually, tumbler 3 is in the lock state, referring to Fig. 3;

When ladder need be covered up, can remove the locking of tumbler 3 in the ladder, can relatively rotate between the top A of ladder, mid portion B, the lower part C, top A and lower part C are turned back to mid portion B the same side, ladder just fully folding get up, at this moment, the angle between the column 1 of top A and mid portion B be 0 the degree, angle between the column 1 of lower part C and mid portion B also is 0 degree, referring to Fig. 4.

As Fig. 4～shown in Figure 8, described tumbler 3 comprises with the first column blade-rotating 31 of same rotating shaft 33 and the second column blade-rotating 32, this first column blade-rotating 31 links to each other with the end of corresponding column 1 respectively with the second column blade-rotating 31, medial surface perpendicular to described rotating shaft 33 in this first column blade-rotating 31 and the second column blade-rotating 31 amplexiforms mutually, corresponding column 1 feasible and that the first column blade-rotating 31 links to each other with the second column blade-rotating 32 can rotating shaft 33 be the center, relatively rotates;

The same circumference that described rotary positioning structure is included in the described first column blade-rotating, 31 heads is provided with top two geometries and consistent size, first keyway 81 of an angle and second keyway 82 and the described second column blade-rotating 31 separately and corresponds to the head that is provided with on the position of this first keyway 81 and have activity orientation key 6 to described rotating shaft 33 mobile trends;

Wherein, first keyway 81 be arranged on the first column blade-rotating 31 and the second column blade-rotating 32 constitute " Γ " font angles of spread be 110 degree just in time with activity orientation key 6 mated position, second keyway 82 be arranged on the first column blade-rotating 31 and the second column blade-rotating, 32 angles of spread be 180 degree just in time with activity orientation key 6 mated position, this first keyway 81, second keyway 82 match with this activity orientation key 6; Make the first column blade-rotating 31 and the second column blade-rotating 32 when relatively rotating, when corresponding keyway turns to the position corresponding with activity orientation key 6, the head of activity orientation key 6 can be inserted in the corresponding keyway and tumbler 3 is in the lock state, realize the first column blade-rotating 31 and second column blade-rotating 32 location at an angle, also promptly: when the head of activity orientation key 6 is inserted into first keyway 81, adjacent two with column 1 that corresponding column blade-rotating links to each other between be the positioning states of 110 degree, scaffold made by ladder or platform-type working stand uses; When the head of activity orientation key 6 is inserted into second keyway 82, adjacent two with column 1 that corresponding column blade-rotating links to each other between be the positioning states of 180 degree, ladder uses as the vertical type ladder of ascending a height;

Described activity orientation key 6 is spacing among a spring fastening 71, and the middle part outer periphery of this activity orientation key 6 is equipped with a flange 61, is provided with a spring 7 between this flange 61 and spring fastening 71 bottoms;

The top of the described second column blade-rotating 32 corresponds on the position of described activity orientation key 6 lever 5 is set, the head (shown in the dotted portion among Fig. 6, Fig. 7, Fig. 8) of activity orientation key 6 is touched in the end of this lever 5, the other end of this lever 5 is connected with an operator link 51, but by two duties of this operator link 51 and lever 5 manipulation activities positioning keys 6, thereby the control whether realization unlocks to tumbler 3.

Claims

1, but a kind of ladder of using as scaffolding, comprise the crosspiece (2) between two root posts (1) and the column (1), it is characterized in that: described two root posts (1) respectively are provided with a coupling assembling at the same horizontal position near the top, described two root posts (1) also respectively are provided with a coupling assembling at the same horizontal position near the bottom, and ladder is separated into, middle, following three parts (A, B, C), this coupling assembling is one to be provided with the tumbler (3) of rotary positioning structure, can relatively rotate and make between the column (1) in the neighbouring part of ladder, the location.

But 2, the ladder of using as scaffolding according to claim 1 is characterized in that: the mid portion of described ladder (B) is for fixed, and top (A) and lower part (C) is extension type.

But 3, the ladder of using as scaffolding according to claim 2 is characterized in that: be shelved with a panel (D) on crosspiece (2) surface of described mid portion (B), the length of this panel (D) length and mid portion (B) adapts.

But 4, according to the ladder of claim 1 or 2 or 3 described using as scaffolding, it is characterized in that: described tumbler (3) comprises the first column blade-rotating (31) and the second column blade-rotating (32) with same rotating shaft (33), this first column blade-rotating (31) links to each other with the end of corresponding column (1) respectively with the second column blade-rotating (32), and this first column blade-rotating (31) is amplexiformed mutually with the medial surface that the second column blade-rotating (32) is gone up perpendicular to described rotating shaft (33).

5, but the ladder of using as scaffolding according to claim 4, it is characterized in that: same circumference that described rotary positioning structure is included in described first column blade-rotating (31) head is provided with two geometries and consistent size, first keyway (81) of an angle and second keyway (82) separately, correspond to the head that is provided with on the position of this first keyway (81) with the top of the described second column blade-rotating (32) and have activity orientation key (6) to described rotating shaft (33) mobile trend, wherein, this first keyway (81), second keyway (82) matches with this activity orientation key (6).

But 6, the ladder of using as scaffolding according to claim 5, it is characterized in that: described activity orientation key (6) is spacing among a spring fastening (71), and, the middle part outer periphery of this activity orientation key (6) is equipped with a flange (61), is provided with a spring (7) between this flange (61) and spring fastening (71) bottom.

But 7, the ladder of using as scaffolding according to claim 5, it is characterized in that: the top of the described second column blade-rotating (32) corresponds on the position of described activity orientation key (6) lever (5) is set, described activity orientation key (6) is touched in the end of this lever (5), and the other end of this lever (5) is connected with an operator link (51).

But 8, the ladder of using as scaffolding according to claim 5 is characterized in that: described first keyway (81) be arranged on the described first column blade-rotating (31) and the described second column blade-rotating (32) constitute " Γ " font angle of spread be 102～120 degree just in time with described activity orientation key (6) mated position.

But 9, the ladder of using as scaffolding according to claim 5 is characterized in that: described second keyway (82) be arranged on the described first column blade-rotating (31) and described second column blade-rotating (32) angle of spread be 180 degree just in time with described activity orientation key (6) mated position.

But 10, according to the ladder of claim 1 or 2 or 3 described using as scaffolding, it is characterized in that: the bottom of described ladder lower part (C) is provided with foot of ladder (9).