CN113863840A

CN113863840A - Multifunctional rescue ladder

Info

Publication number: CN113863840A
Application number: CN202111051778.1A
Authority: CN
Inventors: 朱兵
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-08
Filing date: 2021-09-08
Publication date: 2021-12-31

Abstract

The invention discloses a multifunctional rescue ladder, which comprises: the folding device comprises a folding unit, a first limiting piece, a second limiting piece, a supporting rod and a telescopic plate; the folding unit comprises a ladder bar, pedals and universal wheels; the universal wheel is rotatably arranged at one end of the ladder rod in the length direction and positioned at one side of the ladder rod, which is far away from the pedal; the rescue ladder is provided with four folding units which are sequentially connected, and in any two adjacent folding units, ladder bars on the left side and the right side of one folding unit are in one-to-one correspondence with and are rotationally connected with ladder bars on the left side and the right side of the other folding unit; the rescue ladder has a straight ladder shape, a folding shape, a herringbone ladder shape and a trolley shape, so that the rescue ladder can adapt to different use occasions. The multifunctional device is multifunctional, flexible to use and high in practicability.

Description

Multifunctional rescue ladder

Technical Field

The invention relates to the field of rescue ladders, in particular to a multifunctional rescue ladder.

Background

The ladder is a common tool in rescue operation, the application scene is very wide, the common ladder is basically divided into a straight ladder and a herringbone ladder, the functions are single, and the use requirements under different rescue scenes are difficult to meet, so that a multifunctional rescue ladder needs to be designed.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the first purpose of the invention is to provide a multifunctional rescue ladder.

The technical scheme of the invention is as follows: a multi-functional rescue ladder, its characterized in that includes: the folding device comprises a folding unit, a first limiting piece, a second limiting piece, a supporting rod and a telescopic plate;

the folding unit comprises a ladder bar, pedals and universal wheels; the number of the ladder bars is two, the two ladder bars are arranged in parallel and spaced in the left-right direction, the pedal is arranged between the two ladder bars and is respectively and rotatably connected with the ladder bars on the left side and the right side, and the universal wheel is rotatably arranged at one end of the ladder bars in the length direction and is positioned on one side of the ladder bars, which is far away from the pedal;

the rescue ladder is provided with four folding units which are sequentially connected, and in any two adjacent folding units, ladder bars on the left side and the right side of one folding unit are in one-to-one correspondence with and are rotationally connected with ladder bars on the left side and the right side of the other folding unit;

the rescue ladder has a straight ladder shape, a folding shape, a herringbone ladder shape and a trolley shape;

in the straight ladder shape, four ladder bars on the left side of the four folding units are collinear, four ladder bars on the right side of the four folding units are collinear, the pedals are perpendicular to the ladder bars on the left side and the right side of the four folding units, and the ladder bars in any two adjacent folding units are connected and limited through the first limiting piece;

in the folding state, four ladder bars on the left side of the four folding units are collinear, four ladder bars on the right side of the four folding units are collinear, the pedal and the ladder bars on the left side and the right side form an acute angle or an obtuse angle respectively, and the ladder bars of any two adjacent folding units are connected and limited through the first limiting piece;

in the herringbone ladder shape, the ladder bar of the folding unit positioned at the head end is collinear with the corresponding ladder bar of the folding unit adjacent to the ladder bar and is connected and limited through the first limiting piece, the ladder bar of the folding unit positioned at the tail end is collinear with the corresponding ladder bar of the folding unit adjacent to the ladder bar and is connected and limited through the first limiting piece, and in the two folding units positioned in the middle, the ladder bar of one folding unit and the corresponding ladder bar of the other folding unit form an acute included angle, and the pedal of one folding unit is connected with the pedal of the other folding unit through the supporting rod;

the trolley is in a trolley shape, four folding units are sequentially connected end to form a rectangular ring shape, in any two adjacent folding units, the ladder rod of one folding unit is perpendicular to the corresponding ladder rod of the other folding unit and is connected and limited through the second limiting part, at the moment, the universal wheel is located below, and the expansion plate is hung on the ladder rods.

Further, the one end of the length direction of ladder pole is equipped with the picture peg, be equipped with the through-hole on the picture peg, the other end of the length direction of ladder pole is equipped with the slot, be equipped with the round pin axle in the slot, arbitrary continuous two in the ladder pole, one of them ladder pole the picture peg inserts another ladder pole in the slot, just the round pin axle is worn to establish in the through-hole.

Further, the both ends of ladder bar length direction are equipped with spacing seat respectively, be equipped with the spacing groove on the spacing seat, first locating part is the flat board, the second locating part is the L shaped plate, two adjacent wantonly in the ladder bar, when two when the ladder bar collineation, first locating part card is gone into two the spacing inslot, when two when the ladder bar is perpendicular, the second locating part card is gone into two the spacing inslot.

Compared with the prior art, the invention has the following beneficial effects:

the rescue ladder is integrally designed in a folding mode, and has four forms, namely a folding form, a straight ladder form, a herringbone ladder form and a trolley form; when the rescue ladder is not used at ordinary times, the rescue ladder can be folded into a folding shape, the volume of the rescue ladder is reduced, and no extra space is occupied; when a ladder is built, the ladder can be folded and converted into a straight ladder shape; when no ladder is built, the ladder can be folded and transformed into a herringbone ladder shape, so that the ladder can adapt to different use occasions; in addition, the device can be converted into a trolley form for transportation and use. The multifunctional device is multifunctional, flexible to use and high in practicability.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts:

FIG. 1 is a schematic view of the present invention in a straight ladder configuration;

FIG. 2 is an enlarged view at A in FIG. 1;

FIG. 3 is a schematic view of the present invention in a folded configuration;

FIG. 4 is a schematic representation of the herringbone ladder state of the present invention;

FIG. 5 is a schematic view of the cart configuration of the present invention;

FIG. 6 is a schematic view of a part of the structure of the cart of the present invention.

Reference numerals:

1. a folding unit; 2. a ladder bar; 3. a pedal; 4. a universal wheel; 5. a first limit piece; 6. a second limiting member; 7. a support bar; 8. a retractable plate; 9. inserting plates; 10. a slot; 11. a limiting seat; 12. a limiting groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "vertical", "circumferential", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

A multi-functional rescue ladder according to an embodiment of the present invention is described below with reference to fig. 1 to 6 of the accompanying drawings, including: the folding device comprises a folding unit 1, a first limiting piece 5, a second limiting piece 6, a supporting rod 7 and a telescopic plate 8;

the folding unit 1 comprises a ladder bar 2, pedals 3 and universal wheels 4; the two ladder bars 2 are arranged in parallel and spaced apart in the left-right direction, the pedal 3 is arranged between the two ladder bars 2 and is respectively connected with the ladder bars 2 on the left side and the right side in a rotating way, and the universal wheel 4 is rotatably arranged at one end of the ladder bars 2 in the length direction and is positioned on one side of the ladder bars 2 far away from the pedal 3; the rescue ladder is provided with four folding units 1 which are sequentially connected, and in any two adjacent folding units 1, ladder bars 2 on the left side and the right side of one folding unit 1 are in one-to-one correspondence with and rotatably connected with ladder bars 2 on the left side and the right side of the other folding unit 1.

Specifically speaking, this rescue ladder comprises four folding unit 1, every folding unit 1 all includes two ladder poles 2, a universal wheel 4 and a plurality of footboard 3, refer to fig. 1, two ladder poles 2 are arranged and are extended along upper and lower direction along left right direction interval, be equipped with footboard 3 between two ladder poles 2, the left end of footboard 3 is articulated with left ladder pole 2, the right-hand member of footboard 3 is articulated with ladder pole 2 on right side, footboard 3 is a plurality of, a plurality of footboard 3 are arranged along upper and lower direction interval, universal wheel 4 locates the upper end of left side ladder pole 2 and is located the left side of this ladder pole 2.

Referring to fig. 2, the ladder bar 2 is provided with four limiting seats 11, the four limiting seats 11 are distributed at the upper and lower ends of the front side surface and the upper and lower ends of the rear side surface of the ladder bar 2, the limiting seats 11 are provided with limiting grooves 12, the limiting grooves 12 run through to one side of the limiting seats 11 away from the center of the ladder bar 2 in the upper and lower directions, and the limiting grooves 12 run through to one side of the limiting seats 11 away from the pedal 3 in the left and right directions.

The four folding units 1 of the rescue ladder are connected in sequence, in any two adjacent folding units 1, the left ladder rod 2 of one folding unit 1 is rotatably connected with the left ladder rod 2 of the other folding unit 1, and the right ladder rod 2 of one folding unit 1 is rotatably connected with the right ladder rod 2 of the other folding unit 1.

Specifically, referring to fig. 2, an insertion plate 9 is disposed at one end of each of the ladder bars 2 in the length direction, a through hole is disposed in the insertion plate 9, a slot 10 is disposed at the other end of each of the ladder bars 2 in the length direction, and a pin shaft is disposed in the slot 10, so that when the folding unit is installed, the insertion plate 9 of one of the ladder bars 2 is inserted into the slot 10 of the other ladder bar 2, and then the pin shaft is inserted into the through hole, and the rotation connection of the ladder bars 2 of the two folding units 1 is completed.

In practical application, the rescue ladder has four functional forms, namely a straight ladder form, a folding form, a herringbone ladder form and a trolley form, which are introduced one by one.

As shown in fig. 1 and 2, in the vertical ladder configuration, four ladder bars 2 on the left side of four folding units 1 are collinear, four ladder bars 2 on the right side are collinear, pedals 3 are perpendicular to the ladder bars 2 on the left and right sides, and the ladder bars 2 in any two adjacent folding units 1 are connected and limited by a first limiting member 5. In practical application, first locating part 5 is the flat board, and under the straight ladder form, when two ladder bars 2 collineations, spacing groove 12 on two ladder bars 2 is relative, and first locating part 5 can block into two spacing inslots 12 this moment so that two ladder bars 2 can't rotate again, realizes spacing fixedly, and this kind of spacing form is simple, easy dismounting, easy to use. The straight ladder shape is suitable for high climbing or scenes with ladder-building positions.

As shown in fig. 3, in the folded state, four ladder bars 2 on the left side of the four folding units 1 are collinear, four ladder bars 2 on the right side are collinear, the pedal 3 and the ladder bars 2 on the left and right sides form an acute angle or an obtuse angle, respectively, and the ladder bars 2 of any two adjacent folding units 1 are connected and limited by a first limiting member 5. Specifically, the folded configuration is formed by folding the steps 3 on the basis of the straight step configuration, because the steps 3 between the left and right side steps 2 and the middle step correspond to a parallelogram configuration, so that the folding can be conveniently performed to reduce the volume of the rescue ladder. The folding form is suitable for scenes of usual storage or carrying out.

As shown in fig. 4, in the herringbone ladder configuration, the ladder bar 2 of the folding unit 1 located at the head end is collinear with the corresponding ladder bar 2 of the folding unit 1 adjacent thereto and connected to be limited by the first limiting member 5, the ladder bar 2 of the folding unit 1 located at the tail end is collinear with the corresponding ladder bar 2 of the folding unit 1 adjacent thereto and connected to be limited by the first limiting member 5, and in the two folding units 1 located at the middle, the ladder bar 2 of one folding unit 1 and the corresponding ladder bar 2 of the other folding unit 1 form an acute included angle, and the pedal 3 of one folding unit 1 is connected to the pedal 3 of the other folding unit 1 by the support bar 7.

Specifically, compared with the straight ladder shape, the shape is actually that the connection form of the head folding unit 1 and the tail folding unit 1 is unchanged, only the first limiting member 5 on the ladder bar 2 connected with the middle two folding units 1 is removed, then the ladder bars 2 are rotated from the collinear state to form the acute included angle shape, and finally the supporting bar 7 is connected with the pedal 3 for fixing. The herringbone ladder is suitable for low climbing or scenes without ladder building positions.

As shown in fig. 5 and 6, in the trolley shape, four folding units 1 are sequentially connected end to form a rectangular ring, in any two adjacent folding units 1, the ladder bar 2 of one folding unit 1 is perpendicular to the corresponding ladder bar 2 of the other folding unit 1 and is connected and limited by a second limiting member 6, at this time, the universal wheel 4 is located below, and the expansion plate 8 is hung on the ladder bar 2.

Particularly, under this kind of form, 1 end to end in proper order of four folding units, and 2 mutually perpendicular of ladder pole in two arbitrary adjacent folding units 1, thereby can constitute the square ring shape, and second locating part 6 is the L shaped plate, insert second locating part 6 and just can make two adjacent ladder poles 2 unable rotations again in the spacing groove 12 on two adjacent ladder poles 2, realize spacing fixed, universal wheel 4 on four folding units 1 then distributes at four corners of square ring shape, place the expansion plate 8 of a rectangle in the square ring shape and hang on ladder pole 2 again, alright constitute a simple and easy dolly, thereby be convenient for transport rescue goods and materials or rescue equipment etc..

In conclusion, the rescue ladder integrally adopts a folding design and has four forms, namely a folding form, a straight ladder form, a herringbone ladder form and a trolley form; when the rescue ladder is not used at ordinary times, the rescue ladder can be folded into a folding shape, the volume of the rescue ladder is reduced, and no extra space is occupied; when a ladder is built, the ladder can be folded and converted into a straight ladder shape; when no ladder is built, the ladder can be folded and transformed into a herringbone ladder shape, so that the ladder can adapt to different use occasions; in addition, the device can be converted into a trolley form for transportation and use. The multifunctional device is multifunctional, flexible to use and high in practicability.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A multi-functional rescue ladder, its characterized in that includes: the folding device comprises a folding unit, a first limiting piece, a second limiting piece, a supporting rod and a telescopic plate;

2. The multifunctional rescue ladder according to claim 1, wherein an insertion plate is provided at one end of the ladder bar in the length direction, a through hole is provided on the insertion plate, an insertion groove is provided at the other end of the ladder bar in the length direction, a pin shaft is provided in the insertion groove, the insertion plate of one of the two ladder bars arbitrarily connected is inserted into the insertion groove of the other ladder bar, and the pin shaft is inserted into the through hole.

3. The multifunctional rescue ladder according to claim 1, wherein two ends of the ladder bars in the length direction are respectively provided with a limiting seat, the limiting seats are provided with a limiting groove, the first limiting member is a flat plate, the second limiting member is an L-shaped plate, in any two adjacent ladder bars, when the two ladder bars are collinear, the first limiting member is clamped into the two limiting grooves, and when the two ladder bars are perpendicular, the second limiting member is clamped into the two limiting grooves.