CN111980573A

CN111980573A - Anti-toppling type safe straight ladder

Info

Publication number: CN111980573A
Application number: CN202010960011.XA
Authority: CN
Inventors: 李友平
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2020-11-24

Abstract

The invention discloses an anti-falling safety straight ladder, which comprises: the ladder comprises a ladder frame, a ladder frame and a supporting frame, wherein the ladder frame comprises a pair of vertically arranged main upright posts and a pair of horizontally arranged main cross rods, and the upper ends and the lower ends of the two main upright posts are fixedly connected through the two main cross rods respectively to form a rectangular frame; the two groups of first supporting assemblies are respectively arranged at the upper ends of the two main upright posts, and each first supporting assembly comprises an arc-shaped pipe, a supporting plate, an arc-shaped rod and a first spring; the two groups of second supporting components are respectively arranged at the lower ends of the two main upright posts and comprise lantern rings, rotating rods, supporting blocks and inserting rods; wherein, the inside sliding seal of main pole setting upper portion disposes the piston piece, piston piece lower extreme fixed connection connecting rod. According to the invention, the first supporting component and the second supporting component are unfolded and contracted without additional operation of a user, so that the operation of people is simplified, and the use by the user is convenient.

Description

Anti-toppling type safe straight ladder

Technical Field

The invention belongs to the technical field of ladders, and particularly relates to an anti-toppling type safe straight ladder.

Background

The vertical ladder is a daily life appliance, and is formed by using two long thick rods as edges and enabling the middle of the two long thick rods to transversely penetrate through a cross rod suitable for climbing. The difference with the double ladder is that the straight ladder only comprises one ladder face, and the upper end of the ladder is obliquely arranged to be close to the wall surface when the ladder is used. Due to the climbing operation, after a worker climbs the ladder, the gravity center of the worker and the gravity center of the ladder are high, the risk of transverse dumping easily occurs, property can be damaged, and personal safety is also endangered. The main reasons for the tendency to topple sideways are: the contact surface between the upper end of the ladder and the wall surface is small, and relative sliding is easy to generate after external force is applied; meanwhile, the contact surface of the lower end and the ground is narrower, and the contact width is generally the width of the ladder.

In the prior art, in order to improve the placement stability of the ladder, additional auxiliary support mechanisms are generally disposed at the lower end of the ladder to increase the contact point or contact area between the lower end of the ladder and the ground. To facilitate storage or movement of the ladder, these support mechanisms require the ladder to be folded up when not in use. However, in the existing vertical ladder, the auxiliary supporting mechanism needs to be manually unfolded or folded, so that the workload of a user is increased, and the working efficiency of workers is reduced.

Disclosure of Invention

Based on the technical problems in the background art, the invention provides an anti-toppling type safety straight ladder.

The invention provides an anti-falling safety straight ladder, which comprises:

the ladder comprises a ladder frame, a pair of vertical main upright posts and a pair of horizontal main cross rods, wherein the upper ends and the lower ends of the two main upright posts are fixedly connected through the two main cross rods respectively to form a rectangular frame;

the support device comprises two main vertical rods, two groups of first support assemblies and two groups of second support assemblies, wherein the two groups of first support assemblies are respectively arranged at the upper ends of the two main vertical rods, each first support assembly comprises an arc-shaped pipe, a support plate, an arc-shaped rod and a first spring, one side surface of each support plate is rotatably arranged at the end part of each main vertical rod through a rotating shaft, the lower end of each arc-shaped pipe is fixedly connected with the corresponding main vertical rod and is communicated with the inside of each main vertical rod, the lower end of each arc-shaped rod is arranged in each arc-shaped pipe in a sliding and sealing mode, the upper end of each arc-shaped pipe is fixedly connected with each support rod, the rotating shafts are used;

the two groups of second supporting assemblies are respectively arranged at the lower ends of the two main vertical rods, each second supporting assembly comprises a lantern ring, a rotating rod, a supporting block and an inserting rod, the lantern rings are sleeved on the main vertical rods in a sliding mode, the inserting rods are inserted into the main cross rods below the second supporting assemblies, one ends of the inserting rods, far away from the main cross rods, are fixedly connected with the supporting blocks, and two ends of the rotating rods are respectively hinged with the lantern rings and the supporting blocks;

the piston block is arranged in the upper portion of the main upright rod in a sliding sealing mode, the lower end of the piston block is fixedly connected with the connecting rod, a sliding opening is formed in the side wall of the lower portion of the main upright rod, the lower end of the connecting rod is fixedly connected with the lantern ring through the fixing block, and the fixing ring is arranged in the sliding opening in a sliding mode.

Preferably, a second spring is further arranged in the main cross rod located below, and two ends of the second spring are fixedly connected with the two inserting rods respectively.

Preferably, when the inserted link is completely received in the main cross rod to the greatest extent, an included angle exists between the rotating rod and the main upright rod.

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

through setting up first supporting component and second supporting component, first supporting component is used for increasing the area of contact between ladder and the wall, second supporting component is used for increasing the area of contact between ladder and the ground, the expansion and the shrink of first supporting component and second supporting component, all not need the user extra operation, people only need take the ladder on the wall, alright make first supporting component and second supporting component take effect, play the effect that improves ladder stability, when the ladder does not contact with the wall, first supporting component and the shrink of second supporting component automatic re-setting, people's operation has been simplified, convenient to use person uses.

Drawings

Fig. 1 is a schematic structural view of an anti-toppling safety vertical ladder according to the present invention;

fig. 2 is a schematic structural view of a main upright of an anti-toppling safety vertical ladder according to the present invention;

fig. 3 is a schematic structural view of a first support assembly of the anti-toppling safety vertical ladder according to the present invention in a contracted state;

fig. 4 is a schematic structural view of the first support assembly of the anti-toppling safety vertical ladder according to the present invention in an extended state;

FIG. 5 is an enlarged view of the structure at A in FIG. 2;

fig. 6 is a schematic structural view of a main cross bar of an anti-toppling safety vertical ladder according to the present invention.

In the figure: the device comprises a main upright rod 1, a main cross rod 2, an auxiliary upright rod 3, an auxiliary cross rod 4, an arc-shaped pipe 5, a supporting plate 6, an arc-shaped rod 7, a first spring 8, a piston block 9, a connecting rod 10, a sliding opening 11, a lantern ring 12, a rotating rod 13, a supporting block 14, an inserted rod 15 and a second spring 16.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

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. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, 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.

Referring to fig. 1 to 6, an anti-toppling safety vertical ladder includes:

the ladder comprises a pair of vertically arranged main uprights, a pair of horizontally arranged main cross rods 2, a pair of vertically arranged auxiliary uprights and a plurality of horizontally arranged auxiliary cross rods 4, wherein the upper ends and the lower ends of the two main uprights are fixedly connected through the two main cross rods 2 respectively to form a rectangular frame, a tubular structure with two closed ends of the main upright rods 1 is formed, the main cross rods 2 positioned below are tubular structures with two ends penetrating through, the two auxiliary cross rods 4 are arranged inside the two main cross rods 2 and have a distance with the main cross rods 2, two ends of each auxiliary cross rod 4 are fixedly connected with the main cross rods 2, and the plurality of auxiliary cross rods 4 are fixedly arranged between the two auxiliary upright rods 3;

the first supporting assemblies are respectively arranged at the upper ends of the two main vertical rods 1 and used for increasing the contact area between the ladder and the wall surface, each first supporting assembly comprises an arc-shaped pipe 5, a supporting plate 6, an arc-shaped rod 7 and a first spring 8, one side surface of each supporting plate 6 is rotatably arranged at the end part of each main vertical rod 1 through a rotating shaft, the lower end of each arc-shaped pipe 5 is fixedly connected with the corresponding main vertical rod 1 and is communicated with the inside of the corresponding main vertical rod 1, the lower end of each arc-shaped rod 7 is slidably and hermetically arranged in the corresponding arc-shaped pipe 5, the upper end of each arc-shaped pipe 5 is fixedly connected with the corresponding supporting rod, the corresponding arc-shaped rod 7 and the corresponding rotating shaft serve as the circle center, each spring is sleeved on the;

the two groups of second supporting assemblies are respectively arranged at the lower ends of the two main vertical rods 1 and used for increasing the contact area between the ladder and the ground, each second supporting assembly comprises a lantern ring 12, a rotating rod 13, a supporting block 14 and an inserting rod 15, the lantern ring 12 is sleeved on the main vertical rods 1 in a sliding mode, the inserting rod 15 is inserted into the lower main cross rod 2, one end, far away from the main cross rod 2, of each second supporting assembly is fixedly connected with the supporting block 14, and two ends of the rotating rod 13 are respectively hinged with the lantern ring 12 and the supporting block 14;

the inner part of the upper part of the main upright stanchion 1 is provided with a piston block 9 in a sliding and sealing way, the lower end of the piston block 9 is fixedly connected with a connecting rod 10, the side wall of the lower part of the main upright stanchion 1 is provided with a sliding opening 11, the lower end of the connecting rod 10 is fixedly connected with a lantern ring 12 through a fixed block, and a fixed ring is arranged in the sliding opening 11 in a sliding way;

in the embodiment applying the technical scheme, the ladder is in an unused initial state, an included angle does not exist between the support plate 6 and the main upright stanchion 1 which are parallel to each other, as shown in fig. 2, the lantern ring 12 is positioned at the top end of the sliding opening 11, the support block 14 is positioned at a position close to the main cross rod 2, the included angle between the rotating rod 13 and the main upright stanchion is smaller, and at the moment, the first support component and the second support component are both in a contracted state, so that the ladder is convenient to transport and store; when the ladder is used, the upper end face of the ladder is close to a wall surface, a certain included angle exists between the ladder and the wall surface at the moment, the supporting plate 6 is in parallel contact with the wall surface, and then a certain included angle is formed between the supporting plate 6 and the main vertical rod 1, as shown in fig. 4, in the process of forming the included angle, the arc-shaped rod 7 continuously slides towards the arc-shaped tube 5, and then partial air in the arc-shaped tube 5 is squeezed into the main vertical rod 1, so that the piston block 9 is pushed to move downwards for one end distance, the lantern ring 12 correspondingly moves downwards for the same distance under the action of the connecting rod 10, and further the supporting block 14 moves towards one side far away from the main transverse rod 2 through the rotation of the rotating rod 13, so that the width of the lower end of the ladder, which is in contact with the ground, is increased, the contact stability of; after the ladder is used, under the action of the first spring 8, the supporting plate 6 is reset to restore to a state parallel to the main upright rod 1, and meanwhile, the piston block 9 is reset to drive the lantern ring 12 to move upwards to reset under the action of air pressure, so that the supporting block 14 moves towards one side close to the main cross rod 2 to reset.

According to the preferable technical scheme in the embodiment, the second spring 16 is further arranged in the main cross rod 2 positioned below, two ends of the second spring 16 are respectively and fixedly connected with the two inserting rods 15, and the second spring 16 is arranged, so that the resetting force of the second supporting component is improved, and the resetting force of the first supporting component is improved;

in the preferred technical scheme of this embodiment, rollers are rotatably disposed below the supporting block 14, and the rollers can reduce the friction between the supporting block 14 and the ground, so as to facilitate the movement of the supporting block 14;

according to the preferable technical scheme in the embodiment, when the inserting rod 15 is completely and maximally retracted into the main cross rod 2, an included angle exists between the rotating rod 13 and the main upright rod 1, the included angle is larger than 15 degrees, and the supporting block 14 can be driven to generate a movement trend away from the main cross rod 2 when the lantern ring 12 moves downwards.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. An anti-toppling safety straight ladder is characterized by comprising:

the ladder comprises a ladder frame, wherein the ladder frame comprises a pair of vertically arranged main upright posts and a pair of horizontally arranged main cross rods (2), the upper ends and the lower ends of the two main upright posts are fixedly connected through the two main cross rods (2) respectively to form a rectangular frame, the two ends of each main upright post (1) are closed tubular structures, and the main cross rods (2) positioned below are tubular structures with two ends penetrating through;

the two groups of first supporting assemblies are respectively arranged at the upper ends of the two main vertical rods (1), each first supporting assembly comprises an arc-shaped pipe (5), a supporting plate (6), an arc-shaped rod (7) and a first spring (8), one side face of each supporting plate (6) is rotatably arranged at the end part of each main vertical rod (1) through a rotating shaft, the lower end of each arc-shaped pipe (5) is fixedly connected with the corresponding main vertical rod (1) and is communicated with the inside of the corresponding main vertical rod (1), the lower end of each arc-shaped rod (7) is arranged in the corresponding arc-shaped pipe (5) in a sliding sealing mode, the upper end of each arc-shaped rod is fixedly connected with the corresponding supporting rod, the arc-shaped pipes (5) and the arc-shaped rods (7) both use the rotating shafts as circle centers, the springs are sleeved on the arc-shaped rods (7), one ends of;

the two groups of second supporting assemblies are respectively arranged at the lower ends of the two main vertical rods (1), each second supporting assembly comprises a lantern ring (12), a rotating rod (13), a supporting block (14) and an inserting rod (15), the lantern ring (12) is sleeved on the corresponding main vertical rod (1) in a sliding mode, the inserting rod (15) is inserted into the lower main cross rod (2), one end, far away from the main cross rod (2), of each inserting rod is fixedly connected with the corresponding supporting block (14), and two ends of the rotating rod (13) are respectively hinged to the lantern ring (12) and the corresponding supporting block (14);

wherein, main pole setting (1) upper portion inside sliding seal disposes piston block (9), piston block (9) lower extreme fixed connection connecting rod (10), main pole setting (1) has seted up on the lower part lateral wall and has slided mouthful (11), connecting rod (10) lower extreme passes through fixed block and lantern ring (12) fixed connection, solid fixed ring slides and disposes in slideing mouthful (11).

2. The anti-toppling safety straight ladder according to claim 1, wherein a second spring (16) is further arranged in the lower main cross bar (2), and two ends of the second spring (16) are respectively fixedly connected with the two insert rods (15).

3. An anti-tip safety vertical ladder according to claim 1, characterized in that when the inserted rod (15) is fully retracted to the maximum within the main cross bar (2), there is an angle between the rotating rod (13) and the main upright (1).