CN214170424U

CN214170424U - Multifunctional ladder

Info

Publication number: CN214170424U
Application number: CN202021548430.4U
Authority: CN
Inventors: 蔡福连
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-30
Filing date: 2020-07-30
Publication date: 2021-09-10
Anticipated expiration: 2030-07-30

Abstract

The utility model discloses a multifunctional ladder, including one-level ladder frame, second grade ladder frame and tertiary ladder frame, second grade ladder frame is equipped with two sets ofly at least, and is adjacent between the second grade ladder frame, between one-level ladder frame and the second grade ladder frame, all be connected through location coupling mechanism between second grade ladder frame and the tertiary ladder frame, location coupling mechanism includes shell and chuck, the chuck is located that the shell is inside to be connected through pivot and shell rotation, shell internal connection is equipped with the stopper, it is equipped with the ejector pin to slide on the stopper to cup joint, the one end connection that the stopper was kept away from to the ejector pin is equipped with the locking piece, cup joint on the ejector pin and be equipped with first spring, first spring one end is connected with the stopper, and the other end is connected with the locking piece, shell surface matching locking piece is equipped with logical groove, the chuck matches the locking piece on global and is equipped with a plurality of draw-in grooves. Compared with the prior art, the utility model the advantage lie in: the height of the ladder can be conveniently adjusted, and the ladder-shaped using form can be adaptively adjusted.

Description

Multifunctional ladder

Technical Field

The utility model relates to a ladder technical field specifically indicates a multifunctional ladder.

Background

A herringbone ladder: a climbing tool for finishing work and the like in a space above a plane, such as a roof. When the ladder is used, the front ladder rod, the rear ladder rod and the ground form an isosceles triangle which looks like a herringbone, so that the ladder is called as a herringbone ladder. Practical double ladder has fixed double ladder and activity double ladder. The fixed herringbone ladder is a temporary building tool for people; the movable herringbone ladder connects the tops of two ladders together by hinges, can be combined when moving, and is widely applied to electrician operation due to the flexibility of the movable herringbone ladder. The early herringbone ladder is generally made of wood, and along with the development of the metal industry, aluminum alloy materials are mostly utilized at present; the aluminum alloy herringbone ladder has the characteristics of lightness, attractiveness, durability and low manufacturing cost, and is widely used.

However, the existing herringbone ladder is single in use mode, cannot be adjusted in height and shape according to use requirements, and cannot well meet the use requirements.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome above technical defect, provide a be convenient for adjust the ladder height, the trapezoidal multi-functional ladder that uses the form is adjusted to adaptability.

In order to solve the technical problem, the utility model provides a technical scheme does: a multifunctional ladder comprises a first-level ladder frame, a second-level ladder frame and a third-level ladder frame, wherein at least two sets of the second-level ladder frames are arranged, the adjacent second-level ladder frames, the first-level ladder frame and the second-level ladder frame and the third-level ladder frame are connected through a positioning connecting mechanism, the positioning connecting mechanism comprises a shell and a chuck, the chuck is positioned inside the shell and is rotatably connected with the shell through a rotating shaft, a limiting block is connected inside the shell, an ejector rod is sleeved on the limiting block in a sliding mode, one end, away from the limiting block, of the ejector rod is connected with a locking block, a first spring is sleeved on the ejector rod, one end of the first spring is connected with the limiting block, the other end of the first spring is connected with the locking block, a through groove is formed in the surface of the shell in a matching mode, a plurality of clamping grooves are formed in the circumferential surface of the chuck in a matching mode, and a limiting rotary piece is rotatably connected inside the chuck, the inside one end connection of keeping away from the locking piece of chuck is equipped with the fixed block, pass through second spring coupling between fixed block and the spacing rotor, it is equipped with a plurality of dops to correspond the draw-in groove on the global of spacing rotor, dop salient is on the draw-in groove surface, it is equipped with the standing groove to match the dop towards the second spring on the draw-in groove, it is equipped with the spanner to rotate the connection through the round pin axle on the shell, the upper and lower surface of chuck is located to the one end branch that the spanner is located the shell, the spanner rotates around the round pin axle, and the spanner front end is supported the locking piece and is removed in logical groove.

Furthermore, one end of the first-level ladder frame and one end of the third-level ladder frame, which are far away from the positioning and connecting mechanism, are connected with a supporting cross rod, two ends of the supporting cross rod are connected with an arc-shaped base, and anti-slip strips are uniformly laid on the lower surface of the arc-shaped base.

Furthermore, a connector is arranged on the limiting rotary piece, and the second spring is connected to the connector.

Furthermore, the pin shaft is provided with a torsion spring in an adjusting manner, one end of the torsion spring is connected with the wrench, and the other end of the torsion spring is connected with the inside of the shell.

Compared with the prior art, the utility model the advantage lie in: the second-stage ladder frames are arranged in a plurality of groups and can be selectively arranged according to requirements, the adjacent second-stage ladder frames, the first-stage ladder frame and the second-stage ladder frame and the third-stage ladder frame are connected through the positioning connecting mechanism, the connection angle between the ladder frames can be adjusted by utilizing the rotating connection relation between the chuck and the shell of the positioning connecting mechanism, the locking block is pushed by a wrench to separate the locking block from the clamping groove, the limiting rotating piece is arranged in the clamping groove under the action of the second spring to prevent the locking block from entering the clamping groove again under the action of the first spring, so that the rotating included angle between the chuck and the shell is convenient to change, when the locking block moves to the other clamping groove, as the clamping head protrudes out of the surface of the clamping groove, the locking block supports against the clamping head to drive the clamping head to rotate and compress the second spring to move the clamping head out of the clamping groove, so that the locking block is clamped in the clamping groove under the action of the first spring to form a locking state, and the use and the operation are convenient, the locking structure is stable, and the use convenience and safety are effectively improved.

Drawings

Fig. 1 is a schematic view of the structure of the multifunctional ladder of the present invention.

Fig. 2 is a schematic view of the connection locking state structure of the positioning and connecting mechanism of the multifunctional ladder of the present invention.

Fig. 3 is a schematic view of the connection and unlocking state structure of the positioning and connecting mechanism of the multifunctional ladder of the present invention.

Fig. 4 is a schematic view of the structure of the limiting rotary piece of the multifunctional ladder of the present invention.

Fig. 5 is a schematic view of a wrench connecting structure of the multifunctional ladder of the present invention.

Fig. 6 is a schematic view of a connection structure of a horizontal rod supported at the bottom of a first-level ladder rack of the multifunctional ladder of the present invention.

As shown in the figure: 1. one-level ladder frame, 2, second grade ladder frame, 3, tertiary ladder frame, 4, location coupling mechanism, 5, shell, 6, chuck, 7, pivot, 8, stopper, 9, ejector pin, 10, locking piece, 11, first spring, 12, logical groove, 13, draw-in groove, 14, spacing rotor, 15, fixed block, 16, second spring, 17, dop, 18, standing groove, 19, round pin axle, 20, spanner, 21, arc base, 22, antislip strip, 23, connector, 24, torsional spring, 25, support horizontal pole.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1-3, a multifunctional ladder comprises a first-level ladder frame 1, a second-level ladder frame 2 and a third-level ladder frame 3, wherein the second-level ladder frame 2 is at least provided with two groups, the adjacent second-level ladder frames 2, the first-level ladder frame 1 and the second-level ladder frame 2 and the second-level ladder frame 3 are connected through a positioning connecting mechanism 4, the positioning connecting mechanism 4 comprises a shell 5 and a chuck 6, the chuck 6 is positioned inside the shell 5 and is rotatably connected with the shell 5 through a rotating shaft 7, a limiting block 8 is connected inside the shell 5, a mandril 9 is sleeved on the limiting block 8 in a sliding manner, one end of the mandril 9 far away from the limiting block 8 is connected with a locking block 10, a first spring 11 is sleeved on the mandril 9, one end of the first spring 11 is connected with the limiting block 8, the other end of the first spring is connected with the locking block 10, the locking block 10 is matched with the surface of the shell 5 and is provided with a through groove 12, the locking block can move in the through groove along the length direction of the through groove, a plurality of clamping grooves 13 are arranged on the peripheral surface of the chuck 6 in a matching way with the locking block 10, a limiting rotary sheet 14 is rotatably connected inside the chuck 6, a fixed block 15 is connected at one end of the inside of the chuck 6 far away from the locking block 10, the fixed block 15 is connected with the limiting rotary piece 14 through a second spring 16, a plurality of clamping heads 17 are arranged on the circumferential surface of the limiting rotary piece 14 corresponding to the clamping grooves 13, the clamping head 17 protrudes out of the surface of the clamping groove 13, a placing groove 18 is arranged on the clamping groove 13 facing the second spring 16 and matched with the clamping head 17, a spanner 20 is rotatably connected on the shell 5 through a pin shaft 19, one end of the spanner 20 positioned in the shell 5 is respectively arranged on the upper surface and the lower surface of the chuck 6, so that the rotation of the spanner is facilitated, the wrench 20 rotates around the pin 19, and the front end of the wrench 20 abuts against the locking block 10 to move in the through groove 12.

One-level ladder frame 1 and tertiary ladder frame 3 keep away from the one end connection of positioning connection mechanism and are equipped with support horizontal pole 25, the both ends connection that supports horizontal pole 25 is equipped with arc base 21, antislip strip 22 is evenly laid to arc base 21's lower surface, be equipped with connector 23 on the spacing rotor plate 14, second spring 16 is connected on connector 23, round pin 19 is gone up to adjust and is equipped with torsional spring 24, torsional spring 24's one end is connected with spanner 20, the other end and 5 internal connection of shell.

When the utility model is implemented specifically, the distribution of the clamping grooves 13 on the chuck 6 is set according to the use requirement, when in use, the front end of the wrench 20 is enabled to be abutted against the locking block 10 by rotating the wrench 20, the locking block 10 is driven to move towards the direction far away from the clamping grooves 13 in the through groove 12 and compress the first spring 11, when the locking block 10 is completely moved out of the clamping groove 13 and is not in contact with the clamping head 17, the limiting rotating piece 14 is rotated by the acting force of the second spring 16, so that the clamping head 17 is placed in the clamping groove 13, the locking block 10 is limited to rebound under the action of the first spring 11, the relative rotation of the operating shell 5 and the chuck 6 is convenient, when the next clamping groove 13 is rotated, because the clamping head 17 is protruded out of the clamping groove 13, the locking block 10 is enabled to be abutted against the clamping head 17 to drive the limiting rotating piece 14 to rotate and compress the second spring 16 by continuing to rotate until the clamping head 17 is pushed out of the clamping groove 13 to the placing groove 18, the locking block 10 is placed in the clamping groove 13 under the action of the first spring 11, the chuck 17 rebounds against the side wall of the lock block 10 under the action of the second spring 16, so that the housing 5 and the chuck 6 form a locked state, and when adjustment is needed again, the front end of the wrench 20 is used for driving the lock block 10 to move in the through groove 12 by rotating the wrench 20 again, and the rotation limitation of the lock block 10 on the chuck 6 is removed.

The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.

Claims

1. The utility model provides a multifunctional ladder, includes one-level ladder frame (1), second grade ladder frame (2) and tertiary ladder frame (3), its characterized in that: two sets of at least are equipped with in second grade ladder frame (2), adjacent between second grade ladder frame (2), between one-level ladder frame (1) and second grade ladder frame (2), all be connected through location coupling mechanism (4) between second grade ladder frame (2) and tertiary ladder frame (3), location coupling mechanism (4) include shell (5) and chuck (6), chuck (6) are located shell (5) inside and rotate with shell (5) through pivot (7) and are connected, shell (5) internal connection is equipped with stopper (8), sliding sleeve joint is equipped with ejector pin (9) on stopper (8), the one end that stopper (8) were kept away from to ejector pin (9) is connected and is equipped with locking piece (10), the cover is equipped with first spring (11) on ejector pin (9), first spring (11) one end is connected with stopper (8), and the other end is connected with locking piece (10), the surface of the shell (5) is matched with the locking block (10) and is provided with a through groove (12), the periphery of the chuck (6) is provided with a plurality of clamping grooves (13) in a matching mode, the interior of the chuck (6) is rotatably connected with a limiting rotating piece (14), one end, far away from the locking block (10), of the interior of the chuck (6) is connected with a fixing block (15), the fixing block (15) is connected with the limiting rotating piece (14) through a second spring (16), the periphery of the limiting rotating piece (14) is provided with a plurality of clamping heads (17) corresponding to the clamping grooves (13), the clamping heads (17) protrude out of the surfaces of the clamping grooves (13), a placing groove (18) is formed in the clamping grooves (13) towards the second spring (16) matching clamping heads (17), the shell (5) is rotatably connected with a wrench (20) through a pin shaft (19), and one end, located in the shell (5), of the wrench (20) is respectively arranged on the upper surface and the lower surface of the chuck (6), the wrench (20) rotates around the pin shaft (19), and the front end of the wrench (20) abuts against the locking block (10) to move in the through groove (12).

2. The multi-functional ladder of claim 1, characterized in that: one end of the first-level ladder frame (1) and one end of the third-level ladder frame (3) far away from the positioning and connecting mechanism are connected and provided with a supporting cross rod (25), the two ends of the supporting cross rod (25) are connected and provided with arc-shaped bases (21), and anti-slip strips (22) are uniformly laid on the lower surfaces of the arc-shaped bases (21).

3. The multi-functional ladder of claim 1, characterized in that: the limiting rotary piece (14) is provided with a connector (23), and the second spring (16) is connected to the connector (23).

4. The multi-functional ladder of claim 1, characterized in that: the adjusting device is characterized in that a torsion spring (24) is arranged on the pin shaft (19), one end of the torsion spring (24) is connected with the wrench (20), and the other end of the torsion spring is connected with the inner part of the shell (5).