CN219344592U

CN219344592U - Conveniently open and shut extension ladder transverse ladder board

Info

Publication number: CN219344592U
Application number: CN202320271096.XU
Authority: CN
Inventors: 陈晓亮
Original assignee: Zhejiang Langjun Industry And Trade Co ltd
Current assignee: Zhejiang Langjun Industry And Trade Co ltd
Priority date: 2023-02-21
Filing date: 2023-02-21
Publication date: 2023-07-14
Anticipated expiration: 2033-02-21

Abstract

The utility model discloses a conveniently opened and closed extension ladder transverse ladder plate, which comprises a ladder plate, wherein two sides of the ladder plate are respectively connected with a connecting sleeve through a connecting piece, a locking switch is arranged in the center of the ladder plate, the left side and the right side of the locking switch are connected with an extension mechanism, the end part of the extension mechanism penetrates through the connecting piece and enters the connecting sleeve, the locking switch comprises a locking plate positioned in the ladder plate and a knob positioned outside the ladder plate, the knob is connected with the locking plate through a rotating shaft, one end, close to the locking plate, of the extension mechanism is provided with a movable groove matched with the locking plate, the locking plate is positioned in the range of the two movable grooves, and when the locking plate rotates, the locking plate pushes the groove walls of the two movable grooves to drive the other end of the extension mechanism to be pulled out of the connecting sleeve. According to the utility model, the expansion of the telescopic rods at two sides is realized through one-key opening and closing of the locking switch, so that the transverse plate is fixedly connected with the upright post of the connecting sleeve, the locking operation of the switch is convenient, the whole ladder plate has a simple structure, the telescopic rods can keep a locking state through the restoring springs, and the overall stability is improved.

Description

Conveniently open and shut extension ladder transverse ladder board

Technical Field

The utility model relates to the technical field of extension ladders, in particular to a transverse ladder plate of an extension ladder, which is convenient to open and close.

Background

The use of ladder frames has become an indispensable tool for people, such as climbing devices for ladders or scaffolds, and is an effective tool for people to easily and quickly obtain articles located at high places.

Chinese patent CN200880131240.8 discloses an improved telescopic ladder structure comprising a plurality of ladder column units, a connecting sleeve, a locking mechanism and a transverse ladder plate; the ladder column units are hollow ladder pipes, the higher the position and the smaller the pipe diameter, the upper section of ladder column units and the lower section of ladder column units can be mutually telescopic sleeved, and a clamping mechanism is arranged between the upper section of ladder column units and the lower section of ladder column units, so that the upper section of ladder column units and the lower section of ladder column units cannot be separated when the telescopic ladder is stretched; the upper end of each ladder column unit is provided with a connecting sleeve, the connecting sleeve is transversely arranged, the upper end of the connecting sleeve is provided with a fixed protruding jacking pin, the inside of the connecting sleeve is provided with a locking mechanism, the locking mechanism is provided with a poking key, and the outside of the connecting sleeve is covered by a transverse ladder plate; when the upper connecting sleeve member is attached to the lower connecting sleeve member, the protruding ejector pin of the connecting sleeve member can push the poking key, so that the locking mechanism of the connecting sleeve member is unlocked, and the upper ladder column unit automatically falls down and is folded in sequence, thus avoiding the situation that the poking key for controlling the locking mechanism to act is touched by mistake to generate misoperation, and causing unsafe use.

The transverse ladder plate and the upright post in the telescopic ladder are firm in structure, but are complex in connection structure, complex in production and assembly process and inconvenient in use.

Disclosure of Invention

Aiming at the problems in the related art, the utility model provides a transverse ladder plate of an extension ladder, which is convenient to open and close, so as to overcome the technical problems in the prior art.

For this purpose, the utility model adopts the following specific technical scheme:

the utility model provides a conveniently open and shut's horizontal ladder board of telescopic ladder, its includes the ladder board, the left and right sides of ladder board is connected with the adapter sleeve through the connecting piece respectively, the ladder board center be equipped with locking switch, locking switch's left and right sides is connected with telescopic machanism, telescopic machanism's tip passes the connecting piece and gets into the telescopic ladder stand with in the adapter sleeve and be connected, locking switch including being located the inside locking plate of ladder board and being located the outside knob of ladder board, the knob is connected with the locking plate through the pivot, telescopic machanism be close to locking plate one end and be equipped with locking plate complex movable groove, the locking plate is located the spacing scope of two movable grooves, when the locking plate rotates, the locking plate promotes the cell wall of two movable grooves, drives telescopic machanism's the other end and pulls out from the adapter sleeve.

Preferably, the connecting piece in be equipped with and be used for telescopic machanism male mounting groove, be equipped with the hole that is used for the telescopic link tip to pass between mounting groove and the adapter sleeve, the other end of mounting groove is equipped with spacing draw-in groove.

Preferably, the telescopic machanism include telescopic link, reset spring, spacing pipe box and connecting rod, the telescopic link locate in the mounting groove, spacing pipe box cover establish on the telescopic link and install in spacing draw-in groove, the telescopic link on be equipped with first step face, be equipped with the second step face in the spacing pipe box, reset spring cover is established at the telescopic link, reset spring one end offsets with first step face, the other end offsets with the second step face, the one end of connecting rod pass through the rivet and be connected with the telescopic link, the other end of connecting rod is located to the movable groove.

Preferably, the ladder plate is of a square steel structure, a switch hole is formed in the center of the ladder plate, the locking switch is arranged in the switch hole, and the connecting piece is inserted into the ladder plate.

Preferably, the movable groove is of a trapezoid structure, when the panel of the locking plate is in contact with the right-angle side of the movable groove, the end part of the telescopic rod is inserted into the connecting sleeve, and when the panel of the locking plate is separated from the right-angle side of the movable groove, the end part of the telescopic rod is separated from the connecting sleeve.

The beneficial effects of the utility model are as follows:

according to the utility model, the expansion of the telescopic rods at two sides is realized through one-key opening and closing of the locking switch, so that the transverse plate is fixedly connected with the upright post of the connecting sleeve, the locking operation of the switch is convenient, the whole ladder plate has a simple structure, the telescopic rods can keep a locking state through the restoring springs, and the overall stability is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the internal structure of the present utility model;

FIG. 2 is a perspective view of the structure of the present utility model;

FIG. 3 is a schematic view of the telescopic mechanism of the present utility model;

FIG. 4 is a schematic view of the structure of the connector of the present utility model;

FIG. 5 is a schematic diagram of the structure of the regulating switch of the present utility model;

FIG. 6 is a schematic view of the telescopic rod of the present utility model;

FIG. 7 is a schematic view of a limiting sleeve according to the present utility model;

in the figure:

1. a ladder plate; 2. a connecting piece; 3. connecting sleeves; 4. an adjusting switch; 5. a telescoping mechanism; 11. a switch hole; 21. a mounting groove; 22. a hole; 23. a limit clamping groove; 41. a locking plate; 42. a knob; 43. a rotating shaft; 51. a telescopic rod; 52. a return spring; 53. a limiting pipe sleeve; 54. a connecting rod; 55. a first step surface; 56. a second step surface; 57. a rivet; 58. a movable groove.

Detailed Description

For the purpose of further illustrating the various embodiments, the present utility model provides the accompanying drawings, which are a part of the disclosure of the present utility model, and which are mainly used to illustrate the embodiments and, together with the description, serve to explain the principles of the embodiments, and with reference to these descriptions, one skilled in the art will recognize other possible implementations and advantages of the present utility model, wherein elements are not drawn to scale, and like reference numerals are generally used to designate like elements.

According to the embodiment of the utility model, the transverse ladder of the telescopic ladder is convenient to open and close.

Referring to the drawings and the specific embodiments, as shown in fig. 1-7, an extension ladder transverse ladder plate convenient to open and close according to the embodiment of the utility model comprises a ladder plate 1, wherein the left side and the right side of the ladder plate 1 are respectively connected with a connecting sleeve 3 through a connecting piece 2, a locking switch 4 is arranged at the center of the ladder plate 1, the left side and the right side of the locking switch 4 are connected with extension mechanisms 5, the end parts of the extension mechanisms 5 penetrate through the connecting piece 2 and enter an extension ladder upright post connected with the connecting sleeve 3, the locking switch 4 comprises a locking plate 41 positioned in the ladder plate 1 and a knob 42 positioned outside the ladder plate 1, the knob 42 is connected with the locking plate 41 through a rotating shaft 43, one end of the extension mechanism 5 close to the locking plate 41 is provided with a movable groove 58 matched with the locking plate 41, the locking plate 41 is positioned in the limit range of the two movable grooves 58, and when the locking plate 41 rotates, the locking plate 41 pushes the groove walls of the two movable grooves 58 so as to drive the other ends of the extension mechanisms 5 to be pulled out from the connecting sleeve 3.

In the embodiment of the application, the connecting piece 2 is provided with a mounting groove 21 for inserting the telescopic mechanism 5, a hole 22 for passing through the end of the telescopic rod 51 is arranged between the mounting groove 21 and the connecting sleeve 3, and the other end of the mounting groove 21 is provided with a limiting clamping groove 23. The telescopic mechanism 5 comprises a telescopic rod 51, a return spring 52, a limiting pipe sleeve 53 and a connecting rod 54, wherein the telescopic rod 51 is arranged in the mounting groove 21, the limiting pipe sleeve 53 is sleeved on the telescopic rod 51 and is arranged in the limiting clamping groove 23, a first step surface 55 is arranged on the telescopic rod 51, a second step surface 56 is arranged in the limiting pipe sleeve 53, the return spring 52 is sleeved on the telescopic rod 51, one end of the return spring 52 abuts against the first step surface 55, the other end abuts against the second step surface 56, one end of the connecting rod 54 is connected with the telescopic rod 51 through a rivet 57, and the movable groove 58 is arranged at the other end of the connecting rod 54.

In the embodiment of the application, the ladder board 1 be square steel construction, the central point of ladder board 1 put and is equipped with switch hole 11, locking switch 4 install in switch hole 11, connecting piece 2 insert inside the ladder board 1, movable groove 58 be trapezoidal structure, when the panel of locking plate 41 and the right-angle limit contact of movable groove 58, the tip of telescopic link 51 inserts in adapter sleeve 3, when the panel of locking plate 41 leaves the right-angle limit of movable groove 58, the tip of telescopic link 51 leaves adapter sleeve 3.

The principle of the utility model is as follows:

when the end of the telescopic rod 51 is inserted into the connecting sleeve 3, as shown in fig. 1, at this time, the ladder plate 1 is connected with the upright post in the connecting sleeve 3, the return spring 52 is in an extended state, two sides of the locking plate 41 are contacted with two right-angle surfaces of the movable groove 58, the knob 42 is rotated clockwise, two sides of the locking plate 41 are separated from the two right-angle surfaces of the movable groove 58, the connecting rod 54 is closed towards the middle to drive the telescopic rod 51 to retract from the connecting sleeve 3, the return spring 52 is compressed, and the ladder plate 1 can be disconnected with the upright post in the connecting sleeve 3.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. The utility model provides a conveniently open and shut's horizontal ladder board of telescopic ladder, its characterized in that, it includes the ladder board, the left and right sides of ladder board is connected with the adapter sleeve through the connecting piece respectively, ladder board center be equipped with locking switch, locking switch's left and right sides is connected with telescopic machanism, telescopic machanism's tip pass the connecting piece get into the telescopic ladder stand with in the adapter sleeve be connected, locking switch including being located the inside locking plate of ladder board and being located the outside knob of ladder board, the knob is connected with the locking plate through the pivot, telescopic machanism be close to locking plate one end and be equipped with locking plate complex movable groove, the locking plate is located the spacing scope of two movable grooves, when the locking plate rotates, the locking plate promotes the cell wall of two movable grooves, drives telescopic machanism's the other end and pulls out from the adapter sleeve.

2. The telescopic ladder transverse ladder plate convenient to open and close according to claim 1, wherein the connecting piece is provided with a mounting groove for inserting the telescopic mechanism, a hole for allowing the end part of the telescopic mechanism to pass through is formed between the mounting groove and the connecting sleeve, and the other end of the mounting groove is provided with a limiting clamping groove.

3. The telescopic ladder transverse ladder plate convenient to open and close according to claim 2, wherein the telescopic mechanism comprises a telescopic rod, a reset spring, a limiting pipe sleeve and a connecting rod, the telescopic rod is arranged in the installation groove, the limiting pipe sleeve is sleeved on the telescopic rod and is arranged in the limiting clamping groove, a first step surface is arranged on the telescopic rod, a second step surface is arranged in the limiting pipe sleeve, the reset spring is sleeved on the telescopic rod, one end of the reset spring abuts against the first step surface, the other end of the reset spring abuts against the second step surface, one end of the connecting rod is connected with the telescopic rod through a rivet, and the movable groove is arranged at the other end of the connecting rod.

4. The telescopic ladder transverse ladder plate convenient to open and close according to claim 1, wherein the ladder plate is of a square steel structure, a switch hole is formed in the center of the ladder plate, the locking switch is arranged in the switch hole, and the connecting piece is inserted into the ladder plate.

5. The extension ladder transverse ladder plate convenient to open and close according to claim 3, wherein the movable groove is of a trapezoid structure, when the panel of the locking plate is in contact with the right-angle side of the movable groove, the end portion of the extension rod is inserted into the connecting sleeve, and when the panel of the locking plate is separated from the right-angle side of the movable groove, the end portion of the extension rod is separated from the connecting sleeve.