Antiskid device of extension ladder

Abstract

The utility model discloses an anti-skid device of an extension ladder, which comprises two fixed pipes, the side surfaces of the two fixed pipes are fixedly connected with mounting racks, an adjusting assembly is arranged in one mounting rack, the adjusting assembly is connected with two supporting rods, the top ends of the two supporting rods are hinged to the middle of a first connecting rack, and the top ends of the two supporting rods are hinged to the middle of the first connecting rack. The top end of the first connecting frame is hinged to the top ends of the side faces of the two mounting frames, a first supporting leg is hinged to the bottom end of the first connecting frame, a limiting assembly is arranged on the top face of one mounting frame, an extension plate is fixedly connected to the bottom face of the fixing pipe, and a second supporting leg is hinged to the bottom end of the extension plate. When the telescopic ladder is used, the inclination angle of the first connecting frame is adjusted through the adjusting assembly, so that the telescopic ladder is suitable for telescopic ladders with different lengths, the T-shaped handle is limited through the limiting assembly, the threaded rod is prevented from rotating during use, and the anti-skid effect is improved through anti-skid grains on the bottom surfaces of the first supporting leg and the second supporting leg.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of telescopic ladder, concretely is a telescopic ladder's antiskid device. BACKGROUND

[0002] Telescopic ladder can stretch and shorten, usually have lighter weight, shorten after having shorter height, convenient to carry, use, according to need stretch to predetermined length, can bear certain weight, can be used in a variety of need to climb the operation occasion.

[0003] Telescopic ladder in the process of using, the area of telescopic ladder bottom and ground contact is small, generally still need a person to hold telescopic ladder in the following, to prevent the bottom of straight ladder from sliding, cause the danger of using personnel, cause safety accident. UTILITY MODEL CONTENTS

[0004] The utility model discloses a telescopic ladder's antiskid device to solve the problem in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a telescopic ladder's antiskid device, including two fixed tubes, two fixed tubes side surface all are fixedly connected with mount frame, one mount frame is internally provided with adjusting assembly, adjusting assembly is connected with two support rods, two support rods top end is hinged in first connecting frame middle part, first connecting frame top end is hinged in two mount frame side surface top end, first connecting frame bottom end is hinged with first support foot, one mount frame top surface sets up with limiting component, fixed tube bottom surface is fixedly connected with extension plate, and extension plate bottom end is hinged with second support foot.

[0006] Preferably, the adjusting assembly includes a threaded rod, the threaded rod bottom end is rotatably connected in one mount frame inner surface, the threaded rod top end penetrates the mount frame and is hinged with a connecting block, the connecting block surface is fixedly connected with a T-shaped handle, the threaded rod is screw connected with a U-shaped slide rod, and two support rods bottom ends are hinged in the U-shaped slide rod two ends.

[0007] Preferably, the extension plate includes a limiting frame, the limiting frame is fixedly connected to the top surface of one mount frame, the limiting frame is U-shaped, and clamping grooves are formed in the two ends of the limiting frame.

[0008] Preferably, the second connecting frame is fixedly connected to the opposite sides of the two fixed tubes.

[0009] Preferably, the bottom surface of the first support foot and the second support foot is provided with anti-skid lines.

[0010] Preferably, the U-shaped slide rod is slidably connected with a connecting rod at the end away from the threaded rod, and the connecting rod is fixedly connected to the inner side wall of the other mount frame.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] The utility model discloses in using, through T handle drive connecting block rotation, make connecting block drive threaded rod rotation, U slide bar drive support rod remove to adjust the inclination angle of first connecting frame to be suitable for the telescopic ladder of different length and use, the T handle is clamped in the clamping groove of spacing frame to position threaded rod, avoid threaded rod to rotate in using, support through first support foot and second support foot, and the antiskid pattern of its bottom surface improves the antiskid effect. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is whole structure schematic diagram of the utility model;

[0014] Figure 2 It is side surface section structure schematic diagram of the utility model;

[0015] Figure 3 It is partial structure schematic diagram of the utility model;

[0016] Figure 4 It is Figure 1 A part of amplification structure schematic diagram of the utility model.

[0017] In the drawing: 1, fixed pipe;2, mounting frame;3, adjusting assembly;31, threaded rod;32, connecting block;33, T handle;34, U slide bar;4, support rod;5, first connecting frame;6, first support foot;7, spacing assembly;71, spacing frame;72, clamping groove;8, extension plate;9, second support foot;10, second connecting frame;11, antiskid pattern;12, connecting rod. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the utility model.

[0019] Please refer to Figures 1-4The utility model provides a technical scheme: A telescopic ladder's antiskid device, including two fixed tubes 1, the mounting bracket 2 is installed in two fixed tubes 1 side through bolt, adjustment assembly 3 is installed in one mounting bracket 2 inside, two support bars 4 top end is hinged in the middle of first connecting frame 5 through pin shaft, first connecting frame 5 top end is hinged in two mounting bracket 2 side top end through hinge, first support foot 6 is hinged in first connecting frame 5 bottom end through pin shaft, limiting assembly 7 is installed in one mounting bracket 2 top surface, extension plate 8 is welded in fixed tube 1 bottom, second support foot 9 is hinged in extension plate 8 bottom end through pin shaft.

[0020] Adjustment assembly 3 includes threaded rod 31, threaded rod 31 bottom end is rotatably installed in one mounting bracket 2 inner surface through bearing, threaded rod 31 top end is passed mounting bracket 2 and is hinged with connecting block 32 through pin shaft, T-shaped handle 33 is welded in connecting block 32 surface, U-shaped slide rod 34 one end is connected with threaded rod 31 threadedly, two support bars 4 bottom end are hinged in U-shaped slide rod 34 both ends through pin shaft.

[0021] Extension plate 8 includes limiting frame 71, limiting frame 71 is installed in one mounting bracket 2 top surface through bolt, limiting frame 71 is U-shaped, clamping groove 72 is set up in limiting frame 71 both ends.

[0022] Second connecting frame 10 is welded in two fixed tubes 1 opposite sides.

[0023] First support foot 6, second support foot 9 bottom surface all are set up with antiskid line 11.

[0024] Connecting rod 12 is slidably connected with the one end of U-shaped slide rod 34 away from threaded rod 31, and the both ends of connecting rod 12 are installed in the inner side wall of the other mounting bracket 2 through bolts.

[0025] Working principle: when the utility model is used, the bottom end of the telescopic ladder is bolted to the inner side of the fixed tube 1, when the telescopic ladder is used, the connecting block 32 is rotated by the T-shaped handle 33, the threaded rod 31 is rotated by the connecting block 32, the support bar 4 is moved by the U-shaped slide rod 34, so as to adjust the inclination angle of the first connecting frame 5, so as to be suitable for telescopic ladders of different lengths, the T-shaped handle 33 is clamped in the clamping groove 72 of the limiting frame 71, so as to limit the threaded rod 31, avoid the threaded rod 31 from rotating when in use, the first support foot 6 and the second support foot 9 are used for supporting, and the antiskid lines on the bottom surfaces improve the antiskid effect, the utility model has the advantages of convenient use and good use effect.

[0026] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0027] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. An anti-slip device for a telescopic ladder, comprising two fixed tubes (1), characterized in that: Two mounting brackets (2) are fixedly connected to the sides of the two fixed tubes (1). An adjustment component (3) is provided inside one of the mounting brackets (2). The adjustment component (3) is connected to two support rods (4). The top ends of the two support rods (4) are hinged to the middle of the first connecting bracket (5). The top end of the first connecting bracket (5) is hinged to the top of the sides of the two mounting brackets (2). The bottom end of the first connecting bracket (5) is hinged to a first support foot (6). A limit component (7) is provided on the top surface of one of the mounting brackets (2). An extension plate (8) is fixedly connected to the bottom surface of the fixed tube (1). The bottom end of the extension plate (8) is hinged to a second support foot (9).

2. The anti-slip device for a telescopic ladder according to claim 1, characterized in that: The adjustment component (3) includes a threaded rod (31), the bottom end of which is rotatably connected to the inner surface of a mounting bracket (2), the top end of which passes through the mounting bracket (2) and is hinged to a connecting block (32), a T-shaped handle (33) is fixedly connected to the surface of the connecting block (32), and a U-shaped slide rod (34) is threadedly connected to the threaded rod (31), with the bottom ends of the two support rods (4) hinged to the two ends of the U-shaped slide rod (34).

3. The anti-slip device for a telescopic ladder according to claim 1, characterized in that: The extension plate (8) includes a limiting frame (71), which is fixedly connected to the top surface of a mounting frame (2). The limiting frame (71) is U-shaped and has slots (72) at both ends.

4. The anti-slip device for a telescopic ladder according to claim 1, characterized in that: The two fixed tubes (1) are fixedly connected to the opposite sides by a second connecting bracket (10).

5. The anti-slip device for a telescopic ladder according to claim 1, characterized in that: The bottom surfaces of the first support foot (6) and the second support foot (9) are both provided with anti-slip texture (11).

6. The anti-slip device for a telescopic ladder according to claim 2, characterized in that: The U-shaped slide bar (34) is slidably connected to a connecting rod (12) at the end away from the threaded rod (31), and the two ends of the connecting rod (12) are fixedly connected to the inner side wall of another mounting bracket (2).

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