Safe telescopic standard knot ladder stand

Abstract

The utility model discloses a safe telescopic standard knot crawling ladder, which relates to the technical field of crawling ladders and comprises a main ladder. Extension ladder sliding frames are welded to the two inner sides of the main ladder, an extension ladder is connected between the two extension ladder sliding frames in a sliding mode, and locking frames are connected to mounted bearings on the two inner sides of the extension ladder in a matched mode; a linkage rod is welded between the two locking frames, one end of the linkage rod is connected with a rotating air cylinder in a matched mode, and the rotating air cylinder is fixed to the telescopic ladder sliding frame through a bolt. According to the utility model, the extension ladder is connected to the extension ladder carriage of the main ladder in a sliding manner, and the linkage rod on the inner side of the extension ladder rotates, so that the extension ladder is quickly locked by the two locking frames, the shaking condition is prevented, and the rotating cylinder provides power for the locking of the locking frames.

Description

Technical Field

[0001] The utility model relates specifically to the technical field of ladders, in particular to a safe and retractable standard-section ladder. Background Art

[0002] A tower crane, also known as a "tower crane," is a type of lifting equipment used in construction. Industry classification: Machinery -> Construction Machinery -> Hoisting Machinery -> Construction Hoisting Machinery -> Tower Crane.

[0003] Chinese Utility Model Publication No. CN 217380383 U discloses a telescopic ladder comprising: a main body having a fixed mounting structure at its upper end; and a tilting support structure disposed on the main body, the tilting support structure enabling the main body to be tilted. During use, when the lower end of the main body is a certain distance from the ground, the fixed mounting structure at the upper end of the main body is secured to a scaffold, and the tilting support structure allows the main body to be tilted and aligned with the scaffold.

[0004] The above-mentioned telescopic ladder uses an inclined supporting structure to tilt the main body of the telescopic ladder to match the scaffolding. However, it is inconvenient to quickly fix and lock it on a fixed tower crane, and the self-locking function cannot be achieved, which may cause shaking. For this reason, we provide a safe and retractable standard-section ladder, which uses a linkage rod to drive two locking frames to lock the telescopic ladder, making it more convenient to clamp and prevent shaking. Secondly, the main ladder and the telescopic ladder can be quickly fixed to the tower crane, which is more convenient to use and effectively compensates for the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to provide a safe and retractable standard-section ladder to solve the problems raised in the background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A safe and retractable standard-section ladder comprises a main ladder; telescopic ladder slides are welded on both inner sides of the main ladder, and a telescopic ladder is slidably connected between the two telescopic ladder slides, and locking frames are cooperatively connected to the seat bearings on both inner sides of the telescopic ladder; a linkage rod is welded between the two locking frames, and one end of the linkage rod is cooperatively connected to a rotating cylinder, which is fixed to the telescopic ladder slide by bolts.

[0008] As a further technical solution of the present invention, main ladder cylinders are provided at both ends of the main ladder, and two are provided at each end. Secondly, the two main ladder cylinders at the same end are arranged opposite to each other, and the push rods of the main ladder cylinders are connected with the main body pressing plates.

[0009] As a further technical solution of the present invention, the main ladder cylinder is fixed to the side bracket by bolts, and the side bracket is welded to the main ladder.

[0010] As a further technical solution of the present invention, a telescopic ladder cylinder is fixed to one end of the telescopic ladder away from the main ladder by bolts, and the two telescopic ladder cylinders are arranged opposite to each other.

[0011] As a further technical solution of the present invention, a push rod of the telescopic ladder cylinder is cooperatively connected with a telescopic ladder pressing plate.

[0012] As a further technical solution of the present invention, the locking frame is arranged in a J-shape.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. In this utility model, the telescopic ladder is slidably connected to the telescopic ladder carriage of the main ladder. The linkage rod on the inner side of the telescopic ladder rotates, thereby allowing the two locking frames to quickly lock the telescopic ladder to prevent shaking. The rotating cylinder provides power for the locking frames to lock.

[0015] 2. In this utility model, the push rod of the main ladder cylinder pushes the main pressing plate to lock and fix the main section of the tower crane, and the side bracket plays a supporting role;

[0016] 3. In the present invention, the push rod of the telescopic ladder cylinder pushes the telescopic ladder pressing plate to lock the other end of the telescopic ladder on the telescopic section of the tower crane. The telescopic ladder can be extended along with the telescopic section of the tower crane, which is more convenient to use. The locking frame facilitates the locking of the telescopic ladder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural diagram of the utility model.

[0018] Figure 2 This utility model Figure 1 Right view of .

[0019] Figure 3 This utility model Figure 1 A partial enlarged view of point A.

[0020] Figure 4 This utility model Figure 1 A partial enlarged view of point B.

[0021] Figure 5 This utility model Figure 1 A partial enlarged view of point C.

[0022] In the figure: 1-main ladder, 2-telescopic ladder slide, 3-telescopic ladder, 4-rotating cylinder, 5-linkage rod, 6-locking frame, 7-side bracket, 8-main ladder cylinder, 9-main body pressing plate, 10-telescopic ladder cylinder, 11-telescopic ladder pressing plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-5 In an embodiment of the utility model, a safe and retractable standard-section ladder comprises a main ladder 1; telescopic ladder slides 2 are welded on both inner sides of the main ladder 1, and a telescopic ladder 3 is slidably connected in the middle of the two telescopic ladder slides 2, and locking frames 6 are matched and connected on the seat bearings on both inner sides of the telescopic ladder 3; a linkage rod 5 is welded in the middle of the two locking frames 6, and one end of the linkage rod 5 is matched and connected to a rotating cylinder 4, which is fixed to the telescopic ladder slide 2 by bolts.

[0025] By adopting the above technical solution, the telescopic ladder 3 is slidably connected to the telescopic ladder slide 2 of the main ladder 1, and the linkage rod 5 on the inner side of the telescopic ladder 3 rotates, so that the two locking frames 6 quickly lock the telescopic ladder 3 to prevent shaking, and the rotating cylinder 4 provides power for locking the locking frames 6.

[0026] In this embodiment, main ladder cylinders 8 are provided at both ends of the main ladder 1, and two are provided at each end. Secondly, the two main ladder cylinders 8 at the same end are arranged opposite to each other, and the push rods of the main ladder cylinders 8 are connected with the main body pressing plates 9.

[0027] Furthermore, the main ladder cylinder 8 is fixed to the side bracket 7 by bolts, and the side bracket 7 is welded to the main ladder 1.

[0028] By adopting the above technical solution, the push rod of the main ladder cylinder 8 pushes the main body pressing plate 9 to lock and fix the main section of the tower crane, and the side bracket 7 plays a supporting role.

[0029] In this embodiment, a telescopic ladder cylinder 10 is fixed to the end of the telescopic ladder 3 away from the main ladder 1 by bolts, and the two telescopic ladder cylinders 10 are arranged opposite to each other.

[0030] Furthermore, the push rod of the telescopic ladder cylinder 10 is cooperatively connected with a telescopic ladder pressing plate 11 .

[0031] Furthermore, the locking frame 6 is arranged in a J-shape.

[0032] By adopting the above technical solution, the push rod of the telescopic ladder cylinder 10 pushes the telescopic ladder pressing plate 11 to lock the other end of the telescopic ladder 3 on the telescopic section of the tower crane, so that it can move and extend along with the telescopic section of the tower crane, which is more convenient to use. The locking frame 6 facilitates the locking of the telescopic ladder 3.

[0033] When the lifting ladder 3 is lowered, the lifting frame 6 is tightened to the lifting section 2 of the tower crane, and the lifting frame 6 is tightened to the lifting section 2 of the tower crane.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0035] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A safe and retractable standard section ladder, characterized by: The utility model comprises a main ladder (1); telescopic ladder slides (2) are welded on both inner sides of the main ladder (1), and a telescopic ladder (3) is slidably connected between the two telescopic ladder slides (2), and locking frames (6) are matched and connected to the seat bearings on both inner sides of the telescopic ladder (3); a linkage rod (5) is welded between the two locking frames (6), and one end of the linkage rod (5) is matched and connected to a rotating cylinder (4), and the rotating cylinder (4) is fixed to the telescopic ladder slide (2) by bolts.

2. A safe retractable standard section ladder according to claim 1, characterized in that: Both ends of the main ladder (1) are provided with main ladder cylinders (8), and two are provided at each end. Secondly, the two main ladder cylinders (8) at the same end are arranged opposite to each other, and the push rods of the main ladder cylinders (8) are matched with the main body pressing plates (9).

3. A safe retractable standard section ladder according to claim 2, characterized in that: The main ladder cylinder (8) is fixed to the side bracket (7) by bolts, and the side bracket (7) is welded to the main ladder (1).

4. The safe retractable standard section ladder according to claim 1, characterized in that: The telescopic ladder (3) is fixed with a telescopic ladder cylinder (10) at one end away from the main ladder (1) by means of bolts, and the two telescopic ladder cylinders (10) are arranged in opposite directions.

5. The safe retractable standard section ladder according to claim 4, characterized in that: The push rod of the telescopic ladder cylinder (10) is cooperatively connected with a telescopic ladder pressing plate (11).

6. The safe retractable standard section ladder according to claim 1, characterized in that: The locking frame (6) is arranged in a J shape.

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