Drawing type folding ladder

Abstract

The utility model discloses a drawing type folding ladder which comprises a main ladder and an auxiliary ladder, the bottom of the main ladder is rotatably connected with the auxiliary ladder through a movable connecting piece, the main ladder comprises a first vertical frame and a second vertical frame, transverse frames are fixed on the first vertical frame at equal intervals, and a plurality of transverse frames penetrate through the second vertical frame in a sliding mode. The section, located outside the second vertical frame, of the transverse frame is fixedly sleeved with a stop block, and the end, located outside the second vertical frame, of the transverse frame is connected with a sliding connecting piece. The main ladder and the auxiliary ladder can be rotatably folded, the first vertical frame of the main ladder is matched with the transverse frame and can be movably adjusted relative to the second vertical frame in a drawing mode, folding sliding storage is achieved, the folding ladder is suitable for narrow space and used in engineering vehicles, special vehicles and other vehicles, space is not occupied, a carriage can be made larger on the original basis, and the folding ladder is convenient to use. The compartment space utilization rate is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of climbing tools, in particular to a pull-out folding ladder. Background Art

[0002] Currently, in the field of vehicle-mounted climbing equipment technology, various ladders are used for rooftop operations on engineering vehicles and special vehicles. These vehicle-mounted climbing tools are mainly divided into two categories: fixed, detachable, and automatically loaded and unloaded. The fixed type means that the main body of the ladder is fixed to the outer wall of the carriage, usually installed at the rear of the carriage. There is no need to store the ladder inside the carriage, which is convenient and can improve the utilization rate of the carriage; the detachable type means that the ladder is generally stored inside the carriage and is hung on the outer wall of the carriage when in use, which is more flexible; the automatically loaded and unloaded type means that the ladder is fixed to the outer wall of the carriage and can be automatically loaded and unloaded through program control, which is highly automated. The present utility model specifically belongs to a fixed type ladder.

[0003] There are limited locations for installing fixed ladders on vehicles like construction vehicles and special-purpose vehicles: the space between the cab and the vehicle body is relatively narrow; placement on the sides of the vehicle body would compromise internal storage space, creating an unsightly effect; and the rear of the vehicle body would require significant operating space. Existing fixed ladders have a significant drawback: they require very high longitudinal operating space. They are not well suited for placement elsewhere on the vehicle, except at the rear. Most fixed ladders are not well suited for the narrow space between the cab and the vehicle body. Utility Model Content

[0004] The object of the present invention is to provide a pull-out folding ladder to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solution: a pull-out folding ladder, comprising: a main ladder and an auxiliary ladder, wherein the bottom of the main ladder is rotatably connected to the auxiliary ladder through a movable connecting piece.

[0006] The main ladder includes a first vertical frame and a second vertical frame, wherein cross frames are fixed on the first vertical frame at equal intervals, and a plurality of cross frames slide through the second vertical frame, and the cross frames are located on the outer section of the second vertical frame and are fixedly sleeved with stop blocks;

[0007] One end of the horizontal frame located outside the second vertical frame is connected with a sliding connection piece.

[0008] As a further description of the above technical solution:

[0009] The sliding connection member includes a slider, and a guide rail is slidably connected to the slider, and the guide rail is connected to the end of the cross frame.

[0010] As a further description of the above technical solution:

[0011] The movable connecting part includes a connecting frame, one end of which is fixed to the first vertical frame, and the other end is fixed to the end of the horizontal frame. Connecting seats are symmetrically fixed on the connecting frame, and a connecting piece is rotatably connected to the connecting seat, and the connecting piece is connected to the top of the auxiliary ladder.

[0012] As a further description of the above technical solution:

[0013] Two limiting frames are symmetrically fixed on the outer side of the connecting frame. When the auxiliary ladder is rotated to open, the frames on both sides of the auxiliary ladder are embedded in the two limiting frames.

[0014] As a further description of the above technical solution:

[0015] A pull handle is fixed on the outer side of the first frame, and a lock buckle for fixing the auxiliary ladder is also provided on the outer side of the first frame.

[0016] As a further description of the above technical solution:

[0017] Rubber pads are fixed on the side frames of the auxiliary ladder and the first vertical frame.

[0018] As a further description of the above technical solution:

[0019] The first stand and the second stand are provided with fixing holes for use with locking pins at corresponding positions. When the first stand slides and fits against the second stand, the fixing holes on the first stand and the second stand overlap and align.

[0020] The utility model provides a pull-out folding ladder with the following beneficial effects:

[0021] The plate shearing machine is provided with an automatic plate fixing mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the folding state of a pull-out folding ladder proposed by the present invention;

[0023] Figure 2 This is a schematic diagram of the unfolded state of a pull-out folding ladder proposed by the present invention;

[0024] Figure 3 This is a schematic structural diagram of the main ladder in the present utility model;

[0025] Figure 4 This is a schematic structural diagram of the movable connecting member in the present utility model;

[0026] Figure 5 This is a schematic structural diagram of the auxiliary ladder in the present utility model;

[0027] Figure 6This is a schematic structural diagram of the sliding connector in the present invention;

[0028] Figure 7 The utility model is a schematic diagram of the assembly of a pull-out folding ladder.

[0029] Legend:

[0030] 1. Main ladder; 11. First vertical frame; 12. Second vertical frame; 13. Cross frame; 14. Stop block; 15. Pull-out handle; 16. Lock; 2. Movable connector; 20. Connecting frame; 21. Connecting seat; 22. Connecting piece; 23. Limiting frame; 3. Auxiliary ladder; 31. Rubber pad; 4. Sliding connector; 41. Guide rail; 42. Slider; 5. Locking pin. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] Reference Figure 1-7 A pull-out folding ladder comprises: a main ladder 1 and an auxiliary ladder 3. The bottom of the main ladder 1 is rotatably connected to the auxiliary ladder 3 via a movable connecting member 2. Specifically, the main ladder 1 and the auxiliary ladder 3 are rotatably connected via the movable connecting member 2, so that the main ladder 1 and the auxiliary ladder 3 have two states. In the first state, the main ladder 1 and the auxiliary ladder 3 are in a folded and fitted storage state. In the second state, the bottom of the main ladder 1 and the top of the auxiliary ladder 3 are docked to form an unfolded working state. The main ladder 1 comprises a first vertical frame 11 and a second vertical frame 12. Horizontal frames 13 are fixed on the first vertical frame 11 at equal intervals, and multiple horizontal frames 13 slide through the second vertical frame 12. The horizontal frames 13 are located on the outer section of the second vertical frame 12 and are fixedly sleeved with stop blocks 14; that is, the first vertical frame 11 can drive multiple horizontal frames 13 to be pulled, slid and adjusted on the second vertical frame 12, and the stop blocks 14 are used to limit the pulling spacing of the horizontal frames 13.

[0033] One end of the horizontal frame 13, located outside the second vertical frame 12, is connected to a sliding connector 4. This connector 4 includes a slider 42, to which a guide rail 41 is slidably connected. This guide rail 41 is connected to the end of the horizontal frame 13. The slider 42 of the sliding connector 4 is fixed to the vehicle body on which the retractable folding ladder is mounted, and in conjunction with the guide rail 41, it connects to the horizontal frame 13, providing auxiliary support and fixation for the horizontal frame 13, thereby improving the stability of the retractable folding ladder.

[0034] The main ladder 1 and the auxiliary ladder 3 of the pull-out folding ladder can be rotated and folded, and the first vertical frame 11 of the main ladder 1 can cooperate with the horizontal frame 13 to be pulled and adjusted relative to the second vertical frame 12 to achieve folding and sliding storage. It is suitable for narrow spaces and can be used in engineering vehicles, special vehicles and other vehicles without taking up space. The carriage can be made larger on the original basis, and the carriage space utilization rate is higher. At the same time, it has a simple structure and is easy to operate.

[0035] The movable connecting member 2 includes a connecting frame 20, one end of which is fixed to the first vertical frame 11, and the other end is fixed to the end of the horizontal frame 13. A connecting seat 21 is symmetrically fixed on the connecting frame 20, and a connecting piece 22 is rotatably connected to the connecting seat 21, and the connecting piece 22 is connected to the top of the auxiliary ladder 3.

[0036] Two limit frames 23 are symmetrically fixed to the outside of the connecting frame 20. When the auxiliary ladder 3 is rotated to open, the two side frames of the auxiliary ladder 3 are embedded in the two limit frames 23. The limit frames 23 are used to limit the auxiliary ladder 3 when it is opened, further improving the stability during climbing.

[0037] A pull handle 15 is fixed to the outside of the first upright frame 11. A lock 16 for securing the auxiliary ladder 3 is also provided on the outside of the first upright frame 11. Rubber pads 31 are fixed to the side frames of the auxiliary ladder 3 corresponding to the first upright frame 11. When not in use, the auxiliary ladder 3 is folded parallel to the main ladder 1 and fixed together by the lock 16. However, at this time, there is a gap between the two, and the fixation is not firm. Rubber pads 31 are fixed to the side frames of the auxiliary ladder 3 corresponding to the first upright frame 11. When the lock 16 is locked, the rubber pads 31 are elastically supported against the first upright frame 11 of the main ladder 1, improving the stability of the fixation.

[0038] It also includes a locking pin 5. The first upright frame 11 and the second upright frame 12 are provided with fixing holes for use with the locking pin 5 at corresponding positions. Optionally, the first upright frame 11 is a square tube structure, and the second upright frame 12 is a U-shaped channel steel structure. When the first upright frame 11 slides and fits with the second upright frame 12, the fixing holes on the first upright frame 11 and the second upright frame 12 overlap and align. At this time, the first upright frame 11 and the second upright frame 12 are fixed together by the locking pin 5. When the pull-out folding ladder is used: to get out of the ladder - pull out the locking pin 5, pull out the first upright frame 11 and the horizontal frame 13 of the main ladder 1 together with the auxiliary ladder 3 through the pull-out handle 15, open the lock 16, and rotate the auxiliary ladder 3 to the specified position. The process of getting out of the ladder is completed. When folding the ladder, the above process is operated in the opposite order.

[0039] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0040] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pull-out folding ladder, comprising: A main ladder (1) and an auxiliary ladder (3), wherein the bottom of the main ladder (1) is rotatably connected to the auxiliary ladder (3) via a movable connecting member (2), and is characterized in that: The main ladder (1) comprises a first vertical frame (11) and a second vertical frame (12); horizontal frames (13) are fixed on the first vertical frame (11) at equal intervals, and a plurality of horizontal frames (13) slide through the second vertical frame (12); the horizontal frames (13) are located on the outer section of the second vertical frame (12) and are fixedly sleeved with stop blocks (14); The horizontal frame (13) is located outside the second vertical frame (12), and one end thereof is connected to a sliding connection member (4).

2. A pull-out folding ladder according to claim 1, characterized in that: The sliding connection member (4) includes a slider (42), and a guide rail (41) is slidably connected to the slider (42), and the guide rail (41) is connected to the end of the cross frame (13).

3. The pull-out folding ladder according to claim 1, characterized in that: The movable connecting member (2) includes a connecting frame (20), one end of which is fixed to the first vertical frame (11), and the other end is fixed to the end of the horizontal frame (13), a connecting seat (21) is symmetrically fixed to the connecting frame (20), and a connecting piece (22) is rotatably connected to the connecting seat (21), and the connecting piece (22) is connected to the top end of the auxiliary ladder (3).

4. A pull-out folding ladder according to claim 3, characterized in that: Two limiting frames (23) are symmetrically fixed on the outer side of the connecting frame (20); when the auxiliary ladder (3) is rotated and opened, the two side frames of the auxiliary ladder (3) are embedded in the two limiting frames (23).

5. The pull-out folding ladder according to claim 1, characterized in that: A pull handle (15) is fixed on the outside of the first upright frame (11), and a lock buckle (16) for fixing the auxiliary ladder (3) is also provided on the outside of the first upright frame (11).

6. The pull-out folding ladder according to claim 1, characterized in that: A rubber pad (31) is fixed on the side frame of the auxiliary ladder (3) and the first upright frame (11) corresponding to the side frame.

7. The pull-out folding ladder according to claim 1, characterized in that: The invention also includes a locking pin (5), and fixing holes for cooperating with the locking pin (5) are provided at corresponding positions of the first stand (11) and the second stand (12). When the first stand (11) slides and fits with the second stand (12), the fixing holes on the first stand (11) and the second stand (12) overlap and align.

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