Climbing ladder for maintenance in elevator car

Abstract

A climbing ladder for maintenance in an elevator car comprises two ladder feet and further comprises a stabilizing frame correspondingly connected with the two ladder feet, one end of the stabilizing frame is hinged to the bottom of the corresponding ladder feet, and the other end of the stabilizing frame can be overturned up and down. The ladder feet are further provided with first fixing assemblies used for fixing the stabilizing frames to the ladder feet when the stabilizing frames are turned upwards to the ladder feet correspondingly. The stable frame is formed by splicing a plurality of frame sections, in any two spliced frame sections, a telescopic rod is arranged at the end of one frame section, and the other frame section is correspondingly provided with an insertion groove matched with the telescopic rod, so that the stable frame turned to the horizontal state can abut against the car wall of the car. And the device further comprises a second fixing assembly used for fixing the frame sections subjected to telescopic adjustment. The climbing ladder disclosed by the utility model is convenient to carry, and the stability and the safety during use can be ensured.

Description

Technical Field

[0001] The utility model relates to a climbing ladder for maintenance in an elevator car, belonging to the technical field of elevator maintenance. Background Art

[0002] As is well known, an elevator is a vertical transportation device that serves the floors in a building, is closely related to our lives, and is essential in the modern development. In order to ensure the stability, safety, and comfort of the elevator during long-term operation, it is often necessary to perform operations such as maintenance, repair, and upgrade on the interior of the elevator car. When it comes to maintenance, repair, and upgrade operations at higher positions, a climbing ladder is often used to facilitate the work of maintenance personnel.

[0003] Generally speaking, when designing a climbing ladder, it is necessary to consider both its performance in use, such as stability and safety during use, and its portability as a tool for maintenance personnel.

[0004] Chinese Patent with the authorization announcement number CN212740338 discloses a ladder for elevator installation and maintenance, which includes a support frame, a first ladder step, a second ladder step, a first sleeve, a second sleeve, a lead screw, a guide rod, and a handle. The first ladder step and the second ladder step are respectively arranged on one side of the support frame, and the first ladder step and the second ladder step are arranged in parallel. A first sleeve and a second sleeve are horizontally arranged on the first ladder step. A lead screw and a guide rod are horizontally arranged on the support frame. The first sleeve and the second sleeve are respectively sleeved on the lead screw and the guide rod. The handle is sleeved on the end of the lead screw. The connection method between the first ladder step and the support frame is the same as that between the second ladder step and the support frame. It can ensure stability and safety during use, but its overall volume is large and it is inconvenient to carry.

[0005] Chinese Patent with the authorization announcement number CN 221220329 U discloses a climbing ladder for elevator maintenance, which includes a main seat board, two fixed plates fixed to the bottom of the main seat board, and two laterally distributed side ladders rotatably arranged on the two fixed plates. Four rectangularly distributed guide rails are fixedly connected to the bottom of the main seat board. Two side seat boards are arranged below the main seat board. Two sliding sleeves are fixedly connected to the mutually approaching ends of the side seat boards. The sliding sleeves are slidably arranged on the corresponding guide rails. An adjusting component for synchronously driving the side seat boards to move is arranged at the middle position between the two fixed plates. The climbing ladder in this solution is convenient to carry, but it is easy to tip over during use, and it is difficult to ensure stability and safety. Summary of the Utility Model

[0006] Aiming at the deficiencies of the prior art, the present application provides a climbing ladder for maintenance in an elevator car, which is convenient to carry and can ensure stability and safety during use.

[0007] A climbing ladder for maintenance inside an elevator car, comprising two ladder feet, and further comprising a stabilizing frame correspondingly connected to the two ladder feet. One end of the stabilizing frame is hinged to the bottom of the corresponding ladder foot, and the other end can be turned up and down. The ladder foot is also provided with a first fixing component for fixing the stabilizing frame on the ladder foot when the corresponding stabilizing frame is turned up to the ladder foot; the stabilizing frame is formed by splicing a plurality of frame sections. Among any two spliced frame sections, one frame section is provided with a telescopic rod at its end, and the other frame section is correspondingly provided with a slot matching with the telescopic rod, so that the stabilizing frame turned to the horizontal state can abut against the car wall of the elevator car. It further comprises a second fixing component for fixing the frame section after telescopic adjustment.

[0008] Preferably, the first fixing component comprises a binding rope, or a fastening bolt, or a fastening screw.

[0009] Preferably, the second fixing component comprises a threaded rod and a fastening nut. The threaded rod is arranged on the frame section containing the slot and is connected to the telescopic rod. An installation groove for the threaded rod to move is provided on the corresponding frame section. The fastening nut is used to cooperate with the threaded rod to lock the telescopic rod in the slot.

[0010] Preferably, hinge seat parts are respectively arranged on both sides of the bottom of the ladder foot. A hinge shaft located outside the ladder foot is provided on the hinge seat part. The stabilizing frame is located outside the corresponding ladder foot and is installed on the hinge shaft.

[0011] Preferably, the stabilizing frame comprises an arc-shaped supporting surface that is in rolling contact with the outer side surface of the ladder foot. The arc-shaped supporting surface is coaxially arranged with the hinge shaft.

[0012] Preferably, a ground contact part is arranged at the bottom of the ladder foot. The ground contact part has a supporting plane that is in rolling contact with the arc-shaped supporting surface.

[0013] Preferably, the ground contact part has a first contact plane for contacting the ground.

[0014] Preferably, the hinge seat part comprises a second contact plane for contacting the car floor of the elevator car.

[0015] Preferably, a plurality of support pads are arranged on the stabilizing frame and can contact the car floor of the elevator car when the stabilizing frame is turned to the horizontal state.

[0016] In summary, the utility model has the following beneficial effects:

[0017] 1. The utility model is convenient to carry, and the stability and safety during use can be guaranteed.

[0018] 2. In the present utility model, an arc support surface that is in rolling contact with the outer side surface of the ladder foot is provided on the stabilizing frame, reducing the force and deformation on the hinge shaft, and thus the service life of the entire climbing ladder can be improved.

[0019] 3. In the present utility model, a support plane that is in rolling contact with the arc support surface is provided at the ground contact part of the ladder foot. When the stabilizing frame is turned upward and fixed on the ladder foot, the weight of the stabilizing frame presses on the support plane, which can further reduce the deformation of the hinge shaft and further improve the service life of the entire climbing ladder. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the climbing ladder when it is closed;

[0021] Figure 2 It is a schematic structural diagram of the climbing ladder when it is in use;

[0022] Figure 3 It is an assembly schematic diagram of the second fixing component;

[0023] Figure 4 It is a schematic structural diagram at the bottom position of the ladder foot;

[0024] Figure 5 For Figure 1 The enlarged view at position A in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The present utility model will be further described below in conjunction with the drawings through specific embodiments.

[0026] Embodiment:

[0027] A climbing ladder for maintenance inside an elevator car, as Figures 1-5 shown, includes two ladder feet 1, and the ladder feet 1 have steps for maintenance personnel to walk up and down.

[0028] It further includes a stabilizing frame 2 correspondingly connected to the two ladder feet 1. One end of the stabilizing frame 2 is hinged to the bottom of the corresponding ladder foot 1, and the other end can be turned up and down. A first fixing component 3 is also provided on the ladder foot 1. When the stabilizing frame 2 is turned upward to the ladder foot 1, the first fixing component 3 is used to fix the stabilizing frame 2 on the ladder foot 1, thereby reducing the overall volume of the climbing ladder and facilitating the maintenance personnel to carry. The first fixing component 3 can adopt a binding rope and fix the stabilizing frame 2 by bundling. The number of binding ropes is multiple, and screws can also be adopted. The screws pass through the ladder foot 1 and are connected to the stabilizing frame 2.

[0029] The stable frame 2 is formed by splicing multiple frame sections 21. Among any two spliced frame sections 21, one end of one frame section 21 is provided with a telescopic rod 22, and the other frame section 21 is correspondingly provided with a slot 23 that cooperates with the telescopic rod 22, aiming to enable the stable frame 2 flipped to the horizontal state to abut against the car wall of the car; it also includes a second fixing component 4 for fixing the frame section 21 after telescopic adjustment, so as to keep a stable abutting state between the stable frame 2 and the car wall, prevent the climbing ladder from tipping over during use, and achieve the stability and safety of the climbing ladder during use.

[0030] The second fixing component 4 includes a threaded rod 41 and a fastening nut 42. The threaded rod 41 is arranged on the frame section 21 containing the slot 23 and connected to the telescopic rod 22. An installation groove 24 for the threaded rod 41 to move is provided on the corresponding frame section 21. The fastening nut 42 is used to cooperate with the threaded rod 41, so that the telescopic rod 22 is pressed against the slot wall of the slot 23, thereby locking the telescopic rod 22 in the slot 23.

[0031] On both sides of the bottom of the ladder foot 1, hinge seat parts 11 are respectively provided. An articulated shaft 12 located outside the ladder foot 1 is provided on the hinge seat part 11. The stable frame 2 is located outside the corresponding ladder foot 1 and installed on the articulated shaft 12. When the stable frame 2 is flipped upwards, it can be flipped to the outer side surface of the ladder foot 1.

[0032] The stable frame 2 further includes an arc support surface 25 that is in rolling contact with the outer side surface of the ladder foot 1. The arc support surface 25 is specifically arranged on the frame section 21 closest to the articulated shaft 12. The arc support surface 25 is coaxially arranged with the articulated shaft 12. When a stable abutting state is maintained between the stable frame 2 and the car wall, part of the force transmitted from the ladder foot 1 to the stable frame 2 is transmitted to the stable frame 2 through the arc support surface 25, reducing the force and deformation on the articulated shaft 12, and thus the service life of the entire climbing ladder can be improved. If there is no such arc support surface 21, the articulated shaft 12 bears the force alone and is prone to damage.

[0033] A ground contact part 13 is provided at the bottom of the ladder foot 1. The ground contact part 13 has a support plane 131 that is in rolling contact with the arc support surface 25. When the stable frame 2 is flipped upwards and fixed on the ladder foot 1, the weight of the stable frame 2 presses on the support plane 131, which can further reduce the deformation of the articulated shaft 12 and further improve the service life of the entire climbing ladder.

[0034] The ground contact part 13 has a contact plane one 132 for contacting the ground, and contacts the ground of the car in the form of planar contact, with a large contact area and good stability of the climbing ladder.

[0035] The articulated seat body part 11 includes a second contact plane 111 for contacting the car floor, further increasing the contact area between the ladder foot 1 and the car floor and further improving the stability of the climbing ladder.

[0036] A number of support pads 26 are provided on the stable frame 2, and the support pads 26 can contact the car floor when they are turned to the horizontal state.

[0037] The above embodiments only describe the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various variations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention should fall within the protection scope of the present invention. The technical content claimed by the present invention has been fully recorded in the claims.

Claims

1. A climbing ladder for maintenance inside an elevator car, comprising two ladder feet (1), characterized in that, It further includes a stability frame (2) correspondingly connected to the two ladder feet (1). One end of the stability frame (2) is hinged to the bottom of the corresponding ladder foot (1), and the other end can be turned up and down. A first fixing component (3) is also provided on the ladder foot (1) for fixing the stability frame (2) on the ladder foot (1) when the stability frame (2) is turned up onto the ladder foot (1). The stability frame (2) is composed of a plurality of frame sections (21) spliced together. Among any two spliced frame sections (21), one frame section (21) is provided with a telescopic rod (22) at its end, and the other frame section (21) is correspondingly provided with a slot (23) that cooperates with the telescopic rod (22), so that the stability frame (2) turned to the horizontal state can abut against the car wall. It further includes a second fixing component (4) for fixing the frame section (21) after telescopic adjustment.

2. The climbing ladder for maintenance inside an elevator car according to claim 1, characterized in that, The first fixing component (3) includes a binding rope, or a fastening bolt, or a fastening screw.

3. A climbing ladder for maintenance inside an elevator car according to claim 1, characterized in that, The second fixing component (4) includes a threaded rod (41) and a fastening nut (42). The threaded rod (41) is arranged on the frame section (21) containing the slot (23) and is connected to the telescopic rod (22). An installation groove (24) for the threaded rod (41) to move is provided on the corresponding frame section (21). The fastening nut (42) is used to cooperate with the threaded rod (41) to lock the telescopic rod (22) in the slot (23).

4. A climbing ladder for maintenance inside an elevator car according to claim 1, characterized in that, Hinge seat parts (11) are respectively arranged on both sides of the bottom of the ladder foot (1). A hinge shaft (12) located outside the ladder foot (1) is provided on the hinge seat part (11). The stability frame (2) is located outside the corresponding ladder foot (1) and is installed on the hinge shaft (12).

5. A climbing ladder for maintenance inside an elevator car according to claim 4, characterized in that, The stability frame (2) includes an arc support surface (25) that is in rolling contact with the outer side surface of the ladder foot (1). The arc support surface (25) is coaxially arranged with the hinge shaft (12).

6. A climbing ladder for maintenance inside an elevator car according to claim 5, characterized in that, A ground contact part (13) is arranged at the bottom of the ladder foot (1). The ground contact part (13) has a support plane (131) that is in rolling contact with the arc support surface (25).

7. A climbing ladder for maintenance inside an elevator car according to claim 6, characterized in that, The ground contact part (13) has a first contact plane (132) for contacting the ground.

8. A climbing ladder for maintenance inside an elevator car according to claim 5, characterized in that, The hinge seat part (11) includes a second contact plane (111) for contacting the car floor.

9. A climbing ladder for maintenance inside an elevator car according to claim 1, characterized in that, A number of support pads (26) are provided on the stability frame (2) that can contact the car floor when it is turned to the horizontal state.

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