Crawling ladder for going in and out of elevator pit

Abstract

The utility model discloses a ladder stand for going in and out of an elevator pit, and particularly relates to the technical field of elevator maintenance, the ladder stand comprises a first ladder stand and a second ladder stand which are arranged in the elevator pit, one side of the elevator pit is provided with a landing door, and a turnover fixing mechanism is arranged between the first ladder stand and the second ladder stand; the overturning fixing mechanism comprises a steel wire rope fixed to one side of the first ladder and one side of the second ladder, and an angular part is arranged at the top end of the steel wire rope. The turnover fixing mechanism is arranged, so that the ladder stand is prevented from occupying excessive space of an elevator pit when not used, when the ladder stand is used, the ladder stand can be quickly converted from a storage state to a use state, a channel is provided for entering and exiting the elevator pit in a short time, the working efficiency is improved, and through the fixing plate, the fixing bolt and the round wing butterfly nut, the ladder stand is convenient to use. When the ladder stand is used, the two ladder stands can be firmly fixed, and it is ensured that the ladder stands are not loosened or separated when bearing the weight of people.

Description

Technical Field

[0001] This utility model relates to the field of elevator maintenance technology, and more specifically, to a ladder for entering and exiting an elevator pit. Background Technology

[0002] With the increasing number of high-rise buildings, elevators are being used more and more widely. During the installation, maintenance and repair of elevators, workers often need to enter the elevator pit to work, and usually they will use a ladder to go down into the elevator pit.

[0003] In traditional elevator pit designs, ladders are usually fixed structures that occupy a large space. This not only affects other maintenance and management work in the elevator pit, but may also cause obstruction in the limited space. At the same time, traditional ladders are difficult to quickly switch from storage to use, which not only wastes the time of staff, but may also affect the efficiency of elevator maintenance and repair. Some ladders do not have effective limit devices and are prone to swaying when people climb them; the fixing method is unreliable and may loosen or fall off when bearing weight. Utility Model Content

[0004] In order to overcome the problems and defects in the prior art, the present invention provides a ladder for entering and exiting elevator pits, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a ladder for entering and exiting an elevator pit, comprising a first ladder and a second ladder installed inside the elevator pit, wherein a landing door is provided on one side of the elevator pit, and a flipping and fixing mechanism is provided between the first ladder and the second ladder.

[0006] The flipping and fixing mechanism includes a steel wire rope, which is fixed to one side of the first and second ladders. An angled piece is provided at the top of the steel wire rope. A ladder limiting frame is installed at the bottom of the inner wall of the elevator pit. A supporting profile is provided between the first ladder and the landing door. Expansion bolts are installed between the angled piece, the ladder limiting frame, and the supporting profile and the elevator pit. A fixing plate is provided between the first and second ladders. Threaded holes are provided on the top surfaces of the fixing plate, the first ladder, and the second ladder. A connecting hinge is fixedly installed between the first ladder and the second ladder.

[0007] Preferably, a fixing bolt is threaded inside the threaded hole, and a round wing nut is provided on the top of the fixing bolt, and the round wing nut is threadedly connected to the fixing bolt.

[0008] Preferably, the number of fixing bolts and wing nuts is set to multiple, and the number of fixing plates and hinges is set to two.

[0009] Preferably, the distance between the edge of the doorway and the corner piece is no more than 800mm, and the height of the corner piece from the ground is about 500mm.

[0010] Preferably, the ladder limiting frame is 400mm-550mm away from the edge of the pit.

[0011] Preferably, the expansion bolt is M8.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] 1. By incorporating a flip-and-fix mechanism, the first and second ladders can be folded up and secured with steel wire ropes in the storage state. This design significantly saves space, preventing the ladders from occupying excessive space in the elevator pit when not in use. It also facilitates other maintenance and management work in the elevator pit. When the ladders are needed, they can be quickly converted from the storage state to the use state. Releasing the steel wire rope, pulling out the ladder, flipping the second ladder, and fixing the fixing plate are simple and quick operations, providing access to and from the elevator pit in a short time and improving work efficiency. The fixing plate, fixing bolts, and wing nuts between the first and second ladders securely fix the two ladders in the use state, ensuring that the ladders will not loosen or separate when bearing the weight of personnel.

[0014] 2. By setting a ladder limit bracket and fixing it at a position 400mm-550mm from the edge of the pit, the ladder can be effectively prevented from tipping over during use, providing stable support for users and greatly reducing the safety risks caused by ladder instability. The angle bracket is fixed to the elevator pit with M8 expansion bolts. This fixing method is firm and reliable and can withstand a certain amount of tension and weight, ensuring that the ladder will not unfold accidentally when stored. At the same time, it can also provide a stable fixing point for the wire rope when in use. The support profile is also installed on one side of the elevator pit with expansion bolts, providing strong support for the second ladder and further enhancing the overall stability of the ladder. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the storage state structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the structure of this utility model in use.

[0017] Figure 3 This is a schematic diagram of the first and second ladders of this utility model in their folded state.

[0018] Figure 4 This is a top view of the first and second ladders of this utility model.

[0019] Figure 5 This is a schematic diagram of the connection between the first and second ladders of this utility model.

[0020] Figure 6 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0021] The attached diagram is labeled as follows: 1. First ladder; 2. Second ladder; 3. Elevator pit; 4. Landing doorway; 5. Steel wire rope; 6. Angle component; 7. Ladder limit bracket; 8. Support profile; 9. Expansion bolt; 10. Fixing plate; 11. Connecting hinge; 12. Threaded hole; 13. Fixing bolt; 14. Round wing nut. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] As attached Figure 1-6 The ladder shown is used for entering and exiting an elevator pit, including a first ladder 1 and a second ladder 2 installed inside the elevator pit 3. A landing door 4 is opened on one side of the elevator pit 3, and a flipping and fixing mechanism is provided between the first ladder 1 and the second ladder 2.

[0024] The flipping and fixing mechanism includes a steel wire rope 5, which is fixed to one side of the first ladder 1 and the second ladder 2. An angled piece 6 is provided at the top of the steel wire rope 5. A ladder limit frame 7 is installed at the bottom of the inner wall of the elevator pit 3. A supporting profile 8 is provided between the first ladder 1 and the landing door 4. An expansion bolt 9 is installed between the angled piece 6, the ladder limit frame 7, and the supporting profile 8 and the elevator pit 3. A fixing plate 10 is provided between the first ladder 1 and the second ladder 2. Threaded holes 12 are opened on the top surfaces of the fixing plate 10, the first ladder 1, and the second ladder 2. A connecting hinge 11 is fixedly installed between the first ladder 1 and the second ladder 2.

[0025] As attached Figure 1-5 As shown, a fixing bolt 13 is threadedly connected inside the threaded hole 12. A round wing nut 14 is provided on the top of the fixing bolt 13. The round wing nut 14 is threadedly connected to the fixing bolt 13. The number of fixing bolts 13 and round wing nuts 14 is set to multiple. The number of fixing plates 10 and hinges 11 is set to two. This facilitates the fixed connection between the first ladder 1 and the second ladder 2, improves the fixing effect of the first ladder 1 and the second ladder 2, and prevents the first ladder 1 and the second ladder 2 from folding during use, which would affect the safety of the user.

[0026] As attached Figure 1-5 As shown, the distance between the edge of the floor door 4 and the corner piece 6 is no more than 800mm, the height of the corner piece 6 from the ground is about 500mm, the ladder limit frame 7 is 400mm-550mm from the edge of the pit, and the expansion bolt 9 is M8 to prevent the first ladder 1 and the second ladder 2 from flipping over, and to further improve the fixing effect of the first ladder 1 and the second ladder 2.

[0027] The working principle of this utility model is as follows: This utility model provides a ladder for entering and exiting an elevator pit. In the storage state, the first ladder 1 and the second ladder 2 are folded up. At this time, one end of the steel wire rope 5 is knotted and fixed to the pedals of the first ladder 1 and the second ladder 2, and the other end of the steel wire rope 5 is knotted and fixed to the angle piece 6. The angle piece 6 is fixed to a suitable position in the elevator pit 3 by M8 expansion bolts 9.

[0028] When using the ladders to enter the elevator pit, first disconnect the steel cable 5 from one side of the elevator pit 3, then pull out the first ladder 1 and the second ladder 2. Remove the fixing plate 10 and fixing bolts 13 fixed to the first ladder 1 and the second ladder 2. Turn the second ladder 2 over so that it is in use. Then screw the fixing bolts 13 into the threaded holes 12 on the surface of the fixing plate 10, the first ladder 1 and the second ladder 2 to fix the fixing plate 10 from top to bottom. Tighten the wing nut 14 to complete the turning and fixing of the first ladder 1 and the second ladder 2, and at the same time make the support... The profile 8 is installed on one side of the elevator pit 3 by expansion bolts 9, so that the supporting profile 8 supports the second ladder 2. Then, the first ladder 1 and the second ladder 2 are inserted into the pit. At this time, the two columns of the first ladder 1 and the second ladder 2 are completely against the ladder limit frame 7 which is fixed in the pit in advance. The ladder limit frame 7 is fixed with M8 expansion bolts 9 and is 400mm-550mm away from the edge of the pit to prevent the ladder from overturning. This realizes the conversion between the storage state and the use state of the ladder, and provides a safe and convenient passage for entering and exiting the elevator pit.

[0029] In conclusion, the above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A ladder for entering and exiting an elevator pit, comprising a first ladder (1) and a second ladder (2) installed inside the elevator pit (3), characterized in that: A flipping and fixing mechanism is provided between the first ladder (1) and the second ladder (2), and a floor door (4) is opened on one side of the elevator pit (3); The flipping and fixing mechanism includes a steel wire rope (5), which is fixed on one side of the first ladder (1) and the second ladder (2). An angled piece (6) is provided at the top of the steel wire rope (5). A ladder limiting frame (7) is installed at the bottom of the inner wall of the elevator pit (3). A supporting profile (8) is provided between the first ladder (1) and the landing door (4). An expansion bolt (9) is installed between the angled piece (6), the ladder limiting frame (7), and the supporting profile (8) and the elevator pit (3). A fixing plate (10) is provided between the first ladder (1) and the second ladder (2). Threaded holes (12) are provided on the top surfaces of the fixing plate (10), the first ladder (1), and the second ladder (2). A connecting hinge (11) is fixedly installed between the first ladder (1) and the second ladder (2).

2. The ladder for entering and exiting an elevator pit according to claim 1, characterized in that: The threaded hole (12) is internally threaded with a fixing bolt (13), and a round wing nut (14) is provided on the top of the fixing bolt (13). The round wing nut (14) is threadedly connected to the fixing bolt (13), and the number of fixing bolts (13) and round wing nuts (14) is set to multiple.

3. The ladder for entering and exiting an elevator pit according to claim 1, characterized in that: The number of the fixing plate (10) and the hinge (11) is set to two.

4. The ladder for entering and exiting an elevator pit according to claim 1, characterized in that: The distance between the edge of the doorway (4) and the corner piece (6) is no more than 800mm, and the height of the corner piece (6) from the ground is about 500mm.

5. The ladder for entering and exiting an elevator pit according to claim 1, characterized in that: The ladder limit frame (7) is 400mm-550mm from the edge of the pit.

6. The ladder for entering and exiting an elevator pit according to claim 1, characterized in that: The expansion bolt (9) is of specification M8.

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