Folding pit ladder stand for elevator shaft

Abstract

The utility model discloses a folding pit ladder stand for an elevator hoistway, which comprises a folding ladder stand body which comprises a fixed seat, a support frame and a ladder stand, the fixed seat is fixedly arranged on the side wall of the hoistway, one end of the support frame is rotatably arranged on the fixed seat, and the other opposite end of the support frame is rotatably arranged on the ladder stand; the releasing assembly comprises a control rope, a guide wheel and a locking seat, one end of the control rope is fixedly installed on the ladder stand, the other opposite end of the control rope is detachably installed on the locking seat, the locking seat is fixedly installed on the side wall of the shaft at the elevator landing door, the guide wheel is fixedly installed on the side wall of the shaft, and the control rope bypasses the guide wheel. Compared with the prior art, the foldable pit ladder stand solves the problem that an existing foldable pit ladder stand in an elevator shaft is inconvenient to use and release.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to a folding pit ladder for an elevator shaft. Background Art

[0002] Normally, a pit ladder is installed in the elevator shaft for getting in and out between the pit and the flat floor. Due to the relatively high usage frequency, the pit ladder is generally installed on the wall near the entrance of the shaft.

[0003] In the above-mentioned layout mode of the pit ladder, when the space between the shaft and the car is relatively narrow, the pit ladder is close to the shaft wall, resulting in inconvenient use of the pit ladder. Therefore, a folding pit ladder is required. As disclosed in Chinese Patent No. 202211201744.0, a foldable elevator pit ladder includes a ladder frame assembly, a plurality of folding structure assemblies arranged on both sides of the ladder frame assembly, and a safety switch assembly arranged on one of the folding structure assemblies; the ladder frame assembly includes handrails and a plurality of tread rollers; the folding structure assembly includes a connecting rod, a base, a first pin shaft and a second pin shaft. One end of the connecting rod is hinged to the outer side wall of the handrail through the first pin shaft, and the other end is hinged to the base through the second pin shaft; the safety switch assembly includes a UKS switch, the UKS switch is fixed on the outer side wall of the base, and an arc-shaped notch is provided at the edge of the second pin shaft where the connecting rod is hinged to the base, and the triggering end of the UKS switch is arranged in the arc-shaped notch.

[0004] When the elevator shaft is large and the distance between the elevator landing door and the shaft walls on both sides is relatively far, the existing foldable pit ladder is inconvenient to release, resulting in inconvenient use by operators and posing a safety risk. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a folding pit ladder for an elevator shaft to solve the problems of inconvenient use and release of the existing foldable pit ladder in the elevator shaft.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme: A folding pit ladder for an elevator shaft includes:

[0007] A folding ladder body, which includes a fixed seat, a support frame and a ladder. The fixed seat is fixedly installed on the side wall of the shaft. One end of the support frame is rotatably installed on the fixed seat, and the opposite end is rotatably installed on the ladder.

[0008] A release assembly, which includes a control rope, a guide wheel and a locking seat. One end of the control rope is fixedly installed on the ladder, and the opposite end is detachably installed on the locking seat. The locking seat is fixedly installed on the side wall of the shaft at the elevator landing door. The guide wheel is fixedly installed on the side wall of the shaft, and the control rope bypasses the guide wheel.

[0009] As a further description of the above technical solution:

[0010] Two locking seats are arranged on the side wall of the well.

[0011] As a further description of the above technical solution:

[0012] A connecting ring is arranged at the end of the control rope, and the connecting ring is sleeved on the locking seat.

[0013] As a further description of the above technical solution:

[0014] The support frame is hinged to the fixed base by heavy-duty hinges.

[0015] As a further description of the above technical solution:

[0016] A rocker switch is arranged on the fixing seat, and the ladder in the folded state contacts the rocker switch.

[0017] As a further description of the above technical solution:

[0018] The control rope is a steel wire rope.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0020] 1. In the utility model, under normal conditions, the folding ladder body is in a folded state. At this time, the support frame is rotated upward so that the ladder is attached to and positioned on the fixing seat, the ladder is close to the wall of the shaft, and the end of the control rope is fixed to the locking seat. When the pit ladder is in use, the control rope and the locking seat are loosened, the ladder falls under the action of gravity, the support frame rotates downward and the ladder is opened, and when the support frame rotates to a horizontal state and is parallel to the bottom surface of the shaft, the control rope is stopped from being loosened and re-fixed to ensure that the unfolded state of the pit ladder is stable. At this time, the operator can directly step from the floor door to the crossbar of the ladder.

[0021] 2. In the utility model, a rocker switch is provided on the fixed seat, and the ladder in the folded state contacts the rocker switch. When the pit ladder is not in use, the ladder is in the folded state and close to the wall of the shaft. At this time, the rocker switch is actuated, and the elevator in the shaft can operate normally. When the pit ladder is in use, the ladder automatically falls to the use position under the action of gravity, and the ladder is separated from the rocker switch, so that the rocker switch is disconnected from the safety circuit, ensuring that the elevator cannot operate and ensuring that the operator can safely go up and down the shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the attached drawings required for use in the embodiments. It should be understood that the following attached drawings only show certain embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant attached drawings can also be obtained based on these attached drawings.

[0023] Figure 1 It is an installation schematic diagram of a folding bottom pit ladder for an elevator shaft.

[0024] Figure 2 It is a structural schematic diagram of a folding bottom pit ladder for an elevator shaft.

[0025] Figure 3 It is a folding schematic diagram of the folding ladder body in a folding bottom pit ladder for an elevator shaft.

[0026] Figure 4 It is an unfolding schematic diagram of the folding ladder body in a folding bottom pit ladder for an elevator shaft.

[0027] Figure 5 It is Figure 4 a partial enlarged view of the A position in

[0028] Legend description:

[0029] 1. Folding ladder body; 11. Fixed seat; 112. Rocker switch; 12. Support frame; 121. Heavy-duty hinge; 13. Ladder; 2. Release component; 21. Control rope; 22. Guide wheel; 23. Locking seat; 9. Shaft. Specific implementation manners

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the attached drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope protected by the present utility model.

[0031] Embodiment 1

[0032] Please refer to Figures 1-5 , the present utility model provides a technical solution: a folding bottom pit ladder for an elevator shaft, including:

[0033] A folding ladder body 1, which includes a fixed seat 11, a support frame 12, and a ladder 13. The fixed seat 11 is fixedly installed on the side wall of the shaft 9, and one end of the support frame 12 is rotatably installed on the fixed seat 11, and the opposite end is rotatably installed on the ladder 13;

[0034] The release assembly 2 includes a control rope 21, a guide wheel 22 and a locking seat 23. One end of the control rope 21 is fixedly mounted on the ladder 13, and the other end is detachably mounted on the locking seat 23. The locking seat 23 is fixedly mounted on the side wall of the shaft 9 at the elevator door. The guide wheel 22 is fixedly mounted on the side wall of the shaft 9, and the control rope 21 passes around the guide wheel 22.

[0035] The number of locking seats 23 can be flexibly set according to the release effect of the folding ladder body 1. Specifically, two locking seats 23 are set on the side wall of the shaft 9. The locking seat 23 far away from the folding ladder body 1 is used to lock the position of the folding ladder body 1 in the folded state, and the locking seat 23 close to the folding ladder body 1 is used to lock the position of the folding ladder body 1 in the unfolded state, so as to facilitate the unfolding and folding of the folding ladder body 1.

[0036] A connecting ring is provided at the end of the control rope 21, and the connecting ring is sleeved on the locking seat 23, so as to facilitate the connection and separation of the end of the control rope 21 and the locking seat 23, thereby improving the convenience of use.

[0037] The support frame 12 is hinged to the fixing seat 11 through a heavy-duty hinge 121, so that the load-bearing performance of the pit ladder is better.

[0038] A rocker switch 112 is provided on the fixing seat 11, and the ladder 13 in the folded state contacts the rocker switch 112. When the pit ladder is not in use, the ladder 13 is in the folded state and close to the wall of the shaft. At this time, the rocker switch 112 is activated, and the elevator in the shaft can operate normally. When the pit ladder is in use, the ladder 13 automatically falls to the use position under the action of gravity, and the ladder 13 is separated from the rocker switch 112, so that the rocker switch 112 is disconnected from the safety circuit, ensuring that the elevator cannot operate and ensuring that the operator can safely go up and down the shaft.

[0039] The control rope 21 is a steel wire rope, which prevents the control rope 21 from breaking and improves safety.

[0040] Working principle: Under normal conditions, the folding ladder body 1 is in a folded state. At this time, the support frame 12 is rotated upward, so that the ladder 13 is attached to and positioned on the fixing seat 11, the ladder 13 is close to the wall of the shaft, and the end of the control rope 21 is fixed to the locking seat 23. When the pit ladder is in use, the control rope 21 and the locking seat 23 are loosened, the ladder 13 falls under the action of gravity, the support frame 12 rotates downward, and the ladder 13 is propped open. When the support frame 12 rotates to a horizontal state and is parallel to the bottom surface of the shaft 9, the control rope 21 is stopped from being loosened, and the control rope 21 is re-fixed to ensure that the unfolded state of the pit ladder is stable. At this time, the operator can directly step from the floor door to the crossbar of the ladder 13.

[0041] Example 2

[0042] Others are the same as those in Embodiment 1, except that: a rod body with a hook-shaped structure at the end is used to release the folding ladder body 1, and the hook-shaped structure is used to pull the support frame 12 or the ladder 13 of the folding ladder body 1, facilitating the release of the folding ladder body 1.

[0043] As mentioned above, it is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent replacements or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A foldable pit ladder for an elevator shaft, characterized in that: include: A folding ladder body, comprising a fixing seat, a support frame and a ladder, wherein the fixing seat is fixedly mounted on the side wall of the well, and one end of the support frame is rotatably mounted on the fixing seat, and the other end opposite thereto is rotatably mounted on the ladder; The release assembly includes a control rope, a guide wheel and a locking seat. One end of the control rope is fixedly mounted on the ladder, and the other end is detachably mounted on the locking seat. The locking seat is fixedly mounted on the side wall of the shaft at the elevator door. The guide wheel is fixedly mounted on the side wall of the shaft, and the control rope passes around the guide wheel.

2. A foldable pit ladder for an elevator shaft according to claim 1, characterized in that: Two locking seats are arranged on the side wall of the well.

3. A foldable pit ladder for an elevator shaft according to claim 1, characterized in that: The end of the control rope is provided with a connecting ring, and the connecting ring is sleeved on the locking seat.

4. A foldable pit ladder for an elevator shaft according to claim 1, characterized in that: The support frame is hinged on the fixing seat through a heavy hinge.

5. The foldable pit ladder for an elevator shaft according to claim 1, characterized in that: A rocker switch is arranged on the fixing seat, and the ladder in the folded state contacts the rocker switch.

6. A foldable pit ladder for an elevator shaft according to claim 1, characterized in that: The control rope is a steel wire rope.

Images