A device for preventing a person from falling into a shaft

Abstract

The present application relates to a device for preventing people from falling into the shaft, comprising a landing door, a trigger device, a linkage device and a protection device, the trigger device is installed in the steel pipe on the inner side of the landing door, the linkage device comprises a steel wire rope and a rigid slide rail, and the protection device is a protective net assembly, the protective net assembly comprises a storage device, a protective net and a rigid support strip, the present application adds independent protection measures to the existing elevator shaft landing door, so that when the landing door is broken by external violence, the people will not fall into the shaft, the structure is simple and small, almost does not occupy the space of the shaft, and is triggered mechanically, and is not affected by power failure.

Description

Technical Field

[0001] This invention relates to the field of elevator shaft landing door safety protection devices, and in particular to a device for preventing people from falling into the shaft. Background Technology

[0002] Currently, elevator designs include measures to address reckless and violent behavior by people trapped inside the elevator car, such as controlling the distance between the shaft wall and the car and adding anti-pry door devices. However, there are currently no measures in place to address reckless and violent acts of breaking down the landing doors from the outside.

[0003] Common methods of forcibly breaking into landing doors include kicking the door down or having an electric vehicle crash into it. When landing doors are damaged, people are likely to fall into the shaft.

[0004] Therefore, it is necessary to install separate safety protection devices on the landing doors to protect personnel and prevent them from falling into the shaft in the event of damage caused by reckless breaching. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a device to prevent people from falling into the shaft.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a device to prevent personnel from falling into the shaft, including a landing door, a triggering device, a linkage device and a protection device, wherein the bottom of the landing door is slidably connected to the landing door sill through a door foot slider, and a foot guard is provided at the lower end of the landing door sill.

[0007] The triggering device includes a guide steel pipe welded to the landing door, and a counterweight is installed inside the guide steel pipe. The linkage device includes a wire rope, a fixed pulley block and a rigid guide rail installed on the shaft wall, and a one-way holding device is installed inside the rigid guide rail.

[0008] The protective device includes a storage device and a protective net. The protective net roll is placed inside the storage device. A rigid support bar is installed on the upper edge of the output end of the protective net. The two ends of the rigid support bar are slidably connected to the rigid guide rail and are limited by the downward movement of the one-way holding device.

[0009] One end of the steel wire rope is connected to the counterweight, and the other end passes through the rigid guide rail and is connected to the rigid support bar. The upper end of the counterweight is connected to the steel wire rope, and the lower end is confined in the door sill.

[0010] Furthermore, the guide steel pipe of the present invention has a semi-enclosed structure;

[0011] By adopting the above technical solution, when the landing door is misaligned and damaged by external reckless breaking-in, the heavy hammer will detach from the guide steel pipe and the landing door sill and fall downwards, and the protective net will be pulled up by the steel wire rope.

[0012] Furthermore, the middle section of the wire rope described in this invention is guided and tensioned by the fixed pulley group, which includes independent pulleys respectively installed on the landing door and the shaft wall.

[0013] By adopting the above technical solution, the installation position of the fixed pulley block can be adjusted according to the installation position of the guide steel pipe and rigid guide rail as well as the width of the landing door, which facilitates the guidance and tensioning of the wire rope.

[0014] Furthermore, the one-way holding device of the present invention comprises a plurality of one-way torsion spring metal sheets arranged vertically. When the lower end face of the one-way torsion spring metal sheet is subjected to an upward force, it rotates counterclockwise and opens a channel for the rigid support bar to move upward.

[0015] By adopting the above technical solution, after the rigid support bar moves upward with the protective net and knocks open the one-way torsion spring metal sheet, the one-way torsion spring metal sheet resets and jams the channel, which can prevent the rigid support bar from moving downward. When the protective net needs to be retrieved, it is only necessary to manually rotate the one-way torsion spring metal sheet to open the channel and then take out the protective net.

[0016] Furthermore, the storage device of the present invention is installed on the well wall below the foot plate, and the protective net is rolled up in the storage device by a spring mechanism, which is the same as the shrinking mechanism of a common "measuring tape".

[0017] The beneficial effects of this invention are that it overcomes the defects existing in the prior art and has the following advantages:

[0018] 1. This invention adds an independent protection measure to the existing elevator shaft landing doors, so that when the landing doors are forcibly broken by external force, personnel will not fall into the shaft, thus avoiding casualties;

[0019] 2. The entire device has a simple structure, is highly operable, occupies very little shaft space during installation, and does not affect the normal operation of the elevator;

[0020] 3. The entire device is mechanically triggered, so it can provide protection even in the event of a power outage. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure inside the rigid guide rail in this invention.

[0023] In the diagram: 1. Landing door, 2. Door foot slider, 3. Landing door sill, 4. Foot guard plate, 5. Guide steel pipe, 6. Counterweight, 7. Steel wire rope, 8. Fixed pulley block, 9. Rigid guide rail, 10. One-way retaining device, 11. Storage device, 12. Protective net, 13. Rigid support bar. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0025] like Figure 1 and Figure 2 The device shown includes a landing door 1, a triggering device, a linkage device, and a protection device. The bottom of the landing door 1 is slidably connected to the landing door sill 3 via a door foot slider 2. A foot guard 4 is provided at the lower end of the landing door sill 3.

[0026] The triggering device includes a guide steel pipe 5 welded to the landing door 1, and a counterweight 6 is installed inside the guide steel pipe 5. The linkage device includes a wire rope 7, a fixed pulley block 8 and a rigid guide rail 9 installed on the shaft wall, and a one-way holding device 10 is installed inside the rigid guide rail 9.

[0027] The protective device includes a storage device 11 and a protective net 12. The protective net 12 is rolled up in the storage device 11. A rigid support bar 13 is installed on the upper edge of the output end of the protective net 12. The two ends of the rigid support bar 13 are slidably connected in the rigid guide rail 9 and are subject to the downward limit of the one-way holding device 10.

[0028] One end of the wire rope 7 is connected to the counterweight 6, and the other end passes through the rigid guide rail 9 and is connected to the rigid support bar 13. The upper end of the counterweight 6 is connected to the wire rope 7, and the lower end is limited in the door sill 3.

[0029] The guide steel pipe 5 has a semi-enclosed structure; the middle section of the wire rope 7 is guided and tensioned by the fixed pulley group 8, which includes independent pulleys respectively installed on the landing door 1 and the shaft wall. The installation position of the fixed pulley group 8 can be adjusted according to the installation positions of the guide steel pipe 5 and the rigid guide rail 9, as well as the width of the landing door, to facilitate the guidance and tensioning of the wire rope.

[0030] The one-way retaining device 10 consists of two one-way torsion spring metal plates arranged vertically. When the lower end face of the one-way torsion spring metal plate is subjected to an upward force, it rotates counterclockwise and opens the channel for the rigid support bar 13 to move upward.

[0031] The storage device 11 is installed on the well wall below the foot plate 4. The protective net 12 is rolled up in the storage device 11 by a spring mechanism, which is the same as the shrinking mechanism of a common "measuring tape".

[0032] Working principle:

[0033] When the landing door 1 is damaged or misaligned due to external reckless breaking, the hammer 6 will detach from the guide steel pipe 5 and the landing door sill 3 and fall downwards, and will be pulled up by the steel wire rope 7 to the protective net 12.

[0034] At this time, the rigid support bar 13 moves upward with the protective net 12, knocks open the one-way torsion spring metal sheet and moves upward. The one-way torsion spring metal sheet resets and blocks the channel, which can prevent the rigid support bar 13 from moving downward. At this time, the protective net 12 pulled out can effectively prevent people from falling into the shaft.

[0035] When the protective net needs to be recycled, simply rotate the one-way torsion spring metal sheet manually to open the channel, then take out the protective net 12 and recycle it into the storage device 11.

[0036] The entire device is mechanically triggered and is not affected by power supply. Moreover, the installation structure is simple and compact, hardly occupies any shaft space, and does not affect the normal installation and operation of the elevator.

[0037] The above description is only a specific embodiment of the present invention. Various examples and illustrations do not constitute a limitation on the substantive content of the present invention. Those skilled in the art can make modifications or variations to the above-described specific embodiments after reading the specification without departing from the substance and scope of the invention.

Claims

1. A device for preventing personnel from falling into a shaft, characterized in that: It includes a landing door (1), a triggering device, a linkage device and a protection device. The bottom of the landing door (1) is slidably connected to the landing door sill (3) through a door foot slider (2). The lower end of the landing door sill (3) is provided with a foot guard (4). The triggering device includes a guide steel pipe (5) welded to the landing door (1), and a counterweight (6) is installed inside the guide steel pipe (5). The linkage device includes a wire rope (7), a fixed pulley block (8), and a rigid guide rail (9) installed on the shaft wall. A one-way holding device (10) is installed inside the rigid guide rail (9). The protective device includes a storage device (11) and a protective net (12). The protective net (12) is rolled up in the storage device (11). A rigid support bar (13) is installed on the upper edge of the output end of the protective net (12). The two ends of the rigid support bar (13) are slidably connected in the rigid guide rail (9) and are subject to the downward limit of the one-way holding device (10). One end of the steel wire rope (7) is connected to the weight (6), and the other end passes through the rigid guide rail (9) and is connected to the rigid support bar (13). The upper end of the weight (6) is connected to the steel wire rope (7), and the lower end is limited in the door sill (3).

2. The device for preventing personnel from falling into a shaft as described in claim 1, characterized in that: The guide steel pipe (5) is a semi-enclosed structure.

3. The device for preventing personnel from falling into a shaft as described in claim 1, characterized in that: The middle section of the wire rope (7) is guided and tensioned by the fixed pulley group (8), which includes independent pulleys respectively installed on the landing door (1) and the shaft wall.

4. The device for preventing personnel from falling into a shaft as described in claim 1, characterized in that: The one-way holding device (10) consists of several one-way torsion spring metal sheets arranged vertically. When the lower end face of the one-way torsion spring metal sheet is subjected to an upward force, it rotates counterclockwise and opens a channel for the rigid support bar (13) to move upward.

5. The device for preventing personnel from falling into a shaft as described in claim 1, characterized in that: The storage device (11) is installed on the well wall below the foot plate (4), and the protective net (12) is rolled up in the storage device (11) by a spring mechanism.

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