Safety device for elevator maintenance

Abstract

A kind of safety protection device for elevator maintenance, include two guardrail plate assemblies, guardrail plate assembly include wall connecting frame, guardrail plate, wall connecting frame is equipped with electromagnetic adsorption device and positioning table, electromagnetic adsorption device include coil circuit one with coil one;Further include the on-off circuit for connecting two coil circuit one to form coil total circuit, coil total circuit is connected to the maintenance circuit containing maintenance switch;The inner portion of two guardrails is respectively provided with movable lock bar and coil circuit two with coil two, movable lock bar is slidably arranged in corresponding guardrail, coil two is fixedly arranged in corresponding guardrail, coil circuit two is connected to the coil total circuit;Wherein, the corresponding guardrail of coil two is fixedly provided with toggle switch, the wall connecting frame of coil two is also provided with lever portion.The present application is suitable for installation in maintenance base, give consideration to high safety and convenience, simultaneously, protection will not bring greater inconvenience for the travel of householder.

Description

Technical Field

[0001] This invention relates to the field of elevators, and more particularly to a safety protection device for elevator maintenance. Background Technology

[0002] As elevators play an increasingly important role in people's lives, and we have gradually become inseparable from their use to some extent, elevator safety has become an increasingly important concern. Therefore, strengthening the daily inspection, maintenance, and upkeep of elevators is of paramount importance.

[0003] Elevators are typically equipped with a maintenance base. When an elevator is under maintenance, it stops at the maintenance base, and maintenance personnel open the hall door corresponding to the maintenance base, enter the car or car top from the maintenance base, and then operate the up or down remote control to move the elevator to different floors. After the maintenance is completed, the elevator returns to the maintenance base, and the maintenance personnel leave the car or car top.

[0004] During maintenance, special operations may be required, and the elevator may be in an unsafe state. In this case, in order to prevent passengers from accidentally entering the elevator, guardrails need to be installed outside the elevator doors on each floor to warn or prevent passengers from entering, causing accidents or affecting the maintenance work. However, at present, most of them use simple fences or guardrails for protection. These protective devices are basically movable and are often accidentally taken away or easily knocked over, which will pose certain safety risks to passengers or maintenance personnel.

[0005] Therefore, in the industry, some fences or guardrails fixed to walls have emerged. For example, the protective plate in CN109264527A is fixed to the wall by structural locking components. It has strong protective strength and warning function, which greatly improves the safety during maintenance. However, it is not conducive to maintenance personnel entering and exiting the car top. Each time they enter and exit the car top, they not only need to manually lock or unlock, but also lock or unlock within the limited area enclosed by the protective plate, which brings great inconvenience to maintenance personnel, especially when they are carrying a lot of maintenance equipment. If the area enclosed by the protective plate is increased, it will cause inconvenience to residents. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a safety protection device for elevator maintenance, suitable for installation on the maintenance floor, balancing high safety and convenience, while ensuring that the protection does not cause significant inconvenience to residents.

[0007] A safety protection device for elevator maintenance includes two guardrail assemblies. Each guardrail assembly includes a wall connecting frame and a guardrail. The guardrail is rotatably mounted on the wall connecting frame. The wall connecting frame is provided with an electromagnetic adsorption device for rotating the guardrail and a positioning platform for limiting the rotation angle of the guardrail. The electromagnetic adsorption device includes a coil circuit with a coil. It also includes a conducting circuit embedded in the wall corresponding to the maintenance base layer, which is used to connect the two coil circuits in series to form a total coil circuit, and the total coil circuit is connected in series to the maintenance circuit containing the maintenance switch. The interior of each guardrail is provided with a movable locking rod and a coil circuit with a coil. The movable locking rod is slidably disposed in the corresponding guardrail and a return spring connected to the movable locking rod is disposed in the corresponding guardrail. The coil is fixedly disposed in the corresponding guardrail and the coil circuit is connected in parallel to the main coil circuit. The guardrail plate corresponding to coil two is fixedly equipped with a toggle switch located in coil circuit two. When the toggle switch is toggled, coil two is energized and the movable locking rod is attracted to the guardrail plate corresponding to coil two. The wall connecting frame corresponding to coil two is also equipped with a lever part that toggles the toggle switch when the guardrail plate is rotated to the limit position.

[0008] Preferably, the coil is fixedly disposed inside the positioning stage.

[0009] Preferably, the positioning platform is provided with a mounting groove for mounting the coil, and the mounting groove is fixedly provided with a coil mounting part.

[0010] Preferably, the lever portion is fixedly connected to the end of the coil mounting portion.

[0011] Preferably, the conducting circuit is provided with a female connector for connection to the coil circuit, and the coil circuit is provided with a male connector for connection to the female connector.

[0012] Preferably, the second coil circuit is connected in parallel to the main coil circuit via a connection circuit pre-embedded in the wall; the connection circuit and the second coil circuit are connected via an aviation connector.

[0013] Preferably, the guardrail panel and the wall connecting frame are detachably connected.

[0014] In summary, the present invention has the following beneficial effects: This invention is suitable for installation on the base layer of maintenance facilities, taking into account both high protection and safety and convenience, and will not cause significant inconvenience to residents' travel during protection. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the installation of the safety protection device; Figure 2 for Figure 1 An installation diagram of one of the guardrail components; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 for Figure 1 Installation diagram of another guardrail component; Figure 5 This is a connection diagram of coil circuit one and coil circuit two. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0017] Example 1: As Figure 1-5 As shown, a safety protection device for elevator maintenance is suitable for installation on the maintenance base. It includes two guardrail assembly 1s, each containing a wall connecting frame 11 and a guardrail 12. The wall connecting frame 11 can be connected to the wall via fasteners. The guardrail 12 is vertically and rotatably mounted on the wall connecting frame 11. The wall connecting frame 11 is equipped with an electromagnetic adsorption device 13 for rotating the guardrail 12 and a positioning platform 14 for limiting the rotation angle of the guardrail 12. The electromagnetic adsorption device 13 specifically includes a coil circuit with a coil 131 and a coil mounting part 132 for fixing the coil 131. The safety protection device also includes a conducting circuit 1-0 embedded in the wall corresponding to the maintenance base for connecting the two coil circuits 1 in the two guardrail assembly 1s in series to form a coil total circuit. The coil total circuit is connected in series to a maintenance circuit containing a maintenance switch 01. The maintenance circuit is an essential circuit for elevator maintenance and is used during elevator maintenance. This is existing technology. When the maintenance switch 01 in the maintenance circuit is closed, the maintenance circuit is energized, and both coil circuits are energized. The magnetic field generated by coil 131 causes the guardrail 12 to rotate and rotate until it contacts the positioning platform 14.

[0018] The two guardrail panels 12 are respectively equipped with movable locking rods 15 and coil circuits 16. The movable locking rods 15 are slidably disposed in the corresponding guardrail panels 12, and the corresponding guardrail panels 12 are provided with return springs 17 connected to the movable locking rods 15. The coil circuits 16 are connected in parallel to the main coil circuit. The coil circuits 16 are fixedly disposed in the corresponding guardrail panels 12. A toggle switch 18 located in the coil circuits 16 is fixedly disposed in the guardrail panel 12 corresponding to the coil circuits 16. The guardrail panels 12 are specifically provided with switch mounting slots 121 for mounting the toggle switches 18. The coil circuits 16 are engaged when the toggle switches 18 are activated. When activated, the movable locking rod 15 is attracted to the guardrail plate 12 corresponding to the coil 16. The wall connecting frame 11 corresponding to the coil 16 is also provided with a lever 19. When the guardrail plate 12 rotates to contact the positioning platform 14, that is, when the guardrail plate 12 rotates to its limit position, the lever 19 extends into the switch mounting slot 121 and presses against the toggle switch 18, causing the toggle switch 18 to be activated. The coil circuit 2 is connected, and the coil 16 generates a magnetic field, which attracts the movable locking rod 15 to the guardrail plate 12 corresponding to the coil 16, so that the two guardrail plates 12 automatically lock each other, and the guardrail plays a protective role to ensure safety performance.

[0019] This safety protection device has the following advantages: 1. When maintenance personnel enter the car top from the maintenance base, they only need to close the maintenance switch at the car top to automatically lock the two guardrails 12 together, eliminating the need for manual locking as in existing technologies. This allows maintenance personnel to easily enter the car top. When maintenance personnel leave the car top, they turn off the maintenance switch on the car top, de-energizing both coil circuit one and coil circuit two. When coil circuit one is de-energized, it no longer generates magnetic force to hold the guardrail 12. When coil circuit two is de-energized, the movable locking rod 15 retracts under the action of the return spring 17. At this time, simply pushing the guardrail 12 outward allows maintenance personnel to leave easily.

[0020] 2: When maintenance personnel enter the car top, they can enter with the guardrail 12 open outwards. At this time, there is a larger space and area between the guardrail 12 and the hall door opening for maintenance personnel to carry equipment in, making entry more convenient.

[0021] 3: Because it is possible to enter when the guardrail 12 is opened outward, the guardrail 12 can be locked together to enclose the hall door in a smaller area, thus avoiding inconvenience to residents.

[0022] 4: The coil circuit 2 will only be energized and generate a magnetic field after the guardrail plate 12 is rotated to the limit position. This method of generating magnetic fields sequentially ensures that the two guardrail plates 12 can reliably lock each other, thus ensuring safety.

[0023] In this embodiment, coil 131 is fixedly disposed inside the positioning platform 14, effectively protecting coil 131 and making it less susceptible to damage. To this end, the positioning platform 14 is provided with a mounting groove 141 for mounting coil 131, and the coil mounting portion 132 is fixedly disposed in the mounting groove 141. The lever portion 19 is fixedly connected to the end of the coil mounting portion 132.

[0024] The conducting circuit 1-0 is provided with a female connector 31 for connecting to the coil circuit 1, and the coil circuit 1 is provided with a male connector 32 for connecting to the female connector 31. Through the cooperation of the male connector 32 and the female connector 31, the connection between the coil circuit 1 and the conducting circuit 1-0 can be realized simply and quickly.

[0025] The second coil circuit is connected in parallel to the main coil circuit through a connection circuit 1-1 pre-embedded in the wall. The connection circuit and the second coil circuit are connected through a connector, thus achieving a simple and quick connection between the second coil circuit and the main coil circuit.

[0026] In this guardrail assembly 1, only the two guardrail assemblies 1 can be reused in the maintenance of different elevators. When maintenance personnel use the guardrail assembly 1, they will go through the process of loading and transporting it. Therefore, the guardrail 12 and the wall connecting frame 11 are detachably connected. The guardrail 12 can be removed from the wall connecting frame 11, which facilitates the handling and transportation of the guardrail assembly 1.

[0027] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. All technical contents for which protection is sought in this invention have been fully described in the claims.

Claims

1. A safety protection device for elevator maintenance, characterized in that, It includes two guardrail assembly (1), the guardrail assembly (1) includes a wall connecting frame (11) and a guardrail (12), the guardrail (12) is rotatably mounted on the wall connecting frame (11), the wall connecting frame (11) is provided with an electromagnetic adsorption device (13) for rotating the guardrail (12) and a positioning platform (14) for limiting the rotation angle of the guardrail (12), the electromagnetic adsorption device (13) includes a coil circuit with a coil (131); It also includes a conducting circuit (1-0) embedded in the wall corresponding to the maintenance base layer for connecting the two coil circuits in series to form a total coil circuit, and the total coil circuit is connected in series to the maintenance circuit containing the maintenance switch (01); The interior of each of the two guardrails (12) is provided with a movable locking rod (15) and a coil circuit with a coil (16). The movable locking rod (15) is slidably disposed in the corresponding guardrail (12) and the corresponding guardrail (12) is provided with a reset spring (17) connected to the movable locking rod (15). The coil (16) is fixedly disposed in the corresponding guardrail (12) and the coil circuit is connected in parallel to the main coil circuit. Among them, the guardrail plate (12) corresponding to coil two (16) is fixedly provided with a toggle switch (18) located in coil circuit two. When the toggle switch (18) is toggled, coil two (16) is energized and the movable locking rod (15) is attracted into the guardrail plate (12) corresponding to coil two (16). The wall connecting frame (11) corresponding to coil two (16) is also provided with a lever part (19) that toggles the toggle switch (18) when the guardrail plate (12) is rotated to the limit position.

2. A safety protection device for elevator maintenance according to claim 1, characterized in that, The coil (131) is fixedly disposed inside the positioning stage (14).

3. A safety protection device for elevator maintenance according to claim 2, characterized in that, The positioning platform (14) is provided with a mounting groove (141) for mounting the coil (131), and a coil mounting part (132) is fixedly provided in the mounting groove (141).

4. A safety protection device for elevator maintenance according to claim 3, characterized in that, The lever part (19) is fixedly connected to the end of the coil mounting part (132).

5. A safety protection device for elevator maintenance according to claim 1, characterized in that, The conducting circuit (1-0) is provided with a female connector (31) for connection with the coil circuit, and the coil circuit is provided with a male connector (32) for connection with the female connector (31).

6. A safety protection device for elevator maintenance according to claim 5, wherein the second coil circuit is connected in parallel to the main coil circuit via a connection circuit (1-1) pre-embedded in the wall; the connection circuit and the second coil circuit are connected via a connector.

7. A safety protection device for elevator maintenance according to claim 1, characterized in that, The guardrail (12) and the wall connecting frame (11) are detachably connected.

Images