Car roof sliding guardrail for elevator

Abstract

The utility model discloses a car roof sliding guardrail for an elevator. A three-face guardrail is provided with an open end extending in the transverse direction. The in-out guardrail is arranged in the open end of the three-face guardrail and comprises a sliding groove, a sliding rod, a limiting switch and a locking assembly. The two sets of sliding grooves are oppositely arranged at intervals in the transverse direction and extend in the vertical direction, and an access channel is formed between the two sets of sliding grooves. The sliding rod stretches across the access channel; the sliding rod is connected with the sliding grooves in the two sides in an up-down sliding mode and has an intercepting position for stopping passing through the access channel and an access position for allowing passing through the access channel. The locking assembly is used for locking or unlocking the sliding rod at the intercepting position; at the intercepting position, the sliding rod is in contact with the limiting switch; at the in-out position, the sliding rod is far away from the limiting switch. Four-side protection can be achieved on the car roof of the elevator so that maintenance personnel can be effectively protected, the elevator can enter and exit from the car roof conveniently, the structural design is simple, installation is convenient and fast, and the actual use requirement of the elevator is effectively met.

Description

Technical Field

[0001] This utility model relates to the field of elevator technology, and in particular to a sliding guardrail for the top of an elevator car. Background Technology

[0002] Typically, a car top guardrail is installed on the top of the elevator car to protect maintenance personnel. This guardrail is usually designed with guardrails on three sides, with no guardrail on the side of the shaft wall with the door opening, to facilitate access for maintenance personnel. However, when the distance between the outer edge of the car top and the shaft wall on the landing door side exceeds 0.30 meters, it is usually necessary to install a safety net covering the entire shaft to prevent maintenance personnel from accidentally falling. However, this safety net is not only cumbersome and time-consuming to install, but also increases maintenance costs. Utility Model Content

[0003] To address the aforementioned technical problems, the purpose of this utility model is to propose a sliding guardrail for elevator car tops, which can provide four-sided protection for elevator car tops to effectively protect maintenance personnel. It also allows for easy access to and from the car tops, has a simple structural design, is easy to install, effectively meets the actual usage needs of elevators, and is highly practical.

[0004] The technical solution of this utility model is achieved as follows: an elevator car top sliding guardrail, including three guardrails and an entrance / exit guardrail;

[0005] The three-sided guardrail has an open end that extends laterally;

[0006] The access guardrail is installed inside the open end of the three-sided guardrail and includes a sliding groove, a sliding rod, a limit switch, and a locking component;

[0007] The two sets of chutes are arranged at relative intervals in the transverse direction and extend in the vertical direction, forming an inlet and outlet channel between them;

[0008] Several sets of sliding rods span the entrance / exit channel; each set of sliding rods is slidably connected to the sliding grooves on both sides, having an intercepting position that prevents passage through the entrance / exit channel and an entrance / exit position that allows passage through the entrance / exit channel;

[0009] The locking components are arranged corresponding to each set of sliding rods and are used to lock or unlock the sliding rods at the interception position.

[0010] The limit switch is arranged with at least one set of sliding rods; in the intercept position, the sliding rod is in contact with the limit switch; in the enter / exit position, the sliding rod is away from the limit switch.

[0011] Furthermore, the access guardrail includes crossbeams; several sets of crossbeams are arranged side by side between each set of slides and the three guardrails.

[0012] Furthermore, the first end of the crossbeam is welded and fixed to the slide groove, and the second end is welded with a connecting plate; the connecting plate is fastened to the three-sided guardrail by a bolt assembly.

[0013] Furthermore, sliding plates are welded to both ends of the sliding rod; the sliding plates are slidably disposed in the corresponding grooves.

[0014] Furthermore, the limit switch is fixed on the slide groove, and the trigger end extends into the slide groove; the upper and lower ends of the sliding plate are provided with bent portions that bend towards the direction of the inlet and outlet channel; at the interception position, the sliding plate is in contact with the limit switch.

[0015] Furthermore, the locking assembly includes a pin rod and a pin hole seat; the pin rod is movably mounted on a sliding rod; and the pin hole seat is mounted on a sliding groove.

[0016] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0017] 1. This utility model utilizes the combined use of three-sided guardrails and entry / exit guardrails. When the sliding rod is moved to the entry / exit position, the entry / exit passage is opened to facilitate entry and exit from the car top. When the sliding rod is moved to the blocking position, the entry / exit passage is blocked, forming four-sided protection on the car top. This combination of methods achieves four-sided protection on the elevator car top, effectively protecting maintenance personnel. It also facilitates entry and exit from the car top, features a simple structural design, and is easy to install, effectively meeting the actual usage needs of elevators and demonstrating strong practicality.

[0018] 2. This utility model, through the combined use of limit switches, allows the sliding rod to move to the entry / exit position when maintenance personnel need to enter or exit the car top. At this point, the limit switch is disengaged, outputting a signal to prevent elevator malfunction. After maintenance personnel have entered or exited the car top, they move the sliding rod to the blocking position, triggering the limit switch to control elevator operation. This method improves the safety of maintenance personnel entering and exiting the car top and is highly practical. Attached Figure Description

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0020] Figure 1 This is a top view structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the slide and crossbeam of this utility model;

[0022] Figure 3 for Figure 2 Enlarged view of point A in the image;

[0023] Figure 4 for Figure 2 A top view structural diagram;

[0024] Figure 5 for Figure 4 Enlarged view of point B in the image;

[0025] Figure 6 This is a schematic diagram of the internal structure of the groove of this utility model;

[0026] Figure 7 This is a schematic diagram of the sliding rod of this utility model;

[0027] Figure 8 This is a schematic diagram of the locking component of this utility model;

[0028] Figure 9 This is a schematic diagram of the structure of the pin hole seat of this utility model;

[0029] The components include: 1. Three-sided fence; 2. Slide groove; 3. Sliding rod; 31. Sliding plate; 32. Bending part; 4. Crossbeam; 41. Connecting plate; 5. Limit switch; 6. Pin rod; 61. Pin hole seat; 7. Stop block; 8. Buckle. Detailed Implementation

[0030] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0031] like Figure 1-9 The image shows a sliding guardrail for an elevator car top, as described in this embodiment. This sliding guardrail is installed on the top of the elevator car to provide interception and protection. The sliding guardrail includes three guardrails and an entrance / exit guardrail. The three guardrails and the entrance / exit guardrail form a rectangular frame structure. The three guardrails are fixed to the top of the car and are welded together from structural components. The three guardrails enclose a working area, with the three sides providing interception and protection. An open end extending laterally is formed between the two free ends of the three guardrails.

[0032] The aforementioned access railings are arranged within the open ends of the three-sided guardrails and include a chute 2, a crossbeam 4, a sliding rod 3, a limit switch 5, and a locking assembly. The chute 2 has a designed length and an internally formed C-shaped cavity. Two sets of chute 2 are arranged laterally at intervals and extend vertically, forming an access passage between them. This access passage allows entry and exit into the working area enclosed by the three-sided guardrails. The lower end of the chute 2 is fixed to the car top door operator mounting base via a support plate. Several sets of crossbeams 4 are arranged vertically side-by-side between each set of chute 2 and the three-sided guardrails to intercept the gap between the chute 2 and the three-sided guardrails 1. The first end of each crossbeam 4 is welded to the chute 2, and the second end is welded to a connecting plate 41. The connecting plate 41 is fastened to the three-sided guardrails via bolt assemblies. This structural design ensures that the chute 2 is stably and reliably fixed to the car top.

[0033] Several sets of sliding rods 3 span the access channel. Each set of sliding rods 3 is slidably connected at both ends to the sliding grooves 2 on both sides, and has an interception position that prevents passage through the access channel and an access position that allows passage. At the interception position, the sliding rods 3 are spaced apart vertically to block the access channel. At the access position, the sliding rods 3 move to the bottom of the sliding groove 2, allowing maintenance personnel to step over the sliding rods 3 and pass through the access channel. Specifically, sliding plates 31 are welded to both ends of the sliding rods 3. These sliding plates 31 are slidably arranged within the C-shaped cavities of the corresponding sliding grooves 2. The sliding of these sliding plates 31 allows the sliding rods 3 to move smoothly up and down.

[0034] A stop block 7 is installed at the bottom of the slide 2. This stop block 7 prevents the slide rod 3 from moving downward.

[0035] The aforementioned locking assembly is arranged corresponding to each set of sliding rods 3, used to lock or unlock the sliding rods 3 at the interception position. This locking assembly allows the sliding rods 3 to be limited to the interception position. Specifically, the locking assembly includes a pin 6 and a pin hole seat 61. Both the pin 6 and the pin hole seat 61 are conventional components of the prior art. The pin 6 is movably arranged on a fixed base in a linear direction. The pin 6 is fixedly mounted on the sliding rod 3 via the fixed base, allowing it to move relative to the sliding rod 3. The pin hole seat 61 is fixed to the slide groove 2, its position corresponding to the pin 6. By inserting the pin 6 into the insertion hole on the pin hole seat 61, the sliding rod 3 is restricted to the interception position. By removing the pin 6 from the pin hole seat 61, the locking of the sliding rod 3 is released.

[0036] The aforementioned limit switch 5 corresponds to at least one set of sliding rods 3. This limit switch 5 is a conventional component of the prior art, connected to the elevator's central control system. The limit switch 5 is fixed to the slide rail 2 and has a trigger end facing the entry / exit space. The trigger end of the limit switch 5 is movable in the direction of approaching or moving away from the entry / exit space to be triggered or reset. Its trigger end extends into the C-shaped cavity of the slide rail 2. When in the aforementioned blocking position, the sliding plate 31 on the sliding rod 3 contacts the limit switch 5 to trigger it. When in the aforementioned entry / exit position, the sliding rod 3 moves away from the limit switch 5 to deactivate the trigger and reset the limit switch 5.

[0037] A latch 8 is installed at a preset position on the slide 2. The latch 8 is a conventional component in the prior art. When the sliding rod 3 moves to the intercepting position, it moves to a position directly above the latch 8, which can easily align the pin 6 with the pin hole seat 61, ensuring the stability of the sliding rod 3. When the latch 8 is adjusted to a 90-degree position, the operator can place one side of the sliding rod 3 on the latch 8, which makes it easier to balance the sliding rod 3, reduces the difficulty of operation, and improves work efficiency.

[0038] In this embodiment, the upper and lower ends of the sliding plate 31 are formed with bent portions 32 that bend towards the direction of entering and exiting the channel. The bent portions 32 are arranged at an angle to serve as guides. When the sliding plate 31 slides up and down, the bent portions 32 at the upper and lower ends first contact the trigger end of the limit switch 5 and press the trigger end to retract, so that the sliding plate 31 can smoothly pass through the trigger end of the limit switch 5.

[0039] In practical use, when the sliding rods 3 are moved to the in / out position during elevator maintenance, the access passage is opened, allowing maintenance personnel to step over the sliding rods 3 and enter or leave the work area enclosed by the three maintenance railings. At this time, the limit switches 5 are disconnected to output signals and prevent elevator malfunction. When the sliding rods 3 are moved to the blocking position, the access passage is blocked by the sliding rods 3, forming four-sided protection on the car top. At this time, the limit switches 5 are triggered to control elevator operation. The combination of the above methods achieves four-sided protection on the elevator car top, effectively protecting maintenance personnel. It also facilitates entry and exit from the car top, improving the safety of maintenance personnel when entering and exiting the car top. The structural design is simple, installation is convenient, and it effectively meets the actual usage needs of elevators, demonstrating strong practicality.

[0040] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A sliding guardrail for the top of an elevator car, comprising three guardrails and an entrance / exit guardrail; characterized in that: The three-sided guardrail has an open end that extends laterally; The access guardrail is installed inside the open end of the three-sided guardrail and includes a sliding groove, a sliding rod, a limit switch, and a locking component; The two sets of chutes are arranged at relative intervals in the transverse direction and extend in the vertical direction, forming an inlet and outlet channel between them; Several sets of sliding rods span the entrance / exit channel; each set of sliding rods is slidably connected to the sliding grooves on both sides, having an intercepting position that prevents passage through the entrance / exit channel and an entrance / exit position that allows passage through the entrance / exit channel; The locking components are arranged corresponding to each set of sliding rods and are used to lock or unlock the sliding rods at the interception position. The limit switch is arranged with at least one set of sliding rods; in the intercept position, the sliding rod is in contact with the limit switch; in the enter / exit position, the sliding rod is away from the limit switch.

2. The elevator car top sliding guardrail according to claim 1, characterized in that: The access guardrail includes a crossbeam; several sets of the crossbeams are arranged side by side between each set of slides and the three guardrails.

3. The elevator car top sliding guardrail according to claim 2, characterized in that: The first end of the crossbeam is welded and fixed to the slide groove, and the second end is welded with a connecting plate; the connecting plate is fastened to the three-sided guardrail by a bolt assembly.

4. The elevator car top sliding guardrail according to claim 1, characterized in that: The sliding rod has sliding plates welded to both ends; the sliding plates are slidably disposed in the corresponding grooves.

5. A sliding guardrail for the top of an elevator car according to claim 4, characterized in that: The limit switch is fixed on the slide groove, and the trigger end extends into the slide groove; the upper and lower ends of the sliding plate are provided with bent portions that bend towards the direction of the inlet and outlet channel; at the interception position, the sliding plate is in contact with the limit switch.

6. The elevator car top sliding guardrail according to claim 1, characterized in that: The locking assembly includes a pin rod and a pin hole seat; the pin rod is movably mounted on a sliding rod; and the pin hole seat is mounted on a sliding groove.

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