Home elevator counterweight fall arrestor safety clamp device

Abstract

This utility model discloses a counterweight anti-fall safety clamp device for a home elevator, relating to the technical field of elevator safety clamps. This utility model aims to solve the problem that installing a counterweight speed limiter occupies a large amount of elevator shaft space, reducing the utilization rate of the shaft space. This utility model includes a counterweight mechanism, with a rope head seat plate connected to the bottom end of the counterweight rope. The rope head seat plate is located below the counterweight beam of the counterweight mechanism. One end of the spring of the counterweight rope abuts against the counterweight beam, and the other end abuts against the rope head seat plate. Safety clamp bodies are installed on both sides of the counterweight frame of the counterweight mechanism, and the pull rod of the safety clamp body is connected to the rope head seat plate via a brake cable.

Description

Technical Field

[0001] This utility model relates to the technical field of elevator safety clamps, specifically to a counterweight anti-fall safety clamp device for a home elevator. Background Technology

[0002] The elevator speed governor is one of the most core and critical safety devices in the elevator safety protection system. Its main functions are overspeed monitoring and emergency braking. The counterweight speed governor, on the other hand, is a safety protection device specifically designed for the counterweight side of the elevator. Its core function is similar to that of the car speed governor, but the triggering conditions for protecting it differ.

[0003] The counterweight speed governor needs to be installed on the elevator's counterweight mechanism. When the counterweight mechanism falls, the counterweight speed governor can be used to trigger the safety clamp, which clamps the guide rail to prevent the counterweight mechanism from falling and damaging the building at the bottom of the elevator shaft (such as a basement or underground garage).

[0004] However, installing counterweight speed governors and their associated speed governor wire ropes will occupy a large amount of elevator shaft space, greatly reducing the space utilization rate of the elevator shaft. Utility Model Content

[0005] To address the aforementioned problem—that installing a counterweight speed limiter occupies significant elevator shaft space and reduces shaft space utilization—this invention proposes a counterweight anti-fall safety clamp device for home elevators. The device includes a counterweight mechanism, with a rope head seat plate connected to the bottom end of the counterweight rope. The rope head seat plate is positioned below the counterweight beam of the counterweight mechanism. One end of the spring of the counterweight rope abuts against the counterweight beam, and the other end abuts against the rope head seat plate. Safety clamp bodies are installed on both sides of the counterweight frame of the counterweight mechanism, and the pull rod of the safety clamp body is connected to the rope head seat plate via a brake cable.

[0006] A further feature of this invention is that a guide ring is connected to the counterweight frame, and the gate wire passes through the guide ring.

[0007] The beneficial effects of this utility model are as follows:

[0008] When the counterweight mechanism detaches from the car and falls, the force exerted by the car and counterweight mechanism on the rope end spring disappears, causing the spring to rebound. The rope end seat plate moves away from the counterweight beam, and the brake line pulls upward to tighten the pull rod of the safety clamp body, causing the rollers to clamp the guide rail and brake the counterweight mechanism, effectively preventing the counterweight from falling. The braking effect is achieved through the cooperation of the rope end seat plate and the brake line, eliminating the need to install a counterweight speed governor and speed governor wire rope, further saving elevator shaft space and improving elevator shaft utilization. Attached Figure Description

[0009] Figure 1 A schematic diagram of the structure of this utility model is shown.

[0010] Figure 2 A schematic diagram of the safety clamp body is shown.

[0011] Reference numerals in the attached drawings: 1. Counterweight mechanism; 11. Counterweight frame; 12. Counterweight block; 13. Counterweight rope end; 131. Spring; 14. Counterweight guide shoe; 15. Rope end seat plate; 2. Safety clamp body; 21. Pull rod; 211. Roller; 22. Clamp body; 23. Slide groove; 24. Rolling chamber; 3. Brake line. Detailed Implementation

[0012] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0013] This utility model proposes a counterweight anti-fall safety clamp device for a home elevator, including a counterweight mechanism 1. The counterweight mechanism 1 includes a U-shaped counterweight frame 11. Several counterweight blocks 12 are installed inside the counterweight frame 11. The counterweight frames 11 are connected to a counterweight beam by bolts. Two counterweight rope ends 13 are installed on the counterweight beam. The counterweight rope ends 13 are connected to the car by steel wire ropes. Two counterweight guide shoes 14 are installed on the two outer surfaces of the counterweight frame 11 for sliding connection with the counterweight guide rail.

[0014] Safety clamp bodies 2 are also installed on both outer surfaces of the counterweight frame 11, and the safety clamp bodies 2 are located at the bottom of the counterweight frame 11. A rope head seat plate 15 is installed at the bottom of the counterweight rope head 13, and the rope head seat plate 15 is located below the counterweight beam. The bottom ends of both counterweight rope heads 13 pass through the rope head seat plate 15 and are fixed by bolts. The spring 131 of the counterweight rope head 13 is located between the rope head seat plate 15 and the counterweight beam, and the top end of the spring 131 abuts against the counterweight beam, while the other end of the spring 131 abuts against the rope head seat plate 15.

[0015] A brake line 3 is fixedly connected to the rope head plate 15. The other end of the brake line 3 passes through the counterweight beam and is fixedly connected to the pull rod 21 of the safety clamp. A guide ring is bolted to the top of the counterweight frame 11. The brake line 3 passes through the guide ring to guide the brake line 3 and prevent the brake line 3 from interfering with the counterweight guide rail.

[0016] It should be noted that the accompanying drawings in this application only illustrate the installation of one guide ring. In actual use, multiple guide rings can be installed on the counterweight frame 11 as needed to guide the brake line 3 and avoid interference between the brake line 3 and the counterweight guide rail.

[0017] The safety clamp body 2 includes a clamp body 22, on which a vertical sliding groove 23 is provided. The sliding groove 23 is aligned with the guide groove of the counterweight guide shoe 14 and is also slidably connected to the counterweight guide rail. A rolling cavity 24 is also provided inside the clamp body 22. The rolling cavity 24 is connected to the sliding groove 23. The surface of the rolling cavity 24 facing away from the sliding groove 23 is set as an inclined surface, that is, the distance between the top of the inclined surface and the sliding groove 23 is smaller than the distance between the bottom of the inclined surface and the sliding groove 23. Roller 211 is provided inside the rolling cavity 24. Roller 211 is in contact with the inclined surface and is rotatably connected to the bottom end of the pull rod 21. It should be noted that when the safety clamp body 2 is not triggered, roller 211 is located at the bottom of the rolling cavity 24. At this time, roller 211 will be completely located inside the rolling cavity 24. When the safety clamp body 2 is not triggered, roller 211 will be squeezed into the slide groove 23 under the action of the inclined surface, and then clamped with the counterweight guide rail in the slide groove 23.

[0018] When the elevator is operating normally, the weight of the counterweight mechanism 1 itself will exert a downward force on the spring 131 under the action of the counterweight beam, while the car will exert an upward force on the spring 131 under the action of the wire rope. As a result, under the action of the two forces, the spring 131 will be compressed, that is, the rope end plate 15 will move closer to the counterweight beam, and the distance between the two will decrease. At this time, the brake line 3 will be in a slack state, and the safety clamp body 2 will also be in an untriggered state.

[0019] When the wire rope between the counterweight mechanism 1 and the car breaks, the counterweight mechanism 1 falls under the action of gravity. At this time, the spring 131 will no longer be subjected to any external force and will rebound under its own elastic force, thereby driving the rope head seat plate 15 to move away from the counterweight beam. The distance between the two will increase. At this time, the brake line 3 will be tightened under the pull of the rope head seat plate 15. The tightened brake line 3 will pull the lever 21 of the safety clamp body 2, causing the safety clamp body 2 to be triggered. The roller 211 will be pulled upward along the inclined plane and then pressed against the counterweight slide rail, thereby achieving the purpose of braking the counterweight mechanism 1 and effectively preventing the counterweight mechanism 1 from falling.

[0020] In summary, when the counterweight mechanism 1 detaches from the car and falls, the force exerted by the car and counterweight mechanism 1 on the rope head spring 131 will disappear, causing the spring 131 to rebound. The rope head seat plate 15 will move away from the counterweight beam, and the brake line 3 will pull the pull rod 21 of the safety clamp body 2 upward, causing the roller 211 to clamp the guide rail and brake the counterweight mechanism 1, effectively preventing the counterweight from falling. The braking effect is achieved through the cooperation of the rope head seat plate 15 and the brake line 3, eliminating the need to install a counterweight speed limiter and speed limiter wire rope, further saving elevator shaft space and improving elevator shaft utilization.

[0021] Although the present invention has been described with reference to preferred embodiments, various modifications can be made to it and components can be replaced with equivalents without departing from the scope of the present invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0022] In the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0025] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A home elevator counterweight anti-falling safety gear device, characterized in that: The system includes a counterweight mechanism (1), with a rope head seat plate (15) connected to the bottom end of the counterweight rope head (13) of the counterweight mechanism (1). The rope head seat plate (15) is located below the counterweight beam of the counterweight mechanism (1). One end of the spring (131) of the counterweight rope head (13) abuts against the counterweight beam, and the other end abuts against the rope head seat plate (15). Safety clamp bodies (2) are installed on both sides of the counterweight frame (11) of the counterweight mechanism (1). The pull rod (21) of the safety clamp body (2) is connected to the rope head seat plate (15) through the brake line (3).

2. The hoistway safety device according to claim 1, wherein: A guide ring is also connected to the counterweight frame (11), and the gate line (3) passes through the guide ring.

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