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CN-224212218-U - Pit safety hook for preventing elevator car from undershooting

CN224212218UCN 224212218 UCN224212218 UCN 224212218UCN-224212218-U

Abstract

The utility model belongs to the technical field of elevator safety protection, in particular to a pit safety hook for preventing an elevator car from undershooting, which comprises a bottom plate, a supporting plate, a limiting cylinder, a telescopic rod and the like, wherein a plurality of supporting plates are arranged on the bottom plate in a two-row and two-row distribution manner, the adjacent limiting cylinders are in a group, four groups are provided, each group of limiting cylinders are fixedly connected to each supporting plate, each telescopic rod is slidably arranged on each limiting cylinder, one end of each telescopic rod extends to the outside of each limiting cylinder, and the other end of each telescopic rod extends to the inside of each limiting cylinder. Through rationally setting up four buffer units of symmetric distribution at pit safety hook, unexpected undershoot when elevator car, four buffer units can provide the buffer force from elevator car bottom four corners simultaneously, and this kind of multiple spot dispersion buffering mode even if unbalance loading, slope appear when elevator car undershoot, also can evenly disperse, absorb impact energy, avoid elevator car local impaired, guarantee structural integrity and passenger safety.

Inventors

  • WU YOUWEN

Assignees

  • 江西众联机电科技有限公司

Dates

Publication Date
20260508
Application Date
20250620

Claims (6)

  1. 1. The utility model provides a prevent pit safety hook of elevator car undershoot, a serial communication port, including bottom plate (1), backup pad (2), spacing section of thick bamboo (3), telescopic link (4), couple (5), installation component and spring (13), a plurality of backup pads (2) are two rows and two are listed as the distribution and install on bottom plate (1), adjacent a plurality of spacing section of thick bamboo (3) are a set of, four altogether, every spacing section of thick bamboo (3) rigid coupling of group is on every backup pad (2), every telescopic link (4) slide and set up on every spacing section of thick bamboo (3), its one end extends to the outside of spacing section of thick bamboo (3), the other end then extends to the inside of spacing section of thick bamboo (3), and the maximum diameter of the other end is greater than the diameter of spacing section of thick bamboo (3) one end opening, every couple (5) rigid coupling is between the one end of every adjacent a plurality of telescopic link (4), every two spring (13) up-down distribution set up the inside of every spacing section of thick bamboo (3), and wherein a spring (13) cover is established at the other end of corresponding telescopic link (4), its one end is aligned with the perpendicular alignment of a plurality of telescopic link (3) and the fixed with the spacing section of thick bamboo (3) respectively, the two ends of the telescopic link (3) are aligned with each other end (3) and the vertical alignment of the telescopic link (3) and the two ends (3) are aligned with each other vertical link (3) and the vertical link (3 respectively, and the vertical link (3) and the two ends are aligned with each vertical link (3 and the vertical link (3) Every many telescopic links (4) and every two springs (13) constitute a buffer unit jointly, totally four, and the installation component sets up on a plurality of couples (5).
  2. 2. The pit safety hook for preventing undershoot of an elevator car according to claim 1, wherein the mounting assembly comprises a mounting plate (6), a limiting ring (7), bolts (8), clamping plates (9), fixing blocks (10) and fixing bolts (101), each mounting plate (6) is arranged right above each hook (5), the limiting ring (7) of each semi-ring structure is fixedly connected to the bottom end position of each mounting plate (6), each bolt (8) is slidably arranged on one side of the lower portion of each limiting ring (7), each clamping plate (9) is slidably sleeved on each bolt (8), one side of the clamping plate, which is not connected with the bolts (8), is in butt fit with the other side of the lower portion of the limiting ring (7), each fixing block (10) is fixedly connected to one side of the lower portion of each limiting ring (7), and is penetrated by the corresponding bolts (8), and each fixing bolt (101) is arranged on each fixing block (10) in a rectangular trend distribution thread manner and is in threaded fit with the corresponding bolts (8).
  3. 3. The pit safety hook for preventing the undershoot of the elevator car according to claim 2, further comprising a first magnetic ring (11) and a second magnetic ring (12), wherein each two first magnetic rings (11) are fixedly connected to the other end of each telescopic rod (4) and are positioned in the corresponding limiting cylinder (3), each two second magnetic rings (12) are fixedly connected to the inside of each limiting cylinder (3) in an up-down distribution manner, the centers of each two first magnetic rings (11) and each two second magnetic rings (12) are kept on the same vertical line, the two first magnetic rings (11) are positioned between the two second magnetic rings (12), after the first magnetic rings (11) and the second magnetic rings (12) are arranged, two ends of one spring (13) are fixedly connected with one second magnetic ring (12) and one first magnetic ring (11) respectively, two ends of the other spring (13) are fixedly connected with the other first magnetic ring (11) and the other second magnetic ring (12) respectively, the two first magnetic rings (11) and the other magnetic ring (12) are arranged opposite to the other magnetic ring (12), and the other magnetic ring (11) and the other magnetic ring (12) are arranged opposite to the first magnetic ring and the other magnetic ring (12).
  4. 4. A pit safety hook for preventing undershoot of an elevator car according to claim 3, further comprising a distance sensor (14), a controller (15) and an alarm (16), wherein each distance sensor (14) is installed at the center of each supporting plate (2) and aligned with the corresponding hook (5) in the vertical direction, the controller (15) is installed at one side of the top end of the bottom plate (1), the alarm (16) is installed at the other side of the top end of the bottom plate (1) and symmetrically distributed with the distance sensor (14), and the distance sensor (14) and the alarm (16) are electrically connected with the controller (15).
  5. 5. Pit safety hook for preventing undershoot of elevator car according to claim 4, characterized in that a plurality of mounting holes are provided at the top end of each mounting plate (6).
  6. 6. Pit safety hook for preventing undershoot of elevator car according to claim 5, characterized in that each first magnetic ring (11) has the same structure as each second magnetic ring (12).

Description

Pit safety hook for preventing elevator car from undershooting Technical Field The utility model belongs to the technical field of elevator safety protection, and particularly relates to a pit safety hook for preventing an elevator car from undershooting. Background The elevator car is a metal structural member for loading passengers or cargoes in the elevator, and is formed by main components such as a car bottom, a car wall, a car top, a car door and the like by means of four guide rails on an upright post of a car frame and making vertical lifting motion along the guide rails to finish the passenger or cargo carrying task. In the field of elevator safety, aiming at the possible undershoot condition of a traditional elevator car, a damper is arranged at the center of a car bottom in the prior common protective measure. The principle is that when the elevator car accidentally undershoots, the damper plays a role in buffering, absorbs the undershoot energy of the elevator car, further slows down the descent speed of the elevator car, and reduces the accident hazard degree. However, there is a limitation in the manner of arranging the buffer device only at the central position of the car bottom, the buffer force is mainly concentrated to act on the central region of the car bottom of the elevator car due to the design of the central buffer, in practical accidents, unbalanced load, inclination and other conditions can be generated when the elevator car undershoots, and the buffer at the central position is difficult to comprehensively and uniformly disperse and absorb the impact energy, so that the overall structure of the elevator car can still be damaged to a greater extent when the impact force is applied to the non-central position, and even the safety of passengers in the elevator car can be influenced. Therefore, there is a particular need for a pit safety hook that prevents undershoot of an elevator car to address the above-described problems. Disclosure of utility model In order to overcome the defect that the buffer device is only arranged at the central position of the elevator car bottom of the traditional elevator car, the buffer force is concentrated, so that impact energy is difficult to comprehensively and uniformly disperse and absorb when the elevator car is impacted greatly in a non-central manner, the elevator car structure is easy to damage, and the safety of passengers is endangered, the utility model provides a pit safety hook for preventing the elevator car from being impacted. The utility model discloses a pit safety hook for preventing an elevator car from undershooting, which comprises a bottom plate, supporting plates, limiting cylinders, telescopic rods, hooks, mounting assemblies and springs, wherein the supporting plates are arranged on the bottom plate in two rows and two columns, the adjacent limiting cylinders are in one group, four groups are respectively fixedly connected with each supporting plate, each telescopic rod is slidably arranged on each limiting cylinder, one end of each telescopic rod extends to the outside of each limiting cylinder, the other end of each telescopic rod extends to the inside of each limiting cylinder, the maximum diameter of the other end of each telescopic rod is larger than the diameter of an opening at one end of each limiting cylinder, each hook is fixedly connected between one ends of the adjacent telescopic rods, each two springs are vertically arranged in each limiting cylinder, one spring is sleeved at the other end of each corresponding telescopic rod, two ends of each spring are fixedly connected with the vertically aligned limiting cylinder and the vertically aligned telescopic rod respectively, each group of limiting cylinders, each group of telescopic rods and each telescopic rod are fixedly connected with each vertically aligned limiting cylinder, each telescopic rod and each buffer assembly are jointly arranged on the four hooks. In addition, it is particularly preferred that the mounting assembly comprises mounting plates, limiting rings, bolts, clamping plates, fixing blocks and fixing bolts, each mounting plate is arranged right above each hook, the limiting rings of each semi-ring structure are fixedly connected to the bottom end positions of each mounting plate, each bolt is slidably arranged on one side of the lower portion of each limiting ring, each clamping plate is slidably sleeved on each bolt, one side of each clamping plate, which is not connected with each bolt, is in butt fit with the other side of the lower portion of each limiting ring, each fixing block is fixedly connected to one side of the lower portion of each limiting ring and is penetrated by the corresponding bolt, and each fixing bolt is arranged on each fixing block along rectangular trend distribution threads and is in threaded fit with the corresponding bolt. In addition, it is particularly preferable that the device further comprises a first magnetic r