阅读说明：本技术 一种电梯防坠用辅助制动机构 (Auxiliary braking mechanism for preventing elevator from falling ) 是由 张敏 于 2019-11-11 设计创作，主要内容包括：本发明公开了一种电梯防坠用辅助制动机构,包括电梯井和电梯厢,所述电梯厢的两侧内壁上对称固接有两个安装块,每个所述安装块的内部均开设有一条横向设置的滑槽,且每个滑槽内均滑动连接有一根传动杆,其中两根所述传动杆分别贯穿电梯厢的两侧侧壁,且两根传动杆位于电梯厢外部的一端均固接有一块防滑制动板,两根所述传动杆远离防滑制动板的一端均与滑槽内壁间固定连接有第一弹簧。本发明通过利用电梯厢下坠时配重块的严重失重效果进行传动,可使两块防滑制动板迅速弹出与电梯井的两侧侧壁接触,利用其与电梯井侧壁间的摩擦力来对电梯厢进行缓冲降速,从而便于后续利用限速器操纵安全钳制停电梯厢,安全系数更高。(The invention discloses an auxiliary braking mechanism for preventing an elevator from falling, which comprises an elevator shaft and an elevator cage, wherein two mounting blocks are symmetrically and fixedly connected to the inner walls of two sides of the elevator cage, a transversely arranged sliding groove is formed in each mounting block, a transmission rod is connected in each sliding groove in a sliding manner, the two transmission rods respectively penetrate through the side walls of two sides of the elevator cage, an anti-skidding braking plate is fixedly connected to one end, located outside the elevator cage, of each transmission rod, and a first spring is fixedly connected between one end, far away from the anti-skidding braking plate, of each transmission rod and the inner wall of the corresponding sliding groove. The elevator car is driven by utilizing the severe weightlessness effect of the counterweight block when the elevator car falls down, so that the two anti-skid brake plates can be quickly popped out to be in contact with the side walls on two sides of the elevator shaft, and the elevator car is buffered and decelerated by utilizing the friction force between the anti-skid brake plates and the side walls of the elevator shaft, so that the elevator car can be conveniently and safely clamped and stopped by utilizing the speed limiter subsequently, and the safety coefficient is higher.)

1. An auxiliary braking mechanism for preventing an elevator from falling comprises an elevator shaft (1) and an elevator cage (2), and is characterized in that two mounting blocks (3) are symmetrically and fixedly connected to inner walls of two sides of the elevator cage (2), a transverse sliding chute (4) is formed in each mounting block (3), a transmission rod (5) is connected in each sliding chute (4) in a sliding mode, the two transmission rods (5) penetrate through side walls of two sides of the elevator cage (2) respectively, an anti-skidding braking plate (6) is fixedly connected to one end, located outside the elevator cage (2), of each transmission rod (5), a first spring (7) is fixedly connected between one end, away from the anti-skidding braking plate (6), of each transmission rod (5) and the inner wall of the corresponding sliding chute (4), a horizontally arranged reset rod (8) is fixedly connected to one end, away from the anti-skidding braking plate (6), of each transmission rod (5), two first spring (7) correspond the cover just and establish the outside at release link (8), two the one end that transfer line (5) were kept away from in release link (8) is equallyd divide and is do not run through sliding connection with two installation pieces (3), two inside spacing trigger mechanism that all still is equipped with cooperation transfer line (5) and uses of spout (4).

2. The auxiliary braking mechanism for preventing the elevator from falling down is characterized in that the limiting triggering mechanism comprises two vertically arranged mounting grooves (9) formed in the inner top wall of each sliding groove (4), a limiting insert block (10) is slidably connected inside each mounting groove (9), a limiting slot matched with the limiting insert block (10) is formed in the middle of the upper end of each driving rod (5), a plurality of second springs (11) are fixedly connected between the upper end of each limiting insert block (10) and the inner top wall of each mounting groove (9), a first pull rope (12) is fixedly connected to the bottom of the side edge of each limiting insert block (10), each first pull rope (12) vertically penetrates through the mounting block (3) downwards and is fixedly connected with a movable pulley (13), and a second pull rope (14) is fixedly connected to each second movable pulley (13), the inner walls of two sides of the elevator cage (2) are fixedly connected with a fixed pulley (15) matched with the second pull ropes (14) for use, and the two second pull ropes (14) sequentially pass around the fixed pulley (15) and the movable pulley (13) and then are fixedly connected with a balancing weight (16).

Technical Field

The invention relates to the technical field of elevators, in particular to an auxiliary braking mechanism for preventing an elevator from falling.

Background

Nowadays, the elevator falling accident is very easy to happen due to incorrect use and potential safety hazards existing in the elevator, so that casualties and economic losses are caused. The existing safety protection device for preventing the elevator from falling is a safety clamp operated by a speed limiter, and when the elevator falls to a certain speed, the speed limiter operates the safety clamp to stop the elevator cage. However, when the dropping speed of the elevator cage is high, the safety tongs are operated, so that great damage is easily caused to the elevator cage, passengers, a guide rail and the like.

Disclosure of Invention

The invention aims to solve the problems in the background art and provides an auxiliary braking mechanism for preventing an elevator from falling.

In order to achieve the purpose, the invention adopts the following technical scheme: an auxiliary braking mechanism for preventing falling of an elevator comprises an elevator shaft and an elevator cage, wherein two mounting blocks are symmetrically and fixedly connected to the inner walls of two sides of the elevator cage, a sliding groove which is transversely arranged is formed in each mounting block, a transmission rod is slidably connected in each sliding groove, two transmission rods respectively penetrate through the side walls of two sides of the elevator cage, an anti-skidding braking plate is fixedly connected to one end, located outside the elevator cage, of each transmission rod, a first spring is fixedly connected between one end, far away from the anti-skidding braking plate, of each transmission rod and the inner wall of the corresponding sliding groove, a horizontally arranged reset rod is fixedly connected to one end, far away from the anti-skidding braking plate, of each transmission rod, the two first springs are just correspondingly sleeved outside the reset rod, and one ends, far away from the transmission rods, of the two reset rods are respectively connected with the two mounting, two the inside spacing trigger mechanism that all still is equipped with the cooperation transfer line and uses of spout.

In the auxiliary braking mechanism for preventing the elevator from falling, the limiting triggering mechanism comprises two vertically arranged mounting grooves which are respectively arranged on the inner top walls of the two sliding grooves, a limiting insert block is respectively connected in each mounting groove in a sliding manner, a limiting slot matched with the limiting insert block is respectively arranged in the middle of the upper ends of the two transmission rods, a plurality of second springs are fixedly connected between the upper end of each limiting insert block and the inner top wall of the mounting groove, wherein the bottoms of the side edges of the two limiting insertion blocks are fixedly connected with a first pull rope, each first pull rope vertically penetrates through the mounting block downwards and is fixedly connected with a movable pulley, each second movable pulley is also fixedly connected with a second pull rope, and the inner walls of the two sides of the elevator cage are fixedly connected with a fixed pulley matched with the second pull ropes for use, and the two second pull ropes are fixedly connected with a balancing weight after sequentially bypassing the fixed pulley and the movable pulley.

Compared with the prior art, this elevator prevents weighing down with supplementary arrestment mechanism's advantage lies in:

1. the transmission rod and the two anti-skidding brake plates are limited by the limiting insertion block limited by the gravity of the balancing weight, and the severe weightlessness effect of the balancing weight when the elevator car falls down is utilized to trigger transmission, so that the two anti-skidding brake plates are popped out to be in contact with the side walls on two sides of the elevator shaft, and the friction between the anti-skidding brake plates and the side walls of the elevator shaft is utilized to buffer and decelerate the elevator car, so that the elevator car can be conveniently and subsequently stopped by using a speed limiter to operate safety tongs, and the braking process of the elevator is safer;

2. through setting up fixed pulley and movable pulley cooperation balancing weight and spacing inserted block and using, can make first stay cord be about three times of balancing weight gravity to the pulling force of spacing inserted block to can make spacing inserted block respond to more sensitively to the situation of change of balancing weight gravity, and then make the anti-skidding braking plate pop out more rapidly and slow down elevator railway carriage or compartment, factor of safety is higher.

Drawings

FIG. 1 is a schematic structural diagram of an auxiliary braking mechanism for preventing an elevator from falling, which is provided by the invention;

FIG. 2 is an enlarged view of the structure of part A in FIG. 1;

FIG. 3 is an enlarged view of the structure of part B in FIG. 1;

FIG. 4 is a side sectional view of the inside of the mounting block of the auxiliary braking mechanism for preventing falling of the elevator.

In the figure: 1 elevator shaft, 2 elevator cabs, 3 installation blocks, 4 sliding grooves, 5 transmission rods, 6 anti-skid brake plates, 7 first springs, 8 reset rods, 9 installation grooves, 10 limiting insertion blocks, 11 second springs, 12 first pull ropes, 13 movable pulleys, 14 second pull ropes, 15 fixed pulleys and 16 balancing weights.

Detailed Description

The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.