CN115676557A - Bidirectional speed-limiting braking device for preventing elevator roof from falling - Google Patents

Abstract

The invention discloses a bidirectional speed-limiting braking device for preventing an elevator roof from falling, which comprises an elevator shaft, wherein an elevator car is arranged in the elevator shaft, guide rails are arranged on two sides in the elevator shaft, the elevator car is connected with the guide rails through guide shoes, a tractor is arranged in a machine room above the elevator car, safety tongs are arranged at two ends of a lower cross beam of the elevator car and matched with the guide rails, a connecting rod mechanism is arranged between the two safety tongs and positioned on the upper surface of the elevator car, a first speed limiter is fixedly connected above the elevator shaft, a first tensioning wheel is arranged below the elevator car, the first tensioning wheel is connected with a slide rail through a guide block, the first tensioning wheel is connected with the first speed limiter in series through a steel cable, a second speed limiter is fixedly connected below the first tensioning wheel, and a balancing weight is fixedly connected below the second speed limiter; the invention can realize the function of preventing the elevator from bumping against the top while preventing the elevator from falling into the shaft, thereby increasing a guarantee for the safe operation of the elevator.

Description

Bidirectional speed-limiting braking device for preventing elevator roof from falling

Technical Field

The invention belongs to the technical field of elevator manufacturing, and particularly relates to a bidirectional speed-limiting braking device for preventing an elevator roof from falling.

Background

An elevator is a vertical elevator powered by an electric motor and equipped with a box-like car for carrying people or cargo in a multi-story building. There are also steps, where the tread plates are mounted on a track for continuous operation, commonly known as escalators or moving walkways. A fixed lifting device serving a prescribed floor. A vertical lift elevator has a car that travels between at least two vertical rows of rigid guide rails. The size and the structural form of the car are convenient for passengers to get in or get out or load and unload goods. It is customary to refer to elevators as a generic term for vertical transportation in buildings, regardless of their driving mode.

At present, along with the improvement of living standard day by day, the range of elevator application is also more and more, consequently also caused elevator incident frequent emergence like this, traditional elevator safety device only can prevent the emergence of elevator falling into the well accident, both guaranteed operation safety through overspeed governor safety tongs system, this is the essential safety device of elevator, when the elevator exceeds speed, the operation is out of control or the linkage breaks, overspeed governor safety tongs device stops the elevator car on the guide rail rapidly, and keep quiescent condition, it is monitoring the speed of controlling the car at any time, when the overspeed condition appears, namely 115% of elevator rated speed, can in time send out the signal, produce mechanical action and cut off power supply circuit in turn, make the hauler brake. If the elevator still can't brake then install the safety tongs action in the car bottom and force the car to stop to avoid taking place casualties and equipment damage accident, but the elevator accident that now more and more takes place in the society is the accident of dashing the top, and the accident of dashing the top is all very big to personnel and equipment harm, consequently urgently need one kind simultaneously to prevent falling down the elevator of well.

Disclosure of Invention

The invention aims to provide a bidirectional speed-limiting braking device for preventing an elevator roof from falling, aiming at solving the problems of preventing the elevator roof from falling into a well, preventing the elevator roof from falling and the like.

The invention realizes the purpose through the following technical scheme: the utility model provides a two-way speed limit arresting gear for elevator scour protection top is prevented falling, includes the elevator well, be equipped with elevator car in the elevator well, the inside both sides of elevator well all are equipped with the guide rail, elevator car with the guide rail is connected through leading boots, elevator car top computer lab is equipped with hauler, its characterized in that: safety tongs are all installed at elevator car bottom end rail both ends, safety tongs with the guide rail cooperatees, two between the safety tongs and be located elevator car upper surface is equipped with link mechanism, the first overspeed governor of elevator well top fixedly connected with, elevator car below is equipped with first tight pulley that rises, first tight pulley that rises with the guide rail passes through the slider and connects, first tight pulley that rises with first overspeed governor establishes ties through the cable wire, first tight pulley below fixedly connected with second overspeed governor that rises, second overspeed governor below fixedly connected with balancing weight, the inside top of elevator well just is located the fixed second that is equipped with in first overspeed governor below rises and tightly takes turns, the second overspeed governor with the second rises and tightly takes turns to establish ties through the cable wire.

Further, link mechanism includes the mobile jib, the equal fixedly connected with pull rod in mobile jib both ends, two the pull rod lower extreme respectively with correspond the safety tongs switch is connected, pull rod middle outside diameter face with connect through a plurality of sliding shafts between the elevator car, two adjacent be equipped with reset spring between the sliding shaft, mobile jib top one side is equipped with the depression bar, depression bar one end with the mobile jib is connected through the pivot, in the middle of the depression bar with the elevator car top surface is connected through the pivot.

Furthermore, one end of a steel rope connected between the first speed limiter and the first tensioning wheel is connected with one end of the elevator car, and the other end of the steel rope is fixedly connected with the middle of the main rod.

Furthermore, one end of a steel rope connected between the second speed limiter and the second tensioning wheel is connected with the elevator car, and the other end of the steel rope is fixedly connected with the bottom of one end of the pressing rod.

Furthermore, a solenoid valve is arranged on one side of the main rod and electrically connected with the traction machine.

Has the beneficial effects that: compared with the prior art, the invention has the following beneficial effects:

(1) The first speed limiter and the first tensioning wheel are matched to keep the tension force of a steel cable all the time when the elevator runs, when the elevator descends and exceeds the speed, the speed limiter pulls a main rod of a link mechanism on the safety tongs through the steel cable, so that the pull rod drives the safety tongs to be pulled, the safety tongs are locked on the slide rail, and when the main rod is pulled up, the power supply of the tractor is cut off through the electromagnetic valve, so that the tractor can also provide locking force for stopping the elevator running, and the phenomenon that the elevator falls into the well can be prevented;

(2) The cooperation of second overspeed governor and second tight pulley that rises, because second overspeed governor fixed connection is on first tight pulley that rises, consequently also float along with the elevator removes, the second tight pulley that rises is fixed on the elevartor shaft top, consequently also just so form the tensile force to the cable wire, when the condition of the hypervelocity is risen to the emergence elevator, second overspeed governor transmission signal, and through the depression bar on the cable wire pulling link mechanism, when down pulling the depression bar, also produce an ascending pulling force to the mobile jib, just so can lock the safety tongs on the slide rail, consequently also can spread stop signal to the hauler, just so can prevent that the elevator from taking place the bumping top accident.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is a perspective view of the present invention;

fig. 4 is a schematic structural diagram of the link mechanism of the present invention.

In the figure: 1-an elevator well, 2-an elevator car, 3-a guide rail, 4-a traction machine, 5-a safety tongs, 6-a link mechanism, 7-a first speed limiter, 8-a first tension pulley, 9-a second speed limiter, 10-a balancing weight, 11-a second tension pulley and 12-an electromagnetic valve;

61-main rod, 62-pull rod, 63-sliding shaft, 64-return spring and 65-pressure rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Combine a two-way speed limit arresting gear who is used for elevator scour protection top to prevent falling that fig. 1 to fig. 4 show, including elevator well 1, be equipped with elevator car 2 in the elevator well 1, 1 inside both sides of elevator well all are equipped with guide rail 3, and elevator car 2 is connected through leading boots with guide rail 3, and 2 top computer rooms of elevator car are equipped with hauler 4, its characterized in that: safety tongs 5 are all installed at 2 bottom end of the crossbeam of elevator car 2 both ends, safety tongs 5 cooperatees with guide rail 3, just be located 2 upper surfaces of elevator car between two safety tongs 5 and be equipped with link mechanism 6, 1 top fixedly connected with first overspeed governor 7 of elevator well, 2 below of elevator car is equipped with first tight pulley 8 that rises, first tight pulley 8 passes through the slider with guide rail 3 and is connected, first tight pulley 8 that rises establishes ties through the cable wire with first overspeed governor 7, 8 below fixedly connected with second overspeed governor 9 of first tight pulley that rise, 9 below fixedly connected with balancing weight 10 of second overspeed governor, 1 inside top of elevator well just is located 7 below fixed second tight pulley 11 that rises of first overspeed governor, second overspeed governor 9 and second tight pulley 11 that rise establish ties through the cable wire.

The link mechanism 6 comprises a main rod 61, pull rods 62 are fixedly connected to two ends of the main rod 61, the lower ends of the two pull rods 62 are respectively connected with corresponding switches of the safety tongs 5, the middle outer diameter surface of each pull rod 62 is connected with the elevator car 2 through a plurality of sliding shafts 63, a reset spring 64 is arranged between two adjacent sliding shafts 63, a pressing rod 65 is arranged on one side above the main rod 61, one end of the pressing rod 65 is connected with the main rod 61 through a rotating shaft, the middle of the pressing rod 65 is connected with the top surface of the elevator car 2 through a rotating shaft, bidirectional control over the safety tongs can be conveniently achieved, one end of a steel cable connected between a first speed limiter 7 and a first tensioning wheel 8 is connected with one end of the elevator car 2, the other end of the steel cable is fixedly connected with the middle of the main rod 61, braking of an anti-falling well can be guaranteed, one end of the steel cable connected between a second speed limiter 9 and a second tensioning wheel 11 is connected with the elevator car 2, the other end of the pressing rod 65 is fixedly connected with the bottom, top braking can be guaranteed, a solenoid valve 12 is arranged on one side of the main rod 61, the solenoid valve 12 is electrically connected with the traction machine 4, a signal sending is convenient for sending out an anti-falling accident, and stopping power supply to the traction machine.

The working principle is as follows: when the elevator is used, the first speed limiter and the first tensioning wheel are matched to keep the tension force of the steel cable all the time when the elevator runs, when the elevator descends and exceeds the speed, the speed limiter pulls the main rod of the link mechanism on the safety tongs through the steel cable, so that the pull rod drives the safety tongs to be pulled, the safety tongs are locked on the guide rail, when the main rod is pulled up, the power supply of the tractor is cut off through the electromagnetic valve, so that the tractor can also provide locking force for stopping the elevator running, the phenomenon that the elevator falls down into the well can be prevented, the second speed limiter and the second tensioning wheel are matched, the second speed limiter is fixedly connected to the first tensioning wheel and floats along with the movement of the elevator, the second tensioning wheel is fixed at the top end of the elevator shaft, therefore, the tension force on the steel cable is formed, when the elevator ascends and exceeds the speed, the second speed limiter transmits a transmission signal, and when the compression rod on the link mechanism is pulled by the steel cable, an upward tension force is generated on the main rod when the compression rod is pulled downwards, the compression rod, the safety tongs can be locked on the slide rail, and the elevator can be prevented from being pushed out of an accident.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.

Claims (5)

1. The utility model provides a two-way speed limit arresting gear for elevator scour protection top is prevented falling, includes elevator well (1), be equipped with elevator car (2) in elevator well (1), elevator well (1) inside both sides all are equipped with guide rail (3), elevator car (2) with guide rail (3) are connected through leading boots, elevator car (2) top computer lab is equipped with hauler (4), its characterized in that: safety tongs (5) are all installed at elevator car (2) bottom end rail both ends, safety tongs (5) with guide rail (3) cooperate, two between safety tongs (5) and be located elevator car (2) upper surface is equipped with link mechanism (6), elevator well (1) top fixedly connected with first overspeed governor (7), elevator car (2) below is equipped with first tight pulley (8) that rises, first tight pulley (8) with guide rail (3) are connected through the slider, first tight pulley (8) that rises with first overspeed governor (7) are established ties through the cable wire, first tight pulley (8) below fixedly connected with second overspeed governor (9) that rises, second below fixedly connected with balancing weight (10) of second overspeed governor (9), elevator well (1) inside top just is located first overspeed governor (7) below is fixed and is equipped with second tight pulley (11) that rises, second overspeed governor (9) with second overspeed governor (11) are established ties through the tight pulley that rises.

2. The bidirectional speed-limiting brake device for preventing the elevator from falling off from the top of the elevator as claimed in claim 1, characterized in that: link mechanism (6) include mobile jib (61), equal fixedly connected with pull rod (62), two in mobile jib (61) both ends pull rod (62) lower extreme respectively with correspond safety tongs (5) switch is connected, in the middle of pull rod (62) the external diameter face with connect through a plurality of sliding shafts (63) between elevator car (2), two adjacent be equipped with reset spring (64) between sliding shafts (63), mobile jib (61) top one side is equipped with depression bar (65), depression bar (65) one end with mobile jib (61) are connected through the pivot, in the middle of depression bar (65) with elevator car (2) top surface is connected through the pivot.

3. The bidirectional speed-limiting brake device for preventing the elevator from falling off from the top of the elevator as claimed in claim 2, characterized in that: one end of a steel rope connected between the first speed limiter (7) and the first tensioning wheel (8) is connected with one end of the elevator car (2), and the other end of the steel rope is fixedly connected with the middle of the main rod (61).

4. The bidirectional speed-limiting brake device for preventing the elevator from falling off from the top of the elevator as claimed in claim 2, characterized in that: one end of a steel rope connected between the second speed limiter (9) and the second tensioning wheel (11) is connected with the elevator car (2), and the other end of the steel rope is fixedly connected with the bottom of one end of the pressing rod (65).

5. The bidirectional speed-limiting brake device for preventing the elevator from falling off from the top of the elevator as claimed in claim 1, characterized in that: and an electromagnetic valve (12) is arranged on one side of the main rod (61), and the electromagnetic valve (12) is electrically connected with the traction machine (4).

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