CN215519859U

CN215519859U - Automatic anti-falling device of attached lifting scaffold

Info

Publication number: CN215519859U
Application number: CN202121087793.7U
Authority: CN
Inventors: 朱若愚
Original assignee: Kunming Xizhao Technology Co ltd
Current assignee: Kunming Xizhao Technology Co ltd
Priority date: 2021-05-20
Filing date: 2021-05-20
Publication date: 2022-01-14
Anticipated expiration: 2031-05-20

Abstract

An automatic anti-falling device for an attached lifting scaffold, comprising a horizontal central axis (4), two ratchet wheels (2) with the same diameter but staggered ratchet teeth that are fixedly sleeved on the central axis, and two ratchet wheels (2) that are symmetrically and fixedly mounted on the outside of the ratchet wheel. A runner (1) with a larger diameter than the ratchet, two anti-falling blocks (3) installed below the ratchet, and two mounting seats (5) symmetrically installed on the outside of the runner; both ends of the central shaft are mounted on the mounting seats Above, the runner includes a wheel disc (1a) and a toothed plate (1b) evenly distributed on the outer edge of the wheel disc, and the anti-falling block is an integral hook-shaped steel plate with asymmetric two sides. The utility model can quickly prevent the attachment type lifting scaffold from accidentally falling during the lifting process, control the falling distance of the scaffold body, and has the advantages of simple installation and operation, safety and reliability, and convenient dismantling, maintenance and repair.

Description

Automatic anti-falling device of attached lifting scaffold

Technical Field

The utility model relates to the technical field of anti-falling devices of attached lifting scaffolds for building construction.

Background

The attached lifting scaffold is a novel external scaffold which is developed at the beginning of the 20 th century, has a certain height, is attached to an engineering structure, depends on lifting equipment and a device of the attached lifting scaffold, climbs or descends along with the engineering structure layer by layer, is provided with an anti-overturning and anti-falling device, can change high-altitude operation into low-position operation, changes suspended operation into support body internal operation, has the obvious advantages of safety, convenience and the like, and is widely adopted in high-rise building construction.

The attached lifting scaffold mainly comprises an attached lifting scaffold body provided with a climbing frame guide rail, an attached support, an anti-overturning device, an anti-falling device, a lifting mechanism, a control device and the like. The anti-falling device of the attached lifting scaffold in the prior art can well play a role in preventing falling in the normal lifting process, but the anti-falling is difficult to realize in real time in the falling process. In the prior art, most of falling-preventing devices of the frame body are detached during the falling of the frame body in the engineering, and other auxiliary measures are adopted to ensure the safety of the falling process of the frame body, and the measures are often complicated, time and labor are wasted during operation, the cost for falling and falling prevention is high, and a high safety risk exists.

Disclosure of Invention

The utility model aims to solve the problems in the prior art, and provides the automatic anti-falling device for the attached lifting scaffold, which can quickly prevent the attached lifting scaffold from accidentally falling in the lifting process, control the falling distance of the scaffold body, and is simple and convenient to install, operate, safe, reliable, convenient to detach, maintain and repair.

The purpose of the utility model is realized by the following technical scheme:

an automatic anti-falling device of an attached lifting scaffold comprises a horizontal central shaft (4), two ratchets (2) fixedly sleeved on the central shaft and having the same diameter and staggered ratchets, two rotating wheels (1) symmetrically and fixedly arranged on the outer sides of the ratchets and having the diameter larger than that of the ratchets, two anti-falling blocks (3) correspondingly arranged below the ratchets, and two mounting seats (5) symmetrically arranged on the outer sides of the rotating wheels;

the both ends of center pin (4) are installed on mount pad (5), runner (1) include rim plate (1a) and equipartition in pinion rack (1b) of rim plate outer fringe, and pinion rack (1b) is along rim plate outer fringe to one side slope, and the incline direction of pinion rack is opposite with the ratchet incline direction of ratchet, and the external diameter of ratchet is the same with rim plate (1a) diameter of runner.

Prevent weighing down piece (3) for the asymmetric integral steel sheet of going up hook-shaped in both sides, seted up mounting hole (3a) at steel sheet main part middle part, one side of steel sheet main part has and rolls over behind the last extension to inboard hook tooth (3b) that can contact with the ratchet of ratchet, the another side has sharp tooth (3c) that can insert in the tooth's socket between the ratchet, the area of sharp tooth is greater than the area of hook tooth, prevent weighing down piece's focus is partial to sharp tooth one side, prevent weighing down the piece and install in the mounting hole on horizontal prevents weighing down axle (6), prevent weighing down the both ends of axle and install in mount pad (5) lower part.

Furthermore, the mounting seat (5) is a shell formed by welding steel plates, the lower part of the inner side of the mounting seat is provided with an arc-shaped groove (5a), and a pair of rollers (5b) with arc-shaped roller surfaces are symmetrically mounted on two sides of the upper groove and the lower groove in the mounting seat respectively.

The anti-falling device is characterized in that the rotating wheel and the ratchet wheel are arranged on the same central shaft, and the anti-falling block is arranged below the ratchet wheel and can freely rotate along the anti-falling shaft. The utility model is arranged between a building wall and an attached lifting scaffold frame body, an installation seat is attached to the building wall through a wall-through screw rod, and a toothed plate of a rotating wheel is inserted between crosspieces of a climbing frame guide rail of the scaffold frame body. When the scaffold frame body accident falls, the tooth point of the falling prevention block is timely inserted into the tooth groove of the ratchet wheel to play a braking role, meanwhile, the toothed plate of the rotating wheel also blocks the crosspiece of the climbing frame guide rail, the combined action prevents the frame body from further falling, and construction safety is guaranteed.

The utility model completely adopts mechanical braking, can play the role of automatic falling prevention in the ascending and descending processes of the scaffold body, and has good falling prevention effect. The anti-falling device has the advantages of simple and reliable structure, convenience in mounting and dismounting and strong universality, meets the requirements of relevant building construction specifications, effectively solves the anti-falling problem in the lifting process of the attached lifting scaffold body, and greatly improves the safety of building construction.

Drawings

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

FIG. 2 is a partial cross-sectional top view taken along a central axis;

FIG. 3 is a cross-sectional view A-A of FIG. 1;

fig. 4 is a schematic view of the installation and use of the present invention.

Detailed Description

The utility model is further explained by the accompanying drawings.

Referring to fig. 1, 2 and 3, the automatic anti-falling device for the attached lifting scaffold comprises a horizontal central shaft 4, two ratchets 2 fixedly sleeved on the central shaft and having the same diameter and staggered ratchets, two rotating wheels 1 symmetrically and fixedly arranged on the outer sides of the ratchets and having the diameter larger than that of the ratchets, two anti-falling blocks 3 correspondingly arranged below the ratchets, and two mounting seats 5 symmetrically arranged on the outer sides of the rotating wheels.

The both ends of center pin 4 are installed on mount pad 5, runner 1 includes rim plate 1a and equipartition in the pinion rack 1b of rim plate outer fringe, and pinion rack 1b inclines to one side along the rim plate outer fringe, and the incline direction of pinion rack is opposite with the ratchet incline direction of ratchet, and the external diameter of ratchet is the same with the rim plate 1a diameter of runner.

The anti-falling block 3 is an integral upper hook-shaped steel plate with two asymmetric sides, a mounting hole 3a is formed in the middle of a steel plate main body, one side of the steel plate main body is provided with hook teeth 3b which extend backwards and are folded inwards and can be contacted with ratchets of a ratchet wheel, the other side of the steel plate main body is provided with sharp teeth 3c which can be inserted into tooth grooves between the ratchets, the area of the sharp teeth is larger than that of the hook teeth, the anti-falling block is an eccentric block with the gravity center deviated to one side of the sharp teeth, the tooth tops of the hook teeth 3b can be guaranteed to be collided with the ratchet wheel under the action of self weight to prevent swinging, and the tooth tips of the anti-falling block can be inserted into the ratchet wheel to be meshed with the ratchet wheel when the scaffold frame body stalls and falls down, so that the braking effect is achieved.

The anti-falling block 3 is arranged on a horizontal anti-falling shaft 6 through a mounting hole, and two ends of the anti-falling shaft are arranged at the lower part of the mounting seat 5. The mounting seat 5 is a shell formed by welding steel plates, the lower part of the inner side of the mounting seat is provided with a circular arc-shaped groove 5a for sleeving two vertical rods of the climbing frame guide rail from two sides respectively, two sides of the upper groove and the lower groove in the mounting seat are symmetrically provided with a pair of rollers 5b with arc-shaped roller surfaces respectively, the arc-shaped roller surfaces of the rollers are in contact with the vertical rods of the climbing frame guide rail, the vertical rods are fixed, and friction when the climbing frame guide rail goes up and down is reduced.

As shown in fig. 3 and 4, the present invention is installed between a building wall 9 and an attached lifting scaffold frame body 10, the installation base 5 of the present invention is attached to the building wall through a wall-through screw 8, the installation base is arranged at a position to be installed from top to bottom along a vertical upright of a climbing frame guide rail 7, and a toothed plate 1b of a rotating wheel is inserted between crosspieces 7a of the climbing frame guide rail. In order to more clearly express the mounting structure and position of the rotating wheel 1, the ratchet wheel 2 and the anti-falling block 3, a crosspiece 7a of the climbing frame guide rail is schematically drawn in fig. 3. The anti-falling devices are arranged at intervals of the height of a floor, and at least 3 anti-falling devices are arranged.

In the work progress, when the inserted lift scaffold support body is ascending or descending in-process proruption trouble and is weighed down, the frame rail 7 that climbs of inserted lift scaffold support body is weighed down simultaneously along with the support body, climbs the crosspiece 7a of frame rail and drives the runner rotation promptly, triggers ratchet simultaneously and rotates. The falling speed is far higher than the rotating speed of the rotating wheel driven during normal lifting, so that the rotating speed of the ratchet wheel is higher, the tooth tips of the falling prevention blocks are inserted into tooth grooves of the ratchet wheel to be meshed with the ratchet wheel, the ratchet wheel is braked, the rotating wheel is also braked simultaneously, the crosspiece of the climbing frame guide rail is prevented from continuously falling, and the timely braking of the whole attached lifting scaffold body is realized.

The utility model is provided with the ratchet wheels with two staggered ratchets and the two anti-falling blocks, can buffer larger impact force when the scaffold falls, realizes double safety of ratchet wheel braking, and further improves timeliness and reliability of preventing the scaffold from falling by the blocking effect of the two runner toothed plates on the rail crosspiece of the climbing frame guide rail, thereby ensuring construction safety. The pinion rack of runner is along rim plate outer fringe to a lopsidedness, and during the installation, as shown in fig. 3, the pinion rack that inserts between the crosspiece is the skew state that makes progress, and when adhesion type lift scaffold support body and climb a guide rail and upwards lift, the crosspiece that climbs a guide rail upwards promotes the pinion rack, and the pinion rack can be in the same place to rotate, can not block the crosspiece formation. When the attached lifting scaffold frame body and the climbing frame guide rail accidentally fall down, the upwards inclined toothed plate blocks the crosspiece to support the crosspiece, the inclination direction of the ratchet wheel is opposite to that of the toothed plate, the tooth tip of the falling prevention block is inserted into the tooth groove of the ratchet wheel to upwards prop the ratchet wheel, and braking is achieved. The outer diameter of the ratchet wheel is generally not larger than the diameter of the wheel disc of the rotating wheel, so that the toothed plate of the rotating wheel is ensured to have enough length to be inserted between the crosspieces of the climbing frame guide rail, and the interference of the ratchet wheel to the movement of the climbing frame guide rail is avoided.

Claims

1. An automatic anti-falling device for an attached lifting scaffold, characterized in that it comprises a horizontal central axis (4), two ratchet wheels (2) with the same diameter but staggered ratchet teeth that are fixedly sleeved on the central axis, symmetrically fixed Two runners (1) with a larger diameter than the ratchet mounted on the outside of the ratchet, two anti-fall blocks (3) mounted below the ratchet correspondingly, and two mounting seats (5) symmetrically mounted on the outside of the runner;

Both ends of the central shaft (4) are mounted on the mounting seat (5), and the runner (1) includes a wheel disc (1a) and a toothed plate (1b) evenly distributed on the outer edge of the wheel. 1b) It is inclined to one side along the outer edge of the wheel disc, the inclination direction of the tooth plate is opposite to the inclination direction of the ratchet teeth of the ratchet wheel, and the outer diameter of the ratchet wheel is the same as the diameter of the wheel disc (1a) of the runner;

The anti-falling block (3) is an integral hook-shaped steel plate with asymmetric two sides, a mounting hole (3a) is opened in the middle of the steel plate main body, and one side of the steel plate main body is extended upward and then folded to the inside so as to be in contact with the ratchet teeth of the ratchet wheel. The hook teeth (3b), the other side has tines (3c) that can be inserted into the tooth slots between the ratchet teeth, the area of the tines is larger than the area of the hook teeth, the center of gravity of the anti-falling block is biased towards the tines side, and the The falling block is installed on the horizontal anti-falling shaft (6) through the installation hole, and both ends of the anti-falling shaft are installed on the lower part of the installation seat (5).

2. The automatic anti-falling device of an attached lifting scaffold according to claim 1, characterized in that the mounting seat (5) is a shell welded with steel plates, and the inner lower part of the mounting seat is provided with a circular arc A pair of rollers (5b) with arc-shaped roller surfaces are installed symmetrically on both sides of the upper and lower grooves in the mounting seat.