CN210313212U

CN210313212U - Anti-falling protection device for electric hoist of crane

Info

Publication number: CN210313212U
Application number: CN201921399396.6U
Authority: CN
Inventors: 李国正
Original assignee: Henan Yuhua Lifting Equipment Co ltd
Current assignee: Henan Yuhua Lifting Equipment Co ltd
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2020-04-14
Anticipated expiration: 2029-08-27

Abstract

The utility model discloses a hoist electric block protection device that prevents falling, including crossbeam and electric block, electric block fixed mounting is at the lower extreme middle part of crossbeam, and the crossbeam supports fixedly through a supporting beam, the electric block lower extreme at crossbeam middle part is fixed with anti-falling device through the connecting rod, and anti-falling device's the inboard is horizontal rotatable to be fixed with the rotary drum, and the steel cable that the electric block lower extreme is connected encircles and fix in the rotary drum outer lane, be fixed with ratchet tooth on the anti-falling device on rotary drum right side, and ratchet tooth is connected with the rotary drum transmission. The utility model discloses a make the terminal ratchet tooth in rotary drum right side pass through the stopper restriction fixed, thereby only can make the electro-magnet circular telegram stopper loosen the fixed to the ratchet tooth when starting electric block, can make the steel cable move down smoothly, when not starting electric block, the rotary drum can play the effect of restriction to the steel cable, avoids electric block's lock to die to install and breaks down and takes place the condition of falling.

Description

Anti-falling protection device for electric hoist of crane

Technical Field

The utility model relates to a hoist electric block technical field specifically is a hoist electric block protection device that prevents falling.

Background

At present, with the rapid development of the industries such as the construction of large-scale infrastructures, the energy industry, the real estate industry, the petrochemical industry, the shipbuilding industry and the like in China in recent years, the development of the heavy machinery manufacturing industry such as cranes in China is greatly driven, the types of cranes are more, such as single-beam bridge cranes, double-beam bridge cranes, gantry cranes and the like, an electric hoist is connected to the bottom of a main beam of the cranes in a sliding manner, a steel wire rope of the electric hoist is vertically downward and provided with a hook, the goods to be transported are hung, and the electric hoist and the crane are controlled to move through an operation panel or a controller so as to move the goods to a destination.

Electric block has the trouble easily when using for a long time and lack the maintenance, especially electric block's dead structure of automatic locking, in case electric block's dead structure of automatic locking became invalid, can lead to electric block's couple and the goods that the lower extreme promoted to fall, then damage equipment and goods lightly, then can cause personnel's injures and deaths by weight. Therefore, we propose a fall protection device for the electric hoist of the crane.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hoist electric block protection device that prevents falling makes the terminal ratchet tooth in rotary drum right side pass through the stopper restriction fixed, thereby only can make the electro-magnet circular telegram stopper loosen the fixed to the ratchet tooth when starting electric block, can make the steel cable move down smoothly, when not starting electric block, the rotary drum can play the effect of restriction to the steel cable, avoids electric block's lock die device to go wrong and takes place the condition of falling, has solved the problem that proposes in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: the anti-falling protection device for the electric hoist of the crane comprises a cross beam and the electric hoist, wherein the electric hoist is fixedly arranged in the middle of the lower end of the cross beam, and the cross beam is supported and fixed through a support beam;

the electric block lower extreme at crossbeam middle part is fixed with anti-falling device through the connecting rod, and anti-falling device's the inboard is horizontal rotatable to be fixed with the rotary drum, and the steel cable that the electric block lower extreme is connected encircles and fixes in the rotary drum outer lane, be fixed with ratchet tooth on the anti-falling device on rotary drum right side, and ratchet tooth is connected with the rotary drum transmission, is fixed with the stopper through the pivot on the anti-falling device of ratchet tooth upper end, and the stopper card is between ratchet tooth's the tooth, be fixed with the electro-magnet on the anti-falling device of stopper.

As an optimal implementation manner of the present invention, the upper end of the limiting block is fixed with an iron sheet, and the iron sheet is fixed on the upper end surface of the limiting block through a welding manner.

As a preferred embodiment of the present invention, the surface of the drum is surrounded by the rope grooves, and the steel rope is surrounded by the rope grooves on the surface of the drum.

As a preferred embodiment of the present invention, the connecting rod is connected to the lower end of the cross beam by welding, and the anti-falling device is fixed to the bottom of the connecting rod by welding.

As a preferred embodiment of the utility model, electric block and external controlgear electric connection, and electro-magnet and electric block's controlgear electric connection.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses a hoist electric block protection device that prevents falling makes the terminal ratchet tooth in rotary drum right side pass through the stopper restriction fixed, thereby only can make the electro-magnet circular telegram stopper loosen the fixed to the ratchet tooth when starting electric block, can make the steel cable move down smoothly, and when not starting electric block, the rotary drum can play the effect of restriction to the steel cable, avoids electric block's lock dead device to break down and takes place the condition of falling.

2. The utility model discloses a hoist electric block prevents protection device that falls is fixed with the iron sheet through the upper end that makes the stopper, and the iron sheet passes through the welded mode to be fixed at the upper end surface of stopper, and when the stopper was adsorbed in the electro-magnet circular telegram, welded fastening's iron sheet can increase the stopper by absorbent strength, guarantees that the stopper is sucked up smoothly.

3. The utility model discloses a hoist electric block protection device that prevents falling encircles through the surface that makes the rotary drum and has seted up the grooving, and the steel cable encircles in the grooving on rotary drum surface, makes the steel cable encircle to fix in the grooving on rotary drum surface, and the antiskid effect when can increasing rotary drum and grooving contact is fixed more firmly to the steel cable.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic view of the whole structure of the fall-preventing protection device for the electric hoist of the crane of the present invention;

FIG. 2 is a schematic diagram of the anti-falling device of the anti-falling protection device for the electric hoist of the crane according to the present invention;

fig. 3 is a schematic view of the structure of the drum of the fall protection device for the electric hoist of the crane.

In the figure: 1. a cross beam; 2. an electric hoist; 3. a connecting rod; 4. the anti-falling device; 5. a rotating drum; 6. a steel cord; 7. a support beam; 8. ratchet teeth; 9. a limiting block; 10. iron sheets; 11. a rotating shaft; 12. an electromagnet; 13. rope grooves.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

Referring to fig. 1-3, the present invention provides a technical solution: a falling prevention protection device for an electric hoist of a crane comprises a cross beam 1 and an electric hoist 2, wherein the electric hoist 2 is fixedly arranged in the middle of the lower end of the cross beam 1, and the cross beam 1 is supported and fixed through a support beam 7;

2 lower extremes of electric block at 1 middle part of crossbeam are fixed with anti-falling device 4 through connecting rod 3, and anti-falling device 4's inboard is horizontal rotatable to be fixed with rotary drum 5, and the steel cable 6 that 2 lower extremes of electric block are connected encircles and fixes in the 5 outer lanes of rotary drum, be fixed with ratchet tooth 8 on the anti-falling device 4 on the rotary drum 5 right side, and ratchet tooth 8 is connected with the 5 transmissions of rotary drum, is fixed with stopper 9 through pivot 11 on the anti-falling device 4 of 8 upper ends of ratchet tooth, and stopper 9 card is between the tooth of ratchet tooth 8, be fixed with electro-magnet 12 on the anti-falling device 4 of 9 upper ends of stopper.

In this embodiment (please refer to fig. 1 and 2), the ratchet teeth 8 at the right end of the rotating drum 5 are limited and fixed by the limiting block 9, only when the electric hoist 2 is started, the electromagnet 12 is powered on, so that the limiting block 9 releases the fixation of the ratchet teeth 8, the steel rope 6 can move downwards smoothly, and when the electric hoist 2 is not started, the rotating drum 5 can limit the steel rope 6, thereby avoiding the situation that the locking device of the electric hoist 2 breaks down and falls.

Wherein, the upper end of stopper 9 is fixed with iron sheet 10, and iron sheet 10 fixes the upper end surface at stopper 9 through the welded mode.

In this embodiment (please refer to fig. 2), the iron sheet 10 is fixed at the upper end of the limiting block 9, and the iron sheet 10 is fixed on the upper end surface of the limiting block 9 in a welding manner, when the electromagnet 12 is powered on to adsorb the limiting block 9, the iron sheet 10 fixed by welding can increase the adsorbed force of the limiting block 9, so as to ensure that the limiting block 9 is smoothly adsorbed.

Wherein, the surface of the rotary drum 5 is provided with rope grooves 13 in a surrounding manner, and the steel rope 6 surrounds the rope grooves 13 on the surface of the rotary drum 5.

In this embodiment (see fig. 3), the surface of the drum 5 is surrounded by the rope grooves 13, the steel rope 6 is surrounded by the rope grooves 13 on the surface of the drum 5, and the steel rope 6 is surrounded and fixed in the rope grooves 13 on the surface of the drum 5, so that the anti-slip effect when the drum 5 contacts with the rope grooves 13 can be increased, and the steel rope 6 is fixed more firmly.

The connecting rod 3 is connected to the lower end of the cross beam 1 in a welding mode, and the anti-falling device 4 is fixed to the bottom of the connecting rod 3 in a welding mode.

Wherein, electric block 2 and external controlgear electric connection, and electro-magnet 12 and electric block 2's controlgear electric connection.

It should be noted that the utility model relates to a falling-proof protection device for electric hoist of crane, which comprises a beam 1, an electric hoist 2, a connecting rod 3, a falling-proof device 4, a rotary drum 5, a steel rope 6, a supporting beam 7, ratchet teeth 8, a stopper 9, an iron sheet 10, a rotary shaft 11, an electromagnet 12 and a rope groove 13, wherein the components are all universal standard components or components known by technicians in the field, the structure and principle of the falling-proof protection device can be known by technicians in the field through technical manuals or conventional experimental methods, when the electric hoist 2 rotates to withdraw the steel rope 6, the steel rope 6 drives the rotary drum 5 and the ratchet teeth 8 to rotate clockwise, the stopper 9 has no limit effect on the ratchet teeth 8, the steel rope 6 can be withdrawn smoothly, when the steel rope 6 needs to be driven to be withdrawn, the electromagnet 12 is powered to suck the stopper 9 upwards through the iron sheet 10, before the electric hoist 2 discharges the steel rope 6, firstly, the electric hoist 2 drives the rotary drum 5 and the ratchet teeth 8 to rotate clockwise through the steel rope 6, so that the limiting block 9 can be disengaged from the engaging teeth of the ratchet teeth 8, the limiting block 9 can be smoothly sucked up by the electromagnet 12 to disengage the limitation on the ratchet teeth 8, then the electric hoist 2 rotates to put down the steel rope 6, at the moment, the ratchet teeth 8 rotate anticlockwise, the limiting block 9 has no limiting effect on the ratchet teeth 8, the electric hoist 2 can put down lifting goods at the lower ends of the steel rope 6 under the normal working condition, when the electric hoist 2 lifts the goods at a certain height, the electromagnet 12 is not electrified and does not suck the limiting block 9 any more, the limiting block 9 can be clamped between the engaging teeth of the ratchet teeth 8 under the action of gravity, if the locking device of the electric hoist 2 fails, the rotary drum 5 and the ratchet teeth 8 cannot rotate anticlockwise under the action of the limiting block 9, thereby can fix steel cable 6, avoid the goods that steel cable 6 is down to take place to fall.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. 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 description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a hoist electric block protection device that prevents falling, includes crossbeam (1) and electric block (2), its characterized in that: the electric hoist (2) is fixedly arranged in the middle of the lower end of the beam (1), and the beam (1) is supported and fixed through a support beam (7);

electric block (2) lower extreme at crossbeam (1) middle part is fixed with anti-falling device (4) through connecting rod (3), and the inboard of anti-falling device (4) is horizontal rotatable to be fixed with rotary drum (5), and steel cable (6) that electric block (2) lower extreme is connected encircle to be fixed in rotary drum (5) outer lane, be fixed with ratchet tooth (8) on anti-falling device (4) on rotary drum (5) right side, and ratchet tooth (8) are connected with rotary drum (5) transmission, are fixed with stopper (9) through pivot (11) on anti-falling device (4) of ratchet tooth (8) upper end, and stopper (9) card is between the rodent of ratchet tooth (8), be fixed with electro-magnet (12) on anti-falling device (4) of stopper (9) upper end.

2. The anti-falling protection device for the electric hoist of the crane as claimed in claim 1, wherein: the upper end of stopper (9) is fixed with iron sheet (10), and iron sheet (10) are fixed at the upper end surface of stopper (9) through the welded mode.

3. The anti-falling protection device for the electric hoist of the crane as claimed in claim 1, wherein: the surface of the rotary drum (5) is provided with rope grooves (13) in a surrounding mode, and the steel rope (6) is arranged in the rope grooves (13) in the surface of the rotary drum (5) in a surrounding mode.

4. The anti-falling protection device for the electric hoist of the crane as claimed in claim 1, wherein: the connecting rod (3) is connected to the lower end of the cross beam (1) in a welding mode, and the anti-falling device (4) is fixed to the bottom of the connecting rod (3) in a welding mode.

5. The anti-falling protection device for the electric hoist of the crane as claimed in claim 1, wherein: the electric hoist (2) is electrically connected with external control equipment, and the electromagnet (12) is electrically connected with the control equipment of the electric hoist (2).