CN104891333A

CN104891333A - Self-opening prevention device of grab bucket

Info

Publication number: CN104891333A
Application number: CN201510299954.1A
Authority: CN
Inventors: 钟兵
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-05-31
Filing date: 2015-05-31
Publication date: 2015-09-09

Abstract

The invention discloses a self-opening prevention device of a grab bucket; An opening/closing rope I, an upper pulley I, an upper pulley shaft, an upper bearing beam, a support rope, an upper pin shaft, a support rod, a connecting pin, a jaw plate, a lower bearing beam, a lower pulley shaft and a lower pulley I are connected in sequence; on the side surfaces of the upper pulley I and the lower pulley I, a rotating plate shaft, a friction rotating plate, a tension spring and a limiting pin are connected in sequence; and the lower part of the upper bearing beam, the upper part of the lower bearing beam, a limiting base, the locking pin shaft and a pressure spring are connected in sequence. When a windlass or the opening/closing rope loses efficacy, the rotating speed of the upper pulley I quickly rises; the centrifugal force of the friction rotating plate exceeds the tension of the tension spring; the friction rotating plate can rotate by surrounding the rotating plate shaft to throw out to press on the locking pin shaft; the friction rotating plate quickly brings the locking pin shaft into a narrow space at the middle part due to the friction force; the opening/closing rope and the upper pulley I are quickly locked; and the opening/closing rope and the lower pulley I are also locked, so that the relative positions of the upper bearing beam and the lower bearing beam are locked, and continuous opening of the grab bucket is prevented.

Description

Grab bucket is anti-from opening apparatus

Technical field

The present invention relates to the anti-from opening apparatus of a kind of grab bucket, specifically relate to the four rope grab buckets that a kind of handling goods uses, belong to hoisting and hanging technical field.

Background technology

In industries such as smelting iron and steel, thermal electric generation, coal coke, mining, port and piers, there is a lot of solid accumulation in stock ground, and the handling of these materials are moved and are usually controlled grab bucket by hoisting crane or door machine and realize, open if unexpected in mobile cargo process after grab bucket captures goods, safely high risks is caused to property and life, causes cataphoretic failure to work unit.Work the mischief to prevent the opening and closing fracture of rope controlling grab bucket opening and closing from causing grab bucket automatically to open at present, the opening and closing rope of grab bucket is designed to 2, wherein 1 opening and closing rope lost efficacy to grab bucket and also can not open, but when if the winch controlling opening and closing rope lost efficacy or when opening and closing rope all surprisingly ruptures, grab bucket will be opened automatically, causes safety misadventure.

Summary of the invention

The object of the invention is to overcome above-mentioned deficiency, provide a kind of grab bucket anti-from opening apparatus, its structure is simple, easy for installation, and can prevent grab bucket from automatically opening when opening and closing rope or its control mechanism lose efficacy, its structure is simple, improves operational security.

The object of the present invention is achieved like this: a kind of grab bucket is anti-from opening apparatus, support that rope is connected with deck beam, one end of strut is connected with deck beam by upper pin, the other end of strut is connected with one end of jaw by connecting pin, the other end of jaw is connected with through beam by lower bearing pin, the pulley of top sheave group is connected to the bottom of deck beam by top sheave axle, the pulley of downslide wheels is connected to the top of through beam by downslide wheel shaft, locating dowel pin is provided with in the side of pulley, flap axle, friction flap and spring, locating dowel pin and flap axle are fixedly installed on the side of pulley, friction flap and flap axle hinged, the friction flap plate axle that can rotate freely rotates, extension spring one end is connected in corresponding pulley flanks, the other end is connected with friction flap, friction flap is made to be pressed on locating dowel pin, limit base and stage clip is fixedly installed in the bottom of deck beam and the top of through beam, stage clip by locking pin axial compression on limit base.During normal work, the rotating speed of each pulley is all no more than corresponding rated speed of rotation, and the centnifugal force of each friction flap is no more than the pulling force of corresponding extension spring, and friction flap is pressed on locating dowel pin all the time, when winch or opening and closing rope lost efficacy, grab bucket just has the trend opened, namely deck beam and through beam have rapidly away from trend, the rotating speed of each pulley rises rapidly the pulling force making the centnifugal force of friction flap exceed rapidly corresponding extension spring, the friction flap plate axle that just rotates rotates and throws away the periphery of pulley, friction flap is pressed in rapidly on locking bearing pin, due to pulley driving friction flap high speed rotating, friction flap because of friction force rapidly by locking bearing pin bring into middle part small space, by opening and closing rope and pulley locked, namely the opening and closing rope going up lower sheave and be wrapped between pulley is all locked, the relative position of such deck beam and through beam is locked, grab bucket is prevented to continue to open.

Compared with prior art, the present invention has following beneficial effect:

The grab bucket of the present invention's one is anti-from opening apparatus, and its structure is simple, the basis of tradition grab bucket is changed a little to pulley and installs additional anti-from opening apparatus, just can prevent grab bucket from missing the season at winch or opening and closing rope effect and automatically open, prevent the generation of safety misadventure.

Accompanying drawing explanation

Fig. 1 is a kind of anti-structural representation from opening apparatus of grabbing bucket of the present invention.

Fig. 2 is an example schematic of the present invention's a kind of the grab bucket winding of the anti-opening and closing rope from opening apparatus and sense of motion.

Fig. 3 is that a kind of grab bucket of the present invention is prevented from opening apparatus partial duty schematic diagram in normal state.

Fig. 4 is that a kind of grab bucket of the present invention is prevented from the partial duty schematic diagram of opening apparatus when winch or opening and closing rope effect lose beginning.

Fig. 5 is that a kind of grab bucket of the present invention anti-loses back pulley and opening and closing rope by locked schematic diagram from opening apparatus at winch or opening and closing rope effect.

Fig. 6 is the A-A cutaway view in Fig. 3.

Fig. 7 is the B-B cutaway view in Fig. 4.

Fig. 8 is the C-C cutaway view in Fig. 5.

In figure:

1.1 support rope 1.2 deck beam 1.3 upper pin 1.4 strut 1.5 through beam 1.6 lower bearing pin 1.7 jaw 1.8 connecting pin

2.1 locating dowel pin 2.2 lower sheave I 2.3 wheel shaft 2.4 extension spring 2.5 flap 2.6 top sheave axle 2.7 top sheave I 2.8 limit base 2.9 that rubs that glides locks bearing pin 3.0 opening and closing rope I 3.1 stage clip 3.2 flap axle 3.3 opening and closing rope II 3.4 deck beam

4.1 pulley I 4.4 upper right pulley I 4.5 bottom right, lower sheave II 4.2 top sheave II 4.3 bottom right pulley II 4.6 upper right pulley II

Detailed description of the invention

In FIG, support that rope (1.1) is connected with deck beam (1.2), one end of strut (1.4) is connected with deck beam (1.2) by upper pin (1.3), the other end of strut (1.4) is connected with one end of jaw (1.7) by connecting pin (1.8), the other end of jaw (1.7) is connected with through beam (1.5) by lower bearing pin (1.6), the bottom of deck beam (1.2) is connected with top sheave I (2.7) by top sheave axle (2.6), the top of through beam (1.5) is connected with lower sheave I (2.2) by downslide wheel shaft (2.3), be intertwined and connected by opening and closing rope I (3.0) between top sheave I (2.7) and lower sheave I (2.2), locating dowel pin (2.1) is provided with in the side of top sheave I (2.7) and lower sheave I (2.2), flap axle (3.2), friction flap (2.5) and extension spring (2.4), wherein locating dowel pin (2.1) and flap axle (3.2) are fixedly installed on top sheave I (2.7) and lower sheave I (2.2), friction flap (2.5) is hinged with flap axle (3.2), extension spring (2.4) flap (2.5) that will rub is connected with top sheave I (2.7) and lower sheave I (2.2) respectively, the bottom of deck beam (1.2) and the top of through beam (1.5) are fixedly installed limit base (2.8) and stage clip (3.1), stage clip (3.1) will be locked bearing pin (2.9) and will be pressed on limit base (2.8).

In fig. 2, top sheave axle (2.6) is fixed on deck beam (1.2), top sheave axle (2.6) and top sheave I (2.7), top sheave II (4.2), upper right pulley I (4.4) is connected with upper right pulley II (4.6), four pulleys above freely can rotate at top sheave axle (2.6), downslide wheel shaft (2.3) is fixed on through beam (1.5), downslide wheel shaft (2.3) and lower sheave I (2.2), lower sheave II (4.1), bottom right pulley I (4.3) is connected with bottom right pulley II (4.5), four pulleys above freely can rotate at downslide wheel shaft (2.3), one end of opening and closing rope I (3.0) is fixed on through beam (1.5), then top sheave II (4.2) is wound around successively, lower sheave II (4.1), top sheave I (2.7) and lower sheave I (2.2), one end of closed rope II (3.3) is fixed on through beam (1.5), after be wound around upper right pulley II (4.6) successively, bottom right pulley II (4.5), upper right pulley I (4.4) and bottom right pulley I (4.3).Arrow in figure represents the sense of motion of opening and closing rope I (3.0) and opening and closing rope II (3.3) at grab bucket each position of opening procedure, thus determine this process top sheave II (4.2), lower sheave II (4.1), top sheave I (2.7) and lower sheave I (2.2) rotates clockwise, upper right pulley II (4.6) can be determined equally, bottom right pulley II (4.5), upper right pulley I (4.4) and bottom right pulley I (4.3) rotate counterclockwise, each pulley makes rotating speed also different because of position difference above, the pulling force of the extension spring (2.4) on each pulley also requires difference.

In Fig. 3 and Fig. 6, during normal work, top sheave I (2.7) does not exceed setting speed, the centnifugal force of friction flap (2.5) is less than extension spring (2.4) pulling force, friction flap (2.5) is still pressed on locating dowel pin (2.1), locks bearing pin (2.9) and opening and closing rope I (3.0), rubbing between flap (2.5) and top sheave I (2.7) has gap.

In Fig. 4 and Fig. 7, when winch or opening and closing rope I (3.0) lost efficacy, grab bucket just has the trend opened, namely deck beam (1.2) and through beam (1.5) have rapidly away from trend, the rotating speed of top sheave I (2.7) is made to improve rapidly and exceed setting speed, on top sheave I (2.7) the centnifugal force of friction flap (2.5) exceed rapidly the pulling force of extension spring (2.4), friction flap (2.5) the plate axle (3.2) that will rotate rotates and throws away the periphery of top sheave I (2.7), friction flap (2.5) is pressed in rapidly in locking bearing pin (2.9), because top sheave I (2.7) is with dynamic friction flap (2.5) high speed rotating, friction flap (2.5) because of friction force will lock rapidly bearing pin (2.9) bring in the middle part of small space, rapidly by locked for opening and closing rope I (3.0) and top sheave I (2.7), as shown in Figure 5 and Figure 8, in like manner opening and closing rope I (3.0) and lower sheave I (2.2) is also locked, the relative position of such deck beam (1.2) and through beam (1.5) is locked, grab bucket is prevented to continue to open.

Claims

1. a grab bucket is anti-from opening apparatus, support that rope (1.1) is connected with deck beam (1.2), one end of strut (1.4) is connected with deck beam (1.2) by upper pin (1.3), the other end of strut (1.4) is connected with one end of jaw (1.7) by connecting pin (1.8), the other end of jaw (1.7) is connected with through beam (1.5) by lower bearing pin (1.6), the bottom of deck beam (1.2) is connected with top sheave I (2.7) by top sheave axle (2.6), the top of through beam (1.5) is connected with lower sheave I (2.2) by downslide wheel shaft (2.3), be intertwined and connected by opening and closing rope I (3.0) between top sheave I (2.7) and lower sheave I (2.2), it is characterized in that: described top sheave I (2.7) and the side of lower sheave I (2.2) are provided with locating dowel pin (2.1), flap axle (3.2), friction flap (2.5) and extension spring (2.4), described locating dowel pin (2.1) and flap axle (3.2) are fixedly installed on top sheave I (2.7) and lower sheave I (2.2), described friction flap (2.5) is hinged with flap axle (3.2), described extension spring (2.4) flap (2.5) that will rub is connected with top sheave I (2.7) and lower sheave I (2.2) respectively, the bottom of described deck beam (1.2) and the top of through beam (1.5) are fixedly installed limit base (2.8) and stage clip (3.1), described stage clip (3.1) will be locked bearing pin (2.9) and will be pressed on limit base (2.8).