SU490934A1 - Dredge scoop - Google Patents

Description

one

This invention relates to a drag construction.

Known scoops are ycTpoikTrsa dragons containing a scoop chain, scoops, Yorkshny and bottom drums, and a device for tensioning the scoop value, made in the form of a counterweight on the brackets.

The disadvantage of such devices is the frequent descent of the scoop price from the drums during operation, which leads to simple dredging and accidents. The frequent descent of the scoop chain, which weakens during operation due to iosos, is explained by the absence of its tension in known automation devices. wives

The purpose of the invention is to increase the efficiency of the tension of a scoop bag and to prevent it from going off the drums.

For this, in the proposed device, the lower drum is made freely rotating on the discs and is equipped with a planetary gear with eccentrics fixed for rotation in the supports of the lower end of the scoop frame.

FIG. 1 shows the proposed device; in fig. 2 - the lower drum section; in fig. 3 is a schematic of the position of the tandem drum under tension of the scoop chain.

The device includes a scoop frame 1 with a top 2 and bottom 3 reels that encompasses a scoop chain consisting of a row of scoops 4 connected between

2

by itself, in the supports 5 of the lower end of the scoop frame 1, eccentrics 6 are fitted with the possibility of rotation, fitted with bushings 7; In eccentrics 6, the axis 8 of the lower one is installed

drum 3. On the sides of the eccentrics 6 are mounted on the axis 8 of the lid 9, the lower drum 3 is made to freely rotate on the disks 10 installed through the anti-friction sleeves 11 on the sleeves 7 of the eccentrics 6,

The discs 10 can be freely rotated on the sleeves 7, on which the side caps 12 are also attached. The eccentrics 6 are connected to the discs 10 with a HOMOHUi planetary gear containing gears 13-16, Gears 13 and 14 are connected together and set loosely on i7 fingers, pr1n rsnennyh to dnskam 10. The gears 15 are rigidly fixed on the smallpox 8, and the gears 16 are rigidly fixed on the sleeves 7 eccentrics 6. Exceitriques 6 are fixed in the supports 5 through antifriction sleeves 18, and the lower drum 3 is mounted on the disks 10 through the anti-friction sleeves 19, On the image The end switch 20 is installed at the end of the black frame,

and 8 is hingedly connected by a leash 21 with a scoop frame 1,

The device works as follows. Prn vranenii bottom drum 3 sgkpa friction slip turns deyki 10.

When this gear wheels 14 run around the wheels

J5 and turn the wheels 13, which are coupled to the wheels 16. The wheels 16 turn through the bushings 7 of the eccentrics 6. When the eccentrics 6 are rotated, the axis 8 of the lower drum 3 and, consequently, the entire drum 3 moves forward, pulling the scoop chain.

When the eccentrics 6 reach the extreme positions, the axis 8 comes into contact with the limit switch 20, which signals the service personnel to dredge the need for cutting the trap chain, after which the eccentrics 6 are set to their original position.

Subject invention

Dredge drawing device including scoop frame, scoop chain, upper

and the lower drums, characterized in that, in order to increase the efficiency of tensioning the scoop chain and prevent it from coming off the drums, the lower drum is made freely rotating on the disks and provided

planetary irregularities with eccentrics, reinforced with the possibility of rotation in the supports of the lower end of the scoop frame.

J

 J

// S.

J

Fig.z