SU1301935A1 - Scraper bucket - Google Patents

Abstract

The invention relates to the field of earthmoving machinery and can be used on variable width cutting scrapers. The goal is to increase the reliability of the bucket by increasing its rigidity. The bucket includes the bottom, side 1 and retractable rear walls. The bottom, e is made of medium 3 and side fixed 2 parts. The middle part 3 is hingedly mounted with a trailing edge at the rear of the bucket. The cutting edges 4 are fixed to the front edges of each of the parts, and the middle part 3 of the bottom has a rotational drive made in the form of rotation hydraulic motors 7 and a transverse shaft 5 with levers 6 rigidly attached to it, which are hingedly connected to fixed parts 2. Shaft 5 is mounted on the middle 3 parts by means of eyelets with holes in the form of grooves. The levers 6 are mounted on parts 2 by means of additional side shafts 11 rigidly attached to them and arranged parallel to the shaft 5. Each of them is installed by means of double-sided thrust bearings 10. Part 3 is combined with part 2 by a drive for digging the soil with a full bucket width. After combining the planes of all the knives 4, the hydraulic motors 7 are combined with the help of a slide valve. In this position, the drive provides digging with the full bucket width, and all loads are transferred to the hydraulic motors 7. To go to digging with a shelf for a reduced cutting width, the side parts 2 lift the middle part 3 to the upper position and fix it. 6 Il. i (L 00 12 73 7 "4 S 5 4 co oo joint venture 70 73 2

Description

The invention relates to earthmovers and can be used on variable width cutting scrapers.

The purpose of the invention is to increase the reliability of the bucket by increasing its rigidity.

FIG. 1 shows the drive when digging with side knives; in fig. 2 - the same, when digging with medium knives; in fig. 3 and 4 - drive kinematics; in fig. 5 and 6 - profile after digging.

The scraper bucket consists of side walls 1 connected to the side fixed parts (elements) of the 2 bottom, the middle part 3 of the bottom, and that is hinged mounted by the rear edge of the back part of the bucket, the cutter, and their knives 4 fixed on the front edges of each of the parts dansha. The middle part of the bottom 3 has a rotational drive, made of a transverse shaft 5.

ten

t5

12 and 13 on the locked hydraulic engines 7.

When transverse loads are applied to parts 2 of the bottom, they are perceived by shaft 5, which is fixed in lateral parts 2 of bottom in double-sided thrust bearings 10. Such fastening of shaft 5 increases the rigidity of the front part of the bucket, weakened by a notch for the middle part 3 of the bottom. The use of gearboxes 12 and the placement of hydraulic motors 7 in the rear part of the bottom eliminates direct contact of the drive elements with the ground, which on the one hand increases the durability of the device, and on the other eliminates additional drag resistance.

To switch to digging from full to reduced width of cutting, the side parts of 2 bottoms lift the middle part of the 3 bottoms to the upper position and fix it, locking the spool

with the control levers 2o rigidly fixed on it, the hydraulic motors 7. In this case, the medium 6 and the hydraulic motors of the rotation 7.

In the front part of the middle part of the bottom, there are ribs-lugs 8 with grooves 9, into which the transverse shaft 5 is missed. On the back side of the fixed parts 2 of the bottom two-sided thrust bearings 10 are installed, in which, in turn, additional lateral rotational drive shafts 11 are installed parts 3. The lever 6 is pivotally connected to the fixed parts (elements) 2 through shafts 1 1, k

In part 3 of the bottom, a trace is practically eliminated from digging and a trace is shown in the bottomhole shown in FIG. 6. To adjust the depth of cut in this position, the bucket lift mechanism is used.

25 To translate the blade system from full to reduced width of the cutting with the middle part of the bottom 3, proceed as follows. Simultaneously with the raising of the bucket, the drive of the blade system is switched on to lower. As a result, the knife system is 35

40

to which the levers 6 are rigidly attached. At 30, the position shown in FIG. 2 and Sv, fixed parts 2 of the bottom are also fitted with gearboxes 12, the output shafts of which are connected to the side shafts 11, and the input 13 are connected with the rotation hydraulic motors 7. Bevel, worm, screw or hypoid gears can be used as gearboxes. - A sliding rear wall 14 is provided for unloading the bucket. 14.. The bucket works as follows.

To dig the soil with the full width of the bucket, the middle part 3 of the bottom is aligned with the plane of the fixed parts 2 of the bottom by means of a drive. For this, oil is supplied to the hydraulic motors 7, which rotate the shafts AND through the shafts 6 through the shafts 13, the gears 12. As a result, the shaft 5 placed in the slot 9 of the rotatable middle part 3 of the bottom begins to vanish relative to the shafts 11 and drives the middle part 3 bottoms with knives 4. After combining the planes of all knives 4, stop the flow of oil to the hydraulic motors 7 and lock them with the spool. In this position, the drive provides digging with the full width of the bucket, and all active and reactive loads on the middle part of the bottom 3 are transmitted through levers 6, shafts II, gearboxes

45

50

and after digging in the face there is a trace shown in fig. five.

Claims (1)

Invention Formula Scraper bucket, including side and retractable rear walls, bottom, made of side fixed and middle hinged rear edge of parts with cutting knives, and rotation drive of the middle part of the bottom, made of kine.matically connected with the middle part of the bottom of the transverse shaft with rigidly fixed on it are levers that are hingedly connected to fixed elements and from a lever turning engine, characterized in that, in order to increase the reliability of the bucket, the transverse shaft of the rotational drive of the middle part of the bottom mounted on it by means of holes in the form of grooves, and the levers are mounted on fixed parts of the bottom by means of additional side shafts rigidly attached to them and arranged parallel to the transverse shaft, each of which is installed by means of double-sided support bearing plates. 0 five 12 and 13 on the locked hydraulic engines 7. When transverse loads are applied to parts 2 of the bottom, they are perceived by shaft 5, which is fixed in lateral parts 2 of bottom in double-sided thrust bearings 10. Such fastening of shaft 5 increases the rigidity of the front part of the bucket, weakened by a notch for the middle part 3 of the bottom. The use of gearboxes 12 and the placement of hydraulic motors 7 in the rear part of the bottom eliminates direct contact of the drive elements with the ground, which on the one hand increases the durability of the device, and on the other eliminates additional drag resistance. To switch to digging from full to reduced width of cutting, the side parts of 2 bottoms lift the middle part of the 3 bottoms to the upper position and fix it, locking the spool The control of the hydraulic motors 7. In this environment of the control, the hydraulic motors 7. In this case, the middle part 3 of the bottom is practically excluded from digging and a trace is shown in the bottom, shown in FIG. 6. To adjust the depth of cut in this position, the bucket lift mechanism is used. To convert the blade system from full to reduced cutting width by the middle part of the bottom 3, proceed as follows. Simultaneously with the raising of the bucket, the drive of the blade system is switched on to lower. As a result, the knife system takes the position shown in FIG. 2 and Sv, five 0 0, the position shown in FIG. 2 and Sv, five 0 and after digging in the face there is a trace shown in fig. five. Invention Formula Scraper bucket, including side and retractable rear walls, bottom, made of side fixed and middle hinged rear edge of parts with cutting knives, and rotation drive of the middle part of the bottom, made of kine.matically connected with the middle part of the bottom of the transverse shaft with rigidly fixed on it are levers that are hingedly connected to fixed elements and from a lever turning engine, characterized in that, in order to increase the reliability of the bucket, the transverse shaft of the rotational drive of the middle part of the bottom mounted on it by means of holes in the form of grooves, and the levers are mounted on fixed parts of the bottom by means of additional side shafts rigidly attached to them and arranged parallel to the transverse shaft, each of which is installed by means of double-sided support bearing plates. P J 7 ; j w  F (Ug7 (m) fb g. l M} h FIG. // ///// F fi.5 7 F FIG. 6 /