SU740908A1 - Scraper scoop - Google Patents

Description

(54) KGZHSH SCRAPER

I

The design refers to earth-moving machines used in construction, in particular to scrappers with a small capacity of buckets.

The scraper bucket is known with a double-track loading system, in which the cutting edges are located at different levels & R..

The closest technical solution to the (invention of the invention is a scraper bucket with a double-track loading system, including daishes from the rear and the front, made over a much smaller width of the bucket, cutting edges. The rear cutting edges work under conditions of semi-block cutting of the soil and cutting two side edges profile of chips, removed in the form of a reserve by the front cutting edge. Such a scraper bucket provides better cutting of the stepped cutting edge into the ground while maintaining the scraper's planning capacity, reducing the cycle time, it is possible to develop more durable U – W categories, reducing the soil digging force and at the same time determine the sweep ratio.

The disadvantage of this bucket is the layering of its tooling. This scraper bucket is most advisable to use one on long-sized machines with large tanks.

The purpose of the invention is to control the bucket manufacture.

to

The goal is achieved by the fact that the front cutting edge is positioned by the trajectory of movement of the lower edge of the backplate and is attached to the side walls by means of rigid cross-links.

Claims (4)

ts In this case, the front cutting edge is fixed to the rear cutting edge by means of rigid longitudinal shears. In addition, the cross-links are guided with respect to the leading cutting edge under the direction of scrap, side, back and up. The difference between the bucket is also the location of the leading cutting edge relative to the rear. FIG. 1 shows the proposed scraper bucket in the transport position; in fig. 2 - the same in the working position; in fig. 3 is a view along arrow A in FIG. 1 (on the front and rear cutting edges). The scraper bucket includes side walls 1, rear wall 2, side cutting knives 3, flap 4, bottom 5. The scraper bucket also contains a metal structure 6 and chassis 7. The bucket is mounted on a longitudinal inclined plate 8. The flap 4 is opened by a hydraulic cylinder 9 . For lowering the & sha mounted hydrocyleschine 10. To the bottom 5 in the front part of his mount; c, the rear cutting edge 11, to which the longitudinal beams 12 are attached, is continuous across the entire bucket; In turn, the beams 12 are fixed on the back side of the stepped leading cutting edge 13. The front cutting edge 13 is mounted on two beams 14, divorced under the angle side, back and up and attached from the inside to the side walls 1 of the bucket. The longitudinal beams of the 12-step front cutting edge 13 are attached to the edge 11 with respect to the bottom 5 at an angle of fb-18 ° -airC5-4n where U is the distance from the lower edge of the rear cutting edge to the rear wall; distance from the bottom of the bucket to the ground surface; the maximum (passsna) is the volume of the extruded chips. The ratio of the parameters is obtained from the condition of ensuring the maximum cutting of soil chips in the conditions of realizing the power of the installed engine of the base unit, for which the lower edges of the cutting edges should be at the same level. Bucket scraper works as follows. When lowering 10 cutting edges 11 and 13 with the help of a hydraulic cylinder, they are driven into the soil mass. The front flap 4 is kept by the hydrodiline 9 at the same time in the upper lifting position. Then, when the entire bucket moves, with its maximum being lowered to the maximum chip thickness, the front cutting edge 13 cuts a narrow strip of soil, and the rear edge 11 cuts the remaining rear edge along the sides. In this case, the bucket is simultaneously filled with primer. A feature of the bucket is that the narrow front cutting edge mounted on the longitudinal beams accommodates the movement of the lower edge of the flap 4. After filling the bucket, the flap 4 descends and adjoins the cutting edge 11. The cutting edge 13 together with the longitudinal beams 12 falls inside the tank scraper ,, which excludes spillage between. cattle boards 4 and 11 and 13. Then, using a hyperschelin / ra 10, the bucket is raised to the Tpffficq position. Soil from the bucket was unloaded by extending the rear wall 2. The valve 4 should be lifted at the same time). The soil is discharged into the slot between the front narrow cutting edge 13 and the rear solid edge 11. The scraper bucket differs from The simplicity and ease of practical implementation of it when implementing into a national household is simple. Such a bucket is especially effective for scrappers of small capacity, for example, 3, 4 m. In these buckets of the trans-type type, the bottom length is small and therefore it is advisable to load it by means of. additionally installed & stepped step edge of the cutting edge, which does not require significant changes to the traditional bucket design. The consumption of materials at the same time significantly reduces the TC. Claim 1. Bucket scraper, including box 1e and rear wall, bottom with rear cutting edge, front flap and front cutting edge, performed along the length of the smaller bucket width, so that, in order to simplify the bucket manufacturing technology The front cutting edge is positioned inside the path of movement of the lower edge of the flap and attached to the boom walls by means of rigid cross-links. 2. Kovsh according to claim 1, that is, so that the front cutting edge; it is attached to the rear cutting edge by means of a psycho longitudinal link. 3. Kovsh on PP. 1 and 2, different from the fact that the cross links are directed towards the front cutting edge at an angle to the sides, back and up. 4. Bucket on shy 1-3, about tl and h and and and the fact that the lower edge in front of her cutting edge is located in ppookosti, held through the lower edge of the rear cutting edge and directed relative to the bottom at an angle jb-ieo -arcsin L is the distance from the lower edge of the cutting edge to the rear wall; i - distance from bottom to day ground surface; - The maximum thickness of the cut. my shavings. SOURCE of information given into consideration 1.Baloviev V. I and others. Tendencies of development and development in the evaluation of new, constructive solutions for construction and road machines. M .. TsNIITEstroymash. 1973, p. 72-73, races. 22 2. USSR author's certificate Afe 2147932, cl. E 02 F 3/64, 1975 (prototype). I am% 55% 5 YOYKY§ $ $ “TH ff U2.t