SU781267A1

SU781267A1 - Working member of multibucket excavator

Info

Publication number: SU781267A1
Application number: SU772478716A
Authority: SU
Inventors: Леонид Андреевич Хмара; Анатолий Михайлович Варшавский; Владилен Иванович Баловнев; Юлий Нехемович Дунаевский
Original assignee: Днепропетровский инженерно-строительный институт
Priority date: 1977-04-25
Filing date: 1977-04-25
Publication date: 1980-11-23

Description

Изобретение относитс к землеройным машинам непрерывного действи , а именно к рабочим органам цепных многоковшовых экскаваторов.The invention relates to continuous earth-moving machines, namely to the working bodies of chain bucket excavators.

Известен рабочий орган многоковшового экскаватора, включаюгций цепь с ковшами и привсЛ цепи 1 j.A working body of a multi-bucket excavator is known, including a chain with buckets and an attachment of chain 1 j.

Недостатком данной конструкции вл етс ее низка производительность.The disadvantage of this design is its low productivity.

Цель изобретени - повышение производительности разработки грунта за счет увеличени емкости ковша и улучшени условий разгрузки грунта из него.The purpose of the invention is to increase the productivity of soil development by increasing the bucket capacity and improving the conditions for unloading soil from it.

Указанна цель достигаетс тем, что в рабочем органе многоковшового экскаватора, включающем цепь с ковшами и привод цепи, каждый ковш выполнен разрезным двухсекционным , причем секци : закреплены на последовательных звень х цепи, а передн часть задней (по ходу цепи) секции примыкает с внутренней стороны к задней части передней секции ковша. Кроме того, в днише ковша между секци ми В1 толнен зазор, при этом задн секци имеет режущую кромку по всей ширинг ковпга, а режуша кромка передней секции ипеет длину, меньглую ширины ковша.This goal is achieved by the fact that in the working body of a multi-bucket excavator, including a chain with buckets and a chain drive, each bucket is made split into two sections, with the section: fixed on consecutive chain links, and the front part of the rear (along the chain) section is adjacent on the inside to the back of the front bucket section. In addition, in the bottom of the bucket between the sections B1 there is a gap, while the rear section has a cutting edge across the entire width of the cowgill, while cutting the edge of the front section has a length that is less than the width of the bucket.

На фиг. I изображен рабочий орган многоковшового экскаватора, продольный разрез; на фиг. 2 - вид А на фиг. 1; на фиг. 3 - схема стружек, вырезаемых передней и задней режущими кромками ковша.FIG. I shows the working body of a multi-bucket excavator, longitudinal section; in fig. 2 is a view A of FIG. one; in fig. 3 is a diagram of shavings cut by the front and rear cutting edges of the bucket.

J Рабочий орган многоковшового экскаватора вк.аючает цепь 1 с ковшами. Каждый ковш состоит из передней 2 и задней 3 секций, которые имеют боковые стенки, днище 4 передней секции, днише 5 задней секции , переднюю режушую кромку 6 и заднююJ The working body of a multi-bucket excavator connects chain 1 with buckets. Each bucket consists of the front 2 and rear 3 sections, which have side walls, the bottom 4 of the front section, the bottom 5 of the rear section, the front cutting edge 6 and the rear

10 режущую кромку 7. Секции 2 и 3 креп тс к последовательным звень м цепи, привод которой осушествл етс барабаном 8. Секци 3 имеет заДнюю стенку 9 и примыкает с внутренней стороны к передней секции 2, при этом между секци ми 2 и 3 в днище10 cutting edge 7. Sections 2 and 3 are attached to successive chain links, driven by a drum 8. Section 3 has a back wall 9 and is adjacent on the inside to front section 2, while between sections 2 and 3 in the bottom

предусмотрен зазор в виде пр моугольной щели 10 дл прохода грунта. Передн режуща кромка 6 имеет длину, меньщую ширины ковша, а задн режуща кромка 7 вьшолнена по всей ширине ковша. a gap is provided in the form of a rectangular slit 10 for ground penetration. The front cutting edge 6 has a length shorter than the width of the bucket, and the rear cutting edge 7 is full across the entire width of the bucket.

20 Работает рабочий орган многоковшового , экскаватора следующим образом.20 Works working body bucket, excavator as follows.

При движении рабочей ветви цепи 1When moving the working branch of the chain 1

Claims

upwardly, the front cutting edge 6 and then the rear cutting edge 7 of the bucket cut into the ground. Next is the simultaneous cutting of chips front and rear cutting edges. However, the shapes of the chips cut out by them are different, the front edge cuts narrow chips according to shape I (see Fig. 3) and the back edge - according to shape II. This ensures that the elongated buckets are simultaneously filled with soil. In addition, digging with buckets with an additional slit loading reduces the digging resistance due to the fact that the friction of the soil on the side walls of the bucket is reduced: the soil cut by the edge 6 goes sideways, and the edge 7 falls back to the inside. The excavator buckets are unloaded when they approach the drive drum .8. Here, the bucket sections are rotated relative to each other, which leads to the loosening of the slip of its soil in the bucket and facilitates its unloading. A portion of the soil from the front section is discharged through the gap between the sections, as the width of the shell increases as far as the driving drum (B) (see Fig. 2). Upon further movement of the bucket sections on the drive drum 8, the remaining soil in them is unloaded into the excavator's receiving hopper or onto the conveyor (not shown in the drawings). On the idle and working branches of the chain, the links are established by tensioning the chain coaxially, the bucket sections are closed again and the digging process is repeated. The proposed design of the working body, in addition to increasing productivity, also reduces the specific energy consumption of the digging process by replacing increase the thickness of cut chips. The conditions for unloading the sticky soil from the bucket are also improved due to its loosening and the impact on the soil of additional forces arising from the mutual rotation of the bucket sections relative to each other on the drive drum. Claim 1. Worker body of multi-bucket excavator including chain with buckets and chain drive, characterized in that, in order to increase the productivity of excavation by increasing the capacity of the bucket and improving the conditions for unloading the primer out of it, each bucket is made split in two sections, and sections mounted on consecutive links of the chain, and the front part of the rear (along the chain) section is adjacent from the inside to the rear of the front section of the bucket.

2. The body according to claim 1, characterized in that a gap is made in the bottom of the bucket between the sections, the rear section having a cutting edge across the entire width of the bucket, and the cutting edge of the front section has a length smaller than the width of the bucket. Sources of information taken into account in the examination 1. Barsov I. P. and others. Machines and mechanisms of transport construction. M., “Transport, 1968, p. 127.

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