SU962609A1

SU962609A1 - Cutting bit for mining machines

Info

Publication number: SU962609A1
Application number: SU813259820A
Authority: SU
Inventors: Виктор Иванович Ефремов; Яков Андреевич Лейман; Александр Степанович Прокофьев; Анна Григорьевна Ряплова; Владимир Викторович Савицкий
Priority date: 1981-03-11
Filing date: 1981-03-11
Publication date: 1982-09-30

Description

1one

Изобретение относитс к горной промышленности , а именно к режущему инструменту исполнительных органов горных машин.The invention relates to the mining industry, namely to the cutting tool of the executive bodies of mining machines.

Известны резцы дл горных машин, включающие корпус с рабочей головкой, стопорный элемент и поворотное устройство .1.Known incisors for mining machines include a housing with a working head, a locking element and a turning device .1.

Недостаток таких резцов - сложность конструкции поворотного устройства , что снижает надежность работы резцового .инструмента.The disadvantage of such incisors is the complexity of the design of the rotator, which reduces the reliability of the incisal tool.

Наиболее близким к предлагаемому вл етс резец дл горных машин, включающий полый корпус, установленный в кулаке с возможностью поворота, рабочую головку и стопорный элемент 2.Closest to the present invention is a cutter for mining machines, comprising a hollow body that is rotatably mounted in a cam, a working head and a locking element 2.

К недостаткам таких резцов относитс мала интенсивность их поворота в процессе работы, что снижает износостойкость инструмента.The disadvantages of such cutters are the small intensity of their rotation during operation, which reduces the tool's wear resistance.

Цель изобретени - увеличение износостойкости резца путем повышени интенсивности его поворота.The purpose of the invention is to increase the wear resistance of the cutter by increasing the intensity of its rotation.

Поставленна цель достигаетс тем, что резец, включающий полый корпус, установленный в кулаке с возможностью поворота, рабочую головку и стопорный элемент, снабжен капсулой с металлическими шариками, установленной в полом корпусе и имеющей про10 дольно расположенную винтовую перегородку , раздел ющую капсулу на камеры ., одна из которых заполнена металлическими шариками. The goal is achieved by the fact that the cutter, which includes a hollow body mounted rotatably in the cam, the working head and the locking element, is provided with a capsule with metal balls mounted in the hollow body and having a longitudinal screw partition dividing the capsule into chambers. one of which is filled with metal balls.

На фиг. 1 показан предлагаемый резец, общий вид; на фиг. 2 - разрезFIG. 1 shows the proposed cutter, a general view; in fig. 2 - section

на фиг. 1; на фиг. 3 разрез . Б-Б на фиг. 2; на фиг. Ц - положение резца в процессе работы с расположением шариков в головной части; на in fig. one; in fig. 3 cut. BB in FIG. 2; in fig. C - the position of the cutter in the process of working with the location of the balls in the head; on

20 фиг. 5 то же, с расположением шариков в торцовой части.20 of FIG. 5 the same, with the location of the balls in the end part.

Claims

The cutter for mining machines includes a holder 1 with a shank 2, a hollow 39 body 3, a working head 4 with a z-alloy insert 5- A plastic or metal capsule 6 is placed in the cavity of the core box, divided along its axis fixed relative to the capsule 6 by a screw partition 7 into chambers 8 and 9, one of which (in this case, chamber 8) is filled with metal balls 10. Capsule 6 is fixed relative to housing 3 by means of a detachable (e.g. threaded) connection, which allows, if necessary, for example, when worn eztsa extract it from the body 3 and used for equipping other cutter. The cutter is pivotally mounted in the cam 11 and held from the stop by a locking element 12. During rotation of the executive body of the mining machine, the chopper alternately takes positions indicated in FIGS. 4 and 5, in which the balls 10 are located inside the capsule 6 at the end suit of the working body heads or a cutter. The movement of the balls 10 from the end of the cutter to its working head, which takes place along the screw septum 7 of the chamber B, creates a torque relative to the longitudinal axis of the cutter and thus causes it to rotate. By adjusting the ratio of the mass of the balls to the cutter itself, as well as the twist angle of the screw surface, it is possible to change the angle of rotation of the cutter around its axis. The invention makes it possible to reduce the specific consumption of the incisors by increasing the intensity of their rotation during operation. Claims for mining machines, including a hollow body mounted in a cam rotatably, a working head and a locking element, characterized in that, in order to increase the wear resistance of the blade by increasing the intensity of its rotation, it is provided with a capsule with metal balls mounted in the floor housing and having a longitudinally located screw partition dividing the capsule into chambers, one of which is filled with metal balls. Sources of information taken into account in examination 1, USSR Author's Certificate ff, cl. E 21 C 25/38, 1979.

2. The author's certificate of the USSR. № 488010, cl. E 21 C 25/38, 1973.

g

In.

L 3 6