CN203321518U

CN203321518U - Mining heading machine cutting assembly

Info

Publication number: CN203321518U
Application number: CN2013204081189U
Authority: CN
Inventors: 闫朝辉; 张安宁; 秦秀秀; 卞全林; 颜松; 张大伟
Original assignee: Anhui University of Science and Technology
Current assignee: Anhui University of Science and Technology
Priority date: 2013-07-10
Filing date: 2013-07-10
Publication date: 2013-12-04
Anticipated expiration: 2023-07-10

Abstract

The utility model discloses a mining heading machine cutting assembly. The mining heading machine cutting assembly comprises a cutting tooth, a thrust bearing, a cutting tooth base, a fixing pin, an opening pin and a cutting head, wherein the cutting tooth are installed on the cutting tooth base which is welded to the cutting head, and the cutting tooth and the cutting tooth base are respectively connected with the thrust bearing which is used for bearing the pushing force of the cutting tooth and reducing the friction between the cutting tooth and the cutting tooth base. The fixing pin is installed in a pin hole in the tail end of the cutting tooth and is used for preventing the cutting tooth from disengaging and for limiting the axial movement of the cutting tooth. The opening pin is installed in a pin hole in the tail end of the fixing pin, and is used for preventing the fixing pin from disengaging. Compared with a traditional cutting assembly, the mining heading machine cutting assembly has the advantages that under the condition that the pressure borne by the cutting tooth in the process of cutting coal and rock is not changed, the friction is reduced through the thrust bearing so that the cutting tooth can smoothly rotate in the process of cutting, the abrasion of the head of the cutting tooth is reduced, and the service life of the cutting tooth is prolonged.

Description

A kind of mining tunneling machine cutting assembly

Technical field

The utility model relates to a kind of mining machinery field, is exactly specifically a kind of mining tunneling machine cutting assembly.

Background technology

Along with improving constantly of coal mining up-to-dateness, the application of coal mine development machine tool under coal mine is more and more extensive.Tradition tunneling machine cutting assembly adopts pick to be directly installed on pick box usually, and in tunneling process, pick can reach self-grinding action by rotation in pick box.After the pick wearing and tearing acquire a certain degree, only need to change pick and get final product.But in actual application, because pick directly contacts with pick box, when tunneling machine cutting coal seam or lithosphere, pick is subject to very large cut load and can't rotation in pick box, finally make cutter cross quick-wearing and scrap, affect the application life of boring machine cutter, when making cost increase, increase the number of times of changing pick, reduced the productive temp of coal mining enterprise.Therefore, the tunneling machine cutting assembly is carried out to innovative design, improve pick and there is very positive meaning application life.

Summary of the invention

The purpose of this utility model is a kind of mining tunneling machine cutting assembly of design, this assembly can realize pick in the situation that be under pressure constant in cut coal, rock process, by thrust bearing, reduce friction, make pick rotation smoothly in cutting course, alleviate the wearing and tearing of pick head, improved the application life of pick.In order to address the above problem, the technical solution adopted in the utility model is:

A kind of mining tunneling machine cutting assembly, comprise cutterhead, pick box, pick, thrust bearing, steady pin, cottor pin.Pick box is connected with cutterhead by welding manner; Be processed with the installing hole coordinated with thrust bearing on pick box, a race ring of thrust bearing is arranged on pick; Another race ring of thrust bearing is connected with pick box; Pick is arranged in pick box; Steady pin is arranged in pick end pin-and-hole; Cottor pin is arranged in steady pin end pin-and-hole.Thrust bearing is used for bearing the cut load of rock break-off process, and effectively reduces the suffered frictional force of pick rotation in pick box; Steady pin is for preventing that pick from coming off and axial float at rock break-off process, and cottor pin is for preventing that steady pin from coming off.

The accompanying drawing explanation

Accompanying drawing 1 implements for the utility model the cut modular construction schematic diagram provided;

Accompanying drawing 2 implements to provide steady pin and cottor pin scheme of installation for the utility model.

In accompanying drawing 1: 1. pick; 2. thrust bearing; 3. pick box; 4. steady pin; 5. cottor pin; 6. cutterhead;

In accompanying drawing 2: 4. steady pin; 5. cottor pin.

The specific embodiment

For innovative characteristics, enforcement means, the principle of work and power that the utility model is realized with reach purpose and be easier to understand, below in conjunction with specific embodiment and diagram, the utility model is further elaborated:

As shown in Figure 1, a kind of mining tunneling machine cutting assembly, comprise pick (1), thrust bearing (2), pick box (3), steady pin (4), cottor pin (5), cutterhead (6); Described pick box (3) is connected with cutterhead (6) by welding manner; Be processed with the installing hole matched with thrust bearing (2) on described pick box (3); A race ring of described thrust bearing (2) is arranged on pick (1); Another race ring of described thrust bearing (2) is arranged in pick box (2).

Described pick (1) is arranged in pick box (3), and the cut load in cutting course is born by thrust bearing (2); Described steady pin (4) is arranged in pick (1) end pin-and-hole, and steady pin (4) is for limiting pick (1) in the position of pick box, prevents its coming off and axial float in the course of the work; Described cottor pin (5) is arranged in steady pin (4) end pin-and-hole, and cottor pin (5), for limiting the position of steady pin (4), prevents from coming off.

A kind of mining tunneling machine cutting assembly, its innovative characteristics is by installed thrust bearing between pick and pick box, with traditional cut assembly, compare, when pick in the situation that be under pressure constant in cut coal, rock process, by thrust bearing, reduce friction, make pick rotation smoothly in cutting course, the wearing and tearing that alleviated the pick head, the application life of improving pick.Reduce the cost of charp tool of enterprise, improve productive temp, there is certain using value.

Above demonstration and described basic principle of the present utility model and principal character.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and manual, describes just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1. a mining tunneling machine cutting assembly, is characterized in that, comprises pick (1), thrust bearing (2), pick box (3), steady pin (4), cottor pin (5), cutterhead (6); Pick (1) is installed on pick box (3), pick box (3) is welded on cutterhead (6), steady pin (4) is installed in pick (1) end pin-and-hole, and cottor pin (5) is installed in steady pin (4) end pin-and-hole.

2. a kind of mining tunneling machine cutting assembly according to claim 1, it is characterized in that, also comprise that thrust bearing (2) is connected with pick box (3) with pick (1) respectively, for bear pick (1) thrust and reduce pick (1) and pick box (2) between frictional force, the application life that can improve pick.