CN214944222U

CN214944222U - Differential drum shearer capable of passing through fault

Info

Publication number: CN214944222U
Application number: CN202121322473.5U
Authority: CN
Inventors: 王建恩; 常聚才; 殷志强; 张华磊; 陈潇; 李传明; 史文豹; 陈治宇
Original assignee: Anhui University of Science and Technology
Current assignee: Anhui University of Science and Technology
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2021-11-30
Anticipated expiration: 2031-06-11

Abstract

The utility model discloses a differential drum shearer capable of passing through a fault, belonging to the field of mine coal mining machinery; a differential drum shearer capable of passing through a fault comprises a large cutting drum, a small cutting drum and cutting teeth; the large cutting drum and the small cutting drum are respectively arranged at the two ends of the coal mining machine, so that high-efficiency cutting of coal and fault rock is realized in a subsection manner, and the efficiency of the coal mining machine for cutting the fault rock is improved; the cutting teeth are fixed on the small cutting drum through the pins, so that the cutting teeth can be conveniently replaced and installed at the later stage; when the small cutting drum cuts rocks, the large cutting drum keeps rotating all the time and is in a bottom-falling state, and the rocks cut by the small cutting drum are crushed, so that the rocks are sufficiently crushed and are conveniently conveyed out through a scraper conveyer; thereby accelerating mining efficiency.

Description

Differential drum shearer capable of passing through fault

Technical Field

The disclosure belongs to the field of mine coal mining machinery, and particularly relates to a differential drum shearer capable of passing through a fault.

Background

With the continuous development of the current science and technology, coal is used as a main energy source in the current stage of China, the main status of the coal in the social development is still unchanged for a long time, and the coal seam with better geological conditions is gradually exhausted along with the continuous exploitation and consumption of coal resources. And the resources of coal beds containing complex geological structures such as faults are abundant. In order to meet the coal mining requirements, the coal mining technology is also continuously adapted to complex geological conditions. In complex geological conditions, faults are important factors affecting the mining efficiency. In the past, for mining of coal seams containing different faults, in order to smoothly cross the fault, fault rocks are usually crushed by rock crushing modes such as blasting and the like when the fault is crossed, the rock crushing mode is usually low in efficiency when the rock is crushed, and coal mining workers are idle. In addition, the shorter and safer the coal mining machinery and personnel stay near the fault. In order to safely and quickly cross a fault, it is necessary to design a coal mining machine capable of quickly cutting rocks and continuously operating.

The existing coal mining machine only aims at coal seam mining, has higher cutting efficiency on coal, and cannot continuously operate once encountering fault rocks, so that the production efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art, this disclosed aim at provides a difference drum shearer that can cross the fault, has solved among the prior art coal-winning machine and is cutting the problem of inefficiency to the fault rock.

The purpose of the disclosure can be realized by the following technical scheme:

a difference drum shearer capable of passing through a fault is characterized by comprising a small cutting drum, a first rotating arm, a first rotating oil cylinder, a walking part, a second rotating oil cylinder, a second rotating arm and a large cutting drum;

furthermore, the small cutting drum is a circular truncated cone-shaped drum with a first helical blade, is arranged at the free end of the first rotating arm and is driven to rotate by a driving device in the first rotating arm; a first rotating oil cylinder for driving the first rotating arm to rotate is arranged on the walking part;

furthermore, the big cutting drum is a cylindrical drum with a second helical blade, the big cutting drum is arranged on the second rotating arm, the big cutting drum is driven to rotate by a driving device in the second rotating arm, and the walking part is provided with a second rotating oil cylinder for driving the second rotating arm to rotate.

Further, the maximum diameter of the small cutting drum is less than or equal to one half of the diameter of the large cutting drum.

Furthermore, equidistant cutting teeth are arranged on the first rotating blade of the small cutting drum, and the cutting teeth are formed by welding a spike tooth mounting block and spike teeth.

Furthermore, the first rotating blade is provided with a plurality of square mounting grooves, the spike tooth mounting block is provided with a pin hole, the square mounting groove is provided with a positioning hole corresponding to the pin hole, and the first rotating blade and the cutting tooth are mounted in a matched mode and fixed through a pin.

Furthermore, when the small cutting drum cuts rocks, the large cutting drum always keeps rotating and is in a bottom-lying state, and the rocks cut by the small cutting drum are crushed

The beneficial effect of this disclosure: the large cutting drum and the small cutting drum are respectively arranged at the two ends of the coal mining machine, so that high-efficiency cutting of coal and fault rock can be realized in a subsection manner, the large cutting drum has high cutting capacity on a coal bed, and the small cutting drum can cut rock strata, so that the coal mining machine can realize continuous cutting on fault zones, rock breaking by blasting is not needed, and the production efficiency is greatly increased; the cutting teeth are fixed on the small cutting drum through the pins, so that the cutting teeth can be conveniently replaced and installed at the later stage; when the small cutting drum cuts rocks, the large cutting drum keeps rotating all the time and is in a bottom-falling state, and the rocks cut by the small cutting drum are crushed, so that the rocks are sufficiently crushed and are conveniently conveyed out through a scraper conveyer; thereby accelerating mining efficiency; a working method of a fault-passing differential shearer comprises the following steps: selecting a cutting drum, operating the first rotating arm and operating the large cutting drum.

Drawings

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic overall structure diagram of an embodiment of the present disclosure;

FIG. 2 is a schematic view of another perspective of the overall structure of an embodiment of the present disclosure;

FIG. 3 is a schematic view of a cutter tooth configuration of an embodiment of the present disclosure;

fig. 4 is a schematic view of a coal rock cut of an embodiment of the disclosure.

Detailed Description

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

As shown in fig. 1-4, a cross-fault differential shearer includes: the cutting machine comprises a small cutting drum 1, a first rotating arm 2, a first rotating oil cylinder 3, a walking part 4, a second rotating oil cylinder 5, a second rotating arm 6 and a large cutting drum 7;

the small cutting drum 1 is a round table-shaped drum with 8 first helical blades 10, the drum is arranged at the free end of the first rotating arm 2, and the small cutting drum 1 is rotated through a driving device in the first rotating arm 2 so as to generate a cutting effect on coal rocks; meanwhile, the first rotating oil cylinder 3 on the walking part 4 can enable the first rotating arm 2 to drive the small cutting drum 1 to do pivoting motion around the walking part, and drive the small cutting drum 1 to move up and down.

The big cutting drum 7 is a cylindrical drum with 4 second helical blades 8, is arranged on the second rotating arm 6, and drives the big cutting drum 7 to rotate through a driving device in the second rotating arm 6 so as to generate a rotary cutting effect, and the second rotating oil cylinder 5 on the walking part 4 enables the second rotating arm 6 to do pivoting motion around the walking part so as to drive the big cutting drum 7 to move up and down.

The first rotating blade 10 of the small cutting drum 1 is provided with equidistant cutting teeth 18, and because rocks consume the cutting teeth 18, in order to facilitate replacement, the cutting teeth 18 are formed by welding a spike tooth mounting block 19 and spike teeth 12, the spike tooth mounting block 19 is provided with a pin hole 13, the first rotating blade 10 is provided with a plurality of square mounting grooves, positioning holes corresponding to the pin holes 13 are formed in the square mounting grooves, and the first rotating blade 10 and the cutting teeth 18 are installed in a matched manner and fixed through pins; in addition, the second rotary blades 8 of the large cutting drum 7 are likewise provided with detachable cutting teeth 18.

In order to ensure that the small cutting drum 1 has stronger rock breaking capacity, the diameter of the small cutting drum 1 is less than or equal to one half of that of the large cutting drum 7; the firmness of the rock is greater than that of the coal, when the coal mining machine carries out rock breaking operation, the cutting resistance borne by the small cutting drum 1 is large, and if the diameter of the small cutting drum 1 is increased, the moment borne by the rotating arm of the coal mining machine is larger, the stability of the coal mining machine is not facilitated; the diameter of the roller is reduced, the number of cutting teeth of the roller is small, the cutting teeth 18 are less damaged and abraded during rock breaking work, the overhaul and replacement work can be reduced, and the efficiency of the coal mining machine is improved; in addition, the power of the coal mining machine is fixed, and the power loss of the small cutting roller 1 is small when the diameter is small, so that the capability of the roller for breaking rocks is high; referring to relevant documents and field practices, when a coal mining machine passes through a fault of a complex geological condition, the cutting speed and the traction speed are reduced, so that the roller has a large rock cutting capacity and a large amount of coal dust is inhibited from rushing out, according to a calculation formula in the design specification of the coal mining machine, the rotating speed n of the roller shown as a formula (1) is constant, and the cutting speed V is reduced by reducing the diameter D of the roller. The diameter of the small cutting drum 1 should be chosen to be less than or equal to half of the diameter of the large cutting drum 7, depending on the actual production on site.

In the formula: v, the cutting speed of the drum; d, the diameter of the roller; n-the rotational speed of the drum.

A working method of a fault-passing differential shearer comprises the following steps:

s1: selecting a cutting drum: when the coal cutter is cutting coal, the large cutting drum 7 is in front of the small cutting drum 1; when the fault rock 16 is cut, the small cutting drum 1 is in front, and the large cutting drum 7 is behind, and is pushed forwards;

s2: operating the first rotating arm: the small cutting drum 1 moves up and down along with the first rotating arm 2 under the action of the first rotating oil cylinder 3, and cuts off rocks 16 of the whole section between the top plate 15 and the bottom plate 17 at one time;

s3: control of the large cutting drum 7: the large cutting drum 7 does not undertake the task of cutting rock, and when the small cutting drum 1 cuts rock, the large cutting drum 7 is always kept rotating and in a bottom-lying state, and the rock cut by the small cutting drum is crushed and transported to a scraper conveyor.

The working principle is as follows:

the large cutting drum 7 and the small cutting drum 1 are respectively arranged at the two ends of the coal mining machine, so that high-efficiency cutting of coal and fault rock is realized in a subsection mode, the large cutting drum 7 has high cutting capacity on a coal bed, and the small cutting drum 1 can cut rock layers, so that the coal mining machine can continuously cut fault zones, rock breaking is not required to be blasted, and the production efficiency is greatly increased; the cutting teeth 18 are fixed on the small cutting drum 1 through pins, so that the cutting teeth 18 can be conveniently replaced and installed at the later stage; when the small cutting drum 1 cuts rocks, the large cutting drum 7 always keeps rotating and is in a bottom-falling state, and the rocks cut by the small cutting drum 1 are crushed, so that the rocks are sufficiently crushed and are conveniently conveyed out through a scraper conveyer; thereby accelerating mining efficiency.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.

Claims

1. The difference drum shearer capable of passing through the fault is characterized by comprising a small cutting drum (1), a first rotating arm (2), a first rotating oil cylinder (3), a walking part (4), a second rotating oil cylinder (5), a second rotating arm (6) and a large cutting drum (7);

the small cutting drum (1) is a round table-shaped drum with 8 first helical blades (10), is arranged at the free end of the first rotating arm (2), and is driven to rotate by a driving device in the first rotating arm (2); a first rotating oil cylinder (3) for driving the first rotating arm (2) to rotate is arranged on the traveling part (4);

the large cutting drum (7) is a cylindrical drum with 4 second helical blades (8), the large cutting drum (7) is installed on a second rotating arm (6), the large cutting drum (7) is driven to rotate through a driving device in the second rotating arm (6), and a second rotating oil cylinder (5) used for driving the second rotating arm (6) to rotate is installed on the walking part (4).

2. A cross-fault differential shearer according to claim 1, wherein the diameter of the small cutting drums (1) is less than or equal to half the diameter of the large cutting drums (7).

3. A differential shearer loader capable of passing through a fault according to claim 1, characterized in that the first helical blade (10) of the small cutting drum (1) is provided with equidistant cutting teeth (18), and the cutting teeth (18) are welded by a spike tooth mounting block (19) and spike teeth (12).

4. The differential shearer loader capable of passing through fault according to claim 3, wherein the first helical blade (10) has a plurality of square mounting grooves, the tooth mounting block (19) has a pin hole (13), the square mounting grooves have positioning holes corresponding to the pin hole (13), and the first helical blade (10) and the cutting tooth (18) are installed in a matching manner and fixed by a pin.