Mechanical continuous mining device integrating microwaves and cutter heads, and use method

Patent metadata

Field	Value
Publication number	US-12460544-B2
Application number	US-202318259760-A
Country	US
Kind code	B2
Filing date	May 18, 2023
Priority date	May 17, 2023
Publication date	Nov 4, 2025
Grant date	Nov 4, 2025

Abstract

A mechanical ore sample testing device integrating microwaves and cutter heads, and a use method are provided. The mechanical ore sample testing device comprises an equipment platform, a cutter head cutting system, a microwave fracturing system, a loading device and a cantilever crane. The microwave fracturing system and the cutter head cutting system are fixed to the equipment platform, and the loading device and the cantilever crane are mounted at a front end of the equipment platform. A microwave mechanical longwall mining method for a metallic ore is provided. Microwaves move in sync with machines to break a rock, microwave fracturing methods comprise high-power microwave integral fracturing and local rapid fracturing of soft microwave coaxial lines in the cutter heads; and a lateral cutting method of an ore body by a cutter head technology is applied, a mechanical rock breaking principle is changed from previous extrusion breaking to tension breaking.

First claim

What is claimed is:

1 . A mechanical ore sample testing device integrating microwaves and cutter heads, comprising:
an equipment platform; a cutter head cutting system; a microwave fracturing system; a loading device; and a cantilever crane, wherein the microwave fracturing system and the cutter head cutting system are fixed to the equipment platform, and the loading device and the cantilever crane are mounted at a front end of the equipment platform, wherein the microwave fracturing system comprises a high-power microwave generator and a low-power microwave generator, wherein the high-power microwave generator is mounted on a microwave platform by sliding rails, wherein moving drives are symmetrically arranged along the high-power microwave generator, one end of each moving drive is fixed to the microwave platform by a support block, and another end of each moving drive is hinged with a side wall of the high-power microwave generator, wherein the microwave platform is connected with a horizontal moving platform by vertical support beams and diagonal support beams, and wherein an output port of the high-power microwave generator is sequentially connected with an automatic impedance regulator, a rectangular waveguide and a horn microwave antenna, and an infrared temperature sensor and a laser range finder are arranged at a port of the horn microwave antenna; and wherein the low-power microwave generator is fixed to a top of a case.

2 . The device of claim 1 , wherein the equipment platform comprises a base, equipment moving guide rails and the horizontal moving platform, wherein the base is fixed to a ground, and the equipment moving guide rails are fixedly mounted on an upper surface of the base; wherein a bottom of the horizontal moving platform is connected with the equipment moving guide rails in a sliding manner, and horizontal moving drives are symmetrically arranged along the horizontal moving platform; and wherein one end of each horizontal moving drive is fixed to the base by a support block, and another end of each horizontal moving drive is hinged with a side wall of the horizontal moving platform.

3 . The device of claim 1 , wherein the cutter head cutting system comprises a cutting rotating platform, wherein a bottom of the cutting rotating platform is mounted on the horizontal moving platform; wherein a top of the cutting rotating platform is connected with one end of a pitch oil cylinder, and another end of the pitch oil cylinder is connected with a bottom of a cutting arm; and wherein a rotating disc is arranged at a front end of the cutting arm, the cutter heads are mounted at a front end of the rotating disc, and a rear end of the cutting arm is connected with a case.

4 . The device of claim 3 , wherein the cutter heads comprise driven cutter heads and fixed cutter heads, wherein the driven cutter heads and the fixed cutter heads are alternately arranged on the rotating disc; wherein all the cutter heads are located on a concentric circle of the rotating disc, and a maximum distance between the cutter heads and a center of a circle of the rotating disc is greater than a radius of the rotating disc; and wherein the fixed cutter heads only revolve with the rotating disc, and the driven cutter heads are driven to perform self-rotation during cutting a rock mass while revolving with the rotating disc.

5 . The device of claim 1 , further comprising a case, wherein the case comprises a first driving motor, a second driving motor and a rotating shaft which are located in the case, wherein the first driving motor is fixedly mounted on a bottom plate of the case and the second driving motor is fixedly mounted on a top plate of the case; wherein a first driving gear is mounted at one end of an output shaft of the first driving motor and a second driving gear is mounted at one end of an output shaft of the second driving motor, and a first driven gear meshed with the first driving gear is connected to a rear end of the rotating shaft by a key; wherein a front end of the rotating shaft is located in a cutting arm, and the rotating shaft and the cutting arm are rotatably mounted by a bearing; wherein the front end of the rotating shaft is fixedly connected with a rear end of a rotating disc, and a fixed waveguide is fixedly mounted on a side wall of a rear end of the case; wherein a front end of the fixed waveguide extends into the case, and the front end of the fixed waveguide is mounted at a rear end of a rotary waveguide; wherein the rotary waveguide penetrates through a through hole in a support plate, and a bottom of the support plate is fixed to the case; wherein an input end of the rotary waveguide is allowed to remain stationary under a self-rotation condition of the rotary waveguide, and an output end rotates synchronously with the rotary waveguide; wherein the microwaves are transmitted without loss under the self-rotation condition; wherein gear teeth meshed with the second driving gear are machined on a peripheral surface of the rotary waveguide circumferentially, and a low-power microwave generator is mounted at another end of the fixed waveguide; wherein a front end of the rotary waveguide is connected with a rear end of a rigid waveguide, and a microwave network distributor is mounted at a front end of the rigid waveguide, and the microwave network distributor is divided into a plurality of output ports connected with a plurality of soft microwave coaxial lines respectively; and wherein the soft microwave coaxial lines penetrate through through holes formed in the rotating shaft and the fixed cutter heads in sequence.

6 . The device of claim 1 , wherein the loading device comprises a load-bearing base mounted on a base of the equipment platform, wherein the load-bearing base is slidably mounted on a bottom base through guide rails symmetrically arranged at a top of the load-bearing base, and pushing drives are symmetrically arranged on the load-bearing base; wherein the pushing drives are pushing oil cylinders and are symmetrically arranged along the bottom base; wherein one end of each pushing drive is fixed to the load-bearing base by a support block, and another end of each pushing drive is hinged with a side wall of the bottom base; wherein a load-bearing framework is arranged at a top of the bottom base, and upper pressing plate oil cylinders arranged towards an ore sample are mounted at a top end of the load-bearing framework; and wherein an upper pressing plate is mounted at ends of piston rods of the upper pressing plate oil cylinders, a left pressing plate oil cylinder arranged towards the ore sample is mounted at a side plate of the load-bearing framework, and a left pressing plate is mounted at one end of a piston rod of the left pressing plate oil cylinder.

Assignees

• Univ Northeastern

Inventors

• Lin Feng
• Feng Xiating
• Yang Chengxiang
• Zhang Jiuyu
• Tong Tianyang
• Ao Yunchan
• He Juan

Classifications

• Y02P70/10

  Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working · CPC title

• E21C41/30

  for ores, e.g. mining placers · CPC title

• E21C39/00

  Devices for testing in situ the hardness or other properties of minerals, e.g. for giving information as to the selection of suitable mining tools · CPC title

• E21C35/00

  Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00 · CPC title

• E21C37/16 Primary

  by fire-setting or by similar methods based on a heat effect (drilling by use of heat E21B7/14) · CPC title