Mining boom cutting machine

FIELD: cutting-loading machines for explosion-free cutting of deposits having complex structures.

SUBSTANCE: mining machine comprises frame with movement mechanism, boom with cutting crown and loading device. Crown has rock-cutting tools. Loading device is made as inclined rotary hoisting table with gathering arms and central drag conveyor. Frame may rotate with loading device installed thereon and with unloading conveyer. Cutting crown may rotate about axis of rotation with respect to longitudinal boom axis through φ angle defined in dependence of rock hardness. Rock-cutting members are made as disc cutters reinforced by hard-alloyed pins and freely rotating in staggered order around replaceable pins.

EFFECT: increased operational efficiency due to extended field of practical usage thereof and increased service life of rock-cutting members.

5 dwg

 

The invention relates to excavation and loading machines designed for nonexplosive selective extraction compound structure fields.

A known machine for layer-by-layer milling of rocks, including the main frame, a working body of the milling type, mounted in bearings on the main frame of the machine, the mechanism of movement in the form of front and rear crawler track system attached movably in the vertical plane to the main frame support elements, suspension arms and hydraulic cylinders control, and the supporting elements of the rear crawler trucks made in the form of U-shaped beam frame, the Central beam which is attached to the main frame by a ball joint, and its end girders are connected with caterpillar trucks and hydraulic cylinders control, where one end of the beams are connected via a reactive pull the main frame [A.S. USSR №1758228, IPC IS 47/00].

A disadvantage of known construction is the low efficiency in the development of fields with complex hypsometry, so as not achieved the required selectivity of the extraction.

Closest to the proposed invention is a continuous miner, consisting of the Executive body : design with telescopic boom with a conical or cylindrical for selecting the Noah crown, the loading device made in the form of an inclined elevating rotary table feeder with sweeper paws and Central scraper conveyor frame with the movement mechanism, hydraulic system, electric equipment [Petrov A.I., shtumpf GG, Smith PV and other Miner mining. Reference desktop M.: Nedra, 1991, p.56-61].

The lack of harvesters of this type is low efficiency due to the limited resource incisors due to the stationarity of their attachment to rock the crown, and nereguliruemost provisions of the crown relative to the longitudinal axis and limited length of milled layer of rocks along working bench.

The task of the invention is to increase the efficiency of the boom milling combine, by expanding the area of rational use and increasing the service life of rock cutting elements.

This is achieved by the fact that the mountain : milling machine containing the frame and the mechanism of movement, a shaft chisel crown, equipped with rock elements, the loading device made in the form of an inclined lifting turntable sweeper paws and Central scraper conveyor, the frame is made rotatable together with installed on it loading device and razgruzochnye, and the bumper crown set with the ability to rotate its axis of rotation relative to the longitudinal axis of the boom angle ϕdefined in terms of a priori known castle rock, with Portorosa elements made in the form of reinforced carbide pins of the disk milling cutters mounted with free rotation on an optical axis in a checkerboard pattern.

Performing a frame rotating together with installed on it loading device and the unloading conveyor provides a favorable trajectory of the Executive body and rational transportation of rocks. Turn the bumper crowns (while maintaining the parallelism of the axes of the cones relative to the axis of rotation fender crowns) provides, on the one hand, guaranteed independent rotation of the cones in the interaction with the bottom, and on the other hand, by turning the whole fender crowns to change the angle of turn of the cones (the plane of their rotation)equal to the angle ϕ turning axis of rotation of the chipping of the crown relative to the boom. As a consequence, creates the opportunity to change the nature and mode of destruction of the breed in accordance with its fortress. Chess the location of the toothed-disk milling cutters on the bumper of the crown ensures uniform loading and smooth milling slope of the escarpment.

DL is the example taken conical or cylindrical working body.

The invention is illustrated by drawings. Figure 1 shows the mountain : milling machine (main view); figure 2 - installation diagram of the conical working body on the arrow; figure 3 - installation of the cylindrical working body on the arrow; figure 4 - cross section a-a of Fig 4, 5 - toothed-disk milling cutter axis.

Mountain : milling harvester includes a frame 1, a swivel relative to the navigation equipment 2. In the front part of the frame installed loading device 3, made in the form of an inclined elevating rotary table feeder with sweeper paws and Central conveyors 4, related handling device with the discharge conveyor 5. In the upper part of the frame set arrow 6, provided at the end of the working body in the form of a conical 7 (2) 8 or cylindrical (Fig 3) fender crowns. Conical crown 7 installed can be rotated by a hydraulic cylinder 9 (2) in the horizontal plane about the axis of the boom angle ϕ. The rotation axis of the crown relative to the axis of the boom angle ϕ can also be implemented axial piston hydraulic motor 10 (Fig 3). Rotation ϕ determined on the basis of the fortress are working breeds. The conical surface 7 or 8 cylindrical fender crowns fitted with a toothed-disk milling cutters 11 installed with the free rotation on an optical axis 12, parallel to the axis of rotation of the crown in a checkerboard pattern. Toothed-disk milling cutter carbide reinforced by the pins 13.

Mountain : milling harvester works as follows.

Before the development of the ledge, the operator sets the harvester, in the face orienting the position using swivel 360° frame 1 relative to the navigation equipment 2. When this arrow 6, installed in the upper part of the frame and is provided at the end of the working body in the form of a conical 7 (2) 8 or cylindrical (Fig 3) chisel bits, is applied to the breast slaughter. In the same direction on the bottom of the ledge under the boom with a working body set loading device 3. Starting work, the operator of the combine harvester, knowing the fortress are working breeds, sets the hydraulic cylinder 9 (2) pneumatic crown 7 at an angle ϕ relative to the boom. The rotation axis of the crown relative to the axis of the boom angle ϕ can also be implemented axial piston hydraulic motor 10 (Fig 3). When this breaker crown, fitted with a toothed-disk milling cutters 11, mounted with free rotation on an optical axis 12 parallel to the axis of rotation of the crown in a checkerboard pattern and reinforced carbide pins 13, starts the milling layer slaughter.

For hard rock, it is recommended to set the angle of the rotation axis of the bumper is oronce axis arrows ϕ =0. In this position the bumper crowns there is no reversal of the cones, so the destruction of the breed is spinning mills at arobase-shearing effect on the face, characterized by the lowest wear weapons.

For rocks of medium strength and the angle of rotation axis fender crowns relative to the axis of the boom, it is recommended to install ϕ=5-10°while the angle of spread of the cone to create a cutting effect on the breed while maintaining the rolling mills, which provides a significant share of rock breaking chipping.

For soft rocks rotation axis fender crowns relative to the axis of the boom accept ϕ=10-45°. Such a turn angle of the cones increases the cutting effect of the destruction of the breed wide slices and major cleavage.

Mountain mass, destroyed fender crown, is poured on the bottom of the ledge, where he gets to the loading device 3, made in the form of an inclined elevating rotary table feeder with sweeper paws. Next, the rock mass is transferred to the Central conveyor 4, and then onto the discharge conveyor 5, also mounted on the rotating frame 1.

The application of the proposed boom milling harvester will improve the effectiveness of its work by ensuring the rational modes of rock failure, cost-benefits of the different levels of performance and energy process with stable parameters milled layers and as a consequence, increasing the service life of rock cutting elements.

Mountain : milling machine containing the frame and the mechanism of movement, a shaft chisel crown, equipped with rock elements, the loading device made in the form of an inclined lifting turntable sweeper paws and Central scraper conveyor, characterized in that the frame is made rotatable together with installed on it loading device and the unloading conveyor, and pneumatic crown set with the ability to rotate its axis of rotation relative to the longitudinal axis of the boom angle ϕdefined in terms of a priori known castle rock, with Portorosa elements made in the form of reinforced carbide pins of the disk milling cutters set with the possibility of free rotation on an optical axis in a checkerboard pattern.



 

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