RU2248445C1 - Cleaning combine - Google Patents

Abstract

FIELD: mining industry.

SUBSTANCE: device has body with ski and electric engine with hydraulic pump on it, actuating hydraulic engine for moving combine along face through cog and hydraulic engine for raising rotating reducer with screw, drive of which is integrated in rotating reducer. Combine is provided with carriage with shaft and stopping devices. Carriage is mounted with possible longitudinal displacement relatively to combine body via chain contour with drive from sprocket. On carriage shaft additional sprocket is freely mounted, engaged with chain contour and cam sleeve, and braking device for fixing rotating reducer, made of two shoulders, interconnected jointly.

EFFECT: higher efficiency, simplified construction.

4 dwg

Description

The invention relates to mining machines, namely to mining combines for mining in short lavas (up to 50 meters).

A known shearer combine [1, p. 15], comprising a housing with an electric motor, mechanical gears, a feed mechanism, support skis, two augers fixed to rotary gears, and auger drives are integrated in the rotary gearboxes.

The disadvantage of this combine is the design complexity, the inability to use it in short lavas, since all combines of this type are designed to work in long lavas.

The closest to the proposed invention in terms of technical nature and the achieved result is a combine [2, p. 113, Fig. 1.53], comprising a housing with an electric motor, mechanical gears, a feed mechanism, support skis, one screw mounted on a rotary gear. Since the auger is rotated from the main engine located in the combine body through a system of mechanical gears located in the combine and in the rotary gearbox, this significantly complicates the design of the combine and reduces its reliability due to the large number of gear wheels.

The fastening of the rotary gearbox with the screw to one of the sides of the combine harvester does not allow the screw to be brought out in front of the combine from the opposite side of its fastening, which worsens the conditions for loading the chopped coal onto the face conveyor (the chopped coal falls on the combine). The harvester cannot work on medium-sized coal seams according to the shuttle scheme without preparing niches, which reduces its operational capabilities.

The objective of the invention is to simplify the design and increase the efficiency of use.

This problem is solved due to the fact that in a shearer comprising a ski case and an electric motor with a hydraulic pump located in it, a hydraulic motor is set in motion to feed the combine along the face through a gear wheel and a hydraulic motor for raising and lowering the rotary gearbox with a screw, the drive of which is integrated into a rotary gearbox, a carriage with a shaft and locking devices, mounted with the possibility of longitudinal movement relative to the combine body through a chain circuit driven by an asterisk, while m on the shaft of the carriage freely installed an additional sprocket, which engages with a chain circuit and a cam clutch, and a brake device for fixing a rotary gear made of two shoulders interconnected pivotally.

Comparison of the proposed shearer with the prototype and similar solutions known from the existing level of technology, allows to establish its compliance with the criteria of patentability "novelty" and "inventive step".

The proposed technical solution for the shearer is illustrated by drawings.

Figure 1 shows a shearer (main view); figure 2 is a top view of figure 1; figure 3 is a section aa in figure 2; figure 4 - kinematics of transferring a screw with a rotary gear and the carriage from one extreme position relative to the housing of the combine to another extreme position.

The shearer includes a housing 1 with skis 2, an electric motor 3 with a hydraulic pump 4 located therein, driving a hydraulic motor 5 for feeding the combine along the face through a gear 6, and a hydraulic motor 7 for raising and lowering the rotary gearbox 8 with a screw 9, the drive 10 of which is integrated in a rotary gearbox 8, a carriage 11 with a shaft 12 and locking devices 13 and 14, with the possibility of longitudinal movement relative to the harvester body by means of a chain contour 15 driven by an asterisk 16, while additional 12 is freely mounted on the shaft 12 ADDITIONAL sprocket 17 meshing with the chain loop 15 and the cam clutch 18 and brake device 19 for fixing the rotating gear 8 formed of the two arms 20 and 21 pivotally connected together.

The harvester works as follows. The screw 9 is set in the working position to the required height relative to the soil or the roof of the coal seam by turning the shaft 12. For this, the hydraulic motor 7 is turned on and the drive sprocket 16 is driven from it, which drives the sprocket 17 through the chain loop 15, however, the cam clutch 18 is engaged with the sprocket 17 and through this sprocket and clutch 18 the rotation is transmitted to the shaft 12. Rotating the shaft in one direction or another, the rotary gearbox 8 together with the screw 9 can be lowered or to rise. Fixing the position of the system shaft 12 - rotary gearbox 8 - auger 9 is achieved due to the brake device 19. When breaking off coal, the auger 9 must be in front of the combine body, this provides better conditions for loading the beaten coal onto the face conveyor. For this, the carriage 11 must occupy one of the extreme positions on the combine body.

To move the carriage 11, the chain loop 15 is rigidly fixed to it by means of a stopper 13, and the cam clutch 18 is disengaged from the sprocket 17. The chain loop 15 is driven and the carriage 11 moves in one direction or another, depending on the direction of rotation of the sprocket 16. The asterisk 17 rotates freely on the shaft 12, which provides a fixed position to the system shaft 12 - a rotary gearbox 8 - auger 9. The position of the carriage 11 relative to the combine body is fixed by the device 14. The combine works on a shuttle shackle scheme, i.e. coal is broken off when it moves in both directions, therefore it is necessary to turn the screw 9 with the rotary gearbox 8 from one extreme position relative to the combine harvester to another extreme position (see Fig. 4, from position B to position C). If you make a turn with a direct rotary gearbox, then the auger will abut against the rock of the coal seam roof (position B) and the turn will not work. For the rotation of the rotary gearbox and the screw within the coal seam capacity N (Fig. 4), the arms 20 and 21 of the rotary gearbox must be turned relative to each other so that when they rotate relative to the shaft 12, the screw fits in the height of the coal seam (view along arrow E, the position of the auger when turning). After a turn, the rotary gearbox is straightened, fixed, installed in the working position and a new cycle of coal breaking begins.

The technical advantages of the proposed shearer for short lavas are to simplify the design and increase work efficiency.

Simplification and improvement of the application efficiency was achieved by eliminating a significant number of gears transmitted from the main engine located in the combine body to the screw, and moving the screw with a rotary gearbox using the carriage from one extreme position of the combine body to another increases the efficiency of the combine.

Sources of information

1. Combine treatment KVP1. Magazine "Mining machines and automation", No. 3, 2000, p. 15.

2. Machines and equipment for coal mines. Handbook edited by V.N.Khorin. M .: Nedra, 1987, p. 113, Fig. 1.53.

Claims (1)

A shearer including a case with skis and an electric motor with a hydraulic pump located in it, driving a hydraulic motor for feeding the combine along the face through a gear wheel and a hydraulic motor for lifting a rotary gearbox with a screw, the drive of which is built into the rotary gearbox, characterized in that it is equipped with a carriage with a shaft and locking devices installed with the possibility of longitudinal movement relative to the harvester body by means of a chain circuit driven by an asterisk, while on the carriage shaft vobodno an extra sprocket meshed with a chain loop, and a cam clutch and a braking device for fixing the rotary gear made of two arms, pivotally interconnected.

Images