SU1451267A1 - Stepping advancing gear of coal cutter-loader - Google Patents

Description

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N9 05

The invention relates to the mechanization of underground coal mining, in particular, to walking coal feed systems.

The purpose of the invention is to increase reliability, durability and increase productivity.

Figure 1 shows the feed system, a general view; Fig. 2 illustrates the movement mechanism; on fig.Z - the same, top view; figure 4 - section aa in figure 2.

The feeding system of the coal combine walking (Fig. 1) contains the movement mechanism 1 (autonomous), the feed guide 2 in the form of a section rail mounted on the end heads 3 of the bottomhole conveyor, station 4 installed on the combine, and hydraulic control systems.

The movement mechanism 1 transmits the feed forces to the harvester 5 through the hinge link 6.

The movement mechanism 1 (FIGS. 2 and 3) is made in pivotally connected housings 7. The executive body of the mechanism is hydraulic movement cylinders 8, the fixed part 9 of which is connected to the body 7 of the mechanism 1 by hinges 10. The moving part 11 of the hydraulic cylinders of moving hinges 12 connected with sliders 13. The displacement cylinders 8 and the sliders 13 are mounted in pairs in separate housings 7.

In the housing 14 of the slide 13 (Fig. 4), the stopper 16 is moved in the chamber 15 located perpendicularly to the sectional rail 2, with the locking rod 17 engaging the transverse elements 18 of the sectional rail 2.

The housing 14 of the slider 13 has a grip 19, fixing it on the sectional rail 2 in the transverse direction. Moving the stopper 16 performs

hydraulic cylinders 20 fixed to the housing 14 13 and to the stopper 16.

The hydraulic cylinders 20 have hydraulically connected rod cavities 21 and at the same time perform an equal and reverse stroke.

The size h of the working (fixing) part of the fixing rod 17 is selected in accordance with the dimensions of the sectional rail 2 so that when half of the stroke 1 of the hydraulic cylinders 20 is engaged with the transverse elements 18 of the sectional rail 2, there are two corresponding rods 17 and further measurements the position of the rods, the movement mechanism 1 always stops with at least one stop 14. In this step, half the movement of movement 1 of the fixing rod 17 does not exceed the size of the working (fixing) part of the rod n h.

On the housings 7 of the movement mechanism and on the housings 14 of the sliders 13, control nodes 22 are installed, made in the form of electrical or hydraulic sensors of the extreme positions of the sliders.

The proposed feed system works as follows.

The combine is fed alternately by hydraulic cylinders 8 relative to the sliders 13 fixed on the section rail 2. In the extreme position, the sensors 22 switch the hydraulic system automatically to perform the next cycle of operation by another hydraulic cylinder 8. The charging of the idle hydraulic cylinder 8 to the initial position is carried out simultaneously with the working hydraulic cylinder 8 due to the hydraulically connected respective cavities 23 of these cylinders.

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Claims (2)

1. The COAL COMBINE COMBINE STEAM FEEDING SYSTEM, comprising a feed guide and a moving mechanism including hydraulic cylinders, movements, sliders interacting with a feed guide mounted on the conveyor, a hydraulic system and control units, characterized in that, in order to increase reliability, durability and increase productivity the hydraulic cylinders at the end of the assembly line their placement and fixation between the transverse elements of the sectional rail. 2. The supply system according to claim 1, characterized in that the hydraulic cylinders of the fixing rods are made with hydraulically communicating rod cavities, moreover, half the magnitude of the travel of the locking rod does not exceed the magnitude of the working part of the fixing rod.