SU1444514A1 - Drive of cutter-loader cutting head - Google Patents

Abstract

The invention relates to the mining industry and is intended for the executive bodies of combines. The aim of the invention is to increase the productivity of the combine and the grade of the coal mined by maintaining a rational relationship between the cutting speed and the moving speed of the combine. For this, the electric motor 1 is kinematically connected with the first input link 2 of the differential 3. The output link 4 of the differential 3 is kinematically connected with the actuator 5. The second input link 6 of the differential 3 is kinematically connected with the tracking device 7. From the electric motor 1 via the input link 2 the differential and through the tracking device 7, made in the gearbox 8 and the pinion wheel 9j, are transferred to the executive unit 5. 1 c.p. f-ly, 1 ip. (L

Description

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The invention relates to the mining industry and is intended for the executive bodies of combines.

The aim of the invention is to increase the productivity of the combine and the grade of the coal mined by maintaining the feed ratio of the cutting speed and moving speed of the combine.

The drawing shows a schematic diagram of the drive of the executive body of the combine.

The drive of the executive body of the combine includes an electric motor 1, which is kinematically connected by means of a clutch, gears and shafts (not shown) to the first input link 2 (semi-axis) of the differential 3, the output link (carrier) 4 of which. kinematically connected through gears, shafts (not shown) with the executive body 5 of the cutting part of the combine. The second input link 6 (semi-axle) of the differential 3 kin is mathematically connected with the tracking device 7.

The next device includes a gearbox 8 and a pinwheel 9, which is engaged with the pinwheel 10 of the feed system of the combine. The sprocket wheel 9 is rigidly fixed to the input shaft 11 of the gearbox 8. Gears 12 and 13 are installed on the input shaft 11 of the gearbox 8, which are kinematically connected to the shaft 1 by means of overrunning clutches 14.

The wheels 16 and 17 are rigidly fixed on the output shaft 15 of the gearbox 8, the Intermediate gear 18 of the gearbox 8 is meshed with the wheels 12 and 17. The electric motor 1 is kinematically connected with the gearbox 19 of the displacement mechanism, on the output shaft of which the drive pin wheel 20 is rigidly fixed.

The device works as follows.

The transmission of torque to the executive unit 5 of the combine cutting unit is carried out in two streams: from the electric motor 1 through the input-one link 2 of the differential and through the tracking device 7, made in the form of a gearbox B and the hinge wheel 9.

The movement of the combine along the bottom is carried out by means of chainless

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th feed mechanism. The rotation from the electric motor 1 is transmitted to the gearbox 19 of the transfer mechanism, the executive body of which is the drive pinion wheel 20. The kinematic interaction of the drive pinnacle 20, when rotated with the pinnage 10, informs the combine the linear speed of movement.

At zero speed of movement of the combine, the rotational speed of the executive body of the cutting part is determined by the transfer of rotation from the electric motor 1 through the first input link 2 of the differential 3. At the same time, the rotation speed of the second input link 6 of the differential. 3 is equal to O due to the lack of a linear feed rate of the combine.

When there is a speed of movement of the combine, created by the driving wheel 20 of the displacement mechanism wheel, the pinion wheel 9, rolling on the pinion bar 10, informs the input shaft 11 of the gearbox a rotational speed proportional to the speed of the combine, resulting in rotation of the second input a link 6 of the differential 3, which summarizes the rotational speeds of the input links 2 and 6 on the output link 4, which is kinematically associated with the actuator 5 of the cutting part of the combine. With increasing speed of movement of the combine increases the speed of rotation of the second input link 6 of the differential 3, therefore, increases the speed of rotation of the actuator 5, i.e. It provides a rational relationship between the speed of movement of the combine and the speed of cutting, which causes an increase in productivity and grade of coal mined.

When the speed of movement of the combine is reduced, the cutting speed is also automatically reduced to a rational relationship between the speed of movement and the speed of cutting. The presence of overrunning clutches 14 in the design of the gearbox 8 ensures i rotation of the second input link 6, differential 3 in the direction of summing the rotations of links 2 and 6 of the differential 3, regardless of the direction of movement of the combine (below:

up and from top to bottom) along the clearing site.

When the shaft 11 of the gearbox 8 rotates clockwise (which corresponds to moving the combine to the right, see drawing), the torque is transmitted to the input shaft 15 of the gearbox 8 through a pair of wheels 13 and 16, and the wheel 12 rotates freely relative to the shaft due to the slip of the overrunning clutch 14 eleven.

When the shaft 11 of the gearbox 8 rotates counterclockwise (which corresponds to the movement of the combine to the left, see drawing), the output shaft 15 of the gearbox 8 translates entirely to the rotation of the wheel group 12, 16 and 17, including the intermediate gear 18, which also allows the direction of rotation of the second input link to be maintained. 6 of the differential 3 when changing the direction of movement of the combine and the direction of rotation of the spindle wheel 9.

44514

Claims (2)

Claim 1. The drive of the executive body of the combine, including the electric motor, g is kinematically connected with the first input link of the differential, the second output link of which is kinematically connected with the tracking device, the input link of the differential, which is kinematically connected with the executive body, different By the fact that, in order to improve the productivity of the combine and the grade of the coal mined by maintaining a rational ratio of the cutting speed and the speed of the combine, the tracking device It is made in the form of a gearbox and a pinwheel, while the input shaft of the gearbox is kinematically connected with the pinwheel, and its output shaft is connected to the second input link, the differential, 2. The drive unit according to claim 1, characterized in that the gearbox has 25 gears, which are kinematically connected to the input shaft of the gearbox via overrunning clutches.