SU883406A1 - Actuator of rope-type coal saw - Google Patents

Description

I,

The invention relates to equipment for the mechanization of trimming of hazardous steep coal plastics for the purpose of degassing them with wire saws.

A known drive of a coal saw for trimming steep seams with a flexible reciprocating cutting member l.

The disadvantage of this drive is the limited stroke of the saw, the inconsistency of the stroke and the impossibility of ensuring low saw speeds. .

It is also known to drive the saw to trim steep seams before working them over the entire height of the floor. The drive includes an engine with a command for reversing the saw stroke, two reducing devices and two rope-guiding rims (friction pulleys) skirted by a rope 2}

The disadvantages of this drive are the bulkiness, intensity and complexity of the design due to the use of NIL as transmission mechanisms from the engine to the traction sheaves of two gears with an I-100 ratio.

The purpose of the invention is to simplify the design, reducing the metal consumption. . This goal is achieved by the fact that each trap rider is equipped with internal and external flexible toothed rings set

10 with the possibility of engagement with each other, the width of the outer one being greater than the width of the inner one, and each reducing mechanism is designed as a carrier with rollers installed

Claims (2)

15 on the support shaft with the possibility of contact, when rotated with the inner surface of the inner ring, and a pair of fixed toothed disks placed inside the rings, and mounted 20 with the possibility of engagement with the side portions of the toothed surface of the outer flexible ring, the number of teeth of which is one or two more the teeth of the fixed gear discs, while the supporting shafts drove kinematically connected with the gear drive motor. FIG. 1 shows a drive, general view ;, FIG. 2 is a section A-A in FIG. 1. The saw drive consists of an IC engine with a reverse command device, two reduction gears 2 (right and left} and two traversing rims 3 and 4 mounted on the frame 5. Each traversing rim is equipped with an inner 6 and outer 7 flexible toothed rings linked with each The outer ring 7 is reinforced with a band 8 made of friction material for coupling with a cable 9. The inner ring has a smaller width than the outer one. Each reducing mechanism is formed by paired fixed rings inside serrated discs 10, rigidly secured splines. IIc support shoes 12. The discs are engaged with the side portions of the toothed surface of the outer ring 7, the number of teeth of which is one or two more than the number of teeth of the discs .2 on the support shaft 13 is installed, drove 14 with three deforming rollers 15, 16 and 17, hinged on axles 18, 19, 20. Shaft bearings 13 in the form of rolling bearings 21 are placed in circular bores of gear discs. Deforming rollers are in constant force on each of the inner flexible ring 6. On each of the support shafts, the gear wheel is fixedly fixed, respectively 22 and 23. The gear wheel 22 of the left support shaft is in direct engagement with the rotor gear 24 of the engine, and the gear wheel 23 of the right support shaft 13 through parasitic gear 25 (axle. rotation conventionally not shown). All gears 22, 23, 24 and 25 are enclosed in the crankcase 26, fastened to the support shoes 12 with bolts 27. The engine is attached to adapter crankcase 26 with adapter 28 and spy lek 29. Support shoes 12 are attached to the drive frame with bolts 30. The cutting drive works following way. 64 When the engine 1 rotates clockwise, the frequency of the carrier 14 of the right-side reduction device rotates clockwise and the carrier of the left-reduction device rotates counter-clockwise, both with the same frequency. When the carrier rotates: the casting rollers interact through the inner flexible rings 6, onto the outer flexible rings 7, causing elastic deformation of the rings, i.e. traversing rims, and rolling them over toothed fixed disks 10 with a small angular frequency or linear speed in the direction of rotation of the carrier. Rope-guiding rims lead to the necessary movement of the cutting rope and saw. When the engine is reversed, the direction of rolling the rims and the rope is reversed. Such a device drive simplifies the design, provides a large gear ratio and significantly reduces its weight. The invention of the drive of the wire saw coal, reciprocating action, including the engine with the reverse gear commander, two reduction mechanisms and two rope-guiding rims, which, in order to simplify the design and reduce the metal intensity, each cable rim is equipped with internal and external flexible toothed rings installed with the possibility of engagement with each other, and the width of the outer ring is greater than the width of the inner one, and each reducing mechanism is designed as a carrier, installed on supporting rollers with rollers with the possibility of contact, when rotated with the inner surface of the inner ring, and a pair of fixed toothed disks placed inside the rings and mounted with the possibility of engagement with the side portions of the toothed surface of the outer flexible ring, the number of teeth of which is one or two more than the number of teeth fixed toothed disks, with the supporting shafts leading kinematically connected with the engine. 5 Sources of information taken into account during the examination 1. USSR author's certificate No. 373412, cl. E 21 C 25/20, 1969. 8834066 2. Ovcharov B.C. et al. Investigation of the method of trimming an outburst of the rope saw. - Coal, 1975, No. 9, p. 17-18 (prototype).