RU35551U1 - CLEANER - Google Patents

Description

CLEANER

The utility model relates to mining, to the mechanized extraction of minerals, in particular to shearers used in the development of coal seams.

In shearers for loading and stripping of coal, as a rule, passive stripping devices are used, in particular, rotary (flip) sweep shields installed coaxially with screw cutting bodies (screws).

This design of the devices requires ensuring the rotation of the shield relative to the axis of the screw and the free passage of coal when loading it on the downhole conveyor, when the productivity of the working body for loading is higher than its productivity for excavation.

Known shearer with cutting bodies in the form of two screws mounted on rotary gears and rotating together with rotary gears relative to the housing, using passive cleaning boards for loading and cleaning coal. To rotate the shields, drives are used that are offset from the axis of the cutting body to the end of the rotary gear drive actuator. (Promotional brochure of the Zabzhansky Mechanical Plant, Nolshcha, KSV-460N combine).

This arrangement of the sweep shield rotation drive in the coal unloading area worsens the conditions for loading coal by cutting organs due to a decrease in the useful cross section of the loading window, determined by the distance from the end face of the gearbox to the diameter of the screw along the cutters, which negatively affects the performance of the combine.

Known shearer equipped with two actuators mounted pivotally at the ends of the shearer body, each of which contains a gearbox, in the body of which intermediate shafts and wheels are placed, as well as an output shaft with a screw mounted on it, and a cleaning shield mounted coaxially with the screw on

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MPKE21S 27/02

by cleaning the shield mounted coaxially with the screw on the protruding part of the gear housing and connected to the drive gear of the swivel shield rotation mechanism. The swivel shield rotation mechanism is equipped with a hydraulic motor located on the gear case. The hydraulic motor is connected to the cleaning board by means of a shaft, a gear ring, a coupling half and a drive gear. The drive shaft passes inside the axis installed in the housing, on which the bearings of the intermediate wheel are located, connecting the shafts of the auger drive gearbox (Operating manual for the shearer GSh500.00.000RE, Gorlovsky Machine-Building Plant, Gorlovka, 2001).

The disadvantage of this design is that the necessary condition in the gearbox of the executive body is the installation of an intermediate wheel between the gearbox shafts, which increases the gearbox length, its metal consumption, and also reduces the gearbox's efficiency, increases the transmitted power loss and, therefore, reduces the harvester’s productivity in the recess coal.

The utility model is based on the task of creating a shearer, in which by rational placement of the drives of the turning mechanisms of the cleaning boards on the gearboxes of the executive bodies, the metal consumption, consumption of high alloy steels and the efficiency of the gearboxes of the drive gears of the executive bodies are reduced.

The problem is solved due to the fact that in a shearer comprising executive bodies, each of which contains a gearbox, in the case of which intermediate shafts and wheels are placed, as well as an output shaft with a screw installed on it, and a cleaning shield mounted coaxially with the screw on the protruding parts of the gearbox housing and connected to the drive gear mounted on the shaft of the sweep shield rotation mechanism, while the shaft of the sweep shield rotation mechanism is connected to the drive, for example, by a hydraulic motor located on the housing p of the duct, according to the utility model, the drive of the swivel shield rotation mechanism is located coaxially with its intermediate shaft, made hollow with splines on the outer surface and gears mounted on it, while in the cavity of the intermediate shaft there is a motionless tubular body, and the intermediate hollow shaft and tubular the housing is installed in common supports located in the gear housing; the shaft of the sweep shield rotation mechanism is passed through the tubular housing.

With this design of the rotation mechanism of the cleaning boards, the drive gears of the executive body, due to the absence of intermediate wheels, have small dimensions in length, lower metal consumption, an increased efficiency when transmitting power to the executive body, which increases the performance of the combine for coal extraction.

The essence of the utility model is illustrated by drawings.

In FIG. 1 shows a general view of a utility model.

In FIG. 2 is a plan view.

In FIG. 3, section AA in FIG. 1.

The shearer (Figs. 1 and 2) consists of a housing 1, at the ends of which are located pivotally rotary gearboxes 2 and 3 associated with it and mounted on them with augers 4 and 5 and flip screens 6 and 7.

Each of the rotary gearboxes 2 or 3 (Fig. 3), consists of a housing 8, in which the gears of the actuator drive are mounted, including the intermediate hollow shaft 9 with the gear ring 10 and the wheel I. mounted on the shaft. On the output shaft of the gearbox a screw 4 is installed, and on the outer protrusion of the housing 8 is a rotary cleaning shield 6, connected with the drive gear 12 of the mechanism for its rotation. In the axial hole of the intermediate hollow shaft 9 is a stationary tubular body 13 with supports 14 and 15 installed in the housing 8 of the rotary gearbox.

Inside the tubular body 13, a shaft 16 of the swivel shield rotation mechanism with a drive gear cantilever mounted on it is missing

12. The second end of the shaft 16 is connected to the hydraulic motor 17. In the holes 14 and 15 of the tubular housing 13 are placed bearing bearings of the hollow shaft 9,

The work of the harvester is as follows.

When coal is mined, the upstream auger 4 processes the upper part of the coal seam, and the rear auger 5 processes the remaining part of the seam. The coal destroyed by the front auger 4 is discharged directly to the auger conveyor by a screw, the coal destroyed by the rear auger 5 is discharged by means of a cleaning board 7.

After the harvester reaches the end of the lava, the auger 4 goes down to the soil of the formation, and the auger 5 rises to the roof. At the same time, on each rotary gearbox, a hydraulic motor 17 is turned on, which rotates the shaft 16c with the drive gear 12 cantileverly mounted on it, kinematically connected with the scraper shield, forcing it to rotate around the axis of the gearbox in the necessary direction to prepare the movement of the combine in the opposite direction. First Deputy Scientific Work | P.I. Stadnik

Claims (1)

A shearer comprising executive bodies, each of which contains a gearbox, in the case of which intermediate shafts and wheels are located, as well as an output shaft with an auger installed on it, and a wiper board installed coaxially with an auger on the protruding part of the gearbox housing and connected to the drive gear, mounted on the shaft of the swivel shield rotation mechanism, wherein the shaft of the sweep shield rotation mechanism is connected to a drive, for example a hydraulic motor, located on the gear housing, characterized in that the drive mechanism p the gate of the scraper shield is coaxial with its intermediate shaft made hollow with slots on the outer surface and gears mounted on it, while the tubular body is fixedly mounted in the cavity of the intermediate shaft, and the intermediate hollow shaft and the tubular body are installed in common bearings located in the housing gearbox, the shaft of the swivel shield rotation mechanism is passed through the tubular body.