SU1372041A1 - Working member of excavating machine - Google Patents

Abstract

The invention relates to equipment for excavation of minerals, reduces dynamic loads and expands the technological capabilities of the executive body of the excavation machine (VM). The actuator is made in the form of internal and external drums (B) 8, 17 and is connected to the casing of the shaft by shaft 5. The internal B 8 is attached by means of cylindrical 8 J A A / A / U G i C /) t9 th 7S CO ke

Description

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figure 1

7 to the carrier 6. Inside B 8 there is a power hydrostander (HZ) 9. The piston of the HZ 9 is made in the form of a hydraulic motor and contains the stator 12 and the rotor 13. The stator shaft 15 is attached to the stator 12, which has a tetrahedral shape . The rotor 13 is rigidly connected to the drive shaft 16, connected to the outer B 17 with a working tool 18. On the inner B 8 from the end is fixed

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The invention relates to equipment for the extraction of minerals, in particular coal.

The purpose of the invention is to reduce dynamic loads and expand technological capabilities.

FIG. 1 is a schematic diagram of the layout of the excavation machine; in fig. 2 - the design of the executive body of the excavation machine; in fig. 3 - hydrokinematic scheme of the executive body.

The Executive body of the excavation machine is installed on the housing containing the feed part 1, the electric motor 2 and the gearbox of the cutting part 3, which are rigidly interconnected, as well as the conveyor 4.

The actuator is suspended from the body of the excavation machine on shaft 5, one end of which is fixed to the carrier 6, and the other, rigidly fixed to the machine body, has the ability to rotate around its axis (a typical suspension scheme for the actuator of the executive body of all auger coal combines). To the carrier 6 by means of a cylindrical cup 7, the inner drum 8 is rigidly fixed, inside which a hydraulic cylinder 9 is located and is rigidly fixed to it. In the inner cavity of the hydraulic cylinder there are piston 10 and rod 11 cavities. The piston of the hydraulic cylinder 9 is made in the form of a hydraulic motor, which contains the stator 12 (performs the function of feeding the piston in the axial direction) and the rotor 13 (performs the functions of rotation of the actuator). TO

a snap ring 19, which prevents the penetration of the pin between B 8 and 17. When recessing a niche, the piston part 10 Hz 9 is turned on and the piston with the drive shaft moves to the bottom, cutting the notch with the end part B 17 by the stroke value of the piston. During the notch, the B 17 can make a reciprocating motion along the axis of the executive body and carry out loading of the broken coal. 3 il.

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The stator 12 is fixed with a flange 14 of a tetrahedral hollow shaft 15 (FIG. 2), which passes freely through the housing of a stationary, relative to the carrier 6, inner drum 8 and thereby excludes the possibility of rotation of the piston (hydraulic motor) around its axis. In this case, the piston together with the tetrahedral shaft freely moves in the axial direction. The rotor of the hydraulic engine is rigidly connected to the drive shaft 16, which is rigidly connected to the outer drum 17, the working tool 18 is located on the latter. The inner and outer drums are made centrally. On the inner drum 8, from the end, there is a rigidly fixed ring-shaped ring 19, which prevents coal and other shtaby from falling between the inner and outer drums.

In order to provide stability in the axial and transverse directions, the power cylinder 9 is fixed to the inner drum by means of stiffening ribs 20. Hoses 21 were used to supply fluid to the power cylinder 9, hoses 22 and 23 were applied to the hydraulic motor (Fig. 2).

The hydraulic control unit hydraulic circuit consists of hoses 21-23. high pressure, connecting the corresponding cavities 10 and 11 of the power hydraulic cylinder 9, as well as the hydraulic engine 12 (stator). The hydraulic control unit contains hydraulic distributors 24 and 25 with control from electromagnets 26 with spring return, communication lines 27 and 28, and an adjustable hydraulic pump 29 with an overflow valve 30. An adjustable hydraulic pump 29 is built into the gearbox of the cutting part of the combine.

The excision body of the excavation machine works as follows.

In the initial position (Fig. 3), the fluid supplied by the adjustable hydraulic pump 29 is drained through the overflow valve 30. To bring the drive shaft 16 into rotational movement, the hydraulic distributor 25 is switched by electromagnets 26 to one of the positions and - or c, depending on the direction of rotation . The fluid through the valve 25 through lines 27 and 28 of the connection and the flexible hoses 22 and 23 goes to the stator of the hydraulic motor 12. To reverse the hydraulic engine, it is necessary to switch the hydraulic valve to position c.

To obtain simultaneously the reciprocating motion of the hydraulic motor, the stator of which is made in the form of a piston, the valve 24 must be switched by means of electromagnets 26 to the o or c position (depending on the direction of movement of the upper drum 17). At the same time, the fluid from the hydraulic pump 29 enters the pinhole 10 or piston 11 cavity of the hydraulic cylinder 9 through the communication lines 27 and flexible hoses 20 and 21. The overflow valve 30 is used simultaneously as a safety valve.

The proposed executive body can find application in the partial mechanization of niche excavation, since niche excavation, even with the use of highly mechanized complexes, is carried out with the help of drilling and drilling operations.

The process of niche excavation is carried out as follows. When the combine is located in the upper or lower part of the lava, the piston part of the power cylinder and the piston are turned on along with the drive shaft.

the scrap is moved to the bottom, making the notch with the end portion of the outer drum 17 to the stroke of the piston, then turning on the hydraulic jack for lifting and lowering the actuator on the extracted reservoir power is processed by the bottom.

A niche is excavated along its length by moving the combine along conveyor 4 along the bottom. When the conveyor moves to the face (the used conveyors are currently bending) the niche excavation cycle is repeated. During the notch, the upper drum can reciprocate along the axis of the actuator and thereby load the broken coal (Fig. 3).

Claims (1)

Invention Formula The executive body of the excavation machine, including the inner and outer drums with drive shafts and a working tool mounted on the drums, an extension cylinder for the inner drum rigidly fixed in the cavity of the inner drum, characterized in that in order to reduce the dynamic loads on the executive body and expand technological capabilities, the drive shaft of the drum is made in the form of a hydraulic motor, the stator of which is installed in the extension hydraulic cylinder, forming a piston, and is connected to the hydraulic rod the lindra, which is hollow and tetrahedral in shape, is movable along the horizontal axis of the hydraulic cylinder, and the rotor of the hydraulic motor is rigidly fixed on the drive shaft of the outer drum, while the inner drum is equipped with a pin ring, and the outer drum is mounted with reciprocating and rotational movement relative to the inner the drum. J No one vrfvch h h v tiiiTiI,