PL180576B1 - Bank of pumps for a mining machine - Google Patents

Abstract

1. Pump unit of the mining machine, especially a longwall shearer, driven by a driving motor through the gear system in which it is the oil pump supplies hydraulic consumers power harvester, and the water pump feeds sprinkler system, characterized in that we common body (1) housing the electric the motor (3) has its axles gears and engaged in parallel with subsequent stages of oil gears pumps (7) and (10), main and auxiliary, z which is powered by the main oil pump (7) power and auxiliary hydraulics receivers the pump (10) supplies the combine control system and hydraulic clutches and brakes gear systems, and has two the water pumps (16) in opposing position and driven from a common toothed rack wheel (14) with which each of the pumps (16) is independently coupled.

Description

The subject of the invention is a pump set for a mining machine, especially a longwall shearer.

It is known from Polish patent description No. 166,577 a longwall shearer with a water pump, which has in the series of its assemblies attached to the sled, an oil pump unit for lifting the combine's arms and a water pump unit for a sprinkling system. These pumps are built into the pump unit and embedded in adjacent sealed chambers and, moreover, they are driven from one common shaft, each through a separate gear. The gear wheel of the water pump driving gear is rotatably mounted on a common shaft and only when it is engaged with the shaft it transmits the drive to the water pump. In this solution, the pumping unit is mounted on a sled within the roadheader's units between the main roadheader's feed unit and the electric motor driving both units from one common shaft, while the power to the feed unit is transmitted from the common shaft through the end of the intermediate toothed gear shaft driving the oil pump.

The pump unit of the mining machine according to the invention is driven by a separate drive motor through a gear system. The essence of the invention consists in the fact that in the body housing the drive motor, located in the axes of gears and engaged in parallel with successive gear stages, oil pumps, main and auxiliary, and two water pumps. Counter-positioned water pumps are driven from a common gear, each of which is coupled to the gear itself. The main oil pump of the pump unit is designed to supply the combine's power hydraulics receivers, and the auxiliary pump to supply the control system as well as hydraulic clutches and brakes, while the water pumps supply the combine's sprinkling system. In addition, a pump is mounted on the shaft of one of the gear stages, intended to lubricate the gear components.

The pump set according to the invention is an independent combine module, so the forces acting on the combine body are not transferred directly to the components of the set.

The subject of the invention has been shown in an exemplary embodiment in the drawing which shows a kinematic diagram of the pump assembly.

180 576

The body 1 of the pump unit in the engine compartment 2 has a built-in electric drive motor 3, which is driven through a clutch 4 by a cylindrical gear transmission 5 placed in a sealed gear chamber 6. In the motor axis 3, the main hydraulic pump 7, driven by a permanent clutch, is attached to the body 1. 8. In the axis of the shaft 9 of the gear transmission 5, to the body of the pump set 1 are fastened: auxiliary pump 10 of the hydraulic system and lubricating pump 11 of the pump set, each engaged by a fixed clutch 12, 13 at the ends of the shaft 9. In the axis of the last wheel 14 of the gear 5 in In the water chambers of pumps 15 there are high-pressure water pumps 16 operating in the harvester sprinkling system. The water pumps 16 are coupled to the gear transmission 5 by means of hydraulic multi-disc clutches 17, mounted on the drive shafts of these pumps. The lubricating pump 11 forces the oil filling the gear chamber 6 to the clutches 17. The pump set made in this way constitutes a compact driving module for the full range of pumps operating in various hydraulic systems of a modern longwall shearer.

180 576

Publishing Department of the UP RP. Circulation 60 copies Price PLN 2.00.

Claims (3)

Patent claims 1. The pump unit of the mining machine, especially the longwall shearer, driven by the drive motor through the gear system, in which the oil pump supplies the shearer's power hydraulics receivers, and the water pump supplies the sprinkler system, characterized by the fact that in a common body (1), the electric motor (3) has main and auxiliary oil pumps (7) and (10) located in the axes of gears and engaged in parallel with successive gear stages, of which the main oil pump (7) supplies power hydraulics receivers, and the auxiliary pump ( 10) powers the combine control system as well as clutches and hydraulic brakes of transmission systems, and has two water pumps (16) arranged in anti-parallel and driven from a common toothed wheel (14), with which each pump (16) is independently coupled. 2. Pump group according to claim A pump as claimed in claim 1, characterized in that in the housing (1), a pump (11) for lubricating the components of the transmission gear is mounted on the shaft of one of the stages of the transmission gear including oil pumps. 3. Pump group according to claim The method of claim 1, characterized in that it is an independent combine module.