Transfer station electrical drive

FIELD: engines and pumps.

SUBSTANCE: invention relates to excavator electrical drives and allows increasing the service life of traction motors. The transfer station electrical drive is designed to provide for transfer of excavators and drilling machines in open pits with the power supply cable disconnected from the supply circuit. The proposed device is a separate electrical drive per every traction motor configured as a "generator-motor" assembly controlled by the PPD-1.5V-type power magnetic amplifier.

EFFECT: longer life of the motor.

1 dwg

 

The invention relates to the field of excavator drive.

Analogue of the invention is a Converter transistor transfer stations PTPS described in the Technical description and operating instructions UPS Company "United energy", intended for control of a direct current motor stroke excavator type ECG 5.

This source of information is the closest analogue (prototype).

Currently, due to the scale and intensity of work in the career, it increases the need for rapid movement of excavators, drilling rigs within the career, in terms disconnect the power cable from the mains power supply, the great length of roads with gradients not exceeding the allowable technical passport of the excavator and having a width sufficient to maneuver. The application of modern career excavators and drilling rigs DC motor drive stroke type, IPE-90-UM, with a capacity of 90 kW and TE W, 100 kW power complicates this task.

The essence of the invention.

The drive transfer station consists of a stationary diesel generator (item 2 of the drawing) type JAMZ 8401.10-02, with a capacity of 550 PS, on the shaft of which there are two DC generator (item 1 che is the same type PAM-2000, with a capacity of 220 kW and three-phase AC generator (3 in the drawing) (own needs) voltage 380V type ECC-5-91, 50 kW, driven in rotation via a belt drive, and is an individual drive for each motor of the progress made by the generator-motor". The excitation electric constant progress. The control system of electric drive transfer stations is performed by summing the reference signal and signals all the feedbacks on the same amplifier. As the amplifier power is applied to the magnetic amplifier type SDA 1.5 V, located in the control Cabinet (item 5 of the drawing). To provide reverse drive stroke is used, the block consisting of two Polubotok generator and ballast resistors. Control actuator stroke is carried out with the help of the controller. The regulation of the rotation speed of the engine turn - by changing the voltage of the generator from 0 to 500 C. Reversal of stroke engine - change the current direction of the anchor chain. The drive transfer stations installed on the chassis of the car brand "Bela-527".

The features that characterize the invention are:

1. Reliably performs driving of any technological equipment in terms of career, particularly in times of peak load on dizelagregata when performing lifts and turns of this equipment, what causes drawdown of the frequency.

2. Increases the service life of the motors turn.

In the appended drawing presents:

- The DC generator type PAM-2000 - position 1.

- Stationary diesel unit type JAMZ 8401.10-02 - item 2.

- Three-phase AC generator type ECC-5-91 - item 3.

- Body transfer stations - item 4.

- Control Cabinet - item 5.

The invention is implemented on the Lebedinsky mining and processing integrated works.

Device drive transfer stations, intended for driving excavators and drilling rigs in the career, in terms disconnect the power cable from the mains supply, characterized in that it is an individual drive for each motor of the progress made on the system Generator-motor, controlled by means of a power magnetic amplifier type SDA-1,5 Century



 

Same patents:

FIELD: power engineering; internal combustion engines.

SUBSTANCE: invention relates to diesel power-generating stations including two and more diesel generators. Proposed method to decrease consumption of fuel in diesel power-generating station servicing self-contained power systems and employing diesel generators of different power ratings, comes to the following: ac signals, by means of three-phase active power converter connected to bus of diesel power-generating station are converted into dc signals proportional to load of diesel power-generating stations which are fed to analog input of microcontroller from output of which converted signals pass to one of control units of diesel generators providing their starting and stopping. Signals from control unit pass to diesel generator from output of which signals pass to input of microcontroller, and signals from output of microcontroller pass to switch connecting diesel generator with bus of electric station. Stopping or starting of specific diesel generator is done depending on current value of consumed power basing on conditions of minimization of fuel consumption/ If load does not exceed values of power at which specific consumption of fuel of diesel generators are equal, diesel generator of lower power rating is connected, and if load power exceeds value of power at which specific fuel consumptions of diesel generator are equal, diesel generator of higher power rating is connected and diesel generator of lower power rating is disconnected. If load power exceeds value at which consumption of fuel of diesel power station is equal operation of one diesel generator of higher power rating or two diesel generators, diesel generator of lower power rating is connected together with diesel generator of higher power rating and load is distributed between them.

EFFECT: increased economy of diesel power-generating stations by decreasing summary fuel consumption.

FIELD: mechanical engineering; internal combustion engines.

SUBSTANCE: proposed engine has fixed stator, rotor with cylinders whose axes are parallel to axis of rotation of rotor, pistons with rolling members and mechanism. According to invention, mechanism is made ball-like with resilient member between freely rotating balls fitted in thrust plugs. Piston rolling members in contact with balls roll over for reciprocating, and engine is furnished with electric starting and moving generating device arranged directly on rotor and stator of engine.

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FIELD: mobile self-contained electric and thermal energy sources.

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3 cl, 1 dwg

FIELD: engine manufacturing.

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1 dwg

The invention relates to mechanical engineering and can be used as a Converter of movement of the primary internal combustion engine

The invention relates to energy

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FIELD: mine winding plants, particularly to lift skips and cages from deep mines and pits.

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2 cl, 4 dwg

FIELD: mining, particularly to perform stripping and mining in pits with 6-8 crushing index.

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FIELD: opencast mining; quarry transport.

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5 dwg

FIELD: quarry transport.

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9 dwg

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6 cl, 2 dwg

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EFFECT: decreased costs of device production, increased output and decreased rock mining costs.

2 dwg

Quarry excavator // 2296860

FIELD: mining industry.

SUBSTANCE: invention relates to device for excavating and transporting rock mass and it can be used for selective open-cast mining without preliminary ripping from complex structural deposits of horizontal and gentle dip. Proposed excavator includes running mechanism, boom with receiving conveyor, transfer and waste conveyors, working member, control hydraulic cylinders, namely, crows, turning and boom lifting ones, bracket-slider connected with crowd and turning hydraulic cylinders for displacement along guides on housing of crowd hydraulic cylinders, frame connecting housing of crowd hydraulic cylinders hinge-fastened on head of boom, and telescopic receiving conveyor arranged between head part of boom and working member. The latter is hinge-connected to bracket-slider and is made in form of shovel without rear wall and with working edge provided with shock and static teeth.

EFFECT: increased efficiency of opencast mining owing to use of explosionfree technology and provision of selective excavation of ore reducing losses and impoverishment.

2 cl, 3 dwg

FIELD: excavation.

SUBSTANCE: invention relates to dragline bucket suspension and control system. Proposed dragline has rated load capacity by suspended weight exceeding 100 tons. It has support installed for turning on base, boom assembly projecting outwards from support and installed for turning together with support, bucket, rigging and control system. Bucket is suspended from extreme end of boom by means of adjustable hoist cables and is controlled by at least one adjustable drag cable stretching from support to bucket. Rigging has first and second sheaves of boom head arranged on extreme end or near extreme end of boom assembly at fixed distance from each other, one after the other, so that first sheave is located closer to support then second sheave. First and second hoist cables pass over first and second sheaves of boom head, one cable passing over each sheave. First hoist cable passes downwards over sheave and is connected in operating position with front part of bucket. Second hoist cable passes downwards over second sheave and is connected in operating position with rear part of bucket. Control system uses computer to control relative travel of first and second hoist cables through load-lifting device. It is installed to change angle of tilting of bucket in vertical plane by differential displacement of one hoist cable relative to the other.

EFFECT: improved efficiency of dragline operation, provision of accurate adjustment of bucket displacement angle.

9 cl, 22 dwg

FIELD: mining industry; quarry lifts for dump trucks.

SUBSTANCE: proposed lift contains line with closed leaf-and-roll chain. Devices for gripping and transporting of dump trucks are arranged on chain at definite pitch. According to invention, each gripping and transporting device for dump trucks is made in form of twin levers with rolls on free ends hinge-connected to two leaf-and-roll chains and arranged between said chains. Twin levers are installed for turning in vertical plane and moving rolls along guides arranged under guides for running rolls of traction chains. Twin levers are interconnected by platform installed with clearance over way for moving rear wheels of dump trucks and with possibility of arranged on front wheels of dump truck on said platform. Each platform is provided with curvilinear stop side of tension sprocket for engagement with front wheels of dump truck. In quarry and on its flank in zones of entering of dump trucks moving rearwards lips are installed, and in middle part of lift, traction chains are provided with additional drive sprockets. Catchers of broken traction chains are installed at equal step on inclined section of lift. Each catcher is made form of U-shaped shoe arranged over traction chain secured on upper part of guide traction chain for running rolls by means of brackets. Height of shoe increases in direction of movement of traction chain. Bus is secured on guide for twin lever rolls under traction chain. Wedge is freely fitted on traction chain inside shoe for thrusting against front wall of shoe at normal operation of lift and for jumping between shoe and traction chain at change of direction of movement of traction chain after its break.

EFFECT: provision of lifting of loaded dump trucks to flank of opencast and possibility of catching broken off traction chains.

7 dwg

FIELD: mining industry, particularly open cast mining.

SUBSTANCE: method involves loading tanks at lower horizon during tank unloading at upper horizon and lowering empty tanks from upper horizon during loaded tank lifting from lower horizon; providing additional sites for tank loading at lower horizon and corresponding additional sites for tank unloading at upper horizon; laying cable in zigzag manner so that the cable passes along loading and unloading sites and creates pulling branches; connecting tank with aerostat to each pulling branch. Tanks located at upper and lower horizons are fastened to next nearest branch so that distances between loading and unloading sited along the branches are equal one to another. Device for above method realization is also disclosed.

EFFECT: increased capacity.

2 cl, 2 dwg

FIELD: open-cast mining.

SUBSTANCE: invention relates to continuous-operation self-propelled device designed for checking possibility of mining mineral materials and taking out interlayers whose properties, from point of view of their breaking and further transportation, are of vital importance at open cast mining. Proposed device has running gear, frame with drive unit and control panel and cutting drum arranged before running gear and equipped with cutting tools. Said drum is installed in supports of carrying frame for rotation around horizontal axis and is made for adjusting position in height by means of cylinder installed between frames and carrying frame. Crawler-type running gear is used. Cutting drum passes over entire width of device, and it is furnished with guide partitions and guard shield, is functionally connected with chute-like housing and is made for stepless change of speed of rotation, speed of feed and adjusting transverse tilting from one of two sides relative to working platform owing to vertical adjustment of position of one of hinge joints connection device frame and carrying frame which is made in form of forked rotary cantilever.

EFFECT: improved operating capabilities of device.

5 cl, 5 dwg

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