Method for lifting of heavy quarry equipment modules

FIELD: mining.

SUBSTANCE: invention is related to machine building support of mining industry, namely as combination of processes in servicing of excavators and roller-bit drilling machines designed for production of minerals by open-cut method. Method for lifting of heavy quarry equipment modules, in which lifting force is developed by power hydraulic cylinders, at the same time energy of high pressure working fluid is used, during the whole process of lifting, possibility is provided for automatic blocking of hydraulic system elements failures. Besides power hydraulic cylinders are equipped with parallel-acting screw jacks, the latter are used, at the moments of modules lifting, to set possibility of synchronous motion with power hydraulic cylinders without formation of lifting force, and at the moments of lifted modules slanting, to provide for the possibility of its leveling.

EFFECT: broader field of application, increased reliability, making process of modules lifting independent.

1 dwg

 

The invention relates to a machine providing the mining industry, in particular as a way formed the basis of the equipment for maintenance repairs and installation and dismantling during the operation of heavy loading and drilling equipment used in mining operations open pit mining method.

Features of the quarry loading (excavators) and drilling (machines) equipment are the aggressiveness of the environment through its chemical exposure, abrasion of rocks, differing widely in their fortress, high energy consumption and intensity of work of large dimensions and weight. The last hundred tone.

These peculiarities lead to intensive wear excavators and drilling rigs.

In addition, there are regulatory restrictions location of maintenance personnel during maintenance and repair work in providing this security.

Specified determines the need for routine maintenance repair work is usually performed in terms of career and related disassembly (Assembly) major components and their mutual displacement. For example, dismantling crawler excavator moves or drilling machine, requiring lifting, respectively, turning and drilling platform.

World who have technical solutions, in which is implemented a way of lifting the drilling module mine setup with a view to its discrete-lateral movement, doing repairs, diagnosis of individual elements performed using hydraulic Jack, hydraulic locks and valves, guides, transverse rollers and other[1, 2, 3, 4]. However, these developments have significant disadvantages: limited use; the complexity of engineering solutions; unreliable because of the possibility of creating an emergency situation in case of failure of elements of the hydraulic system.

The closest of the known technical solutions adopted for the prototype of the claimed invention, for the intended use, operations, implementation, modular design, metrics, applications, functionality, weight and dimension characteristics is a technique used in the system to retrieve wheeled motor steam railway locomotives [5]. According to the method prototype effort lifting locomotive create the jacks due to the energy of the hydraulic system by which serves the working fluid of high pressure individually to each of the hydraulic jacks, in some moments lifting locomotive ensure the sustainability raised (posted) equipment and block in these moments possible failures of the hydraulic system.

Analysis of the operations of the JV is soba-prototype and technical solutions for its implementation indicates the presence of disadvantages.

- Limited sector utilization and disparity regulatory constraints in terms of ensuring the safety of operators. The latter is connected with the necessity of finding staff under raised by hydraulic jacks equipment, i.e. points in the installation safety of the cylindrical rings, and making and action on personnel psychological discomfort influences due to finding his (staff) under raised loads in the tens and hundreds of tons.

- The probability of accidental fall of the raised (posted) equipment in the period before full production back-up ring because of failure of the hydraulic system.

- Occurrence of distortions due to uneven loading of the hydraulic jacks and, as a consequence, the presence of excessive dynamic loading and reducing the resistance raised (posted) equipment from tipping over.

The last of the disadvantages is due to the influence of the uneven distribution of weight raising equipment between hydraulic jacks, i.e. due to raznoobraznost center of mass of the equipment from the contact points of the jacks raised by the module.

The objective of the proposed method of lifting modules career heavy equipment implemented in the system of lifting modules turning or drilling platforms, respectively excavate the and or drilling rig, extension of field of use, reliability and security, the achievement of invariance (independence) of the process of recovery from possible failures of the hydraulic system, creating a comfortable and safe working conditions repair personnel.

The problem is solved in that in the method of lifting modules heavy surface mining equipment, in which the lifting force create due to the energy of the working fluid of high pressure, serves the working fluid individually to each of the hydraulic jacks, in some moments of the lifting block possible failures of elements of the hydraulic system and in these moments provide the stability of the raised equipment from tilting and tipping, optional blocking of failure of the hydraulic system and the stability of the raised equipment provide throughout the lifting process, the blocking action is generated by the permanent efforts of screw jacks, drive them outside dimensions of the raised equipment.

Thanks to new operations were carried out the task: first, increase reliability, and creating a comfortable and safe environment maintenance staff, expanded the scope of use of the basic method.

Comparative analysis of the proposed techniqueschristina with the prior art found no effect of the known solutions to achieve a positive result according to the task.

Thus, this solution meets the requirements of utility, novelty and inventive step, is intended for use in industry - mining industry, implemented using existing components and materials (hydraulic and mechanical jacks, Gidromontazh high pressure pumping station, ratcheting mechanisms, valves, power cylinders double acting and others who have passed industrial testing, certification and serial production in production), as well as the recognized scientific methods and in its implementation in terms of quarries Krivoy Rog mining and processing complexes in the complexes for lifting the rotary platforms, excavators EKG-4, ECG 5 and ECG-8, EKG-10 (codes d, respectively P and P, developer design documentation Institute, Nieroda Krivoy Rog) achieved practical results than meet the requirement of industrial application, which is sold by the author.

The invention is illustrated by the drawing and the description of its constituent elements. Part of implementing the system includes the oil station 1 remote 2-based control valves and instrumentation software 3; in turn, the remote controller 2 via the valves 4, Gidromontazh 5 is connected to the hydraulic jacks . The latter is equipped with hydraulic locks, and hydraulic system to limit emergency pressure level protected adjustable valve; purity of the working fluid of high pressure provide appropriate filters - items not shown. Parallel to each hydraulic cylinder 6 or (jacks) group total bearing area in the form of a single block has a pair of screw jacks 7, each equipped with manual actuator 8 and the ratchet 9 bilateral actions. Union jacks 6 are used when it is necessary to increase efforts to raise when using the latter in relation to the excavators weighing more than 300 tons (EKG-10).

The force of the hydraulic cylinders 6, and security screw jacks 7 are aimed at raising module (platform) 10 the stability of the process control devices 3. Functional interaction of the components is as follows. First carry out organizational and technical preparations for the lifting of the turntable, such as EKG-8: staff training, adherence drive pumping station 1 to the grid, the arrangement of the workplace is the last feature in the career of at least 10 meters from the edge of the ledge, his horizontial with subsequent concrete placement until kratom - the thickness of the concrete 600 mm with dimensions 1200×4000 mm2for block rams (7-6-7) and 1200×8000 mm2for block rams (7-6-6-7). Further, the excavator is placed on the working platform and the lifting blocks are placed as follows: single (7-6-7) in pairs at a distance of 2000±200 mm from each of the caterpillar truck at the rear of the excavator (near congresa), and paired (7-6-6-7) - axis excavator at a distance of 500±100 mm from its front end side (from the bucket). Oil station 1 come from the rear of the excavator on its axis at a distance of not less than 15 m from the excavator, the operator is near the console 2, and assistant operator is outside the bounds of the raised platform in the region where actuator 8 screw jacks 7. Before starting the pumping station 1 sound signal security, and valves 4 is enabled to supply the hydraulic communications 5 working fluid to the hydraulic cylinders 6.

Next, the operator using the control valves of the control panel 2 summarizes the hydraulic Jack 6 to the platform 10 excavator and begins its rise in real terms the rate of rise does not exceed 1 mm/sec. The operator and his assistants control the positioning of the platform to its horizontal position. There is a limit violations of the horizontal raised platform 2°. Assistant operator actuator 8 b the th screw Jack 7 pick them up (7) sequentially with the lifting jacks 6, thereby eliminating the impact of possible failures of elements of hydraulics.

In violation of the horizontal operator of the valves of the remote controller 2 changes the flow of the operating fluid, seeking recovery of horizontality. It is possible arrangement of the development of automatic control of the hydraulic system on the basis of the flow of working fluid to each of the hydraulic jacks with regard to their workload.

The imbalance loading jacks occurs because the specified previously uneven loading of the cylinders of the jacks [4]. Manual drive 8 screw jacks 7 may be replaced by electrotherapist with remote control.

Upon lifting the turntable 10 excavator on technological reasonable height (in the real system 630 mm) and fixing it in the posted state screw jacks 7 shut off the flow of operating fluid from the jacks 6 and turn off the oil station 1. Remove crawler truck from under the turntable for their subsequent repair, and leave the platform in the posted position indefinitely. When spare caterpillar trucks are replacing bred and produce the descent of the platform 10 by reverse drive of the screw jacks 7 using hrapovic mechanisms 9.

Sources of information

1. SU 218096, AS 11/02, 29/22, 17.08.1966.

2. SU 626201, ES/22, 11/02, 29.04.1977.

3. UA 42825, AS 11/02, 29/22, 15.11.2001, bull. No. 10.

4. UA 12809, EV 21/00, 15.03.2006, bull. No. 3.

5. Industrial hydraulic tools. Directory OK-0311-12, 2004, "Energoprom"www.energoprom.ru, 74, 75.

A way of lifting modules heavy surface mining equipment, in which the lifting force create power hydraulic cylinders, use the energy of the working fluid of high pressure, throughout the process of raising the enable automatic blocking of failure of elements of the hydraulic system, wherein the power hydraulic cylinders equipped paralleelnimetusi screw jacks, the last moments of lifting modules, set the synchronous movement with power hydraulic cylinders without forming an effort lifting and through which the moments of occurrence of the distortions of the raised module, provide the possibility of leveling.



 

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