SU299247A1 - CONE GYRATION CRUSHER - Google Patents

Description

The invention relates to the Crushers with the gyratory movement of a grinding cone.

Conical gyratory crushers are known - coarse, medium and fine crushing, in which an eccentric for conveying gyratory movements to a crushing cone is a cylinder with a conical gear pressed in the “LOW” bevel gear (bevel gear). Inside, the eccentric has a hole along and eccentric to the axis of rotation of the crusher, in which the end (shaft) of the shaft of the nucleus is placed & cone.

A gear wheel, which is integral with the eccentric, is engaged with the drive gear of the drive shaft, from which the eccentric and the crushing cone are driven into motion. Therefore, the dynamic effects of the shank of the crushing cone shaft are directly transmitted to the gearing of the bevel gear. This has a particularly negative effect on the service life of the gear hub.

The purpose of the invention is to increase the durability of a gear transmission, an eccentric assembly and to improve the operating conditions of the crusher.

engages with the eccentric through a radial clearance of greater magnitude, than the gap between the eccentric and the sleeve of the frame, by means of the fixed rotary tongue, with

this, during the operation of the crusher, blows from movements of the shaft end in the eccentric ke are transmitted.

If necessary, limit the action of the inertia forces of the drive and gear on

jamming of the crushing cone of large and reducing cone crushers, in which the gear wheel is without counterweight, in the eccentric assembly the torque limit clutch is used as a means of coupling the eccentric with the gear wheel. With this, independence of the gears of the movements of the eccentric in the bed hub is ensured. FIG. 1 depicts the proposed cone crusher fine crushing, longitudinal

incision; in fig. 2 eccentric cone crusher assembly with a gear wheel supported on the nozzle by an eccentric bead on a thrust bearing in the end cover, longitudinal section; in fig. 3 - section along

A-A in FIG. 2; in fig. 4 - connection of the eccentric with the gear wheel with the help of embedded slats when relying on the eccentric shoulder; in fig. 5 - coupling the eccentric with the gear wheel by means of mortgages

FIG. b - eccentric assembly with a gear wheel without counterweight, which is placed on the nozzle and engages with the eccentric by means of a friction clutch of the limiting moment; in fig. 7 is a section along BB in FIG. 6

A crushing cone 4 is placed in a cone crusher consisting of a bed 1 with a central nozzle 2 and an upper part 3 with an armor of a fixed cone, the shaft 5 of which is fitted with an end into the eccentric hole of the eccentric 6 located in the central nozzle 2 and supported on a sub peak 7 in the end cap 8. When the cover 8 is detached, the eccentric can be removed from the crusher downwards without disassembling its upper part.

A bevel gear 9 is mounted on the central nozzle 2, which is engaged with the bevel gear 10 of the drive shaft //, which causes the gear 9 and the eccentric 6, and E to be rotary. The crushing cone 4 has a rotary cone 4. Inside the bevel gear 9 has a thrust sliding bearing 12 and the radial bearing 13. The vertical movement of the toothed wheel 9 from the impact of the thrust force in the gearing is limited by the corny of the spherical bearing 14 of the splitting cone 4.

The eccentric 6 upper part enters the hub of the gear wheel 9 with a great sake; With the help of two fixed rotary tongues 15, it engages with a gear wheel I placed on the base of the bed. To ensure complete independence of the movement of the eccentric in the wheel housing, it is recommended to use no more than two fixed dowels, mainly in the diametrical arrangement.

With this design of the eccentric assembly, complete installation and operation of the gear teeth from eccentric eccentric in the cylindrical bushing is achieved, the clearance between the eccentric bushing 16 and the shank of the crushing cone shaft 5 is ensured by using gaskets under the support 7, and the running-in and running gear are also provided eccentric.

In the absence of a slide bearing 12 on the nozzle 2, the gear wheel 9 is supported by the shoulder of the eccentric 6 installed in the cylindrical sleeve 17 of the nozzle of the base 2 and resting on the support 7 in the end cap 8.

Placing the toothed wheel 9 on the nozzle 2 supported by the eccentric provides for adjusting the clearance in the gearing by applying gaskets under the support 7, and also removing the eccentric from the crusher when the end cover 8. is detached by limiting the lifting force of the toothed gear 9, as and in the first case, is

spherical body 14 splitting cone 4.

In the case when there is no need to remove the eccentric from the crusher with detaching the end cap 8, the gear wheel 9 is connected to the eccentric with two inserts 18, bolted to the gear hub. The weight of the eccentric significantly reduces the effect

spacing force in the gearing on the rise of the gear.

In cone crushers, which do not need the support bearing in the end cap 8 (for example, in the fractional part of a large

crushing), the eccentric 6 is suspended with a large radial clearance, in the hub of the gear wheel I on the collar 19 engages with it by means of mortgages, rotary tongues 15. With this installation of the eccentric in the cylindrical sleeve 16, the running of the drive and the running gearing without gear eccentric, and replacing it does not cause malfunction of the gear wheel bearings. To reduce friction and eliminate wear on the thrust bearing 12, which has a detrimental effect on the gearing, the thrust bearing 12 is replaced by a sliding support 20, which is guaranteed by the presence of a radial support 13 in the gear wheel consisting of two bushings one bronze is placed in the hub of the gear wheel 9, and the other on the branch pipe 2 of the STAIN to protect it from wear. The possibility of using a radial rolling bearing instead of a sliding bearing is also not excluded.

If it is necessary to turn the toothed wheel 9 on the pipe of the bed 2 relative to the eccentric 6 to accelerate the drive when the crusher starts to work under load (with ore crushed in space), or to eliminate jamming of the crushing cone with an unbreakable object between the eccentric 6 and the wheel hub 9 an annular groove 21 is made, in which the pivotal pins 1.5 are placed.

When the eccentric 6 rotates, in the direction indicated by the arrow, the inset pins 15 abut against the stops of the groove 21. When the gear wheel 9 rotates in the direction shown by the dotted arrow, the inset pins

15 are moved in the annular grooves 21 on an arc of approximately 140 ° until it comes into contact with the anti-zero emphasis shown by the dotted line. In this case, due to the gear ratio in gearing, the drive shaft

make about one turn without a load. If the shaft with the engine is connected directly through the coupling coupling, the measles will make it about a turn, and if the engine is connected to the drive shaft through a textural furnace, the measles of the engine will take several turns. Such a start of the crusher to work under load during engine acceleration at idle not only ensures that it starts, but also significantly reduces the installed engine power, as usually the installed engine power is somewhat overestimated compared to the power required to destroy the rock from the launch condition. crusher under load. In crushers with a gear wheel without counterweight and placing it on the branch pipe, eccentric 6, when placed on the hub of gear wheel 9, can engage the latter by means of a torque limit clutch, for example, consisting of two grasping pads 22 bolted 23 on collet of the eccentric 6. The torque from the gear wheel 9 is transmitted to the eccentric by protrusions (stops) 24 entering with a larger gap in the pockets of the pads 22. The lifting of the gear wheel with the eccentric upward at crushers of coarse crushing is limited persistently schayboy sealing sleeve 25 or shoulder 14 podschipnika spherical body is crushed in the cone crusher conductive medium and fine crushing. In the above described cone crusher with an independent eccentric from a gear drive and placing a gear wheel on the branch pipe, as a pin, the harmful influence of the dynamic effects of the eccentric and the shank of the grinding cone shaft on the gearing, the drive shaft and the drive as a whole, and ensures stable contact the teeth of the bevel gear, regardless of the wear and condition of the working surface of the eccentric and the bed sleeve. The adverse effect of the inertia force of the gear wheel counterweight on the work of the eccentric as a result of its tilting and the violation of contact surfaces of the sliding surfaces is also excluded. The subject matter of the invention 1. A cone gyratory crusher comprising a housing, a stand with a central nozzle, a crushing cone, an eccentric with a gear wheel and a drive shaft, characterized in that, in order to increase the durability and improve the operating conditions of the crusher, the gear wheel mounted on the central the tube of the frame with the help of a support, is connected to the eccentric by means of a mortgage swivel pin installed in the annular groove, and this wheel is mounted on the eccentric with a radial clearance greater than the gap between the eccentric and the sleeve of the frame in which the eccentric is installed. 2. A cone gyratory crusher according to claim 1, characterized in that the eccentric is interconnected with the gear wheel by means of a clutch, for example, the frictional moment of torque.

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