JPS5948666B2 - Cone crusher adjustment ring tightening device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to intermediate and fine cone crushers, and more particularly to:
The present invention relates to a device for tightening the adjusting ring of a cone crusher.

The present invention can be most advantageously used in the construction and ore mining and beneficiation industries.

Description of the Prior Art Medium and fine cone crushers currently in use are:
It includes a liner-covered adjustment ring and a liner-covered crushing head disposed therein.

A crushing chamber is formed between the outer surfaces of the liner, the chamber becoming progressively narrower toward the base of the tapered liner, and terminating at the bottom at the shortest distance between the outer surfaces of the liner. It is an outlet formed by distance. The crushing head is mounted on a spherical support fixed to the crusher frame. The adjustment ring is threaded onto a support ring mounted on the crusher frame. The crushing head has a drive with an eccentric or non-balanced weight oscillator. The adjustment ring and the liner mounted on the crushing head are formed as removable tapered shells. As a result of heavy wear of the liner, the outlet between its crushing surfaces becomes progressively larger, so that coarser product is discharged from the crushing chamber.

To stabilize the crushing process, the crusher setting is periodically adjusted to return it to its original setting. To adjust the setting between the cones, the adjustment ring is rotated at the threaded joint and thereupon tightened against the support ring.

Tightening is performed using power means that provides a tightening thrust to the threaded joint. The device for tightening the adjusting ring is one of the most critical devices of the crusher, since high impact loads occur in the crushing chamber. A device for tightening the adjusting ring of a cone crusher is known (USSR Inventor's Certificate No. 298, 377, International Classification No. B02C2104, issued August 1, 1969, inventor: Kolesnik G. ,G
) and Pikhalenk I.G.
oI, G0)).

The device includes a support ring threaded onto an adjustment ring on which a clamping ring is threaded, said clamping ring being spaced from said support ring at an end gap, and a wedge jack being mounted on said clamping ring. It is disposed within the support ring and is adapted to apply a clamping thrust to the threaded joint of the adjusting ring with the support ring and the clamping ring. In this device, the clamping ring is threaded onto the adjusting ring and rests on the support ring via a wedge jack placed in an annular recess in the clamping ring and the support ring.

The above-mentioned Kusapijatsuki is formed as a pair of wedges that face oppositely to each other and are stacked one above the other. When the tightening ring is rotated to lock the adjustment ring, the upper wedge is subjected to the action of frictional force. However, it begins to slide vertically relative to the lower wedge, thereby applying a clamping thrust to the threaded joints of the adjustment ring with the support ring and clamping ring. When the adjusting ring is rotated in the opposite direction together with the clamping ring, the upper wedge begins to slide downwards against the inclined surface of the lower wedge, so that there is no upward thrust at the threaded joint. but,
The above-mentioned wedge jacks cannot reliably tighten the adjusting ring on the threaded part. That is, due to the vibration of the adjusting ring, tightening ring, and support ring caused by the crushing impact in the crushing chamber, the frictional force between the wedges disappears, and as a result, the adjusting ring becomes free to rotate backwards, and tightening may not be performed. This is because of its nature. Furthermore, the wedge jack described above is difficult to manufacture. Another device for tightening the adjusting ring of a cone crusher is also known (French Patent No. 2,038,855, International Classification No. BO 22/00,
Registered on January 8, 1971, assigned to BarberGreen CO-Mpany, USA).

The device consists of a support ring screwed onto the adjustment ring;
It is equipped with a lever device with a clamping ring and a double-acting hydraulic cylinder. In this device, the clamping ring is threaded onto the support ring and is locked against rotation with respect to the adjusting ring.

At the periphery of the clamping ring, thrust lever devices pivotally connected to the piston rod of the hydraulic cylinder are mounted at equal distances from each other. The lever of the above lever device is
It is pivotally mounted on a ram which is rigidly connected to the adjustment ring. As in the previously described device, the tightening of the adjusting ring in this French patent device is carried out by applying a thrust force to the threaded joint of the supporting ring with the adjusting ring and the tightening ring.

When pressurized oil is supplied to one of the hydraulic cylinder chambers, the piston rod displaces a pair of levers pivotally connected thereto from an inclined position to a vertical position. As a result, the total length of the lever increases and the distance between the movable ram and its support, which is rigidly fixed to the clamping ring, increases.
The ram moves the adjusting ring relative to the tightening ring, resulting in a mutual wedging of the rings against the support ring and tightening of the adjusting ring. To release the clamping, pressurized oil is supplied to the other chamber of the hydraulic cylinder. This causes the lever to be displaced to an inclined position, removing thrust from the ram and allowing the adjustment ring to move downwardly under gravity. The tapered surfaces of the threads of the support ring and adjustment ring are moved out of contact with each other, eliminating any upward thrust at the joint. However, it is known that the device described above is not suitable for large crushers because its dimensions do not match the equipment with which it is to be mated.

This arises from the need to ensure the strength of the various hinges and levers individually, and the length of said members must be large enough to provide adequate play of the adjusting ring in the threads. It must be done. The large number of levers, hinges and rams complicates the device and makes it difficult to manufacture. Also, the above device is not easy to operate.

The clamping ring and the clamping device fixed thereto rotate together with the adjusting ring when adjusting the crusher setting, which requires frequent repositioning of the refueling hose during rotation. Rotational forces are transmitted through the ram to the adjustment ring, which can cause the ram to fail. Furthermore, due to thread wear, the play increases, which in the case of this device has to be adjusted by adjusting the length of the ram.

To perform this maintenance work, repair personnel must be frequently present at the equipment, which prevents a crusher equipped with such equipment from being fully automated. Also, one cone crusher adjustment ring tightening device is known in the prior art (UK Patent No. 1,378,011;
International classification number BO2C2/00, December 18, 1974
Registration date, Inventor: Louis Wayne Johnson (L
(See OuisWeinJOnsOn).

The cone crusher includes a support ring that is threaded onto the adjustment ring. In this classia,
The adjusting ring tightening device includes a tightening ring and a hydraulic cylinder with a spring-actuated piston rod;
The tip of the rod is seated in a groove, one of the faces of which is defined by a tapered recess in the clamping ring. In this configuration, the clamping ring is screwed onto the support ring, rests on the adjustment ring, and is designed as a split ring.

The hydraulic cylinder is fixed vertically on the adjustment ring,
The piston rod has a tapered tip located in a wedge groove formed by an inwardly tapered recess in the clamping ring and by a cylindrical recess in the adjusting ring. A stack of disc springs located within the hydraulic cylinder provides a downward thrust on the piston rod.

In this case, the piston rod, while deeply entering said groove, provides a horizontal force to move the arcuate part of the clamping ring radially outward, completely closing the gap at the threaded joint with the support ring. to lose. The frictional forces created in the thread and the wedge recess prevent the adjustment ring from rotating inadvertently on the thread. To release the clamping thrust, pressurized oil is supplied into the hydraulic cylinder.

This compresses the spring stack and moves the taper tip of the piston rod to the top of the groove, ceasing its wedging action on the clamping and adjusting rings.
However, this device is unable to provide thrust at the threaded joint of the adjustment ring with the support ring. That is, the clamping ring cannot be moved vertically to provide mutual clamping of the parts of the threaded joint. The frictional force produced by the wedge tip of the piston rod against the cylindrical recess of the adjusting ring cannot provide reliable clamping. This is because, due to the impact in the crushing chamber, the above-mentioned frictional forces are completely eliminated, so that the adjusting ring is free to rotate and thus cannot be tightened. This device is complex in design and difficult to operate. In particular, since the adjusting ring has to rotate together with the hydraulic cylinder fixed on it, this can lead to deformations of the piston rod in contact with the clamping ring, which rotates unevenly, causing the refueling hose to become fluid. It is necessary to periodically reposition it relative to the pressure cylinder. This precludes a complete automation of the procedure for adjusting the crusher setting and thus also results in a loss of time. SUMMARY OF THE INVENTION The main object of the invention is to provide a device for tightening the adjusting ring of a cone crusher, in which the tightening ring and the piston rod of the hydraulic cylinder are constructed and assembled in such a way as to increase the reliability of the device and simplify its operation. It is about providing.

In view of this main object of the invention, a device is provided for tightening the adjustment ring of a cone crusher against a support ring screwed thereon, which device comprises:
a hydraulic cylinder having a compression ring and a spring-actuated piston rod having a tip disposed within the clamping ring, one of the surfaces of said groove being formed by a tapered recess in said clamping ring; According to the invention, the piston rod of the hydraulic cylinder is arranged radially with respect to the axis of the clamping ring with an outwardly directed tapered recess, the other side of the groove being arranged in the support ring. The clamping ring is screwed onto the adjusting ring.

The device proposed here is such that the clamping ring, the piston rod in contact therewith and the hydraulic cylinder are individually stationary during the adjustment of the crusher setting by rotation of the adjusting ring, and therefore the oiling of the hydraulic cylinder is This has the advantage that there is no need to rearrange the hose.

The device proposed here is further characterized in that the part of the hydraulic cylinder to be handled during adjustment faces outwards and emerges outside the protective housing fixed on the support ring, so that said fluid It has the advantage that it is not necessary to remove the housing in order to adjust the pressure cylinder.

The device proposed here further has the advantage of being simple in design and having few components.

It is convenient for the clamping ring, with its cylindrical surface, to be combined with and locked to the support ring. This provides a uniform upward thrust around the entire circumference of the thread, eliminates misalignment at threaded joints, and provides a wedging force without the need to apply a precise amount of hydraulic pressure within a hydraulic cylinder. It can be partially loosened.

It is also practical to attach the hydraulic cylinder to the support ring.

With such a structural arrangement, it is rarely necessary to remove the support ring, thus reducing to a minimum the possibility of damage to the hydraulic cylinder during assembly and repair operations.

Furthermore, in order to provide a self-adjustment function between the tip and the piston rod, for example, by attaching the tip with a gap in the vertical direction to the piston rod, the tip can be moved vertically to the piston rod. It is desirable to install it.

In one such embodiment, the piston rod is not subject to any deforming forces resulting from improper alignment of the parts to be assembled and from adjusting the crusher setting.

Hereinafter, the present invention will be described in detail regarding preferred embodiments thereof with reference to the accompanying drawings.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing a device for tightening the adjustment ring of a cone crusher according to the present invention, and FIG. 2 is a longitudinal sectional view of a modified example of the device for tightening the adjustment ring of a cone crusher according to the invention. FIG. 3 is a top view of another variant of the device for tightening the adjustment ring of a cone crusher according to the invention. BEST MODE FOR CARRYING OUT THE INVENTION Referring to FIG. 1, a device for tightening the adjusting ring of a cone crusher having a support ring 1 screwed onto the adjusting ring 3 by means of a threaded portion 2 is provided. A clamping ring 4 is provided with a fitted and outwardly directed tapered recess 5. The piston rod 6 of the hydraulic cylinder 7 is mounted radially to the axis of the clamping ring 4 and is arranged in a groove 9 formed by the tapered recess 5 and the end face 10 of the support ring 1. It is equipped with a tapered tip 8. The hydraulic cylinder T houses a ram 11 that is in contact with a stack 12 of disk springs that rests on a washer 13 with an adjusting screw 13 screwed into the head 15 of the hydraulic cylinder I. The support ring 1 has a housing 16 fixed thereto.
In addition, it is equipped with packing IT to prevent dust from entering the threaded portion 2. Referring to FIG. 2, it shows a modification of this device,
The clamping ring 4 is engaged with the support ring 1 with its cylindrical surface 18 and is locked by a pin 19 against rotation therewith. It is recommended to mount the hydraulic cylinder 7 on the support ring 1 with the oil supply channel 20. FIG. 3 shows another modification of the engagement structure between the piston rod 6 and the tip 8, in which the protrusion 21 at the tip of the piston rod 6 is loosely fitted into the slot 22 in the tip 8, and the tip 8 is engaged with the piston rod 6. are independently movable. The device for tightening the adjusting ring according to the invention operates as follows. Pressurized oil is supplied to the hydraulic cylinder 7 when it becomes necessary to adjust the setting between the adjusting ring 3 and the liner of the crushing head. The ram 11 compresses the spring stack 12 and reduces the thrust of the tip 8 of the piston rod 6 against the face of the recess 5 and the end face 10 of the groove 9, thereby causing the adjustment ring 3 to be in contact with the clamping ring 4 and the support ring 1. Relieve some of the upward thrust at the threaded joint. After sufficiently rotating the adjustment ring 3 to adjust the required setting between the liners of the cone, the hydraulic pressure is released and the spring stack 12 is moved from the ram 1.
1 is returned to its initial position together with the piston rod 6, whereby the tip 8 pushes the support ring 1 outwards against the clamping ring 4, which moves vertically to eliminate play in the threaded part 2; The required thrust force is generated in these to tighten the adjusting ring 3 against the support ring 1. Since the hydraulic cylinder 7 is fixed to the support ring 1, these damages can be avoided during repairs and assembly. In the embodiment shown in FIG. 2, the clamping ring 4 is moved precisely vertically along the cylindrical surface 18 in the support ring 1 when the piston rod 6 is actuated, so that it Misalignment of the clamping ring is prevented and a uniform distribution of thrust forces on the periphery of the threaded joint is obtained. Furthermore, the presence of the pin 19 prevents the clamping ring 4 from rotating inadvertently together with the adjusting ring 3, so that the clamping ring 4 can be moved only by frictional forces in addition to a precise amount of hydraulic pressure in the hydraulic cylinder T. There is no need to tighten. In another embodiment shown in FIG. 3, the tip 8 of the piston rod 6 is self-adjustable within the groove 9 as the piston rod 6 and clamping ring 4 move, so that some force is transferred to the piston rod 6. is prevented from deforming. The above device for tightening the adjusting ring of a cone crusher according to the invention improves the reliability of tightening the adjusting ring, reduces the labor consumption for operating the device, and reduces the lost time when operating the device. It also makes it possible to simplify the design. Commercial Applicability The present invention can be most advantageously used in the construction and ore mining and beneficiation industries.

Claims (1)

[Claims] 1. A device for tightening an adjustment ring of a cone crusher against a support ring screwed onto the adjustment ring,
In the device comprising a clamping ring and a hydraulic cylinder having a spring-actuated piston rod with a tip disposed within the device, one of the surfaces of the groove being formed by a tapered recess of the clamping ring. , the piston rod 6 of the hydraulic cylinder 7 is arranged radially with respect to the axis of the clamping ring 4, which has an outwardly directed tapered recess, the other side of the groove 9 being connected to the support ring 1. A device for tightening, characterized in that it is formed by an end face 10 of, and that the tightening ring 4 is screwed onto the adjusting ring 3. 2. Claim 1, characterized in that the clamping ring 4 is engaged with the support ring 1 with its cylindrical surface, and a rotation stopper pin is provided between them. Apparatus described in section. 3. Device according to claim 1 or 2, characterized in that the hydraulic cylinder (7) is mounted on the support ring (1). 4. Claim 1, wherein the tip 8 has a slot 22 into which the protrusion 21 at the tip of the piston rod 6 is loosely fitted, and the tip 8 is movable independently with respect to the piston rod 6. 3. The device according to any one of items 3 to 3.