KR20130104299A - Cone type crusher - Google Patents

Abstract

PURPOSE: A cone shaped crusher is provided to have a structure which smoothly supplies hydraulic oil to a hydraulic system which elevates a mantle core structure and prevents hydraulic oil from being leaked during fracture gap control or operation. CONSTITUTION: A cone shaped crusher comprises a main frame (10); a top frame (20) which consists of one or multiple layers safely installed on the upper part of the main frame; a concave (30) which is fixed and installed on the lower inner surface of the top frame; a main shaft (200) in which the lower end is received inside the main frame and the upper end is received inside the top frame by penetrating through the cone cave and which performs gyratory movement without vertical movement; a mantle core assembly (300) which moves along the longitudinal direction of the main shaft by being inserted into the main shaft and performs gyratory movement with the main shaft; and a main shaft driving tool which operates the main shaft in order to perform gyratory movement by being combined with the lower end part.

Description

CONE TYPE CRUSHER

The present invention relates to a cone-type crusher, and more particularly, to a cone-type crusher capable of adjusting the crushing interval.

Cone crusher is a very important crusher in the aggregate industry and mineral processing industry. It has a wide range of uses and has developed various structures and types. The cone crusher is the most widely used type of crusher. Is equipped with a pair of bevel gears and an eccentric drive device called an eccentric sleeve, and a mantle which is a replaceable liner is mounted on the outer circumferential surface of the middle part of the main shaft. The mantle core is firmly coupled, the upper end of the main shaft is above the mantle core and the spherical bearing is combined to bear the radial force of the crushing force applied to the upper end of the main shaft, The vertical component of the breaking force is covered by the spherical thrust bearing coupled to the lower end of the main shaft. The hydraulic system for driving the spherical bearings which support the soft bottom up and down has a structure for adjusting the crushing gap. However, this prior art 1 has a problem that the vertical height of the crusher is malformed because the length of the hydraulic device for driving the lower end of the main shaft is long.

On the other hand, the invention disclosed in PCT International Patent Publication No. WO2009 / 065995A1 (hereinafter referred to as "Prior Art 2") has no hydraulic cylinder for driving the lower end of the main shaft up and down as compared to the prior art 1, The mantle core, which is firmly coupled, can move separately along the longitudinal direction of the main shaft, and the main shaft is formed to have a small diameter portion and a large diameter portion, and a hydraulic cylinder is disposed on the upper surface of the large diameter portion of the main shaft and the lower surface of the cavity inside the mantle core. A working space (hereinafter referred to as a "hydraulic space") is provided, and the mantle core can freely move up and down by hydraulic force along the main shaft. Therefore, the prior art 2 can solve the disadvantage of the prior art 1 which is abnormally high in the vertical height.

According to the prior art 2, the lower end of the main shaft is supported by the spherical thrust bearing, so that the main shaft is gyratory movement by the eccentric driving part, but does not move up and down, A hydraulic passage is formed to move the hydraulic oil to the space. In order to adjust the crushing interval in the prior art 2, the hydraulic oil must be introduced from the lower end of the main shaft, and the high pressure hydraulic oil is stably moved to the hydraulic space between the main shaft and the spherical thrust bearing, which are instigated at high speed. It is almost impossible, and the hydraulic oil leaks through the thrust bearing of the lower end of the main shaft, resulting in a problem of mixing in the lubricating oil for lubricating the eccentric drive unit and the gear.

In order to solve this problem, the prior art 2 proposes to replace lubricating oil itself with hydraulic oil. However, when the hydraulic oil is used as lubricating oil, not only the hydraulic oil is continuously contaminated by dust introduced from the outside, but also there is a problem that the lubricating performance is significantly lower than that of the dedicated lubricating oil. And even bigger problem is that the seal made of elastic material such as rubber to prevent the hydraulic oil from leaking is rapidly damaged by the severe eccentric motion of the lower part of the main shaft, the rough contact surface, and the metallic wear material from the dust or journal bearing or gear. The hydraulic oil filled in the hydraulic space is leaked through the damaged seal, the hydraulic pressure is not maintained, and thus the crushing interval is not kept constant.

In addition, according to the related art 2, the relative rotational movement of the main shaft and the mantle core occurs strongly even though its speed is slow, and a phenomenon in which the inner surface of the mantle core and the main shaft breaks each other by strong friction occurs. If the surface is destroyed, the oil seal is broken due to the rough surface, and the hydraulic oil leaks rapidly. Therefore, the inner surface of the mantle core must be coated with a lubricious material or a liner made of a lubricious material must be installed in an interlocking manner. Because of their heaviness and size, this process is expensive and expensive to perform.

SUMMARY OF THE INVENTION The present invention has been conceived to solve the above-mentioned problems, and has a cone-shaped crusher having a mantle core assembly that can move along the longitudinal direction of the main shaft, and provides a cone-shaped crusher without the risk of leaking hydraulic oil during operation or adjusting the crushing interval. It aims to do it.

Another object of the present invention is to provide a cone type crusher having a structure capable of smoothly supplying hydraulic oil to a hydraulic device for elevating a mantle core assembly.

Another object of the present invention is to provide a cone-shaped crusher without fear of mixing hydraulic oil and lubricating oil.

Another object of the present invention is to provide a cone-shaped crusher in which the seal of the hydraulic device is not broken.

A further object of the present invention is to provide a cone crusher in which the mantle core assembly and the main shaft do not rotate relative to each other.

Another object of the present invention is to provide a cone crusher which does not require coating or inserting a liner on the inner surface of the mantle core assembly.

Another object of the present invention is to provide a cone-shaped crusher with a significantly increased lifespan.

Cone crusher according to a preferred embodiment of the present invention in order to achieve the above object: a top frame consisting of a main frame, one or more layers seated on the main frame, and on the lower inner peripheral surface of the top frame A main shaft fixedly mounted to the main shaft, a lower end of which is accommodated in the main frame, and an upper end of which is penetrated through the concave and is accommodated in the top frame, and which moves up and down and inclines, and the main shaft. A mantle core assembly which is inserted in the main shaft and is movable along the longitudinal direction of the main shaft and is agitated with the main shaft, and the main shaft driving means coupled to the lower end of the main shaft to drive the main shaft to incite; Cone crusher, the hydraulic oil inside the main shaft Is formed and, wherein the mantle is located on the lower side of the core assembly are secured to the main shaft, it said hydraulic oil passage and the crushing gap adjusting flow path is formed in the base plate communicating with no leakage; And a plurality of hydraulic jacks disposed on the crushing gap adjusting plate and supporting the mantle core assembly from below so that the mantle core assembly is movable along the longitudinal direction of the main shaft and communicating with the flow path. .

Preferably, the cone-shaped crusher further comprises: an anti-rotation mechanism formed between the main shaft and the mantle core to prevent relative rotation of the main shaft and the mantle core.

Preferably, the anti-rotation mechanism includes: a first key groove formed on an outer circumferential surface of the main shaft, a key coupled to the first key groove, and formed on an inner surface of the mantle core along a longitudinal direction of the main shaft, It is made of a second key groove that can be inserted and slide.

Preferably, the cone-shaped crusher is: the width of the second key groove is wider than the width of the key, and further comprises a hard elongated plate inserted in the gap between the second key groove and the key.

Preferably, the anti-rotation mechanism comprises: a first spline formed on an outer circumferential surface along the longitudinal direction of the main shaft, and a second spline formed on an inner surface of the mantle core and fitted to the first spline and capable of sliding.

Preferably, the cone crusher is configured to prevent wear of the main shaft and prevent dust from entering the space between the main shaft and the mantle core assembly through the top surface of the mantle core assembly. It further includes a main shaft protective cover installed on the upper surface.

Preferably, the cone crusher further includes a grease seal provided on the lower surface of the mantle core assembly.

Preferably, the cone-shaped crusher further comprises a rotary joint for supplying hydraulic oil to the hydraulic oil passage of the main shaft located in the upper bearing chamber for receiving the upper bearing for supporting the upper end of the main shaft.

Preferably, the rotary joint is: a hydraulic oil conduit which is accommodated in a cylindrical depression formed downward from the upper end of the main shaft and connected to the hydraulic oil passage formed in the center of the main shaft to supply hydraulic oil to the hydraulic oil passage. It is provided.

Preferably, a cover is installed at an upper portion of the upper bearing chamber, a conduit fixing part is formed at the center of the lower surface of the cover, and the hydraulic oil conduit and the external hydraulic oil introducing pipe are coupled to the conduit fixing part.

Preferably, the hydraulic oil conduit is formed of a material that can bend smoothly and resist the force applied in the longitudinal direction, the focal point of the axial movement of the main shaft is located on the hydraulic oil conduit, The rotary seal conduit coupled to the bottom is located below than the focal point of the inflammatory movement.

Preferably, the cone-shaped crusher further comprises a pipe-shaped rotary joint housing fitted to the cylindrical depression, the upper end of the rotary joint housing is formed with a coupling flange, the lower bottom seal groove for preventing leakage 812 is formed to seal the seal, a large cylindrical columnar space in the upper portion, a small cylindrical columnar space in the lower portion formed concentrically, a step portion is formed in a portion where the two cylindrical spaces meet, the step portion is Located below the focal point of the incline movement of the main shaft, a seal groove 842 for preventing leakage is formed on the inner surface of the cylindrical space of the small diameter so that a seal 841 is fitted and the rotary seal conduit Combined.

Preferably, the hydraulic jacks are provided with a closed tubular ram with a closed bottom, and a push rod located inside the ram, which has a smaller inner diameter and a longer length than the ram, and the mantle core assembly accommodates the hydraulic jacks at the bottom thereof. And a push rod extending from the bottom of the ram so as to support the load of the mantle core assembly and fitted into the ceiling bottom of the hydraulic jack receiver.

Preferably, the rod is formed in the upper end and the lower end of the curved surface, the ceiling center portion of the hydraulic jack receiving portion in contact with the upper end of the push rod, and the center of the ram bottom bottom contacting the lower end of the push rod, the upper end and the lower end of the push rod It is formed to have a shape corresponding to each shape.

The cone type crusher according to the present invention has the following effects.

First, there is no risk of hydraulic oil leaking during operation or adjusting the crushing interval.

Second, it is possible to provide a cone-shaped crusher having a structure capable of smoothly supplying hydraulic oil to the hydraulic device for elevating the mantle core assembly.

Third, there is no fear of mixing hydraulic oil and lubricating oil.

Fourth, the phenomenon that the seal of the hydraulic device is broken does not occur.

Fifth, since the mantle core assembly and the main shaft do not rotate relative to each other, there is no need to coat or insert a liner on the inner surface of the mantle core assembly.

Sixth, the service life of the cone crusher is significantly increased.

Seventh, because the structure is relatively simple compared to the prior art, the manufacturing cost can be reduced and the manufacturing process is simple.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description of the invention given above, serve to further the understanding of the technical idea of the invention, And should not be construed as interpretation.
1 is a sectional view showing a cone crusher according to a first preferred embodiment of the present invention.
2 is a cross-sectional view taken along the line AA in Fig.
3 is an enlarged view of the upper bearing and the rotary joint of FIG. 1.
4 is a cross-sectional view showing a cone crusher according to a second preferred embodiment of the present invention.

Hereinafter, a cone-type crusher according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The term cone-shaped crusher used in the present invention is used to collectively refer to a cone crusher, a gyre crusher and the like.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms and the inventor may appropriately define the concept of the term in order to best describe its invention It should be construed as meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

In the drawings, the size of each element or a specific part constituting the element is exaggerated, omitted or schematically shown for convenience and clarity of description. Therefore, the size of each component does not entirely reflect the actual size. In the following description, it is to be understood that the detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

1 is a cross-sectional view showing a cone-shaped crusher according to a first embodiment of the present invention, Figure 2 is a cross-sectional view taken along the line A-A of Figure 1, Figure 3 is an enlarged view of the upper bearing and rotary joint of FIG.

1 to 3, the cone-shaped crusher according to the first embodiment of the present invention will be described.

The cone crusher according to the first embodiment is a main frame 10 having an outer cylindrical shape and a funnel cut and inverted to be seated on the main frame 10 and mounted on the top of the main frame 10. 20 and a concave 30 fixedly mounted on the inner circumferential surface of the top frame 20 while having a funnel shape extending from the upper side to the lower side, the lower end is accommodated in the main frame 10 and the upper end is The main shaft 200 is accommodated in the top frame 20 through the concave 30 and performs gyratory movement without moving up and down, and the main shaft 200 is inserted into the main shaft 200. The main body is movable in the longitudinal direction of the main shaft 200 and the mantle core assembly 300 and the suspension bearing chamber 212 formed in the upper end of the top frame 20 and the main shaft 200 is in the agitated motion Shaft (200) Suspension bearing 222 is coupled to the upper end to support the main shaft 200 to agitate, and the main shaft driving means 260 coupled to the lower end of the main shaft 200 to agitate the main shaft 200. And a crushing gap adjustment base plate 51 positioned below the mantle core assembly 300 and fixed to the main shaft 200, and disposed on the crushing gap adjustment base plate 51 and the mantle core assembly 300. Hydraulic jacks 52 supporting the mantle core assembly 300 from below, and the hydraulic oil passages 712 and 713 formed in the main shaft 200 so that the main shaft 200 is movable in the longitudinal direction of the main shaft 200. It is provided with a rotary joint 250 for supplying hydraulic oil to the furnace.

Like the conventional cone crusher, the cone crusher according to the first embodiment of the present invention is supplied with a crushed object from the top of the top frame 20, the mantle core assembly fitted to the main shaft 200 and the main shaft 200 ( 300 is agitated, and the object to be crushed between the concave 30 and the mantle 321 is to fall to the lower portion of the main frame (10).

In order to more clearly convey the essential technical idea of the present invention, the contents overlapping with the conventional cone type crusher described above among the above-mentioned constitution of the first embodiment will be omitted and the differentiated constitution will be mainly described.

The main shaft 200 has a vertical hydraulic oil passage 712 formed in the longitudinal direction therein, and a horizontal hydraulic oil passage 713 which is bent in the horizontal direction at the lower end of the vertical hydraulic oil passage 712. The hydraulic oil passages 712 and 713 are examples of the hydraulic oil passages that may be formed in the main shaft 200. The hydraulic oil passages are formed in the main shaft 200, so that both the upper end and the outer circumferential surface of the main shaft 200 are formed. It is enough if it can be opened. In addition, the outer circumferential surface of the main shaft 200 is preferably formed with a stepped portion 711 for coupling with the crushing gap adjusting base 51 to be described later.

The mantle core assembly 300 includes a mantle core 320 having a truncated conical shape as a whole and a cylindrical hole at its center, a mantle 321 mounted to the mantle core 320 and having a hollow truncated cone shape, and a mantle 321. A lock nut 234a for firmly coupling the mantle core 320 to the mantle core 320, a main shaft protective cover 35, and a grease seal 37.

The bottom surface of the mantle core 320 is formed with a hydraulic jack receiving portion 313 for receiving the hydraulic jacks 52 to be described later. The shape of the hydraulic jack receiving portion 313 may be formed in various ways, for example, as shown in Figures 1 and 2, a plurality of columnar spaces can be formed on the circumference, in addition, the recessed one It may be formed as an annular space of.

In order to prevent relative rotation of the main shaft 200 and the mantle core 320, it is preferable that a rotation preventing mechanism is installed between the main shaft 200 and the mantle core 320.

As an example of the anti-rotation mechanism, as shown in FIG. 2, a first key groove 71 is formed on the outer circumferential surface of the main shaft 200, and the key 72 is firmly coupled to the main shaft 200, and the main A second key groove 312 may be formed on the inner surface of the mantle core 320 along the longitudinal direction of the shaft 200, where the second key groove 312 is fitted to the key 72 to slide. Combined.

On the other hand, as a modified example of one example of the anti-rotation mechanism shown in Figure 2, the width of the second key groove 312 is formed wider than the width of the key 72, between the second key groove 312 and the key 72 In the gap of the hard, long, long plate may be inserted.

Since the anti-rotation mechanism is provided in the present invention, the mantle core assembly 300 is moved up and down along the main shaft 200 so that relative rotational movements do not occur.

In addition to the above examples as the anti-rotation mechanism, the main shaft 200 and the mantle core 320 may be splined to be coupled to each other. That is, the first spline is formed on the outer circumferential surface of the main shaft 200 along the longitudinal direction, and the second spline is formed on the inner surface of the mantle core 320 to be inserted into the first spline and slide. It can be adopted.

The first key groove 71 is positioned at an intermediate portion of the second key groove 312 in a vertical direction, and thus, the mantle core 320 is not provided until the upper surface of the key 72 reaches the upper end of the second key groove 312. The mantle core 320 may rise until it descends or the bottom surface of the key 72 reaches the lower end of the second key groove 312. In order to prevent wear of the main shaft 200 and to prevent dust from entering the space between the main shaft 200 and the mantle core assembly 300 through the top surface of the mantle core assembly 300, the mantle core assembly The main shaft protective cover 35 is firmly fastened with a bolt 352 on the upper surface of the 300.

The main shaft protective cover 35 has a pipe shape having a flange at the bottom thereof, and its inner diameter is somewhat larger than the outer diameter of the main shaft 200. On the other hand, the dust wiper 351 is preferably installed at the upper end of the main shaft protective cover 35 so that the dust on the main shaft 200 can be wiped more efficiently when the mantle core assembly 300 is elevated.

A grease seal 37 is fastened to the bottom surface of the mantle core assembly 300 with a bolt 371. Therefore, in the state in which the main shaft 200 and the mantle core 320 are coupled, the inside of the cylindrical hole of the mantle core 320 is in a sealed state, and a grease injection hole formed in the flange portion of the main shaft protective cover 35 ( Grease may be injected through 353 to lubricate both the outer diameter of the main shaft 200, the inner surface of the cylindrical hole of the mantle core 320, and the surfaces of the key 72 and the second key groove 312.

During the crushing of the crushed material due to the agitating motion of the main shaft 200, the force for relative rotational movement is applied to both of them due to the difference in diameter between the outer diameter of the main shaft 200 and the inner diameter of the mantle core 320. Since 72 slides without leaving the second key groove 312, the rotational movement between the two can be almost ignored. Therefore, friction and wear occurring between the outer diameter of the main shaft 200 and the inner diameter of the mantle core 320 are significantly reduced.

However, since the key 72 makes strong contact with the second key groove 312, as shown in FIG. 2, the second key groove 312 is processed to be wider than the width of the key 72 so as to be hard and long in the gap between the two keys. It is preferable to insert the plate 314.

As an upper bearing for supporting the upper end of the main shaft 200, a spherical bearing may be employed, but a suspension bearing 222 is preferably used.

The crushing gap control base plate 51 is positioned below the mantle core assembly 300, is fixed to the main shaft 200, and communicates with the hydraulic oil passages 712 and 713 formed in the main shaft 200 without leakage. , 514, 515 are formed therein.

The crushing gap adjustment base plate 51 has a thick washer shape and has a cylindrical coupling hole 512 having a stepped portion 511 formed at the center thereof. The main shaft 200 is forcibly fitted into the coupling hole 512 until the stepped portion 711 of the main shaft 200 abuts on the stepped portion 511, and the crushing gap adjusting support plate 51 The main shaft 200 can be firmly coupled.

The annular flow passage 513 is formed on the inner surface of the coupling hole 512 so as to be in communication with the horizontal hydraulic oil passage 713 formed in the main shaft 200, and the annular flow passage (513) A radial flow path 514 is formed in communication with 513, which extends below the bottom center of the hydraulic jack 52, which will be described later. At the end of the radial flow path 514, a vertical flow path 515 is formed toward the center of the bottom surface of the hydraulic jack 52 vertically upward.

The hydraulic jacks 52 are arranged outside the main shaft 200, are disposed in a circular shape on the crushing spacing plate 51 to communicate with the vertical flow path 515, and support the mantle core assembly 300 from below.

The hydraulic jack 52 has a closed tubular ram (ram) 521 having a closed bottom surface, a pusher 526 having a smaller inner diameter and a longer length than the ram 521, and positioned inside the ram 521, and a ram 521. And a cylinder 525 for elevating the ram 521 by hydraulic pressure, and a bottom plate 522 on which the cylinder 525 is disposed.

The push rod 526 is formed between the upper end and the lower end of the curved surface including the hemispherical shape and is positioned between the bottom of the ram 521 and the ceiling of the hydraulic jack receiver 313 to support the load of the mantle core assembly 300. The center of the ceiling of the hydraulic jack accommodating part 313 and the lower end of the ram 521 of the hydraulic jacks 52 in contact with the upper end of the push rod 526 may be contacted with each other. It is formed concave so as to have a shape corresponding to the shape of the upper end and the lower end of the push rod 526, respectively.

Although the ram 521 protrudes a lot from the cylinder 525, the push rod 526 always applies a load to the bottom center of the ram 521. Thus, the present invention compares with the case where only the ram 521 is provided. There is an advantage that the ram 521 can be stably maintained without being inclined from the cylinder 525.

The bottom plate 522 is located below the cylinder 525, and the hydraulic oil can enter and exit the hydraulic jack 52 through the hydraulic oil passage 523 formed at the center thereof, and adjust the crushing interval by the plurality of coupling bolts 524. It is fixed to the backing plate 51.

 The hydraulic oil passage 523 communicates with the vertical oil passage 515 below, and in order to prevent leakage between the two, the tube 516 is inserted into the lower portion of the hydraulic oil passage 523 and the upper portion of the vertical oil passage 515. At the lower end of the hydraulic oil passage 523, a circular groove 518 having a diameter larger than the outer diameter of the tube 516 is formed, and the O-ring 517 is inserted therein.

Rotary joint 250 is located in the upper bearing chamber 212 supporting the upper end of the main shaft 200, the cylindrical depression 714 formed downward from the upper end of the main shaft and the depression 714 A rotary joint housing 81 having a pipe shape to be fitted, an external hydraulic oil introduction pipe 84 serving as a passage for hydraulic oil supplied from the outside, and a hydraulic oil conduit for supplying hydraulic oil to the vertical hydraulic oil passage 712 of the main shaft 200. (82), a conduit fixing portion (83) for communicating between the external hydraulic oil introduction pipe (84) and the hydraulic oil conduit (82) and fixing one end thereof, and a hydraulic oil conduit (82) and a vertical hydraulic oil passage (712). And a rotary seal conduit 843 coupled to the lower center portion of the rotary joint housing 81.

The suspension bearing chamber 212 in which the rotary joint 250 is located is provided with the suspension bearing chamber outer cylinder 216 which has an opening formed up and down, and the cover 214 which covers the upper part of the suspension bearing chamber outer cylinder 216. . A fixed wheel 224 is installed on the inner circumferential surface of the suspension bearing chamber outer cylinder 216, and the rotary wheel 226 coupled to the upper outer circumferential surface of the main shaft 200 contacts the inner circumferential surface of the fixed wheel 224 to incite. Will be 3 is a place corresponding to the focal point of the agitating motion when the main shaft 200 is an agitating motion, which is theoretically no motion at all.

The rotary joint housing 81 has a coupling flange formed at the upper end, and a seal groove for preventing leakage is formed at the lower end of the rotary joint housing, and the seal is fitted in the upper part. Formed concentrically, a stepped portion 814 is formed at a portion where the two cylindrical spaces meet. Position the coupling flange of the rotary joint housing 81 on the top of the main shaft 200 and fix it with a bolt. Here, the step portion 814 is located below the focal point (C) of the agitating motion of the main shaft 200, the seal groove 842 for preventing leakage is formed on the inner surface 811 of the cylindrical space of the small diameter The seal 841 is inserted, and the inner surface 811 of the columnar space is preferably coated with soft bronze or brass.

A conduit fixing part 83 is formed at the center of the lower surface of the upper cover 214 of the suspension bearing chamber. A hydraulic oil conduit 82 is coupled to the lower end of the conduit fixing part 83 and an external hydraulic oil introducing pipe 84 is provided at the side. ) Is combined.

A central portion of the rotary joint housing 81 is formed with a depression, which is a cylindrical space, and at least half of the flexible hydraulic induction pipe 82 is accommodated in the depression. The cylindrical space may have a diameter such that the hydraulic oil conduit 82 does not come into contact with the inner surface 813 of the rotary joint housing 81 when the main shaft 200 performs an agitating motion.

Rotary seal conduit 843 is a pipe shape, is formed of a hard heat-treated material. The upper part of the rotary seal conduit 843 is smaller in diameter than the lower part, and a plurality of separation prevention jaws 8251 are formed in the outer diameter, and the lower end of the hydraulic oil conduit 82 is fastened to the upper part of the rotary seal conduit 843. The tightening pipe 844 is coupled to tighten the outer peripheral surface of the lower end of the hydraulic oil conduit 82 in a state. Therefore, even if the pressure of the hydraulic oil is strong, the hydraulic oil conduit 82 can be reliably prevented from being separated from the rotary seal conduit 843. The rotary seal conduit 843 is fitted to the inner surface 811 of the cylindrical space.

The hydraulic oil conduit 82 is preferably formed of a material that can bend smoothly and strongly resist the force exerted in the longitudinal direction. For example, a rubber hose that is wound around the outer circumferential surface of a metal wire such as iron can be used. Can be.

The lower end of the hydraulic oil conduit 82 can be moved slightly by following the agitating motion of the main shaft 200, but the upper end is coupled to the conduit fixing part 83 and does not move at all.

Hereinafter, the operation of the rotary joint 250 will be described in detail. When the main shaft 200 is agitated and the crusher crushes the crushed object, a pressure for pushing down the push rod 526 of the hydraulic jack 52 and the ram 521 connected thereto by the crushing force is generated. This pressure acts as a force to push the rotary seal conduit 843 upward through the horizontal hydraulic oil passage 713 and the vertical hydraulic oil passage 712 formed in the main shaft 200. However, the outer circumferential surface of the rotary seal conduit 843 is sealed by an o-ring member such as an O-ring 841 located on the inner surface 811 of the small diameter cylindrical space formed in the rotary joint housing 81 so that the hydraulic oil does not leak. Since the conduit 82 is formed of a material capable of resisting the force applied in the longitudinal direction, the rotary seal conduit 843 may be stably supported without being pushed upward by the hydraulic oil conduit 82.

On the other hand, when the hydraulic oil conduit 82 is disposed such that the focal point C of the axial motion of the main shaft 200 is positioned on the hydraulic oil conduit 82, the bending of the hydraulic oil conduit 82 is minimized, and thus the life of the hydraulic oil conduit 82 is minimized. This is long, there is an advantage that the agitation movement of the main shaft 200 is smooth.

The step 814 and the rotary seal conduit 843 of the rotary joint housing are preferably located below the location of the focal point C of the agitating motion. In this case, the rotary seal conduit 843 follows the agitating motion of the main shaft 200 to perform the agitating motion, but the hydraulic seal conduit 82 located near the focal point C of the agitating motion among the Rotary seal conduits 843. The joint with is only slightly moved. Therefore, the hydraulic oil conduit 82 is structurally unreasonable in performing a minute movement along the inflammatory motion of the main shaft 200.

On the other hand, as the crushing action proceeds, the main shaft 200 rotates at a low speed due to the diameter difference between the outer diameter of the mantle 321 and the inner diameter of the concave 30, but the rotary seal conduit 843 is slightly Only agitation of the movement does not rotate. That is, only the sealing members such as the rotary joint housing 81 and the O-ring 841 which are firmly coupled to the main shaft 200 rotate at low speed, and the rotary seal conduit 843 performs the relative movement at a slow speed with the O-ring 841. Even if the O-ring 841 can continuously seal the rotary seal conduit 843, the pressure of the hydraulic oil is kept stable.

In the first embodiment, the main shaft driving means for agitating the main shaft 200, an eccentric driving unit 260 for accommodating the lower end of the main shaft 200, a pulley connected to the eccentric driving unit 260, A belt for rotating the pulley is provided.

4 is a cross-sectional view showing a cone crusher according to a second preferred embodiment of the present invention.

A second embodiment of the present invention will be described with reference to FIG. 4, and in order to avoid duplication, the description will be mainly given of differences from the first embodiment. Compared with the first embodiment, the second embodiment differs in that the main shaft drive means is different and the conventional bearing 104 is used in place of the suspension bearing 222.

The main shaft driving means of the second embodiment includes an axial sleeve 95 equipped with journal bearings 91 and 92, a pair of bevel gears 102 and 103, and a lower end of the main shaft 200. Is driven by them. In addition, according to the second embodiment, the spherical thrust bearings 93 and 94 attached to the bottom surface of the lower end of the main shaft 200 support the vertical component of the crushing force, and therefore, only the radial force is used. The conventional bearing 104 to support may be used as a bearing to support the upper end of the main shaft 200.

A method of elevating the mantle core assembly 300 by using the hydraulic jack 52 or a method of supplying hydraulic oil to the main shaft 200 for agitating motion using the rotary joint 250 is the same as the first embodiment.

When the cone-shaped crusher according to the present invention crushes the crushed material, such as rock, the hydraulic jack 52 can stably handle the crushing power, the crushed material can be smoothly crushed because there is no fear of leakage. In addition, since the mantle core assembly 300 rotates at a low speed together with the main shaft 200, there is no relative rotational movement between the main shaft 200 and the mantle core 320, and as a result, the mantle core 320 is reduced. It is not necessary to coat the inner surface of the panel with a lubricity material.

When a foreign substance that cannot be broken, such as a large metal piece, is introduced into the cone-shaped crusher according to the present invention, the mantle core assembly 300 is operated by operation of a hydraulic oil accumulator (not shown) and a relief valve (not shown) connected to the hydraulic line. As the fall decreases to increase the crushing interval, foreign matter can be easily discharged and the crusher can continue to operate smoothly without damage.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not to be limited to the details thereof and that various changes and modifications will be apparent to those skilled in the art. And various modifications and variations are possible within the scope of the appended claims.

35 main cover protective cover 37 grease seal
51: shredding interval adjustment base plate 52: hydraulic jack
71: first key groove 72: key
81: rotary joint housing 82: hydraulic oil conduit
83: conduit fixing portion 84: external hydraulic oil introduction pipe
200: main shaft 210: suspension
212: suspension bearing chamber, upper bearing chamber 222: suspension bearing
250: rotary joint 300: mantle core assembly
312: second key groove 313: hydraulic jack receiving portion
320: mantle core 321: mantle
513: annular flow path 514: radial flow path
515: vertical euro 521: ram
523: hydraulic oil passage 525: cylinder
526: push rod 712: vertical hydraulic oil passage
713: horizontal hydraulic oil passage 714: depression
843: Rotary Seal Conduit

Claims (14)

A main frame, a top frame composed of one or more layers seated on the main frame, a concave fixedly mounted on a lower inner circumferential surface of the top frame, and a lower end received inside the main frame and an upper end A main shaft that is accommodated in the top frame through a concave and moves up and down and does not move up and down; In the cone-shaped crusher having a mantle core assembly, and the main shaft driving means coupled to the lower end of the main shaft to drive the main shaft to agitate,
The hydraulic oil passage is formed inside the main shaft,
A crushing spacing adjusting plate positioned below the mantle core assembly and fixed to the main shaft and having a flow passage communicating therewith without leakage; And
Disposed on the crushing spacing plate and supporting the mantle core assembly from below so that the mantle core assembly is movable along the longitudinal direction of the main shaft, arranged outside the main shaft, and in communication with the flow path; Cone crusher comprising a plurality of hydraulic jacks. The method of claim 1,
And a rotation preventing mechanism formed between the main shaft and the mantle core to prevent relative rotation of the main shaft and the mantle core. The method of claim 2,
The anti-rotation mechanism is:
A first key groove formed on an outer circumferential surface of the main shaft;
A key coupled to the first key groove;
And a second key groove formed on an inner surface of the mantle core along a longitudinal direction of the main shaft, the second key groove being slid into the key. The method of claim 3,
The width of the second key groove is wider than the width of the key,
And a hard, elongated plate inserted into the gap between the second key groove and the key. The method of claim 2,
The anti-rotation mechanism is:
A first spline formed on an outer circumferential surface along a longitudinal direction of the main shaft,
And a second spline formed on an inner surface of the mantle core and inserted into the first spline to slide therein. The method of claim 2,
In order to prevent wear of the main shaft and to prevent dust from entering the space between the main shaft and the mantle core assembly through the upper surface of the mantle core assembly, the main shaft protective cover is installed on the upper surface of the mantle core assembly The cone type crusher, further comprising. The method of claim 2,
And a grease seal provided on the lower surface of the mantle core assembly. The method of claim 1,
And a rotary joint located in an upper bearing chamber accommodating an upper bearing for supporting the upper end of the main shaft, the rotary joint for supplying hydraulic oil to the hydraulic oil passage. 9. The method of claim 8,
The rotary joint is:
Cone type is provided with a hydraulic oil conduit for receiving at least half in the cylindrical depression formed downward from the upper end of the main shaft, connected to the hydraulic oil passage formed in the center of the main shaft for supplying hydraulic oil to the hydraulic oil passage Crusher. 10. The method of claim 9,
A cover is installed on the upper portion of the upper bearing chamber,
A conduit fixing part is formed in the center of the lower surface of the cover,
The conduit fixed portion is a cone crusher, characterized in that the hydraulic oil conduit and the external hydraulic oil introduction pipe is coupled. 10. The method of claim 9,
The hydraulic oil conduit is formed of a material that can smoothly bend while resisting the force applied in the longitudinal direction,
The focal point of the agitating motion of the main shaft is located on the hydraulic oil conduit,
The rotary seal conduit coupled to the lower end of the hydraulic oil conduit is a cone-shaped crusher, characterized in that located below the location of the focus of the inflammatory movement. 10. The method of claim 9,
Further provided with a pipe-shaped rotary joint housing fitted to the cylindrical depression,
A coupling flange is formed at the upper end of the rotary joint housing,
Seal bottom is formed at the bottom of the seal groove 812 for preventing leakage, the seal is fitted,
A large diameter cylindrical space is formed in the upper portion, and a small cylindrical space in the lower portion is formed concentrically, and a stepped portion is formed at a portion where the two cylindrical spaces meet.
The staircase is located below the place where the focal point of the agitating motion of the main shaft is located,
Cone crusher, characterized in that the sealing groove 842 is formed on the inner surface of the cylindrical space of the small diameter to seal the seal (841) is fitted and the rotary seal conduit is coupled. The method of claim 1,
The hydraulic jacks are provided with a closed tubular ram with a closed bottom, and a pusher located inside the ram with a smaller inner diameter and a longer length than the ram,
The mantle core assembly has a hydraulic jack receiving portion for receiving the hydraulic jacks on the bottom,
And the push rod is extended from the bottom of the ram so as to support the load of the mantle core assembly and fitted to the ceiling bottom of the hydraulic jack receiving portion. The method of claim 13,
The push rod is formed with a curved upper end and lower end,
The center portion of the ceiling of the hydraulic jack receiving portion in contact with the upper end of the push rod, and the center portion of the ram bottom contacting the lower end of the push rod is formed to have a shape corresponding to the shape of the upper end and the lower end of the push rod, respectively. .

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