Wedge attachment of outer cone crusher wear part
Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-06-10
- Publication Date
- 2026-03-18
Smart Images
Figure FI2024050303_19122024_PF_FP_ABST
Abstract
Description
[0001] WEDGE ATTACHMENT OF OUTER CONE CRUSHER WEAR PART
[0002] TECHNICAL FIELD
[0003] The present disclosure generally relates to a wedge attachment of an outer wear part of a cone crusher.
[0004] BACKGROUND
[0005] This section illustrates useful background information without admission of any technique described herein representative of the state of the art.
[0006] Rocks and other mineral material can be crushed between inner and outer wear parts of a cone crusher. The inner wear part is conical and rests on a support cone. The outer wear part may be generally conical. The outer wear part is supported by a bowl. The bowl may be height adjustable, e.g., with a thread adjustment.
[0007] The outer wear part faces significant forces that could uncontrollably move the outer wear part if not properly attached. Typically, both the bowl and the outer wear each comprise a uniform conical body. A cone crusher operates such that the inner wear part directs a crushing force to different directions in a rotating manner. Any play between the outer wear part and the bowl would immensely wear both the outer wear part and the bowl. Even with a tight fitting, contacting portions of the outer wear part and the bowl are subject to wear. The bowl may be made of harder or more wear resistant material such that the wearing would entirely or mostly occur in the outer wear part. However, due to the wear, the outer wear part may become loosely fitted resulting in accelerated wearing. A wedge attachment of the outer wear part may suitably allow tightening the outer wear part against the bowl.
[0008] A mineral material crusher is subjected to extremely harsh conditions as small rock particles, sand, and sand dust are excessively present. Moreover, tightening forces of the wedge attachment are extremely high. The wedge may reside between a bottom surface of an ear or rim of the outer wear part and a top surface of a perimeter of the bowl as a counter surface. The wedge tends to become tightly jammed. Moreover, if the outer wear part and the bowl are only attached through the wedge, the bowl may slip uncontrollably along the wedge or with the wedge. On slipping along the wedge, the wedge may tighten excessively. On slipping with the wedge, the outer wear part may start rotating with the inner wear part so that the crushing result deteriorates, and rapid wearing occurs in the bottom of the wedge and the counter surface of the bowl. SUMMARY
[0009] The appended claims define the scope of protection. Any examples and technical descriptions of apparatuses, products and / or methods in the description and / or drawings not covered by the claims are presented not as embodiments of the invention but as background art or examples useful for understanding the invention.
[0010] According to a first example aspect there is provided a wedge attachment system for attachment of an outer wear part of a cone crusher, the system comprising an arcuate wedge configured to support a lip of the outer wear part onto a rim of a bowl of the cone crusher; the wedge further comprising a laterally convex heel configured to conform with a laterally concave shoulder of the bowl; the wedge further comprising a tangentially inclined shelve configured to engage with the bottom surface of the lip of the outer wear part such that the heel has a tangentially increasing thickness defined by material residing between a bottom surface of the heel and a top surface of the shelve; the wedge further comprising a ridge; the ridge comprising a concave front face that is an upright portion configured to face a radial side of the lip; and the wedge being tangentially moveable with a changing portion of the shelve under the lip and with a changing portion of the front face facing the radial side of the lip.
[0011] The lip may reside on an outer surface of the outer wear part. The lip may reside at the top of the outer wear part. The lip may reside within 5, 10, or 20 mm from a highest part of the outer wear part, when the cone crusher is in operation.
[0012] According to a second example aspect there is provided a wedge for attachment of an outer wear part of a cone crusher, the wedge comprising an arcuate body configured to support a lip of the outer wear part onto a rim of a bowl of the cone crusher; the arcuate body comprising: a laterally convex heel configured to conform with a laterally concave shoulder of the bowl; a tangentially inclined shelve configured to engage with the bottom surface of the lip of the outer wear part such that the heel has a tangentially increasing thickness defined by material residing between a bottom surface of the heel and a top surface of the shelve; a ridge comprising a concave front face that is an upright portion configured to face a radial side of the lip; and the wedge being tangentially moveable with a changing portion of the shelve under the lip and with a changing portion of the front face facing the radial side of the lip.
[0013] The ridge may be adjoining with the heel. The ridge and the heel may be integrally formed. The entire wedge may be integrally formed.
[0014] The ridge may have a double concave shape when seen from top. The double concave shape may increase strength of the ridge on pressing the wedge in or out of its place through an end face of the ridge. The double concave may define two facing arrow shapes configured to relay force through the ridge to the heel on attaching or detaching the wedge while avoiding increase of masses. By reducing the mass of the wedge, manual handling of the wedge may be simplified.
[0015] The ridge may conveniently extend radially apart of the outer wear part for allowing use of a hydraulic ram.
[0016] The wedge may have a wedge angle. The wedge angle may be at least 1 , 2, or 3 degrees for providing sufficient elevation without an excessively long wedge that would excessively increase weight. The wedge angle may be at most 4, 5 or 6 degrees to reduce slipping tendency of the wedge and resulting force on any member that restrains slipping of the wedge during operation of the cone crusher.
[0017] The wedge may be made of steel. The wedge may be made by precision casting. The wedge may be made by lost wax casting.
[0018] The rim may face towards the outer wear part.
[0019] The ridge may comprise a rear face on a side opposite to the front face. The rear face may be convex such that the ridge is in a lateral direction thinner at a central portion than near ends of the ridge. The convex shape of the rear face may reduce weight of the wedge. The reduced weight of the wedge may help releasing of the wedge by a hammer through reducing a resulting inertia.
[0020] The wedge may have a rounded edge between the ridge and the shelve. The rounding of the edge may reduce stress concentrations and simplify manufacturing of the wedge.
[0021] The shelve may be open from a low end of the shelve so that the wedge can be slid under the lip. The shelve may have a closed end at an end of the wedge opposite to the low end of the shelve. The closed end may form a stopper. The stopper may comprise a stopper face residing in a radial plane in view of the central axis of the bowl. The stopper face may have a sharp angle with relation to the shelve. The wedge may have a rounded edge between the stopper face and the shelve.
[0022] The wedge may have a rounded edge between the ridge and the closed end.
[0023] The front face may have a circular shape with a constant distance to a central axis of the bowl, during operation of the cone crusher.
[0024] The bowl may define a conical reception space for the outerwear part. The conical reception space may have a central axis.
[0025] The heel may have a front side having a constant distance to the central axis.
[0026] The heel may have a rear side having a constant distance to the central axis. The rear side of the heel may be configured to face the shoulder of the bowl. The shoulder of the bowl may have a constant distance to the central axis.
[0027] The heel may be taller than the shoulder so that the wedge may extend beneath the shoulder. The rear face of the ridge may extend beyond the shoulder, that is, the rear face may have a greater distance to the central axis than the shoulder.
[0028] All edges of the wedge may be rounded.
[0029] The system may further comprise a plurality of the wedges.
[0030] The system may further comprise an intermediate support member. The intermediate support member may be releasably attachable onto a top surface of the bowl, e.g., by bolts or nuts.
[0031] The intermediate support member may comprise a first tangential tightening member such as a bolt. The first tangential tightening member may be configured to hold the wedge in place.
[0032] The intermediate support member may further comprise a second tangential tightening member such as a bolt. The second tangential tightening member may be configured to abut a radial protrusion of the outer wear part to prevent rotation of the outer wear part on pressing the wedge in place.
[0033] The system may further comprise one or more wedge shims configured to reside under the wedge for changing a height position of the wedge. The shims may be bolted to the bottom of the wedge.
[0034] The first tangential tightening member may set to a first height and to a second height. The first tangential tightening member may set to one or more different heights between the first height and the second height. The first tangential tightening member may set to one or more different heights according to a height position of the wedge.
[0035] The second tangential tightening member may set to a third height and to a fourth height. The second tangential tightening member may set to one or more different heights between the third height and the fourth height. The second tangential tightening member may set to one or more different heights according to a height position of the outer wear part.
[0036] The intermediate support member may comprise a base plate.
[0037] The intermediate support member may further comprise a first upright member attached at one end of the base plate. The first upright member may comprise an opening for receiving the first tangential tightening member.
[0038] The intermediate support member may further comprise a second upright member attached at one end of the base plate. The second upright member may comprise an opening for receiving the second tangential tightening member.
[0039] The system may further comprise a plurality of the intermediate support members. The system may further comprise one intermediate support member for each of at least two of the wedges.
[0040] The system may further comprise an actuator support. The actuator support may be configured to prevent excessive rotation of the outer wear part. The actuator support may be configured to provide a backing surface for a hydraulic actuator, when used for sliding the wedge out.
[0041] The actuator support may comprise a counterforce surface configured to face the bowl. The counterforce surface may be at a normal angle with relation to a force received from the hydraulic actuator on releasing the wedge. Alternatively, the counterforce surface may be at an angle greater than 90 degrees with relation to a force received from the hydraulic actuator on releasing the wedge such that the counterforce surface incurs a radial force component in the actuator support towards the outer wear part.
[0042] The actuator support may be configured to prevent excessive rotation of the outer wear part with a first anti-rotation shape that is co-operating with a second anti-rotation shape on an outer surface of the outer wear part. The first anti-rotation shape may be complimentary with the second anti-rotation shape. The first anti-rotation shape may comprise or be a recess or a protrusion. The second anti-rotation shape may comprise or be a protrusion or a recess. The protrusion may be a vertical ridge.
[0043] The actuator support may comprise a handle and / or a lifting loop. The actuator support may comprise a top plate. The top plate may be shaped to prevent the excessive rotation of the wear part. The actuator support may comprise end plates at each end of the actuator support. The end plates may be perpendicular to the top plate. The actuator support may comprise a side wall configured to extend from an outer edge of one of the end plates to an outer edge of another end plate.
[0044] The actuator support may be configured to provide an attaching backing. The attaching backing may be configured to face towards a tail end of the wedge when the wedge is being inserted between the bowl and the outer wear part. The attaching backing may be configured to support the hydraulic actuator when used to press the wedge in.
[0045] The actuator supports may be movable for detaching or attaching the wedges one by one.
[0046] The system may further comprise an actuator support restraint. The actuator support restraint may be integrally formed by the bowl. The actuator support restraint may be bolted to the bowl. The actuator support restraint may be welded to the bowl. The actuator support restraint may be configured to form lock the actuator support. The actuator support restraint may be configured to form lock the actuator support against forces induced on attaching the wedge. The actuator support restraint may be configured to form lock the actuator support against forces induced on detaching the wedge.
[0047] According to a third example aspect, there is provided a cone crusher comprising the wedge attachment system of the first example aspect; the bowl; and the outer wear part.
[0048] According to a fourth example aspect, there is provided a mobile mineral material processing plant comprising the cone crusher of the second example aspect; and a processing plant frame for supporting the cone crusher.
[0049] The mineral material processing plant may further comprise self-propelling means for moving the mineral material processing plant, such as one or more wheels, crawler tracks, and I or moving legs.
[0050] According to a fifth example aspect, there is provided a wedge attachment method, comprising supporting by an arcuate wedge a lip of an outer wear part of a cone crusher onto a rim of a bowl of the cone crusher; conforming by a laterally convex heel of the arcuate wedge with a laterally concave shoulder of the bowl; engaging the arcuate wedge by a tangentially inclined shelve with the bottom surface of the lip of the outer wear part such that the heel has a tangentially increasing thickness defined by material residing between a bottom surface of the heel and a top surface of the shelve; providing by the arcuate wedge a ridge; facing by a concave front face of the ridge a radial side of the lip; and tangentially moving the wedge with a changing portion of the shelve under the lip and with a changing portion of the front face facing the radial side of the lip.
[0051] Different non-binding example aspects and embodiments have been illustrated in the foregoing. The embodiments in the foregoing are used merely to explain selected aspects or steps that may be utilized in different implementations. Some embodiments may be presented only with reference to certain example aspects. It should be appreciated that corresponding embodiments may apply to other example aspects as well.
[0052] BRIEF DESCRIPTION OF THE FIGURES
[0053] Some example embodiments will be described with reference to the accompanying figures, in which:
[0054] Fig. 1 shows a top view of a wedge attachment system of an example embodiment for a cone crusher;
[0055] Fig. 2 shows a three-dimensional view of a wedge of Fig. 1 ;
[0056] Fig. 3 shows a section view of the wedge of Fig. 1 , and portions of an outer wear part, and of a bowl of a cone crusher;
[0057] Fig. 4 shows a three-dimensional view of an intermediate support member of Fig. 1 ;
[0058] Fig. 5 shows a three-dimensional view of an actuator support of an example embodiment;
[0059] Fig. 6 shows a partial top view illustrating use of the actuator support for wedge attaching;
[0060] Fig. 7 shows a partial top view illustrating use of the actuator support for wedge detaching; and
[0061] Fig. 8 shows a flow chart of wedge attaching according to an example embodiment.
[0062] DETAILED DESCRIPTION
[0063] In the following description, like reference signs denote like elements or steps.
[0064] Fig. 1 shows a top view of a wedge attachment system 100 further illustrated by Figs. 2 to 6 for a cone crusher, the system comprising an arcuate wedge 110 configured to support a lip 122 of an outer wear part 120 of a cone crusher onto a rim 132 of a bowl 130 of the cone crusher; the wedge 110 further comprising a laterally convex heel 210 configured to conform with a laterally concave shoulder 134 of the bowl; the wedge 110 further comprising a tangentially inclined shelve configured to engage with the bottom surface of the lip 122 of the outer wear part such that the heel has a tangentially increasing thickness defined by material residing between a bottom surface 122b of the heel and a top surface 220t of the shelve; the wedge 110 further comprising a ridge 230; the ridge 230 comprising a concave front face 230f that is an upright portion configured to face a radial side 122r of the lip; and the wedge 110 being tangentially moveable with a changing portion of the shelve 220 under the lip 122 and with a changing portion of the front face 230f of the ridge facing the radial side 122r of the lip.
[0065] The rim 132 of Fig. 1 is circular. A centre of the rim 132 defines a portion of a central axis 140 of the bowl 130. The central axis 140 continues further down in the bowl 130.
[0066] Fig. 3 shows the lip 122 residing on an outer surface of the outerwear part. In an alternative example embodiment, the lip resides at the top of the outer wear part. In an example embodiment, the lip resides within 5, 10, or 20 mm from a highest part of the outer wear part, when the cone crusher is in operation.
[0067] As shown in Fig. 2, the wedge 110 has a wedge angle with which the wedge 110 elevates a supported surface, here the lip 122 by the shelve 220 (on the top surface 220t of the shelve, see Fig. 3). In an example embodiment, the wedge angle is preferably at least 1 degree, more preferably at least 2 degrees, or even more preferably at least 3 degrees for providing sufficient elevation without an excessively long wedge that would excessively increase weight. In an example embodiment, the wedge angle is preferably at most 4 degrees, more preferably at most 5 degrees, or even more preferably at most 6 degrees to reduce slipping tendency of the wedge 110 and resulting force on any member that restrains slipping of the wedge 110 during operation of the cone crusher.
[0068] In an example embodiment, the wedge 110 is made of steel. In an example embodiment, the wedge 110 is made by precision casting. In an example embodiment, the wedge 110 is made by lost wax casting.
[0069] In Fig. 1 , the outer wear part 120 resides mostly inside the bowl 130. As seen in Fig. 3, the top of the outer wear part 120 extends above adjacent structures of the bow 130. Fig. 3 also shows that the rim 132 of the bowl faces towards the outer wear part, for supporting a support basis for the wedge 110. In an example embodiment, the rim 132 comprises an annular one-walled groove or a support ring 312 for carrying the wedge 110. Fig. 3 further shows a shim 320 attached to the bottom of the wedge 110 for increased elevation of the outer wear part. Such a stepwise further increase may become required by wear of the outer wear part necessitating a greater elevation than what would be achievable by tightening the wedge 110.
[0070] Let us turn back to the wedge 110 as shown in Fig. 2. In an example embodiment, the ridge 230 comprises a rear face 230r on a side opposite to the front face 230f. Fig. 3 shows the rear face 230r as convex such that the ridge is in a lateral direction thinner at a central portion (e.g., within five per cent of the length of the wedge 110 from the longitudinal centre thereof) than near ends of the ridge. Advantageously, forming the convex shape of the rear face reduces weight of the wedge 110. The reduced weight of the wedge 110 may contribute to reduction of a total mass of the cone crusher and I or help releasing of the wedge 110 by a hammer through reducing a resulting inertia that decreases the effect of a hammer impact.
[0071] In Fig. 2, the wedge 110 has a rounded edge between the ridge and the shelve. The rounding of the edge reduces stress concentrations and simplifies manufacturing of the wedge 110. Fig. 2 shows also other rounded edges at the end of the shelve as well at other edges, optionally all of them, such as between a radially outward surface of the heel and the bottom surface of the ridge. As an alternative for the rounding, one or more of the edges may be bevelled.
[0072] The shelve is open from a low end of the shelve, that is a leading end, so that the wedge 110 can be slid under the lip. The shelve has a closed end at the tail end of the wedge 110 opposite to the leading end of the shelve. The closed end forms a stopper. The stopper comprises a stopper face residing in a radial plane in view of the central axis 140. The stopper face has a sharp angle with relation to the shelve. The wedge 110 has a rounded edge between the stopper face and the shelve.
[0073] In an example embodiment, the front face has a circular shape with a constant distance to a central axis 140, during operation of the cone crusher.
[0074] In Fig. 1 , the bowl defines a conical reception space for the outer wear part 120.
[0075] In an example embodiment, the heel 210 has a front side having a constant distance to the central axis 140. Hence, the heel may be aligned with an edge of the rim 132, e.g., as in Fig. 3.
[0076] In an example embodiment, the heel 210 has a rear side 21 Or having a constant distance to the central axis 140. The rear side of the heel 210 is configured to face the shoulder 134 of the bowl. The shoulder 134 has a constant distance to the central axis 140. The heel 210 is preferably configured to travel on tightening along the rim 132 so that the heel 210 remains aligned with the rim 132.
[0077] The heel 210 is taller than the shoulder 134 so that the wedge 110 may extend beneath the shoulder 134. In an example embodiment, the shoulder 134 rear face 230r of the ridge 230 extends beyond the shoulder 134, that is, the rear face 230r has a greater distance to the central axis 140 than the shoulder 134.
[0078] Most or all of the edges of the wedge 110 are preferably rounded for reduction of stress concentrations, and I or facilitating mounting of the wedge 110 in place and out, and I or for simplifying manufacturing of the wedge 110.
[0079] Preferably, the system comprises a plurality of the wedges 110, such as three or more. Three wedges 110 are advantageous for tightening the outer wear part 120 to the bowl 130 stably while avoiding redundancy. Alternatively, more than three wedges 110 may be used for smaller forces per wedge 110 attachment point and increased structural redundancy to mitigate risks of mechanical fault.
[0080] In an example embodiment, the system 100 further comprises an intermediate support member 150. The intermediate support member is releasably attachable onto a top surface of the bowl, e.g., by bolts or nuts, e.g., after mounting of the wedge 110 in place.
[0081] In an example embodiment, the intermediate support member 150 comprises a first tangential tightening member such as a bolt 410. The first tangential tightening member is configured to hold the wedge 110 in place. In Fig. 4, the intermediate support member further comprises a second tangential tightening member, here another bolt 410’. The reference sign is slightly differentiated in sake of referencing. The second tangential tightening member 410’ is configured to abut a radial protrusion 170 or ear of the outer wear part 120 for preventing rotation of the outer wear part 120 on pressing the wedge 110 in place, i.e., under the lip 122. Advantageously, the second tangential tightening member 410’ may prevent or reduce the risk of uncontrolled rotation of the outer wear part 120 to a poorly tightened angle on lower portions of the shelves 220 of the wedges 110.
[0082] In an example embodiment, the system 100 further comprises one or more wedge shims 320 configured to reside under the wedge 110 for changing a height position of the wedge 110. The shims 320 may be bolted to the bottom of the wedge 110.
[0083] In an example embodiment, the first tangential tightening member 410 can be set to a first height and to a second height. In an example embodiment, the first tangential tightening member 410 can be set to one or more different heights between the first height and the second height. In an example embodiment, the first tangential tightening member 410 can be set to one or more different heights according to a height position of the wedge 110. In Fig. 4, the first tangential member 410 is made height adjustable by providing a vertical groove in which the first tangential member 410 can be suitably aligned with respect to a counter surface of the wedge 110.
[0084] In an example embodiment, the second tangential tightening member 410’ can be set to a third height and to a fourth height. In an example embodiment, the second tangential tightening member 410’ can be set to one or more different heights between the third height and the fourth height. In an example embodiment, the second tangential tightening member 410’ can be set to one or more different heights according to a height position of the outer wear part 120. In Fig. 4, the second tangential member 410’ is made height adjustable by providing a vertical groove in which the second tangential member 410’ can be suitably aligned with respect to a counter surface of the ear 170 of the outer wear part 120.
[0085] In an example embodiment, the intermediate support member 150 comprises a base plate 430. In an example embodiment, the base plate 430 is curved to conform to the outer wear part 120.
[0086] In an example embodiment, the intermediate support member 150 further comprises a first upright member 440 attached at one end of the base plate 430. In an example embodiment, the first upright member 440 comprises an opening for receiving the first tangential tightening member 410.
[0087] In an example embodiment, the intermediate support member 150 further comprises a second upright member 440’ attached at one end of the base plate 430. In an example embodiment, the second upright member 440’ comprises an opening for receiving the second tangential tightening member 410’.
[0088] In an example embodiment, the system 100 further comprises a plurality of the intermediate support members 150. In an example embodiment, the system 100 further comprise one intermediate support member 150 for each of at least two of the wedges 110.
[0089] In an example embodiment, the system 100 further comprises an actuator support 500, as exemplified by Fig. 5. The actuator support 500 is configured to prevent uncontrolled rotation of the outer wear part 120. The actuator support 500 is configured to provide a backing surface for a hydraulic actuator (not shown), when used for sliding the wedge 110 out.
[0090] The actuator support 500 comprises a counterforce surface configured to face the bowl. The counterforce surface is at a normal angle with relation to a force received from the hydraulic actuator on releasing the wedge 110. Alternatively, the counterforce surface is at an angle greater than 90 degrees with relation to a force received from the hydraulic actuator on releasing the wedge 110 such that the counterforce surface incurs a radial force component in the actuator support 500 towards the outer wear part 120.
[0091] The actuator support 500 is configured to prevent excessive rotation of the outer wear part 120 with a first anti-rotation shape that is co-operating with a second anti-rotation shape on an outer surface of the outer wear part 120. The first anti-rotation shape is complimentary with the second anti-rotation shape. The first anti-rotation shape comprises or is a recess or a protrusion. The second anti-rotation shape comprises or is a protrusion or a recess. The protrusion is a vertical ridge.
[0092] The actuator support 500 comprises a handle 540.
[0093] The actuator support 500 comprises a top plate 510. The top plate is shaped to prevent the excessive rotation of the wear part. The actuator support 500 comprises end plates 520 at each end of the actuator support 500. In an example embodiment, the end plates 520 are perpendicular to the top plate 510. The actuator support 500 comprises a side wall 530 configured to extend from an outer edge of one of the end plates 520 to an outer edge of another end plate 520.
[0094] In an example embodiment, the actuator support 500 is configured to provide an attaching backing, as exemplified by Fig. 6. The attaching backing is configured to face towards a tail end of the wedge 110 when the wedge 110 is being inserted between the bowl and the outer wear part 120. The attaching backing is configured to support a hydraulic actuator 610 (e.g., a hydraulic ram or a hydraulic jack) when used to press the wedge 110 in.
[0095] The actuator support 500 is movable for detaching or attaching the wedges 110 one by one.
[0096] Figs. 1 , 6, and 7 further illustrate an actuator support restraint 160, e.g., integrally formed by the bowl, for example, by forming a suitably shaped recess as shown in these figures. The actuator support restraint 160 basically restrains the actuator support from moving out while used to back the hydraulic actuator 410. In an example embodiment (not shown), the actuator support restraint is bolted to the bowl. In an example embodiment (not shown), the actuator support restraint is welded to the bowl. In an example embodiment, e.g., as in Figs. 1 , 6, and 7, the actuator support restraint is configured to form lock the actuator support 500.
[0097] In an example embodiment exemplified by Fig. 7, the actuator support restraint 160 is configured to form lock the actuator support 500 against forces induced on attaching the wedge 110. In an example embodiment, the actuator support restraint 160 is configured to form lock the actuator support 500 against forces induced on detaching the wedge 110.
[0098] Fig. 8 shows a flow chart of wedge attaching according to an example embodiment, comprising
[0099] 810. Supporting by an arcuate wedge a lip of an outer wear part 120 of a cone crusher onto a rim of a bowl of the cone crusher.
[0100] 820. Conforming by a laterally convex heel of the arcuate wedge with a laterally concave shoulder of the bowl.
[0101] 830. Engaging the arcuate wedge by a tangentially inclined shelve with the bottom surface of the lip of the outerwear part 120 such that the heel has a tangentially increasing thickness defined by material residing between a bottom surface of the heel and a top surface of the shelve.
[0102] 840. Providing by the arcuate wedge a ridge.
[0103] 850. Facing by a concave front face of the ridge a radial side of the lip.
[0104] 860. Tangentially moving the wedge with a changing portion of the shelve under the lip and with a changing portion of the front face facing the radial side of the lip.
[0105] Various embodiments have been presented. It should be appreciated that in this document, words comprise; include; and contain are each used as open-ended expressions with no intended exclusivity.
[0106] The foregoing description has provided by way of non-limiting examples of particular implementations and embodiments a full and informative description of the best mode presently contemplated by the inventors for carrying out the invention. It is however clear to a person skilled in the art that the invention is not restricted to details of the embodiments presented in the foregoing, but that it can be implemented in other embodiments using equivalent means or in different combinations of embodiments without deviating from the characteristics of the invention.
[0107] Furthermore, some of the features of the afore-disclosed example embodiments may be used to advantage without the corresponding use of other features. As such, the foregoing description shall be considered as merely illustrative of the principles of the present invention, and not in limitation thereof. Hence, the scope of the invention is only restricted by the appended patent claims.
Claims
CLAIMS1. A wedge attachment system for attachment of an outer wear part (120) of a cone crusher, the system comprising an arcuate wedge (110) configured to support a lip (122) of the outer wear (120) part onto a rim (312) of a bowl (130) of the cone crusher; the wedge (110) further comprising a laterally convex heel (210) configured to conform with a laterally concave shoulder (134) of the bowl (130); the wedge (110) further comprising a tangentially inclined shelve (220) configured to engage with the bottom surface (122b) of the lip (122) of the outer wear part (120) such that the heel (210) has a tangentially increasing thickness defined by material residing between a bottom surface of the heel (210) and a top surface of the shelve (220); the wedge (110) further comprising a ridge (230); the ridge (230) comprising a concave front face (230f) that is an upright portion configured to face a radial side (122r) of the lip (122); and the wedge (110) being tangentially moveable with a changing portion of the shelve (220) under the lip (122) and with a changing portion of the front face (230f) facing the radial side (122r) of the lip (122).
2. The wedge attachment system of claim 1 , wherein the system further comprises an intermediate support member (150); the intermediate support member (150) is releasably attachable onto a top surface of the bowl (130); and the intermediate support member (150) comprises a first tangential tightening member (410) configured to hold the wedge (110) in place.
3. The wedge attachment system of claim 2, wherein the intermediate support member (150) further comprises a second tangential tightening member (410’) configured to abut a radial protrusion (170) of the outer wear part (120) to prevent rotation of the outer wear part (120) on pressing the wedge (110) in place.
4. The wedge attachment system of any one of preceding claims, wherein the system furthers comprises an actuator support (500); and the actuator support (500) is configured to prevent excessive rotation of the outer wear part (120) and I or to provide a backing surface for a hydraulic actuator, when used for sliding the wedge (110) out.
5. The wedge attachment system of claim 4, wherein the actuator support (500) comprises a counterforce surface configured to face the bowl (130).
6. The wedge attachment system of any one of preceding claims, wherein the actuator support is configured to prevent excessive rotation of the outer wear part (120) with a first anti-rotation shape that is co-operating with a second anti-rotation shape on an outer surface of the outer wear part (120).
7. A wedge (110) for attachment of an outer wear part (120) of a cone crusher, the wedge comprising an arcuate body configured to support a lip (122) of the outer wear part (120) onto a rim (312) of a bowl (130) of the cone crusher; the arcuate body comprising: a laterally convex heel (210) configured to conform with a laterally concave shoulder (134) of the bowl (130); a tangentially inclined shelve (220) configured to engage with the bottom surface (122b) of the lip (122) of the outerwear part (120) such that the heel (210) has a tangentially increasing thickness defined by material residing between a bottom surface of the heel (210) and a top surface of the shelve (220); a ridge (230) comprising a concave front face (230f) that is an upright portion configured to face a radial side (122r) of the lip (122); and the wedge (110) being tangentially moveable with a changing portion of the shelve (220) under the lip (122) and with a changing portion of the front face (230f) facing the radial side (122r) of the lip (122).
8. The wedge attachment system of any one of claims 1 to 6 or the wedge (110) of claim 7, wherein the wedge (110) has a wedge angle that is at least 1 , 2, or 3 degrees and I or at most 4, 5 or 6 degrees.
9. The wedge attachment system of any one of claims 1 to 6 or the wedge (110) of claim 7, wherein the wedge (110) has a rounded edge between the ridge (230) and the shelve (220).
10. The wedge attachment system of any one of claims 1 to 6 or the wedge (110) of any one of claims 7 to 9, wherein the front face (230f) has a circular shape with a constant distance to a central axis (140) of the bowl (130), during operation of the cone crusher.11 . The wedge attachment system of any one of claims 1 to 6 or the wedge (110) of any one of claims 7 to 10, wherein the heel (210) has a front side having a constant distance to the central axis (140).
12. The wedge attachment system of any one of claims 1 to 6 or the wedge (110) of any one of claim 7 to 11 , wherein the heel (210) has a rear side (21 Or) having a constant distanceto the central axis (140).
13. The wedge attachment system of any one of claims 1 to 6 or the wedge (110) of any one of claim 7 to 11 , wherein the heel (210) has a rear side (21 Or) having a constant distance to the central axis (140); the rear side (21 Or) of the heel (210) is configured to face the shoulder (134) of the bowl (130); and the shoulder (134) of the bowl (130) has a constant distance to the central axis (140).
14. A cone crusher comprising the wedge attachment system of any one of preceding claims; the bowl (130); and the outer wear part (120).
15. A wedge attachment method, comprising supporting (810) by an arcuate wedge (110) a lip (122) of an outer wear part (120) of a cone crusher onto a rim of a bowl (130) of the cone crusher; conforming (820) by a laterally convex heel (210) of the arcuate wedge (110) with a laterally concave shoulder (134) of the bowl (130); engaging (830) the arcuate wedge (110) by a tangentially inclined shelve (220) with the bottom surface (122b) of the lip (122) of the outer wear part (120) such that the heel (210) has a tangentially increasing thickness defined by material residing between a bottom surface of the heel (210) and a top surface of the shelve (220); providing (840) by the arcuate wedge (110) a ridge (230); facing (850) by a concave front face (230f) of the ridge (230) a radial side (122r) of the lip (122); and tangentially moving (860) the wedge (110) with a changing portion of the shelve (220) under the lip (122) and with a changing portion of the front face (230f) facing the radial side (122r) of the lip (122).