Rotary crusher with self-aligning spindle and its assembly method

Abstract

This disclosure relates to novel components of a rotary crusher (1) aimed at facilitating self-alignment of the main shaft assembly (2) during its introduction into the rotary crusher (1) by lowering the main shaft assembly (2) from above into the rotary crusher (1). The novel component may include a dust cover (9) with a plurality of guides (15), an end plate (32) with a lower alignment ramp (36), and / or a counterweight (13) with an alignment ramp (41). Each novel component may be configured to bias the lower main shaft (26) of the main shaft assembly (2) of the rotary crusher (1) to concentric alignment with a bore (56) of an eccentric device (11) or an eccentric bushing (12).

Description

Technical Field

[0001] This application relates to crushers, and more particularly to rotary crushers. More specifically, this application relates to a method of assembling a rotary crusher, including introducing a main shaft assembly into the crusher. Background Technology

[0002] A rotary crusher includes a main shaft assembly housed within a bushed eccentric assembly. During routine maintenance of this type of crusher, the main shaft assembly needs to be periodically removed to access internal components, for repair of the main shaft assembly, or for maintenance of other parts within the crusher.

[0003] Aligning the spindle assembly when reintroducing it into the rotary crusher presents challenges. This is partly because the axis of rotation of the spindle and the axis of rotation of the eccentric bushing are not parallel. Instead, these lines intersect at a so-called "pivot point," which is typically located above the crushing surface.

[0004] When performed according to a specific procedure, existing methods for removing the spindle assembly generally do not involve much risk of personal injury. However, current methods for reinstalling the spindle assembly back into the rotary crusher pose a significant risk of injury—because the operator must work below the suspended spindle assembly (which can weigh up to 100 tons) to guide the spindle into place and prevent damage to the seals.

[0005] In traditional spindle installation, workers manually guide the spindle assembly into the offset / unbalanced eccentric bushing. In some rotary crushers, when working below the spindle assembly, workers may also have to manually guide the seals located on the spindle into the sealing sleeve bore.

[0006] Any malfunction of the lifting equipment, crane, cable, or hook, or improper operation of the crane, can cause serious or fatal injury to the operators below. There is also a risk of pinching during the process.

[0007] Therefore, it is desirable to install the spindle assembly in a manner that minimizes risks to operators. In particular, it is necessary to avoid the need to place maintenance personnel under the spindle assembly in order to guide the distal end of the spindle assembly into the eccentric device. It is also necessary to avoid the requirement for manual intervention to ensure that the seals are not damaged (e.g., bent, folded, jammed, blocked, impacted) when the spindle assembly is introduced into the rotary crusher. Summary of the Invention

[0008] Therefore, the purpose of this invention is to avoid the aforementioned dangers associated with existing rotary crusher equipment.

[0009] Another objective of the embodiments is to provide a safer method for installing the spindle assembly into a rotary crusher by providing a self-aligning device, thereby minimizing human exposure to hazards and unnecessary risks.

[0010] Another objective of the embodiments is to provide a quick, economical and efficient way to introduce the distal end of the spindle assembly into a bushed eccentric device.

[0011] This and other objects of the invention will be apparent from the accompanying drawings and description herein. Although each object of the invention is considered to be achieved by means of at least one embodiment of the invention, it is not necessarily true that any single embodiment of the invention achieves all the objects of the invention.

[0012] An annular dust cover (9) for a rotary crusher (1) is disclosed. The dust cover (9) can be configured to facilitate alignment between the main shaft assembly (2) and the bore (56) of the eccentric device (11) or eccentric bushing (12) when the main shaft assembly (2) is introduced into the rotary crusher (1); for example, by lowering the main shaft assembly (2) into the rotary crusher (1) from above. The dust cover (9) may include an inner wall (22) configured to receive a lower main shaft (26) of the main shaft assembly (2) passing therethrough and an outer wall (52) configured to engage an annular dust seal (10) disposed within the main shaft assembly (2).

[0013] The dust cover (9) may include a plurality of guides (15) arranged radially inward relative to the inner sidewall (22). Each of the plurality of guides (15) may have a guide surface (15') configured to contact the spindle assembly (2). The guide surface (15') may form an angle (58) relative to the inner sidewall (22) such that the lower portion of each guide surface (15') may be positioned radially inward relative to the inner sidewall (22) than the corresponding upper portion of each guide surface (15'). The guides (15) may be arranged together and / or configured to bias the lower spindle (26) concentrically aligned with the bore (56); for example, when the spindle assembly (2) is lowered into the rotary crusher (1), but not limited thereto.

[0014] In some embodiments, the dust cover (9) may include a plurality of guide seats (14) disposed on the inner sidewall (22). Each guide seat (14) may be configured to support a corresponding one of the guides (15); for example at least in the radial direction, but not limited thereto.

[0015] According to some embodiments, each guide seat (14) may extend radially inward from the inner sidewall (22), but is not limited thereto.

[0016] According to some embodiments, each guide (15) may be removably secured to one of the guide seats (14). For example, one or more fasteners (16, 24) may extend through one or more holes (16, 17) of each guide (15) and into its respective guide seat (14), but are not limited thereto.

[0017] According to some embodiments, each guide seat (14) may include an inclined bottom surface (20). The inclined bottom surface (20) may be configured to support a corresponding one of its guide members (15), but is not limited thereto.

[0018] According to some embodiments, each guide seat (14) may include a side rail (21). The side rail (21) may project radially inward beyond the inclined bottom surface (20), but is not limited thereto.

[0019] According to some embodiments, the side rail (21) may be configured to provide lateral support for the guide (15). The side rail (21) may alternatively or additionally facilitate, but is not limited to, the positioning of the guide (15) relative to its corresponding guide seat (14). The side rail (21) may include one or more side holes (19) for receiving side pins (24) or other fasteners or securing devices to secure the guide (15) to the guide seat (14), but is not limited to this.

[0020] According to some embodiments, the dust cover may include a lower sidewall (23). The lower sidewall may extend radially inward relative to the inner sidewall (22). The lower sidewall (23) may form an inner annular lip or inner annular flange near the lower part of the dust cover (9). According to some embodiments, the guide seat (14) may typically be configured as a triangular prism or a gusset plate, but is not limited thereto.

[0021] According to some embodiments, the inclined bottom surface (20) may extend at an angle (58) between the inner sidewall (22) and the lower sidewall (23) relative to the inner sidewall (22), but is not limited thereto.

[0022] According to some embodiments, the dust cover (9) may include an annular upper radially outward bevel (49). The upper radially outward bevel (49) may be located near the upper edge of the dust cover (9), but is not limited thereto. The upper radially outward bevel (49) may be configured to engage a complementary annular lower radially inward bevel (50) of the dust seal (10), but is not limited thereto. The upper radially outward bevel (49) may be configured to bias the dust seal (10) to be concentrically aligned with the dust cover (9). The upper radially outward bevel (49) may be configured to guide the dust seal (10) on the outer surface (52) of the dust cover (9) when the spindle assembly (2) descends into the rotary crusher (1), but is not limited thereto.

[0023] According to some embodiments, the guide (15) may be configured to bias the lower spindle (26) concentrically aligned with one or more annular oil seals (53); for example, one or more annular oil seals 53 may be located below the guide 15. This may be achieved, for example, by sliding contact with the lower spindle (26) as the spindle assembly (2) descends into the rotary crusher (1) (e.g., sliding contact between the guide surface 15' and the outer surface of the spindle (26)—including the surface of the end plate (32) disposed thereto), but is not limited thereto.

[0024] An end plate (32) for mounting to the lower distal end of the main shaft assembly (2) of a rotary crusher (1) is also disclosed. The end plate (32) may include a lower side and an upper side. The lower side may be configured to rest on a thrust bearing (48) (e.g., above a hydraulic cylinder (59), but is not limited thereto). The upper side of the end plate (32) may be configured to be received in a recess (46) (e.g., in the lower main shaft (26) of the main shaft assembly (2), but is not limited thereto. The recess (46) may be defined by a bottom surface (29) of the lower main shaft (26), which may be surrounded by a lower annular protrusion (28) of the lower main shaft (26), but is not limited thereto.

[0025] The end plate (32) can be configured to bias the lower spindle (26) of the spindle assembly (2) to be concentrically aligned with the bore (56) of the eccentric device (11) or eccentric bushing (12); for example, when the spindle assembly (2) is introduced into the rotary crusher (1) by lowering it from above into the rotary crusher (1). This can be achieved, for example, by providing a lower alignment ramp (36) to the end plate (32) at its radial outermost periphery. The lower alignment ramp (36) can be configured to work in conjunction with, but is not limited to, the guide surface (15') of the guide (15).

[0026] According to some embodiments, the end plate (32) may be configured to bias the lower spindle (26) of the spindle assembly (2) to be concentrically aligned with one or more annular oil seals (53) configured to surround the lower spindle (26) of the spindle assembly (2); for example when the spindle assembly (2) is introduced into the rotary crusher (1) by lowering the spindle assembly (2) from above the rotary crusher (1), but not limited thereto.

[0027] According to some embodiments, the lower alignment ramp (36) can be configured to smoothly transition to the lower alignment ramp (27), which can be located near the lower annular protrusion (28) of the lower spindle (26).

[0028] According to some embodiments, the end plate (32) may include an upper annular lip (38). The upper annular lip (38) may surround an upper protrusion (45) disposed on the end plate (32). The upper annular lip (38) may be configured to abut against the lower surface of a lower annular protrusion (28) of the spindle assembly (2), but is not limited thereto.

[0029] According to some embodiments, the upper protrusion (45) may be configured to be received in a recess (46) provided in the lower spindle (26), but is not limited thereto.

[0030] According to some embodiments, the upper surface of the upper protrusion (45) may be configured to abut against the bottom surface (29) of the lower spindle (26), but is not limited thereto.

[0031] According to some embodiments, the upper annular lip (38) may intersect with the lower annular ramp (36) to form a top annular edge (60); for example, at the widest part of the end plate (32), but not limited thereto.

[0032] According to some embodiments, the lower alignment bevel (36) may be configured to merge with, but is not limited to, a lower alignment bevel (27) disposed near the lower annular protrusion (28) of the lower spindle (26). The two lower alignment bevels (36, 37) may be combined such that the lower alignment bevel (36) of the end plate (32) is flush with the lower alignment bevel (27), but is not limited to this. The two lower alignment bevels (36, 37) may be combined such that the lower alignment bevel (36) and the lower alignment bevel (27) share the same (or similar) taper angle, but is not limited to this.

[0033] A counterweight (13) for a rotary crusher (1) is also disclosed. The counterweight may be adapted to be disposed on the upper part of an eccentric device (11) and / or an eccentric bushing (12) within the rotary crusher (1). The counterweight (13) may have an upper side and a lower side. According to some embodiments, the counterweight (13) may include a distinctive C-shaped bow profile with two ends. The counterweight (13) may also include a concave alignment ramp (41).

[0034] The alignment ramp (41) may be defined by an upward-facing and radially inward-facing (relative to the C-shaped bow profile, the eccentric device (11), and / or the bushing (12)) inclined surface. The inclined surface defining the alignment ramp (41) may extend between the upper and lower sides of the counterweight. The inclined surface may extend between the two ends of the C-shaped bow profile. Therefore, the upper width of the counterweight (13) may be narrower than the lower width, but is not limited thereto.

[0035] According to some embodiments, the alignment ramp (41) may be configured to bias the lower main shaft (26) of the main shaft assembly (2) of the rotary crusher (1) to be concentrically aligned with the hole (56) of the eccentric device (11) or eccentric bushing (12) to which it is disposed; for example when the main shaft assembly (2) is introduced into the rotary crusher (1) by lowering the main shaft assembly (2) from above the rotary crusher (1) into the rotary crusher (1), but is not limited thereto.

[0036] According to some embodiments, the counterweight (13) may include a protrusion (42) located on the underside of the counterweight (13), but is not limited thereto.

[0037] According to some embodiments, the counterweight (13) may include a mounting hole (43). The mounting hole (43) may extend through the counterweight (13) and be configured to secure the counterweight (13) to the eccentric device (11) and / or the eccentric bushing (12), but is not limited thereto. For example, the mounting hole (43) may be configured to secure the counterweight (13) to the upper part of the eccentric device (11) and / or the eccentric bushing (12).

[0038] According to some embodiments, at least one of the mounting holes (43) may pass through one of the protrusions (42), but is not limited thereto. In some embodiments, all mounting holes (43) may pass through the respective protrusions (42), but is not limited thereto.

[0039] The rotary crusher (1) can benefit from the above-described apparatus. For example, according to some embodiments, the rotary crusher (1) may include the dust cover (9), the end plate (32), or the counterweight (13) described above. In some embodiments, the rotary crusher (1) may include the dust cover (9) combined with the end plate (32) or the counterweight (13). In some embodiments, the rotary crusher (1) may include the end plate (32) and the counterweight (13) described above. In some embodiments, all three of the dust cover (9), end plate (32), and counterweight (13) described above may be provided to the rotary crusher, but are not limited thereto. Attached Figure Description

[0040] To supplement the description and to aid in a better understanding of the features of the invention, a set of drawings illustrating new and novel methods and apparatuses for assisting self-centering and alignment during the installation of the spindle assembly 2 are included as part of this specification, wherein the following description is given in an illustrative and non-limiting manner. It should be understood that the same reference numerals used in the drawings (if applicable) may identify the same parts.

[0041] Figure 1 A novel and inventive rotary crusher 1 is shown according to some exemplary, non-limiting embodiments.

[0042] Figure 2 It shows Figure 1 The side sectional view of the rotary crusher 1 shown.

[0043] Figure 3 It shows Figure 1 The magnified portion shows more clearly the area near the dust seal 10 and dust cover 9 of the rotary crusher 1.

[0044] Figure 4 A partial isometric sectional view is shown (with the main shaft assembly 2 removed), which more clearly shows the novel dust cover 9 and novel counterweight 13 of the rotary crusher 1.

[0045] Figure 5 It shows Figure 4 The dust cover 9 shown has a removable guide 15 that is removed from the guide seat 14.

[0046] Figure 6 An exploded view is shown, illustrating how the replaceable guide 15 is positioned onto the guide seat 14 on the dust cover 9 according to some non-limiting embodiments.

[0047] Figure 7 The assembly to Figure 4-6 A close-up view of the guide member 15 on the guide seat 14 of the dust cover 9 shown.

[0048] Figure 8 It shows Figure 1 The enlarged portion shows more clearly the area adjacent to the lower distal portion of the spindle assembly 2, which has a novel end plate 32 and centering features 27, 36.

[0049] Figure 9 A non-limiting exemplary embodiment of spindle assembly 2 is shown, which can be disposed to Figure 1 and 2 The rotary crusher 1 shown.

[0050] Figure 10 The distal portion of the spindle assembly 2 is shown, particularly the lower spindle 26, which has means for receiving the end plate 32 according to some non-limiting embodiments.

[0051] Figure 11 This is a lower isometric view of a novel endplate 32 according to some non-limiting embodiments, which can be disposed to Figure 10 The lower spindle 26 is shown.

[0052] Figure 12 yes Figure 11 The upper isometric view of the end plate 32 shown.

[0053] Figure 13 The installation is shown in a cross-sectional view. Figure 10 On the lower spindle 26 Figure 11 and 12 End plate 32.

[0054] Figures 14-16 of the prior art show a conventional cylindrical end plate, including an oil trough arranged in a conventional "rose" pattern.

[0055] Figure 17 A novel counterweight 13 according to some non-limiting embodiments is shown, which has a special ramp 41 at its mounting position relative to the bore 56 or inner diameter 57 of the eccentric device 11 or its bushing 12.

[0056] Figure 18 It shows Figure 17 Top isometric view of counterweight 13 shown.

[0057] Figure 19 It shows Figure 17 and 18 Isometric view of the bottom of counterweight 13 shown.

[0058] Figure 20 and 21 First and second method steps for introducing the spindle assembly 2 into the dust cover 9 of the rotary crusher 1 according to a non-limiting embodiment are shown respectively.

[0059] The invention will be described in more detail below with reference to the accompanying drawings and exemplary embodiments. Detailed Implementation

[0060] Although the invention has been described herein with reference to exemplary embodiments of the rotary crusher 1 and its assembly method, it should be understood that many variations and modifications will be apparent to those skilled in the art in light of the teachings provided herein.

[0061] The detailed embodiments shown and described in the text and accompanying drawings should not be construed as limiting the scope; rather, all provided embodiments should be considered exemplary in nature. Therefore, the invention is limited only by the appended claims.

[0062] The inventors have recognized a novel, previously unrecognized rotary crusher 1, which includes, but is not limited to, features configured to aid in the centering of the main shaft assembly 2 upon its introduction. For example, the novel features described herein are configured to facilitate self-centering and / or self-alignment, but are not limited to, as a portion of the main shaft assembly 2 (e.g., the lower main shaft 26) is lowered into the bushing 12 of the eccentric device 11.

[0063] When components of the rotary crusher 1 wear out (including but not limited to the eccentric bushing 12, outer cover 7, dust seal 10, lower main shaft 26, concave surface 8, or other components), the support 6 can be removed from the rotary crusher 1, and the main shaft assembly 2 can be lifted from the rotary crusher 1 and removed using an overhead crane. The main shaft assembly 2 may need to be completely removed from the rotary crusher 1 to replace the outer cover 7, or to be accessed to replace the worn portion of the concave surface 8.

[0064] Turn now Figure 1 and 2 According to an embodiment, the rotary crusher 1 includes a main shaft assembly 2. The main shaft assembly 2 includes an outer cover 7 (e.g., an outer crushing surface bushing), a lower main shaft 26 adjacent to its lower distal portion, and a lifting hook 47 adjacent to its upper proximal portion.

[0065] The rotary crusher 1 may also include a main frame, which may include, but is not limited to, a lower top shell 3, a bottom shell 4, and a top shell 5. Any two or more of the shell portions 3, 4, and 5 may be integrally formed with each other, but is not limited to. As shown, a leg 6 may span the top opening. A recess 8 (e.g., an internal crushing surface bushing) may protect the interior of the main frame. The main shaft assembly 2 may be housed within the bushing 12 of the eccentric device 11. An annular dust cover 9 may be disposed around the main shaft assembly 2, and an annular dust seal 10 may be disposed around the outer surface of the dust cover 9. A counterweight 13 may be fixed to the upper part of the eccentric device 11 and / or the eccentric bushing 12. As shown, the counterweight 13 may include a non-annular arcuate shape (e.g., a "C" shape), but is not limited to.

[0066] like Figure 3-7 As shown, the rotary crusher 1 differs from a conventional rotary crusher in that its dust cover 8 may include multiple guide seats 14 disposed on the inner wall 22 of the dust cover 9. As shown, the guide seats 14 may extend at an angle between the inner wall 22 and the lower wall 23 of the dust cover 9. The lower wall 23 may extend radially inward (e.g., perpendicular to the inner wall 22 when viewed in cross-section). The lower wall 23 may form a radially inwardly extending support, lip, or flange, but is not limited to these.

[0067] like Figure 3As shown, the upper peripheral region of the dust cover 9 may include an upper radially outward bevel 49 configured at an angle that engages with a lower radially inward bevel 50 of the dust seal 10, which is disposed within the spindle assembly 2 and held in place by the dust seal cap 51. During reinstallation of the spindle assembly 2, as the spindle assembly 2 descends into place, the upper radially outward bevel 49 on the dust cover 9 engages with the lower radially inward bevel 50 of the dust seal 10. The surfaces of the two bevels 49, 50 engage and serve as inclined ramps to provide mechanical advantages in widening / radially expanding the annular dust seal 10 and / or guiding the inner surface of the dust seal 10 around the outer peripheral surface 52 of the dust cover 9. Figure 3 The position of the spindle assembly 2 is shown, in which the dust seal 10 has slid over the upper radially outer bevel 49 and over most of the outer peripheral surface 52 of the dust cover 9.

[0068] The guide seat 14 may be configured to have an integrally formed guide surface, or, as shown, may be configured to receive one or more separable guide elements 15. Each guide element 15 may include, for example, a replaceable wear surface or bushing, but is not limited thereto. The guide element 15 may include a support material, such as bronze or polymer, but is not limited thereto.

[0069] In the specific exemplary, non-limiting embodiments shown (from...) Figure 6 (Most clearly shown) Each guide seat 14 may be provided with a sloping bottom surface 20, such as a ramp structure. The sloping bottom surface 20 itself may be a guide surface configured and intended to slide against, but is not limited to, the end plate 32 or other parts of the spindle assembly 2 (e.g., the outer diameter or outer peripheral surface of the lower spindle 26). However, as shown, replaceable / separable guides 15 may be secured to the sloping bottom surface 20 using one or more fasteners 25 (e.g., machine screws, bolts), but is not limited to. It should be understood that permanent or semi-permanent attachment methods (e.g., brazing, welding, bonding) may be used to secure the guides 15 to the guide seats 14, but are not limited to.

[0070] To better support the guide 15 and protect it from lateral forces and / or side loads (e.g., tangential forces within the dust cover 9) generated during the insertion of the spindle assembly 2, as shown, one or more side rails 21 extending from the inclined bottom surface 20 may be provided on either side or both sides of the guide 15. The side rails 21 may project radially inward from the guide seat 14 relative to the dust cover 9 and may extend at an angle along the guide seat 14 between the inner sidewall 22 and the lower sidewall 23. The side rails 21 may extend substantially perpendicularly from the inclined bottom surface 20, but are not limited to this.

[0071] Each guide 15 may include one or more holes 16 (e.g., one or more countersunk recesses) for receiving one or more corresponding fasteners 25, as shown. The size and shape of the holes 16 described herein may complementarily accommodate the head of the fastener 25, and / or be configured such that the fastener 25 does not protrude beyond the outer guide surface of the guide 15, but are not limited thereto.

[0072] As shown, one or more side holes 17 may be provided transversely to the separable or integral guide 15, and these side holes may be used to receive one or more corresponding side pins 24 for temporarily or permanently securing the guide 15 to the guide seat 14, but are not limited thereto. As shown, the side pins 24 may extend entirely through the guide seat 14 or partially into each guide 15. The side pins 24 may include, but are not limited to, rollers, screws, or other types of fasteners that are pressed in or otherwise received by the side rails 21 and the guide 15. The guide seat 14 may also include one or more side holes 19 to receive the side pins 24, as shown, but are not limited thereto. As shown in a particular embodiment, the side pins 24 may intersect with holes 16 to serve as locating screws abutting against the fasteners 25, or other locking features, but are not limited thereto. As shown, the side pins 24 may extend through the side rails 21.

[0073] One or more mounting holes 18 may be provided to each guide seat 14 for receiving fasteners 25 (e.g., fasteners 25 that extend through the guide 15 and are received within the hole 16).

[0074] Now go to Figure 8 The distal portion of the spindle assembly 2 can be configured to rest on the thrust bearing 48, and the lower spindle 26 can be configured to be housed within the bushed eccentric device 11.

[0075] like Figure 9-13 As shown, the rotary crusher 1 differs from a conventional rotary crusher in that the lower main shaft 26 of the main shaft assembly 2 may include a specially configured end plate 32. In some embodiments, as shown, the lower main shaft 26 may include a recess 46 at its distal end. Figure 10 The recess 46 may be defined by, for example, a bottom surface 29 surrounded by a lower annular protrusion 28, but is not limited thereto. As shown, the lower annular protrusion 28 may be continuous; however, it may include interruptions (e.g., to form a toothed or partially toothed shape, a wavy shape, a fan shape, etc.), but is not limited thereto. Figure 13As shown, the lower annular protrusion 28 may be configured to engage and / or abut against the upper annular lip 38 on the upper side of the adjacent end plate 32. The surface of the lower annular protrusion 28 may closely abut against complementary surfaces and / or geometric features of the lower annular protrusion 28, but is not limited thereto. The upper annular lip 38 of the end plate 32 may define or surround the upper protrusion 45, which is configured to extend into the recess 46 of the lower spindle 26, but is not limited thereto. The upper protrusion 45 may project upward from the upper annular lip 38 and may be arranged centered and / or concentrically relative to it, as shown.

[0076] The underside of the end plate 32 may include, but is not limited to, multiple radial oil grooves 33 and / or one or more annular oil grooves 34 disposed on its bottom surface. The oil grooves 33 and 34 help retain and guide oil between the end plate 32 and the thrust bearing 48, thereby aiding lubrication. The radial oil grooves 33 may be interrupted along a radial line as shown, thereby forming multiple staggered arcuate protrusions 55. The staggered arcuate protrusions 55 can form a circular mosaic pattern as shown. The radial oil grooves 33 and annular oil grooves 34 may connect to each other, so that they together form a tortuous path for oil flow, thereby improving the "rose" pattern shown in Figures 14-16.

[0077] A central recess 35 can be provided on the underside of the end plate 32 to accommodate a fastener 30 for securing the end plate 32 to the lower spindle 26. However, it is conceivable that, in order to provide a means for securing the end plate 32 to the lower spindle 26, spaced recess patterns (centered or non-centered) can be provided and arranged within the end plate 32.

[0078] As shown in the specific non-limiting embodiment illustrated, fastener 30 may include, but is not limited to, bolts or threaded pins. Figure 13 As shown, the fastener 30 can be received through an opening or mounting hole 39 in the end plate 32 and screwed, welded, or otherwise mounted in a hole 37 in the lower spindle 26, but is not limited thereto. The hole 37 can be centrally located within a recess defined by the bottom surface 29 and the lower annular protrusion 28. The fastener 30 can include, but is not limited to, a protrusion integral with and machined into the lower spindle 26. The fastening nut or bolt head 31 can be located within a central recess 35 in the end plate 32, thereby avoiding collision with the thrust bearing 48 supporting the underside of the end plate 32.

[0079] Another feature that can be used for end plate 32 is a lower alignment bevel 36 (e.g., a truncated cone or guide surface). As shown, the lower alignment bevel 36 can match the cone angle of the upper alignment bevel 27 of the lower annular protrusion 28. As shown, the lower annular edge of the upper alignment bevel 27 can abut or contact the upper annular edge of the upper annular lip 38. The surfaces of the upper alignment bevel 27 and the lower alignment bevel 36 can be flush with each other, continuous together, or generally follow the same outer bevel cone angle, thereby creating a smooth and uniform transition between the lower spindle 26 and end plate 32.

[0080] To prevent relative movement between the end plate 32 and the lower spindle 26, the mating surfaces between the upper annular lip 38 and the lower annular protrusion 28 can be interlocked (e.g., wavy, fan-shaped), but are not limited thereto. Furthermore, the outer surface of the upper protrusion 45 and the inner surface of the lower annular protrusion 28 can be complementary spline surfaces, but are not limited thereto. However, as shown, in some embodiments, rotation of the end plate 32 relative to the lower spindle 26 can be prevented or stopped by providing one or more locating pins 44 on the bottom surface 29, which extend into the corresponding alignment holes 40. In this respect, rotation of the upper protrusion 45 within the lower annular protrusion 28 during operation can be prevented, which would cause the fasteners 30, 31 attaching the end plate 32 to the lower spindle 26 to loosen.

[0081] Figures 14-16 illustrate a conventional end plate (according to the prior art), to which end plate 32 is intended as an improvement. As can be seen from these figures, the conventional end plate comprises a cylindrical body with rose-patterned oil grooves on its lower surface. The outer peripheral cylindrical surface is radially inserted inward from other surfaces at the distal end of the lower spindle. Clearly, this conventional design lacks the aforementioned novel and useful features of the end plate 32 according to an embodiment of the present invention.

[0082] Now go to Figure 17-19 Another novel feature of the rotary crusher 1 is that it provides an alignment ramp 41 for the counterweight 13, which is used to attach to the upper part of the eccentric device 11 and / or its bushing 12. As shown, the counterweight may include, but is not limited to, a non-circular arcuate shape (e.g., a "C" shape).

[0083] As shown in the figure, the inclined surface 41 can be set to the concave part of the counterweight, so that the width of the counterweight 13 at the upper part of the adjacent counterweight 13 is usually narrower, while the width at the lower part of the adjacent counterweight 13 is usually wider.

[0084] In some embodiments, a plurality of protrusions 42 may be disposed on the lower surface of the counterweight 13. Figure 19 These protrusions 42 can be used as centering features, but are not limited to this. For example... Figure 17As shown, the protrusion 42 may be located in a spacer between the eccentric device 11 and the inner bushing 12. A mounting hole 43 (which may be a countersunk hole as shown) may be provided through the counterweight 13. In some embodiments, such as the one shown, the mounting hole 43 may extend into, interrupt, or intersect the alignment bevel 41. The mounting hole 43 may also extend through the protrusion 42, for example, to increase the engagement length between the fastener and the mounting hole 43. The mounting hole 43 allows a fastener (not shown) to pass through the counterweight and into a portion of the eccentric device 11 and / or bushing 12 to secure the counterweight 13 thereto.

[0085] Now go to Figure 20-21 As the main shaft assembly 2 descends into the rotary crusher 1 during reintroduction or reassembly, the guide 15 helps to "roughly center" the lower main shaft 26, aligning it with the oil seal 52 and / or the eccentric device 11. A smooth guide cone formed by the flush lower alignment ramps 27 and 36 is presented to the oil seal 53 to allow for a more "precise alignment" of the lower main shaft 26 with the oil seal 53 and / or the eccentric device 11. As the main shaft assembly 2 descends further into the rotary crusher 1, the oil seal 53 can be guided around the outer circumferential surface (i.e., outer diameter) of the lower main shaft 26.

[0086] As the spindle assembly 2 descends further, a smooth guide cone formed by the flush lower alignment ramps 27 and 36 then appears on the alignment ramp 41 of the counterweight 13. One or both of the lower alignment ramps 27 and 36 may rest against the surface of the alignment ramp 41 to supplementally guide the lower spindle 26 into the eccentric device 11 (e.g., into the bushing 11 disposed therein), but are not limited thereto.

[0087] The synergistic combination of features 15, 27, 36, 41, 49, and 50 disclosed in this paper can contribute to greater self-alignment / self-centering effects.

[0088] For any and all purposes, the disclosure of every patent, patent application and publication cited, listed, named or mentioned herein is incorporated herein by reference in its entirety as if fully expounded herein.

[0089] While the subject matter has been disclosed with reference to specific embodiments, it will be apparent to those skilled in the art that other embodiments and variations can be devised without departing from the true spirit and scope of the subject matter described herein. The appended claims may include, but are not limited to, some such embodiments and equivalent variations.

[0090] For example, it is envisioned that in some embodiments, the eccentric bushing 12 may be entirely optional. The eccentric bushing 12 may be omitted from the eccentric device 11 (whereby the bore 56 and / or inner diameter 57 may be formed directly through the body of the eccentric device 11). Alternatively, the eccentric bushing 12 may be an integral surface portion of the eccentric device 11. In some embodiments, the eccentric bushing 12 and the eccentric device 11 may be provided as a single, integral structure and may be inseparable from each other, but are not limited thereto. The eccentric bushing 12 and the eccentric device may also be provided as separable components with a clearance fit or press fit between them. Thus, as used herein and in the claims, the terms “bore 56” and “inner diameter” 57 may refer to an opening through the eccentric device 11 or its bushing 12—whichever is smaller—configured to receive the lower spindle 26, and / or a bearing surface including, but not limited to, a surface designed to abut, surround, or restrict lateral movement of the outer circumferential diameter surface of the lower spindle 26.

[0091] As another example, it should be further understood that, as used herein and in the claims, the term "guide 15" may refer to a separable guide structure removably secured or mounted to a separate guide seat 14 as shown; or, it may broadly refer to or include any structure connected to, integrated into, attached to, or extending from the inner surface 22 of the dust cover 9, suitably configured to facilitate concentric alignment of the lower spindle 26 of the spindle assembly 2 with the inner diameter 57 of the bore 56 of one or more oil seals 53 and / or eccentric devices 11 or their optional bushings 12. The term "guide 15" may also refer to or include, but is not limited to, any structure connected to, integrated into, attached to, or extending from the inner surface 22 of the dust cover 9, suitably configured to facilitate, guiding the lower spindle 26 into the oil seals 53, eccentric devices 11, eccentric bushings 12, bore 56, and / or inner diameter 57 when the spindle assembly 2 is lowered into the rotary crusher 1.

[0092] The described embodiments are to be considered illustrative rather than limiting in all respects. Therefore, the scope of the invention is indicated and governed only by the appended claims, and not by the foregoing description. All embodiments within the meaning and equivalents of the claims are included within the scope of the claims.

[0093] A contractor or other entity may provide the rotary crusher 1 or its components as substantially shown and described herein, or may implement any one or more methods or method steps shown and described herein, but is not limited thereto. The contractor or other entity may operate the rotary crusher 1 as shown and described herein.

[0094] A contractor or other entity may manufacture, supply, or install the rotary crusher 1 as substantially shown and described herein, and this may include the conversion of an existing rotary crusher to provide a rotary crusher 1 configured to improve shaft self-alignment during installation. A contractor or other entity may receive a request for tender for projects relating to the design, manufacture, delivery, installation, operation, or maintenance of a rotary crusher, or may intend or aim to convert an existing rotary crusher into a rotary crusher incorporating the inventive features, concepts, and related advantages described herein, in order to supply its components as substantially described herein. A contractor or other entity may propose the design of such a rotary crusher 1 or its components for a customer. A contractor or other entity may subcontract or facilitate the manufacture, delivery, sale, and / or installation of any component of the disclosed rotary crusher.

[0095] Contractors or other entities may also maintain, modify, refurbish, or upgrade the rotary crusher (or one or more components thereof) to produce the rotary crusher 1 shown and described. Contractors or other entities may provide such maintenance or modification by subcontracting such services or by directly providing the services or components required for such maintenance, modification, refurbishment, or upgrade. In some cases, contractors or other entities may modify an existing rotary crusher by providing a retrofit kit to obtain a rotary crusher 1 that includes any number of the components described herein or modifications to one or more inventive method steps, design features, devices, or inventive concepts discussed herein.

[0096] Although the invention has been described with reference to specific embodiments and applications, those skilled in the art can produce additional embodiments and modifications based on the teachings without departing from the spirit or scope of the claimed invention.

[0097] List of reference numerals

[0098] 1. Rotary crusher

[0099] 2. Spindle assembly

[0100] 3. Lower top shell

[0101] 4. Bottom shell

[0102] 5. Top shell

[0103] 6. Tripod

[0104] 7. Outer casing (e.g., outer fracturing surface bushing)

[0105] 8. Concave (e.g., internally broken surface bushing)

[0106] 9. Dust cover

[0107] 10. Dustproof seals

[0108] 11. Eccentric device

[0109] 12. Eccentric bushing (e.g., bushing)

[0110] 13. Counterweight

[0111] 14. Guide seat

[0112] 15. Guide components (e.g., replaceable wear surfaces or bushings)

[0113] 15'. Guiding surface

[0114] 16. Holes (e.g., countersunk recesses)

[0115] 17. Side hole

[0116] 18. Mounting holes

[0117] 19. Side hole

[0118] 20. Sloping bottom

[0119] 21. Side rail

[0120] 22. Inner wall

[0121] 23. Lower sidewall

[0122] 24. Side pin

[0123] 25. Fasteners (e.g., machine screws, bolts)

[0124] 26. Lower spindle

[0125] 27. (Lower spindle 26) Align the inclined plane with the lower spindle.

[0126] 28. Lower annular protrusion

[0127] 29. Bottom surface

[0128] 30. Fasteners (e.g., bolts, threaded pins, threaded protrusions)

[0129] 31. Tighten the nut (or bolt head 30).

[0130] 32. End plate

[0131] 33. Radial oil groove

[0132] 34. Annular oil groove

[0133] 35. Central depression

[0134] 36. (The bottom of end plate 32) is aligned with the inclined plane.

[0135] 37. Hole (e.g., thread)

[0136] 38. Upper circular lip margin

[0137] 39. Mounting holes

[0138] 40. Align the hole

[0139] 41. Align with the inclined plane

[0140] 42. Protrusion

[0141] 43. Mounting holes

[0142] 44. Align the pin

[0143] 45. Upper protrusion

[0144] 46. ​​Concave

[0145] 47. Lifting hook

[0146] 48. Thrust bearing

[0147] 49. (Dust cover 9) Outer radial slope

[0148] 50. (Lower radial inner bevel of dustproof seal 10)

[0149] 51. Dustproof sealing cover

[0150] 52. (The outer wall of dust cover 9)

[0151] 53. Oil seal

[0152] 54. Oil-sealed cavity

[0153] 55. Interlaced, arched, blocky protrusions (forming a circular mosaic pattern)

[0154] 56. (The hole for the eccentric device 11 or optional eccentric bushing 12)

[0155] 57. (Inner diameter of hole 56)

[0156] 58. Angle (e.g., between the guide surface 15' and the inner wall 22, between the radial inner surface of the guide seat 14 and the inner wall 22)

[0157] 59. Hydraulic cylinder

[0158] 60. (Top annular edge of end plate 32)

Claims

1. An annular dust cover (9) for a rotary crusher (1), the dust cover (9) being configured to facilitate alignment between the main shaft assembly (2) and the bore (56) of the eccentric device (11) or eccentric bushing (12) when the main shaft assembly (2) is lowered into the rotary crusher (1) from above; the dust cover (9) comprising: Inner wall (22), configured to accommodate the lower spindle (26) of the spindle assembly (2) passing through it; as well as The outer wall (52) is configured to engage an annular dust seal (10) disposed within the spindle assembly (2); The dust cover (9) is characterized in that it further includes a plurality of guides (15) arranged radially inward relative to the inner sidewall (22), each of the plurality of guides (15) having a guide surface (15') configured to contact the main shaft assembly (2); the guide surface (15') forms an angle (58) relative to the inner sidewall (22) such that the lower portion of each guide surface (15') is positioned radially inward relative to the inner sidewall (22) more than the corresponding upper portion of each guide surface (15'); when the main shaft assembly (2) descends into the rotary crusher (1), the guides (15) are collectively arranged and configured to bias the lower main shaft (26) concentrically aligned with the hole (56), The dust cover (9) further includes an oil seal cavity (54) located below the guide (15) for receiving one or more annular oil seals (53). When the main shaft assembly (2) descends into the rotary crusher (1), the guide (15) is further configured to bias the lower main shaft (26) concentrically aligned with one or more annular oil seals (53) located below the guide (15) by sliding contact with the lower main shaft (26).

2. The dust cover (9) according to claim 1 further includes a plurality of guide seats (14) disposed on the inner sidewall (22), each guide seat (14) being configured to support a corresponding one of the guide members (15) in at least a radial direction.

3. The dust cover (9) according to claim 2, wherein, Each guide seat (14) extends radially inward from the inner sidewall (22).

4. The dust cover (9) according to claim 2 or 3, wherein, Each guide (15) is removably secured to one of the guide seats (14) by one or more fasteners that extend through one or more holes (16, 17) in each guide (15) and into its respective guide seat (14).

5. The dust cover (9) according to claim 2 or 3, wherein, Each guide seat (14) includes an inclined bottom surface (20) for supporting a corresponding one of its guide members (15).

6. The dust cover (9) according to claim 5, wherein, Each guide seat (14) includes a side rail (21) that protrudes radially inward from the inclined bottom surface (20).

7. The dust cover (9) according to claim 6, wherein, The side rail (21) is configured to provide lateral support to the guide (15) or to facilitate the positioning of the guide (15) relative to its corresponding guide seat (14).

8. The dust cover (9) according to claim 2 or 3, wherein, The dust cover includes a lower sidewall (23) extending radially inward relative to the inner sidewall (22); the lower sidewall (23) forms an inner annular lip or inner annular flange near the lower part of the dust cover (9); and wherein the guide seat (14) is typically configured as a triangular prism or a gusset plate.

9. The dust cover (9) according to claim 5, wherein, The inclined bottom surface (20) extends at an angle (58) between the inner sidewall (22) and the lower sidewall (23) relative to the inner sidewall (22).

10. The dust cover (9) according to any one of claims 1-3 further includes an annular upper radially outward bevel (49) near the upper edge of the dust cover (9), the upper radially outward bevel (49) being configured to engage the complementary annular lower radially inward bevel (50) of the dust seal (10), biasing the dust seal (10) to be concentrically aligned with the dust cover (9), and guiding the dust seal (10) over the outer surface (52) of the dust cover (9) when the spindle assembly (2) descends into the rotary crusher (1).

11. An end plate (32) for being disposed at the lower distal end of a main shaft assembly (2) of a rotary crusher (1), the end plate (32) comprising a lower side configured to rest on a thrust bearing (48) located above a hydraulic cylinder (59); the end plate (32) further comprising an upper side configured to be received in a recess (46) disposed in a lower main shaft (26) of the main shaft assembly (2), the recess (46) being defined by a bottom surface (29) of the lower main shaft (26) being surrounded by a lower annular protrusion (28) of the lower main shaft (26); Its features are, When the main shaft assembly (2) is introduced into the rotary crusher (1) by lowering the main shaft assembly (2) from above the rotary crusher (1), a lower alignment ramp (36) is provided on the end plate (32) at its radial outermost periphery, the end plate (32) being configured to bias the lower main shaft (26) of the main shaft assembly (2) to be concentrically aligned with the hole (56) of the eccentric device (11) or eccentric bushing (12).

12. The end plate (32) according to claim 11, wherein, When the main shaft assembly (2) is introduced into the rotary crusher (1) by lowering the main shaft assembly (2) from above the rotary crusher (1), the end plate (32) is also configured to bias the lower main shaft (26) of the main shaft assembly (2) to be concentrically aligned with one or more annular oil seals (53) configured to surround the lower main shaft (26) of the main shaft assembly (2).

13. The end plate (32) according to claim 11 or 12, wherein, The lower alignment ramp (36) is configured to smoothly transition to the lower alignment ramp (27) located near the lower annular protrusion (28) of the lower spindle (26).

14. The end plate (32) according to claim 11 or 12 further includes an upper annular lip (38) surrounding an upper protrusion (45) disposed on the end plate (32); the upper annular lip (38) being configured to abut against the lower surface of the lower annular protrusion (28) of the spindle assembly (2).

15. The end plate (32) according to claim 14, wherein, The upper protrusion (45) is configured to be received in a recess (46) provided in the lower spindle (26).

16. The end plate (32) according to claim 14, wherein, The upper surface of the upper protrusion (45) is configured to abut against the bottom surface (29) of the lower spindle (26).

17. The end plate (32) according to claim 14, wherein, The upper annular lip (38) intersects with the lower annular ramp (36) to form a top annular edge (60) at the widest part of the end plate (32).

18. The end plate (32) according to claim 11 or 12, wherein, The lower alignment slope (36) is configured to merge with the lower alignment slope (27) located near the lower annular protrusion (28) of the lower spindle (26), such that the lower alignment slope (36) of the end plate (32) is flush with the lower alignment slope (27) and shares the cone angle with it.

19. A counterweight (13) for use in the upper part of an eccentric device (11) and / or an eccentric bushing (12) disposed within a rotary crusher (1); said counterweight (13) having an upper side and a lower side, and characterized in that, It includes a C-shaped bow profile with two ends and a concave alignment bevel (41); the alignment bevel (41) is defined by an upwardly and radially inwardly inclined surface and extends between the upper and lower sides and between the two ends, such that the width of the counterweight (13) on its upper side is narrower than the width on its lower side; when the main shaft assembly (2) is introduced into the rotary crusher (1) by lowering the main shaft assembly (2) from above the rotary crusher (1), the alignment bevel (41) is configured to bias the lower main shaft (26) of the main shaft assembly (2) of the rotary crusher (1) to be concentrically aligned with the hole (56) of the eccentric device (11) or eccentric bushing (12) to which it is disposed.

20. The counterweight (13) according to claim 19 further includes a protrusion (42) located on the underside of the counterweight (13).

21. The counterweight (13) according to claim 19 or 20, further comprising a mounting hole (43) extending through the counterweight (13) and configured to secure the counterweight (13) to the upper portion of the eccentric device (11) and / or the eccentric bushing (12).

22. The counterweight (13) according to claim 21, wherein, At least one of the mounting holes (43) passes through one of the protrusions (42).

23. A rotary crusher (1) comprises at least one of the following: a. The dust cover (9) according to any one of claims 1-10; b. The end plate (32) according to any one of claims 11-18; c. The counterweight (13) according to any one of claims 19-22.

24. The rotary crusher (1) according to claim 23, comprising at least two of ac.

25. The rotary crusher (1) according to claim 24, comprising all three of them: a, b, and c.

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