Swing jaw for a jaw crusher

Abstract

A swing jaw (10) of a jaw crusher comprises a cast swing jaw frame (12) and a retainer socket for a toggle socket (19) and comprising a first retainer socket component (20). The retainer socket comprises a detachable retainer plate (26) configured for coupling to the first retainer socket component (20) for clamping a toggle socket (19) in a wedging clamping arrangement between the retainer plate (26) and the first retainer socket component (20). The first retainer socket component (20) is typically cast integrally with the cast swing jaw frame (12). The retainer socket comprises opposing side walls (24, 40) diverging towards a rear wall (22) of the retainer socket for wedging the toggle socket (19) in place in the assembled retainer socket. Typically, the first retainer socket component (20) comprises a first side wall (24) and a rear wall (22) of the retainer socket and the detachable retainer plate (26) comprises a second side wall (40) of the retainer socket.

Description

Technical Field

[0001] This invention relates to a swing jaw plate for a jaw crusher, having an improved toggle plate retaining bearing. Additionally, a jaw crusher comprising the aforementioned swing jaw plate and the improved toggle plate retaining bearing is also envisioned. Background Technology

[0002] In jaw crushers, high crushing loads are typically transmitted via a device called a toggle plate. The toggle plate is usually held and supported on two bearings (called toggle plate bearings, or simply "toggle bearings"). These bearings allow the toggle plate to pivot and effectively transmit the crushing load—however, because the plate is hinged to these bearings, these bearings are subject to wear. If this wear becomes excessive, the load transmission of the crushing force becomes unstable, and the bearings need to be replaced. Over time, the enormous crushing force can, and indeed can, permanently deform the toggle bearings—once these toggle bearings are deformed, they become mechanically jammed in situ, and disassembly becomes extremely difficult. The toggle bearings are mounted to retaining bearings cast into the oscillating jaw plate. They are illustrated in… Figure 1 and 2 The diagram shows the toggle bearing 2 being friction-fitted into a recess in the cast-in-cast retaining bearing 3. It has been noted that in the past, when the toggle bearing had become deformed during use, it was necessary to use hot tools or pull lugs to cut it off from the retaining bearing, which were welded to the toggle bearing and pulled away by external force. These practices are very unsafe and should be avoided.

[0003] One object of the present invention is to overcome at least one of the above-mentioned problems. Summary of the Invention

[0004] This objective is achieved by providing a swaying jaw plate as described in appended claim 1. Preferred embodiments and advantages are set forth in the appended dependent claims and will become apparent from the description.

[0005] In one aspect, a retaining bearing assembly for a toggle joint bearing is provided. The retaining bearing assembly includes a toggle joint bearing and a retaining bearing for the toggle joint bearing. The retaining bearing includes a first retaining bearing component cast into a swing jaw plate casting and a second retaining bearing component provided by a removable retaining plate removably mounted to the first retaining bearing component. The first and second retaining bearing components, when assembled, define a recessed retaining bearing having opposing sidewalls that diverge towards the rear of the assembled retaining bearing, such that, in use, the toggle joint bearing is held in place in the bearing in a wedge-clamping arrangement. Unlike existing retaining supports that are integrally cast and therefore require cutting or welding when removing the toggle support, the replacement of the toggle support of the present invention does not involve cutting or welding, but only requires loosening the bolts on the removable plate of the retaining support and removing it from the swing jaw plate casting, thereby allowing the toggle support to be easily removed from the swing jaw plate frame.

[0006] In a first aspect, the present invention provides a swing jaw plate for a jaw crusher, comprising: Cast swing jaw plate frame; and A retaining bearing, the retaining bearing being used for an elbow bearing, and including a first retaining bearing component. The retaining bearing includes a removable retaining plate configured to be connected to a first retaining bearing component so as to clamp the toggle bearing between the retaining plate and the first retaining bearing component in a wedge-clamping arrangement.

[0007] In any embodiment, the first retaining bearing component is integrally cast with the cast oscillating jaw plate frame. This arrangement minimizes the number of components required to mount the toggle bearing to the cast oscillating jaw plate and retaining plate.

[0008] In any embodiment, the retaining bearing, after assembly, includes opposing sidewalls, wherein the lower sidewall of the opposing sidewalls diverges toward the rear wall of the retaining bearing to wed the elbow bearing into place in the assembled retaining bearing.

[0009] In any embodiment, the retaining bearing includes opposing sidewalls, at least one of which, and ideally both, diverge towards the rear of the retaining bearing to wedge the toggle bearing into place within the assembled retaining bearing. This arrangement allows the toggle plate to be held in a wedged clamping configuration.

[0010] In any embodiment, the retaining bearing includes a support recess 59 extending into the retaining bearing 20 beyond the rear wall 22, the support recess 59 being configured to receive a support flange 60 of the toggle bearing 19 to support the toggle bearing 19 in a suspended position.

[0011] In any embodiment, the cast toggle support component includes a first sidewall and a rear wall of the toggle support.

[0012] In any embodiment, the removable retaining plate includes the second sidewall of the elbow bearing.

[0013] In any embodiment, the cast swing jaw plate frame includes a recess for the removable retaining plate.

[0014] In any embodiment, the removable retaining plate includes a first component and a second component, the first component being sized to be received in the recess, and the second component extending out of the recess and including a second sidewall of the elbow support.

[0015] In any embodiment, the oscillating jaw plate includes an elbow support.

[0016] In any embodiment, the elbow bearing includes a rear bearing wall, a front bearing wall including an elongated plate receiving groove, a first bearing sidewall, and a second bearing sidewall.

[0017] In any embodiment, the second bearing sidewall is the lower bearing sidewall of the first bearing sidewall 48 and the second bearing sidewall 50, wherein the lower second bearing sidewall radiates toward the rear bearing wall.

[0018] In either embodiment, the first and second bearing sidewalls diverge toward the rear bearing wall. This arrangement is designed to allow the toggle bearing to wedge into place within the toggle plate bearing upon assembly. Ideally, both sidewall toggle plates diverge outward toward the rear plate wall.

[0019] In any embodiment, the retaining plate is bolted to the cast swing jaw plate frame.

[0020] In any embodiment, the retaining bearing includes two removable retaining plates.

[0021] In a second aspect, the present invention provides a jaw crusher comprising a fixed jaw plate and a swing jaw plate according to the invention.

[0022] In a third aspect, the present invention provides an toggle plate bearing assembly for mounting a toggle plate to a swing jaw plate of a jaw crusher, the toggle plate bearing assembly comprising: A toggle bearing, configured to be bolted to a cast oscillating jaw plate frame, the toggle bearing including a rear bearing wall, a front bearing wall including an elongated plate receiving groove, a first bearing sidewall, and a second bearing sidewall; and A retaining plate having a mounting end face and an opposite front end face. The mounting end face of the retaining plate includes an elongated recess arranged along the edge of the mounting plate, the elongated recess being sized to receive at least a portion of the first or second bearing sidewall of the elbow bearing.

[0023] In any embodiment, the first and second bearing sidewalls of the elbow bearing diverge toward the rear bearing wall.

[0024] In a fourth aspect, the present invention provides an elbow bearing for an elbow plate of a jaw crusher, the elbow bearing comprising an elongated body including a rear bearing wall, a front bearing wall including an elongated plate receiving groove, a first bearing sidewall and a second bearing sidewall, wherein at least a portion of the first bearing sidewall and the second bearing sidewall of the elbow bearing radiates toward the rear bearing wall.

[0025] In any embodiment, at least a portion of one or both of the first and second bearing sidewalls of the elbow bearing diverges at an angle of about 5° to 15° relative to a line X orthogonal to the rear bearing wall of the elbow bearing.

[0026] In any embodiment, the first and / or second bearing sidewall of the elbow bearing has an upper section (e.g., closer to the front bearing wall) and a lower section (e.g., closer to the rear bearing wall), the upper section being orthogonal to the rear bearing wall and the lower section diverging toward the rear bearing wall.

[0027] In any embodiment, the lower edge of the bearing sidewall is chamfered.

[0028] On the other hand, the toggle bearing and the retaining plate are configured as a single plate. The plate is generally L-shaped and includes a bearing plate and a retaining plate, which are typically arranged orthogonally (or nearly orthogonally) to each other. The plate is generally a single unit. The bearing plate typically includes a rear bearing wall, a front bearing wall including an elongated plate receiving groove, and side walls extending between the front and rear walls. Typically, at least a portion of the side walls diverges towards the rear bearing wall. The retaining bearing of the swing jaw plate may have dimensions corresponding to the single plate to allow the single plate to be attached to and removed from the retaining bearing. Thus, the present invention relates to a single plate including a toggle bearing and a retaining plate, a swing jaw plate including the single plate of the present invention and including a retaining plate (which is sized to connect with and closely conform to the L-shaped single plate), or a jaw crusher including the swing jaw plate of the present invention.

[0029] Other aspects and preferred embodiments of the invention are defined and described in the other claims listed below. Attached Figure Description

[0030] Figure 1This is a perspective view taken from the rear of the lower end of the swing jaw plate of a jaw crusher, showing a prior art toggle support mounting assembly.

[0031] Figure 2 yes Figure 1 The image shows a side elevation view of a prior art elbow bearing mounting assembly.

[0032] Figure 3 This is a perspective view taken from the front of the swing jaw plate of a jaw crusher according to an embodiment of the present invention.

[0033] Figure 4 This is a perspective view taken from the rear of the swing jaw plate of a jaw crusher according to an embodiment of the present invention.

[0034] Figure 5 This is a perspective view of an elbow support according to an embodiment of the present invention.

[0035] Figure 6 This is a side elevation view of an elbow support according to an embodiment of the present invention.

[0036] Figure 7 This is a perspective view of a portion of a swing jaw plate according to an embodiment of the present invention, showing the toggle bearing wedged in place by a retaining bearing.

[0037] Figure 8 yes Figure 7 The image shows a side elevation view illustrating details of a swing jaw plate according to an embodiment of the present invention.

[0038] Figure 9 This is a perspective view of the rear portion of the removable retaining plate, which forms part of the swing jaw plate of the present invention.

[0039] Figure 10 This is a perspective view of the front portion of the removable retaining plate, which forms part of the swing jaw plate of the present invention.

[0040] Figure 11 This is a side elevation view of an elbow support according to an embodiment of the present invention.

[0041] Figure 12 This is a side elevation view showing details of a swing jaw plate according to an embodiment of the present invention. Detailed Implementation

[0042] All publications, patents, patent applications and other references mentioned herein are incorporated herein by reference in their entirety for all purposes, just as each individual publication, patent or patent application is specifically and individually indicated to be incorporated by reference and its contents are fully described.

[0043] Unless otherwise specified, the following terms as used herein shall have the following meanings, in addition to any broader (or narrower) meaning that may be enjoyed in the art:

[0044] Unless the context otherwise requires, the singular as used herein should be understood to include the plural, and vice versa. The indefinite article “a” (“a” or “an”) used in relation to an entity should be understood to refer to one or more of that entity. Therefore, the terms “a,” “one or more,” and “at least one” are used interchangeably herein.

[0045] As used herein, the term "comprises" or its variations, such as "comprises" or "comprising," should be understood to mean a group that includes any of the listed wholes (e.g., features, elements, characteristics, properties, methods / process steps, or limitations) or wholes (e.g., characteristics, elements, properties, properties, methods / process steps, or limitations), but does not exclude any other wholes or groups of wholes. Thus, as described herein, the term "comprises" is inclusive or open-ended and does not exclude additional, unlisted wholes or methods / process steps. Example

[0046] The invention will now be described with reference to specific examples. These examples are merely exemplary and for illustrative purposes only; they are not intended to limit the claimed monopoly scope or the described invention in any way. These examples constitute the best mode for carrying out the invention as currently understood.

[0047] First refer to Figure 1 and Figure 2 The diagram shows the lower portion of a prior art oscillating jaw plate 1 and an toggle bearing 2 mounted on a retaining bearing 3, which forms part of the oscillating jaw plate casting. The retaining bearing 3 includes an elongated recess defined by a rear wall 4 and side walls 5, 6 (which are part of the casting), wherein the side walls are orthogonal to the rear wall. The toggle bearing has a profile that closely matches the profile of the retaining bearing, such that the toggle bearing frictionally engages with the retaining bearing. In practice, the toggle bearing must be hammered into place in its bearing or loosely clamped by being held in place by the toggle plate. While this arrangement holds the toggle bearing very securely in place, removal of the toggle plate is practically impossible without cutting it off or welding a lifting clamp to it when the toggle bearing wears and deforms due to the forces transmitted by the toggle plate.

[0048] Now for reference Figure 3 , 4Reference numerals 7 and 8 describe the oscillating jaw plate of the present invention, generally indicated by reference numeral 10, wherein components described with reference to previous embodiments are given the same reference numerals. The oscillating jaw plate 10 (only the lower portion is shown and described) includes a cast frame 12 having a front end face and a rear end face 16, to which a grooved jaw plate liner 14 is mounted, and the rear end face 16 includes a retaining bearing and an elbow bearing 19 clamped within the retaining bearing. Unlike prior art retaining bearings (where the elongated recess for the elbow bearing has a rear wall and opposing side walls), the retaining bearing of the present invention includes a fixed cast component 20 comprising a rear wall 22, inwardly tapering side walls 24, and two removable retaining plates 26 bolted to the fixed cast component 20 to clamp the elbow bearing 19 between the removable retaining plates 26 and the cast side walls 24.

[0049] The removable retaining plate 26 is in Figure 9 and 10 The details are shown in more detail below. Each removable retaining plate includes a mounting end face 30 and an opposite front end face 32. Holes are provided to receive mounting bolts 34 for mounting the plate to the lower surface 34a of the fixed cast component 20. The outer edge of the mounting end face 30 of the plate 26 includes an elongated recess 36 defined by an inward step 38 and an outwardly tapering inclined sidewall 40. This recess is sized to engage one side of the toggle bearing.

[0050] More details, and reference Figure 5 , 6 8. The toggle bearing 19 includes an elongated body having a rear bearing wall 42, a front bearing wall 44 (including an elongated plate receiving groove 46), a first bearing side wall 48, and a second bearing side wall 50. A countersunk hole 51 is provided in the groove for bolting the toggle bearing 19 to the rear wall 22 of the fixed cast component 20. The bearing side walls 48 and 50 have an upper section 54, a lower chamfered section 56, and a middle wall section 58. The upper section 54 is orthogonal to the rear bearing wall 42, and the middle wall section 58 tapers outward toward the rear bearing wall 42, forming an angle of approximately 10° with the line X orthogonal to the rear bearing wall. When the retaining plate 26 is bolted to the lower surface 34a of the fixed casting component 20, the tapered intermediate wall section 58 of the second bearing sidewall 50 abuts against the sidewall 40 of the elongated recess 36, resulting in the elbow bearing 19 being wedged and clamped between the retaining plate 26 and the inwardly tapered sidewall 24 of the fixed casting component 20.

[0051] In use, the toggle bearing 19 is bolted to the cast component 20 of the retaining bearing, wherein the rear wall 42 of the toggle bearing 19 abuts the rear wall 22 of the cast component of the retaining bearing. Then, the retaining plate 26 is bolted to the lower surface 34a of the fixed cast component 20, wherein the elongated recess 36 receives the bearing sidewall 58 of the toggle bearing 19. Once the retaining plate is bolted in place, the toggle bearing is held in a wedge-clamped position between the bearing sidewall 24 and the sidewall 40 of the elongated recess 36. During use, if the toggle bearing experiences wear and deformation, it can be easily removed by disengaging the removable retaining plate, thereby releasing the wedge clamp and disengaging the toggle bearing.

[0052] exist Figure 10 The image shows a perspective view of the front portion of a removable retaining plate, which forms part of the swing jaw plate of the present invention. In this exemplary embodiment, the retaining support includes two removable retaining plates 26. In a preferred embodiment, the retaining support includes three such removable retaining plates 26.

[0053] refer to Figure 11 This shows an embodiment of the elbow support, which is similar to... Figure 5 and Figure 6 This embodiment may include any features of that embodiment. In this embodiment, the toggle bearing 19 also includes a rear bearing wall 42, a front bearing wall 44 (which includes an elongated plate receiving groove 46), an upper first bearing sidewall 48, and a lower second bearing sidewall 50, wherein the middle sidewall 58 of the lower second bearing sidewall 50 radiates toward the rear bearing wall. In contrast, the upper first bearing sidewall 48 is substantially perpendicular to the rear bearing wall 42. As shown in this embodiment, the toggle bearing 19 also includes a support flange 60 that extends beyond the rear bearing wall 42. The upper first bearing wall 48 extends into the support flange 60, or conversely, the support flange 60 provides at least a portion of the upper first bearing wall 48.

[0054] Figure 12 An embodiment of a retaining bearing is shown, which is similar to Figure 7 and Figure 8 Those embodiments, and therefore may include any of the features of those embodiments.

[0055] In this embodiment, the retaining bearing also includes opposing sidewalls 24 and 40 after assembly, but only the lower sidewall 40 of the opposing sidewalls 24 and 40 diverges toward the rear wall 22 of the retaining bearing to wed the elbow bearing 19 into the assembled retaining bearing.

[0056] As shown in this embodiment, the retaining bearing also includes a support recess 59 extending into the retaining bearing 20 beyond the rear wall 22. The support recess 59 is configured to receive a support flange 60 of the toggle bearing 19 to support the toggle bearing 19 in a suspended position. In particular, the support flange 60 is then wedged into the support recess 59, and / or the support flange 60 is at least partially abutted against the lower surface of the support recess 59. Equivalent example

[0057] The foregoing description details the presently preferred embodiments of the invention. Many modifications and variations will be expected in practice upon consideration of these descriptions by those skilled in the art. These modifications and variations are intended to be included in the appended claims.

Claims

1. A swing jaw plate (10) for a jaw crusher, comprising: Cast swing jaw plate frame (12); and A retaining bearing for an elbow bearing (19) and including a first retaining bearing component (20). The retaining bearing includes a removable retaining plate (26) configured to connect to the first retaining bearing component (20) so as to clamp the toggle bearing (19) between the retaining plate (26) and the first retaining bearing component (20) in a wedge-clamping arrangement. The fixed bearing, after assembly, includes opposing sidewalls (24, 40), wherein the first fixed bearing component (20) includes a first upper sidewall (24) of the opposing sidewalls (24, 40), characterized in that the detachable fixed plate (26) includes a second lower sidewall (40) of the opposing sidewalls (24, 40), wherein the second lower sidewall (40) radiates toward the rear wall (22) of the fixed bearing to wed the elbow bearing (19) into place in the assembled fixed bearing.

2. The swing jaw plate (10) according to claim 1, wherein the first retaining bearing component (20) is integrally cast with the cast swing jaw plate frame (12).

3. The swing jaw plate (10) according to any one of claims 1 to 2, wherein the opposing sidewalls (24, 40) diverge toward the rear wall (22) of the retaining seat to wed the elbow bearing (19) into place in the assembled retaining seat.

4. The swing jaw plate (10) according to any one of claims 1 to 2, wherein the retaining seat includes a support recess (59) extending into the first retaining seat member (20) beyond the rear wall (22), the support recess (59) being configured to receive a support flange (60) of the toggle seat (19) to support the toggle seat (19) in a suspended position.

5. The swing jaw plate (10) according to any one of claims 1 to 2, wherein the cast swing jaw plate frame (12) includes a recess for the removable retaining plate (26), and wherein the removable retaining plate includes a first component and a second component, the first component being sized to be received in the recess, and the second component extending out of the recess and including the second lower sidewall (40) of the retaining support.

6. The swing jaw plate (10) according to any one of claims 1 to 2, wherein the swing jaw plate (10) includes an elbow bearing (19), wherein the elbow bearing includes a rear bearing wall (42), a front bearing wall (44), an upper first bearing sidewall (48) and a lower second bearing sidewall (50), wherein the front bearing wall (44) includes an elongated plate receiving groove (46), wherein the lower second bearing sidewall radiates toward the rear bearing wall.

7. The swing jaw plate (10) according to any one of claims 1 to 2, wherein the swing jaw plate includes an elbow support (19), wherein the elbow support includes a rear support wall (42), a front support wall (44), a first support side wall (48), and a second support side wall (50), wherein the front support wall (44) includes an elongated plate receiving groove (46), wherein the first support side wall and the second support side wall diverge toward the rear support wall.

8. The swing jaw plate (10) according to any one of claims 1 to 2, wherein the retaining plate (26) is configured to be bolted to the cast swing jaw plate frame (12).

9. The swing jaw plate (10) according to any one of claims 1 to 2, wherein the retaining seat comprises two or more removable retaining plates (26).

10. A jaw crusher, comprising a fixed jaw plate and a swing jaw plate (10) according to any one of claims 1 to 9.

Images