Swing jaw plate of jaw crusher

Abstract

A swing jaw (10) of a jaw crusher comprises a cast swing jaw frame (12) and a retention socket for a toggle socket (19) and comprising a first retention socket part (20). The retaining seat comprises a detachable retaining plate (26) which is configured to be coupled to the first retaining seat part (20) in order to clamp a toggle seat (19) between the retaining plate (26) and the first retaining seat part (20) in a wedged clamping arrangement. The first retention seating member (20) is generally cast integrally with the cast swing jaw frame (12). The invention is characterized in that the retaining seat comprises opposite side walls (24, 40) after assembly, and the opposite side walls (24, 40) diverge towards the rear wall (22) of the retaining seat, so that the toggle seat (19) is wedged in position in the assembled retaining seat. Generally, the first retainer member (20) includes a first side wall (24) and a rear wall (22) of the retainer, and the removable retainer plate (26) includes a second side wall (40) of the retainer.

Description

Technical Field

[0001] The present invention relates to a swinging jaw of a jaw crusher, which has an improved toggle plate retaining bearing. In addition, a jaw crusher is also envisaged, which comprises the swinging jaw and the improved toggle plate retaining bearing. Background Art

[0002] In a jaw crusher, high crushing loads are typically transmitted via a device called a toggle plate. The toggle plate is typically held and supported on two bearings (called toggle plate bearings, or simply "toggle bearings"). The bearings allow the toggle plate to pivot and effectively transmit the crushing load - however, because the plate is hinged on these bearings, these bearings are subject to wear. If this wear becomes too great, the load transmission of the crushing force becomes unstable and the bearings need to be replaced. Over time, the enormous crushing forces can and do permanently deform the toggle bearings - once these toggle bearings are deformed, they become mechanically stuck in place and removal becomes very difficult. The toggle bearings are mounted to retaining bearings cast into the swinging jaw. They are illustrated in Figure 1 and 2 , and shows the toggle bearing 2 being friction fit into a recess cast into the cast retention bearing 3. It has been noted that in the past, when the toggle bearing has become deformed during use, the toggle bearing has needed to be cut from the retention bearing using hot tools or pulling lugs that are welded to the toggle bearing and pulled with external force. These practices are very unsafe and should be avoided.

[0003] It is an object of the present invention to overcome at least one of the above problems. Summary of the invention

[0004] This object is achieved by providing a swing jaw as described in the attached claim 1. Preferred embodiments and advantages are set out in the attached dependent claims and will become apparent from the description.

[0005] In one aspect, a retention bearing assembly for a toggle bearing is provided. The retention bearing assembly comprises a toggle bearing and a retention bearing for the toggle bearing. The retention bearing comprises a first retention bearing component cast into a swing jaw casting and a second retention bearing component provided by a removable retention plate removably mounted to the first retention bearing component. The first retention bearing component and the second retention bearing component define a concave retention bearing when assembled, the concave retention bearing having opposed side walls that diverge towards the rear of the assembled retention bearing so that in use, the toggle bearing is held in place in the bearing in a wedging clamping arrangement. Unlike the prior art retaining bearings which are integrally cast and therefore require cutting or welding when removing the toggle bearing, replacement of the toggle bearing of the present invention does not involve cutting or welding but only requires unbolting the removable plates of the retaining bearing and removing it from the swing jaw casting, thereby allowing the toggle bearing to be easily removed from the swing jaw frame.

[0006] In a first aspect, the present invention provides a swing jaw of a jaw crusher, comprising: Cast swing jaw frame; and A retaining seat, the retaining seat is used for a toggle seat and comprises a first retaining seat component, The retention shoe includes a removable retention plate configured to be coupled to a first retention shoe component to clamp the toggle shoe between the retention plate and the first retention shoe component in a wedge clamping arrangement.

[0007] In either embodiment, the first retention bearing component is cast integrally with the cast swing jaw frame.This arrangement minimises the number of components required to mount the toggle bearing to the cast swing jaw and retention plate.

[0008] In either embodiment, the retention socket comprises opposed side walls when assembled, wherein a lower one of the opposed side walls diverges toward a rear wall of the retention socket to wedge the toggle socket into place in the assembled retention socket.

[0009] In either embodiment, the retention shoe includes opposed side walls, at least one of which and desirably both diverge toward the rear of the retention shoe to wedge the toggle shoe in place in the assembled retention shoe. This arrangement allows the toggle plate to be retained in a wedging clamping arrangement.

[0010] In either embodiment, the retention seat includes a support recess 59 extending into the retention seat 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.

[0011] In either embodiment, the cast toggle bearing component includes a first side wall and a rear wall of the toggle bearing.

[0012] In any embodiment, the removable retention plate includes a second side wall of the toggle bearing.

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

[0014] In any embodiment, the removable retention plate includes a first component and a second component, the first component being sized to be received in the recess, the second component extending beyond the recess and including a second side wall of the toggle bearing.

[0015] In any embodiment, the swing jaw includes a toggle bearing.

[0016] In any embodiment, the toggle bearing includes a rear bearing wall, a front bearing wall including an elongated plate receiving recess, a first bearing side wall, and a second bearing side wall.

[0017] In either embodiment, the second shoe sidewall is a lower shoe sidewall of the first shoe sidewall 48 and the second shoe sidewall 50 , wherein the lower second shoe sidewall diverges toward the rear shoe wall.

[0018] In either embodiment, the first and second bearing side walls diverge toward the rear bearing wall. This arrangement is intended to allow the toggle bearing to be wedged into place in the toggle plate bearing when assembled. Ideally, both side wall toggle plates diverge outwardly toward the rear plate wall.

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

[0020] In any embodiment, the retaining seat includes two detachable retaining plates.

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

[0022] In a third aspect, the present invention provides a toggle bearing assembly for mounting a toggle plate to a swing jaw of a jaw crusher, the toggle bearing assembly comprising: a toggle bearing configured to be bolted to the cast swing jaw frame, the toggle bearing comprising a rear bearing wall, a front bearing wall including an elongated plate receiving recess, a first bearing side wall, and a second bearing side wall; and a retention plate having a mounting end face and an opposite front end face, Wherein, the mounting end surface of the retention plate includes an elongated recess arranged along an edge of the mounting plate, and the elongated recess is dimensioned to receive at least a portion of the first or second bearing side wall of the toggle bearing.

[0023] In either embodiment, the first and second bearing side walls of the toggle bearing diverge toward the rear bearing wall.

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

[0025] In either embodiment, at least a portion of one or both of the first and second socket side walls of the toggle socket diverges at an angle of about 5° to 15° relative to a line X normal to the rear socket wall of the toggle socket.

[0026] In any embodiment, the first and / or second bearing sidewalls of the toggle bearing have 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 is orthogonal to the rear bearing wall, and the lower section diverges toward the rear bearing wall.

[0027] In either embodiment, the lower edge of the socket side wall is chamfered.

[0028] On the other hand, the toggle bearing and the retaining plate are arranged as a single plate. The plate is generally L-shaped and includes a bearing plate and a retaining plate, which are usually arranged in an orthogonal (or nearly orthogonal) arrangement to each other. The plate is generally a single plate. The bearing plate usually includes a rear bearing wall, a front bearing wall including an elongated plate receiving groove, and a side wall extending between the front wall and the rear wall. Typically, at least a portion of the side wall diverges toward the rear bearing wall. The retaining bearing of the swinging jaw plate may have a size corresponding to the single plate to allow the single plate to be attached to the retaining bearing and removed from the retaining bearing. Thus, the present invention relates to a single plate including a toggle bearing and a retaining plate, a swinging jaw plate including the single plate of the present invention and including a retaining plate (which is set to be connected to the L-shaped single plate and tightly conform to the L-shaped single plate), or a jaw crusher including the swinging jaw plate of the present invention.

[0029] Further aspects and preferred embodiments of the invention are defined and described in the further claims listed below. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0031] Figure 2 yes Figure 1 A side elevation view of a prior art toggle bearing mounting assembly is shown in FIG.

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

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

[0034] Figure 5 is a perspective view of a toggle bearing according to one embodiment of the present invention.

[0035] Figure 6 is a side elevation view of a toggle bearing according to one embodiment of the present invention.

[0036] Figure 7 is a perspective view of a portion of a swing jaw according to one embodiment of the present invention showing the toggle bearing wedged in place by the retention bearing.

[0037] Figure 8 yes Figure 7 A side elevation view of a detail of a swing jaw according to an embodiment of the invention is illustrated in FIG.

[0038] Fig. 9 is a perspective view of the rear portion of a removable retention plate which forms part of the swing jaw of the present invention.

[0039] Fig.10 is a perspective view of the front portion of a removable retention plate which forms part of the swing jaw of the present invention.

[0040] Fig.11 is a side elevation view of a toggle bearing according to one embodiment of the present invention.

[0041] Fig.12 is a side elevation view of a detail of a swing jaw according to one embodiment of the present invention. DETAILED DESCRIPTION

[0042] All publications, patents, patent applications and other references mentioned herein are hereby incorporated by reference in their entirety for all purposes to the same extent as if each individual publication, patent or patent application was specifically and individually indicated to be incorporated by reference and was set forth in its entirety.

[0043] Unless otherwise specifically stated, the following terms used herein have the following meanings in addition to any broader (or narrower) meanings they may have in the art:

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

[0045] As used herein, the term "comprises" or variations such as "comprises" or "comprising" should be understood to mean the inclusion of any recited integers (e.g., features, elements, characteristics, attributes, method / process steps, or limitations) or groups of integers (e.g., characteristics, elements, characteristics, attributes, method / process steps, or limitations) but not the exclusion of any other integer or group of integers. Thus, as used herein, the term "comprises" is inclusive or open-ended and does not exclude additional, unrecited integers or method / process steps. Example

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

[0047] First reference Figure 1 and Figure 2 , shows the lower portion of a prior art swing jaw 1 and shows a toggle bearing 2 mounted on a retaining bearing 3 which forms part of the swing jaw casting. The retaining bearing 3 comprises 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 having a profile which closely matches that of the retaining bearing so that the toggle bearing is friction fit into the retaining bearing and in practice the toggle bearing must be hammered into place in its seat or loose fit and clamped by the toggle plate retention. Although this arrangement holds the toggle bearing in place very securely, when the toggle bearing wears and deforms due to the forces transmitted by the toggle plate, removal of the toggle plate is in practice impossible without cutting the toggle plate away or welding a lifting clamp to the plate.

[0048] Reference now Figure 3 , 4, 7 and 8, describe a swing jaw of the present invention, generally indicated by reference numeral 10, wherein the parts described with reference to the previous embodiments are given the same reference numerals. The swing jaw 10 (only the lower portion is shown and described) comprises a cast frame 12 having a front face and a rear face 16, to which a fluted jaw lining 14 is mounted, and the rear face 16 comprises a retaining bearing and a toggle bearing 19 clamped in the retaining bearing. Unlike the retaining bearing of the prior art, in which the elongated recess for the toggle bearing has a rear wall and opposed side walls, the retaining bearing of the present invention comprises a fixed cast part 20, which comprises a rear wall 22, inwardly tapering side walls 24 and two removable retaining plates 26, which are bolted to the fixed cast part 20 to clamp the toggle bearing 19 between the removable retaining plates 26 and the cast side walls 24.

[0049] The removable retaining plate 26 is Fig. 9 and 10 20. Each removable retention plate includes a mounting end face 30 and an opposite front face 32. Holes are provided to receive mounting bolts 34 for mounting the plate to a 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 side wall 40. The recess is sized to engage one side of a toggle bearing.

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

[0051] In use, the toggle bearing 19 is bolted to the cast component 20 of the retention bearing, wherein the rear wall 42 on the toggle bearing 19 abuts the rear wall 22 of the cast component of the retention bearing. The retention plate 26 is then bolted to the lower surface 34a of the fixed cast component 20, wherein the elongated recess 36 receives the bearing side wall 58 of the toggle bearing 19. Once the retention plate is bolted in place, the toggle bearing is held in a wedged clamped position between the bearing side wall 24 and the side wall 40 of the elongated recess 36. During use, when the toggle bearing is subject to wear and deformation, the toggle bearing can be easily removed by unbolting the removable retention plate, thereby releasing the wedging clamp and unbolting the toggle bearing and removing the toggle bearing.

[0052] exist Fig.10 In the figure, a perspective view of the front part of a removable retaining plate is shown, which forms part of the swing jaw of the present invention. In this exemplary embodiment, the retaining seat includes two removable retaining plates 26. In a preferred embodiment, the retaining seat includes three such removable retaining plates 26.

[0053] refer to Fig.11 , shows an embodiment of a toggle bearing, which is similar to Figure 5 and Figure 6 4 and may therefore include any of the 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 recess 46), an upper first bearing side wall 48, and a lower second bearing side wall 50, wherein the intermediate side wall 58 of the lower second bearing side wall 50 diverges toward the rear bearing wall. In contrast, the upper first bearing side wall 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] Fig.12 An embodiment of a retention seat 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 retention socket also includes opposing side walls 24, 40 after assembly, but only the lower side wall 40 of the opposing side walls 24, 40 diverges toward the rear wall 22 of the retention socket to wedge the toggle socket 19 into place in the assembled retention socket.

[0056] As shown in the present embodiment, the retention bearing further includes a support recess 59 extending into the retention bearing 20 beyond the rear wall 22. The support recess 59 is configured to receive the support flange 60 of the toggle bearing 19 to support the toggle bearing 19 in the suspended position. In particular, the support flange 60 is then wedged in the support recess 59 and / or the support flange 60 at least partially rests on the lower surface of the support recess 59. Equivalence Example

[0057] The above description describes the currently preferred embodiments of the present invention in detail. After considering these descriptions, those skilled in the art will expect that many modifications and changes will occur in practice. These modifications and changes are intended to be included in the appended claims.

Claims

1. A swing jaw plate (10) of a jaw crusher, comprising: Casting a swing jaw frame (12); and A retaining seat, the retaining seat is used for the toggle seat (19) and comprises a first retaining seat component (20), The invention is characterized in that the retaining seat comprises a detachable retaining plate (26), which is configured to be connected to the first retaining seat component (20) so as to clamp the toggle joint seat (19) between the retaining plate (26) and the first retaining seat component (20) in a wedge clamping arrangement.

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

3. The swing jaw (10) according to claim 1 or 2, wherein the retaining seat comprises opposing side walls (24, 40) after assembly, wherein the lower side wall (40) of the opposing side walls (24, 40) diverges towards the rear wall (22) of the retaining seat to wedge the toggle joint seat (19) into place in the assembled retaining seat.

4. The swing jaw (10) according to any one of the preceding claims 1 to 3, wherein the retaining seat comprises, after assembly, opposed side walls (24, 40) which diverge towards a rear wall (22) of the retaining seat in order to wedge the toggle seat (19) into place in the assembled retaining seat.

5. The swing jaw (10) according to any of the preceding claims 1 to 4, wherein the retention bearing comprises a support recess (59) extending into the retention 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.

6. The swing jaw (10) according to any of the preceding claims 1 to 5, wherein the first retaining seat component (20) comprises a first side wall (24) and a rear wall (22) of the retaining seat, and the removable retaining plate (26) comprises a second side wall (40) of the retaining seat.

7. A swing jaw (10) according to any preceding claim 1 to 6, wherein the cast swing jaw frame (12) comprises a recess for the removable retention plate (26), and wherein the removable retention plate comprises a first part and a second part, the first part being dimensioned to be received in the recess and the second part extending out of the recess and comprising the second side wall (40) of the retention seat.

8. The swing jaw (10) according to any one of the preceding claims 1 to 7, wherein the swing jaw (10) comprises a toggle bearing (19), wherein the toggle bearing comprises a rear bearing wall (42), a front bearing wall (44), an upper first bearing side wall (48) and a lower second bearing side wall (50), the front bearing wall (44) comprising an elongated plate receiving recess (46), wherein the lower second bearing side wall diverges towards the rear bearing wall.

9. The swing jaw (10) according to any of the preceding claims 1 to 8, wherein the swing jaw comprises a toggle bearing (19), wherein the toggle bearing comprises a rear bearing wall (42), a front bearing wall (44), a first bearing side wall (48) and a second bearing side wall (50), the front bearing wall (44) comprising an elongated plate receiving recess (46), wherein the first bearing side wall and the second bearing side wall diverge towards the rear bearing wall.

10. The swing jaw (10) according to any one of the preceding claims 1 to 9, wherein the retaining plate (26) is configured to be bolted to the cast swing jaw frame (12).

11. The swing jaw (10) according to any one of the preceding claims 1 to 10, in which the retaining seat comprises two or more detachable retaining plates (26).

12. A jaw crusher comprising a fixed jaw plate and a swing jaw plate (10) according to any one of claims 1 to 11.

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