MXPA98008008A - Assembly of emptyed wear slider for material handling / displacement equipment - Google Patents

Abstract

A wear slide assembly is attached to a surface of an excavation bucket and serves to protect a portion of the abrasion wear surface during bucket use. The assembly includes a base member, a wear slide member, a pair of bolts and a pair of conical locknuts. The base member is welded to the surface and has a pair of undercut grooves that captively retain the head portions of the bolts, with the bolt bodies that are transverse to the surface and project outwardly beyond the outer side of the bolt. member debase. The wear slide member is mounted on the base member by moving the wear slide member toward the base member in a direction transverse to the surface in a manner that causes the bolt body to project outwardly between and be recessed. within a pair of openings formed through the wear member, and also causing the projections of the base member to be received complementarily within the recesses formed in the wear slide member. Finally, the conical locknuts are screwed onto the lowered pin bodies within the wear slide member to releasably hold the wear slide member on the base member. The intertraining between the projections of the base member and the recesses of the wear slide member, prevent operational loads imposed on the assembly from moving from the wear slide member relative to the base member parallel to the protected surface to avoid this so that the bolts are subjected to shear stress by such operational loads

Description

> - ASSEMBLY OF BRAIDED WEAR SLIDER FOR MATERIAL HANDLING / DISPLACEMENT APPARATUS DESCRIPTION OF THE INVENTION The present invention relates generally to a Z aaparato pai ground movements and, in a form (-referred thereof, more particularly refers to a structure of sliding wear to inhibit abrasion wear of the surface in the apparatus for earth movements such as, for example, excavation buckets and similar. Lc? Wear slide assemblies are frequently installed on various earthmoving structure surfaces such as excavation buckets, to inhibit abrasion wear on such surfaces during the use of earthmoving structures. A typical wear slide assembly includes an assembly that is welded or otherwise anchored to the surface to be protected from abrasive wear, and a wear slide member or reinforcing ring that is placed on the base and releasably intertrabado with it. To support the wear member, during the use of the earthmoving structure, a separate locking mechanism is used to hold the wear member to the base and maintain the wear member in an untreated relationship with the base. There is the emotion of the microlueal wear from the base if desired. Several problems, limitations and disadvantages have typically been associated with the mechanisms of my era of contracting / constniction-based time < • -. mvenciona I For example, there are not many mechanisms in place. it is conventional they must be forcibly tortured to dislodge them, creating a dangerous potential for security. Other types of locking mechanisms may be dislodged during earthwork operations, thereby causing the wear member to fall from its underlying base structure or may be oversized in a manner that requires them to be cast to allow the removal of the slide. of wear from its associated base. Additionally, many working mechanisms tend to be tedious and time consuming for removal and installation. Even other types of conventional locking mechanisms, such as the bolts, extend through the wear slide, the base and the underlying earthmoving structure wall, undesirably requiring access to opposite sides of the structure wall of the structure. earth movements for the installation and removal of the runner of aesgaste, and additionally they can weaken the wall of the structure of earth movements due to the need to set up a series of bolt holes in it. As can easily be seen from the foregoing, there is a need for an improved wear slide assembly that eliminates or at least substantially reduces the aforementioned problems, limitations and disadvantages commonly associated with conventional wear slide assemblies. Accordingly, it is an object of the present invention to provide an improved wear slide assembly. In carrying out the principles of the present invention in accordance with a preferred embodiment thereof, a specially designed wear slide assembly is provided which is usable to protect a portion of a surface, eg, a surface of an apparatus handling of material such as an excavation bucket, abrasion wear. From a broad perspective, the wear slide assembly comprises a base member having ur. insurebie internal side to the surface that is going to. protect and an opposite external side to the side of the internal base member. A portion of the wear member of the assembly can be mounted on the base member by moving the wear member transversely to the outer side of the base member. To releasably support the wear slide member on the base member1, fastening means are provided. Such fastening devices can be placed completely out of the way and include a fastened member! which extends through the wear member and the base member along a transverse axis to the portion of surface to be protected. The base member and the wear member have intertratable portions which, with the inner side of the base member secured to the surface and the wear member mounted on the base member, are operative to prevent appreciable movement of the wear member with respect to the base member parallel to the surface to thereby allow operating loads imposed on the wear member parallel to the surface from which they cause the wear member to subject the clamping member to shear stress. In a preferred form of the wear slide assembly, the fastening member is a bolt, and a slot for undercutting is formed in the base member and captively retains the head portion of the bolt in a manner that causes the body of the bolt to Bolt extends transversely to the surface and projects outwardly beyond the outer side of the wear member. As the stripping member is mounted on the base member, moving the wear member transversely towards the outer side of the base member (and therefore transverse to the surface portion to which the base member is secured), the projecting bolt body portion enters and is recessed within an aperture formed through the wear member. To complete the installation of the assembly, a conical locking nut is placed in such an aperture and screwed onto the bolt body in a manner that causes the annular tapered underside of the nut to forcefully engage a tapered annular portion responsive to the opening. of the member of desgaete. The bolt and nut are thus completely set out from the surface portion to which the assembly is secured, thus eliminating the need to form bolt holes through the surface. According to other characteristics of the invention, the inner end of the undercut groove is configured to complementarily couple a side edge portion of the bolt head in a manner that prevents the bolt from rotating relative to the base member in accordance with the nut is being screwed onto the bolt body. Additionally, a wear indicator recess is preferably formed on the underside of the wear member. As the outer side of the wear member is abraded by the operational abrasion it eventually wears the outer side portion on the beam to give the operator in this way a visual indication that it is time to wear the wear member already worn and replace it with another . BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a top plan view of a specially designed bolted wear slide assembly which modalizes the principles of the present invention and which is operatively secured to a surface that is to be protected from abrasion wear, representatively a side surface of an excavation bucket; Figure 2 is a cross-sectional view through the wear slide assembly taken along line 2-2 of Figure 1; Figure 3 is an exploded cross-sectional view of the wear slide assembly taken along line 3-3 of Figure 1; Figure 4 is a bottom plan view of the wear slide portion of the assembly; Figure 5 is a top plan view of the base portion of the assembly with the wear slide portion therein, which has been removed; Figure 6 is a bottom plan view of the base portion; Figure 7 is an elevational view beats to one of the bolts used to securely ensure the wear slide to the underlying base position. of the assembly; and Figure 8 is a side elevational view of one of the conical locknuts used together with the bolts. Referring initially to Figures 1-5, the present invention provides a specially designed bolted wear slide assembly 10, which is insurable to a surface, such as a lower side surface 12 of a metal digging bucket 14, to protect the surface 12 of abrasion wear of the earth during the use of the excavation bucket 12. While the wear slide assembly 10 is shown representatively as it is used in conjunction with an excavation bucket, it will be readily appreciated by those with experience in this particular technique which can also be used in a variety of other surface protection applications such as, for example, in other types of material handling or moving apparatus, on truck platform protectors and other types of surface subject to wear during the use of their associated structures.

The wear slide assembly lü is of a very simple construction and includes an elongated rectangular metal welded base member 1 (see Figures 2, 3, and G); an elongated metal wear slide member 18 (see Figures 1-4); two bolts 20 (see Figure 7); and two conical locking nuts 22 (see Figure 8). As illustrated in Figures 3,5 and 6, the welded base member 16 has an upper or outer side 24, a lower or internal side 26, a pair of opposite ends 28 and 30 defining opposing edge surfaces of the edge member. base, a pair of opposite cut edge portions 32 and 34, a central opening 36 and a pair of undercut grooves 38 extending inward from their opposite ends 28 and 30. For the purposes described below in FIG. present, each of the internal ends cut from the grooves 26 have a pair of angled faces 40 formed therein. Additionally, the welded base member 16 has a pair of elongated vertical locating shoulder portions 42 formed on its upper side 24 and extending parallel to its length and positioned on opposite sides of its central opening 36 and its undercut grooves 38. As illustrated in Figures 3 and 5, to prepare the assembly 10 for installation on the surface 12, the bottom side 26 of the base member 16 is welded to the surface 12 using welds 44 positioned along the poi cut side edge 32 and 34, and a solder joint 46 extending around a lower edge periphery of the central aperture 36. The wear slide member 18, as shown in FIGS. 1-4, is better illustrated in FIGS. configuration i ectangular elongated slightly bigger than the iri iCim ro i elem base welded 16 and have a. upper or outer side 48; a lower side 50; opposite ends 52 and 54; opposite sides 56 and 58 extending between the ends 52 and 54; and a generally rectangular bottom side recess 60 configured to additionally receive the sWell base member 16 as will be described hereinafter. The lower side recess 60 has an internal side surface 62 in which a pair of elongated depressions 64 each formed to receive in addition one of the locating ridges of the welded base member 42 is formed. As illustrated, the elongated depressions 64 are longitudinally parallel to and adjacent to the opposite sides 56 and 58 of the wear slide member 18. Centrally positioned between and extending longitudinally parallel to the depressions 64 is an elongated wear indicator recess 66. A pair of transverse openings in the circular direction 68 is form through the exhaust gas member 1 H between the depressions 04 in extremes (positions of the retreat io indicated desga:! •• 66. As best illustrated in Figure. ', each ul- >;and? 68 has a lower portion of diameter that is substantially smaller as it extends upwardly from the inner side surface 62 of the lower side recess 60, a diametrally elongated top portion 68b extending upwardly through the upper side 48 of the slide member. of wear 18, and a portion of intermediate surface inclined downward and inwardly 68c annular positioned between the opening portions 68a, 68b. With the base member welded to the surface 12 as illustrated in Figures 3 and 5, the bolts 20, with their hexagonal heads 70 facing downward, slide into the grooves of the cut base member 38 until the vertically oriented bolt bodies 20a reach the inner ends of the grooves 38 and the adjacent pairs of angled side edge surfaces 70a of the bolt heads 70 (see Figure 70) that additionally engage the angled internal end faces 40 (see Figures 5). and 6) of their associated undercut grooves 38. with the bolts 20 in this position, the upper end portions of their bodies 20a project upwardly through the undercut grooves 38 as best illustrated in Figure 2.

Next, the copedcra dv length 18, down the bottom side, is placed on base member 16 (see Figure 2) in an anemia such that the wear slide member 18 is telescoped down on the member. of base 16 cn the lower side 50 of the wear member 18 which is cuitiguous with the surface 12, the locating projections of the base member 42 which are upwardly and are received in complementary manner in the depressions of the wear slide member 64 (see FIG. 3), the wear indicator recess 66 which overlies the central opening 66 in the base member and the upper end portions of bolt bodies 20a extend upwardly through the opening portions' of the wear slide member circularly transverse 68a, 68c within the opening portions 68b as best illustrated in Figure 2. Finally, the nuts 22 are secured on the upper ends of the cranks. bolt members 20a, which are recessed downwardly within the opening portions of the upper wear slide member 68b so that the conically tapered annular side surfaces 22a (see Figure 8) of the nuts 22 firmly engage the shaped inclined annular surfaces in a complementary manner in the opening portions of the wear slide member 68c. This operation places i emoviblemc.ni. the dosqa member: that of coi redera 1 »on the welded base member 16 in a manner that protrudes a portion of the surface 12 from abrasion wear. The previously described coupling of the pairs of bolt head surfaces 70a (see Figure 7) with the opposing angled pairs of the end surfaces of groove 40 (see Figures 5 and 6) advantageously avoids the bolts turning while the nuts 22 they are being wound operatively on the bolt bodies 20a. The operating forces imposed on the installed wear slide member 18, parallel to the surface 12 (which would otherwise tend to subject the bolt bodies 20a to shear stress) are supported by the base member 42 of the locator recesses 42. Therefore, a simple bolted installation of the wear slide member 18 is achieved, wherein the installation movement of the wear slide member 18 is transverse to the surface 12 to be protected. Conventional wear slide members slide over their underlying welded bases (typically using a dovetail joint between them) in a direction parallel to the surface 12. This undesirably requires that a substantial gap be left between adjacent pairs of wear slide assemblies. However, in the present invention, the adjacent pairs of elementary slide assemblies 10 can be substantially spliced one against the other since the wear slide members are installed transversely to the surface 12 to be protected n of a direction parallel to it. The advantage provided by the wear slide assembly 10 compared to conventional wear slide assemblies is that it is not necessary in the present invention to form bolt holes in the excavation bucket portion 14 (or other apparatus) on which is placed the surface 12 to be protected.In other words, the bolts 20 do not need to extend through any portion ~ of the bucket, the bolts 20 are installable by sliding them, parallel to the surface within the base grooves 38. This elimination of the need to form bolt holes in the excavation bucket also eliminates the resultant weakening of the bucket portion in which the bolt holes were formed, eliminates the need to provide access to the opposite side of the bucket portion on which the assembly 10 is mounted to operatively pass the bolts through the bolt holes in the structure of the bucket, and also makes the installation of the wear slide member 18 to be an appreciably faster and easier process. - As the upper side 48 of the installed wear slide member 18 is worn, the countersunk nuts 22 and the upper bolt body ends are protected from abrasion wear. When the ablation wears a sufficient portion of the upper side of the wear slide member 18, the interior of the wear indicator recess 66 is exposed to thereby give a visual indication to the operator that it is time to remove and replace the wear member. used wear slide 18. This is done by simply removing the nuts 22 and pulling the worn wear slide member 18 out of the underlying bumper member 16 in a direction perpendicular to the surface 12. The upper side of the wear indicator recess 66 can, as shown, be generally positioned flush with the upper ends of the bolt bodies 20a or slightly above the upper ends of the bolt bodies 20a. While the illustrated wear slide member 18 ---- is illustrated being removably supported on the underlying base member 16 by a pair of bolts 20, those skilled in the art will readily appreciate that a greater or lesser number of bolts or other types of fastening structures could be used alternatively for this purpose if desired. 1 ?.

As an example of an alternate clamping structure usable for releasably retaining the wear slide 18 on the underlying base member 16, the undercut grooves 38 can be removed, and the threaded openings formed in the base member 16 and positioned for be subjacent to the wear slide member opening portions 68a. The bolts (not shown) could extend downwardly from the openings of the wear slide member 68 and be threaded into the underlying threaded openings in the base member 16. As well as the use of the illustrated bolt and nut assemblies 20, 22 this would provide fastening means that are positioned entirely away from the surface 12 and are operative to releasably support the wear slide 18 on the underlying base member 16. The above detailed description will be clearly understood to be given by way of illustration only and For example, the spirit and scope of the present invention are limited only by the appended claims.

Claims (1)

10 CLAIMS 1. An apparatus for protecting a surface from wear, characterized by comprising: a base member having an internal member which is insurable to the surface, and an external side opposite to the inner side; opening means formed in the base member for receiving a head portion of a bolt which moves through said opening means in a direction parallel to the inner side, and for captively retaining the bolt head portion received in an orientation in which the body of the bolt extends longitudinally transversely to said inner side and outwardly through the opening means passing said inner side; a wear member having an opening therein and mounted on the base member by moving the base member transversely towards the outer side of the base member in a manner that causes the bolt body to be captively retained; extending through the opening of the base member for connection to a retaining nut to releasably prevent removal of the wear member from the base member in a direction transverse to the inner side; and cooperating means on the base member and the wear member to interlock the wear member mounted with the base member in a manner that avoids the apiiable movement of the wear member mounted in relation to the base member parallel to said wear member. inner side of the member of b se--. 2. 11 apparatus in accordance with the claim 1, characterized by the cooperating means include: a recess formed in one of the base member and the wear member; and a projection formed in another of the base member and the wear member and which is received in addition in said recess. 3. The apparatus in accordance with the claim 2, characterized in that: said recess is formed in the wear member, the projection is formed on the base member. The apparatus according to claim 1, characterized in that: the opening means includes a groove for undercutting formed in the base member, which extends longitudinally parallel, said outer bounded opening, and which opens laterally outwardly through from the external side. The apparatus according to claim 4, characterized in that: the base member has a side edge portion extending between the inner and outer sides, and the undercut groove opens outwardly through a portion of lateral edge. 6. The apparatus in accordance with the claim 4, characterized in that: the undercut groove has an internal end configured to additionally engage a lateral edge surface area of the bolt head portion in a manner that inhibits rotation of the bolt about its longitudinal axis relative to the member of base. The apparatus according to claim 1, characterized in that: the opening means in the base means are placed therein to be subjacent to the opening in the wear member when the wear member is mounted on the member of base. 8. The apparatus according to claim 7, characterized by: the opening in the wear member, has a tapered annular portion positioned and configured to be forcefully coupled by a tapered annular side portion, additionally configured of a threaded conical nut operatively on the bolt body. 9. The apparatus according to claim 1, characterized in that: the wear member has an external side, and an internal side as a wear indicator recess formed therein. 10. Apparatus for protecting a surface from wear, characterized in that it comprises: a base member having an internal side insurable to the surface, and an external side opposite to the internal side; a bolt having a body portion with a first end, and a second end having a head portion therein; the base member having a first opening therein configured to captively retain the head portion of the bolt on the base member, with the body portion of the bolt extending transversely to the inner side and said first end and bolt positioned outwardly from the outer side, in response to movement of the head portion through the first opening in a direction generally parallel to the inner side; A wear member having a second opening therein, the wear member can be mounted on the base member by moving the base member transversely to the outer side of the base member in a manner that causes the end pin captively retained bolt extends through the second opening, the base member and the wear member having interlocking portions therein, in a manner that restricts the movement of the wear member relative to the base member parallel to the inner side, in response to the mounting of the wear member on the base member; and a threaded nut on the first end of the bolt to releasably prevent replacement of the wear member from the base member er. a direction parallel to the body portion of the captively held bolt. The apparatus according to claim 10, characterized in that the cooperating portions include: a recess formed in one of the base member and the wear member, and a projection formed in the other base member and the wear member and it is received in addition in the recess. 12. The apparatus according to claim 11, characterized in that: the recess is formed in the wear member, and the projection is formed on the base member. 3. The reference apparatus with claim 10, character because: the first opening is defined by an undercut groove formed in the base member, which extends longitudinally parallel to the outer side of the base member, and which opens laterally out through the outer side of the base member. The apparatus according to claim 13, characterized in that: the base member has a side edge portion extending between the inner and outer sides, and the undercut groove opens outwardly through the edge portion. side. The apparatus according to claim 13, characterized in that: the undercut groove has an inner end configured to additionally couple a lateral edge surface area of the head portion of the pin in a manner that inhibits rotation of the pin around of its longitudinal axis in relation to the base member. 16. The apparatus according to claim 10, characterized in that: the first opening is positioned to be subjacent to the second opening when the wear member is mounted on the base member. 17. The matching apparatus with claim 16, characterized in that: the nut is a conical locking nut having a surface; side tapered annular, and the second aperture has a tapered annular position, positioned and configured to be engaged in a forced and complementary manner by the tapered annular lateral surface of the conical locking nut when the conical locking nut is operatively threaded onto the pin with the wear member mounted on the base member. 18. The apparatus according to claim 10, characterized in that: the wear member has an outer side, and an inner side with a wear indicator recess formed therein. 19. A wear slide assembly for use in the protection of an abrasion wear surface, the wear slide assembly is characterized in that it comprises: a base member having an internal side insurable to the surface and an opposite external side to the internal side; a detaching member which can be mounted on the base member by moving the wear member transversely to the outer side of the base member; and fastening means, completely removable from the surface to releasably support the base member on the base member, the fastening means including a fastening member extending through the wear member and the base member along an axis transverse to the surface, the base member and the wear member having intertratable portions which, with the inner side of the base member secured to the surface and the wear member mounted on the base member , cooperate to prevent appreciable movement of the wear member relative to the base member parallel to the surface. The wear slide assembly according to claim 19, characterized in that: the base member and the wear member, respectively, have first and second openings therein positioned to receive the clamping member when the member is mounted about the base member. The wear slide assembly according to claim 20, characterized in that: the fastening member is configured to be lowered into the first opening when the fastening member is operatively received in the first and second openings. 22 The wear slide assembly according to claim 21, characterized in that: the clamping member is a bolt. 23. An apparatus for handling the material characterized in that it comprises: a surface subjected to wear during the use of the material handling apparatus; and a wear slide assembly mounted on the surface and operative to protect a portion thereof from wear, the wear slide assembly including: a base member having an inner side secured to the surface and an outer side opposite the inner side, a wear member mounted on the base member, the wear member which is mountable on the base member moving the wear member transversely towards the outer side of the base member, and fastening means, positioned entirely out of the surface to releasably support the wear member on the base member, the fastening members including a clamping member extending through the wear member and the base member along the transverse axis to said surface, the base member and the wear member having releasably interlocked portions, which operate to prevent appreciable movement of the wear member relative to the base member parallel to said surface. 24. The material handling apparatus according to claim 23, characterized by: the material handling apparatus is an excavation bucket. 25. The material handling apparatus according to claim 23, characterized by: the base member and the wear member, respectively have first and second openings receiving the fastening member. 26. The material handling apparatus according to claim 25, characterized in that: the clamping member is recessed with the second opening. 27. The material handling apparatus according to claim 26, characterized in that: the clamping member is a bolt. The material handling apparatus according to claim 27, characterized in that: the bolt has a head portion and a body portion, the first opening is defined by an undercut groove formed in the base member, the portion The bolt head is held captively in the undercut groove, with the body portion extending into the second opening, and fastener means that further include a nut placed in the second opening and threaded onto the body member. said bolt. SUMMARY A wear slide assembly is attached to a surface of an excavation bucket and serves to protect a portion of the abrasion wear surface during bucket use. The assembly includes a base member, a wear slide member, a pair of bolts and a pair of conical locknuts. The base member is welded to the surface and has a pair of undercut grooves that captively retain the head portions of the bolts, with the bolt bodies that are transverse to the surface and project outwardly beyond the side. external of the base member. The wear slide member is mounted on the base member by moving the wear slide member toward the base member in a direction transverse to the surface in a manner that causes the bolt body projecting outwardly between and lowered within a pair of openings formed through the wear member, and also causing the projections of the base member to be received complementarily within the recesses formed in the wear slide member. Finally, the conical locknuts are screwed onto the lowered pin bodies within the wear slide member to releasably hold the wear slide member on the base member. The intertraining between the projections of the base member and the recesses of the wear slide member, prevents operational loads imposed on the assembly from moving from the wear slide member relative to the base member parallel to the protected surface to avoid This way the bolts are subjected to shear stress by such operational loads.