EP0414345A2 - Verschleissteile für ein Baggergerät - Google Patents

Verschleissteile für ein Baggergerät Download PDF

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Publication number
EP0414345A2
EP0414345A2 EP90306135A EP90306135A EP0414345A2 EP 0414345 A2 EP0414345 A2 EP 0414345A2 EP 90306135 A EP90306135 A EP 90306135A EP 90306135 A EP90306135 A EP 90306135A EP 0414345 A2 EP0414345 A2 EP 0414345A2
Authority
EP
European Patent Office
Prior art keywords
shroud
wear
bucket
vertical
edge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP90306135A
Other languages
English (en)
French (fr)
Other versions
EP0414345A3 (en
Inventor
Howard W. Robinson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GH Hensley Industries Inc
Original Assignee
GH Hensley Industries Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GH Hensley Industries Inc filed Critical GH Hensley Industries Inc
Publication of EP0414345A2 publication Critical patent/EP0414345A2/de
Publication of EP0414345A3 publication Critical patent/EP0414345A3/en
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2808—Teeth
    • E02F9/2816—Mountings therefor
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2808—Teeth

Definitions

  • Present invention relates generally to ground engaging appa­ratus including loaders and excavators, and more particularly provides a unique assembly for installation on buckets or shovels (hereinafter “bucket”) of such apparatus to prevent wear on cer­tain parts of the bucket and to enable those parts of the bucket that are subject to wear to be economically replaced.
  • bucket buckets or shovels
  • the present invention provides a wear assembly comprising replaceable wear shrouds, which protect the lip of the bucket and the underside of the teeth-mounting adapters and in which the two fastest wearing parts of the assembly, the excavating teeth and the shrouds, are detachable for easy and speedy replacement, but in which these parts are securely held on the bucket so the risk of either dropping off, in use, is minimized.
  • a wear assembly for a bucket of an exca­vation apparatus comprising: a wear plate which, in use, is secured to the bucket and provides a forward lower lip of the bottom wall of the bucket; a plurality of adaptors mounted at spaced apart locations on the forward edge of the wear plate; a plurality of hollow, replaceable, excavating teeth, a plurality of wear shroud means, each mounted on the for­ward edge of the wear plate, said wear shroud means each occupy­ing the space between adjacent adapters and having a lower sur­face disposed in the same plane as the lower surface of the exca­vating teeth, and covering the bottom of the adjacent adapters, to provide a wear bearing, lower surface for the bucket.
  • the present invention also provides a wear part assembly for protecting a working edge of a ground engaging apparatus, such as an excavator or loader comprising: a plurality of adapters, each having a forwardly extending nose, two pairs of upper and lower laterally-extending wedge-shaped flanges and a rearwardly extending mounting portion; a plurality of hollow, excavating teeth, each removably mounted on the forwardly extending nose of a respective adapter; a plurality of wear protecting shrouds, each including upper and lower spaced-apart, lateral ears defining between them a wedged-shaped channel adapted to engage the said wedge-shaped flanges; first pin means detachably securing the shrouds between the flanges of adjacent adapters; and second pin means securing each tooth on its respective adapter.
  • the present invention in another aspect also provides: a wear part assembly for protecting the working edge of excavation apparatus, such as a bucket, comprising: a plurality of adaptors, each having a forwardly extending nose, two pairs of upper and lower laterally-extending wedge-shaped flanges and a reasonably extending mounting portion flanges; a plurality of hollow, excavating teeth, each removably mounted on the forwardly extending nose of a respective adaptor; a plurality of wear protecting shrouds, each including upper and lower spaced-apart, lateral ears defining between them a wedged-shaped aperature adapted to engage the upper and lower surface of the wedge-shaped flanges; first pin means detachably securing the shrouds between the flanges of adjacent adaptors; and second pin means securing each tooth on its respective adaptor.
  • the present invention also provides: a wear assembly for protecting the vertical edge of a bucket of a ground engaging tool comprising : a lower vertical shroud detachably mounted on and surround­ing the vertical edge of the bucket and restrained at its lower end against movement away from the vertical bucket edge by engagement between a lower extremity of the lower vertical shroud and an adapter for an excavating tooth; a generally horizontal aperture in the upper end of the ver­tical shroud; a mounting plate secured to the vertical bucket edge and engaging at its lower end an upper end of the lower vertical shroud and having an aperture which, in use, is in register with the aperture in the lower vertical shroud; flexible pin means secured in the registering apertures in the lower vertical shroud and the mounting plate; at least one upper vertical shroud, detachably secured to and surrounding the vertical edge of the bucket, having a lower extremities, which is complementary, in shape, to the shape of the upper extremity of the lower vertical shroud, and an upper extremity which is the same shape as the upper extrem
  • the wear plate assembly com strictlyprises, for example, a 21 ⁇ 2 inch thick, steel plate 10 which, in plan, has a straight rear edge 11 having a chamfered top edge (not shown).
  • the sides of the plate 10, in this form of the invention converge slightly inwardly to meet a stepped, forward edge 17 of the plate 10, forming a lip for an excavating tool, and having a shape that is frequently referred to in the art as a clip "V" blade.
  • the forward edge 17 includes four adapter-receiving portions 19, which are aligned parallel to the rear edge 11, a center por­tion 21 at the widest part of the plate 10 and two outer portions 22.
  • the forward edge 17 of the plate 10 includes six angled portions 23 which extend at an angle of, for example, about 20 degrees to the rear edge 11 and interconnect the adja­cent adapter-receiving portions 19 and the outer portions 19 to the outer portions 22.
  • the angled portions 23 receive, as will be explained in more detail below, angled lip protector wear shrouds 25.
  • a center lip protector wear shroud 27 is mounted on the center portion 21 of the forward edge 17 of the plate 10.
  • the wear plate assembly further includes six center adapters 29 mounted on the forward edge 17 of the plate lip 10.
  • Four of the center adapters 29 are mounted on the adapter-receiving por­tions 19 and two are mounted on the center portion 21 at each end thereof and on either side of the center shroud 27.
  • Two corner adapters 31 are mounted respectively on the two outer ends of the forward edge 17 of the plate 10.
  • a hollow excavating tooth 33 is mounted on each adapter 29, 31.
  • left and right side vertical shroud assemblies 35 (Fig. 3), each of which comprises an upper vertical shroud 37 and a lower vertical shroud 39 interconnected by a vertical shroud mount 41.
  • the detailed construction and configuration of the vertical shroud assemblies 35 will be described in greater detail below.
  • the wear plate assembly includes six center adapters 29, shown in detail in Figures 4, 5 and 6, which are mounted on the adapter-receiving portions 19 and on the cen­ter portion 21 of the forward edge 17 of the plate 10, and two corner adapters 31, shown in detail in Figures 7 and 8, which are mounted on the outer extremes of the forward edge 17 of the plate 10.
  • each adapter 29 comprises a solid body 51 having a forwardly extending nose 53 on which, in use, a hollow excavating tooth 33 is secured, and a rearwardly extending hollow elongate mounting section 55 which comprises upper and lower, spaced apart, limbs 57 and 59 respectively defining between them a throat 58 which, in use, receives the forward edge 17 of the plate 10.
  • Extending from either side of the adapter body 51 are wedge-shaped lateral flanges 61 which are disposed, as shown in Fig. 5, with their greater dimension towards the edge 17.
  • each of the limbs 57 and 59 is rebated to provide a curved bearing surface 63 on each limb.
  • the flanges 61 are engaged by the adjacent shrouds 25 or 27, in a manner to be described in more detail below and as indicated in Figure 6.
  • the corner adapters 31, shown in Figs. 7 and 8, are substan­tially similar to the center adapters 29 and each comprises an adapter body 51, a nose 53 on which, in use, an excavating tooth 33 is secured, and a mounting section 65.
  • the mounting section 65 is solid, with longitudinally extending lateral flanges 67 by the inner one of which the corner adapter 31 is secured to the plate lip 10.
  • each corner adapter 31 has lateral flanges 69 which, in use, are connected to the adjacent angled lip protector shroud 25, as best shown in Figure 8.
  • the hollow excavating teeth 52 which generally are of well known construction, are mounted on each respective adapter, using a locking pin described in more detail below.
  • the teeth 52 have on their sides wedge-shaped ribs, which when the invention is assembled, project across the front of the lateral ears of the shrouds further securing the shrouds in position on the bucket lip 10.
  • the wear plate assembly includes six angled lip protector shrouds 25, shown in Figures 11 and 12, and a center lip protector shroud 27, shown in Figures 9 and 10.
  • the center shroud 27 com­prises a main body 71 having a forwardly directed wedge-shaped nose 73 and a rearwardly extending base 75 which projects beyond the rear end of the nose 73 and has four upstanding ribs 77.
  • the nose 73 has, on each side, an upper, laterally extending ear 74 and the base 75 provides corresponding lower, laterally extending ears 76.
  • the upper ears 74 have apertures 79 extending vertically therethrough which register with vertically extending apertures 81 in the lower ears 76, as best seen in Figure 10.
  • the angled lip protector shrouds 25 are essentially similar to the center lip protector shroud 27.
  • Each comprises a main body 71, a wedge-shaped forwardly facing shroud portion 73, a rearwardly extending base 75 with four upstanding ribs 77 and lateral ears 74 and 76.
  • Registering apertures 79 and 81 are provided in the nose 73 and ears 74 and 76, as in the case of the center shroud 27.
  • each angled shroud 25 are essen­tially offset from the lateral ears 74 and 76 by the amount necessary to conform to the angle that the angled portion 23 makes with the forward edge 17 of the plate 10.
  • the lateral ears 74 and 76 are directed so as to be parallel to the rear edge 11 of the plate 10 and to mate with the adjacent adapter 29, or 31, on the forward edge 17 of the plate 10, as shown in Fig. 12.
  • the center lip protector shroud 27 is mounted on the forward edge 17 of the plate 10 between the two inner adjacent center adapters 29.
  • the rear edge of the nose 73 is adjacent the forward edge 17 of the plate 10, and three points of contact, at the zones indicated at A, B, and C in Fig 4, 5, 9 and 10, are made between the shroud 27 on the one hand and the adapter 29 and wear plate 10 on the other hand: the ribs 77 of the shroud 27 make contact at C with the underside of the plate 10 well to the rear of the forward edge 17 of the plate 10.
  • the underside of the upper ears 74 make contact with a zone B towards the rear of the top surface of the flange 61 of the adapter 58. As seen in Fig.
  • the zone B slope upwardly and rearwardly.
  • the third point of contact A is on the underside of the flange 61, towards its front.
  • the zone A slopes downwardly and rearwardly.
  • the contact surfaces on the adapter 29 are each angled with respect to the contact surface C.
  • the angled shrouds 27 are mounted between the adjacent adapter with essentially the same contact geometry, so that their rear por­tions are held securely against the underside of the plate 10 during use by similar reaction forces generated by three points of contact.
  • FIG. 3 One of the vertical shroud assemblies 35 is shown in Fig 3 and it will be understood that a similar, mirror image, assembly 35 is provided to protect the other vertical cheek of the bucket.
  • the lower vertical shroud 39 of the assembly 35 is essen­tially U-shaped in horizontal section and is mounted on and sur­rounds the side check of the bucket.
  • the shroud 39 has at its lower end a forked extremity 111 which engages on either side of a protruberance 113 upstanding from the upper surface of the corner adapter 31.
  • the engagement between the extremity 111 and the protruberance 113 restrains the shroud 39 against forward movement.
  • Rearward movement of the shroud 39 is restrained by contact between an inner surface 115 of the shroud and a forward surface 117 of the corner adapter 31.
  • the vertical edge of the bucket is not shown in Fig 3, but would lie on the dotted line 118.
  • the vertical shroud assembly is mounted on the bucket by means of the vertical shroud mount 41 which is secured, as by welding, to the bucket.
  • the mount 41 fitts inside the upper end of the lower shroud 39 and rests with its lower surface on an angled inner surface 119 of the shroud 39.
  • the shroud 39 and mount 41 have aligned apertures 121 and are secured together by means of a flexible pin 91, described in more detail below.
  • each upper vertical shroud 37 has a shape complementary to its lower end and has an aperture 113 that registers with the aperture 121 in a second mount 41 which is welded to the bucket edge.
  • the mounts 41 and upper vertical shrouds 37 are also essen­tially U-shaped in cross-section to wrapp around the bucket edge and protect it from wear. Because the upper and lower ends of the upper shrouds 37 are complementary in shape as many of them as may be needed are juxtaposed to protect the vertical edge of the bucket and are secured thereon by mounts 41.
  • Each flexible pin 91 comprises a body 93 having raised ends 95 defining between them a housing 97 for a rubber insert 99 for example of durometer 80 neoprene located in place by upstanding ribs 101 in the interior of the body 93 extending into the interior housing 97.
  • the flex­ible pin 91 is completed by a retaining member 103 which is adapted to fit between the ends 95 of the body 93 and to cover the outer edge of the rubber insert 99.
  • the retaining member 103 can be forced towards the body 93 compressing the rubber insert 99 and allowing the flexible pin 91 to be inserted into the appatures in the tooth and adapter, or the adapter and wear shroud. Once inserted, the resilience of the rubber insert 99 forces the retaining member 103 away from the body 93 securing the pin 91 in place and holding the parts of the wear plate assembly together. As will be appreciated, the expansion of the pin 91 acts to force each wear shroud 25, 27, onto its respective adapter 29, 31 further securing the shrouds.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)
EP19900306135 1989-06-06 1990-06-06 Wear parts for excavation apparatus Withdrawn EP0414345A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US36270289A 1989-06-06 1989-06-06
US362702 1989-06-06

Publications (2)

Publication Number Publication Date
EP0414345A2 true EP0414345A2 (de) 1991-02-27
EP0414345A3 EP0414345A3 (en) 1991-09-11

Family

ID=23427181

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900306135 Withdrawn EP0414345A3 (en) 1989-06-06 1990-06-06 Wear parts for excavation apparatus

Country Status (3)

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EP (1) EP0414345A3 (de)
AU (1) AU641163B2 (de)
CA (1) CA2018309C (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2279678A (en) * 1993-07-02 1995-01-11 Caterpillar Inc Bucket base edge protector assembly
WO2011075782A1 (en) * 2009-12-24 2011-06-30 Cqms Pty Ltd A wear assembly for an excavator bucket
JP2014062451A (ja) * 2012-09-21 2014-04-10 Liebherr-Mining Equipment Colmar Sas 土木機械のバケットのウィングシュラウド、バケット、および土木機械
WO2015069400A1 (en) * 2013-11-07 2015-05-14 Caterpillar Inc. Bucket lip protection assemblies and lip adapters for same

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993005245A1 (en) * 1991-09-10 1993-03-18 Caterpillar Inc. Retaining mechanism for a tooth assembly
CN112064591A (zh) * 2020-08-11 2020-12-11 黄河水利水电开发总公司 一种装配型闸门底缘结构及其修补方法
CN115506445B (zh) * 2022-09-06 2023-10-31 江苏徐工国重实验室科技有限公司 一种刃板保护组件及其制备方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3851413A (en) * 1971-08-23 1974-12-03 Caterpillar Tractor Co Quick change cutting edge

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3851413A (en) * 1971-08-23 1974-12-03 Caterpillar Tractor Co Quick change cutting edge

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2279678A (en) * 1993-07-02 1995-01-11 Caterpillar Inc Bucket base edge protector assembly
GB2279678B (en) * 1993-07-02 1996-06-19 Caterpillar Inc Bucket base edge protector assembly
WO2011075782A1 (en) * 2009-12-24 2011-06-30 Cqms Pty Ltd A wear assembly for an excavator bucket
CN102667016A (zh) * 2009-12-24 2012-09-12 昆士兰中部矿业供应有限公司 用于挖掘机挖斗的耐磨组件
AU2010336025B2 (en) * 2009-12-24 2015-06-04 Cqms Pty Ltd A wear assembly for an excavator bucket
AP3321A (en) * 2009-12-24 2015-06-30 Cqms Pty Ltd A wear assembly for an excavator bucket
US9091042B2 (en) 2009-12-24 2015-07-28 Cqms Pty Ltd Wear assembly for an excavator bucket
JP2014062451A (ja) * 2012-09-21 2014-04-10 Liebherr-Mining Equipment Colmar Sas 土木機械のバケットのウィングシュラウド、バケット、および土木機械
WO2015069400A1 (en) * 2013-11-07 2015-05-14 Caterpillar Inc. Bucket lip protection assemblies and lip adapters for same
US9404240B2 (en) 2013-11-07 2016-08-02 Caterpillar Inc. Bucket lip protection assemblies and lip adapters for same

Also Published As

Publication number Publication date
CA2018309C (en) 2001-05-08
CA2018309A1 (en) 1990-12-06
AU641163B2 (en) 1993-09-16
AU5628490A (en) 1990-12-13
EP0414345A3 (en) 1991-09-11

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