System and method for producing a precisely fitting attachment blade and a corresponding excavator scoop

Abstract

A system and a method configured to produce a precisely fitted attachment blade and a corresponding excavator scoop and templates configured to produce a precisely fitted attachment blade and a corresponding excavator scoop. Thus a transportation requirements to a construction site can be significantly reduced. Furthermore attachment blades for particular excavator scoops can be produced quickly for particular excavator scoops and excavator scoops can be configured with tooth holders. Furthermore existing attachment blades and excavator scoops can be regenerated quickly when service is required.

Claims

1. A system configured to produce a precisely fitted attachment blade and a corresponding excavator scoop, the system comprising: a bucket and a cutting element that is disengageable from the bucket, wherein the attachment blade includes the cutting element and at least two first tooth attachments attached at an external top surface of the cutting element that is oriented towards a pivot of the excavator scoop, and wherein the excavator scoop includes the bucket and at least two first tooth holders that correspond to the at least two first tooth attachments of the attachment blade; at least one reusable first template for aligning the at least two first tooth attachments at the cutting element, wherein the at least one reusable first template for aligning the at least two first tooth attachments is not an excavator scoop, wherein the at least one reusable first template for aligning the at least two first tooth attachments includes a number of second tooth holders that corresponds to a number of the at least two first tooth attachments, and wherein the number of the second tooth holders is attached at an external top surface of the at least one reusable first template that is oriented towards the pivot of the excavator scoop; and at least one reusable second template for aligning the at least two first tooth holders at the bucket, wherein the at least one reusable second template for aligning the least two first tooth holders is not an attachment blade, wherein the least two first tooth holders are arranged at a predetermined distance from each other, wherein the at least one reusable second template for aligning the least two first tooth holders includes a number of second tooth attachments that corresponds to the number of the tooth holders to be aligned, wherein the second tooth attachments are arranged at a predetermined distance from each other, wherein the second tooth attachments attached at an external top surface of the at least one reusable second template that is oriented towards the pivot of the excavator scoop, and wherein the at least one reusable first template for attaching the at least two tooth attachments and the at least one reusable second template for attaching the tooth holders at the bucket are integrally provided as a uniform one-piece reusable template.

2. The system according to claim 1, wherein the second tooth holders of the at least one reusable first template are attached at a common first base, or wherein the second tooth attachments of the at least one reusable second template for aligning the at least two first tooth holders are attached at a common second base, and wherein the common first base and the common second base are integrally provided in one piece.

3. The system according to claim 1, wherein all second tooth attachments on the at least one reusable second template for producing the excavator scoop are arranged parallel to one another with their longitudinal axes, and wherein all second tooth holders on the at least one reusable second template for producing the attachment blade are arranged parallel to each other with respect to their longitudinal axes.

4. A method for producing a precisely fitted attachment blade and a corresponding excavator scoop, the method comprising the steps: using a system including: a bucket and a cutting element that is disengageable from the bucket, wherein the attachment blade includes the cutting element and at least two first tooth attachments attached at an external top surface of the cutting element that is oriented towards a pivot of the excavator scoop, and wherein the excavator scoop includes the bucket and at least two first tooth holders that correspond to the at least two first tooth attachments of the attachment blade; aligning the at least two first tooth attachments at the cutting element using the at least one reusable first template, wherein the at least one reusable first template for aligning the at least two first tooth attachments is not an excavator scoop, wherein the at least one reusable first template for aligning the at least two first tooth attachments includes a number of second tooth holders that corresponds to a number of the at least two first tooth attachments, and wherein the number of the second tooth holders is attached at an external top surface of the at least one reusable first template that is oriented towards the pivot of the excavator scoop; and aligning the at least two first tooth holders at the bucket using the at least one reusable second template, wherein the at least one reusable second template for aligning the least two first tooth holders is not an attachment blade, wherein the least two first tooth holders are arranged at a predetermined distance from each other, wherein the at least one reusable second template for aligning the least two first tooth holders includes a number of second tooth attachments that corresponds to the number of the tooth holders to be aligned, wherein the second tooth attachments are arranged at a predetermined distance from each other, wherein the second tooth attachments attached at an external top surface of the at least one reusable second template that is oriented towards the pivot of the excavator scoop, and wherein the at least one reusable first template for attaching the at least two tooth attachments and the at least one reusable second template for attaching the tooth holders at the bucket are integrally provided as a uniform one-piece reusable template.

5. The method according to claim 4, further comprising the steps: producing the at least one reusable first template for aligning the at least two first tooth attachments and the at least one reusable second template for aligning the at least two first tooth holders so that the at least two first tooth attachments are laterally centrally arrangeable on the corresponding tooth holders of the at least two first toot holders, wherein the at least one reusable first template and the at least one reusable second template are produced by welding the at least two first tooth attachments and the at least two first tooth holders down.

6. The method according to claim 4, wherein the at least one reusable first template for attaching the at least two first tooth attachments is produced so that a height of the first base is exactly the same as a height of a bucket base and a height of the second base is exactly the same as a height of the cutting element.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Characterizing features and further advantages of the instant invention are subsequently described based on an advantageous embodiment with reference to drawing figures, wherein

(2) FIG. 1 illustrates the system according to the invention;

(3) FIGS. 2A, 2B illustrate the excavator scoop according to the invention with an attachment blade that is produced according to the invention and individual tooth attachments in different applications; and

(4) FIG. 3 illustrates the excavator scoop produced according to the invention with the attachment blade produced according to the invention attached according to FIG. 2A in a cross sectional view.

DETAILED DESCRIPTION OF THE INVENTION

(5) FIG. 1 illustrates the system 1 according to the invention. It is evident that the system 1 includes a template 3 for attaching the tooth attachments 5 at a cutting element 7 and a template 9 for attaching the tooth holders 11, 11, 11 at a bucket 13. The system 1 furthermore includes bolts 15 for connecting the tooth attachments 5 and the tooth holders 11 with the respective template 3, 9. Instead of the bolts 15 also wedges and similar can be used.

(6) The template 3 includes a base 17 at which tooth holders 19 are arranged at a uniform lateral distance of 250 mm with reference to the center of the tooth holders 19 by welding. The base 17 has a contact edge 21.

(7) The template 9 has a base 23 at which tooth attachments 25 are arranged at a uniform lateral distance of 250 mm with reference to the center of the tooth attachments 25 by welding. The base 23 also has a contact edge 27.

(8) In order to produce the templates 3, 9 the base 17 was initially configured with the tooth holders 19 wherein the tooth holders 19 are arranged parallel to each other with their longitudinal axes 29 and arranged offset relative to each other with their centers by 250 mm respectively. The base 17 has a lateral extension that is 250 mm greater than the width of the cutting edge 31 of the bucket of 750 mm. The two outer tooth holders 33, 35 then have been arranged on the base 17 so that their centers are respectively arranged at a dimension of 125 mm or 875 mm with reference to a lateral extension of the base 17. Thereafter the base 17 was welded together with the tooth holders 19.

(9) The template 3 thus generated was then used for producing the template 9. Thus, the base 23 has the same lateral extension as the base 17. The tooth attachments 25 were then applied to the corresponding tooth holders 19 and fixed by the bolts 15. Thus, the tooth attachments 25 are respectively centrally aligned in a lateral direction with reference to the tooth holders 19 in order to use the existing tolerance in an optimum manner. The contact edge 21 of the base 17 is then brought in contact with the contact edge 27 of the base 23 and the base 23 is welded together with the tooth attachments 25. Subsequently the bolts 15 were removed again and the template 9 was removed.

(10) The fabricated templates 3, 9 are now being used as follows. Using the template 9 the tooth holders 11, 11, 11 are precisely aligned at the bucket 13, thus the tooth holders 11, 11, 11 are laterally centrally arranged in the tooth attachments 25 and fixed by the bolts 15. Subsequently the tooth holders 11, 11, 11 are arranged at the bucket 9 using the template 9 so that the stop edge 27 contacts the cutting edge 31. In order to envelop the side lobes 37 of the bucket with the tooth holders 11, 11, the side lobes are provided with corresponding transversal cut outs 39 so that the tooth holders 11, 11 can be applied and welded together with the side lobes 37. Subsequently the tooth holders 11, 11 11 are welded together with the bucket 13, wherein in particular the longitudinal recesses 39 are welded together with the side lobes 37. Subsequently the bolts 15 were pulled out again and the template 9 was removed.

(11) This has generated an excavator scoop 41 (c.f. FIGS. 2a, 2b) which includes tooth holders 11, 11, 11 with a standard arrangement wherein their longitudinal axes are parallel to each other. The outer tooth holders 11, 11 thus protrude beyond the side lobes 37 so that a clearance is provided so that the side lobes 37 are unloaded when the excavator scoop is being used.

(12) In order to produce the attachment blade 43 the tooth attachments 5 are centrally applied to the tooth holders 19 of the template 3 and arrested by the bolts 15. The cutting element 7 is applied with its contact edge 45 to the contact edge 21 of the template 3 and laterally centrally aligned with respect to the template 3. Thereafter the tooth attachments 5 are welded together with the cutting elements 7. The bolts 15 are extracted and the template 3 is removed (c.f. FIG. 2b). Advantageously it is provided however that the cutting element 7 is recessed in the portion of the tooth attachments 5 and the tooth attachments 5 are then inserted into the cutting element 7 and welded together therewith.

(13) The attachment blade 43 (c. f. FIGS. 2a, 2b, 3) thus produced now includes tooth attachments 5 which are spaced according to a uniform standard and arranged parallel to each other with their longitudinal axes, wherein the arrangement is precisely adjusted to the arrangement of the tooth holders 11, 11, 11 of the excavator scoops 41. According to FIGS. 2a, 2b and 3 the excavator scoop 41 thus produced can be combined with individual tooth attachments 47 for digging or with the produced attachment blade 43 for grading. Using the templates 3, 9 provides a precise standardization so that the attachment blade 43 and the excavator scoop 41 are precisely aligned with each other, wherein the cutting edge 31 of the excavator scoops 41 contacts the stop edge 45 of the attachment blade 43 and the basis 49, 51 of the bucket 13 and of the attachment blade 43 are arranged in one plane (c.f. FIGS. 2a and 3).

(14) This is evident in particular from FIG. 3 which shows that the bases 49, 51 of the bucket 13 and the cutting element 7 are adjusted to each other so that they are at one level. Thus resistance during ground processing is significantly reduced. This is facilitated in that the height of the base 23 is exactly the same as the height of the cutting element 7 and the height of the cutting element 7 and the height of the first base 17 is exactly the same as the height of the bucket base 49.

(15) Additionally resistance is significantly improved in that the tooth attachments 5 are arranged in the cutting element 7 and are not only applied thereto. Thus recesses are cut out from the cutting element 7 in order to attach the tooth attachments 5, the tooth attachments 5 are inserted into the recesses and thereafter the tooth attachments 5 are welded together with the cutting element 7.

(16) The latter feature is achieved in that a thicknesses of the cutting element 7 and the base 17 and the base 23 are the same.

(17) Using the templates 3, 9 new excavator scoops 41 and new attachment blades 43 can be easily produced at a construction site or positions of the tooth holders 11, 11, 11 and of the tooth attachments 5 can be corrected precisely fitting or tooth holders 11, 11, 11 and tooth attachments 5 can be replaced precisely fitting when service is required.

(18) In addition to the cited advantages of simplified production and maintenance with minimum stock requirements for essential parts an additional advantage is that much fewer tools have to be provided due to the standardization. Typically when using 3 excavators at a construction site 5 different attachment tools, namely 3 different tooth attachments and 2 different attachment blades have to be provided, thus 15 different tools since the individual excavator scoops are all different models. Now however only 5 different tools are used which fit universally at all 3 excavators. If individual excavators have excavator scoop s with a different operating width than only different attachment blades have to be provided per operating width.

(19) From the preceding description it is evident that the instant invention significantly reduces transport requirements to the construction site. Thus attachment blades for particular excavators are quickly produce able at a construction site and excavator scoops are also retro fit able with tooth holders. Furthermore existing attachment blades and excavator scoops can be reconditioned quickly when service is required.

(20) Unless stated differently all features of the instant invention freely combinable with each other. Also the features described in the figure description unless stated differently can be freely combined with the other features of the invention, Thus instant features of the system and of the templates can also be used as method features and method features can be used as apparatus features.

REFERENCE NUMERALS AND DESIGNATIONS

(21) 1 system

(22) 3 template

(23) 4 attachment blade

(24) 5 tooth attachment

(25) 7 cutting element of attachment blade 43

(26) 9 template for excavator scoop

(27) 11, 11 11 tooth holder

(28) 13 bucket

(29) 15 bolt

(30) 17 base of template 3

(31) 19 tooth holder

(32) 21 stop edge of template 3

(33) 23 base of template 9, second base

(34) 25 tooth attachment

(35) 27 contact edge of template 9

(36) 29 longitudinal axes of tooth holders 19, 22, 25

(37) 31 cutting edge of bucket 13

(38) 33, 35 outer tooth holder

(39) 37 side lobes of bucket 13

(40) 39 transversal cut out in side lobes 37

(41) 41 excavator scoop

(42) 43 attachment blade, attachment cutting edge

(43) 45 contact edge of attachment blade 43

(44) 47 tooth attachment

(45) 49, 51 base of bucket 13 and cutting element 7