GB2337505A - Apparatus for attaching an implement assembly to a stick of a work machine - Google Patents
Apparatus for attaching an implement assembly to a stick of a work machine Download PDFInfo
- Publication number
- GB2337505A GB2337505A GB9908319A GB9908319A GB2337505A GB 2337505 A GB2337505 A GB 2337505A GB 9908319 A GB9908319 A GB 9908319A GB 9908319 A GB9908319 A GB 9908319A GB 2337505 A GB2337505 A GB 2337505A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stick
- aperture
- coupler
- lateral support
- bracket
- 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- Withdrawn
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/3604—Devices to connect tools to arms, booms or the like
- E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
- E02F3/3631—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with a hook and a transversal locking element
Abstract
A work machine 10 includes a stick 14 eg arm, dipper or boom, stick guides 20,22, a link 26 and a coupler 28 for attaching a working implement to the end of said stick. The stick has at one end forward (18 Fig.1) and rear 16 apertures, left and right guide members 20,22 pivotally mounted via a rear pin (56 Fig.1) to said stick and spaced apart so as to define therebetween a rear stick space in which the stick is positioned, a link portion 26 pivotally connected to both of said guide members and a coupler 28, said coupler including left and right lateral support members 30,32 which define therebetween a forward stick space in which the stick is also positioned and being pivotally connected to the stick. The stick may include a sleeve recess (68 fig.1) defined at an end (70 Fig.1) thereof having a stick sleeve (66 Fig.1) positioned within so as to define the forward aperture (18 Fig.1). An implement assembly 36 comprises a bucket 72 having left 38 and right 40 brackets, each incorporating a pair of mounting apertures 46,(47 Fig.2),48,49. Said implement assembly is attached to the stick via a pair of notches (50,52 Fig.1) formed in left and right lateral supports 30,32 of the coupler and a pair of apertures 47,49. The notches engage with an implement pin 44 passing through apertures 46,48. A forward pin 54 passes through left and right apertures (47 Fig.2),49 of the bucket brackets and left and right coupler apertures (62,64 Fig.1) to complete the attachment. An advantage of the construction allows the coupler 28 to be removed so that the implement assembly can be directly attached to the stick by inserting forward pin 54 through aligned left and right bucket bracket mounting apertures (47 Fig.2),49 and forward aperture 18 and inserting the implement pin 44 through aligned left and right mounting apertures 46,48 and the end of the link 26.
Description
2337505
Description
APPARATUS FOR ATTACHING AN IMPLEMENT ASSEMBLY TO A STICK OF A WORK MACHINE Technical Field of the Invention
The present invention relates generally to a work machine having an implement assembly attached thereto, and more particularly to an apparatus for lo attaching an implement assembly to the stick of the work machine.
Background of the Invention
Work machines, such as backhoes, are utilized for various work functions. For example, a backhoe may be used to move large amounts of gravel for a period of time, and then used to dig a hole or a ditch. When the work function of the backhoe is altered as described above, it may be necessary to change the implement attached to the stick assembly of the backhoe in order for the work function to be performed properly. For example, one type of implement may be attached to the stick assembly for scooping and moving gravel, and another type of implement attached to the stick assembly for digging a ditch. Changing from one implement to another is a problem because of the time and labor expended in the changeover.
One approach to addressing the above described problem is to attach a coupler to the backhoe stick assembly and then attach the implement to the coupler. The coupler facilitates the coupling and decoupling between the stick assembly and the implement and thus decreases the amount of time and labor expended to change from one implement to another. 35 However, the design of many couplers and stick assemblies cause serious performance problems for backhoe implements. For example, some couplers limit the rotation of the implement, such as a bucket, relative to the stick assembly as compared to when no coupler is used. Therefore, for certain work functions (e.g. those work functions reuiring a greater degree of rotation of the bucket relative to the stick assembly), it is desirable to remove the coupler and attach the bucket directly to the stick assembly. This removal and attachment process is, of course, time consuming.
In addition to being time consuming, a problem arises when one attaches the bucket to the stick assembly using a coupler for certain work functions and then removes the coupler and attaches the bucket directly to the stick assembly for other work functions. Specifically, the design of many stick assemblies and couplers make it relatively difficult to attach the bucket to the stick assembly without the use of a coupler. For example, some stick assemblies include a stick having a bifurcated end which is designed to attach to the coupler. A problem with th design is that once the coupler is removed from the stick, and the bucket is attached directly to the bifurcat ed end, the bifurcated end is not strong enough to accommodate the mechanical loads transmitted thereto during the performance of a work function. Therefore, in an attempt to address this problem, additional mechanical parts must be attached to the bifurcated end of the stick before the bucket can be attached directly thereto. The incorporation of additional parts is undesirable since it adds mechanical complexity, as well as cost, to the stick assembly.
What is needed therefore is a work machine which overcomes one or more of the above-mentioned drawbacks.
is 1 Disclosure of the Invention
In accordance with a first embodiment of the present invention, there is provided a work machine having a stick assembly which includes (i) a stick having a rear aperture and a forward aperture (ii) a left guide member and a right guide member which are spaced apart from each other so as to define a rear stick space therebetween, the stick being positioned within the rear stick space, and (iii) a link which is pivotally coupled to each of the left guide member and the right guide member. The work machine also includes a coupler which is pivotally coupled to the link, wherein (i) the coupler has a left lateral support and a right lateral support which are spaced apart from each other to define a forward stick space therebetween, (ii) the stick is also positioned in the forward stick space, and (iii) the coupler is pivotally coupled to the stick.
In accordance with a second embodiment of the present invention, there is provided a work machine having a stick assembly which includes (i) a stick having a rear aperture and a forward aperture (ii) a left guide member and a right guide member which are spaced apart from each other so as to define a rear stick space therebetween, the stick being positioned within the rear stick space, and (iii) a link which is pivotally coupled to each of the left guide member and the right guide member. The work machine also includes a coupler which is pivotally coupled to the link, wherein (i) the coupler has a left lateral support and a right lateral support which are spaced apart from each other to define a forward stick space therebetween, (ii) the stick is also positioned in the forward stick space, and (iii) the coupler is pivotally coupled to the stick. The work machine further includes a bucket having a left bracket and a right bracket extending therefrom, wherein (i) the left bracket and the right bracket are spaced apart from each other so as to define a bracket space therebetween, and (ii) each of the left bracket and the right bracket is pivotally coupled to the stick.
Brief Description of the Drawings
FIG. 1 is a fragmentary perspective view of a portion of a work machine which incorporates the features of the present invention therein; FIG. 2 is a view similar to FIG. 1, but showing a bucket attached to the portion of the work machine shown in FIG. 1; and FIG. 3 is a view similar to FIG. 2, but showing a rear view of the bucket.
Best Mode for Carrying Out the Invention
While the invention is susceptible to various modifications and alternative forms, a specific embodiment thereof has been shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that there is no intent to limit the invention to the particular form disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Referring now to FIGS. 1, 2, and 3, there is shown a portion of a work machine 10 which incorporates the features of the present invention therein. Work machine 10 includes a stick assembly 12, a coupler 28, and an implement assembly 36. Stick assembly 12 includes (i) a stick 14, (ii) a left guide member 20 and a right guide member 22, and (iii) a link 26.
Stick 14 has rear aperture 16 defined therein as shown in FIG. 1. As shown in FIGS. 1 and 2, stick 14 also has a sleeve recess 68 defined in a unitary end thereof. A stick sleeve 66 is positioned within sleeve recess 68 so as to define a forward aperture 18 in stick 14 (see FIG. 1).
Left guide member 20 has left guide apertures 58 and 59 defined therein. Right guide member 22 has right guide apertures 60 and 61 defined therein (see FIG. 3). Left guide member 20 and right guide member 22 are spaced apart from each other so as to define a rear stick space 24 therebetween. Stick 14 is positioned within rear stick space 24 such that rear aperture 16 is aligned with left guide aperture 58 and right guide aperture 60 as shown in FIGS. 1 and 3.
once aligned in the above described manner, a rear pin 56 is positioned within left guide aperture 58, right guide aperture 60, and rear aperture 16 so as to pivotally mount left guide member 20 and right guide member 22 to stick 14.
Link 26 is positioned relative to left guide member 20 and right guide member 22 such that link 26 is located within rear stick space 24. Link 26 is further positioned relative to left guide member 20 and right guide member 22 such that a passageway (not shown) defined in an end of link 26 is aligned with left guide aperture 59 (see FIG. 2) and right guide aperture 61 (see FIG. 3). Once aligned in the above described manner, a pin (not shown) is positioned within the passageway defined in the end of link 26, left guide aperture 59, and right guide aperture 61 so as to pivotally couple link 26 to left guide member 20 and right guide member 22.
As shown in FIG. 1, coupler 28 includes a left lateral support 30 and a right lateral support 32 m which are spaced apart from each other to define a forward stick space 34 therebetween. Left lateral support 30 has a left mounting notch 50, a left coupler aperture 62, and a left coupler aperture 63 defined therein. Right lateral support 32 has a right mounting notch 52, a right coupler aperture 64, and a right coupler aperture 65 (see FIG. 3) defined therein.
Coupler 28 is positioned relative to stick 14 such that stick 14 is located within forward stick space 34. Coupler 28 is further positioned relative to stick 14 such that (i) left coupler aperture 62, right coupler aperture 64, and forward aperture 18 are aligned and (ii) stick sleeve 66 extends through left coupler aperture 62 and right coupler aperture 64. Having stick sleeve 66 extending through left coupler aperture 62 and right coupler aperture 64 in the above described manner allows coupler 28 to pivot relative to stick 14.
Link 26 is positioned relative to coupler 28 such that an end of link 26 is located within forward stick space 34. Link 26 is further positioned relative to coupler 28 such that a passageway (not shown) defined in the end of link 26 is aligned with left coupler aperture 63 and right coupler aperture 65 (see FIG. 3). Once aligned in the above described manner, pin (not shown) is positioned within the passageway defined in the end of link 26, left coupler aperture 63, and right coupler aperture 65 so as to pivotally couple link 26 to coupler 28.
Referring now to FIGS. 2 and 3, implement v 36 includes a bucket 72.
assembl Implement assembly 36 also includes a left bracket 38 and a right bracket 40 connected to and extending from bucket 72. Left bracket 38 and right bracket 40 are spaced apart from 35 each other so as to define a bracket space 42 n therebetween. Left bracket 38 has a left mounting aperture 46 (see FIG. 3) and a left mounting aperture 47 (see FIG. 2) defined therein. Right bracket 40 (see FIG. 3) has a right mounting aperture 48 and a right mounting aperture 49 defined therein.
As shown in FIG. 3, implement assembly 36 is positioned relative to stick assembly 12 and coupler 28 such that right lateral support 32, left lateral support 30, and stick 14 are each positioned within lo bracket space 42. Implement assembly 36 is further positioned relative to coupler 28 such that left mounting aperture 46, left mounting notch 50, right mounting aperture 48, and right mounting notch 52 are aligned with each other. Once implement assembly 36 is positioned in the above described manner, an implement pin 44 is positioned within left mounting aperture 46, left mounting notch 50, right mounting aperture 48, and right mounting notch 52 so as to secure implement assembly 36 to coupler 28.
In addition, implement assembly 36 is positioned relative to stick 14 such that left mounting aperture 47 (see FIG. 2), right mounting aperture 49 (see FIG. 3), and forward aperture 18 (see FIG. 1) are aligned with each other. A forward pin 54 is then positioned within left mounting aperture 47, right mounting aperture 49, and forward aperture 18 as shown in FIG. 3 so as to pivotally link implement assembly 36 to stick 14.
Industrial Applicability
In order to secure implement assembly 36 to stick assembly 12 during use of work machine"10, bucket 72 is placed on the ground with implement pin 44 already inserted into left mounting aperture 46 and -35 right mounting aperture 48 (see FIG. 3). Stick 14 is then manipulated by an operator (not shown) of work machine 10 such that (i) coupler 28 and unitary end 70 of stick 14 are positioned within bracket space 42 and (ii) implement pin 44 is located within left mounting 5 notch 50 and right mounting notch 52 as shown in FIG. 3. The operator then moves stick 14 such that bucket 72 is slightly lifted off of the ground. Moving stick 14 in the above described manner causes bucket 72 to rotate relative to stick 14 such that left mounting aperture 47 (see FIG. 2) and right mounting aperture 49 (see FIG. 3) align with forward aperture 18 as shown in FIG. 2. Forward pin 54 is then inserted through left mounting aperture 47, right mounting aperture 49, and forward aperture 18 to secure implement assembly 36 to stick assembly 12.
However, it should be understood that an advantage of the design of stick assembly 12 and coupler 28 is that it allows coupler 28 to be removed from stick assembly 12 so that implement assembly 36 can be dire-ctly attached to stick assembly 12 without the use of any additional mechanical parts. Specifically, once coupler 28 is removed, stick assembly 12 is positioned relative to implement assembly 36 such that (i) the passageway defined in the end of link 26 is aligned with left mounting aperture 46 and right mounting aperture 48 and (ii) forward aperture 18 of stick 14 is aligned with left mounting aperture 47 and right mounting aperture 49. once aligned in the above described manner, implement pin 44 is inserted through left mounting aperture 46, the passageway defined in the end of link 26, and right mounting aperture 48, and forward pin 54 is inserted through left mounting aperture 47, forward aperture 18, and right mounting aperture 49. The above described arrangement attaches implement assembly 36 directly to stick assembly 12 so that work functions can be performed.
The ability to attach implement assembly 36 directly to stick assembly 12 without the use of additional mechanical parts is due, in part, to the structural strength of stick 14. Specifically, unitary end 70 possesses greater structural strength as compared to a stick having a bifurcated end. Therefore, unitary end 70 enhances the ability of stick assembly 12 to accommodate the mechanical loads transmitted thereto during a work function when implement assembly 36 is attached directly to stick 14.
An additional advantage of the present invention is that when coupler 28 is removed from stick assembly 12, implement assembly 36 can still be coupled to stick 14 by aligning left mounting aperture 47, right mounting aperture 49, and forward aperture 18, and then inserting forward pin 54 through the aforementioned apertures. In other words, forward aperture 18 is utilized to pivotally couple or pin implement assembly 36 to stick 14 regardless of whether coupler 28 is used. This is in contrast to other coupler and stick assembly designs which require the implement assembly to be pinned to the stick at a first location when no coupler is utilized, and pinned to the stick at a second location when a coupler it utilized.
The necessity of having two separate pining locations on the stick is undesirable since it increases the mechanical complexity of the stick.
It should be understood that the spatial relationship between implement assembly 36 and stick assembly 12 determines the performance characteristics of implement assembly 36 (e.g. the degree of rotation of bucket 72 relative to stick 14). It should also be understood that the present invention, as compared to other coupler and stick assembly designs (e.g. those which require the implement assembly to be pinned to the stick at a first location when no coupler is utilized, and pinned to the stick at a second location a coupler is utilized), maintains the spatial relationship between implement assembly 36 and stick assembly 12 whether or not coupler 28 is utilized. Specifically, as discussed above, forward aperture 18 of stick 14 is used to pin implement assembly 36 to stick 14 regardless of whether coupler 28 is used. Using forward pin aperture 18 in both circumstances helps reduce any change in the spatial relationship between implement assembly 36 and stick assdmbly 12 when switching between using, and not using, coupler 28 to attach implement assembly 36 to stick assembly 12. Therefore, the performance characteristics of implement assembly 36 remain relatively constant regardless of whether coupler 28 is used. Having the performance characteristics of implement assembly 36 remain relatively constant is desirable since it allows an operator of work machine 10 to predict with greater certainty how implement assembly 36 will perform during various work functions with and without coupler 28.
While the invention has been illustrated and described in detail in the drawings and foregoing description, such illustration and description is to be considered as exemplary and not restrictive'in character, it being understood that only the preferred embodiment has been shown and described and that all changes and modifications that come within the spirit of the invention are desired to be protected.
Claims (13)
1. A work machine, comprising: a stick assembly which includes (i) a stick having a rear aperture and a forward aperture (ii) a left guide member and a right guide member which are spaced apart from each other so as to define a rear stick space therebetween, said stick being positioned within said rear stick space, and (iii) a link which is pivotally coupled to each of said left guide member and said right guide member; and a coupler which is pivotally coupled to said link, wherein (i) said coupler has a left lateral support and a right lateral support which are spaced apart from each other to define a forward stick space therebetween, (ii) said stick is also positioned in said forward stick space, and (iii) said coupler is pivotally coupled to said stick.
2. The work machine of claim 1, further comprising an implement assembly, wherein: said implement assembly includes a left bracket and a right bracket which are spaced apart from each other so as to define a bracket space therebetween, and each of said left bracket and said right bracket is pivotally coupled to said stick.
3. The work machine of claim 2, wherein:
said right lateral support of said coupler, said left lateral support of said coupler, and said stick are each positioned within said bracket space.
4. The work machine of claims 2, further comprising an implement pin, wherein:
said left bracket includes a left mounting aperture defined therein, said right bracket includes a right mounting aperture defined therein, said left lateral support includes a left mounting notch defined therein, said right lateral support includes a right mounting notch defined therein, said left mounting aperture, said left lo mounting notch, said right mounting aperture, and said right mounting notch are aligned with each other, and said implement pin is positioned within said left mounting aperture, said left mounting notch, said right mounting aperture, and said right mounting notch.
is
5. The work machine of claim 1, further comprising a forward pin and a rear pin, wherein:
said left guide member has a left guide aperture defined therein, said right guide member has a right guide aperture defined therein, said left lateral support has a left coupler aperture defined therein, said right lateral support has a right coupler aperture defined therein, said left guide aperture, said right guide aperture, and said rear aperture are aligned with each other, said left coupler aperture, said right coupler aperture, and said forward aperture are aligned with each other, said rear pin is positioned within said left guide aperture, said right guide aperture, and said rear aperture, and said forward pin is positioned within said left coupler aperture, said right coupler aperture, and said forward aperture.
6. The work machine of claim 1, further comprising a stick sleeve, wherein:
said stick includes a sleeve recess defined in an end thereof, and said stick sleeve is positioned within said lo sleeve recess.
7. The work machine of claim 6, wherein: said left lateral support has a left coupler aperture defined therein, said right lateral support has a right coupler aperture defined therein, and said stick sleeve is positioned within said left coupler aperture and said right coupler aperture.
8. A work machine, comprising: a stick assembly which includes (i) a stick having a rear aperture and a forward aperture (ii) a left guide member and a right guide member which are spaced apart from each other so as to define a rear stick space therebetween, said stick being positioned within said rear stick space, and (iii) a link which is pivotally coupled to each of said left guide member and said right guide member; a coupler which is pivotally coupled to said link, wherein (i) said coupler has a left lateral support and a right lateral support which are spaced apart from each other to define a forward stick space therebetween, (ii) said stick is also positioned in said forward stick space, and (iii) said coupler is pivotally coupled to said stick; a bucket having a left bracket and a right bracket extending therefrom, wherein (i) said left bracket and said right bracket are spaced apart from each other so as to define a bracket space therebetween, and (ii) each of said left bracket and said right bracket is pivotally coupled to said stick.
9. The work machine of claim 8, wherein: said right lateral support of said coupler, said left lateral support of said coupler, and said stick are each positioned within said bracket space.
is
10. The work machine of claims 8, further comprising an implement pin, wherein: said left bracket includes a left mounting aperture defined therein, said right bracket includes a right mounting aperture defined therein, said left lateral support includes a left notch defined therein, said mounting notch mounting right lateral support includes a right defined therein, said left mounting aperture, said left mounting notch, said right mounting aperture, and said right mounting notch are aligned with each other, and said implement pin is positioned within said left mounting aperture, said left mounting notch, said right mounting aperture, and said right mounting notch.
1
11. The work machine of claim 8, further comprising a forward pin and a rear pin, wherein:
said left guide member has a left guide aperture defined therein, said right guide member has a right guide aperture defined therein, said left lateral support has a left coupler aperture defined therein, said right lateral support has a right coupler aperture defined therein, said left guide aperture, said right guide aperture, and said rear aperture are aligned with each other, said left coupler aperture, said right coupler aperture, and said forward aperture are aligned with each other, said rear pin is positioned within said left guide aperture, said right guide aperture, and said rear aperture, and 20 said forward pin is positioned within said left coupler aperture, said right coupler aperture, and said forward aperture.
12. The work machine of claim 8, further comprising a stick sleeve, wherein: said stick includes a sleeve recess defined in an end thereof, and said stick sleeve is positioned within said sleeve recess
13. The work machine of claim 12, wherein: said left lateral support has a left coupler aperture defined therein, said right lateral support has a right coupler aperture defined therein, and said sleeve is positioned within said left coupler aperture and said right coupler aperture.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US8309998A | 1998-05-21 | 1998-05-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9908319D0 GB9908319D0 (en) | 1999-06-02 |
| GB2337505A true GB2337505A (en) | 1999-11-24 |
Family
ID=22176169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9908319A Withdrawn GB2337505A (en) | 1998-05-21 | 1999-04-12 | Apparatus for attaching an implement assembly to a stick of a work machine |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2337505A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2040262A (en) * | 1979-01-18 | 1980-08-28 | Beales Steel Prod | Coupler for mounting implement on actuator arm |
| GB2169582A (en) * | 1985-01-15 | 1986-07-16 | Samuel Trevor Mason | Quick-change fitting for load shifting implement |
| US5145313A (en) * | 1991-06-28 | 1992-09-08 | Weyer Paul P | Quick disconnect bucket actuator |
| EP0508692A1 (en) * | 1991-04-09 | 1992-10-14 | Japanic Corporation | Accessory detachable mechanism of construction machine |
-
1999
- 1999-04-12 GB GB9908319A patent/GB2337505A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2040262A (en) * | 1979-01-18 | 1980-08-28 | Beales Steel Prod | Coupler for mounting implement on actuator arm |
| GB2169582A (en) * | 1985-01-15 | 1986-07-16 | Samuel Trevor Mason | Quick-change fitting for load shifting implement |
| EP0508692A1 (en) * | 1991-04-09 | 1992-10-14 | Japanic Corporation | Accessory detachable mechanism of construction machine |
| US5145313A (en) * | 1991-06-28 | 1992-09-08 | Weyer Paul P | Quick disconnect bucket actuator |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9908319D0 (en) | 1999-06-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |