GB2544789A - A worktool conversion bracket - Google Patents

A worktool conversion bracket Download PDF

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Publication number
GB2544789A
GB2544789A GB1520962.0A GB201520962A GB2544789A GB 2544789 A GB2544789 A GB 2544789A GB 201520962 A GB201520962 A GB 201520962A GB 2544789 A GB2544789 A GB 2544789A
Authority
GB
United Kingdom
Prior art keywords
worktool
bracket
conversion bracket
conversion
machine
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.)
Granted
Application number
GB1520962.0A
Other versions
GB2544789B (en
GB201520962D0 (en
Inventor
Abi-Karam Elias
Sweeting Ian
Hendriks Jurgen
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.)
Caterpillar Inc
Original Assignee
Caterpillar 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 Caterpillar Inc filed Critical Caterpillar Inc
Priority to GB1520962.0A priority Critical patent/GB2544789B/en
Publication of GB201520962D0 publication Critical patent/GB201520962D0/en
Publication of GB2544789A publication Critical patent/GB2544789A/en
Application granted granted Critical
Publication of GB2544789B publication Critical patent/GB2544789B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28Dredgers; 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
    • E02F3/36Component parts
    • E02F3/3604Devices to connect tools to arms, booms or the like
    • E02F3/3609Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3631Devices 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
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28Dredgers; 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
    • E02F3/36Component parts
    • E02F3/3604Devices to connect tools to arms, booms or the like
    • E02F3/3609Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3627Devices 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 longitudinal locking element
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28Dredgers; 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
    • E02F3/36Component parts
    • E02F3/3604Devices to connect tools to arms, booms or the like
    • E02F3/3609Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/364Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat using wedges
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28Dredgers; 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
    • E02F3/36Component parts
    • E02F3/3604Devices to connect tools to arms, booms or the like
    • E02F3/3609Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3668Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat where engagement is effected by a mechanical lever or handle
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28Dredgers; 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
    • E02F3/36Component parts
    • E02F3/3604Devices to connect tools to arms, booms or the like
    • E02F3/3609Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3672Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat where disengagement is effected by a mechanical lever or handle
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28Dredgers; 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
    • E02F3/36Component parts
    • E02F3/3604Devices to connect tools to arms, booms or the like
    • E02F3/3686Devices to connect tools to arms, booms or the like using adapters, i.e. additional element to mount between the coupler and the tool
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F9/00Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20Drives; Control devices
    • E02F9/22Hydraulic or pneumatic drives
    • E02F9/2264Arrangements or adaptations of elements for hydraulic drives
    • E02F9/2275Hoses and supports therefor and protection therefor

Abstract

A worktool conversion bracket 1 is provided presenting a machine coupling interface 30 on a first side and a worktool attachment interface 40 on a second side that would otherwise be incompatible with the quick coupler (101). The machine coupling interface 30 is configured for quick coupling to a machine quick coupler (101) of the type comprising horizontal locking pins (103) while the worktool attachment interface 40 comprises an upper wedge member 45 and one or more vertically movable locking pins 47 configured for attachment to a worktool (200). Additionally with two support arms 3 comprising hooks 32 and apertures 33 on the machine coupling side to secure to the machine with pins and locking pins 47 for securing the work tool attachment.

Description

A Worktool Conversion Bracket
Technical Field
The disclosure relates to a worktool conversion bracket for coupling a worktool to a machine. In particular, a worktool conversion bracket is disclosed which facilitates coupling of a worktool having an attachment mechanism compatible with a first type of machine coupler to a machine provided with a second type of machine coupler.
Background
It is known to provide a machine coupler to selectively allow connection of a variety of worktools to a machine. The machine couplers may be of a type known as quick couplers where they allow coupling and de-coupling of the worktool from the machine in an efficient and speedy manner.
Many types of machines may be provided with a quick coupler. Examples include skid steer loaders, compact wheel loaders, multi terrain loaders, compact track loaders, as well as others. A number of designs of quick coupler have been developed. Figure 1 shows a first type of known quick coupler 101 attached to a linkage 104 of a machine 100. The quick coupler 101 is of the type comprising a pair of upper support pins 102 positioned towards a top of the quick coupler 101 and a pair of horizontal locking pins 103 positioned towards a bottom of the quick coupler 101. The horizontal locking pins 103 are moveable between a retracted and extended position. The horizontal locking pins 103 may be moved from retracted to extended positions manually but may preferably be driven by hydraulic means provided by the machine 100. The first type of quick coupler 101 may be used on a machine such as a compact wheel loader, small wheel loader or back hoe loader.
Figure 2 illustrates a second type of known quick coupler 110 attached to the linkage 114 of a second machine 120. This quick coupler 110 is of the type comprising a wedge member 111 at an upper edge of the quick coupler 110 and a pair of vertical locking pins 112 which can be moved between retracted and extended positions. The second type of quick coupler 110 may be used on a machine such as a skid steer loader.
Worktools designed for use with one type of quick coupler will not be compatible for use with another type of quick coupler, in particular due to the different geometries and kinematics of the locking arrangements of the quick couplers. US 5,098,252 describes an adaptor mechanism for use with a skid steer loader. The adaptor mechanism allows an implement mounting apparatus of a machine designed for engagement with a worktool having a first shape of angled support member to be coupled to a worktool having a different angled support member. The adaptor mechanism requires a relatively complicated over-centre linkage to permit engagement and disengagement of the adaptor mechanism with the machine.
Against this background there is provided a worktool conversion bracket which may find particular application in facilitating simple and secure coupling of a worktool having an attachment mechanism compatible with a first type of machine coupler to a machine provided with a second type of machine coupler.
Summary of the disclosure
The present disclosure provides a worktool conversion bracket comprising a bracket body, a machine coupling interface on a first side of the worktool conversion bracket and a worktool attachment interface on a second side of the worktool conversion bracket; the machine coupling interface configured for quick coupling to a machine quick coupler of the type comprising horizontal locking pins; the worktool attachment interface configured for attachment to a worktool and comprising an upper wedge member and one or more vertically-movable locking pins.
Brief description of the drawings
The present disclosure will now be described, by way of example only, with reference to the accompanying drawings in which:
Figure 1 shows a first type of prior art quick coupler comprising horizontal locking pins, attached to a first machine;
Figure 2 shows a second type of prior art quick coupler comprising vertical locking pins, attached to a second machine;
Figure 3 shows a perspective view of a worktool conversion bracket according to the present disclosure;
Figure 4 shows another perspective view of the worktool conversion bracket of Figure 3;
Figure 5 shows a side view of the worktool conversion bracket of Figure 3 coupled to a quick coupler comprising horizontal locking pins;
Figure 6 shows a perspective view of the worktool conversion bracket of Figure 3 coupled to a machine and a first example of worktool;
Figure 7 shows a perspective view of the worktool conversion bracket of Figure 3 attached to the first example of worktool;
Figure 8 shows a perspective view of a portion of the worktool conversion bracket of Figure 3 in a first configuration;
Figure 9 shows a portion of the worktool conversion bracket of Figure 3 in a second configuration, and
Figure 10 shows a view of the worktool conversion bracket of Figure 3 coupled to a quick coupler comprising horizontal locking pins and with an optional rack backstop fitted.
Detailed description
Figures 3 and 4 show a worktool conversion bracket 1 according to the present disclosure. The worktool conversion bracket 1 comprises a bracket body 2, a machine coupling interface 30 on a first side and a worktool attachment interface 40 on a second side.
The bracket body 2 may comprise a frame 21 which may be formed with an upper bar 22 and a lower bar 23 which may span the width of the bracket body 2 and which may be joined by two side bars 24 to form an open frame which may have a central opening 25 in the middle thereof. The upper bar 22 may be shaped to form a part of the worktool attachment interface 40. In particular, the upper bar 22 may have an upper edge 41 and an L-shaped member 46 which together define an upper wedge member 45 seen most clearly in Figure 4. The lower bar 23 may be provided with a pair of apertures 44 as seen most clearly in Figure 4 which may form another portion of the worktool attachment interface 40. The apertures 44 may be formed in rear facing flange 42 defined by a portion of the lower bar 23. As can be seen in Figures 4 and 5, the worktool attachment interface 40 may present a substantially flat face towards a worktool 200 in use. In particular, the profile, dimensions and positioning of the substantially flat face of the worktool conversion bracket 1 may very closely match the profile, dimensions and positioning of the second type of known quick coupler 110 shown in Figure 2 when attached to the machine 120. A pair of support arms 3 may be provided as part of the worktool conversion bracket 1 which may extend perpendicularly from the bracket body 2. One support arm 3 may be provided on each side of the bracket body 2 as shown in Figure 3. The support arms 3 may be formed integrally with the bracket body 2 or may be attached by suitable means, for example welding. Each support arm 3 may form a part of the machine coupling interface 30 and may be provided with a hook member 32 which may be towards an upper part of the support arm 3 and a locking aperture 33 which may be provided towards a bottom part of the support arm 3. The pair of support arms 3 may be positioned parallel to one another such that an interior face 34 of each support arm 3 faces each other and an exterior face 35 of each support arm 3 faces away from each other.
One or both support arms 3 may be provided with rack back stop mounting holes 36, the use of which will be described further below.
Each support arm 3 may be provided with a track member 39 which may be located on the interior face 34 towards an interior corner 53 of the worktool conversion bracket 1 formed at the junction between the support arm 3 and the bracket body 2. The track member 39 may comprise an elongate bar or similar structure which may be spaced from a face of the bracket body 2 to thereby define a guide slot 54, the use of which will be described below. The track member 39 may be formed integrally with the support arm 3 or may be attached thereto by suitable means, for example welding. A further portion of the worktool attachment interface 40 may comprise one or a pair of vertically movable locking pins 47 as shown in Figure 3 and more clearly shown in Figures 8 and 9. Each vertically movable locking pin 47 may comprise a locking bolt 50 which may be manually moved and then fixed in an unlocked position as shown in Figure 8 and a locked position shown in Figure 9. The locking bolt 50 may be tapered, for example in the form of a tapered block and may be provided with through holes through which a first type of manually-operable fixing passes. The first type of manually-operable fixing may be fixing bolts 51 , optionally threaded fixing bolts. The threaded fixing bolts 51 may be oriented horizontally. The width of the locking bolt 50 may be such that the locking bolt 50 is guided in its movement between the unlocked position and the locked position by sliding contact with a face of the track member 39 as shown in Figure 8. Thus, the locking bolt 50 may be guided in sliding movement up and down the guide slot 54. As seen most clearly in Figures 3 and 4, the support arm 3 may be provided with one or two elongate slots 37 through which the threaded fixing bolts 51 may pass. Nuts associated with the threaded fixing bolts 51 may be attached and secured to the threaded fixing bolts 51 from the exterior face 35 allowing the locking bolt 50 to be secured in the locked position and unlocked position and moved there between without becoming fully detached from the support arms 3. A second type of manually-operable fixing may also be present, which may be in the form of a jacking bolt 48 mounted rotationally within a jacking support 49 may be provided above the guide slot 54 of each vertically movable locking pin 47, the use of which will be described below. The jacking bolt 48 of each vertically movable locking pin 47 may be orientated perpendicularly to the threaded fixing bolts 51 of said vertically movable locking pin 47. A cable tie 61 may be mounted to one or both support arms 3 as shown in Figure 8.
The machine coupling interface 30 of the worktool conversion bracket 1 is configured for quick coupling to a machine quick coupler of the type comprising horizontal locking pins 103. By contrast, the worktool attachment interface 40 is configured for attachment to a worktool 200 of the type having a rebate 202 for receiving an upper wedge member and one or more locking apertures 203 for receiving vertically-moveable locking pins.
Figures 5 to 7 show the worktool conversion bracket 1 in use. Figure 5 shows the worktool conversion bracket 1 coupled to a quick coupler 101 of a machine 100 of the type having upper support pins 102 and horizontal locking pins 103. As can be seen, the hook members 32 may be supported by the upper support pins 102 while the horizontal locking pins 103 of the quick coupler 101 may engage securely in the locking apertures 33 of the support arms 3. Once secured, the machine 100 is able to present the worktool attachment interface 40 to a worktool 200.
Figures 6 and 7 show the worktool 200 attached to the worktool attachment interface 40.
As can be seen, the attachment may involve the rebate 202 of the worktool 200 being engaged over the upper wedge member 45 of the worktool conversion bracket 1 and the locking bolts 50 of the worktool attachment interface 40 being extended into locking engagement through the locking apertures 203.
Installation of the worktool conversion bracket 1 on the worktool 200 may be achieved as follows. The worktool conversion bracket 1 may be located on the ground initially with the worktool attachment interface 40 side of the worktool conversion bracket 1 lowermost.
First, the threaded fixing bolts 51 may be loosened off by use of a suitable tool, such as a ring spanner, and the locking bolts 50 may be raised to the top of the guide slots 54 and the threaded fixing bolts 51 loosely retightened to hold the locking bolts 50 in the unlocked position. If not already raised, each jacking bolt 48 can also be retracted to permit movement of the locking bolt 50.
The machine 100 is then operated to engage the quick coupler 101 with the machine coupling interface 30 which may be achieved by first engaging the upper support pins 102 in the hook members 32 and racking the linkage 104 fully back and then engaging the horizontal locking pins 103 in the locking apertures 33 by operation of the hydraulic means. Next, the machine 100 may be operated to engage the upper wedge member 45 of the worktool conversion bracket 1 under the rebate 202 of the worktool 200. The linkage 104 is then racked back sufficiently to lift the worktool 200 just off the ground to ensure that the weight of the worktool 200 is fully borne by the engagement between the rebate 202 and the upper wedge member 45. Next, the locking bolts 50 are manually loosened off which may be by use of the ring spanner and the locking bolts 50 are allowed to fall down the guide slots 54 so that the locking bolts 50 extend through the apertures 44 in the rear facing flange 42 of the worktool conversion bracket 1 and into and engage in a locking manner with the locking apertures 203 of the worktool 200. As part of the attachment process the jacking bolts 48 may be rotated by use of a suitable tool such as a ring spanner to drive the locking bolts 50 down the guide slots 54 into the locked position. This may ensure tight fitment of the upper wedge member 45 into the rebate 202 of the worktool 200. If necessary, movement of the locking bolts 50 down the guide slots 54 may also be encouraged by tapping with a hammer or other tool.
Next, the machine 100 is operated to lower the worktool 200 and attached worktool conversion bracket 1 onto the ground and the quick coupler 101 is disengaged from the machine coupling interface 30. The machine 100 may then be withdrawn a short distance to allow better access to the machine coupling interface 30. Thereafter the jacking bolts 48 and the threaded fixing bolts 51 may be fully tightened by use a of a suitable tool such as the ring spanner. Thus, the locking bolts 50 may be manually fixable in the unlocked and/or locked position by use of manually-operated fixings, for example the threaded fixing bolts 51 and the jacking bolts 48.
With the worktool 200 physically secured to the worktool conversion bracket 1 hydraulic connections between the machine 100 and the worktool 200 may be hooked up. In most cases the original hydraulic hose connections between the machine 100 and the worktool 200 may be utilised. In some cases it may be necessary to convert the quick disconnects of the hydraulic hose connections and/or add additional jumper lines. If desired, the cable tie 61 may be used to restrain the hydraulic connections and keep them away from fouling the movement of the quick coupler.
At this point, the worktool 200 has been fully converted for use with a machine 100 having a quick coupler 101 of the horizontal locking pin type.
As shown in Figure 10, optionally the worktool conversion bracket 1 may be fitted with one or more rack back stops 60 which may be integrally formed therewith or attached thereto.
In the illustrated example the rack back stop 60 is mounted by bolts to the rack back stop mounting holes 36 of the support arms 3. In use, the rack back stops 60 may limit the degree of raking back of the quick coupler and worktool 200 that is possible due to engagement of the rack back stop 60 with bosses 160 provided on the linkage 104.
It is intended that the worktool conversion bracket 1 will remain attached to the worktool 200 on a semi-permanent basis to enable a single machine 100 having a quick coupler 101 of the horizontal locking pin type to be used with both worktools that are originally designed and configured to be mounted to a quick coupler 101 of the horizontal locking pin type and additional worktools 200 which have been converted to be suitable for attachment to a quick coupler 101 of the horizontal locking pin type by the worktool conversion bracket 1.
However, if detachment of the worktool conversion bracket 1 from the worktool 200 is desired, for example for maintenance or possible reattachment to another worktool 200, then detachment may be achieved by reversing the process described above and in particular by unlocking the locking bolts 50 of the worktool attachment interface 40 and moving the locking bolts 50 into the unlocked position to allow the worktool conversion bracket 1 to be detached from the locking apertures 203 and the rebate 202 of the worktool 200.
Industrial Application
The worktool conversion bracket 1 may find beneficial application in allowing worktools 200 designed for the quick coupler of a skid steer loader, multi terrain loader, compact track loader, or other machine to be used with the quick coupler of a compact wheel loader, small wheel loader or back hoe loader.
Example types of worktools 200 that can be converted by use of the present worktool conversion bracket 1 include, by way of example, brooms, augers, cold planers, snow blowers, snow ploughs, wheel saws, vibratory compactors, grapple tools, landscaping tools, etc.
The profile, dimensions and positioning of the substantially flat face of the worktool conversion bracket 1 when attached to a machine 100 may very closely match the profile, dimensions and positioning of the second type of known quick coupler 110 shown in Figure 2 when attached to the machine 120. Thus, the worktool conversion bracket 1 may be optimised in terms of its size and shape to ensure full compatibility and integration of the worktools 200 with the machine 100.
The present disclosure provides a worktool conversion bracket 1 which facilitates coupling of a worktool 200 having an attachment mechanism compatible with a first type of machine coupler to a machine provided with a second type of machine coupler. This may allow easier and more efficient management of mixed fleets of machines where, for example, compact wheel loaders and skid steer loaders can utilise the same set of worktools.
The worktool conversion bracket 1 may be particularly easy to install on a worktool 200. It may take no more than 10 minutes to convert the worktool 200 using the worktool conversion bracket 1. Advantageously there may be no need to weld or modify the existing worktools 200. Beneficially, the worktool conversion bracket 1 may provide a self-contained conversion solution that does not require any additional fixing means. In the case of the locking bolts 50, which may be integral, these may be securely retained with a remainder of the worktool conversion bracket 1 since it is not necessary in use to fully remove the threaded fixing bolts 51 but only loosen them off to allow movement of the locking bolts 50 in the guide slots 54.
The use of a first type of manually-operable fixings together with a second type of manually-operable fixings for securing the vertically movable locking pins 47 may beneficially provide a robust method of semi-permanently attaching the worktool conversion bracket 1 to the worktool 200.
Another benefit is that the original hydraulic hose connections between the machine 100 and the worktool 200 may be utilised in most cases without adaptation. In some cases it me be beneficial to convert the quick disconnects of the hydraulic hose connections.

Claims (19)

CLAIMS:
1. A worktool conversion bracket comprising a bracket body, a machine coupling interface on a first side of the worktool conversion bracket and a worktool attachment interface on a second side of the worktool conversion bracket; the machine coupling interface configured for quick coupling to a machine quick coupler of the type comprising horizontal locking pins; the worktool attachment interface configured for attachment to a worktool and comprising an upper wedge member and one or more vertically-movable locking pins.
2. The worktool conversion bracket of claim 1, wherein the machine coupling interface comprises a pair of hook members configured for hooking onto the machine quick coupler and a pair of locking apertures configured for receiving the horizontal locking pins of the machine quick coupler.
3. The worktool conversion bracket of claim 1 or claim 2, wherein the worktool conversion bracket comprises two support arms extending from the bracket body and each support arm comprises a hook member configured for hooking onto the machine quick coupler and a locking aperture configured for receiving a horizontal locking pin of the machine quick coupler.
4. The worktool conversion bracket of claim 3, wherein the bracket body comprises the upper wedge member at an upper edge thereof and a rear-facing flange at a lower edge thereof.
5. The worktool conversion bracket of claim 4, wherein the rear-facing flange comprises one or more apertures through which the one or more vertically-movable locking pins may be extended.
6. The worktool conversion bracket of claim 5, wherein the upper wedge member and/or the rear-facing flange extend across the full width of the worktool conversion bracket.
7. The worktool conversion bracket of any of claims 3 to 6, wherein one or both support arms comprise a rack back stop integrally formed therewith or attached thereto.
8. The worktool conversion bracket of any of claims 3 to 6, wherein the bracket body comprises a frame having an upper bar, a lower bar and two side bars each extending between the upper bar and the lower bar.
9. The worktool conversion bracket of any preceding claim, wherein each vertically-movable locking pin comprises a locking bolt which may be fixed in an unlocked position and/or a locked position, wherein fixing of the locking bolt in the locked position permits attachment of the worktool conversion bracket to a worktool.
10. The worktool conversion bracket of claim 9, further comprising manually-operated fixings, wherein each locking bolt is manually fixable in the locked position by use of the manually-operated fixings.
11. The worktool conversion bracket of claim 10, comprising a first type of manually-operated fixings and a second type of manually-operable fixings and each locking bolt is manually fixable in the locked position by use of the first type of manually-operated fixings and the second type of manually-operated fixings.
12. The worktool conversion bracket of claim 11, wherein the first type of manually-operated fixings comprise one or more bolts, optionally threaded bolts, which extend through one or more apertures in the locking bolt.
13. The worktool conversion bracket of claim 11 or claim 12, wherein the second type of manually-operated fixings comprises a jacking bolt for driving the locking bolt into engagement with the worktool.
14. The worktool conversion bracket of any of claims 12 to 13, wherein the one or more bolts of each locking bolt are orientated perpendicularly to the jacking bolt of said locking bolt.
15. The worktool conversion bracket of any of claims 9 to 14, further comprising one or more track members for guiding movement of each locking bolt between the locked position and the unlocked position.
16. The worktool conversion bracket of claim 15, further comprising a support arm extending from a bracket body, wherein the track member is provided on an interior face of the support arm and the locking bolt is positioned at or near an internal corner of the worktool conversion bracket which is formed between the bracket body and the support arm.
17. The worktool conversion bracket of any of claims 9 to 16, wherein the locking bolt is tapered.
18. The worktool conversion bracket of any preceding claim, further comprising one or more jacking bolts for driving each vertically-movable locking pin into engagement with the worktool and retaining engagement of each vertically-movable locking pin with the worktool.
19. A worktool conversion bracket substantially as hereinbefore described with reference to and as shown in the accompanying drawings.
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GB201520962D0 GB201520962D0 (en) 2016-01-13
GB2544789A true GB2544789A (en) 2017-05-31
GB2544789B GB2544789B (en) 2019-04-17

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EP2592042A1 (en) * 2011-11-11 2013-05-15 Vetter Umformtechnik GmbH Carrier device for load bearer and adapter for carrier device
CN203903920U (en) * 2014-05-08 2014-10-29 漳州重远船舶机械工业有限公司 Small and medium-sized loader fork arm carrier
DE202015000293U1 (en) * 2015-01-14 2015-04-07 Günter Schmihing Gmbh Adapter for quick-change frames on working machines
WO2015143673A1 (en) * 2014-03-27 2015-10-01 Volvo Construction Equipment Ab A coupler for a wheel loader

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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GB2544789B (en) 2019-04-17

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