WO2023020816A1 - Protective element for a wear element of earthmoving machines - Google Patents
Protective element for a wear element of earthmoving machines Download PDFInfo
- Publication number
- WO2023020816A1 WO2023020816A1 PCT/EP2022/071502 EP2022071502W WO2023020816A1 WO 2023020816 A1 WO2023020816 A1 WO 2023020816A1 EP 2022071502 W EP2022071502 W EP 2022071502W WO 2023020816 A1 WO2023020816 A1 WO 2023020816A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- protective
- wear
- earthmoving machines
- protective element
- portions
- Prior art date
Links
- 230000001681 protective effect Effects 0.000 title claims abstract description 107
- 239000000463 material Substances 0.000 description 4
- 230000035515 penetration Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- E02F9/2858—Teeth characterised by shape
-
- 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
- E02F9/2883—Wear elements for buckets or implements in general
Definitions
- the present invention refers to a protective element for a wear element of earthmoving machines, in particular, for protecting the front part of adapters of earthmoving machines.
- the components of earthmoving machines are subject to wear, and they need protective elements to prevent or delay this wear.
- the adapter has a rear part suitable for being fixed to the shovel, and a front part suitable for being housed inside a cavity of the wear element or tooth.
- the rear part has an attaching part, e.g., like two legs, an upper leg, and a bottom leg, the rear part also has a connection part which connect the attaching part with de front part of the adapter.
- the front end of the adapters is inside the cavity of the tooth when the tooth and the adapter are attached, but the connection part are exposed to the ground and to the excavated material, and that contact of the connection part of the adapters with the excavated material makes that area of the adapter be subjected to a high level of wear.
- Adapters wear out especially in the upper part and in the lower part, the wear on the sides is reduced, because the greatest quantity of the material cross for over and bottom part of the adapters, the laterals have some protection by other adapters and shrouds.
- wear caps are used, which protect only the upper part of the adapter.
- Two wear caps can also be used, one on the top and one on the bottom, but in this case the sides are unprotected.
- the protective elements may weigh more than 20 kg. in these cases, the pieces are obliged, for safety, to carry a lifting eye, which allows them to be manipulated with a crane or hoist. In these cases, the lower wear caps are very difficult to place, due to two factors:
- one purpose of the present invention is to provide a protective element that protects the entire front perimeter of a wear element of earthmoving machines, in particular, for protecting the connection part of adapters of earthmoving machines.
- the protective element for a wear element of earthmoving machines according to the present invention is made from one piece, comprising:
- At least one of the side protective portions comprise an internal protrusion, and preferably both protective portions comprise an internal protrusion. That protrusion is used to guide the protective element over the adapter which have a groove to receive the protrusion, for positioning and maintaining in position the protective element.
- the, or each, internal protrusion has a substantially parallelepiped shape defining a plurality of stop flat surfaces.
- the backwards movement of the protective element is stopped by the back stop surfaces of the internal protrusions.
- the upwards and downwards movements are stopped by the upper, frontal, and lower surfaces of the internals protrusions.
- the side protective portions are preferably U-shaped, defining a central part and two lateral parts, and the, or each protrusion, is placed in the internal central part of the side protective portions, Positioning the protrusions in internal central part of the side protective portions, make the protrusions of the protective element and the groove in the adapter be less exposed to the wear, this optimized the designs of the protective elements and make them more efficiently and resistant.
- the side protective portions are flat, the first protective portion is curved, and the second protective portion is also curved. Following the shape of the connection part of the adapter with an extra thickness for protection.
- the protective element comprises a lifting eye, which is placed in the first protective portion.
- the protective element according to the present invention has a collar shape.
- the protective element does not need a pin to be fixed in position, it is self-holding between the adapter and the tooth, so as a back surface of the tooth contacts with a front surface of the protective element, maintaining the protective element in position.
- the contact of the back surface of the tooth and the front surface of the protective element avoids the forward movement of the protective element. That is to say, the collar shape of the protective element of the present invention allows having a big frontal contact surface with the tooth, that firmly stops the forward movement of the protective element.
- the wear element is less exposed to wear, because by providing the protrusion(s) on the side portion(s), it permits to make more integrated designs;
- the wearcaps are less exposed to wear, because by making the guide on the side it allows to make designs more integrated to the tooth-holder set. Also with lower designs, these improve penetration into the ground, (more penetration of the system) and with more wear material before being punctured (more duration).
- the frontal contact surface also increases the contact zone with the tooth on the whole perimeter of the collar.
- Figure 1 is a frontal perspective view of the protective element according to the present invention.
- Figure 2 is a rear perspective view of the protective element according to the present invention.
- Figure 3 is a side view of the protective element according to the present invention mounted in its use position around a wear element
- Figure 4 is an exploded perspective view of a tooth provided with a wear element and the protective element according to the present invention. Description of a preferred embodiment
- the protective element identified generally by numeral reference 1 , is used for protecting wear elements of earthmoving machines, in particular, for protecting the connection part 10 of adapters 7 of earthmoving machines, as shown in Figures 3 and 4.
- the wear element or adapter has a front part 8 a rear part 7, that rear part comprises an attaching part 11 and a connection part 10.
- the protective element 1 according to the present invention is made from a single piece, and according to the shown embodiment, has a collar shape.
- the protective element 1 comprises a first protective portion 2, which is the upper protective portion in the use position, a second protective portion 3 opposite to the first protective portion 2, which is the lower protective portion in the use position, and two side protective portions 4.
- the wear element or adapter is protected on their upper, lower and side parts by the protective element 1.
- the first and second protective portions 2, 3 are curved, and the side protective portions 4 are flat.
- the first and second protective portions 2, 3 are curved because they are apart from the shape of the adapter, these portions are significant parallel from the adapter and the tooth.
- the side protective portions 4 are U-shaped, defining a central part and two lateral parts.
- One or both side protective portions 4 comprise an internal protrusion 5, that is used as a contact or abutment portion with the wear elements tooth 9 and adapter 7.
- the internal protrusion 5 is placed in both side protective portions 4.
- The, or each, internal protrusion 5 has a substantially parallelepiped shape, defining a plurality of flat surfaces, in particular, a frontal flat surface 51 , a rear flat surface 52, an upper flat surface 53, and a lower flat surface 54, as shown in Figures 1 and 2.
- the protective element 1 according to the present invention comprises a lifting eye 6, in particular, placed in the external part of the first protective portion 2.
- This lifting eye 6 permits the placement and removal of the protective element 1 when the protective element 1 is heavy and it cannot be moved by hand.
- the placement and removal of the protective element 1 according to the present invention can be done from its upper part, not been necessary to access to its lower part.
- the protective element 1 defines frontal and rear openings, thanks to its collar shape.
- the protective element 1 is mounted on an adapter 7 to be fixed or stopped with the wear element 7, mounted on the front part of the adapter.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA3229015A CA3229015A1 (en) | 2021-08-18 | 2022-08-01 | Protective element for a wear element of earthmoving machines |
AU2022330577A AU2022330577A1 (en) | 2021-08-18 | 2022-08-01 | Protective element for a wear element of earthmoving machines |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP21382766.0 | 2021-08-18 | ||
EP21382766.0A EP4137644A1 (en) | 2021-08-18 | 2021-08-18 | Protective element for a wear element of earthmoving machines |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023020816A1 true WO2023020816A1 (en) | 2023-02-23 |
Family
ID=77520665
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/071502 WO2023020816A1 (en) | 2021-08-18 | 2022-08-01 | Protective element for a wear element of earthmoving machines |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP4137644A1 (en) |
AU (1) | AU2022330577A1 (en) |
CA (1) | CA3229015A1 (en) |
WO (1) | WO2023020816A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030005606A1 (en) * | 2001-07-06 | 2003-01-09 | Carpenter Christopher M. | Wear assembly |
US20160002893A1 (en) * | 2013-01-25 | 2016-01-07 | Cqms Pty Ltd | An excavator wear assembly |
EP3137690A1 (en) * | 2014-04-28 | 2017-03-08 | Metalogenia Research & Technologies S.L. | Tooth and adaptor for attachment of the tooth to a working machine |
US20170328034A1 (en) * | 2016-05-13 | 2017-11-16 | Caterpillar Inc. | Tool Adapter and Shroud Protector for a Support Assembly for Ground Engaging Tools |
US20200340216A1 (en) * | 2019-04-24 | 2020-10-29 | Caterpillar Inc. | Ground Engaging Tool Assembly with Adapter for Attaching Tip to Machine Implement |
-
2021
- 2021-08-18 EP EP21382766.0A patent/EP4137644A1/en not_active Withdrawn
-
2022
- 2022-08-01 AU AU2022330577A patent/AU2022330577A1/en active Pending
- 2022-08-01 WO PCT/EP2022/071502 patent/WO2023020816A1/en active Application Filing
- 2022-08-01 CA CA3229015A patent/CA3229015A1/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030005606A1 (en) * | 2001-07-06 | 2003-01-09 | Carpenter Christopher M. | Wear assembly |
US20160002893A1 (en) * | 2013-01-25 | 2016-01-07 | Cqms Pty Ltd | An excavator wear assembly |
EP3137690A1 (en) * | 2014-04-28 | 2017-03-08 | Metalogenia Research & Technologies S.L. | Tooth and adaptor for attachment of the tooth to a working machine |
US20170328034A1 (en) * | 2016-05-13 | 2017-11-16 | Caterpillar Inc. | Tool Adapter and Shroud Protector for a Support Assembly for Ground Engaging Tools |
US20200340216A1 (en) * | 2019-04-24 | 2020-10-29 | Caterpillar Inc. | Ground Engaging Tool Assembly with Adapter for Attaching Tip to Machine Implement |
Also Published As
Publication number | Publication date |
---|---|
EP4137644A1 (en) | 2023-02-22 |
CA3229015A1 (en) | 2023-02-23 |
AU2022330577A1 (en) | 2024-03-07 |
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