EP3924558B1

EP3924558B1 - A jaw attachment having various functions

Info

Publication number: EP3924558B1
Application number: EP19915668.8A
Authority: EP
Inventors: Yusuf Ziya DEM R; Yusuf Usta; Ferhan FICICI; Fatma ÖZ; Mustafa Bozkurt
Original assignee: Hidromek Hidrolik Ve Mekanik Makina Imalat Sanayi Ve Ticaret AS
Current assignee: Hidromek Hidrolik Ve Mekanik Makina Imalat Sanayi Ve Ticaret AS
Priority date: 2019-02-20
Filing date: 2019-12-09
Publication date: 2023-02-08
Anticipated expiration: 2039-12-09
Also published as: EP3924558A2; WO2020171785A2; EP3924558A4; WO2020171785A3; TR201902575A2

Description

Technical Field

Invention relates to earth moving machine attachments in construction sector.
The invention particularly relates to a jaw attachment having an end replaceable and rotatable end structure in both mechanics and hydraulic jaws used in bucket mechanisms of earth moving machines.

Background

Earth moving machine is one of heavy machines frequently used today. They are frequently used in construction of buildings as well as repair and collapsing works. The biggest example for the earth moving machine attachment is bucket. Buckets have an attachment called jaw connected to bucket to grab the excavated materials. Materials are grabbed and excavation or carrying process is performed by help of the attachments. Traditional mechanical jaws are mounted onto arm of machine and carrying of material is provided by means of moving of bucket. Also traditional hydraulic jaws are mounted to machine arm and materials are carried out by means of moving of both jaw and bucket. However, use of all those attachments only enables grabbing and displacement of materials. Although attachments, different work types can not be performed by use of them.
Since attachments used in the jaws do not have adjustment mechanism, attachments are to be dismantled for each operation and replaced for related operation. This process causes not only time loss but also probable accidents during operation.
When literature is searched regarding the matter, following applications are encountered.
Patent application numbered TR2017/08917 and entitled "Connection Mechanism Providing Practical Mounting/demounting Various Attachments to/from Earth moving machine" relates to a mechanism providing interconnection of various attachments of vehicles such as excavators/ loaders, buckets etc. That mechanism is characterized in offering an embodiment to provide practical asemble/disassemble attachments of earth moving machines. However, said application does not solve labor and time loss during assembly/disassembly and does not reduce accident risk during replacement as necessity to remove attachments completely from the machine.
Also invention numbered EP1896664B1 "Excavator Demolition Attachment With Interchangeable Jaw Assemblies" relates to an apparatus for attachment providing complete detachment of a jaw group without detachment of main joint pin of vehicles such as excavator, loader and bucket from jaw group. However, although it provides easy removal and installation of attachment from/to jaw group, it is obvious that labor and time loss will be seen because of necessity for complete removal from the machine. Prior art document US 7 617 619 B2 discloses a bucket with jaws.
As a result, the because of existence the said problems mentioned above and failure to provide solutions, it has been necessary to make a development in the related area.

Brief Description of the Invention

The present invention relates to a jaw attachment having various functions meeting the needs mentioned above, eliminating all disadvantages and providing some additional advantages.
Primary purpose of the invention is to provide an attachment embodiment having both jaw junction and riper function thanks to its rotating and moving lower body.
Another purpose of the invention is to provide a jaw attachment not causing labor and time loss for operator and reducing work accident risk thanks to 180-degree rotation of fixed upper body and moving lower body around a central fixed connection axis without detachment from each other and fixing to perform jaw or ripper function.
A further purpose of the invention is to offer an economically advantageous jaw attachment by performing of both jaw and ripper functions by means of one attachment embodiment.
A similar purpose of the invention is to shorten total operation time needed for excavation and collection and thus reduce operation costs thanks to its performance of both jaw and ripper functions by one attachment embodiment.
A further purpose of the invention is to offer an economic attachment embodiment thanks to realization of renewal of tip part getting worn because of contacting excavation materials, by replacement of only lower body (20).
Another purpose of the invention is to provide a multi-function attachment embodiment to be provided with desired functions by means of various designs of moving lower body thanks to separate production of fixed upper body and moving lower body.
In order to achieve purposes mentioned above, the invention is a jaw attachment containing a fixed upper body moving by help of a mechanic or hydraulic cylinder that can be connected to bucket in earth moving machines, comprising bucket connection housings thereon for connection to said ripper bucket by means of connection members, and cylinder connection housings formed on rear surface for connection to said cylinder connection members, moving by means of driving force from said cylinder and providing grabbing and releasing excavation materials characterized in comprising at least a central connection housing formed on upper surface for connection to at least a central connection housing formed on lower surface of said upper body by means of at least a connection member, upper connection housings capable to rotate 180 degrees around central connection axis and formed on upper surface by connection members after rotation movement, moving lower body fixed by lower surface connection holes formed on lower surface of fixed upper body, performing jaw function for collection of excavation material when fixed in direction by help of a pin contained on lower surface and performing ripper function for excavating excavation materials when fixed in direction.
In a preferred embodiment of the invention, said connection member is preferably a bolt of DIN912, M8x45 class.
The structural and characteristic features and working principle and advantages provided by the invention will be understood better in the figures given below and the detailed description by reference to the figures. Therefore, the assessment should be made based on the figures and taking into account the detailed description.

Brief Description of the Figures

Figure 1a is a general view showing mounting of invention with jaw function to earth moving machine.
Figure 1b is a general view showing mounting of invention with ripper function to earth moving machine.
Figure 2a is a perspective view showing demounting of and mounting of invention with jaw function to earth moving machine.
Figure 2b is a perspective view showing demounting of and mounting of invention with ripper function to earth moving machine.
Figure 3 is a schematic view showing action of fixing invention by rotating moving lower body of invention.
Figure 4 is a front detailed view of fixed upper body and moving lower body mounting of invention.

The drawings are not necessarily to be scaled and the details not necessary for understanding the present invention might have been neglected. In addition, the components which are equivalent to great extent at least or have equivalent functions at least have been assigned the same number.

Reference Numbers

1.: Jaw Attachment
10 Upper Body
101 Bucket Connection Housing
102 Cylinder Connection Housing
103 Central Connection Housing
104- Connection Hole
20 Lower Body
201 Central Connection Housing
202- Connection Hole
203 Pin
2.: Bucket
3.: Cylinder
4.: Connection Member
A.: (+x) Horizontal Axis
B.: (-x) Horizontal Axis
Y.: Central Connection Axis (Vertical Axis)

Detailed Description

The present invention relates to a jaw attachment (1) having various functions meeting the needs mentioned above, eliminating all disadvantages and providing some additional advantages.
Invention is a jaw attachment (1) to be used in loader/excavator, basically comprising a fixed upper body (10) in main structure and a moving lower body (20) in rotating end structure. As shown in figures 1a and 1b, preferred embodiment of jaw attachment (1) of the invention is in status mounted to bucket (2) and a hydraulic cylinder (3). Jaw attachment (1) moves back and forth with the driving taken from said hydraulic cylinder (3). Grabbing and releasing excavation material is provided by means of movement of bucket (2) in the embodiment with jaw function as shown in figure 1a. Digging of excavation material is provided by means of back-forth movement (2) of the embodiment with ripper function shown in figure 1b.
Figure 2a shows perspective view of jaw attachment (1) with jaw function in the status when mounted onto earth moving machine. Bucket mounting housings (101) are formed thereon for mounting said fixed upper body (10) to bucket (2) by use of connection members. In a preferred embodiment, said fixed upper body (10) comprises two horizontal profiles connected between two profiles vertically opposite each. Inner surface of vertical profiles is preferably of tooth structure to enhance capability to grab inner surface. Upper body (10) resistance is enhanced by means of two profiles connected side by side vertically between said two horizontal profiles, and rear surface is formed. As shown in figure 3, cylinder connection housings are formed to provide mounting of jaw attachment (1) on rear surface of upper body (10) to hydraulic or mechanical cylinder (3) by use of connection members (102). For mounting said fixed upper body (10) to moving lower body (20) in rotating manner, central connection housing (103) is formed on horizontal profile forming lower surface of upper body (10). In addition, more than one connection hole (104) is provided on same profile in order to provide fixing moving lower body (20) to upper body after rotation by means of connection members.
In a preferred embodiment, said moving lower body (20) is formed by means of fixing vertical three profiles located at intervals to horizontal three profiles located one under another. Inner surface of vertical profiles is preferably of tooth structure to enhance capability to grab inner surface. End part of said vertical profiles comprises tooth (203) in order to perform grabbing or digging operation. Horizontal profile combining said profiles at the top forms upper surface of the lower body (20). For mounting said lower body (20) to upper body (10) in rotating manner, central connection housing (201) is formed on horizontal profile forming upper surface of lower body (20) (Figure 3). In addition, more than one connection hole (202) is provided on same profile in order to provide fixing moving lower body (20) to upper body after rotation by means of connection members.
In the jaw attachment (1) of the invention fixed upper body (10) and moving lower body (20) are interconnected in a manner enabling rotation at 180 degrees around central connection axis (Y) by a connection member (4) inserted into said central connection housings (103, 201). Connection member (4) can be a screw, bolt, nut, stop pin, pin, bushing, joint. The connection member (4) preferred here is bolt and of DIN912, M8x45 class. By help of this bolt, lower body (20) forming end section can rotate without complete detachment from upper body (10).
Moving lower body (20) is rotated in direction A and is fixed by connection members (4) inserted to upper body (10) through connection holes (104, 202) in order to enable jaw attachment (1) to perform jaw function. Detailed view of mounting is shown in Figure 4. The connection member (4) preferred here is bolt and of DIN912, M8x45 class. It can rotate without complete detachment from lower body (20) and upper body (10).
Moving lower body (20) is rotated in direction B and is fixed by connection members (4) inserted to upper body (10) through connection holes (104, 202) in order to enable jaw attachment (1) to perform ripper function. The connection member (4) preferred here is bolt and of DIN912, M8x45 class.
When said bolts are removed, lower body (20) which is approximately 20 kg is not detached fro upper body (10) completely thanks to central connection. Thus there is no load to operator when changing function of attachment. Operator only rotates 180° after removal of bolts and mounts bolds again. Both jaw and ripper function is provided without labor and time loss.
Instead of jaw attachments produced as one part in related art, it is produced in two parts, namely, upper body (10) and lower body (20). While in related art it is needed to replace entire attachment to replace tips worn due to hard contact with excavation material, the invention provides economic value gaining as only lower body is replaced (20) and lower body (20) can be used for two functions. As the embodiment of the invention is produced in two parts, in alternative embodiments, lower body (20) can be designed and produced in a manner to have desired functions. Thus, jaw attachment (1) of the invention can be provided with various functional characteristics.

Claims

A jaw attachment (1) containing a fixed upper body (10) moving by help of a mechanic or hydraulic cylinder (3) that can be connected to bucket (2) in earth moving machine, comprising bucket connection housings (101) thereon for connection to said ripper bucket (2) by means of connection members (4), and cylinder connection housings (102) formed on rear surface for connection to said cylinder (3) by connection members (4), moving by means of driving force from said cylinder (3) characterized in that;
providing grabbing and releasing excavation materials and characterized in comprising at least a central connection housing (201) formed on upper surface for connection to at least a central connection housing (103) formed on lower surface of said upper body (10) by at least one connection member (4); a moving lower body (20) capable to rotate 180 degrees around central connection axis (Y), after rotation movement, fixed by lower surface connection holes (104) formed on lower surface of upper surface connection housings (202) fixed upper body (10) formed on upper surface by connection members (4), performing jaw function for collection of excavation material when fixed in direction (A) by help of a pin (203) contained on lower surface and performing ripper function for excavating excavation materials when fixed in direction (B).
The jaw attachment (1) according to claim 1 characterized in that; said connection member (4) is bolt preferably DIN912, M8x45 class.