Tooth tip set for earthmoving machine

Abstract

A tooth tip set (1) for an earthmoving machine, extending essentially along a longitudinal axis (X) between a front working portion (2) and a rear portion (4) for fastening to a bucket of the earthmoving machine, and comprising: a tooth tip (6) defining a pocket (8) open at the rear; a tooth tip holder (10) has a nose piece (12) defining a front projection (13), said nose piece being adapted to be geometrically coupled with a pocket so as to form a male-female coupling. The set of tooth tips is characterized in that at least one of the inner surface of the pocket and the nose piece has at least one recess or recess region (15, 15 ') extending at least partially in a direction intersecting the longitudinal axis; and at least one of the inner surface of the pocket and the nose piece has at least one projection (16, 16 ') adapted to engage said recess or recessed region such that after said engagement, the tooth tip and the tooth tip holder are integrally coupled.

Description

Technical Field

[0001] This invention belongs to the field of equipment and spare parts for earthmoving machinery (such as excavators).

[0002] In particular, the subject of this invention is a toothed assembly for earthmoving machinery. Background Technology

[0003] Numerous examples of tooth assemblies for earthmoving machinery are known in the art. Typically, a tooth assembly consists of a tooth tip, a tooth tip retainer, and a locking element (such as a locking pin) for locking the tooth tip to the tooth tip retainer.

[0004] Typically, the tooth tip is provided with a recess that opens at the rear, and a locking element hole is provided in a pair of opposing walls of the recess for engagement with a locking element.

[0005] Typically, a tooth retainer has: a body configured to be fixed to the bucket of an earthmoving machine, for example by welding, screw connection or bolt connection; and a nose extending from the body and geometrically coupled to a recess in the tooth tip to form a convex-concave connection.

[0006] In addition, the nose piece is typically provided with a locking element seat suitable for engaging with a locking element, which extends between two opposite surfaces of the nose piece and aligns with the locking element hole when the tooth tip and tooth tip retainer are engaged.

[0007] The tooth tip assembly is made into two separable parts (i.e., the tooth tip and the tooth tip retainer). This advantageously allows for individual replacement of the tooth tip when it wears out, thereby allowing the tooth tip retainer to remain permanently fixed to the bucket of the earthmoving machinery. Therefore, the tooth tip to tooth tip retainer locking system must be adapted to allow for easy and quick tooth tip replacement without misleading the insertion direction of the locking element, and without requiring excessive effort from the operator in inserting the locking element.

[0008] However, this requirement conflicts with the need to make the connection between the tooth tip and the tooth tip holder as strong as possible in order to withstand the considerable stress that the tooth tip experiences while the earthmoving machinery is in operation.

[0009] In some known tooth tip assemblies, in order to make tooth tip replacement operations easier and faster, optimal constraint between the locking element and the locking element seat that engages with the locking element has been sacrificed. As a result, after prolonged use of the tooth tip, the locking element may disengage from the locking element seat, causing the tooth tip to disconnect from the tooth tip holder.

[0010] In other known embodiments, to securely restrain the locking element, a dedicated retaining device, such as a resilient type, is incorporated within the locking element itself to interact with the nose of the tooth tip holder. These embodiments, besides making the tooth tip assembly more complex and therefore more expensive, do not completely solve the problem of preventing the tooth tip from disengaging from the tooth tip holder under harsh operating conditions. In fact, all efforts in this regard are primarily focused on the connection between the locking element, the tooth tip, and the tooth tip holder, and are therefore limited to a finite area of ​​the tooth tip assembly. However, the stresses experienced by the tooth tip assembly during use mean that if these stresses are resisted solely by the locking element, they can cause the locking element to break, subsequently leading to the tooth tip disengaging from the tooth tip holder.

[0011] Other known tooth assemblies have holes in the nose of the tooth holder suitable for engaging with a locking element. These holes, in addition to requiring extra machining of the tooth holder, inevitably weaken the structure of the tooth assembly and its components, thus increasing production costs.

[0012] Other known embodiments of tooth tip assemblies provide an integrated tooth tip-to-tooth tip retainer locking system without requiring a third locking element. However, such an integrated locking system requires tools such as pry bars to lock, unlock, or remove the tooth tips, which are not always readily available in this working environment. Furthermore, this integration necessitates further machining of the tooth tip assembly, leading to increased production costs.

[0013] Other known tooth tip assemblies are based on a helical connection system between the tooth tip and the tooth tip holder. In this system, the nose of the tooth tip holder has a helical shape and connects with the tooth tip, thereby reducing the workload of the locking element, which only has the function of preventing the tooth tip from rotating in the tooth tip holder and preventing subsequent disengagement.

[0014] A typical problem with all these known systems is that, without a locking element, the tooth tips tend to disengage from the tooth tip holder when the tooth tip assembly is tilted relative to the ground or when the tooth tip assembly is positioned vertically relative to the ground.

[0015] Therefore, since any different angle of inclination of the bucket relative to the ground would make such operations of assembling and / or replacing parts difficult or impossible due to the considerable weight of the tooth assembly, the bucket of earthmoving machinery with typical tooth assemblies in the prior art must always be placed in a horizontal position relative to the ground in order to assemble the tooth assembly itself or replace one of its parts.

[0016] Another problem with this system is that the locking element disengages during operations where the bucket of the earthmoving machinery is dragged very frequently to level the ground.

[0017] Another problem with this system is the lack of compatibility and interchangeability of the tooth tip assembly components when they are sourced from different suppliers. In particular, tooth tips and tooth tip holders from different suppliers may have excessive play in their connection, leading to poor component engagement. This ultimately causes the locking element to disengage, requiring correct sizing and positioning of both the tooth tip and the tooth tip holder to maintain proper restraint within the locking element seat.

[0018] Therefore, there remains a strong need to coordinate the requirement to constrain the tooth tip as integrally as possible to the tooth tip holder in order to effectively resist the considerable stress borne by the tooth tip, while facilitating the assembly or replacement of the tooth tip itself, especially when the bucket of earthmoving machinery is tilted relative to the ground. Summary of the Invention

[0019] Therefore, the purpose of this invention is to meet this need while overcoming the shortcomings of existing tooth assemblies for earthmoving machinery.

[0020] These and other objectives are achieved by the toothed assembly for earthmoving machinery according to the independent claim. The dependent claims describe preferred or advantageous embodiments of the invention, including further advantageous aspects. Attached Figure Description

[0021] Nevertheless, the features and advantages of the invention will become apparent from the following description of some preferred embodiments, provided by way of non-limiting example with reference to the accompanying drawings, in which: - Figure 1 This is a perspective view of a tooth tip assembly according to an embodiment of the present invention; - Figure 2 yes Figure 1 Side view of the tooth tip assembly; - Figure 3 yes Figure 1 Top view of the tooth tip assembly; - Figure 4 This is an exploded perspective view of the tooth tip assembly in the previous attached diagram; - Figure 5a and Figure 5b These are two perspective views of the individual tooth tip retainers of the tooth tip assembly in the previous figures; - Figure 6a , Figure 6b , Figure 6c and Figure 6d These are four perspective views of the individual tooth tips of the tooth tip group in the previous attached diagram; - Figure 7a It is a perspective view of the assembled toothed assembly with locking pins provided in the previous attached drawing; - Figure 7b yes Figure 7a Side view of the tooth tip assembly; - Figure 7c yes Figure 7a The vertical cross-section of the tooth tip assembly; - Figure 8 yes Figure 7a The horizontal cross section of the tooth tip group; - Figure 9 yes Figure 7a Exploded three-dimensional view of the tooth cusp assembly; - Figure 10a This is a perspective view of a toothed assembly with a connecting pin and associated locking ring assembly inserted according to an alternative embodiment of the present invention; - Figure 10b yes Figure 10a The vertical cross-section of the tooth tip assembly; - Figure 11a and Figure 11b yes Figure 10a Two three-dimensional views of individual tooth tips of the tooth tip group; - Figure 12 yes Figure 10a The horizontal cross section of the tooth tip group; - Figure 13 yes Figure 10a The cross-section of the tooth tip assembly at the connecting pin and the associated locking ring assembly; - Figure 14 It has a pin component. Figure 10a The vertical cross-section of the tooth tip assembly; - Figure 15 yes Figure 10a Exploded three-dimensional view of the tooth cusp assembly; - Figure 16a and Figure 16b The two steps of inserting the tooth tip into the tooth tip holder are shown in the side view; - Figure 17a and Figure 17b The two steps of angular motion for engaging the tooth tip to the tooth tip retainer are illustrated in a three-dimensional diagram. - Figure 17c and Figure 17d It is a view similar to the previous view, but shows the cross-section of the tooth tip and the tooth tip retainer; - Figure 18a and Figure 18b These are two perspective views of a tooth tip retainer and a tooth tip according to an alternative embodiment of the present invention. Detailed Implementation

[0022] The reference numerals mentioned below are also shown in the aforementioned figures.

[0023] In the remainder of this disclosure, all directional references (e.g., up, down, upward, downward, left, right, left to right, top, bottom, above, below, vertical, horizontal, clockwise, and counterclockwise) are used for identification purposes only to help the reader understand the described embodiments and do not constitute a limitation, particularly regarding the location, orientation, or use of the described embodiments.

[0024] Furthermore, references to connections (e.g., fixation, linkage, connection, etc.) must be interpreted broadly and may include intermediate elements between the connections of elements as well as relative movement between elements.

[0025] Therefore, a reference to a connection does not necessarily mean that two elements are directly connected and have a fixed relationship with each other.

[0026] According to the invention, the toothed assembly 1 for earthmoving machinery extends mainly along the longitudinal axis X between the front working portion 2 and the rear portion 4 for fastening to the bucket of the earthmoving machinery.

[0027] In a general embodiment, the tooth tip assembly includes a tooth tip 6 and a tooth tip retainer 10. The tooth tip defines a recess 8 that opens at its rear. The tooth tip retainer 10 has a nose 12 that defines a forward protrusion 13. The nose 12 is adapted to geometrically engage with the recess 8 to achieve a convex-concave engagement.

[0028] At least one of the inner surface of the recess 8 and the nose piece 12 has at least one recessed or recessed area 15, 15'. The recessed or recessed areas 15, 15' extend at least partially in a direction intersecting the longitudinal axis X. At least the other of the inner surface of the recess 8 and the nose piece 12 has at least one protrusion 16, 16' adapted to engage the recessed or recessed areas 15, 15', such that after the engagement, the tooth tip 6 and the tooth tip retainer 10 are integrally connected.

[0029] The tooth tip 6 of the tooth tip assembly 1 for earthmoving machinery according to the invention constitutes an actual tool for handling earth, while the tooth tip retainer 10 of the tooth tip assembly 1 according to the invention allows the entire tooth tip assembly 1 to be fixed to the bucket of the earthmoving machinery (e.g., an excavator).

[0030] The tooth tip 6 has a front working portion and a rear portion for connection to the tooth tip holder 10. The connection between the tooth tip 6 and the tooth tip holder 10 is convex-concave, with the rear portion of the tooth tip 6 defining a concave portion for connection. More specifically, the rear portion defines a recess 8 that opens at the rear.

[0031] The nose piece 12 forms a convex portion that connects with the tooth tip 6, and is shaped to complement the recess 8 so as to be inserted into and geometrically connected to the recess.

[0032] The nose piece 12 extends from the tooth tip retainer body 10. In one embodiment, the tooth tip retainer body has, for example, a V-shaped configuration for securing to the bucket of earthmoving machinery, for example, by welding, screw connection, or bolt connection.

[0033] In a typical implementation, when the tooth tip assembly 1 is in a vertical position relative to the ground, the constraint reaction force generated by the integral connection between the tooth tip 6 and the tooth tip holder 10 is sufficient to balance the effect of gravity acting on the tooth tip 6.

[0034] In other words, the engagement of at least one protrusion 16, 16' with at least one recessed or recessed area 15, 15' and the subsequent connection between the tooth tip 6 and the tooth tip retainer 10 generate a restraining reaction force that prevents the tooth tip 6 from dislodging from the tooth tip retainer 10 even when the tooth tip assembly 1 is tilted relative to the ground.

[0035] Therefore, by inserting the tooth tip 6 axially into the tooth tip holder 10 and then rotating the tooth tip 6 around the longitudinal axis X, an integral connection between the tooth tip 6 and the tooth tip holder 10 can be achieved.

[0036] Preferably, the integral connection between the tooth tip 6 and the tooth tip retainer 10 is a bayonet engagement.

[0037] Bayonet engagement is a mechanical connection that allows the tooth tip 6 to be quickly engaged with the tooth tip holder 10 by inserting it into the tooth tip holder 10 and then rotating the tooth tip 6 a few degrees about the longitudinal axis X.

[0038] In a typical implementation, the bayonet engagement is designed to compensate for the gravity acting on the tooth tip 6 by means of a locking mechanism that uses rotational motion to maintain a secure connection between the tooth tip 6 and the tooth tip retainer 10.

[0039] In other words, the rotational motion causes at least one protrusion 16, 16' to engage at least one recessed or recessed area 15, 15', resulting in a stable and balanced final configuration that prevents gravity from dislodging the tooth tip 6 from the tooth tip holder 10 and axially locks the tooth tip 6 itself. Thus, despite the force of gravity acting on the tooth tip 6, the bayonet engagement resists through its mechanical structure, thereby preventing the two components from disconnecting.

[0040] In one embodiment, both the inner surfaces of the nose piece 12 and the recess 8 have recessed or recessed areas 15, 15'. Each of the recessed or recessed areas 15, 15' extends at least partially in a direction intersecting the longitudinal axis X. Both the inner surfaces of the nose piece 12 and the recess 8 have protrusions 16, 16'. Each of the protrusions 16, 16' is adapted to engage a corresponding recessed or recessed area 15, 15'.

[0041] In one embodiment, both the inner surfaces of the nose piece 12 and the recess 8 have recessed or indented areas 15, 15' and protrusions 16, 16' extending at least partially in a direction intersecting the longitudinal axis X. The protrusions 16, 16' on the nose piece 12 engage with the recessed or indented areas 15, 15' present on the inner surface of the recess 8, while the protrusions 16, 16' on the inner surface of the recess 8 engage with the recessed or indented areas 15, 15' on the nose piece 12.

[0042] In other words, the presence of a pair of protrusions 16, 16' and a pair of recesses or indentations 15, 15' allows for a double bayonet engagement between the tooth tip 6 and the tooth tip retainer 10.

[0043] According to another aspect of the invention, at least one recessed or recessed region 15, 15' consists of a groove whose dimension in the direction parallel to the longitudinal axis X is much smaller than its dimension in the direction intersecting the longitudinal axis X.

[0044] In one embodiment, each groove defines a dashed line consisting of at least two portions, one of which is an insertion portion substantially parallel to the longitudinal axis X, while a locking portion intersects the longitudinal axis X.

[0045] For example, the locking part is perpendicular to the longitudinal axis X.

[0046] According to one embodiment, the tooth tip 6 has at least one locking element hole 18 formed in a pair of opposing walls 20, 20' defining a recess 8, and adapted to engage with locking elements 22, 23, 23'. Furthermore, a locking element seat 24 adapted to engage with locking elements 22, 23, 23' is formed in the nose member 12. When the tooth tip 6 and the tooth tip retainer 10 are integrally connected, the locking element seat 24 is at least partially aligned with the locking element hole 18.

[0047] In a typical implementation, when the tooth tip 6 and the tooth tip retainer 10 are integrally connected, the locking element seat 24 is fully aligned with the locking element hole 18.

[0048] In a typical embodiment, the locking element seat 24 is defined by a recessed or recessed area 14 formed in the surface of the nose member 12.

[0049] In a typical implementation, the locking element hole 18 and the locking element seat 24 extend along the transverse axis Y, which is perpendicular to the longitudinal axis X.

[0050] Preferably, the transverse axis Y is parallel to the ground, so that the locking elements 22, 23, 23' are positioned parallel to the ground when the earthmoving machinery is in operation.

[0051] According to one embodiment, the nose piece 12 and the recess 8 each have upper surfaces 26, 26' and lower surfaces 28, 28' that are inclined relative to the longitudinal axis X and converge at the front. The nose piece 12 and the recess 8 also have opposite side surfaces 30, 30', 30”, 30””. For example, the opposite side surfaces 30”, 30”” of the recess 8 are substantially vertical.

[0052] In a typical implementation, the locking element seat 24 and the locking element hole 18 extend between opposite side surfaces 30, 30', 30”, 30”.

[0053] According to one embodiment, the recess 8 terminates at the front with a substantially hemispherical bottom 32. The front protrusion 13 defined by the nose piece 12 is substantially hemispherical, such that when the tooth tip 6 and the tooth tip retainer 10 are integrally connected, the front protrusion 13 abuts against the bottom 32.

[0054] According to one embodiment, the front protrusion 13 defined by the nose piece 12 and the body of the tooth tip retainer 10 are connected by a transition surface 36 that is substantially without edges.

[0055] Preferably, the transition surface 36 is substantially hyperboloid in shape.

[0056] In one embodiment, the tooth tip assembly 1 further includes a locking pin 22. The locking pin 22 extends primarily along the pin axis Z and is adapted to engage the locking element seat 24 and the locking element hole 18.

[0057] In one embodiment, the locking pin 22 has an intermediate portion 34 in a direction perpendicular to the pin axis Z, the intermediate portion being adapted to allow the locking pin 22 to be compressively inserted into the locking element hole 18 and the locking element seat 24 in order to constrain the locking pin 22 in the direction of the pin axis Z.

[0058] In a typical implementation, the locking pin 22 has a rear portion defining a rear surface and a front portion defining a front surface.

[0059] Preferably, the middle portion 34 of the locking pin 22 is made of an elastic material (e.g., rubber).

[0060] exist Figure 10a In the alternative embodiment shown, the tooth tip assembly 1 is provided with a connecting pin assembly 23, which includes a connecting pin and an associated locking ring 23'. The connecting pin 23 extends primarily along the pin axis P and is adapted to engage the locking element seat 24 and the locking element hole 18. The locking ring 23' is adapted to constrain the connecting pin 23 in the direction of the pin axis P.

[0061] In a general implementation, the connecting pin 23 is adapted to be inserted into the locking element hole 18 and the locking element seat 24, and is adapted to be constrained by the associated locking ring 23' along the pin axis P.

[0062] Preferably, the connecting pin 23 and the associated locking ring 23' are made of steel.

[0063] The aforementioned tooth cusp group 1 offers many advantages.

[0064] First, the simultaneous existence of the recessed or recessed areas 15, 15' in the nose piece 12 and the corresponding protrusions 16, 16' in the inner surface of the cavity 8, as well as the corresponding protrusions 16, 16' in the nose piece 12 and the recessed or recessed areas 15, 15' in the inner surface of the cavity 8, allows multiple sides of the surface of the nose piece 12 and multiple sides of the inner surface of the cavity 8 to participate in the connection between the tooth tip 6 and the tooth tip retainer 10, thereby greatly enhancing the robustness of the tooth tip assembly 1 and the tear resistance of the tooth tip 6.

[0065] Furthermore, the presence of the double connection mechanism between the tooth tip 6 and the tooth tip holder 10 protects the tooth tip assembly 1 from casting defects that may occur due to the mass production of the components, such as the absence of one of the protrusions 16, 16', thereby reducing the impact of production defects on the product.

[0066] Advantageously, unlike the integrated locking systems of the prior art, the presence of the locking pin 22 allows for the assembly or replacement of the tooth tip 6 using a hammer, without the need for specialized tools that are not always readily available and costly to produce in such working environments.

[0067] Furthermore, the presence of the locking pin 22, made of an easily compressible elastic material, allows for compensation of any excessive play in the connection between the components, provides robustness to the entire tooth assembly 1, and prevents the locking pin 22 from disengaging from the locking element seat 24.

[0068] Advantageously, the tooth tip assembly 1 according to the invention allows for intuitive, safe, and reliable assembly of the tooth tip 6. In fact, due to the geometry of the system, the insertion operation of the locking pin 22 is clear and straightforward, requiring only a simple insertion action followed by a few degrees of rotation to complete the engagement.

[0069] Innovatively, when the earthmoving machinery is in operation, the locking pin 22 is in a horizontal position relative to the ground, thereby avoiding the risk that the tooth tip 6 will disengage from the tooth tip holder 10 due to the bucket being dragged on the ground to level the ground.

[0070] It is highly advantageous that the locking between the tooth tip 6 and the tooth tip retainer 10 is not conditional on the simultaneous complete engagement of both the tooth tip 6 and the tooth tip retainer 10, thereby allowing for faster and more economical interchangeability of the various components of the tooth tip assembly 1.

[0071] Innovatively, locking elements 22, 23, 23' can be inserted into the tooth tip 6 independently of the presence of the tooth tip retainer 10, thereby allowing greater flexibility of the locking mechanism.

[0072] A significant advantage is that the bayonet engagement allows the tooth tip 6 and the tooth tip retainer 10 to remain integrally connected even without the locking pin 22. This allows for flexible installation or replacement of components of the tooth tip assembly 1 while the bucket is positioned, reducing the risk of components suddenly falling off before the locking pin 22 is inserted, especially when the bucket is in a vertical position, thus ensuring greater operator safety.

[0073] Advantageously, the bayonet engagement allows the pressure applied by gravity to be distributed along the entire contact surface between the protrusions 16, 16' and the recessed or recessed areas 15, 15', rather than at a single point. This greatly improves the overall robustness of the tooth tip assembly 1, making it difficult for the tooth tip 6 to disengage from the tooth tip retainer 10.

[0074] Advantageously, the use of a connecting pin 23 and an associated locking ring 23' made of steel allows the operator to handle hot slag.

[0075] Even more advantageously, the use of a connecting pin 23 and an associated locking ring 23' made of steel allows for the formation of a larger tooth tip assembly, capable of supporting the weight of the tooth tip assembly and ensuring its robustness.

[0076] Furthermore, the locking pin 22 is sized so that the intermediate elastic portion is compressed not only during insertion into its seat but also even after insertion is complete. This compression significantly reduces the risk of the locking pin 22 disengaging, for example, due to the tip 6 colliding with an object or debris while the earthmoving machinery is in operation.

[0077] Advantageously, the transition surface 36 between the front protrusion 13 defined by the nose piece 12 and the body of the tooth tip retainer 10 is substantially without edges, thereby allowing the nose piece 12 to be reinforced in one of the areas most susceptible to breakage due to the impact of the tooth tip 6 with an object or debris.

[0078] Finally, the connection between the tooth tip 6 and the tooth tip holder 10 makes the design of the tooth tip assembly 1 extremely compact and uniform, as if the two elements formed a single body. This helps prevent soil, debris, or other working materials from entering the tooth tip assembly 1 and compromising its robustness.

[0079] Obviously, those skilled in the art can modify the above invention to meet occasional needs, and all modifications are within the scope of protection defined by the appended claims.

Claims

1. A toothed assembly (1) for earthmoving machinery, the toothed assembly (1) extending primarily along a longitudinal axis (X) between a front working portion (2) and a rear portion (4) of a bucket to be fixed to the earthmoving machinery, and comprising: - The tooth tip (6) is defined in the recess (8) that is open at the rear. - Tooth tip retainer (10) having a nose (12) defining a front protrusion (13) adapted to be geometrically coupled to the recess (8) to form a convex-concave coupling; The feature is that at least one of the inner surface of the recess (8) and the nose piece (12) has at least one recessed or recessed area (15, 15'), the recessed or recessed area extending at least partially in a direction intersecting the longitudinal axis (X); and at least the other of the inner surface of the recess (8) and the nose piece (12) has at least one protrusion (16, 16') adapted to engage the recessed or recessed area (15, 15'), such that after the engagement, the tooth tip (6) and the tooth tip retainer (10) are integrally connected.

2. The tooth tip assembly according to claim 1, wherein, When the tooth tip assembly (1) is in a vertical position relative to the ground, the constraint reaction force generated by the integral connection between the tooth tip (6) and the tooth tip holder (10) balances the effect of gravity acting on the tooth tip (6).

3. The tooth tip assembly according to any one of the preceding claims, wherein, The integral connection between the tooth tip (6) and the tooth tip holder (10) is achieved by axially engaging the tooth tip (6) in the tooth tip holder (10) and then rotating the tooth tip (6) about the longitudinal axis (X).

4. The tooth tip assembly according to any one of the preceding claims, wherein, The integral connection between the tooth tip (6) and the tooth tip holder (10) is a bayonet engagement.

5. The tooth tip assembly according to any one of the preceding claims, wherein, Both the inner surface of the recess (8) and the nose piece (12) have recessed or recessed areas (15, 15'), each of the recessed or recessed areas (15, 15') extending at least partially in a direction intersecting the longitudinal axis (X), and both the inner surface of the recess (8) and the nose piece (12) have protrusions (16, 16'), each of the protrusions (16, 16') being adapted to engage a corresponding one of the recessed or recessed areas (15, 15').

6. The tooth tip assembly according to any one of the preceding claims, wherein, The at least one recessed or recessed area (15, 15') is composed of a groove, the size of which in the direction parallel to the longitudinal axis (X) is much smaller than the size in the direction intersecting the longitudinal axis (X).

7. The tooth tip assembly according to any one of the preceding claims, wherein, The tooth tip (6) has at least one locking element hole (18) formed in a pair of opposing walls (20, 20') defining the recess (8) and adapted to engage with a locking element (22; 23, 23'); and wherein a locking element seat (24) adapted to engage with the locking element (22; 23, 23') is formed in the nose (12), the locking element seat (24) being at least partially aligned with the locking element hole (18) when the tooth tip (6) and the tooth tip retainer (10) are integrally connected.

8. The tooth tip assembly according to claim 7, wherein, The locking element seat (24) is defined by a recessed or recessed area (14) formed in the surface of the nose (12).

9. The tooth tip assembly according to claim 7 or 8, wherein, The locking element hole (18) and the locking element seat (24) extend along the transverse axis (Y) perpendicular to the longitudinal axis (X).

10. The tooth tip assembly according to any one of claims 7 to 9, wherein, The nose piece (12) and the recess (8) have upper surfaces (26, 26') and lower surfaces (28, 28') that are inclined relative to the longitudinal axis (X) and converge at the front; and wherein the nose piece (12) and the recess (8) have opposite side surfaces (30, 30', 30”, 30”'), and at least the opposite side surfaces (30”, 30”') of the recess (8) are substantially vertical.

11. The tooth tip assembly according to claim 10, wherein the locking element seat (24) and the locking element hole (18) extend between the opposite side surfaces (30, 30', 30”, 30”').

12. The tooth tip assembly according to any one of the preceding claims, wherein, The recess (8) terminates at the front with a substantially hemispherical bottom (32); and the protrusion (13) defined by the nose piece (12) is substantially hemispherical, such that when the tooth tip (6) is integrally connected with the tooth tip retainer (10), the protrusion (13) abuts against the bottom (32).

13. The tooth tip assembly according to any one of claims 7 to 12, further comprising a locking pin (22) extending substantially along a pin axis (Z) and adapted to engage the locking element seat (24) and the locking element hole (18).

14. The tooth tip assembly according to claim 13, wherein, The locking pin (22) has an intermediate portion (34) in a direction perpendicular to the pin axis (Z), the intermediate portion (34) being adapted to allow the locking pin (22) to be compressed into the locking element hole (18) and the locking element seat (24) in order to constrain the locking pin (22) in the direction of the pin axis (Z).

15. The tooth tip assembly according to any one of claims 13 or 14, wherein, The middle portion (34) of the locking pin (22) is made of an elastic material, such as rubber.

16. The tooth tip assembly according to any one of claims 7 to 12, further comprising a connecting pin (23) and an associated locking ring (23'), the connecting pin (23) extending substantially along the pin axis (P) and adapted to engage the locking element seat (24) and the locking element hole (18); and the associated locking ring (23') adapted to constrain the connecting pin (23) in the direction of the pin axis (P).

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