Thread screwing type bucket tooth adaptation system

Abstract

The utility model discloses a thread screwing type bucket tooth adaptation system which comprises a tooth tip, a tooth holder and an adaptation body. The rotary pin comprises a limiting head, a threaded column and a plug column, and a limiting lock groove is formed in one side of the limiting head; the pin lug is provided with a threaded hole and an elastic lock catch located at an orifice of the threaded hole. A bearing part is arranged on the front side of the tooth holder, and holes are formed in two opposite side walls of the bearing part; an adapting part is arranged on the front side of the adapting body, a sleeving part with a sleeving hole is arranged on the rear side of the adapting body, the pin lug is fixed on the transverse inner wall of the sleeving hole, and a longitudinal hole is formed in the top wall of the adapting part; an adaptive hole is formed in the rear side of the tooth tip, and the pin lug is fixed to the inner side of the top wall of the adaptive hole. The bearing part is sleeved in the sleeving hole, the adaptive part is sleeved in the adaptive hole, the rotary pin is screwed in the threaded hole of the pin lug and clamped with the elastic lock catch of the pin lug, and the plunger extends into and abuts against the hole; the self-locking performance of the structure is improved through the thread screwing structure, the stressed threaded hole is formed in the additionally-arranged pin lug, and therefore the hole crack effect is avoided, and the connection stability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of excavating equipment technical field, especially a kind of screwing type bucket tooth adaptation system. BACKGROUND

[0002] The excavating equipment is acted on stone, earth etc. by bucket tooth, and the bucket tooth includes tooth tip and adaptation component for assembling tooth tip in the front side of bucket.

[0003] CN115369947A patent discloses a convenient plug-in lock pin assembly and excavating tooth connecting system, in the system, the lock pin assembly includes locking seat and lock pin;The lock pin includes a conical section and a locking head, the locking head is located at the large diameter end of the conical section;The outer peripheral wall of the locking head is provided with a sliding groove extending axially to the inner end face of the locking head;The circumferential side of the sliding groove is provided with a locking groove;The locking seat is provided with an axially penetrating pin hole matched with the lock pin;The inner wall of the pin hole is provided with a radially protruding locking protrusion;The conical section has a taper surface;During the insertion process of the lock pin, the taper surface plays a guiding role, making the insertion process more smooth;During the removal process of the lock pin, a gap is gradually formed between the taper surface of the conical section and the inner wall of the connecting through hole or the pin hole, so that the lock pin is more easily removed, avoiding the problem that the insertion and removal of the lock pin become difficult due to mud, slurry etc.

[0004] For large excavating teeth, the impact force and torque received by the wear-resistant component during operation are very large. In the technical solution of the above patent document, only the locking protrusion and the locking groove are used to realize connection, the stability of the structure is poor, and it is relatively easy to be damaged, thereby affecting the fixing effect and service life of the excavating tooth. UTILITY MODEL CONTENTS

[0005] In view of the defects in the prior art, the technical problem to be solved by the utility model is to provide a screwing type bucket tooth adaptation system.

[0006] The utility model adopts the technical scheme for solving the above technical problems: a screwing type bucket tooth adaptation system, including tooth tip, tooth seat, adaptation body between tooth tip and tooth seat, first pin ear, second pin ear, first rotating pin and second rotating pin;

[0007] The first rotating pin and the second rotating pin all include limiting head, threaded column and plug column, one side of the limiting head is provided with limiting lock groove;The first pin ear and the second pin ear are both provided with threaded hole and elastic lock at the threaded hole orifice;

[0008] The front side of the tooth holder is provided with a bearing part, and opposite two side walls of the bearing part are each provided with a first hole; the front side of the adapter is provided with an adapter part, and the rear side is provided with a sleeving part with a sleeving hole, a first pin ear is fixed on the transverse inner wall of the sleeving hole, and the top wall of the adapter part is provided with a longitudinal second hole; the rear side of the tooth tip is provided with an adapter hole matched with the adapter part, and a second pin ear is fixed on the inner side of the top wall of the adapter hole;

[0009] The bearing part is sleeved in the sleeving hole, the first rotating pin is transversely screwed in the threaded hole of the first pin ear through the first through hole of the sleeving part, and is clamped by the elastic lock of the first pin ear, and the plug column of the first rotating pin extends into and abuts against the first hole;

[0010] The adapter part is sleeved in the adapter hole, the second rotating pin is longitudinally screwed in the threaded hole of the second pin ear through the tooth tip top wall, and is clamped by the elastic lock of the second pin ear, and the plug column of the second rotating pin extends into and abuts against the second hole.

[0011] The preferred technical solution adopted by the utility model to solve the above technical problems is that opposite two side walls of the bearing part are each provided with a side boss located at the rear side of the hole of the first hole; the transverse two side hole walls of the sleeving hole are provided with side insertion grooves, and the first pin ear is inserted in the side insertion grooves from back to front; when the bearing part is sleeved in the sleeving hole, the side boss is located at the rear side of the side insertion groove and abuts against the first pin ear.

[0012] The preferred technical solution adopted by the utility model to solve the above technical problems is that the adapter part is recessed downward in the sleeving part to form a stepped structure; the front end of the adapter part is provided with a recessed groove recessed downward, the recessed groove extends rearward to form a notch in the sleeving part, and the bottom wall of the recessed groove is provided with a longitudinal second hole;

[0013] The top wall of the adapter hole is provided with a lug, the lug is provided with a top insertion groove, the second pin ear is inserted in the top insertion groove from back to front, and the lug extends rearward to form a lug ear;

[0014] When the adapter part is sleeved in the adapter hole, the lug is inserted into the recessed groove, and the lug ear is in the recessed part and abuts against the rear wall.

[0015] The preferred technical solution adopted by the utility model to solve the above technical problems is that the diameter of the limiting head is greater than the diameter of the threaded column, and the diameter of the threaded column is greater than the diameter of the plug column.

[0016] The utility model discloses a preferred technical scheme which solves the above technical problems, and is characterized by comprising an annular limiting portion arranged between the limiting head and the threaded column, wherein the diameter of the annular limiting portion is greater than that of the threaded column and less than that of the limiting head, so that the first rotating pin and the second rotating pin are coaxial annular stepped structures; one side of the annular limiting portion is provided with a plurality of wave-shaped protrusions, and a plurality of recesses of the wave-shaped protrusions form the limiting lock groove, and the circumferential protrusion height of the wave-shaped protrusions is not greater than the outer circumferential surface of the limiting head.

[0017] The utility model discloses a preferred technical scheme which solves the above technical problems, and is characterized by comprising an annular limiting portion arranged between the limiting head and the threaded column, wherein the diameter of the annular limiting portion is greater than that of the threaded column and less than that of the limiting head, so that the first rotating pin and the second rotating pin are coaxial annular stepped structures; one side of the annular limiting portion is provided with a plurality of wave-shaped protrusions, and a plurality of recesses of the wave-shaped protrusions form the limiting lock groove, and the circumferential protrusion height of the wave-shaped protrusions is not greater than the outer circumferential surface of the limiting head.

[0018] The utility model discloses another technical scheme which solves the above technical problems, and is characterized by comprising a threaded screwing type bucket tooth adaptation system,

[0019] which comprises a tooth tip, a tooth seat, an adaptation body located between the tooth tip and the tooth seat, a first pin ear, a second pin ear, a first rotating pin and a second rotating pin.

[0020] The first rotating pin and the second rotating pin each comprise a limiting head, a threaded column and a plug column, and one side of the limiting head is provided with a limiting lock groove; the first pin ear and the second pin ear are each provided with a threaded hole and an elastic lock catch located at the hole opening of the threaded hole.

[0021] The front side of the tooth seat is provided with a bearing portion, and the opposite two side walls of the bearing portion are each provided with a first hole and a side boss located at the rear side of the hole opening of the first hole; the lateral two side hole walls of the sleeve joint hole are provided with side insertion grooves, and the first pin ear is inserted into the side insertion grooves from the rear to the front; when the bearing portion is sleeved in the sleeve joint hole, the side boss is located at the rear side of the side insertion groove and abuts against the first pin ear.

[0022] The front side of the adaptation body is provided with an adaptation portion, and the rear side is provided with a sleeve joint portion with a sleeve joint hole, and the first pin ear is fixed on the lateral inner wall of the sleeve joint hole.

[0023] The adaptation portion is recessed downward in the sleeve joint portion to form a stepped structure; the front end of the adaptation portion is provided with a downwardly concave recessed groove, the recessed portion extends rearward to form a gap in the sleeve joint portion, and the bottom wall of the recessed groove is provided with a longitudinal second hole.

[0024] The rear side of the tooth tip is provided with an adaptation hole matched with the adaptation portion, the inner side of the top wall of the adaptation hole is provided with a protruding block, the protruding block is provided with a top insertion groove, the second pin ear is inserted into the top insertion groove from the rear to the front, and the protruding block extends rearward to form a protruding ear.

[0025] The bearing part is sleeved in the sleeve joint hole, the first rotating pin is screwed in the threaded hole of the first pin ear in a transverse direction through the first through hole of the sleeve joint part, and is clamped by the elastic lock catch of the first pin ear, the plug post of the first rotating pin extends into and abuts against the first hole;

[0026] The adapting part is sleeved in the adapting hole, the protrusion is inserted into the recessed groove, the lug is in the inner recess and abuts against the back wall, the second rotating pin is screwed in the threaded hole of the second pin ear in a longitudinal direction through the tooth tip top wall, and is clamped by the elastic lock catch of the second pin ear, and the plug post of the second rotating pin extends into and abuts against the second hole.

[0027] The diameter of the plug post gradually decreases away from the limiting head to have an outer conical surface, and the first hole and the second hole are both tapered holes.

[0028] The diameter of the plug post gradually decreases away from the limiting head to have an outer conical surface, and the first hole and the second hole are both tapered holes.

[0029] The annular limiting part between the limiting head and the threaded column has a diameter greater than that of the threaded column and smaller than that of the limiting head, so that the first rotating pin and the second rotating pin are coaxial annular stepped structures, and the limiting lock groove is arranged on one side of the annular limiting part.

[0030] The side of the annular limiting part is provided with a plurality of wave-shaped protrusions, a plurality of recesses of the wave-shaped protrusions form the limiting lock groove, and the circumferential protrusion height of the wave-shaped protrusions is not more than the outer circumferential surface of the limiting head.

[0031] Another technical solution for solving the above technical problems is a threaded screwing type tooth fitting system, which comprises a tooth tip, a tooth seat, a second pin ear and a second rotating pin.

[0032] The second rotating pin comprises a limiting head, a threaded column and a plug post, one side of the limiting head is provided with a limiting lock groove, and the second pin ear is provided with a threaded hole and an elastic lock catch at the hole opening of the threaded hole.

[0033] The front side of the tooth seat is provided with an adapting body, the front side of the adapting body is provided with an adapting part, the adapting part is recessed downward to form a stepped structure with the rear section of the adapting body, the front end of the adapting part is provided with a recessed groove recessed inward, the recessed groove extends rearward to the sleeve joint part to form a gap, and the bottom wall of the recessed groove is provided with a longitudinal second hole.

[0034] The tooth tip rear side is provided with an adapter hole matched with the adapter part, an inner side of a top wall of the adapter hole is provided with a protrusion, the protrusion is provided with a top insertion slot, the second pin ear is inserted into the top insertion slot from rear to front, and the protrusion extends rearward to form a lug;

[0035] The adapter part is sleeved in the adapter hole, the protrusion is inserted into the recessed slot, the lug is inserted into the inner recess and abuts against the rear wall, the second rotating pin is longitudinally screwed in the threaded hole of the second pin ear and is clamped by the elastic lock of the second pin ear, and the plug column of the second rotating pin extends into and abuts against the second hole.

[0036] The diameter of the limiting head is greater than the diameter of the threaded column, and the diameter of the threaded column is greater than the diameter of the plug column.

[0037] The diameter of the plug column gradually decreases away from the limiting head to have an outer conical surface, and the first hole and the second hole are both tapered holes.

[0038] An annular limiting part is arranged between the limiting head and the threaded column, the diameter of the annular limiting part is greater than the diameter of the threaded column and smaller than the diameter of the limiting head, so that the first rotating pin and the second rotating pin are coaxial annular stepped.

[0039] One side of the annular limiting part is provided with a plurality of wave-shaped protrusions, a plurality of recesses of the wave-shaped protrusions form the limiting lock slot, and the circumferential protrusion height of the wave-shaped protrusions is not greater than the outer circumferential surface of the limiting head.

[0040] Another technical solution adopted by the utility model to solve the above technical problems is a threaded screw type bucket tooth adapter system,

[0041] The threaded screw type bucket tooth adapter system comprises a tooth tip, a tooth seat, a pin ear and a rotating pin.

[0042] The rotating pin comprises a limiting head, a threaded column and a plug column, one side of the limiting head is provided with a limiting lock slot, and the pin ear is provided with a threaded hole and an elastic lock at the hole mouth of the threaded hole.

[0043] The tooth seat front side is provided with a bearing part, the opposite two side walls of the bearing part are both provided with holes, the tooth tip rear side is provided with a sleeve joint part with a sleeve joint hole, the opposite two side walls of the bearing part are both provided with side protrusions located at the rear side of the hole mouth of the hole, the transverse two side hole walls of the sleeve joint hole are provided with side insertion slots, and the pin ear is inserted into the side insertion slots from rear to front.

[0044] The bearing part is sleeved in the sleeve joint hole, the side boss is located at the rear side of the side slot and abuts against the pin lug, the pin is screwed in the threaded hole of the pin lug in a transverse direction and is clamped by the elastic lock of the pin lug, and the plug column of the pin extends into and abuts against the hole.

[0045] The preferred technical solution for solving the above technical problems is that the diameter of the limiting head is greater than the diameter of the threaded column, and the diameter of the threaded column is greater than the diameter of the plug column.

[0046] The diameter of the plug column gradually decreases away from the limiting head to have an outer conical surface, and the first hole is a tapered hole.

[0047] The preferred technical solution for solving the above technical problems is that an annular limiting part is arranged between the limiting head and the threaded column, the diameter of the annular limiting part is greater than the threaded column and less than the limiting head, so that the pin presents a coaxial annular stepped shape.

[0048] One side of the annular limiting part is provided with a plurality of wave-shaped protrusions, a plurality of recesses of the wave-shaped protrusions form the limiting lock groove, and the circumferential protrusion height of the wave-shaped protrusions does not exceed the outer circumferential surface of the limiting head.

[0049] Compared with the prior art, the utility model has the advantages that the threaded screwing structure improves the self-locking property of the structure, and provides sufficient torque bearing capacity, so as to ensure the stability and safety of the connection. The threaded hole subjected to stress is arranged on the additionally added pin lug instead of the tooth seat, tooth tip or adapter, so that the crack effect of the hole structure due to stress is avoided, and the firmness and stability of the whole system are improved. BRIEF DESCRIPTION OF DRAWINGS

[0050] The utility model will be further described in detail below in combination with the drawings and example one, but the person skilled in the art will appreciate that these drawings are only drawn for the purpose of explaining example one and therefore should not be regarded as a limitation on the scope of the utility model. In addition, unless specifically indicated, the drawings only schematically show the composition or structure of the described objects and can include exaggerated display, and the drawings are not necessarily drawn to scale.

[0051] Figure 1 It is a schematic view of the tooth of the excavating equipment of the utility model example one;

[0052] Figure 2 It is an exploded view of the tooth of the excavating equipment of the utility model example one;

[0053] Figure 3 It is a schematic view of the tooth tip of the utility model example one;

[0054] Figure 4 Schematic diagram of the adapter of the utility model embodiment one Figure 1 ;

[0055] Figure 5 Schematic diagram of the adapter of the utility model embodiment one Figure 2 ;

[0056] Figure 6 Schematic diagram of the first pin or the second locking pin of the utility model embodiment one;

[0057] Figure 7 Schematic diagram of the bucket tooth of the excavating equipment of the utility model embodiment two;

[0058] Figure 8 Schematic diagram of the tooth holder of the utility model embodiment two;

[0059] Figure 9 Schematic diagram of the tooth tip of the utility model embodiment two;

[0060] Figure 10 Assembled state schematic diagram of the pin lug and the pin of the utility model embodiment one;

[0061] Figure 11 Schematic diagram of the pin of the utility model embodiment one.

[0062] Reference signs:

[0063] Embodiment one: tooth tip 1, adapter 2, tooth holder 3, first pin 4, first pin lug 5, second pin lug 6, elastic lock 7, second pin 8, adapter hole 11, bearing part 31, first hole 32, side boss 33, sleeve joint hole 22, sleeve joint part 23, side slot 26, first through hole 24, threaded hole e, limiting head 43, threaded column 42, plug column 41, limiting lock slot f, annular limiting part 44, wavy protrusion n, recessed groove g, notch h, protruding block 14, top slot j, lug k, first inclined surface a, second inclined surface b.

[0064] Embodiment two: tooth tip 1', tooth holder 3', pin lug 2', pin 4', limiting head 43', threaded column 42', plug column 41', limiting lock slot f', threaded hole e', elastic lock 7', bearing part 31', hole 32', sleeve joint hole 22', sleeve joint part 23', side boss 33', side slot 26', first strip inclined surface a', strip slot q, second strip inclined surface b', strip joint part w, annular limiting part 44', wavy protrusion n'. DETAILED DESCRIPTION

[0065] Embodiment one of the present application will be described in detail below with reference to the drawings. Those skilled in the art will appreciate that the description is merely descriptive; exemplary, and should not be construed as limiting the scope of protection of the present application.

[0066] It should be noted that similar reference numerals refer to similar items in the following drawings, and therefore, once an item is defined in one drawing, it can no longer be defined and explained in subsequent drawings.

[0067] In the description of the present application, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc. indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the present application is used, and are merely for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present application. The terms "first" and "second" are merely for the convenience of understanding and have no other directional meaning, and should not be construed as limiting the present application.

[0068] Embodiment one:

[0069] As shown in Figures 1-2 , the present embodiment provides a threaded screw type tooth adapter system, which comprises a tooth tip 1, a tooth seat 3, and an adapter body 2 located between the tooth tip 1 and the tooth seat 3.

[0070] As shown in Figures 2-3 , the tooth tip 1, as the part directly contacting the material, is made of high-strength wear-resistant material, and the rear side is provided with an adapter hole 11 matched with the adapter body 2, which is used for close cooperation with the adapter body 2 to ensure uniform stress and effective force transmission.

[0071] As shown in Figures 1-2 , the tooth seat 3 is fixed on the bucket body of the excavator or loader, and the front side is provided with a bearing part 31 for supporting and fixing the adapter body 2. The opposite two side walls of the bearing part 31 are each provided with a first hole 32 for receiving the plug column 41 of the first rotating pin 4 to realize horizontal locking.

[0072] As shown in Figure 2 , 4 -5, the adapter body 2, as a key component connecting the tooth tip 1 and the tooth seat 3, is provided with an adapter part 21 on the front side, which is matched with the adapter hole 11 of the tooth tip 1, and is provided with a sleeve part 23 having a sleeve hole 22 on the rear side, and the two lateral walls of the sleeve hole 22 are provided with a first through hole 24 for installing the first rotating pin 4. The top wall of the adapter part 21 is provided with a longitudinal second hole 25 for receiving the plug column 41 of the second rotating pin 8 to realize longitudinal locking.

[0073] In this embodiment, the connection between the tooth tip 1 and the adapter 2, and the connection between the adapter 2 and the tooth base 3, are achieved through the engagement of the lug and the locking pin. Specifically, the first lug 5 and the second lug 6 are respectively fixed to the inner side of the transverse inner wall of the sleeve hole 22 of the adapter 2 and the inner side of the top wall of the adapter hole 11 of the tooth tip 1. Both are provided with a threaded hole e and an elastic latch 7 located at the opening of the threaded hole e.

[0074] like Figures 2-6 As shown, both the first pivot pin 4 and the second pivot pin 8 include a limiting head 43, a threaded post 42, and a plug 41. A limiting locking groove f is provided on one side of the limiting head 43 for engaging with the elastic locking buckle 7 of the pin lug. The first pivot pin 4 is arranged laterally, passing through the first through hole 24 of the adapter 2 and screwed into the threaded hole e of the first pin lug 5; the second pivot pin 8 is arranged longitudinally, passing through the top wall of the tooth tip and screwed into the threaded hole e of the second pin lug 6. The threaded post 42 is used to screw into the threaded hole e of the corresponding pin lug. The plug 41 extends into and abuts against the first hole 32 of the tooth seat 3 or the second hole 25 of the adapter 2 to achieve fixation. The limiting head 43 is restricted to the outside of the pin lug. The elastic locking buckle 7 has an elastic expansion and contraction capability along the radial direction of the threaded hole e, automatically engaging the limiting locking groove f of the pivot pin to prevent loosening.

[0075] In this embodiment, the threaded screw structure improves the self-locking property of the structure and provides sufficient torque bearing capacity, thereby ensuring the stability and safety of the connection. The stress-bearing threaded hole e is located on the additionally added first lug 5 and second lug 6, rather than on the gear seat 3 and adapter 2, thus avoiding cracking of the hole structure due to stress and improving the overall robustness and stability of the system.

[0076] Unlike conventional digging tooth structures, this embodiment adds an adapter 2 between the tooth tip 1 and the tooth base 3 to buffer the force exerted by the tooth tip 1 on the tooth base 3. Furthermore, since the tip of the tooth 1 is usually the most prone to wear during operation, adding an adapter 2 between the tooth tip 1 and the tooth base 3 reduces the cost of replacing the tooth tip 1 each time compared to using a conventionally long tooth tip 1.

[0077] It should be noted that the first pivot pin 4 is set laterally and the second pivot pin 8 is set longitudinally. This installation method can effectively distribute the force generated by the bucket teeth during operation to multiple directions, avoiding stress concentration in a single direction, thereby significantly improving the stability and durability of the bucket tooth adaptation system.

[0078] like Figure 2 , 4As shown, the opposite two side walls of the bearing part 31 are each provided with a side boss 33 located at the rear side of the hole opening of the first hole 32. The transversely two side hole walls of the sleeve hole 22 are provided with side slots 26, and the first pin ear 5 is inserted into the side slots 26 from the rear to the front. When the bearing part 31 is sleeved in the sleeve hole 22, the side boss 33 is located at the rear side of the side slot 26 and abuts against the first pin ear 5, limiting its disengagement to the rear. This not only enhances the stability of the structure, but also prevents the first pin ear 5 from loosening or falling off when subjected to impact force, thereby further improving the overall stability and safety of the tooth adapter system.

[0079] In addition, the inner side surface of the side boss 33 is transversely tightly abutted against the inner wall of the sleeve hole 22 after entering the sleeve hole 22, not only enhancing the structural strength of the adapter 2, but also reducing the assembly gap between the bearing part 31 and the adapter 2, effectively preventing loosening or vibration caused by excessive gap, thereby further improving the overall stability and safety of the tooth adapter system.

[0080] As shown in Figure 2 , 5 , the adapter part 21 is recessed downwardly in the sleeving part 23 to form a stepped structure. Moreover, in actual application, the stepped structure helps to disperse stress and improve structural strength. In addition, such stepped structure provides a deeper embedding space for the tooth tip 1, further increases the contact area, and enhances the connection stability between the two.

[0081] As shown in Figure 2 , 3 , 5, the front end of the adapter part 21 is provided with a recessed groove g which is recessed inwardly downwardly, the recessed groove g extends rearwardly to the sleeving part 23 to form a notch h, and the longitudinal second hole 25 is arranged on the bottom wall of the recessed groove g. The inner side of the top wall of the adapter hole 11 is provided with a lug 14, the lug 14 is provided with a top slot j, and the second pin ear 6 is inserted into the top slot j from the rear to the front, and the lug 14 extends rearwardly to form a lug k. When the adapter part 21 is sleeved in the adapter hole 11, the lug 14 is inserted into the recessed groove g, and the lug k is inserted into the recessed part and abuts against the rear wall. It can be seen that in this embodiment, the recessed groove g provides mounting space for the second pin ear 6 and the top slot j, and the bottom wall and the rear wall of the recessed groove g limit the freedom of movement of the second pin ear 6, thereby improving the structural stability. In addition, through the multiple concave-convex engagement of the lug 14 and the recessed groove g, the lug k and the notch h, the contact area between the adapter 2 and the tooth tip 1 is increased, and the movement of the tooth tip 1 in the longitudinal direction is further limited, thereby improving the stability of the connection.

[0082] Preferably, as shown in Figure 2 , 3 , 5, the two inner side walls of the top slot j are inclined inwardly toward the adapter hole to form a first inclined surface a, and the two side walls of the second pin ear 6 are matched with a second inclined surface b, and the second pin ear 6 can be more stably arranged in the top slot j through the inclined surface cooperation.

[0083] Preferably, as Figure 3 The inner side of the lower wall of the adapter 21 is also provided with a central protrusion 15 opposite the protrusion 14, and the central protrusion 15 also forms a secondary lug y beyond the rear end of the adapter 21. The other side of the adapter 21 opposite the recessed groove g is provided with a structure consistent with the recessed groove g, thereby realizing the engagement connection of the tooth tip and the adapter.

[0084] As Figure 6 shown, the diameter of the plug column 41 gradually decreases away from the limiting head 43 to have an outer tapered surface. This not only plays a guiding role in the process of penetrating, but more importantly, when the plug column 41 cooperates with the first hole 32 or the second hole 25 of the tapered hole shape, since both of them have tapered features, a centering effect will naturally occur between them. During assembly, even if there is a certain initial deviation, it can be automatically centered through the guidance of the taper, ensuring the accuracy of the final connection. When they are tightly fitted, the contact area will be relatively large, further improving the stability of the connection.

[0085] As Figure 6 shown, the diameter of the limiting head 43 is greater than the diameter of the threaded column 42, and the diameter of the threaded column 42 is greater than the diameter of the plug column 41. An annular limiting portion 44 is provided between the limiting head 43 and the threaded column 42, and the diameter of the annular limiting portion 44 is greater than the diameter of the threaded column 42 and less than the diameter of the limiting head 43, so that the first rotary pin 4 and the second rotary pin 8 both have a coaxial annular stepped shape. One side of the annular limiting portion 44 is provided with a plurality of wave-shaped protrusions n, and the recesses of the wave-shaped protrusions n form limiting lock grooves f, and the circumferential protrusion height of the wave-shaped protrusions n does not exceed the outer circumferential surface of the limiting head 43. The limiting lock grooves f formed by the wave-shaped protrusions n provide more locking options so that the elastic lock 7 can be adaptively placed in the appropriate limiting lock groove f, improving the stability and flexibility of the lock.

[0086] And the wave-shaped protrusions n are arranged on the annular limiting portion 44 between the limiting head 43 and the threaded column 42, and the circumferential protrusion height does not exceed the outer circumferential surface of the limiting head 43, which not only avoids interference during screwing, but also avoids affecting the final positioning, and can realize hidden and avoid the adverse effects of external medium on the cooperation with the elastic lock 7.

[0087] The limiting head 43 is the outermost part of the entire device, and it provides additional support area for the connection through its larger diameter, enhancing the stability of the connection. The outer circumferential surface of the limiting head 43 can have a gradually tapered shape from the outside to the inside, and the aperture of the through hole of the tooth tip 1 or the adapter 2 matched therewith has a horn shape matching the same, thereby increasing the contact area and also centering the force inward. In addition, the surface of the limiting head 43 can also be provided with anti-skid lines, and the arrangement of the anti-skid lines can further increase the friction, naturally playing a self-locking and anti-loosening role, thereby improving the connection stability.

[0088] Example two:

[0089] As Figures 7-11 shown, the embodiment is a simplification based on embodiment one, providing a thread screwing type tooth adapter system, including tooth tip 1', tooth holder 3', pin lug 2' and pin 4'. Pin 4' includes limiting head 43', threaded column 42' and plug column 41', and one side of limiting head 43' is provided with limiting lock groove f'. Pin lug 2' is provided with threaded hole e' and elastic lock 7' located at the hole mouth of threaded hole e'.

[0090] As Figures 8-9 shown, tooth holder 3' is provided with bearing part 31' on the front side, and the opposite two side walls of bearing part 31' are each provided with hole 32'. Tooth tip 1' is provided with sleeving part 23' with sleeving hole 22' on the back side, and the opposite two side walls of bearing part 31' are each provided with side boss 33' located at the back side of the hole mouth of hole 32'. The transverse two side hole walls of sleeving hole 22' are provided with side insertion groove 26', and pin lug 2' is inserted into side insertion groove 26' from back to front.

[0091] As Figures 7-11 shown, bearing part 31' is sleeved in sleeving hole 22', side boss 33' is located at the back side of side insertion groove 26' and abuts against pin lug 2', pin 4' is transversely threaded in threaded hole e' of pin lug 2' through the through hole of sleeving part 23' and is clamped by elastic lock 7' of pin lug 2', and plug column 41' of pin 4' extends into and abuts against hole 32'.

[0092] In this embodiment, the self-locking property of the structure is improved by the thread screwing structure, and sufficient torque bearing capacity is also provided, thereby ensuring the stability and safety of the connection. The threaded hole e' under stress is arranged on the additionally added pin lug 2' instead of tooth holder 3' or tooth tip 1', thereby avoiding the crack effect of the hole structure due to stress, and thus improving the firmness and stability of the entire system.

[0093] As Figure 9 , 10As shown, the upper and lower slot walls of the side slot 26' are provided with a first strip-shaped inclined surface a', and the first strip-shaped inclined surface a' forms an inwardly recessed strip-shaped slot q. The pin lug 2' is provided with a second strip-shaped inclined surface b' corresponding to the first strip-shaped inclined surface a', and the second strip-shaped inclined surface b' forms a strip-shaped insertion portion w at the position. The pin lug 2' is inserted into the side slot 26' of the tooth tip 1', the strip-shaped slot q is inserted into the strip-shaped insertion portion w, and the pin lug 2' cannot rotate circumferentially in the side slot 26'. The through hole of the transverse hole wall of the sleeve hole 22' and the threaded hole e' are opposite and through, forming a channel for the extension of the pin 4'. Through this inclined concave-convex insertion structure, the contact area between the pin lug 2' and the tooth tip 1' is increased, further limiting the movement of the pin lug 2', making the entire connection structure more stable, and when the tooth tip 1' is impacted or vibrated, it can more effectively disperse and resist external force, thereby strengthening the overall impact resistance of the tooth tip 1', helping to prevent connection loosening or damage caused by long-term use or harsh working environment.

[0094] The pin lug 2' has an inclined inner end face, and the side slot 26' has an inclined slot bottom matching the inclined inner end face. This contact method not only increases the contact area, but also makes the contact more uniform, thereby improving the tightness and stability of the connection. During assembly, an automatic centering effect occurs between the pin lug 2' and the side slot 26'. Even if there is a certain deviation in the initial position, the inclined surface will guide the pin lug 2' to gradually adjust to the correct position, ensuring the accuracy of the final connection. This automatic centering effect helps to reduce assembly errors and improve connection tightness.

[0095] As shown in Figure 8 The opposite two side walls of the bearing part 31' are each provided with a side boss 33' located behind the hole opening of the hole 32'. When the bearing part 31' is sleeved in the sleeve hole 22', the side boss 33' is located behind the side slot 26' and abuts against the pin lug 2', limiting it from disengaging backward. This not only enhances the stability of the structure, but also prevents the pin lug 2' from loosening or falling off when subjected to impact force, thereby further improving the overall stability and safety of the tooth adapter system. In addition, after the side boss 33' enters the sleeve hole 22', its inner side surface is transversely tightly abutted against the inner wall of the sleeve hole 22', not only enhancing the structural strength of the adapter 2, but also reducing the assembly gap between the bearing part 31' and the tooth tip 1', effectively preventing loosening or vibration caused by excessive gap, thereby further improving the overall stability and safety of the tooth adapter system.

[0096] As shown in Figure 11As shown, the diameter of the plunger 41' gradually decreases away from the limiting head 43' to have an outer conical surface. This not only serves as a guide during insertion, but more importantly, when the plunger 41' and the conical hole 32' mate, both exhibiting conical characteristics, a natural centering effect is generated between them. During assembly, even with some initial deviation, they can automatically center through the conical guidance, ensuring the accuracy of the final connection. When they fit tightly, the contact area is relatively large, further improving the stability of the connection.

[0097] like Figure 11 As shown, the diameter of the limiting head 43' is larger than the diameter of the threaded post 42', and the diameter of the threaded post 42' is larger than the diameter of the plug post 41'. An annular limiting portion 44' is provided between the limiting head 43' and the threaded post 42'. The diameter of the annular limiting portion 44' is larger than the threaded post 42' but smaller than the limiting head 43', causing the pivot pin 4' to present a coaxial annular stepped shape. One side of the annular limiting portion 44' has several wavy protrusions n', and several recesses of the wavy protrusions n' form a limiting locking groove f'. The circumferential protrusion height of the wavy protrusions n' does not exceed the outer circumferential surface of the limiting head 43'. The limiting locking groove f' formed by the wavy protrusions n' provides more locking options, allowing the elastic latch 7' to adaptively fall into the appropriate locking groove, improving the stability and flexibility of the latch.

[0098] The wavy protrusion n' is placed on the annular limiting part 44' between the limiting head 43' and the threaded post 42', and the circumferential protrusion height does not exceed the outer circumferential surface of the limiting head 43'. This avoids interference during the tightening process and avoids the impact on the final positioning. It also conceals the external medium to prevent adverse effects on its cooperation with the elastic lock 7'.

[0099] As the outermost part of the entire device, the limiting head 43', with its larger diameter, provides additional support area for the connection, enhancing its stability. The outer circumference of the limiting head 43' can be tapered from the outside in, and the orifice of the mating tooth tip 1' has a matching flared shape, thus increasing the contact area and centering the force inward. Furthermore, the surface of the limiting head 43' can be provided with anti-slip textures, which further increase friction, naturally providing a self-locking and anti-loosening effect, thereby improving connection stability.

[0100] The above has introduced the thread screwing type bucket tooth adaptation system provided by the utility model, the principle and implementation mode of the utility model have been described in this paper by applying specific examples, and the above embodiment description is only for helping to understand the utility model and core idea. It should be pointed out that, for ordinary skilled person in the art, without departing from the principle of the utility model, the utility model can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the utility model claim.

Claims

1. A threaded screw-on bucket tooth adapter system, characterized in that: It includes a tooth tip, a tooth base, an adapter located between the tooth tip and the tooth base, a first lug, a second lug, a first screw pin, and a second screw pin; The first and second pivot pins each include a limiting head, a threaded post, and a plug post. A limiting locking groove is provided on one side of the limiting head. The first and second pin ears each have a threaded hole and an elastic latch located at the opening of the threaded hole. The tooth base has a bearing portion on its front side, and the bearing portion has a first hole on each of its opposite side walls; the adapter has an adapter portion on its front side and a socket portion with a socket hole on its rear side; the first pin lug is fixed on the transverse inner wall of the socket hole, and the top wall of the adapter portion has a longitudinal second hole; the tooth tip has an adapter hole that matches the adapter portion on its rear side, and the second pin lug is fixed on the inner side of the top wall of the adapter hole; The bearing part is fitted into the sleeve hole, the first rotating pin passes laterally through the first through hole of the sleeve part and is screwed into the threaded hole of the first pin ear, and is locked by the elastic latch of the first pin ear, and the plug of the first rotating pin extends into and abuts against the first hole. The adapter is fitted into the adapter hole, the second swivel pin passes longitudinally through the top wall of the tooth tip and is screwed into the threaded hole of the second pin ear, and is engaged by the elastic locking of the second pin ear, and the plug of the second swivel pin extends into and abuts against the second hole.

2. The threaded screw-type bucket tooth adapter system according to claim 1, characterized in that: The supporting part has side protrusions on both opposite side walls located behind the opening of the first hole; the sleeve hole has side slots on both transverse side walls, and the first pin is inserted into the side slot from back to front; when the supporting part is fitted into the sleeve hole, the side protrusions are located behind the side slots and abut against the first pin.

3. The threaded screw-type bucket tooth adapter system according to claim 1, characterized in that: The adapter is recessed downward into the sleeve to form a stepped structure; the front end of the adapter is provided with a recessed groove that is recessed downward, the recessed groove extends backward to the sleeve to form a notch, and a second longitudinal hole is provided on the bottom wall of the recessed groove. The inner side of the top wall of the adapter hole is provided with a protrusion, the protrusion is provided with a top slot, the second pin lug is inserted into the top slot from back to front, and the protrusion extends backward to form a lug; When the adapter is fitted into the adapter hole, the protrusion is inserted into the recessed groove, and the lug is engaged with the notch.

4. The threaded screw-type bucket tooth adapter system according to claim 1, characterized in that: The diameter of the limiting head is larger than the diameter of the threaded post, and the diameter of the threaded post is larger than the diameter of the plug.

5. The threaded screw-type bucket tooth adapter system according to claim 4, characterized in that: An annular limiting part is provided between the limiting head and the threaded post. The diameter of the annular limiting part is larger than that of the threaded post but smaller than that of the limiting head, so that the first and second rotating pins are both coaxial annular stepped. A number of wavy protrusions are provided on one side of the annular limiting part. A number of recesses of the wavy protrusions form the limiting locking groove. The circumferential protrusion height of the wavy protrusions does not exceed the outer circumferential surface of the limiting head.

6. The threaded screw-type bucket tooth adapter system according to claim 1, characterized in that: The diameter of the plunger gradually decreases away from the limiting head to have an outer conical surface.

7. A threaded screw-on bucket tooth adapter system, characterized in that: It includes a tooth tip, a tooth base, an adapter located between the tooth tip and the tooth base, a first lug, a second lug, a first screw pin, and a second screw pin; Both the first and second pivot pins include a limiting head, a threaded post, and a plug post. A limiting locking groove is provided on one side of the limiting head. Both the first and second pin ears are provided with threaded holes and elastic latches located at the opening of the threaded holes. The front side of the tooth seat is provided with a bearing part, and the opposite side walls of the bearing part are provided with a first hole and a side protrusion located behind the opening of the first hole; the front side of the adapter is provided with an adapter part, and the rear side is provided with a sleeve part with a sleeve hole, and the first pin lug is fixed on the transverse inner wall of the sleeve hole. The transverse side walls of the socket are provided with side slots, and the first pin lug is inserted into the side slot from back to front; when the bearing part is fitted into the socket, the side boss is located on the rear side of the side slot and abuts against the first pin lug. The adapter is recessed downward into the sleeve to form a stepped structure; the front end of the adapter is provided with a recessed groove that is recessed downward, the recessed groove extends backward to the sleeve to form a notch, and a second longitudinal hole is provided on the bottom wall of the recessed groove. The tooth tip is provided with an adapter hole on its rear side that matches the adapter part. The top wall of the adapter hole is provided with a protrusion. The protrusion is provided with a top slot. The second pin lug is inserted into the top slot from back to front. The protrusion extends backward to form a lug. The bearing part is fitted into the sleeve hole, the first rotating pin passes laterally through the first through hole of the sleeve part and is screwed into the threaded hole of the first pin ear, and is locked by the elastic latch of the first pin ear, and the plug of the first rotating pin extends into and abuts against the first hole. The adapter is fitted into the adapter hole, the protrusion is inserted into the recessed groove, and the lug is engaged with the notch; the second rotary pin is screwed longitudinally through the tooth tip top wall into the threaded hole of the second pin lug and is engaged by the elastic locking of the second pin lug; the plug of the second rotary pin extends into and abuts against the second hole.

8. The threaded screw-type bucket tooth adapter system according to claim 7, characterized in that: The diameter of the limiting head is larger than the diameter of the threaded post, and the diameter of the threaded post is larger than the diameter of the plug post. The diameter of the plunger gradually decreases away from the limiting head to have an outer conical surface, and both the first hole and the second hole are conical holes; An annular limiting part is provided between the limiting head and the threaded post. The diameter of the annular limiting part is larger than that of the threaded post and smaller than that of the limiting head, so that the first rotating pin and the second rotating pin are both coaxial annular stepped. The limiting locking groove is provided on one side of the annular limiting part.

9. A threaded screw-on bucket tooth adapter system according to claim 8, characterized in that: The annular limiting part has several wavy protrusions on one side, and several recesses of the wavy protrusions form the limiting locking groove. The circumferential protrusion height of the wavy protrusions does not exceed the outer circumferential surface of the limiting head.

10. A threaded screw-on bucket tooth adapter system, characterized in that: Includes tooth tip, tooth seat, second lug, and second pivot pin; The second pivot pin includes a limiting head, a threaded post, and a plug post. The limiting head has a limiting locking groove on one side. The second pin lug has a threaded hole and an elastic latch located at the opening of the threaded hole. The tooth base is provided with an adapter on the front side, the adapter is provided with an adapter part on the front side, and a socket part with a socket hole on the rear side. The adapter portion is recessed downward to form a stepped structure with the rear section of the adapter; the front end of the adapter portion is provided with a recessed groove that is recessed downward, the recessed groove extends rearward to the sleeve portion to form a notch, and a second longitudinal hole is provided on the bottom wall of the recessed groove. The tooth tip is provided with an adapter hole on its rear side that matches the adapter part. The top wall of the adapter hole is provided with a protrusion. The protrusion is provided with a top slot. The second pin lug is inserted into the top slot from back to front. The protrusion extends backward to form a lug. The adapter is fitted into the adapter hole, the protrusion is inserted into the recessed groove, and the lug is engaged with the notch; the second rotary pin is screwed longitudinally through the tooth tip top wall into the threaded hole of the second pin lug and is engaged by the elastic locking of the second pin lug; the plug of the second rotary pin extends into and abuts against the second hole.

11. A threaded screw-on bucket tooth adapter system according to claim 10, characterized in that: The diameter of the limiting head is larger than the diameter of the threaded post, and the diameter of the threaded post is larger than the diameter of the plug post. The diameter of the plunger gradually decreases away from the limiting head to have an outer conical surface, and the second hole is a conical hole; An annular limiting part is provided between the limiting head and the threaded column. The diameter of the annular limiting part is larger than that of the threaded column and smaller than that of the limiting head, so that the first rotating pin and the second rotating pin are both coaxial annular stepped. The annular limiting part has several wavy protrusions on one side, and several recesses of the wavy protrusions form the limiting locking groove. The circumferential protrusion height of the wavy protrusions does not exceed the outer circumferential surface of the limiting head.

12. A threaded screw-on bucket tooth adapter system, characterized in that: Includes tooth tips, tooth bases, pin lugs, and screw pins; The pivot pin includes a limiting head, a threaded post, and a plug post. The limiting head has a limiting locking groove on one side. The pin lug has a threaded hole and an elastic locking buckle located at the opening of the threaded hole. The front side of the tooth base is provided with a bearing part, and the opposite side walls of the bearing part are provided with a first hole; the rear side of the tooth tip is provided with a sleeve part having a sleeve hole, and the opposite side walls of the bearing part are provided with a side boss located behind the opening of the first hole; the transverse side walls of the sleeve hole are provided with side slots, and the pin lug is inserted into the side slot from back to front. The bearing part is fitted into the socket hole, the side boss is located behind the side slot and abuts against the pin lug, the rotating pin passes laterally through the through hole of the socket part and is screwed into the threaded hole of the pin lug, and is locked by the elastic latch of the pin lug, and the plug of the rotating pin extends into and abuts against the first hole.

13. A threaded screw-on bucket tooth adapter system according to claim 12, characterized in that: The diameter of the limiting head is larger than the diameter of the threaded post, and the diameter of the threaded post is larger than the diameter of the plug post. The diameter of the plunger gradually decreases away from the limiting head to have an outer conical surface, and the first hole is a conical hole.

14. A threaded screw-on bucket tooth adapter system according to claim 13, characterized in that: An annular limiting part is provided between the limiting head and the threaded post. The diameter of the annular limiting part is larger than that of the threaded post and smaller than that of the limiting head, so that the rotating pin presents a coaxial annular stepped shape. The annular limiting part has several wavy protrusions on one side, and several recesses of the wavy protrusions form the limiting locking groove. The circumferential protrusion height of the wavy protrusions does not exceed the outer circumferential surface of the limiting head.

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