Attachment system and attachment method for wear-resistant part of excavating equipment

Abstract

The invention discloses an attachment system of a wear-resistant part of excavating equipment. At least one side of an attachment part of a bearing part is provided with a connecting convex part; a through locking hole and a side lug groove are formed in the cavity wall of at least one side of the attachment cavity; the rotary locking piece is provided with an external thread and an inner locking groove with an axial opening; the groove wall of each side lug groove is provided with a strip-shaped inserting groove and a protruding wall. The ear piece is provided with a strip-shaped convex rib and a concave wall; the strip-shaped inserting grooves are connected with the strip-shaped convex ribs in an inserted mode, the convex walls abut against the concave walls, and the locking holes and the threaded holes are communicated to form fastening channels. The rotary locking piece is screwed to a locking position in a threaded manner, the connecting convex part is embedded into the inner locking groove, the elastic lock catch is clamped with the locking clamping groove, and the wear-resistant part and the bearing part are fixed by the attachment assembly; the attachment system provides multiple fixing and strengthening guarantees; screw-thread fit has a self-locking function; the inner lock groove enables the connecting convex part to be embedded to achieve multi-degree-of-freedom limitation, the elastic lock catch provides radial tensioning force while preventing looseness in the circumferential direction, the side lug grooves are connected with the strip-shaped convex ribs in an inserted mode through the strip-shaped insertion grooves, and the connecting strength and durability are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of excavating equipment, and in particular to an attachment system for a wear-resistant component of an excavating equipment, in which the wear-resistant component is stably connected to a tooth bearing component. Background Art

[0002] The wear-resistant parts of the excavation equipment, which directly act on the excavated materials such as stones and soil at the front side, are connected to the load-bearing parts of the digging teeth through an attachment system.

[0003] Because wear-resistant parts face continuous impact with hard materials such as sand and gravel during operation, it is very important to ensure that the tooth tip is firmly installed on the tooth seat. Once these parts fall off due to loose fixation, it will bring extremely serious consequences.

[0004] The patent with the authorization announcement number CN217267764U discloses a locking pin assembly and an excavation tooth connection system that is easy to plug and unplug. In this system, the locking pin assembly includes a locking seat and a locking pin. During the installation process, the locking seat is first connected to one side of the tooth seat in a non-rotatable manner, and then the tooth seat is inserted into the cavity of the bucket tooth. Then, the locking pin is inserted into the locking pin through hole on one side of the bucket tooth and passes through the locking pin through hole on the other side. During this step, the locking protrusion enters the slide groove and can move forward and backward axially. After completing the above steps, the locking protrusion moves to the side of the locking groove, and the two ends of the locking pin are placed on the hole wall of the locking pin through hole. Finally, a rotational force is applied to the locking pin, and the locking protrusion is shifted into the locking groove. The positions of the locking seat and the locking pin are fixed, and the tooth seat and the bucket tooth are fixedly connected.

[0005] For large excavating teeth, the impact force and torque on the wear-resistant parts during operation are very large. In the technical solution of the above patent document, the connection is only achieved by the locking protrusion and the locking groove, and the structural stability is poor and it is easy to be damaged, thus affecting the fixing effect and service life of the excavating teeth. Summary of the invention

[0006] In view of the defects in the prior art, the technical problem to be solved by the present invention is to provide an attachment system and an attachment method for wear-resistant parts of an excavating device.

[0007] The technical solution adopted by the present invention to solve the above technical problems is: an attachment system for wear-resistant parts of excavating equipment, comprising a wear-resistant part, a bearing part and at least one set of attachment components; the wear-resistant part is provided with an attachment cavity with a rear opening; the front end of the bearing part is provided with an attachment part, and at least one side of the attachment part is provided with a connecting protrusion; The attachment assembly comprises an ear piece, a rotating lock piece and an elastic lock buckle; the elastic lock buckle is arranged on one side of the rotating lock piece; the rotating lock piece is provided with an external thread and an axially open inner lock groove, and the connecting protrusion matches the inner lock groove; the ear piece is provided with a threaded hole with an internal thread; the hole wall of the threaded hole is provided with a locking groove matching the elastic lock buckle; A locking hole is provided on at least one side of the cavity wall of the attachment cavity, and a side ear groove with a rear opening is provided on the inner side of the cavity wall; The side ear groove is recessed in the side cavity wall, the groove wall of the side ear groove is provided with a strip slot and a convex wall is formed beside the strip slot; the ear piece is provided with a strip convex rib corresponding to the strip slot and a concave wall is formed beside the strip convex rib; When the ear piece is inserted into the side ear groove, the strip-shaped slot is plugged into the strip-shaped convex rib, and the convex wall is in contact with the concave wall; the ear piece and the side ear groove cannot rotate in the circumferential direction, and the locking hole and the threaded hole are connected to form a fastening channel; The attachment portion extends into the attachment cavity, and the connecting protrusion is located at the end of the fastening channel; the rotating locking piece is screwed from the fastening channel and the threaded hole to a locking position, the connecting protrusion is engaged with the inner locking groove, the elastic locking buckle is clamped with the locking slot, and the attachment assembly fixes the wear-resistant component and the load-bearing component.

[0008] The preferred technical solution adopted by the present invention to solve the above-mentioned technical problems is: the connecting protrusion is a frustum structure with a diameter gradually expanding from the end surface inward, and the inner locking groove is a tapered hole with a diameter gradually decreasing from the groove mouth inward; when in the locking position, the inner end surface of the connecting protrusion is tightly against the bottom of the inner locking groove.

[0009] The preferred technical solution adopted by the present invention to solve the above technical problems is: a groove extending from the outer end surface to the threaded hole is provided on the inner side of the ear piece, and the inner notch of the groove faces the attachment cavity; the connecting protrusion is inserted from the outer end notch of the groove into the groove to the end of the fastening channel.

[0010] The preferred technical solution adopted by the present invention to solve the above technical problem is: the attachment portion is provided with a transverse hole, the connecting pin is inserted into the transverse hole and at least one end thereof exceeds the transverse hole to form an outwardly convex connecting protrusion.

[0011] The preferred technical solution adopted by the present invention to solve the above technical problem is: the ear piece has an inclined inner end surface, and the side ear groove has an inclined groove bottom matching the inclined inner end surface.

[0012] The preferred technical solution adopted by the present invention to solve the above-mentioned technical problems is: the elastic lock includes an elastic rubber block and a metal fastener partially embedded in the elastic rubber block; the metal fastener includes a plurality of outwardly protruding buckle portions, the buckle portions have an outwardly convex arc surface, and the locking slot includes a plurality of slots with an inwardly concave arc surface; a receiving groove is provided on the side of the rotating lock element, the elastic lock is located in the receiving groove, and the buckle portion protrudes from the side of the rotating lock element.

[0013] The preferred technical solution adopted by the present invention to solve the above technical problems is: the metal fastener includes two buckle parts spaced apart from each other, and the spacing between the two buckle parts is the span of one buckle part; the locking slot includes 5 slots distributed continuously in a wave shape.

[0014] The preferred technical solution adopted by the present invention to solve the above technical problem is: the rotary lock comprises a limit head and a threaded column, and the outer diameter of the limit head is larger than the inner diameter of the threaded hole; The width of the groove is greater than the outer diameter of the connecting protrusion and smaller than the inner diameter of the threaded hole; The locking slot is located on a side of the threaded hole close to the inner end surface of the ear piece.

[0015] The preferred technical solution adopted by the present invention to solve the above-mentioned technical problems is: connecting protrusions are provided on the opposite sides of the attachment part; the cavity walls on the opposite sides of the attachment cavity are provided with penetrating locking holes and the inner side of the cavity wall is provided with side ear grooves with rear openings; the wear-resistant part is sleeved on the attachment part of the bearing part and the two are fixed by two groups of attachment components located on the opposite sides.

[0016] The preferred technical solution adopted by the present invention to solve the above technical problem is: an attachment method of an attachment system of a wear-resistant component of an excavating equipment, comprising the following steps: Step A: the ear piece is inserted into the side ear groove of the wear-resistant component, the strip-shaped slot is plugged into the strip-shaped convex rib, the convex wall is abutted against the concave wall, and the locking hole is connected with the threaded hole to form a fastening channel; Step B: sleeve the wear-resistant component onto the attachment portion at the front end of the bearing component through the attachment cavity, wherein the connection protrusion of the attachment portion is located at the end of the fastening channel; Step C: screwing the rotating lock from the outside of the wear-resistant component through the fastening channel and the threaded hole; Step D: The connecting protrusion is engaged with the inner locking groove, the elastic lock buckle is clamped with the locking groove, and the attachment assembly fixes the wear-resistant component and the load-bearing component.

[0017] Compared with the prior art, the advantages of the present invention are that the attachment system provides multiple fixation reinforcement guarantees.

[0018] The rotary lock is attached and assembled by means of a threaded connection, so that the rotary lock and the ear piece form a tight thread fit and have a certain self-locking function, thereby ensuring the stability and safety of the connection.

[0019] When the rotary lock is rotated to the bottom, its inner lock groove tightly wraps and fits the connection convex part of the load-bearing component, which not only achieves radial fixation but also limits axial movement. At the same time, the rotation of the rotary lock is limited by the thread and the elastic lock, and the circumferential rotation of the connection convex part and the wear-resistant component is also effectively limited, thereby significantly improving the stability of the connection, allowing the connection structure to withstand greater loads and vibrations, and reducing the risk of failure caused by loose or damaged connections.

[0020] The elastic lock buckle is squeezed by the fastening channel and deformed. This deformation causes the elastic lock buckle to generate a tensioning force on the rotating lock element and the fastening channel in the radial direction, thereby enhancing the stability of the connection.

[0021] The side ear grooves of the ear pieces and the wear-resistant parts are plugged into the strip-shaped convex ribs through the strip-shaped slots, thereby improving the strength and durability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be used as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematically representing the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0023] Figure 1 A schematic diagram of an attachment system for wear-resistant components of an excavating device according to a preferred embodiment of the present invention; Figure 2 A cross-sectional view of an attachment system for a wear-resistant component of an excavating device according to a preferred embodiment of the present invention; Figure 3 A schematic diagram of a bearing component of a preferred embodiment of the present invention; Figure 4 An exploded view of a bearing component of a preferred embodiment of the present invention; Figure 5 A cross-sectional view of a load-bearing component of a preferred embodiment of the present invention; Figure 6 A schematic diagram of a wear-resistant component according to a preferred embodiment of the present invention; Figure 7 Schematic diagram of an earpiece according to a preferred embodiment of the present invention Figure 1 ; Figure 8 Schematic diagram of an earpiece according to a preferred embodiment of the present invention Figure 2 ; Fig. 9 The assembly state of the rotary lock and the elastic lock buckle of the preferred embodiment of the present invention is schematically shown. Figure 1 ; Fig.10 The assembly state of the rotary lock and the elastic lock buckle of the preferred embodiment of the present invention is schematically shown. Figure 2 ; Fig.11 It is a schematic diagram of the disassembled state of the rotary lock element and the elastic lock buckle in the preferred embodiment of the present invention; Fig.12 A cross-sectional view of the assembly state of the rotary lock element and the elastic lock buckle according to a preferred embodiment of the present invention; Fig.13 A schematic diagram of step A of the attachment method according to a preferred embodiment of the present invention; Fig.14 A schematic diagram of step B of the attachment method according to a preferred embodiment of the present invention; Fig.15 A schematic diagram of step C of the attachment method according to a preferred embodiment of the present invention; Fig.16 Schematic diagram of the ear piece and the rotating lock piece in step C of the attachment method according to a preferred embodiment of the present invention; Fig.17 Schematic diagram of the ear piece and the rotating lock piece in step D of the attachment method according to a preferred embodiment of the present invention; Fig.18 It is a schematic diagram of the structure of the bearing component in another scheme.

[0024] Reference numerals: Wear-resistant component 100; load-bearing component 200; attachment assembly 300; Attachment portion 201; coupling pin 400; connecting protrusion 1; ear piece 2; rotating lock piece 3; elastic lock buckle 4; Transverse hole S; attachment cavity K; side ear groove 11; strip slot a; convex wall b; strip convex rib c; concave wall d; Base plate 2a; U-shaped protrusion 2b; groove m; outer end notch j; threaded hole 21; Locking slot 22; Accommodating slot V; Slot H; Inner locking groove 33; limit head 31; threaded column 32; tool docking hole Y; Elastic rubber block 41; metal fastener 42; buckle portion G; inclined inner end surface R. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It will be appreciated by those skilled in the art that these descriptions are only illustrative and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0026] It should be noted that like reference numerals denote similar items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0027] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or the directions or positional relationships in which the invention product is usually placed when in use, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. "First" and "second" are only for the purpose of making the description easier to understand, without any other directional meaning, and cannot be used as a limitation on the present invention.

[0028] like Figure 1 , 6 As shown, this embodiment provides an attachment system for a wear-resistant component 100 of an excavating device, including a wear-resistant component 100 having an attachment cavity K with a rear opening, a bearing component 200 connected to the excavating device body, and an attachment assembly 300 for connecting the wear-resistant component 100 to the bearing component 200.

[0029] like Figure 2-5 As shown, the front end of the bearing member 200 is provided with an attachment portion 201, and the attachment portion 201 is provided with a transverse hole S. A connecting pin 400 is passed through the transverse hole S, and both ends of the connecting pin 400 exceed the transverse hole S to form a connecting protrusion 1 protruding from the side of the attachment portion 201.

[0030] like Figure 6-12 As shown, the attachment assembly 300 includes an ear piece 2, a rotating lock piece 3 and an elastic lock buckle 4. The lateral side walls of the attachment cavity K are provided with locking holes 12 penetrating therethrough, and the inner side of the cavity wall is provided with a side ear groove 11 with a rear opening. The side ear groove 11 is used to insert the ear piece 2. Specifically, the side ear groove 11 is recessed in the side cavity wall, and the groove wall of the side ear groove 11 is provided with a strip-shaped slot a and a convex wall b is formed beside the strip-shaped slot a. The ear piece 2 is provided with a strip-shaped convex rib c corresponding to the strip-shaped slot a and a concave wall d is formed beside the strip-shaped convex rib c.

[0031] like Figure 7-8 As shown, a threaded hole 21 with internal threads is provided on the ear piece 2. The threaded hole 21 is used to cooperate with the rotating lock piece 3, and a locking groove 22 is provided on one side of the hole wall of the threaded hole 21.

[0032] like Figure 9-12As shown, the rotary lock 3 includes a stopper head 31 and a threaded column 32. The outer diameter of the stopper head 31 is larger than the inner diameter of the threaded hole 21, and the threaded column 32 is provided with an external thread. An end of the rotary lock 3 away from the stopper head 31 is provided with an inner locking groove 33 with an axial opening. This inner locking groove 33 is used to match with the connecting protrusion 1, so as to fit the connecting protrusion 1. The elastic lock buckle 4 is provided on one side of the rotary lock 3. The elastic lock buckle 4 can be compressed along the radial direction of the rotary lock 3. The elastic lock buckle 4 matches with the locking groove 22 and enters or exits the locking groove 22 under the action of elasticity. Preferably, the end face of the stopper head 31 is provided with a tool docking hole Y for the operation of the screwing tool.

[0033] In this embodiment, if Figure 5 As shown, connecting protrusions 1 are provided on opposite sides of the attachment portion 201. The cavity walls on opposite sides of the attachment cavity K are provided with penetrating locking holes 12, and the inner side of the cavity wall is provided with side ear grooves 11 with rear openings. The wear-resistant component 100 is sleeved on the attachment portion 201 of the bearing component 200, and the two are fixed by two sets of attachment components 300 located on opposite sides.

[0034] Based on the above structural features, the attachment method of the attachment system includes the following steps: Step S: Figure 3-5 As shown, the coupling pin 400 is inserted into the transverse hole S of the bearing component 200 and forms a connecting protrusion 1 protruding outward from the side of the attachment portion 201 .

[0035] Step A: Fig.13 As shown, the ear piece 2 is inserted into the side ear groove 11 of the wear-resistant component 100, the strip slot a is plugged into the strip convex rib c, the convex wall b abuts against the concave wall d, the ear piece 2 and the side ear groove 11 cannot rotate circumferentially, and the locking hole 12 and the threaded hole 21 are relatively connected to form a fastening channel L for the rotating lock 3 to extend into.

[0036] Step B: Fig.14 As shown, the wear-resistant component 100 is sleeved on the attachment portion 201 at the front end of the bearing component 200 through the attachment cavity K, and the connection protrusion 1 of the attachment portion 201 is located at the end of the fastening channel.

[0037] Step C: Figure 15-16 As shown, the rotary lock 3 is screwed into the threaded hole 21 from the fastening channel on the outside of the wear-resistant component 100 .

[0038] Step D: Fig.17 As shown, the rotary lock 3 is screwed to the locking position, the connecting protrusion 1 is engaged with the inner locking groove 33, the elastic lock buckle 4 is clamped with the locking groove 22, and the attachment assembly 300 fixes the wear-resistant component 100 and the bearing component 200.

[0039] In the technical solution provided in this embodiment, the attachment system provides multiple fixation reinforcement guarantees.

[0040] The rotary lock 3 is attached and assembled by a threaded screw connection, so that the rotary lock 3 and the ear piece 2 form a tight threaded fit, which is difficult to easily withdraw from the fastening channel. The threaded screw connection achieves uniform distribution of connection points and uniform transmission of pressure through the tight fit of multiple threads. This connection method not only provides strong pulling force, but also provides sufficient torque bearing capacity, thereby ensuring the stability and safety of the connection. This connection method also has a certain self-locking function, so even in harsh working environments, such as vibration, impact, etc., even without applying additional locking force, the stability of the connection can be maintained to prevent the wear-resistant component 100 from falling off or being damaged.

[0041] When the rotary lock 3 is rotated to the bottom, its inner lock groove 33 tightly wraps and fits the connection protrusion 1 of the bearing component 200. This fitting connection not only achieves radial fixation through sleeve connection, but also limits axial movement through end face abutment. At the same time, since the connection protrusion 1 is completely wrapped by the rotary lock 3, and the rotation of the rotary lock 3 is limited by the thread and the elastic lock 4, the circumferential rotation of the connection protrusion 1 and the wear-resistant component 100 is also effectively limited, so that the connection point between the wear-resistant component 100 and the bearing component 200 is multi-fixed and strengthened, thereby significantly improving the stability of the connection, allowing the connection structure to withstand greater loads and vibrations, and reducing the risk of failure caused by loose or damaged connections.

[0042] When the rotating lock 3 is screwed and fastened with the threaded hole 21 of the wear-resistant component 100, the elastic lock buckle 4 is squeezed by the fastening channel and deformed. This deformation causes the elastic lock buckle 4 to generate a tensioning force on the rotating lock 3 and the fastening channel in the radial direction, thereby achieving a tight fit between the rotating lock 3 and the fastening channel. The tensioning effect of the elastic lock buckle 4 not only limits the rotation of the rotating lock 3 in the circumferential direction, but also enhances the stability of the connection through the radial tensioning force.

[0043] The side ear grooves 11 of the ear piece 2 and the wear-resistant component 100 are plugged into the strip-shaped slot a and the strip-shaped convex rib c, which increases the contact area between the ear piece 2 and the wear-resistant component 100 and improves the strength and durability of the connection; and the abutment between the convex wall b and the concave wall d further limits the movement of the ear piece 2, making the entire connection structure more stable. In addition, this concave-convex plug-in design can more effectively disperse and resist external forces when the wear-resistant component 100 is impacted or vibrated, thereby enhancing the overall impact resistance of the wear-resistant component 100 and helping to prevent the connection from loosening or damage due to long-term use or harsh working environment.

[0044] The design in this embodiment forms a connecting protrusion 1 through a connecting pin 400, which disperses the force to the connecting pin 400, thereby reducing the risk of stress concentration on the main body of the bearing component 200, making the connection more stable, and improving the reliability and safety of the connection.

[0045] In addition to the above five strengthening effects, in this embodiment, the strength and stability of the structure are improved by optimizing the material parameters based on the structure.

[0046] In this embodiment, the hardness of the rotating lock 3, the ear piece 2, and the connecting pin 400 is greater than the hardness of the attachment portion 201 of the bearing component 200, thereby improving the wear resistance between the components and resisting wear during the impact process. In this embodiment, the hardness of the wear-resistant component 100 is 50±2HRC, the hardness of the bearing component 200 is 40±2HRC, the impact value of the wear-resistant component 100 is greater than 20J, and the impact value of the bearing component 200 is greater than 40J.

[0047] like Figure 7-8 As shown, the earpiece 2 includes a base plate 2a and a U-shaped protrusion 2b inside the base plate 2a. The two sides of the base plate 2a exceed the U-shaped protrusion 2b to form a strip-shaped protrusion c, and the outer walls of the two sides of the U-shaped protrusion 2b form a concave wall d. The inner side of the earpiece 2 is provided with a groove m extending from the outer end surface to the threaded hole 21. This groove m is formed by the U-shaped protrusion 2b, and the inner notch of the groove m faces the attachment cavity K. The connecting protrusion 1 is inserted into the groove m from the outer end notch j of the groove m to the end of the fastening channel.

[0048] like Figure 7 As shown, the width of the groove m is greater than the outer diameter of the connecting protrusion 1 and smaller than the inner diameter of the threaded hole 21. The locking slot 22 is located on one side of the threaded hole 21 close to the inner end surface of the earpiece 2.

[0049] like Figure 5-9 As shown, the connecting protrusion 1 is a truncated cone structure with a diameter gradually expanding from the end surface inward, and the inner locking groove 33 is a tapered hole with a diameter gradually decreasing from the notch inward. When in the locked position, the inner end surface of the connecting protrusion 1 is tightly against the bottom of the inner locking groove 33. When the truncated cone-shaped connecting protrusion 1 and the tapered hole-shaped inner locking groove 33 are matched, since both of them have tapered features, a centering effect will naturally occur between them. This design allows the connecting protrusion 1 and the inner locking groove 33 to be automatically centered through the guidance of the cone during the assembly process, even if there is a certain initial deviation, to ensure the accuracy of the final connection. When they are tightly matched, the contact area will be relatively large.

[0050] This design not only improves the stability of the connection, but also enhances the bearing capacity of the connection. In the locked position, the inner end face of the connecting protrusion 1 is tightly against the bottom of the inner locking groove 33. Due to the guidance of the cone, the locking force will be evenly distributed along the cone surface, avoiding connection failure caused by local stress concentration. In addition, the design of the frustum and the tapered hole makes it easier for the connecting protrusion 1 to be tightly fitted with the inner locking groove 33 when subjected to external force, thereby effectively preventing the connection from loosening. This design is particularly important in working environments with large vibration or impact loads.

[0051] like Figure 2 , 16 As shown, the ear piece 2 has an inclined inner end face R, and the side ear groove 11 has an inclined groove bottom that matches the inclined inner end face. This contact mode not only increases the contact area, but also makes the contact more uniform, thereby improving the tightness and stability of the connection. During the assembly process, an automatic centering effect will occur between the ear piece 2 and the side ear groove 11. Even if there is a certain deviation in the initial position, the inclined surface will guide the ear piece 2 to gradually adjust to the correct position to ensure the accuracy of the final connection. This automatic centering effect helps to reduce assembly errors and improve the tightness of the connection.

[0052] like Figure 9-12 As shown, the elastic lock 4 includes an elastic rubber block 41 and a metal fastener 42 partially embedded in the elastic rubber block 41. The metal fastener 42 includes a plurality of convex buckle parts G, the buckle parts G have a convex arc surface, and the locking slot 22 includes a plurality of slots H with a concave arc surface.

[0053] The side of the rotary lock 3 is provided with a receiving groove V, the elastic lock buckle 4 is located in the receiving groove V, and the buckle G protrudes from the side of the rotary lock 3. As a part of the lock buckle, the elastic rubber block 41 has a certain elasticity and deformation ability. When the buckle G cooperates with the slot H, the elastic rubber block 41 can compensate for the small gap caused by manufacturing error or installation error, thereby ensuring a tight fit between the lock buckle and the slot. The convex arc surface of the metal buckle 42 forms a perfect match with the concave arc surface of the locking slot 22. This design not only increases the contact area, but also enables the lock buckle to evenly distribute pressure when subjected to force, avoiding the problem of excessive local stress. The arc surface matching also provides better guidance, allowing the buckle G to slide into the slot H more easily to achieve a tight lock.

[0054] like Figure 7-12 As shown, the metal fastener 42 includes two mutually spaced buckle parts G, and the spacing between the two buckle parts G is the span of one buckle part G. The locking card slot 22 includes five slots H that are continuously distributed in a wave shape. This layout allows the buckle parts G to be more evenly distributed on the locking card slot 22, thereby improving the stability of the lock. At the same time, the five slots H that are continuously distributed in a wave shape provide more locking options and increase the flexibility of the lock.

[0055] Further preferably, the receiving groove V is located at the junction of the limiting head 31 and the threaded column 32, and the locking groove 22 is located at the outer edge of the threaded hole 21. This avoids interference during the screwing process and achieves the final positioning.

[0056] It should be noted that in other embodiments, the transverse hole S may also be a blind hole, and only one end of the connecting pin 400 forms the connecting protrusion 1 after being inserted. The wear-resistant component 100 is also provided with a locking hole 12 and a side ear groove 11 only on one corresponding side, and the wear-resistant component 100 and the bearing component 200 are fixed only by a set of attachment components 300.

[0057] In addition, in other embodiments, Fig.18 As shown, the connecting protrusion 1 can also be integrally formed on the body of the bearing component 200. The connecting protrusions 1 are integrally formed on both sides of the attachment part, and the wear-resistant component 100 and the bearing component 200 are fixed by two sets of attachment components 300; or. The connecting protrusion 1 is integrally formed on only one side of the attachment part, and the wear-resistant component 100 and the bearing component 200 are fixed by one set of attachment components 300.

[0058] The above is an introduction to the attachment system and attachment method of the wear-resistant parts of an excavation equipment provided by the present invention. The principle and implementation method of the present invention are explained in this article using specific examples. The description of the above embodiments is only used to help understand the present invention and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. An attachment system for wear-resistant parts of excavating equipment, characterized in that: It comprises a wear-resistant component, a bearing component and at least one set of attachment components; the wear-resistant component is provided with an attachment cavity with a rear opening; the front end of the bearing component is provided with an attachment portion, and at least one side of the attachment portion is provided with a connecting protrusion; The attachment assembly comprises an ear piece, a rotating lock piece and an elastic lock buckle; the elastic lock buckle is arranged on one side of the rotating lock piece; the rotating lock piece is provided with an external thread and an axially open inner lock groove, and the connecting protrusion matches the inner lock groove; the ear piece is provided with a threaded hole with an internal thread; the hole wall of the threaded hole is provided with a locking groove matching the elastic lock buckle; At least one side cavity wall of the attachment cavity is provided with a penetrating locking hole, and a side ear groove with a rear opening is provided on the inner side of the side cavity wall; The side ear groove is recessed in the side cavity wall, the groove wall of the side ear groove is provided with a strip slot and a convex wall is formed beside the strip slot; the ear piece is provided with a strip convex rib corresponding to the strip slot and a concave wall is formed beside the strip convex rib; When the ear piece is inserted into the side ear groove, the strip-shaped slot is plugged into the strip-shaped convex rib, and the convex wall is in contact with the concave wall; the ear piece and the side ear groove cannot rotate in the circumferential direction, and the locking hole and the threaded hole are connected to form a fastening channel; The attachment portion extends into the attachment cavity, and the connecting protrusion is located at the end of the fastening channel; the rotating locking piece is screwed from the fastening channel and the threaded hole to a locking position, the connecting protrusion is engaged with the inner locking groove, the elastic locking buckle is clamped with the locking slot, and the attachment assembly fixes the wear-resistant component and the load-bearing component.

2. An attachment system for wear-resistant parts of excavating equipment according to claim 1, characterized in that: The connecting protrusion is a truncated cone structure with a diameter gradually expanding from the end surface inward, and the inner locking groove is a tapered hole with a diameter gradually decreasing from the groove mouth inward; when in the locking position, the inner end surface of the connecting protrusion is tightly against the bottom of the inner locking groove.

3. The attachment system for wear-resistant parts of excavating equipment according to claim 1, characterized in that: The inner side of the ear piece is provided with a groove extending from the outer end surface to the threaded hole, and the inner notch of the groove faces the attachment cavity; the connecting protrusion is inserted into the groove from the outer end notch of the groove to the end of the fastening channel.

4. The attachment system for wear parts of excavating equipment according to claim 1, characterized in that: The attachment portion is provided with a transverse hole, the connecting pin is inserted into the transverse hole and at least one end thereof exceeds the transverse hole to form an outwardly protruding connecting protrusion.

5. The attachment system for wear parts of excavating equipment according to claim 1, characterized in that: The ear piece has an inclined inner end surface, and the side ear groove has an inclined groove bottom matching the inclined inner end surface.

6. The attachment system for wear-resistant parts of excavating equipment according to claim 1, characterized in that: The elastic lock includes an elastic rubber block and a metal fastener partially embedded in the elastic rubber block; the metal fastener includes a plurality of outwardly protruding buckle portions, the buckle portions have an outwardly convex arc surface, and the locking slot includes a plurality of slots with an inwardly concave arc surface; a receiving groove is provided on the side of the rotating lock element, the elastic lock is located in the receiving groove, and the buckle portion protrudes from the side of the rotating lock element.

7. An attachment system for wear parts of excavating equipment according to claim 6, characterized in that: The metal fastener comprises two buckle parts spaced apart from each other, and the distance between the two buckle parts is the span of one buckle part; the locking slot comprises five slots distributed continuously in a wave shape.

8. An attachment system for wear parts of excavating equipment according to claim 3, characterized in that: The rotary lock comprises a limit head and a threaded column, wherein the outer diameter of the limit head is larger than the inner diameter of the threaded hole; The width of the groove is greater than the outer diameter of the connecting protrusion and smaller than the inner diameter of the threaded hole; The locking slot is located on a side of the threaded hole close to the inner end surface of the ear piece.

9. The attachment system for wear parts of excavating equipment according to claim 1, characterized in that: The attachment portion is provided with connecting protrusions on opposite sides; the cavity walls on opposite sides of the attachment cavity are provided with penetrating locking holes and the inner side of the cavity wall is provided with side ear grooves with rear openings; the wear-resistant component is sleeved on the attachment portion of the bearing component and the two are fixed by two sets of attachment components located on opposite sides.

10. An attachment method for an attachment system of a wear-resistant component of an excavating device according to any one of claims 1 to 9, characterized in that The steps include: Step A: the ear piece is inserted into the side ear groove of the wear-resistant component, the strip-shaped slot is plugged into the strip-shaped convex rib, the convex wall is abutted against the concave wall, and the locking hole is connected with the threaded hole to form a fastening channel; Step B: sleeve the wear-resistant component onto the attachment portion at the front end of the bearing component through the attachment cavity, wherein the connection protrusion of the attachment portion is located at the end of the fastening channel; Step C: screwing the rotating lock from the outside of the wear-resistant component through the fastening channel and the threaded hole; Step D: The connecting protrusion is engaged with the inner locking groove, the elastic lock buckle is clamped with the locking groove, and the attachment assembly fixes the wear-resistant component and the load-bearing component.

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