Locking mechanism, detachable excavator bucket assembly and excavator bucket device

Abstract

The utility model relates to a locking mechanism, detachable excavator bucket subassembly and excavator bucket device, the locking mechanism includes locking cylinder and tight fit locking hole, detachable excavator bucket subassembly includes cutting board, toothholder, toothholder locking piece, bucket tooth, bucket tooth locking piece, side shield plate and side shield plate locking piece, all parts are specifically set, and the detachable excavator bucket subassembly can be locked by the cutting board, the toothholder, toothholder locking piece, bucket tooth, bucket tooth locking piece, side shield plate and side shield plate locking piece. The detachable tight fit arrangement of the cutting board and the tooth holder, the cutting board and the side cover plate and the tooth holder and the bucket tooth is achieved, the maintenance and replacement efficiency of the excavator bucket device is improved, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of industrial machinery parts, specifically relating to a locking mechanism, a detachable bucket assembly, and a bucket device. Background Technology

[0002] Bucket attachments are common components in construction machinery. During operation, the bucket teeth of the bucket attachment experience significant collisions and friction with the material being excavated. Since bucket attachments typically handle heavy and high-strength materials, these collisions and frictions cause substantial impacts on the bucket teeth, resulting in rapid and severe wear and damage. Currently, the tooth holders in bucket attachments are welded to the cutter plate, and the bucket teeth are then connected to the tooth holders. However, if one or two teeth or tooth holders are damaged, the tooth holder must be cut off, a new tooth holder welded on, and new bucket teeth installed, resulting in substantial losses of manpower, materials, and financial resources.

[0003] Regarding the connection between the bucket teeth and the tooth holder, existing technologies also employ pin connections to achieve detachable connections. Chinese invention patent publication CN108222115A discloses an excavator bucket tooth that connects the teeth and tooth holder via pins. However, with this conventional pin connection, after a period of operation, slight wear occurs at the connection due to minor movements, causing instability in the bucket teeth, resulting in vertical or horizontal wobbling. This, in turn, reduces the bucket's working efficiency and intensifies wear. Therefore, developing a reliable, tightly fitted, detachable locking mechanism and bucket assembly has become an urgent technical problem to be solved. Utility Model Content

[0004] To address the aforementioned technical problems, the purpose of this utility model is to propose a detachable locking mechanism, a detachable bucket assembly, and a bucket device that enables a tight fit between the tooth holder and the blade, the side cover plate and the blade, and the bucket teeth and the tooth holder.

[0005] This is achieved through the following technical means:

[0006] A locking mechanism includes a locking column and a tight-fitting locking hole. The locking column includes an upper semi-cylinder, a rubber connector, and a lower semi-cylinder. The upper and lower semi-cylinders are two semi-cylinders with the same diameter and length formed by longitudinally cutting the same cylinder in the middle. The rubber connector is disposed between the upper and lower semi-cylinders and is fixedly connected to them.

[0007] The tight-fitting locking holes are provided in multiple ways, and the physical centerlines of the multiple tight-fitting locking holes coincide.

[0008] The overall diameter of the locking column in its natural state is D1, and the diameter of the tight-fitting locking hole is D2, satisfying D1≥D2.

[0009] Both the upper and lower semi-cylinders include a tail end and a beginning end, wherein the tail end is a semi-cylindrical structure and the beginning end is a semi-frustum structure.

[0010] The overall thickness of the rubber connector is T1, satisfying D1:T1=(2.6~3.5):(0.8~1.2).

[0011] Preferably, a plurality of protrusions are provided on the arc-shaped surface of the upper semi-cylinder, and the straight line formed between the tops of the plurality of protrusions is parallel to the physical axis of the locking column, and the plurality of protrusions are one or more combinations of hemispheres, arc-shaped blades or cones.

[0012] A groove is provided on the tight-fitting locking hole. The groove is used to accommodate the protrusion provided on the arc surface of the upper semi-cylinder. The depth of the groove is L1 and the height of the protrusion is H1, satisfying L1≥H1.

[0013] Preferably, the rubber connector is made of rubber, composite rubber or other elastic material, and the upper and lower semi-cylinders are made of steel or other rigid materials.

[0014] Preferably, the width of the rubber connector is smaller than the diameter of the upper or lower semi-cylinder, and the length of the rubber connector is smaller than the length of the upper or lower semi-cylinder.

[0015] A detachable bucket assembly includes a blade, a tooth holder, a tooth holder locking element, bucket teeth, a bucket tooth locking element, a side cover plate, and a side cover plate locking element.

[0016] The front edge of the blade body is provided with multiple tooth seat grooves, multiple side cover plate grooves, multiple tooth seat locking holes, and multiple side cover plate locking holes. The tooth seat grooves and side cover plate grooves are all arc-shaped grooves.

[0017] The locking holes of the toothed seat and the side cover plate are tight-fitting locking holes of the aforementioned locking mechanism.

[0018] The tooth holder includes a blade locking part and a tooth locking part. The blade locking part is used to lock with the blade. The blade locking part includes an upper plate part, a lower plate part, an arc-shaped protrusion part, and a first blade locking hole. The arc-shaped protrusion part is disposed between the upper plate part and the lower plate part. The arc-shaped protrusion part matches the arc-shaped groove shape of the tooth holder groove, so that the blade locking part of the tooth holder is engaged with the tooth holder groove through the arc-shaped protrusion part. The first blade locking hole is a tight-fit locking hole of the above-mentioned locking mechanism, and the first blade locking hole is disposed through the upper plate part and the lower plate part. The tooth locking part is used to lock with the tooth through a tooth locking member.

[0019] The toothed seat locking member is the locking column of the aforementioned locking mechanism, and the toothed seat locking member can sequentially pass through the first blade locking hole of the upper plate, the toothed seat locking hole, and the first blade locking hole of the lower plate.

[0020] The bucket tooth includes a tip and a locking connection part. The tip is the working part of the bucket tooth, and the locking connection part is a hollow structure. The locking connection part locks the bucket tooth and the tooth seat together through the bucket tooth locking member and the bucket tooth locking part of the tooth seat.

[0021] The side cover plate includes an upper wear-resistant plate, a lower wear-resistant plate, and a wear-resistant block. The wear-resistant block is disposed between the upper wear-resistant plate and the lower wear-resistant plate. The wear-resistant block includes an outer wear-resistant end and an inner arc-shaped protrusion. The arc-shaped protrusion matches the arc-shaped groove of the side cover plate groove, so that the side cover plate is snapped into the side cover plate groove through the arc-shaped protrusion. A second blade locking hole is provided on both the upper wear-resistant plate and the lower wear-resistant plate. The second blade locking hole is a tight-fit locking hole of the above-mentioned locking mechanism.

[0022] The side cover plate locking member is the locking column of the above-mentioned locking mechanism. The side cover plate locking member can sequentially pass through the second blade locking hole of the upper wear-resistant plate, the side cover plate locking hole, and the second blade locking hole of the lower wear-resistant plate.

[0023] Preferably, the bucket tooth locking part includes a conical part and a first bucket tooth locking hole. The structure of the conical part is compatible with the hollow structure of the locking connection part of the bucket tooth. The conical part is used to extend into and fill the hollow structure of the locking connection part. The first bucket tooth locking hole is opened through at the connection between the bucket tooth locking part and the blade locking part. The first bucket tooth locking hole is a tight-fit locking hole of the above-mentioned locking mechanism.

[0024] A second locking hole is provided on the upper and lower sidewalls of the locking connection part of the bucket tooth.

[0025] The bucket tooth locking member is the locking column of the above-mentioned locking mechanism, and the bucket tooth locking member can sequentially pass through the second bucket tooth locking hole, the first bucket tooth locking hole and the second bucket tooth locking hole opened on the upper side wall of the locking connection part.

[0026] Preferably, the bucket tooth locking component includes an upper crescent lock and a lower crescent lock.

[0027] The upper crescent-shaped lock includes an upper crescent-shaped arc portion, a U-shaped locking portion, and a bolt tightening component. The U-shaped locking portion includes a U-shaped opening and a U-shaped bottom end, with the bolt tightening component sandwiched in the middle of the U-shaped opening. The longitudinal section of the upper crescent-shaped arc portion is crescent-shaped, and the wider end of the crescent shape connects to the U-shaped bottom end of the U-shaped locking portion. The bolt tightening component includes a nut portion and a screw portion, with the screw portion penetrating the U-shaped opening. The diameter of the nut portion is greater than the narrowest part of the width of the U-shaped opening. The nut portion can be loosened or tightened on the screw portion, and when tightened, it can apply downward pressure to the U-shaped locking portion.

[0028] The lower crescent lock includes a lower crescent-shaped arc portion and an arc-shaped hook portion. The longitudinal section of the arc-shaped hook portion is crescent-shaped, and the longitudinal section of the lower crescent-shaped arc portion is crescent-shaped. The wider end of the crescent shape of the lower crescent-shaped arc portion is connected to the wider end of the crescent shape of the arc-shaped hook portion. The radius of the inner arc of the crescent shape of the arc-shaped hook portion is smaller than the radius of the inner arc of the crescent shape of the lower crescent-shaped arc portion.

[0029] The bucket tooth locking part includes a conical part and a double crescent-shaped receiving groove. The structure of the conical part is compatible with the hollow structure of the locking connection part of the bucket tooth. The conical part is used to extend into and fill the hollow structure of the locking connection part. The double crescent-shaped receiving groove is provided on the upper and / or lower side of the connection between the bucket tooth locking part and the blade locking part. The double crescent-shaped receiving groove is used to accommodate the bucket tooth locking component, and the bottom arc of the double crescent-shaped receiving groove is compatible with the outer arc of the lower crescent-shaped arc part. The bottom end of the screw part is connected to the bottom end of the double crescent-shaped receiving groove.

[0030] A crescent-shaped receiving groove is provided on the upper and / or lower sidewalls of the locking connection part of the bucket tooth. In the locked state, the arc-shaped hook of the lower crescent lock can abut against the inner sidewall of the lower crescent-shaped receiving groove.

[0031] Preferably, the tip of the bucket tooth is a solid multifaceted cone structure.

[0032] Preferably, the locking connection portion of the bucket tooth further includes a skirt structure, which is used to cover the outer edge of the locking portion of the bucket tooth housing the tooth seat.

[0033] Preferably, the detachable bucket assembly further includes a positioning block, which is disposed on the blade plate at the contact position between the blade plate locking part of the toothed seat and the blade plate.

[0034] A bucket device comprising the aforementioned detachable bucket assembly.

[0035] The ranges defined by "upper", "lower", "left", "right", "front", "rear", and "middle" in this utility model are relative positions in a specific state, not absolute positions, and do not limit the range of the device or components.

[0036] The technical advantages of this utility model are as follows:

[0037] 1. This utility model utilizes a locking column formed by combining elastic and rigid materials. The diameter of the locking column in its natural state is set to be equal to or slightly larger than the diameter of the tight-fitting locking hole, maintaining a difference of approximately 0-1.5 mm. When mating is required, the locking column is hammered into the tight-fitting locking hole. Due to the elasticity of the rubber connector, it is compressed by the upper and lower semi-cylinders during hammering, allowing it to engage in the tight-fitting locking. Furthermore, the elasticity of the rubber connector ensures that the locking column remains in an outward-expanding state within the tight-fitting locking hole, achieving a tight fit between the locking column and the locking hole. This enables detachable tight-fitting of the blade plate and tooth holder, the blade plate and side cover plate, and the tooth holder and bucket teeth. It significantly simplifies the replacement cycle when one or more bucket teeth are damaged or worn, eliminating the need to replace the tooth holder; only the bucket teeth need to be disassembled and replaced.

[0038] 2. This utility model enhances the stability of the connection between the tooth holder, side cover plate, and the blade plate by providing multiple tooth holder grooves and side cover plate grooves with arc-shaped grooves on the front edge of the blade plate body. Each arc-shaped groove engages with the arc-shaped protrusion of the tooth holder and the arc-shaped protrusion of the side cover plate, respectively. During processing, the blade plate is pre-machined with multiple tooth holder grooves and side cover plate grooves with arc-shaped grooves. The tooth holder grooves cooperate with the structure of the arc-shaped protrusion of the tooth holder, and the side cover plate grooves cooperate with the structure of the arc-shaped protrusion of the side cover plate, forming positional constraints in each direction. Combined with the expansionable locking post and the tight-fitting locking hole, and the positional constraints in another direction of the positioning block, the tooth holder and side cover plate can be firmly and detachably fixed to the blade plate with positional constraints in all directions and a tight fit. The tight fit significantly reduces wear between components. When minor wear occurs, continuous repair of the affected area can greatly extend its service life.

[0039] 3. In one preferred embodiment, the upper crescent lock and the lower crescent lock, which are two specific structures set at the top and bottom respectively, are combined with the lower crescent arc-shaped receiving groove of the bucket tooth and the double crescent receiving groove of the tooth seat to achieve a tight fit between the bucket tooth and the tooth seat through the crescent arc-shaped pressing lock. Moreover, this lock can be tightened in real time after loosening under various conditions, thereby realizing a detachable tight fit between the bucket tooth and the tooth seat. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the locking column of the locking mechanism of this utility model.

[0041] Figure 2 This is a cross-sectional structural diagram of the locking mechanism of this utility model.

[0042] Figure 3 This is an exploded view of a detachable bucket assembly according to one embodiment of the present invention.

[0043] Figure 4 This is an assembly diagram of a detachable bucket assembly according to one embodiment of the present invention.

[0044] Figure 5 This is a schematic diagram of the blade plate according to one embodiment of the present invention.

[0045] Figure 6 This is a three-dimensional structural diagram of the tooth holder according to one embodiment of the present invention.

[0046] Figure 7 This is a right-side structural schematic diagram of a toothed seat according to one embodiment of the present invention.

[0047] Figure 8 This is a front view structural diagram of a toothed seat according to one embodiment of the present invention.

[0048] Figure 9 This is a three-dimensional structural diagram of the bucket teeth according to one embodiment of the present invention.

[0049] Figure 10 This is a right-side structural schematic diagram of the bucket teeth according to one embodiment of the present invention.

[0050] Figure 11 This is a three-dimensional structural diagram of the side cover plate according to one embodiment of the present utility model.

[0051] Figure 12 This is a right-side structural schematic diagram of the side cover plate according to one embodiment of the present utility model.

[0052] Figure 13 This is an exploded view of another embodiment of the present invention, showing the tooth holder, the bucket tooth, and the bucket tooth locking component.

[0053] Figure 14 This is an assembly diagram of the tooth holder, bucket teeth, and bucket tooth locking component according to another embodiment of the present invention.

[0054] Figure 15 This is a three-dimensional structural diagram of the tooth holder according to another embodiment of the present invention.

[0055] Figure 16 This is a structural schematic diagram of the upper half-crescent lock side view of another embodiment of the present invention.

[0056] Figure 17 This is a structural schematic diagram of the upper half-crescent lock from an upward viewing angle, representing another embodiment of this utility model.

[0057] Figure 18 This is a three-dimensional structural diagram of the lower crescent-shaped locking side of another embodiment of the present invention.

[0058] Figure 19 This is a three-dimensional structural diagram of the bucket teeth according to another embodiment of the present invention.

[0059] in:

[0060] 001-Locking column; 011-Upper semi-cylinder; 012-Rubber connector; 013-Lower semi-cylinder; 014-Protrusion; 015-Tail end; 016-Starting end; 002-Tight-fit locking hole; 021-Groove;

[0061] 100-blade plate; 101-tooth seat groove; 102-side cover plate groove; 103-tooth seat locking hole; 104-side cover plate locking hole; 105-front edge of the body;

[0062] 200-Gear seat; 201-Blade plate locking part; 211-Upper plate part; 212-Lower plate part; 213-Arc-shaped protrusion part; 214-First blade plate locking hole; 202-Bucket tooth locking part; 221-Conical part; 222-First bucket tooth locking hole; 223-Double crescent receiving groove;

[0063] 300-tooth seat locking element;

[0064] 400-Bucket tooth; 401-Tip; 402-Locking connection part; 421-Second bucket tooth locking hole; 422-Lower crescent-shaped section receiving groove; 423-Skirt structure;

[0065] 500 - Bucket tooth locking component; 501 - Upper crescent lock; 511 - Upper crescent arc-shaped part; 512 - U-shaped locking part; 513 - Bolt tightening component; 5131 - Nut part; 5132 - Screw part; 502 - Lower crescent lock; 521 - Lower crescent arc-shaped part; 522 - Arc-shaped hook part;

[0066] 600-Side cover plate; 601-Upper wear-resistant plate; 602-Lower wear-resistant plate; 621-Second blade locking hole; 603-Wear-resistant block; 631-Wear-resistant end; 632-Arc-shaped protrusion;

[0067] 700-Side cover plate locking component;

[0068] 800-Location Block. Detailed Implementation

[0069] The technological solution of this utility model is further described below with reference to embodiments and accompanying drawings. Unless otherwise specified, each feature is merely one example of a series of equivalent or similar features. These embodiments are merely for the purpose of aiding understanding of this utility model, and those skilled in the art should understand that they are only intended to help in understanding this utility model and should not be considered as specific limitations on this utility model.

[0070] Example 1

[0071] like Figure 1 and Figure 2 The locking mechanism shown includes a locking pin 001 and a tight-fitting locking hole 002, as follows: Figure 1 The locking column 001 shown includes an upper semi-cylinder 011, a rubber connector 012, and a lower semi-cylinder 013. The upper semi-cylinder 011 and the lower semi-cylinder 013 are two semi-cylinders with the same diameter and length formed by longitudinally cutting the same cylinder in the middle. The rubber connector 012 is disposed between the upper semi-cylinder 011 and the lower semi-cylinder 013 and is fixedly connected to the upper semi-cylinder 011 and the lower semi-cylinder 013.

[0072] In practical applications, each locking mechanism needs to have multiple tight-fitting locking holes 002 coaxially arranged, and the physical axis of the multiple tight-fitting locking holes 002 coincides.

[0073] The overall diameter of the locking column 001 in its natural state is D1 (the overall diameter of the center part of the locking column 001), and the diameter of the tight-fitting locking hole 002 is D2, satisfying D1≥D2. In its natural state, the diameter of the locking column 001 is slightly larger than the diameter of the tight-fit locking hole 002, with the difference between the two generally maintained between 0.08 and 1.5 mm. When the two need to be fitted together, the locking column 001 is hammered into the tight-fit locking hole 002. Due to the elasticity of the rubber connector 012 of the locking column 001, the rubber connector 012 is compressed by the upper semi-cylinder 011 and the lower semi-cylinder 013 during the hammering process, thus allowing it to enter the tight-fit locking. At the same time, due to the elastic properties of the rubber connector 012, the locking column 001, once inside the tight-fit locking hole 002, is always in an outward-expanding state, thereby achieving a tight fit between the locking column 001 and the tight-fit locking hole 002.

[0074] like Figure 1 As shown, both the upper semi-cylinder 011 and the lower semi-cylinder 013 include a tail end 015 and a starting end 016. The tail end 015 is a semi-cylindrical structure, and the starting end 016 is a semi-frustum structure. The starting end 016 is used to insert into the tight-fit locking hole 002, and the tail end 015 is used to knock the entire locking cylinder 001 into the tight-fit locking hole 002 by tapping.

[0075] The overall thickness of the rubber connector 012 is T1, which satisfies D1:T1=(2.6~3.5):(0.8~1.2). For example, D1 is 3.2 times T1. This setting allows the compression of the rubber connector to more significantly form outward expansion pressure within the tight-fitting locking hole 002.

[0076] like Figure 1 and Figure 2 As shown, a plurality of protrusions 014 are provided on the arc-shaped surface of the upper semi-cylinder 011. The straight line formed between the tops of the plurality of protrusions 014 is parallel to the physical axis of the locking column 001, and the plurality of protrusions 014 are one or more combinations of hemispheres, arc-shaped blades or cones.

[0077] like Figure 2 As shown, a groove 021 is provided on the tight-fitting locking hole 002. The groove 021 is used to accommodate the protrusion 014 provided on the arc-shaped surface of the upper semi-cylinder 011. The depth of the groove 021 is L1, and the height of the protrusion 014 is H1, satisfying L1≥H1. That is, it ensures that the groove 021 can completely accommodate the protrusion 014, so that the groove 021 can ensure that the locking cylinder 001 does not rotate within the tight-fitting locking hole 002 by accommodating the protrusion 014.

[0078] In an optional embodiment, the rubber connector 012 may be made of rubber, composite rubber or other elastic materials. In an optional embodiment, the upper semi-cylinder 011 and the lower semi-cylinder 013 may be made of steel (e.g., stainless steel, wear-resistant steel, etc.) or other rigid materials.

[0079] In alternative implementations, such as Figure 1 and Figure 2 As shown, the width of the rubber connector 012 is smaller than the diameter of the upper semi-cylinder 011 or the lower semi-cylinder 013, and the length of the rubber connector 012 is smaller than the length of the upper semi-cylinder 011 or the lower semi-cylinder 013. This arrangement allows the extruded portion of the rubber connector 012 to have additional accommodating areas during the compression and tight fit process.

[0080] Example 2

[0081] like Figures 3 to 12 As shown, this embodiment illustrates a detachable bucket assembly employing the locking mechanism of Embodiment 1, such as... Figure 3 and Figure 4 As shown, the detachable bucket assembly of this embodiment includes a blade 100, a tooth holder 200, a tooth holder locking member 300, bucket teeth 400, bucket teeth locking member 500, a side cover plate 600, and a side cover plate locking member 700.

[0082] As an example, such as Figure 5 As shown, the leading edge 105 of the blade 100 body is provided with a plurality of toothed grooves 101 (e.g. Figure 5 The diagram shows 5 of them), and multiple side cover plates 600 grooves 102 (e.g. Figure 5 The diagram shows four locking holes 103 (e.g., multiple toothed locking holes). Figure 5 (5 are shown) and multiple side cover plate 600 locking holes 104 (e.g.) Figure 5 (As shown in the image, there are 5), such as Figure 5 As shown, both the tooth seat groove 101 and the side cover plate 600 groove 102 are arc-shaped grooves.

[0083] The locking hole 103 of the tooth seat and the locking hole 104 of the side cover plate 600 are the tight-fit locking holes 002 of the locking mechanism described in Embodiment 1.

[0084] As an example, such as Figure 6 , Figure 7 and Figure 8As shown, the tooth holder 200 includes a blade locking part 201 and a tooth locking part 202. The blade locking part 201 is used to lock with the blade 100. The blade locking part 201 includes an upper plate part 211, a lower plate part 212, an arc-shaped protrusion part 213, and a first blade locking hole 214. The arc-shaped protrusion part 213 is disposed between the upper plate part 211 and the lower plate part 212. The arc-shaped protrusion and the tooth holder groove 101 are intersected by an arc-shaped protrusion. The shape of the groove matches, so that the blade locking part 201 of the tooth seat 200 is engaged with the tooth seat groove 101 through the arc-shaped protrusion part 213. The first blade locking hole 214 is the tight-fit locking hole 002 of the locking mechanism described in Embodiment 1. The first blade locking hole 214 is disposed through the upper plate part 211 and the lower plate part 212. The tooth locking part 202 is used to lock with the tooth 400 through the tooth locking member 500.

[0085] like Figure 3 As shown, the tooth seat locking member 300 is the locking column 001 of the locking mechanism described in Embodiment 1. The tooth seat locking member 300 can sequentially pass through the first blade locking hole 214 of the upper plate 211, the tooth seat locking hole, and the first blade locking hole 214 of the lower plate 212.

[0086] As an example, such as Figure 9 and Figure 10 As shown, the bucket tooth 400 includes a tip 401 and a locking connection part 402. The tip 401 is the working part of the bucket tooth 400 (i.e., the part that comes into contact with the material to be excavated by the bucket device). The locking connection part 402 is a hollow structure. The locking connection part 402 locks the bucket tooth and the tooth seat together through the bucket tooth locking member 500 and the bucket tooth locking part 202 of the tooth seat 200.

[0087] As an example, such as Figure 11 and Figure 12 As shown, the side cover plate 600 includes an upper wear-resistant plate 601, a lower wear-resistant plate 602, and a wear-resistant block 603. The wear-resistant block 603 is disposed between the upper wear-resistant plate 601 and the lower wear-resistant plate 602. The wear-resistant block 603 includes an outer wear-resistant end 631 and an inner arc-shaped protrusion 632. The arc-shaped protrusion 632 matches the arc-shaped groove shape of the side cover plate 600 groove 102, so that the side cover plate 600 is snapped into the side cover plate 600 groove 102 through the arc-shaped protrusion 632. A second blade locking hole 621 is provided on both the upper wear-resistant plate 601 and the lower wear-resistant plate 602. The second blade locking hole 621 is the tight-fit locking hole 002 of the locking mechanism described in Embodiment 1.

[0088] The side cover plate locking member 700 is the locking column 001 of the locking mechanism described in Embodiment 1. The side cover plate locking member 700 can sequentially pass through the second blade locking hole 621 of the upper wear-resistant plate 601, the locking hole 104 of the side cover plate 600, and the second blade locking hole 621 of the lower wear-resistant plate 602.

[0089] In this embodiment, as Figure 3 and Figure 4 As shown, the bucket tooth locking part 202 includes a conical part 221 and a first bucket tooth locking hole 222. The structure of the conical part 221 is matched with the hollow structure of the locking connection part 402 of the bucket tooth. The conical part 221 is used to extend into and fill the hollow structure of the locking connection part 402. The first bucket tooth locking hole 222 is opened through at the connection between the bucket tooth locking part 202 and the blade locking part 201. The first bucket tooth locking hole 222 is also the tight-fit locking hole 002 of the locking mechanism described in Embodiment 1.

[0090] As an example, such as Figure 9 and Figure 10 As shown, a second bucket tooth locking hole 421 is provided on the upper and lower side walls of the locking connection part 402 of the bucket tooth.

[0091] In this embodiment, as Figure 3 and Figure 4 As shown, the bucket tooth locking member 500 is the locking column 001 of the locking mechanism described in Embodiment 1, and the bucket tooth locking member 500 can sequentially pass through the second bucket tooth locking hole 421, the first bucket tooth locking hole 222 and the second bucket tooth locking hole 421 opened on the upper side wall of the locking connection part 402.

[0092] like Figure 9 As shown, the tip 401 of the bucket tooth is a solid multifaceted cone structure.

[0093] like Figure 3 and Figure 4 As shown, the detachable bucket assembly also includes a positioning block 800, which is disposed at the junction of the blade locking part 201 of the tooth seat 200 and the blade 100.

[0094] In a preferred embodiment, such as Figure 3 and Figure 4 As shown, the lengths of the tooth seat locking member 300 and the side cover plate locking member 700 are less than the length of the bucket tooth locking member 500.

[0095] Example 3

[0096] like Figures 13 to 19As shown, this embodiment illustrates another detachable bucket assembly using the locking mechanism of Embodiment 1, which differs from Embodiment 2 in that the connection method between the bucket teeth and the tooth seat 200 is different.

[0097] Specifically, such as Figure 13 and Figure 14 As shown, the bucket tooth locking component 500 includes an upper crescent lock 501 and a lower crescent lock 502.

[0098] like Figure 16 and Figure 17 As shown, the upper crescent lock 501 includes an upper crescent-shaped arc portion 511, a U-shaped locking portion 512, and a bolt tightening member 513. The U-shaped locking portion 512 includes a U-shaped opening and a U-shaped bottom end, with the bolt tightening member 513 sandwiched in the middle of the U-shaped opening. The longitudinal section of the upper crescent-shaped arc portion 511 is crescent-shaped, and the wider end of the crescent shape connects to the U-shaped bottom end of the U-shaped locking portion 512. The bolt tightening member 513 includes a nut portion 5131 and a screw portion 5132. The screw portion 5132 passes through the U-shaped opening. The diameter of the nut portion 5131 is larger than the narrowest part of the width of the U-shaped opening. The nut portion 5131 can be loosened or tightened on the screw portion 5132, and when tightened, it can apply downward pressure to the U-shaped locking portion 512, and when loosened, it can apply upward pressure to the U-shaped locking portion 512.

[0099] like Figure 18 As shown, the lower crescent lock 502 includes a lower crescent-shaped arc portion 521 and an arc-shaped hook portion 522. The longitudinal section of the arc-shaped hook portion 522 is crescent-shaped, and the longitudinal section of the lower crescent-shaped arc portion 521 is crescent-shaped. The wider end of the crescent shape of the lower crescent-shaped arc portion 521 is connected to the wider end of the crescent shape of the arc-shaped hook portion 522. The radius of the inner arc of the crescent shape of the arc-shaped hook portion 522 is smaller than the radius of the inner arc of the crescent shape of the lower crescent-shaped arc portion 521.

[0100] like Figure 15 As shown, the bucket tooth locking part 202 includes a conical part 221 and a double crescent-shaped receiving groove 223. The structure of the conical part 221 is matched with the hollow structure of the locking connection part 402 of the bucket tooth. The conical part 221 is used to extend into and fill the hollow structure of the locking connection part 402. The double crescent-shaped receiving groove 223 is respectively provided on the upper and lower sides of the connection between the bucket tooth locking part 202 and the blade locking part 201. The double crescent-shaped receiving groove 223 is used to accommodate the bucket tooth locking member 500, and the bottom arc of the double crescent-shaped receiving groove 223 matches the outer arc of the lower crescent-shaped arc part 521. The bottom end of the screw part 5132 is connected to the bottom end of the double crescent-shaped receiving groove 223.

[0101] like Figure 19 As shown, a lower crescent-shaped accommodating groove 422 is provided on the upper and lower side walls of the locking connection part 402 of the bucket tooth. In the locked state, the arc-shaped hook part 522 of the lower crescent lock 502 can abut against the inner side wall of the lower crescent-shaped accommodating groove 422.

[0102] The specific locking process in the above embodiments is as follows:

[0103] In Embodiment 2, the tooth holder is snapped onto the blade plate via the tooth holder groove. Then, the first blade plate locking hole is aligned with the tooth holder locking hole, and the tooth holder locking member is hammered into both the first blade plate locking hole and the tooth holder locking hole to lock the tooth holder to the blade plate. The arc-shaped protrusion at the inner end of the wear-resistant block of the side cover plate is snapped onto the groove of the side cover plate of the blade plate. The second blade plate locking holes, which are oppositely formed on both the upper and lower wear-resistant plates, are aligned with the side cover plate locking holes, and the side cover plate locking member is hammered into both the second blade plate locking holes and the side cover plate locking hole to lock the side cover plate to the blade plate. Then, the locking connection part of the bucket tooth is snapped onto the bucket tooth locking part of the tooth holder, and the first bucket tooth locking hole of the tooth holder is aligned with the second bucket tooth locking hole of the bucket tooth. Finally, the bucket tooth locking member is hammered into both the first bucket tooth locking hole and the second bucket tooth locking hole of the bucket tooth to complete the tight fit and locking of the bucket tooth and the tooth holder. During disassembly, simply continue to tap the locking pins of each locking component in the same direction using other cylindrical tools until they are knocked out.

[0104] In embodiment 3, the tooth holder is attached to the blade plate via the tooth holder groove. Then, after aligning the first blade plate locking hole with the tooth holder locking hole, the tooth holder locking member is hammered into the first blade plate locking hole and the tooth holder locking hole to complete the locking of the tooth holder and the blade plate. The arc-shaped protrusion at the inner end of the wear-resistant block of the side cover plate is attached to the groove of the side cover plate of the blade plate. After aligning the second blade plate locking holes, which are opened opposite each other on the upper and lower wear-resistant plates, with the side cover plate locking holes, the side cover plate locking member is hammered into the second blade plate locking holes and the side cover plate locking holes to complete the locking of the side cover plate and the blade plate. First, engage the locking connection of the bucket tooth with the locking part of the bucket tooth on the tooth holder. Then, insert both the upper and lower crescent locks into the double crescent receiving groove. Tighten the bolts and tightening parts, pressing the U-shaped locking part downwards. This allows the crescent-shaped arc-shaped part to penetrate between the lower crescent lock and the lower crescent arc-shaped receiving groove of the bucket tooth. Next, press the arc-shaped hook of the lower crescent lock upwards, causing it to abut against the inner wall of the lower crescent arc-shaped receiving groove of the bucket tooth, completing the tight fit between the bucket tooth and the tooth holder. Figure 14As shown, in the locked state, the inner arc of the upper crescent-shaped portion is in tight contact with the upper or lower sidewall of the locking connection part of the bucket tooth; the outer arc of the upper crescent-shaped portion is in tight contact with the inner arc of the lower crescent-shaped portion of the lower crescent lock; and the outer arc of the lower crescent-shaped portion of the lower crescent lock is in tight contact with the bottom arc of the double crescent-shaped receiving groove. For disassembly, simply loosen the bolt tightening piece to separate the upper and lower crescent locks, and then the bucket tooth can be removed.

[0105] After the detachable bucket assembly is locked and installed, it is welded to the bucket body of the bucket device through the rear edge of the cutter body, thus completing the installation.

[0106] The technologies known in the art involved in this utility model have not been described in detail. The above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A locking mechanism, characterized in that, It includes a locking column (001) and a tight-fitting locking hole (002). The locking column (001) includes an upper semi-cylinder (011), a rubber connector (012), and a lower semi-cylinder (013). The upper semi-cylinder (011) and the lower semi-cylinder (013) are two semi-cylinders with the same diameter and length formed by longitudinally cutting the same cylinder in the middle. The rubber connector (012) is disposed between the upper semi-cylinder (011) and the lower semi-cylinder (013) and is fixedly connected to the upper semi-cylinder (011) and the lower semi-cylinder (013). The tight-fit locking hole (002) is provided in multiple ways, and the physical centerlines of the multiple tight-fit locking holes (002) coincide. The overall diameter of the locking column (001) in its natural state is D1, and the diameter of the tight-fitting locking hole (002) is D2, satisfying D1≥D2.

2. The locking mechanism according to claim 1, characterized in that, Multiple protrusions (014) are provided on the arc-shaped surface of the upper semi-cylinder (011). The straight line formed between the tops of the multiple protrusions (014) is parallel to the physical axis of the locking column (001). The multiple protrusions (014) are one or more combinations of hemispheres, arc-shaped blades, or cones. A groove (021) is provided on the tight-fitting locking hole (002). The groove (021) is used to accommodate the protrusion (014) provided on the arc surface of the upper semi-cylinder (011). The depth of the groove (021) is L1, and the height of the protrusion (014) is H1, satisfying L1≥H1.

3. The locking mechanism according to claim 1, characterized in that, The rubber connector (012) is made of rubber or composite rubber, and the upper semi-cylinder (011) and lower semi-cylinder (013) are made of steel.

4. The locking mechanism according to claim 1, characterized in that, The width of the rubber connector (012) is less than the diameter of the upper semi-cylinder (011) or the lower semi-cylinder (013), and the length of the rubber connector (012) is less than the length of the upper semi-cylinder (011) or the lower semi-cylinder (013).

5. A detachable bucket assembly, characterized in that, It includes a blade (100), a tooth holder (200), a tooth holder locking component (300), bucket teeth (400), bucket teeth locking component (500), a side cover plate (600), and a side cover plate locking component (700); The front edge (105) of the blade (100) is provided with a plurality of tooth seat grooves (101), a plurality of side cover plate grooves (102), a plurality of tooth seat locking holes (103) and a plurality of side cover plate locking holes (104), wherein the tooth seat grooves (101) and the side cover plate grooves (102) are both arc-shaped grooves. The tooth seat locking hole (103) and the side cover plate locking hole (104) are tight-fit locking holes (002) of the locking mechanism according to any one of claims 1 to 4; The tooth holder (200) includes a blade locking part (201) and a tooth locking part (202). The blade locking part (201) is used to lock with the blade (100). The blade locking part (201) includes an upper plate part (211), a lower plate part (212), an arc-shaped protrusion part (213), and a first blade locking hole (214). The arc-shaped protrusion part (213) is disposed between the upper plate part (211) and the lower plate part (212). The arc-shaped protrusion and the arc-shaped groove of the tooth holder groove (101) are connected. The shapes are matched so that the blade locking part (201) of the tooth seat (200) is engaged with the tooth seat groove (101) through the arc-shaped protrusion part (213). The first blade locking hole (214) is a tight-fit locking hole (002) of the locking mechanism according to any one of claims 1 to 4. The first blade locking hole (214) is provided through the upper plate part (211) and the lower plate part (212). The bucket tooth locking part (202) is used to lock with the bucket tooth (400) through the bucket tooth locking member (500). The tooth seat locking member (300) is the locking column (001) of the locking mechanism according to any one of claims 1 to 4. The tooth seat locking member (300) can sequentially pass through the first blade locking hole (214) of the upper plate (211), the tooth seat locking hole and the first blade locking hole (214) of the lower plate (212). The bucket tooth (400) includes a tip (401) and a locking connection part (402). The tip (401) is the working part of the bucket tooth (400). The locking connection part (402) is a hollow structure. The locking connection part (402) locks the bucket tooth (400) and the tooth seat (200) together through the bucket tooth locking member (500) and the bucket tooth locking part (202) of the tooth seat (200). The side cover plate (600) includes an upper wear-resistant plate (601), a lower wear-resistant plate (602), and a wear-resistant block (603). The wear-resistant block (603) is disposed between the upper wear-resistant plate (601) and the lower wear-resistant plate (602). The wear-resistant block (603) includes an outer wear-resistant end (631) and an inner arc-shaped protrusion (632). The arc-shaped protrusion (632) matches the arc-shaped groove shape of the side cover plate groove (102), so that the side cover plate (600) is snapped into the side cover plate groove (102) through the arc-shaped protrusion (632). A second blade locking hole (621) is provided on both the upper wear-resistant plate (601) and the lower wear-resistant plate (602). The second blade locking hole (621) is a tight-fit locking hole (002) of the locking mechanism according to any one of claims 1 to 4. The side cover plate locking member (700) is the locking column (001) of the locking mechanism according to any one of claims 1 to 4. The side cover plate locking member (700) can sequentially pass through the second blade locking hole (621) of the upper wear-resistant plate (601), the side cover plate locking hole (104) and the second blade locking hole (621) of the lower wear-resistant plate (602).

6. The detachable bucket assembly according to claim 5, characterized in that, The bucket tooth locking part (202) includes a conical part (221) and a first bucket tooth locking hole (222). The structure of the conical part (221) is compatible with the hollow structure of the locking connection part (402) of the bucket tooth (400). The conical part (221) is used to extend into and fill the hollow structure of the locking connection part (402). The first bucket tooth locking hole (222) is opened through at the connection between the bucket tooth locking part (202) and the blade locking part (201). The first bucket tooth locking hole (222) is the tight-fit locking hole (002) of the locking mechanism according to any one of claims 1 to 4. A second bucket tooth locking hole (421) is provided on the upper and lower side walls of the locking connection part (402) of the bucket tooth (400); The bucket tooth locking member (500) is the locking column (001) of the locking mechanism according to any one of claims 1 to 4, and the bucket tooth locking member (500) can sequentially penetrate the second bucket tooth locking hole (421), the first bucket tooth locking hole (222) opened on the upper side wall of the locking connection part (402) and the second bucket tooth locking hole (421) opened on the lower side wall of the locking connection part (402).

7. The detachable bucket assembly according to claim 5, characterized in that, The bucket tooth locking component (500) includes an upper crescent lock (501) and a lower crescent lock (502); The upper crescent lock (501) includes an upper crescent arc-shaped part (511), a U-shaped locking part (512), and a bolt tightening member. The U-shaped locking part (512) includes a U-shaped opening and a U-shaped bottom end, with the bolt tightening member sandwiched in the middle of the U-shaped opening. The longitudinal section of the upper crescent arc-shaped part (511) is crescent-shaped, and the wider end of the crescent shape is connected to the U-shaped bottom end of the U-shaped locking part (512). The bolt tightening member includes a nut part (5131) and a screw part (5132). The screw part (5132) passes through the U-shaped opening. The diameter of the nut part (5131) is larger than the narrowest part of the width of the U-shaped opening. The nut part (5131) can be loosened or tightened on the screw part (5132), and when tightened, it can apply downward pressure to the U-shaped locking part (512). The lower crescent lock (502) includes a lower crescent arc-shaped part (521) and an arc-shaped hook part (522). The longitudinal section of the arc-shaped hook part (522) is crescent-shaped, and the longitudinal section of the lower crescent arc-shaped part (521) is crescent-shaped. The wider end of the crescent shape of the lower crescent arc-shaped part (521) is connected to the wider end of the crescent shape of the arc-shaped hook part (522). The radius of the inner arc of the crescent shape of the arc-shaped hook part (522) is smaller than the radius of the inner arc of the crescent shape of the lower crescent arc-shaped part (521). The bucket tooth locking part (202) includes a conical part (221) and a double crescent-shaped receiving groove (223). The structure of the conical part (221) is compatible with the hollow structure of the locking connection part (402) of the bucket tooth (400). The conical part (221) is used to extend into and fill the hollow structure of the locking connection part (402). The double crescent-shaped receiving groove (223) is provided on the upper and / or lower side of the connection between the bucket tooth locking part (202) and the blade locking part (201). The double crescent-shaped receiving groove (223) is used to accommodate the bucket tooth locking member (500), and the bottom arc of the double crescent-shaped receiving groove (223) is compatible with the outer arc of the lower crescent-shaped arc part (521). The bottom end of the screw part (5132) is connected to the bottom end of the double crescent-shaped receiving groove (223). On the locking connection part (402) of the bucket tooth (400), a lower crescent-shaped accommodating groove (422) is provided on the upper side wall and / or lower side wall respectively. In the locked state, the arc-shaped hook part (522) of the lower crescent lock (502) can abut against the inner side wall of the lower crescent-shaped accommodating groove (422).

8. The detachable bucket assembly according to claim 6, characterized in that, The tip (401) of the bucket tooth (400) is a solid multifaceted cone structure; the locking connection part (402) of the bucket tooth (400) also includes a skirt structure (423), which is used to cover the outer edge of the bucket tooth locking part (202) that houses the tooth seat (200).

9. The detachable bucket assembly according to claim 6, characterized in that, The detachable bucket assembly also includes a positioning block (800), which is disposed on the blade (100) at the contact position between the blade locking part (201) of the tooth seat (200) and the blade (100).

10. A bucket excavator, characterized in that, The bucket device includes the detachable bucket assembly as described in any one of claims 5 to 9.

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