Side tooth structure for bucket

Abstract

The utility model relates to the technical field of buckets, in particular to a side tooth structure for a bucket, which comprises a mounting plate part and a tooth plate part positioned on the inner side part of the mounting plate part, through mounting holes are formed in four corners of the mounting plate part, and the side tooth structure is characterized in that a middle stress relief groove is formed in the position, among the four mounting holes, of the inner plate surface of the mounting plate part; due to the arrangement of the middle stress relieving groove, the contact surface of the inner plate surface of the mounting plate part and the bucket can be effectively reduced, the bulging rate of the inner plate surface of the mounting plate part is reduced, and the casting qualification rate of the side tooth for the bucket is further improved; a gap is formed between the position, corresponding to the middle stress relieving groove, of the inner plate surface of the mounting plate part after mounting and the side wall surface of the bucket, so that the stress of the mounting plate part during use can be well eliminated, and the service life of the mounting plate part is further prolonged; and the precision of the position of the corresponding middle stress relief groove for producing the side tooth structure mold can be properly reduced, and the manufacturing difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of buckets, in particular to a side tooth structure for buckets. Background Art

[0002] Since the side teeth for buckets are precision casting products, after quenching process, they have the characteristics of insufficient toughness and strong rigidity. However, the existing side teeth for buckets generally include a mounting plate part with a flat inner plate surface and a tooth plate part with a curved inner plate surface. Mounting holes are provided at the four corners of the mounting plate part, so that the inner plate surface of the mounting plate part has a larger plane between the four mounting holes. During the production process, it is found through statistics that the incidence of bulging in the plane is about 30%. After the side teeth for buckets with bulging in the plane are installed, a stress fulcrum is formed between the bulging part of the inner plate surface of the mounting plate part and the bucket, resulting in greater stress (i.e., greater local stress in the mounting plate part), which makes the mounting plate part prone to fracture; that is, the scrap rate of the side teeth for buckets due to the bulging inner plate surface of the mounting plate part is about 30%.

[0003] For this purpose, we designed a side tooth structure for bucket. Utility Model Content

[0004] In order to overcome the deficiencies in the background technology, the utility model discloses a side tooth structure for a bucket.

[0005] In order to achieve the above-mentioned invention object, the utility model adopts the following technical solutions:

[0006] A side tooth structure for a bucket includes a mounting plate portion and a tooth plate portion located inside the mounting plate portion, wherein the four corners of the mounting plate portion are provided with penetrating mounting holes, and the feature is that a middle stress relief groove is provided on the inner plate surface of the mounting plate portion between the four mounting holes.

[0007] Preferably, a side stress relief groove penetrating along the width direction of the inner plate surface of the mounting plate portion is provided near the inner side portion.

[0008] Preferably, a positioning boss is provided on the inner plate surface of the mounting plate portion on one side of the side stress relief groove close to the tooth plate portion, and the side wall surface of the positioning boss facing away from the tooth plate portion is coplanar with the corresponding side wall surface of the side stress relief groove.

[0009] Preferably, the side edge of the protruding surface of the positioning boss is colinear with the inner side edge of the inner plate surface of the tooth plate portion.

[0010] Preferably, the bottom surface of the middle stress relief groove and the inner surface of the mounting plate portion are transitioned through an inclined surface.

[0011] Preferably, a convex ring portion is provided on the outer plate surface of the mounting plate portion at a position corresponding to the peripheral side of the mounting hole.

[0012] Preferably, the outer plate surface of the tooth plate portion protrudes from the outer plate surface of the mounting plate portion, and a transition slope is provided between the inner side of the outer plate surface of the tooth plate portion and the inner side of the outer plate surface of the mounting plate portion.

[0013] Preferably, a plurality of reinforcing ribs are provided at intervals along the length direction of the outer plate surface of the mounting plate portion, and the inner end portions of the reinforcing ribs are connected to the transition slope.

[0014] Preferably, the outer plate surface of the mounting plate portion has at least one reinforcing rib at a position corresponding to the middle stress relief groove, and the outer end of the reinforcing rib extends to the outside of the middle stress relief groove.

[0015] Due to the adoption of the above-mentioned technical solution, the utility model has the following beneficial effects:

[0016] 1. Due to the setting of the stress relief groove in the middle, the contact surface between the inner plate surface of the mounting plate and the bucket can be effectively reduced, the bulging rate of the inner plate surface of the mounting plate can be reduced, and the qualified rate of the side tooth casting for the bucket can be improved;

[0017] 2. Due to the setting of the middle stress relief groove, there is a gap between the position of the inner plate surface of the mounting plate corresponding to the middle stress relief groove and the side wall surface of the bucket after installation, which can also effectively eliminate the stress of the mounting plate during use, thereby increasing the service life of the mounting plate;

[0018] 3. Due to the existence of the middle stress relief groove, even if there is bulging in the middle stress relief groove, after installation, the bulge will not contact the bucket, and will not cause large local stress. At the same time, the accuracy of the position of the middle stress relief groove corresponding to the side tooth structure mold can be appropriately reduced, reducing the difficulty of production;

[0019] 4. Due to the setting of the side stress relief groove, the inner plate surface of the mounting plate can be prevented from contacting the outer edge of the front end surface of the bucket side wall after installation, which can effectively prevent the outer edge of the front end surface of the bucket side wall from applying linear stress to the inner plate surface of the mounting plate, causing the mounting plate to break, thereby increasing the service life of the side tooth structure; combined with the setting of the positioning boss, it can ensure that the side stress relief groove corresponds to the outer edge of the front end surface of the bucket side wall after installation, and no installation deviation will occur.

[0020] 5. The setting of the reinforcing ribs can not only effectively reduce the thickness of the mounting plate while ensuring the strength of the mounting plate, thereby reducing the material used in the side tooth structure and saving manufacturing costs; it can also compensate for the reduced strength of the mounting plate due to the presence of the middle stress relief groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the prior art;

[0022] Figure 2 It is a structural schematic diagram of the prior art from another perspective;

[0023] Figure 3 It is a schematic diagram of the structure of the utility model;

[0024] Figure 4 It is a structural schematic diagram of the utility model from another viewing angle;

[0025] Figure 5 It is the front view of the utility model.

[0026] In the figure: 1. mounting plate; 11. mounting hole; 12. middle stress relief groove; 13. side stress relief groove; 14. convex ring; 2. tooth plate; 3. positioning boss; 4. transition slope; 5. reinforcing rib. DETAILED DESCRIPTION

[0027] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", etc. to indicate directions or positional relationships, they only correspond to the drawings of the present application, in order to facilitate the description of the present invention; it should be understood that if there are terms such as "end", "side", "end part", "lateral", "lateral", "transverse", "longitudinal", etc. to indicate directions or positional relationships, they only correspond to the length and width of the corresponding parts, that is, "end part" indicates the head and tail areas in the length direction of the corresponding part, and "side part" indicates the head and tail areas in the width direction of the corresponding part; this is for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction.

[0028] Embodiment 1, in combination with the attached Figure 3-5 A side tooth structure for a bucket includes a mounting plate portion 1 and a tooth plate portion 2 located inside the mounting plate portion 1. The mounting plate portion 1 is provided with penetrating mounting holes 11 at four corners, and a middle stress relief groove 12 is provided on the inner plate surface of the mounting plate portion 1 between the four mounting holes 11.

[0029] According to the needs, the ratio of the notch area of ​​the middle stress relief groove 12 to the area of ​​the mounting plate portion 1 is 1 / 2 to 2 / 3.

[0030] Due to the setting of the middle stress relief groove 12, the contact surface between the inner plate surface of the mounting plate portion 1 and the bucket can be effectively reduced, and the bulging rate of the inner plate surface of the mounting plate portion 1 can be reduced, thereby improving the qualified rate of the side tooth casting for the bucket; at the same time, since there is a gap between the position of the inner plate surface of the mounting plate portion 1 corresponding to the middle stress relief groove 12 and the side wall surface of the bucket after installation, the stress of the mounting plate portion 1 during use can also be well eliminated, thereby improving the service life of the mounting plate portion 1; at the same time, due to the existence of the middle stress relief groove 12, even if bulging occurs in the middle stress relief groove 12, after installation, the bulging will not contact the bucket, and will not cause the occurrence of large local stress. At the same time, the accuracy of the position of the middle stress relief groove 12 corresponding to the side tooth structure mold can also be appropriately reduced, thereby reducing the difficulty of production.

[0031] In order to further improve the service life of the side tooth structure, a side stress relief groove 13 is provided near the inner side of the inner plate surface of the mounting plate portion 1 and runs through the side stress relief groove 13 along the width direction thereof;

[0032] As required, the bottom surface of the middle stress relief groove 12 and the inner surface of the mounting plate portion 1 are transitioned through an inclined surface.

[0033] In the example, the depth of the middle stress relief groove 12 is 2~4mm; for example, when the depth of the middle stress relief groove 12 is 3mm, the bottom surface of the middle stress relief groove 12 can allow a bulge with a height of less than 3mm; that is, when a bulge with a height of less than 3mm appears on the bottom surface of the middle stress relief groove 12, after installation, the bulge will not generate conflicting stress with the bucket, and therefore will not cause the mounting plate portion 1 to break.

[0034] It should be noted that the bulging of the inner surface of the mounting plate portion can be understood as the portion protruding from the inner surface of the mounting plate portion. That is to say, when the bulging on the bottom surface of the middle stress relief groove 12 does not extend out of the plane where the inner surface of the mounting plate portion is located, it can be considered that there is no bulging on the inner surface of the mounting plate portion.

[0035] Furthermore, a positioning boss 3 is provided on the inner plate surface of the mounting plate portion 1 at one side of the side stress relief groove 13 close to the tooth plate portion 2 , and the side wall surface of the positioning boss 3 facing away from the tooth plate portion 2 is coplanar with the corresponding side wall surface of the side stress relief groove 13 .

[0036] During installation, the positioning boss 3 contacts the front end face of the bucket side wall, so that the side stress relief groove 13 corresponds to the outer edge of the front end face of the bucket side wall, preventing the outer edge of the front end face of the bucket side wall from contacting the inner plate surface of the mounting plate portion, thereby effectively preventing the outer edge of the front end face of the bucket side wall from applying linear stress to the inner plate surface of the mounting plate portion, causing the mounting plate portion to break, thereby increasing the service life of the side tooth structure. At the same time, due to the presence of the positioning boss 3, it is also possible to prevent the side tooth structure from shaking after working for a period of time. When the side tooth structure shakes when working again, the side tooth structure is very easy to be damaged. It should be noted that: since the side tooth structure is installed by the bolt passing through the mounting hole 11, wherein the mounting hole 11 and the bolt screw are clearance-matched, the side tooth structure shakes due to the clearance-matching, and the positioning boss 3 contacts the front end face of the bucket side wall, which is used to offset the force of the side tooth structure when it is used, thereby reducing the force on the bolt, thereby effectively preventing the bolt from loosening, thereby preventing the side tooth structure from shaking.

[0037] Furthermore, the side edge of the protruding surface of the positioning boss 3 is colinear with the inner side edge of the inner plate surface of the tooth plate part 2; that is, the soil, gravel and other objects shoveled in by the tooth plate part 2 can pass through the guide space of the inner plate surface of the tooth plate part 2 and enter the bucket without being blocked by the positioning boss 3.

[0038] According to the needs, after the side tooth structure is installed, the protruding surface of the positioning boss 3 and the inner side surface of the inner side wall of the bucket are located in the same plane; specifically, there can be a certain error, that is, it can be said that after the side tooth structure is installed, a small step can be allowed between the protruding surface of the positioning boss 3 and the inner side surface of the inner side wall of the bucket. Therefore, the height of the positioning boss 3 needs to be designed based on the thickness of the inner side wall of the bucket, and the thickness of the positioning boss 3 is not specifically limited here.

[0039] Embodiment 2, combined with the attached Figure 4 A side tooth structure for a bucket, based on the first embodiment, a convex ring portion 14 is provided on the outer plate surface of the mounting plate portion 1 corresponding to the peripheral side of the mounting hole 11; due to the provision of the convex ring portion 14, the thickness of the bolt head or nut pressing position during installation can be effectively increased, thereby reducing the risk of damage to the mounting plate portion 1.

[0040] Embodiment 3, in combination with the attached Figure 4 , a side tooth structure for a bucket, based on the first or second embodiment, the outer plate surface of the tooth plate portion 2 protrudes from the outer plate surface of the mounting plate portion 1, and the inner side of the outer plate surface of the tooth plate portion 2 and the inner side of the outer plate surface of the mounting plate portion 1 are provided with a transition slope 4;

[0041] In this way, a cliff-like thickness difference between the mounting plate portion 1 and the tooth plate portion 2 can be prevented, and the strength of the side tooth structure can be effectively increased.

[0042] Furthermore, a plurality of reinforcing ribs 5 are provided at intervals along the length direction of the outer plate surface of the mounting plate portion 1, and the inner end of the reinforcing rib 5 is connected to the transition slope 4; due to the provision of the reinforcing rib 5, the thickness of the mounting plate portion 1 can be effectively reduced while ensuring the strength of the mounting plate portion 1, thereby reducing the material used in the side tooth structure and saving manufacturing costs.

[0043] As needed, the outer plate surface of the mounting plate portion 1 has at least one reinforcing rib 5 at a position corresponding to the middle stress relief groove 12, and the outer end of the reinforcing rib 5 extends to the outside of the middle stress relief groove 12; such an arrangement can compensate for the reduction in strength of the mounting plate portion 1 after the middle stress relief groove 12 is set through the reinforcing rib 5, so that the strength of the mounting plate portion 1 will not be reduced after the middle stress relief groove 12 is set on the mounting plate portion 1.

[0044] As required, the outer side surface of the reinforcing rib 5 and the outer plate surface of the tooth plate portion 2 are located in the same plane.

[0045] As required, the number of the reinforcing ribs 5 is specifically set according to the length of the mounting plate portion 1 , and the number of the reinforcing ribs 5 is not specifically limited herein.

[0046] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and it is intended that all changes that fall within the meaning and scope of equivalent elements are included in the present invention.

Claims

1. A side tooth structure for a bucket, comprising a mounting plate portion (1) and a tooth plate portion (2) located inside the mounting plate portion (1), wherein the mounting plate portion (1) is provided with penetrating mounting holes (11) at four corners thereof, and characterized in that: A middle stress relief groove (12) is provided on the inner plate surface of the mounting plate portion (1) between the four mounting holes (11).

2. A side tooth structure for a bucket according to claim 1, characterized in that: A side stress relief groove (13) penetrating along the width direction of the mounting plate portion (1) is provided on the inner plate surface near the inner side portion.

3. A side tooth structure for a bucket according to claim 2, characterized in that: A positioning boss (3) is provided on the inner plate surface of the mounting plate portion (1) at a side of the side stress relief groove (13) close to the tooth plate portion (2), and a side wall surface of the positioning boss (3) facing away from the tooth plate portion (2) is coplanar with a side wall surface of the corresponding side stress relief groove (13).

4. A side tooth structure for a bucket according to claim 3, characterized in that: The side edge of the protruding surface of the positioning boss (3) is collinear with the inner side edge of the inner plate surface of the tooth plate portion (2).

5. A side tooth structure for a bucket according to claim 1, characterized in that: The bottom surface of the middle stress relief groove (12) and the inner plate surface of the mounting plate portion (1) are transitioned via an inclined surface.

6. A side tooth structure for a bucket according to claim 1, characterized in that: A convex ring portion (14) is provided on the outer plate surface of the mounting plate portion (1) at a position corresponding to the peripheral side of the mounting hole (11).

7. A side tooth structure for a bucket according to claim 1, characterized in that: The outer plate surface of the toothed plate portion (2) protrudes from the outer plate surface of the mounting plate portion (1), and a transition slope (4) is provided on the inner side of the outer plate surface of the toothed plate portion (2) and the inner side of the outer plate surface of the mounting plate portion (1).

8. A side tooth structure for a bucket according to claim 7, characterized in that: The outer plate surface of the mounting plate portion (1) is provided with a plurality of reinforcing ribs (5) at intervals along its length direction, and the inner ends of the reinforcing ribs (5) are connected to the transition slope (4).

9. A side tooth structure for a bucket according to claim 8, characterized in that: The outer plate surface of the installation plate portion (1) has at least one reinforcing rib (5) at a position corresponding to the middle stress relief groove (12), and the outer end of the reinforcing rib (5) extends to the outside of the middle stress relief groove (12).

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