Anti-loose excavator counterweight bolt

Abstract

The utility model relates to excavator counterweight bolt technical field especially a kind of anti-loose excavator counterweight bolt, including bolt body and the installation part matched with it, the bolt body includes nut and stud, the installation part front surface is equipped with locating slot, the locating slot rear inner wall is equipped with the screw hole matched with stud, the locating slot inside is equipped with fixed sheet, the fixed sheet surface middle is equipped with the through-hole matched with stud, the fixed sheet side surface is equipped with multiple anti-rotation blocks matched with the corner of locating slot, the nut is connected with fixed sheet by clamping device connection.The utility model is through the clamping effect of the clamping post and the clamping groove of clamping device, and anti-rotation block and corner clamping of locating slot, prevent the phenomenon that counterweight bolt loosens even falls off, avoid causing property loss and personal injury.

Description

Technical Field

[0001] This utility model relates to the field of excavator counterweight bolt technology, and in particular to an anti-loosening excavator counterweight bolt. Background Technology

[0002] Excavators are widely used earthmoving and rock-moving machinery, typically operating under high-load conditions. This places high demands on the effective and tight connection between various components and parts, making the counterweight a crucial component for balancing the excavator. Due to the harsh operating conditions of excavators, counterweight bolts frequently loosen or even fall off, causing property damage and even personal injury. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an anti-loosening excavator counterweight bolt.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] Design an anti-loosening excavator counterweight bolt, including a bolt body and a matching mounting part. The bolt body includes a nut and a stud. The front surface of the mounting part has a positioning groove with a regular hexagonal cross-section. The inner rear wall of the positioning groove has a threaded hole matching the stud. A fixing plate with a regular hexagonal cross-section is provided inside the positioning groove. A through hole matching the stud is provided in the middle of the surface of the fixing plate. The nut has a regular hexagonal cross-section, and the diameter of the inscribed circle of the regular hexagon is larger than the diameter of the threaded hole and the through hole. The stud passes through the through hole and is threadedly connected to the threaded hole. The side surface of the fixing plate has multiple anti-rotation blocks that match the corners of the positioning groove. All the anti-rotation blocks are tilted forward. The nut and the fixing plate are connected by a snap-fit ​​device.

[0006] Preferably, the snap-fit ​​device includes multiple snap-fit ​​posts and multiple snap-fit ​​slots. The multiple snap-fit ​​posts are all disposed on the rear surface of the nut, and the multiple snap-fit ​​slots are all formed on the front surface of the fixing piece. The multiple snap-fit ​​posts and multiple snap-fit ​​slots correspond to and match one-to-one, and the snap-fit ​​posts extend into the snap-fit ​​slots.

[0007] Preferably, the front surface of the mounting part is provided with an anti-collision block, which is disposed outside the positioning groove.

[0008] Preferably, the front surface of the nut is provided with an operating groove, and the cross-section of the operating groove is a regular hexagon.

[0009] Preferably, the included angle between the fixing plate and the anti-rotation block is 120-150 degrees.

[0010] Preferably, three anti-rotation blocks are provided, and the three anti-rotation blocks are evenly distributed on the side surface of the fixing plate.

[0011] The present invention proposes an anti-loosening excavator counterweight bolt, which has the following advantages: by using a snap-fit ​​device, the snap-fit ​​post is inserted into the snap-fit ​​groove, and then the stud is inserted into the threaded hole and threadedly connected to it. After the anti-rotation block is installed and fixed, multiple anti-rotation blocks are flattened with a hammer so that the anti-rotation blocks are placed in the corner of the positioning groove. Through the snap-fit ​​action of the snap-fit ​​post and the snap-fit ​​groove of the snap-fit ​​device, as well as the snap-fit ​​between the anti-rotation block and the corner of the positioning groove, the counterweight bolt is prevented from loosening or even falling off, thus avoiding property damage and personal injury. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is an enlarged view of position A in this utility model;

[0014] Figure 3 This is an enlarged view of position B of this utility model.

[0015] In the figure: Bolt body 1, nut 101, stud 102, mounting part 2, positioning groove 3, screw hole 4, fixing piece 5, through hole 6, anti-rotation block 7, snap-fit ​​post 8, snap-fit ​​groove 9, anti-collision block 10, operating groove 11. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Reference Figure 1-3 A type of anti-loosening excavator counterweight bolt includes a bolt body 1 and a matching mounting part 2. The bolt body 1 includes a nut 101 and a stud 102. The front surface of the mounting part 2 is provided with a positioning groove 3, the cross-sectional shape of which is a regular hexagon. The rear inner wall of the positioning groove 3 is provided with a screw hole 4 that matches the stud 102. The positioning groove 3 is provided with a fixing plate 5, the cross-sectional shape of which is a regular hexagon. The middle of the surface of the fixing plate 5 is provided with a through hole 6 that matches the stud 102. The cross-sectional shape of the nut 101 is a regular hexagon, and the diameter of the inscribed circle of the regular hexagon is larger than the diameter of the screw hole 4 and the through hole 6. The stud 102 passes through the through hole 6 and is threadedly connected to the screw hole 4. The side surface of the fixing plate 5 is provided with a plurality of anti-rotation blocks 7 that match the corners of the positioning groove 3. The plurality of anti-rotation blocks 7 are all tilted forward. The nut 101 and the fixing plate 5 are connected by a snap-fit ​​device.

[0018] The snap-fit ​​device includes multiple snap-fit ​​posts 8 and multiple snap-fit ​​grooves 9. The multiple snap-fit ​​posts 8 are all located on the rear surface of the nut 101, and the multiple snap-fit ​​grooves 9 are all located on the front surface of the fixing piece 5. The multiple snap-fit ​​posts 8 and the multiple snap-fit ​​grooves 9 correspond to and match one-to-one, and the snap-fit ​​posts 8 extend into the snap-fit ​​grooves 9.

[0019] A bumper block 10 is provided on the front surface of the mounting part 2, and the bumper block 10 is located outside the positioning groove 3. The bumper block 10 serves to prevent other heavy objects from hitting the nut 101.

[0020] The front surface of the nut 101 has an operating groove 11, the cross-section of which is a regular hexagon. This facilitates operation of the operating groove 11 using an Allen wrench, thus enriching the types of tools that can be used.

[0021] The included angle between the fixing plate 5 and the anti-rotation block 7 is 120-150 degrees, which makes it convenient to strike the anti-rotation block 7.

[0022] Three anti-rotation blocks 7 are provided, and the three anti-rotation blocks 7 are evenly distributed on the side surface of the fixing plate 5. The three anti-rotation blocks 7 are provided to facilitate bending.

[0023] Working principle: When installing the bolt body 1 and the mounting part 2, first, the stud 102 is passed through the through hole 6. Then, through the snap-fit ​​device, the snap-fit ​​post 8 is inserted into the snap-fit ​​groove 9. Then, the stud 102 is inserted into the screw hole 4 and threadedly connected to it. After the anti-rotation block 7 is installed and fixed, the multiple anti-rotation blocks 7 are flattened with a hammer so that the anti-rotation blocks 7 are placed in the corner of the positioning groove 3. Through the snap-fit ​​action of the snap-fit ​​post 8 and the snap-fit ​​groove 9 of the snap-fit ​​device, as well as the snap-fit ​​between the anti-rotation block 7 and the corner of the positioning groove 3, the counterweight bolt is prevented from loosening or even falling off, thus avoiding property damage and personal injury.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A non-loosening excavator counterweight bolt, comprising a bolt body (1) and a matching mounting part (2), characterized in that, The bolt body (1) includes a nut (101) and a stud (102). The mounting part (2) has a positioning groove (3) on its front surface. The positioning groove (3) has a regular hexagonal cross-section. The inner rear wall of the positioning groove (3) has a screw hole (4) that matches the stud (102). The positioning groove (3) has a fixing plate (5) inside. The fixing plate (5) has a regular hexagonal cross-section. The fixing plate (5) has a hole in the middle of its surface that matches the stud (102). The through hole (6) is provided. The cross-sectional shape of the nut (101) is a regular hexagon, and the diameter of the inscribed circle of the regular hexagon is larger than the diameter of the screw hole (4) and the through hole (6). The stud (102) passes through the through hole (6) and is threadedly connected to the screw hole (4). The side surface of the fixing plate (5) is provided with multiple anti-rotation blocks (7) that match the corners of the positioning groove (3). All the anti-rotation blocks (7) are tilted forward. The nut (101) and the fixing plate (5) are connected by a snap-fit ​​device.

2. The anti-loosening excavator counterweight bolt according to claim 1, characterized in that, The snap-fit ​​device includes multiple snap-fit ​​posts (8) and multiple snap-fit ​​grooves (9). The multiple snap-fit ​​posts (8) are all located on the rear surface of the nut (101), and the multiple snap-fit ​​grooves (9) are all located on the front surface of the fixing piece (5). The multiple snap-fit ​​posts (8) correspond one-to-one with the multiple snap-fit ​​grooves (9), and the snap-fit ​​posts (8) extend into the snap-fit ​​grooves (9).

3. The anti-loosening excavator counterweight bolt according to claim 1, characterized in that, The front surface of the mounting part (2) is provided with a collision protection block (10), which is located outside the positioning groove (3).

4. The anti-loosening excavator counterweight bolt according to claim 1, characterized in that, The front surface of the nut (101) is provided with an operating groove (11), and the cross section of the operating groove (11) is a regular hexagon.

5. The anti-loosening excavator counterweight bolt according to claim 1, characterized in that, The included angle between the fixing plate (5) and the anti-rotation block (7) is 120-150 degrees.

6. The anti-loosening excavator counterweight bolt according to claim 1, characterized in that, The number of anti-rotation blocks (7) is three, and the three anti-rotation blocks (7) are evenly arranged on the side surface of the fixing plate (5).

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