A length-adjustable rear axle seat for excavator bucket arm

Abstract

The present invention relates to the field of engineering machinery, and specifically to a rear axle seat of an excavator bucket arm with adjustable length, which comprises a bucket arm, a mounting hole is provided on the bucket arm, a rear axle seat is inserted in the mounting hole, the rear axle seat comprises a first semi-axle seat and a second semi-axle seat, a connecting sleeve is installed on the first semi-axle seat, a connecting tube is installed on the second semi-axle seat, the connecting tube is inserted into the connecting sleeve, the connecting sleeve and the connecting tube are threadedly matched, a first positioning tube is provided at one end of the first semi-axle seat facing the second semi-axle seat, the first positioning tube extends into the connecting sleeve, the first positioning tube and the connecting sleeve are fixedly connected, a second positioning tube is provided at one end of the second semi-axle seat facing the first semi-axle seat, the second positioning tube rests on the end of the connecting tube, and the second positioning tube and the connecting tube are fixedly connected. The rear axle seat of the excavator bucket arm with adjustable length can adjust the length of the rear axle seat, so that the rear axle seat can adapt to different types of booms and connecting rods, thereby improving the practicality of the rear axle seat and increasing the scope of application of the product.

Description

Technical Field

[0001] The invention relates to the field of engineering machinery, and in particular to a rear axle seat of an excavator bucket arm with adjustable length. Background Art

[0002] An excavator is a type of engineering machinery widely used in earthwork construction. The front side of the excavator is equipped with accessories, such as a bucket, a breaker hammer and a hydraulic shear. The accessories are connected to the excavator through a boom and a stick. An accessory cylinder for controlling the movement of the accessories is installed at the front end of the boom, and a stick cylinder for controlling the movement of the stick is installed on the upper part of the boom. In addition, a boom cylinder for controlling the movement of the boom is also installed on the excavator. The movement of the accessories is controlled by the accessory cylinder, and the extension and retraction of the boom cylinder and the stick cylinder controls the excavation, loading and other actions of the bucket.

[0003] The arm is equipped with a rear axle seat, and the front end of the boom is equipped with two spaced connecting plates, which extend to the left and right sides of the rear axle seat and are hinged to the rear axle seat, thereby realizing the arm's rotation on the boom. The length of the rear axle seat of the existing excavator is fixed and cannot be adjusted, and the adaptability range is narrow. When the length of the rear axle seat of the arm needs to be changed, it cannot be applied. The uniformity and practicality of the parts are poor, and need to be improved. Summary of the invention

[0004] The purpose of the present invention is to provide a length-adjustable rear axle seat of an excavator bucket arm with a wide adaptability and high practicality in view of the above problems.

[0005] In order to achieve the above-mentioned purpose, the present invention discloses a length-adjustable rear axle seat of an excavator boom, comprising a boom, a mounting hole being provided on the boom, and a rear axle seat being inserted in the mounting hole. Its structural characteristics are: the rear axle seat comprises a first half-axle seat and a second half-axle seat, a connecting sleeve being installed on the first half-axle seat, a connecting tube being installed on the second half-axle seat, the connecting tube being inserted into the connecting sleeve, and the connecting sleeve and the connecting tube being threadedly matched.

[0006] After adopting the above structure, the rear axle seat is divided into two parts, a first half-axle seat and a second half-axle seat, and a connecting sleeve is arranged on the first half-axle seat, and a connecting tube is arranged on the second half-axle seat, so that the connecting sleeve and the connecting tube are threadedly matched. Through the engagement of the threads, the length of the rear axle seat can be adjusted, so that the rear axle seat can be adapted to different types of booms and connecting rods, thereby improving the practicability of the rear axle seat and expanding the application range of the product.

[0007] Regarding the connection structure between the first semi-axle seat and the connecting sleeve, a first positioning cylinder is provided at one end of the first semi-axle seat facing the second semi-axle seat. The first positioning cylinder extends into the connecting sleeve. The first positioning cylinder and the connecting sleeve are fixedly connected. The connection strength between the first semi-axle seat and the connecting sleeve is relatively high.

[0008] Regarding the connection structure between the second semi-axle seat and the connecting tube, a second positioning tube is provided at one end of the second semi-axle seat facing the first semi-axle seat, the second positioning tube rests on the end of the connecting tube, the second positioning tube and the connecting tube are fixedly connected, and the connection strength between the second semi-axle seat and the connecting tube is relatively high.

[0009] Preferably, the connecting tube is provided with an annular edge for blocking the connecting sleeve, the annular edge is located at an end away from the first semi-axle seat, and the annular edge extends outwardly along the radial direction of the connecting tube. When the connecting tube is screwed into the end of the connecting sleeve, the connecting sleeve rests on the annular edge.

[0010] Preferably, an internal thread is provided on the inner wall of the connecting sleeve, and an external thread is provided on the outer wall of the connecting tube, and the connecting sleeve and the connecting tube are threadably matched through the internal thread and the external thread.

[0011] In order to enhance the connection strength between the rear axle seat and the boom, a stop edge is provided on the first half axle seat. The stop edge is disc-shaped and is pressed against the side of the boom.

[0012] In order to further enhance the connection strength between the rear axle seat and the boom, a stop edge is provided on the second half-axle seat. The stop edge is disc-shaped and is pressed against the side of the boom.

[0013] Preferably, the fixed connection is welding.

[0014] To sum up, the beneficial effects of the present invention are: the rear axle seat is divided into two parts, a first half-axle seat and a second half-axle seat, and a connecting sleeve is provided on the first half-axle seat, and a connecting tube is provided on the second half-axle seat, so that the connecting sleeve and the connecting tube are threadedly matched, and the length of the rear axle seat can be adjusted through the engagement of the threads, so that the rear axle seat can be adapted to different types of booms and connecting rods, thereby improving the practicability of the rear axle seat and increasing the scope of application of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention;

[0016] Figure 2 for Figure 1 A local enlarged structural diagram of point A in the middle;

[0017] Figure 3 It is a structural schematic diagram of the rear axle seat;

[0018] Figure 4 It is a schematic diagram of the structure of the rear axle seat on the bucket arm.

[0019] In the figure: a first semi-axle seat 1, a connecting sleeve 2, a connecting tube 3, a second semi-axle seat 4, an internal thread 5, an external thread 6, a boom 7, a mounting hole 8, a first positioning tube 9, a ring edge 10, a second positioning tube 11, and a retaining edge 12. DETAILED DESCRIPTION

[0020] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0021] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0022] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0023] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0024] The following is a description of preferred embodiments of the present invention with reference to the accompanying drawings.

[0025] A length-adjustable rear axle seat of an excavator boom comprises a boom 7, a mounting hole 8 is provided on the boom 7, a rear axle seat is inserted into the mounting hole 8, and its structural features are: the rear axle seat comprises a first semi-axle seat 1 and a second semi-axle seat 4, a connecting sleeve 2 is installed on the first semi-axle seat 1, a connecting tube 3 is installed on the second semi-axle seat 4, the connecting tube 3 is inserted into the connecting sleeve 2, and the connecting sleeve 2 and the connecting tube 3 are threadedly matched. Figure 1 After adopting the above structure, the rear axle seat is divided into two parts, a first semi-axle seat 1 and a second semi-axle seat 4, and a connecting sleeve 2 is arranged on the first semi-axle seat 1, and a connecting tube 3 is arranged on the second semi-axle seat 4, so that the connecting sleeve 2 and the connecting tube 3 are threadedly matched. Through the engagement of the threads, the length of the rear axle seat can be adjusted, so that the rear axle seat can be adapted to different types of booms and connecting rods, thereby improving the practicality of the rear axle seat and expanding the application range of the product.

[0026] See attached Figure 1Regarding the connection structure between the first semi-axle seat 1 and the connecting sleeve 2, a first positioning cylinder 9 is provided at one end of the first semi-axle seat 1 facing the second semi-axle seat 4. The first positioning cylinder 9 extends into the connecting sleeve 2. The first positioning cylinder 9 and the connecting sleeve 2 are fixedly connected, and the connection strength between the first semi-axle seat 1 and the connecting sleeve 2 is relatively high.

[0027] See attached Figure 1 Regarding the connection structure between the second semi-axle seat 4 and the connecting tube 3, a second positioning tube 11 is provided at one end of the second semi-axle seat 4 facing the first semi-axle seat 1. The second positioning tube 11 is against the end of the connecting tube 3. The second positioning tube 11 and the connecting tube 3 are fixedly connected, and the connection strength between the second semi-axle seat 4 and the connecting tube 3 is relatively high.

[0028] See attached Figure 3 The connecting tube 3 is provided with an annular edge 10 for blocking the connecting sleeve 2. The annular edge 10 is located at an end away from the first half-axle seat 1 and extends outward along the radial direction of the connecting tube 3. When the connecting tube 3 is screwed into the end of the connecting sleeve 2, the connecting sleeve 2 rests on the annular edge 10.

[0029] See attached Figure 1 , Attachment Figure 3 An internal thread 5 is provided on the inner wall of the connecting sleeve 2, and an external thread 6 is provided on the outer wall of the connecting tube 3. The connecting sleeve 2 and the connecting tube 3 are threadably matched through the internal thread 5 and the external thread 6.

[0030] See attached Figure 1 In order to enhance the connection strength between the rear axle seat and the boom 7, a retaining edge 12 is provided on the first semi-axle seat 1, and the retaining edge 12 is in a disc shape and presses against the side of the boom 7. In order to further enhance the connection strength between the rear axle seat and the boom 7, a retaining edge 12 is provided on the second semi-axle seat 4, and the retaining edge 12 is in a disc shape and presses against the side of the boom 7, and the fixed connection is welding.

[0031] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A rear axle seat of an excavator bucket arm with adjustable length, comprising a bucket arm (7), a mounting hole (8) being provided on the bucket arm (7), a rear axle seat being inserted into the mounting hole (8), It is characterized in that The rear axle seat comprises a first half-axle seat (1) and a second half-axle seat (4); a connecting sleeve (2) is mounted on the first half-axle seat (1), and a connecting tube (3) is mounted on the second half-axle seat (4); the connecting tube (3) is inserted into the connecting sleeve (2), and the connecting sleeve (2) and the connecting tube (3) are threadedly matched; A first positioning cylinder (9) is provided at one end of the first semi-axle seat (1) facing the second semi-axle seat (4), the first positioning cylinder (9) extending into the connecting sleeve (2), and the first positioning cylinder (9) and the connecting sleeve (2) are fixedly connected; A second positioning cylinder (11) is provided at one end of the second semi-axle seat (4) facing the first semi-axle seat (1), the second positioning cylinder (11) abuts against the end of the connecting cylinder (3), and the second positioning cylinder (11) and the connecting cylinder (3) are fixedly connected; An internal thread (5) is provided on the inner wall of the connecting sleeve (2), and an external thread (6) is provided on the outer wall of the connecting tube (3). The connecting sleeve (2) and the connecting tube (3) are threadably matched via the internal thread (5) and the external thread (6).

2. The length-adjustable rear axle seat of an excavator bucket arm as claimed in claim 1, It is characterized in that The connecting tube (3) is provided with an annular edge (10) for blocking the connecting sleeve (2); the annular edge (10) is located at an end away from the first semi-axle seat (1); and the annular edge (10) extends outwardly along the radial direction of the connecting tube (3).

3. The length-adjustable rear axle seat of an excavator bucket arm as claimed in claim 1, It is characterized in that The first half-axle seat (1) is provided with a stop edge (12), the stop edge (12) is disc-shaped, and the stop edge (12) is pressed against the side of the boom (7).

4. The length-adjustable rear axle seat of an excavator bucket arm as claimed in claim 1, It is characterized in that The second half-axle seat (4) is provided with a stop edge (12), the stop edge (12) is disc-shaped, and the stop edge (12) is pressed against the side of the boom (7).

5. The length-adjustable rear axle seat of an excavator boom as claimed in any one of claims 1 to 4, It is characterized in that The fixed connection is welding.

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