Main beam of rotary platform of excavator

Abstract

The utility model discloses a main beam of a rotary platform of an excavator, which belongs to the technical field of main beams of rotary platforms and is characterized in that a support rod is provided with a turntable, the turntable is provided with a cross beam in an extending manner, the turntable and the cross beam are provided with surrounding limiting plates and limiting plates, the limiting plates are provided with positioning holes and limiting holes, and the turntable is arranged on the turntable; a driving piece is installed on the inner side of the inner limiting piece, the base and the limiting platform are installed on the driving piece of the excavator, after installation, the driving piece is started to drive the rotating disc and the cross beam to steer, and the rotating disc and the cross beam rotate along the rotating groove through the supporting rod in the steering process. In the rotating process, a supporting rod rotates along a rotating groove between a limiting platform and an inner limiting piece, the supporting performance is better in the rotating process, in the rotating process, a surrounding limiting plate and a limiting plate are fixedly connected with the operation box, and the operation box is supported and connected through a rotating disc and a cross beam; in the using process, damping treatment is conducted through the damping disc.

Description

Technical Field

[0001] The utility model relates to a main beam of a rotary platform of an excavator, belonging to the technical field of the main beam of the rotary platform. Background Art

[0002] As disclosed in the patent application No. CN206015773U, a rotary platform for an excavator includes small ear plates, large ear plates, a right main beam, a front bending plate, an upper cover plate and a boom pin hole; the large ear plates are tightly welded to the right main beam, and the small ear plates are tightly welded to the large ear plates; the small ear plates, the large ear plates and the right main beam are welded in sequence, and a boom pin hole is arranged on the overlapping welding layer of the small ear plates, the large ear plates and the right main beam. At the same time, on one side of the right main beam where the small ear plates and the large ear plates are arranged, the front bending plate is perpendicularly welded to the large ear plates, and the small ear plates are only located on one side of the front bending plate, while the large ear plates are distributed on both sides of the front bending plate; among them, the large ear plates extend from one side of the front bending plate and overlap with the upper cover plate on the right main beam. By improving the structure of the large ear plates, extending them to the other side of the front bending plate and overlapping with the upper cover plate on the right main beam, the cracked part of the right main beam is strengthened, the problem of fatigue cracking of the main beam is solved, and thus the service life of the rotary platform is improved.

[0003] Based on retrieval and analysis, it is found that there are still deficiencies in the existing technology:

[0004] In the existing technology, the extending support effect of the main beam of the rotary platform during use is poor, and the rotation balance effect is poor. Therefore, a main beam of a rotary platform for an excavator is needed to improve the above deficiencies. Summary of the Utility Model

[0005] The main purpose of the utility model is to provide a main beam of a rotary platform for an excavator.

[0006] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0007] A main beam of a rotary platform for an excavator includes a base for installation and a limiting platform, and an inner limiting member is installed inside the limiting platform;

[0008] A rotating groove is formed between the limiting platform and the inner limiting member, a support rod is rotatably connected in the rotating groove, a rotating disc is installed on the support rod, and a cross beam is installed on one side of the rotating disc by extension;

[0009] A connecting mechanism is installed on the rotating disc and the cross beam.

[0010] Preferably, the connecting mechanism includes a surrounding limiting plate, a limiting plate, a positioning hole and a limiting hole;

[0011] A surrounding limiting plate and a limiting plate are installed on the rotating disc and the cross beam, a positioning hole is formed in the limiting plate, and a limiting hole is formed outside the positioning hole.

[0012] Preferably, a shock-absorbing disc is installed on the turntable, and a shock-absorbing structure is installed between the shock-absorbing disc and the turntable.

[0013] Preferably, a rotation driving groove is formed in the inner limiting member, and a driving member is installed in the rotation driving groove.

[0014] Preferably, the turntable and the cross beam are of an integral structure.

[0015] Preferably, the limiting plate on the turntable and the cross beam and the surrounding limiting plate are integrally formed.

[0016] The beneficial technical effects of the present utility model:

[0017] A main beam of a rotary platform of an excavator provided by the present utility model, a limiting platform is installed on the base, an inner limiting member is installed in the middle of the limiting platform, a rotating groove is formed between the inner limiting member and the limiting platform, a support rod is rotatably connected in the rotating groove, a turntable is installed on the support rod, a cross beam is extended and installed on the turntable, surrounding limiting plates and limiting plates are distributed on the turntable and the cross beam, positioning holes and limiting holes are distributed on the limiting plates, a turntable is installed on the turntable, a driving member is installed inside the inner limiting member, the base and the limiting platform are installed on the driving member of the excavator, after installation, the driving member is started to drive the turntable and the cross beam to turn, during the turning of the turntable and the cross beam, the support rod rotates along the rotating groove, during the rotation, the support rod rotates along the rotating groove between the limiting platform and the inner limiting member, so as to achieve better support during the rotation, during the turning, the surrounding limiting plates and the limiting plates are fixedly connected with the operation box, the operation box is supported and connected by the turntable and the cross beam, and during use, shock absorption treatment is carried out through the shock-absorbing disc. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of a device according to a preferred embodiment of a main beam of a rotary platform of an excavator according to the present utility model;

[0019] Figure 2 It is a partial side view of a preferred embodiment of a main beam of a rotary platform of an excavator according to the present utility model;

[0020] Figure 3 It is a side view of the overall structure of a preferred embodiment of a main beam of a rotary platform of an excavator according to the present utility model.

[0021] In the figure: 1, base; 2, rotating groove; 3, support rod; 4, turntable; 5, shock-absorbing disc; 6, surrounding limiting plate; 7, cross beam; 8, limiting plate; 9, positioning hole; 10, limiting hole; 11, limiting platform; 12, inner limiting member; 13, rotation driving groove. Detailed Description of the Invention

[0022] To make the technical solutions of the present utility model clearer and more definite for those skilled in the art, the present utility model will be further described in detail below in conjunction with embodiments and the accompanying drawings. However, the implementation manners of the present utility model are not limited thereto.

[0023] As Figure 1 - Figure 3 shown, a main beam of a swing platform of an excavator provided in this embodiment includes a base 1 for installation and a limit platform 11, and an inner limit member 12 is installed inside the limit platform 11;

[0024] A rotating groove 2 is provided between the limit platform 11 and the inner limit member 12. A support rod 3 is rotatably connected in the rotating groove 2. A turntable 4 is installed on the support rod 3, and a cross beam 7 is installed on one side of the turntable 4 extending;

[0025] A connecting mechanism is installed on the turntable 4 and the cross beam 7.

[0026] The connecting mechanism includes a surrounding limit plate 6, a limit plate 8, a positioning hole 9, and a limit hole 10;

[0027] The surrounding limit plate 6 and the limit plate 8 are installed on the turntable 4 and the cross beam 7. The limit plate 8 is provided with a positioning hole 9, and a limit hole 10 is provided outside the positioning hole 9.

[0028] A shock absorption disc 5 is installed on the turntable 4, and a shock absorption structure is installed between the shock absorption disc 5 and the turntable 4.

[0029] A rotation driving groove 13 is provided inside the inner limit member 12, and a driving member is installed in the rotation driving groove 13.

[0030] The turntable 4 and the cross beam 7 are of an integral structure.

[0031] The limit plate 8 and the surrounding limit plate 6 on the turntable 4 and the cross beam 7 are integrally formed.

[0032] As Figure 1 - Figure 3 shown, the working process of a main beam of a swing platform of an excavator provided in this embodiment is as follows: Install the base 1 and the limit platform 11 on the driving member of the excavator. After installation, start the driving member to drive the turntable 4 and the cross beam 7 to turn. During the turning of the turntable 4 and the cross beam 7, the support rod 3 rotates along the rotating groove 2. During the rotation, the support rod 3 rotates along the rotating groove 2 between the limit platform 11 and the inner limit member 12, so as to achieve better support during the rotation. During the turning, the surrounding limit plate 6 and the limit plate 8 are fixedly connected to the operation box, and the operation box is supported and connected by the turntable 4 and the cross beam 7. During use, shock absorption treatment is performed through the shock absorption disc 5.

[0033] Embodiment

[0034] As Figure 1 - Figure 3 shown, a limit platform 11 is installed on the base 1, an inner limit member 12 is installed in the middle of the limit platform 11, a rotation groove 2 is formed between the inner limit member 12 and the limit platform 11, a support rod 3 is rotatably connected in the rotation groove 2, a turntable 4 is installed on the support rod 3, a cross beam 7 is extended and installed on the turntable 4, surrounding limit plates 6 and limit plates 8 are distributed on the turntable 4 and the cross beam 7, positioning holes 9 and limit holes 10 are distributed on the limit plates 8, a turntable 4 is installed on the turntable 4, a driving member is installed inside the inner limit member 12, the base 1 and the limit platform 11 are installed on the driving member of the excavator. After installation, the driving member is started to drive the turntable 4 and the cross beam 7 to turn. During the turning of the turntable 4 and the cross beam 7, the support rod 3 rotates along the rotation groove 2. During the rotation, the support rod 3 rotates along the rotation groove 2 between the limit platform 11 and the inner limit member 12, so as to achieve better support during the rotation. During the turning, the operation box is fixedly connected through the surrounding limit plates 6 and the limit plates 8, and the operation box is supported and connected through the turntable 4 and the cross beam 7. During use, shock absorption treatment is carried out through the shock absorption disc 5.

[0035] The above is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the scope disclosed by the present invention, according to the technical solution and concept of the present invention, makes equivalent substitutions or changes, all belong to the protection scope of the present invention.

Claims

1. A main beam of a rotary platform of an excavator, comprising a base (1) for installation and a limit platform (11), wherein an inner limit member (12) is installed inside the limit platform (11); Features: A rotation groove (2) is provided between the limiting platform (11) and the inner limiting member (12), a support rod (3) is rotatably connected in the rotation groove (2), a rotating disk (4) is mounted on the support rod (3), and a crossbeam (7) is extended and mounted on one side of the rotating disk (4); A connecting mechanism is installed on the rotating disk (4) and the crossbeam (7).

2. The main beam of the excavator slewing platform according to claim 1, characterized in that: The connecting mechanism comprises a surrounding limiting plate (6), a limiting plate (8), a positioning hole (9) and a limiting hole (10); A surrounding limiting plate (6) and a limiting plate (8) are installed on the rotating disk (4) and the crossbeam (7); a positioning hole (9) is provided on the limiting plate (8); and a limiting hole (10) is provided outside the positioning hole (9).

3. The main beam of the excavator revolving platform according to claim 2, characterized in that: A shock absorbing plate (5) is installed on the rotating plate (4), and a shock absorbing structure is installed between the shock absorbing plate (5) and the rotating plate (4).

4. The main beam of the excavator slewing platform according to claim 3, characterized in that: A rotation driving groove (13) is provided in the inner limit member (12), and a driving member is installed in the rotation driving groove (13).

5. The main beam of the excavator slewing platform according to claim 4, characterized in that: The turntable (4) and the crossbeam (7) are an integrated structure.

6. The main beam of the excavator slewing platform according to claim 5, characterized in that: The rotating disk (4) and the limiting plate (8) on the crossbeam (7) and the surrounding limiting plate (6) are integrally formed.

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