CN220580072U - Swing arm for reinforced excavator - Google Patents
Swing arm for reinforced excavator Download PDFInfo
- Publication number
- CN220580072U CN220580072U CN202321981799.8U CN202321981799U CN220580072U CN 220580072 U CN220580072 U CN 220580072U CN 202321981799 U CN202321981799 U CN 202321981799U CN 220580072 U CN220580072 U CN 220580072U
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- CN
- China
- Prior art keywords
- movable arm
- oil cylinder
- fixed pipe
- flitch
- bucket rod
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- 238000003466 welding Methods 0.000 claims description 19
- 230000003014 reinforcing effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- Operation Control Of Excavators (AREA)
Abstract
The utility model discloses a movable arm for a reinforced excavator, belongs to the field of excavator connecting pieces, and solves the problems that a movable arm side plate in the movable arm of the excavator is easy to crack and the service life of the movable arm is shortened in the prior art. The movable arm type hydraulic lifting device mainly comprises a movable arm body, a fixed pipe is arranged on the movable arm body, a flitch I is fixedly arranged at two ends of the movable arm body, a flitch II and a fixed pipe are arranged at the middle position of the movable arm body, a hole is formed in the flitch II and penetrates through the fixed pipe, the flitch II is fixedly welded with the fixed pipe, an ear plate is arranged on the fixed pipe, the ear plate comprises a movable arm oil cylinder ear plate and a bucket rod oil cylinder ear plate, the movable arm oil cylinder ear plate is connected with a movable arm oil cylinder, and the bucket rod oil cylinder ear plate is connected with a bucket rod oil cylinder. The utility model mainly adopts the reinforcing flitch and the adjusting connection mode, can strengthen the structural strength of the movable arm, and effectively improves the stress concentration phenomenon, thereby prolonging the service life of the movable arm.
Description
Technical Field
The present utility model relates to an excavator connecting piece, and more particularly, to a boom for a reinforced excavator.
Background
The movable arm is used as an important part of the excavator and is hinged with a connecting lug plate on the rotary platform, the movable arm is supported by a movable arm oil cylinder, and the movable arm can rotate around a lower hinge point to lift by changing the stroke of the oil cylinder, so that the stress condition of the movable arm is complex, stronger supporting strength is required, and the requirement on a mechanical structure is higher.
The stress condition is complex in the working process of the movable arm, stronger supporting strength is needed, and the requirement on a mechanical structure is higher. The existing movable arm of the excavator often adopts a box-shaped structure formed by splicing and welding multiple plates, stress concentration is easy to occur, and a movable arm side plate in the movable arm of the excavator is easy to crack under the action of load, particularly under the action of load with very high intensity such as earthwork, so that the service life of the movable arm is shortened. The flitch described in the boom disclosed in the enhanced excavator boom of the public number CN201120270372.8 is not stable enough, is complex in structure, and has no consolidation means at the connection with the arm cylinder and the boom cylinder. The movable arm structure strength can be enhanced and the stress concentration phenomenon can be effectively improved by increasing the reinforcing flitch at the position where stress concentration is easy to occur and adjusting the welding process through larger stress on the hinge points of the movable arm, the rotation and the oil cylinder, so that the service life of the movable arm is prolonged.
Disclosure of Invention
The utility model aims to provide a reinforced movable arm for an excavator, which aims to solve the problem that a movable arm side plate in the movable arm of the excavator in the prior art is easy to crack, so that the service life of the movable arm is shortened.
The utility model is realized by the following technical scheme:
the utility model provides a swing arm for strenghthened type excavator, includes the swing arm body, be equipped with fixed pipe on the swing arm body, swing arm body both ends are all fixed to be equipped with flitch I, and swing arm body intermediate position is equipped with flitch II and fixed pipe, trompil and pass fixed pipe on the flitch II, flitch II and fixed pipe welded fastening, fixed pipe on be equipped with the otic placode, the otic placode includes swing arm hydro-cylinder otic placode and arm hydro-cylinder otic placode, swing arm hydro-cylinder otic placode is connected the swing arm hydro-cylinder, arm hydro-cylinder otic placode is connected the arm hydro-cylinder.
Further, welding holes are formed in the flitch I, and the number of the welding holes is three.
Further, the number of the fixed pipes is two, one fixed pipe is provided with a movable arm oil cylinder lug plate, and the other fixed pipe is provided with a bucket rod oil cylinder lug plate.
Further, the number of the bucket rod oil cylinder lug plates is two, the two bucket rod oil cylinder lug plates are arranged on the fixed pipe front and back, the bucket rod oil cylinder lug plates are provided with connecting holes, and the bucket rod oil cylinder lug plates are rotationally connected with the bucket rod oil cylinder through the connecting holes.
Further, the number of the movable arm oil cylinder lug plates is two, the two movable arm oil cylinder lug plates are arranged on the fixed pipe in a front-back mode, connecting holes are formed in the movable arm oil cylinder lug plates, and the movable arm oil cylinder lug plates are connected with the movable arm oil cylinder in a rotating mode through the connecting holes.
Further, the movable arm oil cylinder lug plate penetrates through and is welded on the fixed pipe.
Further, the number of the lug plates of the bucket rod oil cylinder is two, the lug plates of the bucket rod oil cylinder are arranged on the fixed pipe front and back, the lug plates of the bucket rod oil cylinder are provided with connecting holes, and the lug plates of the bucket rod oil cylinder are rotationally connected with the bucket rod oil cylinder through the connecting holes.
Further, the lug plate of the bucket rod oil cylinder penetrates through and is welded on the fixed pipe.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the utility model, the flitch is added to the positions with larger stress such as the hinge point of the movable arm to ensure the structural strength of the movable arm, so that the stress concentration phenomenon is effectively improved, and the structure strength of the movable arm is higher and more durable; through the mode to movable arm box side welding flitch, guarantee that box structural strength is higher, can effectively prevent the emergence of trouble such as curb plate fracture.
2. In the utility model, the pasting board I is provided with three welding holes, and the welding holes are internally welded by circumference, so that the welding area can be increased, and the structural strength of the movable arm can be improved.
3. According to the utility model, the mode of penetrating and welding the lug plate and the fixed pipe is adopted, so that the fixed strength between the lug plate and the fixed pipe is enhanced; the mode of opening holes in the lug plates is adopted to be hinged with the movable arm oil cylinder and the bucket rod oil cylinder, so that the structural strength of the hinged position of the movable arm oil cylinder and the bucket rod oil cylinder is ensured.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is an enlarged view of the portion a of the present utility model.
In the figure: 1. a boom body; 2. a flitch I; 3. a movable arm oil cylinder lug plate; 4. bucket rod oil cylinder lug plate; 5. a flitch II; 6. welding holes; 7. the tube is fixed.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
The embodiment 1, a boom for a reinforced excavator, as shown in fig. 1, includes a boom body 1, a fixed pipe 7 is provided on the boom body 1, a flitch i 2 is welded on the outside of the hinge position of the front end of the boom body 1 and the rotating platform, the welding position is bilaterally symmetrical, a flitch i 2 is welded on the outside of the hinge position of the rear end of the boom body 1 and the bucket rod, and the welding position is bilaterally symmetrical; the flitch II 5 is welded outside the middle position of the movable arm body 1, the flitch II 5 is welded with the fixed pipes 7, two fixed pipes 7 are arranged on the movable arm body 1, the two fixed pipes 7 are all perforated and penetrate through the flitch II 5, the fixed pipes 7 are provided with lug plates, each lug plate comprises a movable arm oil cylinder lug plate 3 and a bucket rod oil cylinder lug plate 4, one fixed pipe 7 is provided with the movable arm oil cylinder lug plate 3, the other fixed pipe 7 is provided with the bucket rod oil cylinder lug plate 4, the movable arm oil cylinder is connected with the movable arm oil cylinder by the movable arm oil cylinder lug plate 3, and the bucket rod oil cylinder is connected with the bucket rod oil cylinder by the bucket rod oil cylinder lug plate 4.
In the embodiment 2, as shown in fig. 2, welding holes 6 are formed in the flitch i 2, the number of the welding holes 6 is three, and the inner circumferences of the welding holes 6 are welded to increase the welding area and the structural strength of the movable arm; the number of the fixed pipes is two, one fixed pipe is provided with a movable arm oil cylinder lug plate, and the other fixed pipe is provided with a bucket rod oil cylinder lug plate; the movable arm oil cylinder lug plates 3 are provided with two movable arm oil cylinder lug plates 3, the two movable arm oil cylinder lug plates 3 penetrate through and are welded on the fixed pipe 7, the penetrating welding mode is higher in strength than the bonding welding mode, the fixing strength is effectively enhanced, the movable arm oil cylinder lug plates 3 are provided with connecting holes, and the movable arm oil cylinder lug plates 3 are rotationally connected with the movable arm oil cylinder through the connecting holes; the two bucket rod oil cylinder lug plates 4 are arranged on the bucket rod oil cylinder lug plates 4, the two bucket rod oil cylinder lug plates 4 penetrate through and are welded on the fixed pipe 7, the bucket rod oil cylinder lug plates 4 are provided with connecting holes, and the bucket rod oil cylinder lug plates 4 are rotationally connected with the bucket rod oil cylinder through the connecting holes; the number of the fixed pipes 7 is two. The other steps are the same as in example 1.
Through the positions of the movable arm body 1, the hinge points of the rotary platform and the bucket rod oil cylinder and the like, which are stressed greatly and are easy to generate stress concentration, the reinforcing flitch is added, the connecting mode is adjusted, the structural strength of the movable arm can be enhanced, the stress concentration phenomenon is effectively improved, and the service life of the movable arm is prolonged.
Claims (7)
1. The utility model provides a strenghthened type is movable arm for excavator, includes movable arm body (1), be equipped with fixed pipe (7), its characterized in that on movable arm body (1): the movable arm body (1) both ends are all fixed be equipped with flitch I (2), and movable arm body (1) intermediate position is equipped with flitch II (5) and fixed pipe (7), trompil and pass fixed pipe (7) on flitch II (5), flitch II (5) and fixed pipe (7) welded fastening, fixed pipe (7) on be equipped with the otic placode, the otic placode includes movable arm hydro-cylinder otic placode (3) and arm hydro-cylinder otic placode (4), movable arm hydro-cylinder is connected to movable arm hydro-cylinder otic placode (3), arm hydro-cylinder otic placode (4) are connected the arm hydro-cylinder.
2. The boom for a reinforced excavator according to claim 1, wherein: and the flitch I (2) is provided with a welding hole (6).
3. The boom for a reinforced excavator according to claim 1, wherein: the number of the fixed pipes (7) is two, one fixed pipe (7) is provided with a movable arm oil cylinder lug plate (3), and the other fixed pipe (7) is provided with a bucket rod oil cylinder lug plate (4).
4. The boom for a reinforced excavator according to claim 3, wherein: the movable arm oil cylinder lug plates (3) are arranged in number, the movable arm oil cylinder lug plates (3) are arranged on the fixed pipe (7) front and back, connecting holes are formed in the movable arm oil cylinder lug plates (3), and the movable arm oil cylinder lug plates (3) are connected with the movable arm oil cylinder in a rotating mode through the connecting holes.
5. The boom for a reinforced excavator according to claim 4, wherein: the movable arm oil cylinder lug plate (3) penetrates through and is welded on the fixed pipe (7).
6. The boom for a reinforced excavator according to claim 3, wherein: the number of the bucket rod oil cylinder lug plates (4) is two, the two bucket rod oil cylinder lug plates (4) are arranged on the fixed pipe (7) front and back, the bucket rod oil cylinder lug plates (4) are provided with connecting holes, and the bucket rod oil cylinder lug plates (4) are rotationally connected with the bucket rod oil cylinder through the connecting holes.
7. The boom for a reinforced excavator according to claim 6, wherein: the bucket rod oil cylinder lug plate (4) penetrates through and is welded on the fixed pipe (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321981799.8U CN220580072U (en) | 2023-07-26 | 2023-07-26 | Swing arm for reinforced excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321981799.8U CN220580072U (en) | 2023-07-26 | 2023-07-26 | Swing arm for reinforced excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220580072U true CN220580072U (en) | 2024-03-12 |
Family
ID=90120358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321981799.8U Active CN220580072U (en) | 2023-07-26 | 2023-07-26 | Swing arm for reinforced excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220580072U (en) |
-
2023
- 2023-07-26 CN CN202321981799.8U patent/CN220580072U/en active Active
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| GR01 | Patent grant |