CN216752687U - Lifting arm of large tractor - Google Patents
Lifting arm of large tractor Download PDFInfo
- Publication number
- CN216752687U CN216752687U CN202122907249.9U CN202122907249U CN216752687U CN 216752687 U CN216752687 U CN 216752687U CN 202122907249 U CN202122907249 U CN 202122907249U CN 216752687 U CN216752687 U CN 216752687U
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- oil cylinder
- arm
- integrally formed
- spline
- support arm
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Abstract
The utility model discloses a large tractor lifting arm, which comprises a spline connecting part, wherein a support arm connecting body is integrally formed on the spline connecting part, a downward bent oil cylinder crank arm is integrally formed on one side of the support arm connecting body, and an oil cylinder supporting part is integrally formed on the oil cylinder crank arm; the support arm connector is provided with an implement support arm which is integrally formed on the other side opposite to the oil cylinder crank arm, and the implement support arm is provided with an implement lifting part which is integrally formed. According to the utility model, the support arm of the oil cylinder support part is set as the crank arm, so that the oil cylinder crank arm can effectively reinforce the upper part of the oil cylinder support part when in use, and the upper part of the oil cylinder support part is not easy to deform, break and damage. The utility model also enhances the overall strength among the oil cylinder supporting part, the machine tool lifting part and the spline connecting part, reduces the local stress concentration, obviously improves the structural strength, reduces the damage rate and prolongs the service life through the arrangement of the thickening body and the arrangement of the reinforcing ribs.
Description
Technical Field
The utility model relates to a tractor lifting arm.
Background
The lifting arm is a main force transmission part for lifting and applying force to a tractor, and the lifting arm of a large tractor with a current 80-200 horsepower section is mainly made of cast steel in the market. The structure of the large tractor lifting arm generally comprises a spline connecting part in spline connection with a gearbox power distributor, a cylinder supporting part and an implement lifting part are integrally cast on the spline connecting part, and the cylinder supporting part and the implement lifting part are integrally formed into a fork-shaped arrangement, so that the large tractor lifting arms are generally used in pairs from left to right. In the use process of the large tractor lifting arm, the spline connecting part, the oil cylinder supporting part and the machine tool lifting part are stress concentration parts, and in addition, the steel casting material performance is limited, the probability of structural deformation and even breakage is high, so that the maintenance cost is increased, and the whole working efficiency is influenced. Therefore, the lift arm needs to be structurally optimized to prolong the service life and reduce the damage rate.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a large tractor lifting arm which has high structural strength, low damage rate and long service life.
In order to solve the technical problems, the technical scheme of the utility model is as follows: the lifting arm of the large tractor comprises a spline connecting part, wherein a support arm connecting body is integrally formed on the spline connecting part, a downward bent oil cylinder crank arm is integrally formed on one side of the support arm connecting body, and an oil cylinder supporting part is integrally formed on the oil cylinder crank arm; the support arm connector is provided with an implement support arm which is integrally formed on the other side opposite to the oil cylinder crank arm, and the implement support arm is provided with an implement lifting part which is integrally formed.
Preferably, the cylinder support part is integrally formed with a cylinder thickening body at an upper portion thereof.
Preferably, the upper part and the lower part of the machine lifting part are integrally formed with a machine thickening body.
As a preferable technical scheme, at least one spline reinforcing rib which is continuously arranged is arranged between the upper part and the lower part of the support arm connecting body and the periphery of the spline connecting part.
As the preferred technical scheme, the number of the spline reinforcing ribs is three, and one spline reinforcing rib extends to the lower part of the oil cylinder supporting part.
As a preferred technical scheme, the number of the spline reinforcing ribs is three, and two of the spline reinforcing ribs extend to the upper part of the machine tool lifting part.
Due to the adoption of the technical scheme, the support arm of the oil cylinder support part is arranged to be the crank arm, the oil cylinder crank arm can effectively reinforce the upper part of the oil cylinder support part when in use, and the upper part of the oil cylinder support part is not easy to deform, break and damage. The utility model also enhances the overall strength among the oil cylinder supporting part, the machine tool lifting part and the spline connecting part, reduces the local stress concentration, obviously improves the structural strength, reduces the damage rate and prolongs the service life through the arrangement of the thickening body and the arrangement of the reinforcing ribs.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein:
FIG. 1 is a schematic perspective view of an embodiment of the present invention;
fig. 2 is a schematic perspective view of another perspective view according to an embodiment of the present invention.
In the figure: 1-a spline connection; 11-spline reinforcing ribs; 2-a support arm connector; 3-oil cylinder crank arm; 4-an oil cylinder supporting part; 41-oil cylinder thickening body; 5-a machine support arm; 51-an implement lift section; 52-machine thickening body.
Detailed Description
The utility model is further illustrated below with reference to the figures and examples. In the following detailed description, exemplary embodiments of the utility model are described by way of illustration only. Needless to say, a person skilled in the art realizes that the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.
As shown in fig. 1 and 2, the lift arm of the large tractor comprises a spline connecting part 1, and the spline connecting part 1 is connected with a power divider of a gearbox through a spline in a known mode. The spline connecting part 1 is integrally formed with a support arm connecting body 2, one side of the support arm connecting body 2 is integrally formed with an oil cylinder crank arm 3 which is bent downwards, and the oil cylinder crank arm 3 is integrally formed with an oil cylinder supporting part 4. The bending arrangement of the oil cylinder crank arm 3 can provide powerful reinforcing support for the upper part of the oil cylinder supporting part 4, and can effectively avoid the problems of deformation and fracture of the upper part of the oil cylinder supporting part 4. An implement supporting arm 5 is integrally formed on the other side, opposite to the oil cylinder crank arm 3, of the supporting arm connecting body 2, and an implement lifting part 51 is integrally formed on the implement supporting arm 5.
Preferably, the cylinder thickening body 41 is integrally formed on the upper portion of the cylinder supporting portion 4, and the structural strength of the upper portion of the cylinder supporting portion 4 is further enhanced by the cylinder thickening body 41 on the basis of the reinforced support of the cylinder crank arm 3, so that the problems of deformation and fracture of the upper portion of the cylinder supporting portion 4 are further solved.
Preferably, the upper part and the lower part of the machine tool lifting part 51 are integrally formed with a machine tool thickening body 52, and the machine tool thickening body 52 and the oil cylinder thickening body 41 have the same principle, and the structural strength is improved by increasing the thickness of the easily deformable and breakable part, so that the problems of deformation and breakage are avoided.
Preferably, at least one spline reinforcing rib 11 is continuously arranged between the upper part and the lower part of the arm connecting body 2 and the periphery of the spline connecting part 1. Spline strengthening rib 11 cladding is in spline connection portion 1's periphery, it is right spline connection portion 1 plays the additional strengthening, just spline strengthening rib 11 sets up in succession the upper portion and the lower part of support arm connector 2 can make support arm connector 2 can assist bears spline connection portion 1's part atress is showing the reduction the stress concentration of spline connection portion 1 department effectively avoids 1 department of spline connection portion to warp and the fracture problem. Certainly, in the actual use process, the spline of the spline connecting portion 1 can also improve the deformation resistance and the fracture resistance of the spline by optimizing the modulus, the number of teeth, the displacement processing and the like, for example, the spline is subjected to modulus increase, the number of teeth reduction, positive displacement processing and the like.
In this embodiment, the number of the spline reinforcing ribs 11 is three, and one of the spline reinforcing ribs 11 extends to the lower portion of the cylinder support portion 4. This root spline strengthening rib 11 can form the structure to the lower part of hydro-cylinder supporting part 4 and strengthen on the one hand, can cooperate hydro-cylinder crank arm 3 and hydro-cylinder thickening body 41 further strengthen the structural strength of hydro-cylinder supporting part 4 department, on the other hand can with the atress of hydro-cylinder supporting part 4, the part is shared on hydro-cylinder crank arm 3 and support arm connector 2, the stress concentration of hydro-cylinder supporting part 4 department reduces, further avoids the deformation and the fracture problem of hydro-cylinder supporting part 4 department. Similarly, two of the spline reinforcing ribs 11 extend to the upper part of the machine tool lifting part 51. Also, the structural strength of the implement lift portion 51 may be increased while reducing stress concentrations at the implement lift portion 51, further avoiding deformation and breakage problems at the implement lift portion 51.
In the present embodiment, the "upper portion" and the "lower portion" are mainly used for convenience of description, and are defined as the upper portion and the lower portion of the lift arm in actual use.
This embodiment will the support arm of hydro-cylinder supporting part 4 sets up to the crank arm, and hydro-cylinder crank arm 3 can play effectual additional strengthening to the upper portion of hydro-cylinder supporting part 4 when using, and 4 upper portions of hydro-cylinder supporting part are difficult to take place to warp and fracture and damage. This embodiment still sets up and the strengthening rib setting through the thickening body, strengthens the bulk strength between hydro-cylinder supporting part 4, machines lifting part 51 and the spline connection portion 1 to reduce local stress concentration, show to improve this embodiment overall structure intensity, reduce the spoilage, increase of service life.
The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (6)
1. Large-scale tractor lift arm, including spline connection portion, its characterized in that: a support arm connecting body is integrally formed on the spline connecting part, an oil cylinder crank arm bent downwards is integrally formed on one side of the support arm connecting body, and an oil cylinder supporting part is integrally formed on the oil cylinder crank arm; the support arm connector is provided with an implement support arm which is integrally formed on the other side opposite to the oil cylinder crank arm, and the implement support arm is provided with an implement lifting part which is integrally formed.
2. The large tractor lift arm of claim 1, wherein: and an oil cylinder thickening body is integrally formed on the upper part of the oil cylinder supporting part.
3. The large tractor lift arm of claim 1, wherein: the upper part and the lower part of the machine tool lifting part are integrally formed with a machine tool thickening body.
4. The large tractor lift arm of claim 1, wherein: at least one spline reinforcing rib which is continuously arranged is arranged between the upper part and the lower part of the support arm connector and the periphery of the spline connecting part.
5. The large tractor lift arm of claim 4, wherein: the spline reinforcing ribs are three in number, and one spline reinforcing rib extends to the lower portion of the oil cylinder supporting portion.
6. The large tractor lift arm of claim 4, wherein: spline strengthening rib is equipped with three, and wherein two the spline strengthening rib extends to the upper portion setting of machines promotion portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122907249.9U CN216752687U (en) | 2021-11-25 | 2021-11-25 | Lifting arm of large tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122907249.9U CN216752687U (en) | 2021-11-25 | 2021-11-25 | Lifting arm of large tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216752687U true CN216752687U (en) | 2022-06-17 |
Family
ID=81963158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122907249.9U Active CN216752687U (en) | 2021-11-25 | 2021-11-25 | Lifting arm of large tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216752687U (en) |
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2021
- 2021-11-25 CN CN202122907249.9U patent/CN216752687U/en active Active
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