CN217734144U - Crank arm structure of loader - Google Patents
Crank arm structure of loader Download PDFInfo
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- CN217734144U CN217734144U CN202221279661.9U CN202221279661U CN217734144U CN 217734144 U CN217734144 U CN 217734144U CN 202221279661 U CN202221279661 U CN 202221279661U CN 217734144 U CN217734144 U CN 217734144U
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Abstract
The utility model discloses a loader crank arm structure, including big arm, the one end and the fore-stock of big arm rotate to be connected, the other end of big arm rotates with the lower articulated frame of scraper bowl to be connected, one side that the rotation junction of big arm and fore-stock is close to the big arm other end is equipped with big arm drive connecting piece, be equipped with big arm actuating mechanism between big arm drive connecting piece and the fore-stock, big arm actuating mechanism rotates with fore-stock and big arm drive connecting piece respectively and is connected, big arm is the S type, and just one side that the big arm middle part is close to the fore-stock is upwards protruding, and one side that the big arm middle part is close to the scraper bowl is protruding downwards. The big arm is in an S-shaped bent design, the installation space of the big arm driving mechanism is increased, the driving stroke of the big arm driving mechanism can be increased, and the adjustable height range of the bucket is increased.
Description
Technical Field
The utility model relates to a loader technical field, especially a loader crank arm structure.
Background
At present, the crank arm structural design of the bucket of most loaders is not reasonable enough, and the large arm is mostly of a straight structure, so that the installation space of a large arm driving mechanism is limited, the moving range of the large arm is limited, and the adjusting range of the bucket is limited.
SUMMERY OF THE UTILITY MODEL
The problem of the crank arm structural design who exists reasonable inadequately among the solution prior art, further optimize the crank arm structure, the utility model provides a loader crank arm structure.
The utility model adopts the technical proposal that:
the utility model provides a loader crank arm structure, includes big arm, the one end and the preceding frame of big arm rotate to be connected, the other end of big arm rotates with the lower articulated frame of scraper bowl to be connected, the rotation junction of big arm and preceding frame is equipped with big arm drive connecting piece near one side of the big arm other end, be equipped with big arm actuating mechanism between big arm drive connecting piece and the preceding frame, big arm actuating mechanism rotates with preceding frame and big arm drive connecting piece respectively and is connected, big arm is the S type, and just one side that big arm middle part is close to the preceding frame is upwards protruding, and one side that big arm middle part is close to the scraper bowl is protruding downwards.
Preferably, the two large arms are arranged oppositely, a small arm mounting seat is arranged between the middle parts of the two large arms, and the small arm mounting seat is rotatably connected with the middle part of the small arm.
Preferably, the large arm driving connecting piece is in the shape of an isosceles triangle, two corners of the large arm driving connecting piece are fixedly connected with the large arm respectively, and the other corner of the large arm driving connecting piece is rotatably connected with the large arm driving mechanism.
Preferably, the large arm driving mechanism is a pneumatic cylinder or a hydraulic cylinder.
The utility model has the advantages that:
the big arm is in an S-shaped bent design, the installation space of the big arm driving mechanism is increased, the driving stroke of the big arm driving mechanism can be increased, and the adjustable height range of the bucket is increased.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
reference numerals: 1. the excavator comprises a front frame, 2, a rear frame, 3, a bucket, 4, an upper hinged frame, 5, a lower hinged frame, 6, a large arm, 7, a small arm, 8, a large arm driving connecting piece, 9, a large arm driving mechanism, 10, a small arm driving mechanism, 11, a connecting rod, 12, a small arm mounting seat, 13 and a driver.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Examples
As shown in fig. 1, a curved arm structure of a loader, which is mainly used for a loader, and therefore will be described later from the perspective of the whole loader, includes a front frame 1, a rear frame 2, a steering mechanism connecting the front frame 1 and the rear frame 2, and a bucket 3 disposed on the front frame 1, wherein the bucket 3 is connected to the front frame 1 through a double-curved-arm mechanism, an upper hinge frame 4 is disposed on the upper portion of the outer side of the back plate of the bucket 3, a lower hinge frame 5 is disposed on the lower portion of the outer side of the back plate of the bucket 3, the double-curved-arm mechanism includes a large arm 6 and a small arm 7, one end of the large arm 6 is rotatably connected to the front frame 1, the other end of the large arm 6 is rotatably connected to the lower hinge frame 5, a large arm driving connecting member 8 is disposed on the side of the rotational connection between the large arm 6 and the front frame 1, a large arm driving mechanism 9 is disposed between the large arm driving connecting member 8 and the front frame 1, the large arm driving mechanism 9 is rotatably connected to the large arm driving connecting member 1 and the large arm driving connecting member 8, the small arm driving mechanism 7 is rotatably connected to the small arm driving member 7, the small arm driving mechanism 11 is disposed on the large arm connecting member 7, and the small arm driving mechanism 10 is connected to the small arm driving member 7, and the small arm driving mechanism 11 is connected to the large arm driving mechanism 7.
When the loader operates the bucket 3, one end of the big arm 6 is pushed and pulled through the big arm driving mechanism 9, the big arm 6 rotates around the rotating connection part of the big arm and the front frame 1 as the center, so that the height of the other end of the big arm 6 is changed, the height of the bucket 3 is adjusted, one end of the small arm 7 is pushed and pulled through the small arm driving mechanism 10, the small arm 7 rotates around the rotating connection part of the small arm and the big arm 6 as the center, the height of the other end of the small arm 7 is changed, and the angle of the bucket 3 relative to the big arm 6 is changed under the matching of the big arm 6. The utility model discloses on locating big arm 6 with forearm actuating mechanism 10, not only required installation space diminishes, makes things convenient for the overall arrangement installation, makes overall structure more succinct, compares in the traditional mounting means with forearm actuating mechanism 10 direct mount in the front of the frame 1, the utility model discloses make forearm actuating mechanism 10 miniaturized under the condition that does not reduce the angle of rotation of forearm 7 and be the angle control range of scraper bowl 3, radial bearing capacity improves.
In one embodiment, the large arm 6 is S-shaped, and the side of the middle part of the large arm 6 near the front frame 1 is convex upward, and the side of the middle part of the large arm 6 near the bucket 3 is convex downward.
The boom 6 is designed to be S-shaped bent, so that the installation space of the boom driving mechanism 9 is increased, that is, the driving stroke of the boom driving mechanism 9 can be increased, and the adjustable height range of the bucket 3 is increased.
In one embodiment, the small arm 7 is arc-shaped, and the concave side of the small arm 7 faces the large arm 6.
Compare in the forearm 7 of straight rod type, when curved forearm 7 rotated, its whole required home range was less, was difficult for taking place the condition that probably collides with scraper bowl 3.
In one embodiment, two large arms 6 are oppositely arranged, a small arm mounting seat 12 is arranged between the middle parts of the two large arms 6, and the middle part of the small arm 7 is rotatably connected with the small arm mounting seat 12.
The installation of the small arm 7 can be facilitated through the small arm installation seat 12, the small arm installation seat 12 can comprise an installation rod arranged between the two large arms 6, and the installation rod penetrates through the small arm 7 and is connected with the small arm in a rotating mode.
In one embodiment, two small arms 7 are oppositely arranged, and two small arms 7 are arranged between two large arms 6.
The small arms 7 and the large arms 6 can be correspondingly arranged in two, the combination of the two large arms 6 and the two small arms 7 enables stress to be more balanced, and the bucket 3 can run more stably.
In one embodiment, the large arm driving connecting part 8 is in the shape of an isosceles triangle, wherein two corners of the isosceles triangle are fixedly connected with the large arm 6 respectively, and the other corner of the isosceles triangle is rotatably connected with the large arm driving mechanism 9.
The large arm driving connecting piece 8 is in an isosceles triangle shape, three angles are respectively connected with the large arm 6 and the large arm driving mechanism 9, so that two parts of the large arm 6 are stressed, the large arm driving mechanism 9 drives the large arm 6 more stably, the large arm driving mechanism 9 can be selected properly, when the bucket 3 is at a low-position initial position, a central line corresponding to one angle, where the large arm driving connecting piece 8 is connected with the large arm driving mechanism 9, is coaxial with the large arm driving mechanism 9, and the radial load of the large arm driving mechanism 9 is reduced.
In one embodiment, the large arm driving mechanism 9 and the small arm driving mechanism 10 are air cylinders or hydraulic cylinders.
In one embodiment, the steering mechanism comprises two drivers 13, the front frame 1 is rotatably connected with the middle part of the opposite side of the rear frame 2, the two drivers 13 are horizontally and symmetrically arranged at the rotating connection part of the front frame 1 and the rear frame 2, the drivers 13 are air cylinders or hydraulic cylinders, and two ends of the drivers 13 are respectively rotatably connected with the front frame 1 and the rear frame 2.
The angle between the front frame 1 and the rear frame 2 can be changed by pushing and pulling the two drivers 13, and the device has a simple structure and is convenient to operate.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (4)
1. The utility model provides a loader crank arm structure, includes big arm (6), its characterized in that, the one end and the front frame (1) of big arm (6) are rotated and are connected, the other end of big arm (6) rotates with lower articulated frame (5) of scraper bowl (3) and is connected, big arm (6) are equipped with big arm drive connecting piece (8) with one side that the rotation junction of front frame (1) is close to big arm (6) other end, be equipped with big arm actuating mechanism (9) between big arm drive connecting piece (8) and front frame (1), big arm actuating mechanism (9) rotate with front frame (1) and big arm drive connecting piece (8) respectively and are connected, big arm (6) are the S type, and just one side that big arm (6) middle part is close to front frame (1) upwards protruding, and one side that big arm (6) middle part is close to scraper bowl (3) is protruding downwards.
2. The curved arm structure of the loader as claimed in claim 1, wherein there are two opposite large arms (6), a small arm mounting seat (12) is provided between the middle parts of the two large arms (6), and the small arm mounting seat (12) is rotatably connected with the middle part of the small arm (7).
3. The curved arm structure of the loader as claimed in claim 2, wherein the large arm driving connecting piece (8) is in the shape of an isosceles triangle, two corners of the isosceles triangle are respectively and fixedly connected with the large arm (6), and the other corner of the isosceles triangle is rotatably connected with the large arm driving mechanism (9).
4. A loader crank arm structure according to claim 3 wherein the big arm drive mechanism (9) is a pneumatic or hydraulic cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221279661.9U CN217734144U (en) | 2022-05-25 | 2022-05-25 | Crank arm structure of loader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221279661.9U CN217734144U (en) | 2022-05-25 | 2022-05-25 | Crank arm structure of loader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217734144U true CN217734144U (en) | 2022-11-04 |
Family
ID=83837718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221279661.9U Active CN217734144U (en) | 2022-05-25 | 2022-05-25 | Crank arm structure of loader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217734144U (en) |
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2022
- 2022-05-25 CN CN202221279661.9U patent/CN217734144U/en active Active
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