CN201801895U - Excavator and movable arm thereof - Google Patents
Excavator and movable arm thereof Download PDFInfo
- Publication number
- CN201801895U CN201801895U CN2010205443925U CN201020544392U CN201801895U CN 201801895 U CN201801895 U CN 201801895U CN 2010205443925 U CN2010205443925 U CN 2010205443925U CN 201020544392 U CN201020544392 U CN 201020544392U CN 201801895 U CN201801895 U CN 201801895U
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- Prior art keywords
- plate
- swing arm
- excavator
- movable arm
- turning
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- Expired - Fee Related
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Abstract
The utility model provides an excavator and a movable arm thereof, wherein the lower bottom surface from the tail part to the corner of the movable arm is a first plate; the lower bottom surface from the root to the corner of the movable arm is a second plate; the lower bottom surface of the corner of the movable arm is a third plate; and the second plate and the third plate are a whole plate integrally formed. As for the utility model, no weld joint exists on the lower bottom surface close to the root of the movable arm, so that lager stress can be borne, thus effectively avoiding cracking phenomenon, improving the strength of the movable arm and prolonging the service life of the movable arm.
Description
Technical field
The utility model relates to engineering machinery, particularly relates to a kind of excavator and swing arm thereof.
Background technology
Excavator is a kind of of engineering machinery, is widely used in engineering fields such as building, road, mine, and main effect is to carry out digging operation.
Fig. 1 is the shape assumption diagram of the excavator of prior art, as shown in the figure, the working portion of excavator, mainly comprise scraper bowl (bucket) 110, dipper (arm) 120 and swing arm (boom) 130, each parts is swung around pin joint under the effect of hydraulic cylinder, finish excavation, promote and unload actions such as soil, wherein the root 131 of swing arm 130 directly links to each other with the excavator body frame, the afterbody 132 of swing arm 130 links to each other with dipper 120, therefore swing arm 130 is total supports of whole working portion, it not only bears scraper bowl 110, the earth in the scraper bowl and the support force of dipper 120 also will provide himself support force, thus its to be subjected to force intensity be very big.
Fig. 2 is the swing arm of the excavator of prior art, and as shown in Figure 2, swing arm has afterbody 201 and root 202, and the centre of swing arm has a turning 203, so swing arm is the shape of a bending.The bottom surface of swing arm is welded by three block plates, is first steel plate 211 at afterbody 201 below turning 203, is second steel plate 212 at root 202 below turning 203, is the 3rd steel plate 213 below turning 203.
Therefore because the swing arm root is stressed very big, situation about ftractureing often appears in the weld seam between second steel plate 212 and the 3rd steel plate 213, has had a strong impact on the life-span of swing arm and the safety in utilization of excavator.
The utility model content
The purpose of the utility model embodiment provides a kind of excavator and swing arm thereof, can make the bottom surface near the swing arm root not have weld seam, can bear bigger stress, thereby effectively avoid cracking phenomena, has increased the intensity and the life-span of swing arm.
To achieve these goals, the utility model provides a kind of swing arm of excavator, and the swing arm afterbody is first plate to the bottom surface at swing arm turning, the swing arm root to described swing arm turning bottom surface be second plate, the bottom surface at described swing arm turning is the 3rd plate,
The monoblock sheet material that described second plate and described the 3rd plate are formed in one.
Preferably, in the above-mentioned swing arm, a described monoblock sheet material is steel plate.
Preferably, in the above-mentioned swing arm, between described monoblock sheet material and described first plate for being welded to connect.
The utility model also provides a kind of excavator, include swing arm, the swing arm afterbody is first plate to the bottom surface at swing arm turning, the swing arm root to described swing arm turning bottom surface be second plate, the bottom surface at described swing arm turning is the 3rd plate, the monoblock sheet material that described second plate and described the 3rd plate are formed in one.
Preferably, in the above-mentioned excavator, described sheet material is steel plate.
Preferably, in the above-mentioned excavator, between described monoblock sheet material and described first plate for being welded to connect.
There is following technique effect at least in the utility model embodiment:
1) second plate 312 of swing arm root and the 3rd plate 313 at swing arm turning are merged into a monoblock sheet material, make bottom surface not have weld seam near the swing arm root, can bear bigger stress, thereby effectively avoided cracking phenomena, increase the intensity and the life-span of swing arm, guaranteed the safety in utilization of excavator.
2) reduced weld seam, made more Jiamei's sight of product.
3) improved the safety in utilization of excavator, increased the competitiveness of product in EQUIPMENT MARKET GUIDE.
Description of drawings
Fig. 1 is the shape assumption diagram of the excavator of prior art;
Fig. 2 is the structure chart of existing excavator swing arm;
The structure chart of the excavator swing arm that Fig. 3 provides for the utility model embodiment.
The specific embodiment
For the purpose, technical scheme and the advantage that make the utility model embodiment is clearer, specific embodiment is described in detail below in conjunction with accompanying drawing.
The structure chart of the excavator swing arm that Fig. 3 provides for the utility model embodiment, as shown in Figure 3, swing arm afterbody 301 is first plate 311 to the bottom surface at swing arm turning 303, swing arm root 302 to described swing arm turning 303 bottom surfaces be second plate 312, the bottom surface at described swing arm turning 303 is the 3rd plate 313, wherein, the monoblock sheet material that is formed in one of described second plate 312 and described the 3rd plate 313.
Therefore, second plate 312 and the 3rd plate 313 are just in time near swing arm root 302, and be stressed very big, and do not have weld seam between second plate 312 and the 3rd plate 313, and can bear bigger stress, effectively avoided cracking phenomena, increase the intensity and the life-span of swing arm, guaranteed the safety in utilization of excavator.
Wherein, a described monoblock sheet material is steel plate.At this moment, the bending shape of the 3rd plate 313 of the bottom surface at turning 303 can bend and moulding by the end to a described monoblock sheet material.
Wherein, a described monoblock sheet material is cast iron.At this moment, the bending shape of the 3rd plate 313 of the bottom surface at turning 303 can pass through casting.Between described monoblock sheet material and described first plate 311 for being welded to connect.
The utility model embodiment also provides a kind of excavator, include swing arm, swing arm afterbody 301 is first plate 311 to the bottom surface at swing arm turning 303, swing arm root 302 to described swing arm turning 303 bottom surfaces be second plate 312, the bottom surface at described swing arm turning 303 is the 3rd plate 313, wherein, the monoblock sheet material that is formed in one of described second plate 312 and described the 3rd plate 313.Therefore, excavator embodiment of the present utility model is merged into one with two block plates of swing arm bottom, has avoided the commissure cracking phenomena effectively.
As from the foregoing, the utility model embodiment has following advantage:
1) second plate 312 of swing arm root and the 3rd plate 313 at swing arm turning are merged into a monoblock sheet material, make bottom surface not have weld seam near the swing arm root, can bear bigger stress, thereby effectively avoided cracking phenomena, increase the intensity and the life-span of swing arm, guaranteed the safety in utilization of excavator.
2) reduced weld seam, made more Jiamei's sight of product.
3) improved the safety in utilization of excavator, increased the competitiveness of product in EQUIPMENT MARKET GUIDE.
The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (6)
1. the swing arm of an excavator, the swing arm afterbody is first plate to the bottom surface at swing arm turning, the swing arm root to described swing arm turning bottom surface be second plate, the bottom surface at described swing arm turning is the 3rd plate, it is characterized in that,
The monoblock sheet material that described second plate and described the 3rd plate are formed in one.
2. swing arm according to claim 1 is characterized in that, a described monoblock sheet material is steel plate.
3. swing arm according to claim 1 is characterized in that, between described monoblock sheet material and described first plate for being welded to connect.
4. an excavator includes swing arm, and the swing arm afterbody is first plate to the bottom surface at swing arm turning, the swing arm root to described swing arm turning bottom surface be second plate, the bottom surface at described swing arm turning is the 3rd plate, it is characterized in that,
The monoblock sheet material that described second plate and described the 3rd plate are formed in one.
5. excavator according to claim 4 is characterized in that, described sheet material is steel plate.
6. excavator according to claim 4 is characterized in that, between described monoblock sheet material and described first plate for being welded to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205443925U CN201801895U (en) | 2010-09-27 | 2010-09-27 | Excavator and movable arm thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205443925U CN201801895U (en) | 2010-09-27 | 2010-09-27 | Excavator and movable arm thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201801895U true CN201801895U (en) | 2011-04-20 |
Family
ID=43871402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205443925U Expired - Fee Related CN201801895U (en) | 2010-09-27 | 2010-09-27 | Excavator and movable arm thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201801895U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103422520A (en) * | 2013-07-25 | 2013-12-04 | 三一重机有限公司 | Engineering machine and box-type working device thereof |
-
2010
- 2010-09-27 CN CN2010205443925U patent/CN201801895U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103422520A (en) * | 2013-07-25 | 2013-12-04 | 三一重机有限公司 | Engineering machine and box-type working device thereof |
| CN103422520B (en) * | 2013-07-25 | 2016-02-10 | 三一重机有限公司 | Engineering machinery and box equipment thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110420 Termination date: 20160927 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |