CN202370016U - Excavator boom - Google Patents
Excavator boom Download PDFInfo
- Publication number
- CN202370016U CN202370016U CN2011203092030U CN201120309203U CN202370016U CN 202370016 U CN202370016 U CN 202370016U CN 2011203092030 U CN2011203092030 U CN 2011203092030U CN 201120309203 U CN201120309203 U CN 201120309203U CN 202370016 U CN202370016 U CN 202370016U
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- Prior art keywords
- stiffener
- swing arm
- plate
- excavator
- fixed
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Abstract
The utility model provides an excavator boom which comprises a reinforcing plate structure that is equipped in a boom box body. The boom box body comprises a top plate, a bottom plate and two side plates. The reinforcing plate structure comprises the following components: a first reinforcing plate which is parallel and fixedly jointed with one side plate of the boom box body; a second reinforcing plate which is parallel and fixedly jointed with the other side plate of the boom box body; a connecting plate which is equipped between the first reinforcing plate and the second reinforcing plate, wherein the left side and the right side of the connecting plate are respectively connected with the first reinforcing plate and the second reinforcing plate fixedly. A structural cross section of each reinforcing plate is H-shaped. The excavator boom according to the utility model has the following functions: overcoming a defect of stress concentration, improving overall rigidity of the boom, preventing cracking failure, and prolonging service life of the boom.
Description
Technical field
The utility model relates to excavator, particularly a kind of excavator swing arm.
Background technology
Excavator is a kind of common engineering machinery, is widely used in engineering fields such as building, road, mine, and predominant use is to carry out digging operation.
Existing general excavator, its working portion mainly comprises scraper bowl, dipper and swing arm, under the effect of drive unit; Each parts is swung around pin joint, accomplishes actions such as excavating, promote and unload soil, and wherein the root of swing arm directly links to each other with the excavator main car frame; The afterbody of swing arm (or anterior) links to each other with dipper; Dipper then connects scraper bowl, so swing arm is total support of whole working portion, and it not only will provide the support force of material and dipper in scraper bowl, the scraper bowl; The support force of himself also will be provided, so it receives force intensity very big.
At present, excavator swing arm adopts body structure more, at box house; The meeting that has increases floor, to improve the rigidity of whole swing arm, improves the whole stressing conditions of swing arm; But at box house stiffener is set and tends to make swing arm in the course of the work, produce stress raisers, cause stiffener place swing arm side plate the cracking fault to occur at the correspondence position that is provided with stiffener; And floor is set often can not accomplishes that structure is reasonable fully, and the very variation of swing arm stressing conditions in the course of the work, this has just further strengthened and has produced the possibility that stress is concentrated; Cause the rigidity of swing arm not enough, the incidence of cracking fault is than higher.
In addition, in the prior art, the position of in swing arm, supporting is to strengthen at the inboard pasting board that increases of swing arm latus inframedium mostly, but its rigidity is still not ideal enough.
In light of this situation, the design people borrows its technical experience of association area and abundant professional knowledge for many years, and constantly research and development improve, and through a large amount of practical proofs, have proposed the technical scheme of the excavator swing arm of the utility model.
The utility model content
The purpose of the utility model is to provide a kind of excavator swing arm, can improve the defective that the swing arm internal stress is concentrated, and improves the integral rigidity of swing arm, the generation of the fault of avoiding ftractureing, thereby the application life of improving swing arm.
To achieve these goals; The utility model provides a kind of excavator swing arm, and wherein, said excavator swing arm comprises the stiffener structure; Said stiffener structure is arranged at the swing arm box house; Said swing arm casing comprises top board, base plate and biside plate, and said stiffener structure comprises: first stiffener, and parallel and be fixed in the wherein said side plate of said swing arm casing; Second stiffener, parallel and be fixed in another said side plate of said swing arm casing; Junction plate is arranged between said first stiffener and second stiffener, and the left and right sides of said junction plate is fixed in said first stiffener and second stiffener respectively; Said stiffener structure cross section is " H " shape.
Above-mentioned excavator swing arm, wherein, the bottom side of said first stiffener, said second stiffener and said junction plate is fixed in the base plate of said swing arm casing respectively.
Above-mentioned excavator swing arm, wherein, said first stiffener, said second stiffener and said junction plate and said swing arm box bottom are affixed for welding.
Above-mentioned excavator swing arm, wherein, said first stiffener is parallel with said second stiffener, and said junction plate is perpendicular to said first stiffener and said second stiffener.
Above-mentioned excavator swing arm, wherein, said first stiffener and said second stiffener vertically are provided with.
Above-mentioned excavator swing arm, wherein, said junction plate both sides are fixed in said first stiffener and the said second stiffener medium position respectively.
Above-mentioned excavator swing arm, wherein, said first stiffener and said second stiffener are oppositely arranged, and shape, big or small identical.
Above-mentioned excavator swing arm, wherein, said first stiffener and second stiffener and said biside plate are affixed for welding, and said junction plate and said first stiffener and second stiffener are affixed for welding.
Above-mentioned excavator swing arm, wherein, said excavator swing arm comprises the said stiffener structure of many groups, organizes said stiffener structure more and is set up in parallel in said swing arm box house.
Above-mentioned excavator swing arm, wherein, said excavator swing arm comprises one or more middle supporting stiffeners, said middle supporting stiffener and the middle support column outer wall of said excavator swing arm and the side plate and the base plate Joint of said swing arm casing.
Above-mentioned excavator swing arm; Wherein, said middle supporting stiffener is provided with to support in first in the stiffener, second and supports three of stiffeners in the supporting stiffener and the 3rd: supporting stiffener top side is fixed in said middle support column outer wall in said first, the bottom side is fixed in said base plate, the left and right sides and is fixed in said biside plate respectively; The bottom side of supporting stiffener is fixed in said middle support column outer wall in the supporting stiffener and the 3rd in said second, the left and right sides is fixed in said biside plate respectively; The bearing of trend of supporting stiffener is all through support column axis in said in said three.
Above-mentioned excavator swing arm, wherein, the middle support column outer wall of said middle supporting stiffener and said excavator swing arm and the side plate of said swing arm casing and base plate are affixed for welding.
From the above, the excavator swing arm of the utility model has advantage and characteristics:
1, the excavator swing arm of the utility model adopts the built-in stiffener of a kind of " H " shape structure, is welded on the diverse location of swing arm box house, plays booster action, has improved the rigidity of swing arm.
2, the excavator swing arm of the utility model has improved the problem that stiffener place stress is concentrated by " H " shape stiffener is set, and avoids the generation of side plate cracking fault, thus the application life of improving swing arm.
3, the built-in stiffener of " H " shape of the excavator swing arm of the utility model employing is simple in structure, convenient enforcement.
4, the excavator swing arm of the utility model supports stiffener in middle supporting place adds, and can further improve the rigidity of swing arm, improves the whole stressed of swing arm.
Description of drawings
Following accompanying drawing only is intended to the utility model is done schematic illustration and explanation, does not limit the scope of the utility model
Fig. 1 is the utility model excavator swing arm overall structure sketch map;
Fig. 2 is another angle overall structure sketch map of the utility model excavator swing arm;
Fig. 3 is the inner stiffener structural representation of the utility model excavator swing arm.
The critical element label declaration:
1 swing arm casing
11 top boards
12 base plates
13 side plates
2 stiffener structures
21 first stiffeners
22 second stiffeners
23 junction plates
Support column in 3
Support stiffener in 41 first
Support stiffener in 42 second
Support stiffener in 43 the 3rd
The specific embodiment
Understand for technical characterictic, purpose and effect to the utility model have more clearly, contrast the specific embodiment of description of drawings the utility model, but it is merely preferred embodiment, is not used for limiting the essential scope of the utility model at present.
Please combine with reference to figure 1, Fig. 2 and Fig. 3; Wherein Fig. 1 is the utility model excavator swing arm overall structure sketch map; Fig. 2 is another angle overall structure sketch map of the utility model excavator swing arm, and Fig. 3 is the inner stiffener structural representation of the utility model excavator swing arm, and is as shown in the figure; The excavator swing arm of the utility model is a body structure; Swing arm casing 1 includes top board 11, base plate 12 and biside plate 13 (be show internal structure, wherein side plate does not draw in the drawings), and above-mentioned each plate surrounds swing arm casing 1 jointly.Swing arm casing 1 set inside has stiffener structure 2, is used to improve the rigidity of swing arm, and stiffener structure 2 mainly comprises: first stiffener 21, and parallel and be fixed on the wherein side plate 13 of swing arm casing 1; Second stiffener 22; Parallel and be fixed on another side plate 13 of swing arm casing 1; Junction plate 23; Be arranged between first stiffener 21 and second stiffener 22, the left and right sides of said junction plate 23 is fixed in first stiffener 21 and second stiffener 22 respectively, thus the cross section of whole stiffener structure 2 is " H " shape.
In the present embodiment, swing arm casing 1 two side is vertical setting, and first stiffener 21 and second stiffener 22 also are vertically to be provided with, and the two is parallel, and first stiffener 21 and second stiffener 22 attach and be fixed in biside plate 13 respectively; Junction plate 23 vertically is located between first stiffener 21 and second stiffener 22; Its left and right sides is fixed in respectively on the plate face of first stiffener 21 and second stiffener 22; Junction plate 23 is respectively perpendicular to first stiffener 21 and second stiffener 22; The cross section of whole stiffener structure 2 is " H " shape can significantly be improved the whole rigidity of swing arm like this.Further preferred; First stiffener 21 can select for use shape identical with second stiffener 22, sheet material of the same size, and the two position is relative; Junction plate 23 both sides are fixed in the medium position of first stiffener 21 and second stiffener 22 respectively, thereby obtain best rigidity effect.It is affixed that the affixed mode of first stiffener 21 and second stiffener 22 and side plate 13 can be welding, and it is affixed that the affixed mode of the junction plate 23 and first stiffener 21 and second stiffener 22 also can be welding.
The bottom side of first stiffener 21, second stiffener 22 and junction plate 23 is fixed in the base plate 12 of swing arm casing 1 respectively; It is affixed that affixed mode can be welding; Thereby whole stiffener structure 2 just is fixedly arranged on the base plate 12; Be positioned at the inside of swing arm casing 1 simultaneously, preferably the height with side plate 13 is identical for the height of first stiffener 21, second stiffener 22 and junction plate 23.Encapsulate top board 11 then, make 1 sealing of swing arm casing, stiffener structure 2 is placed in swing arm casing 1 inside fully, plays the effect that improves the swing arm rigidity.
According to the needs of reality, stiffener structure 2 can be provided with many groups, organizes the inside that stiffener structure 2 all is arranged at swing arm casing 1 more, is set up in parallel, and its concrete structure those skilled in the art can know by inference according to the foregoing description easily, repeats no more at this.
In order further to strengthen the intensity of swing arm; Also can be in swing arm casing 1 inside support column 3 places be provided with and support stiffener in one or more; The side plate 13 and base plate 12 Joints of middle supporting stiffener and middle support column 3 outer walls and said swing arm casing 1, it is affixed that affixed mode may be selected to be welding.In the present embodiment; In the supporting stiffener be provided with three: supporting stiffener 43 in the supporting stiffener 42 and the 3rd in the supporting stiffener 41, second in first; Wherein, Support column 3 outer walls during supporting stiffener 41 top sides are fixed in first, the bottom side is fixed in base plate 12, and the left and right sides is fixed in biside plate 13 respectively; And support column 3 tops during supporting stiffener 43 is arranged in the supporting stiffener 42 and the 3rd in second, the bottom side of supporting stiffener 43 in second in the supporting stiffener 42 and the 3rd is fixed in the outer wall of middle support column 3, and the left and right sides then is fixed in biside plate 13 respectively.The equal axis through middle support column 3 of the bearing of trend of supporting stiffener is preferred in three, and supporting stiffener angle between any two is 120 to spend in three.The middle support column portion that can be swing arm like this provides inner support stress, further improves the rigidity of swing arm.
The above is merely the schematic specific embodiment of the utility model, is not in order to limit the scope of the utility model.Any those skilled in the art, equivalent variations of under the prerequisite of design that does not break away from the utility model and principle, having done and modification all should belong to the scope that the utility model is protected.
Claims (12)
1. an excavator swing arm is characterized in that, said excavator swing arm comprises the stiffener structure, and said stiffener structure is arranged at the swing arm box house, and said swing arm casing comprises top board, base plate and biside plate, and said stiffener structure comprises:
First stiffener, parallel and be fixed in the wherein said side plate of said swing arm casing;
Second stiffener, parallel and be fixed in another said side plate of said swing arm casing;
Junction plate is arranged between said first stiffener and second stiffener, and the left and right sides of said junction plate is fixed in said first stiffener and second stiffener respectively;
Said stiffener structure cross section is " H " shape.
2. excavator swing arm according to claim 1 is characterized in that, the bottom side of said first stiffener, said second stiffener and said junction plate is fixed in the base plate of said swing arm casing respectively.
3. excavator swing arm according to claim 2 is characterized in that, said first stiffener, said second stiffener and said junction plate and said swing arm box bottom are affixed for welding.
4. excavator swing arm according to claim 1 is characterized in that, said first stiffener is parallel with said second stiffener, and said junction plate is perpendicular to said first stiffener and said second stiffener.
5. excavator swing arm according to claim 4 is characterized in that, said first stiffener and said second stiffener vertically are provided with.
6. excavator swing arm according to claim 1 is characterized in that, said junction plate both sides are fixed in said first stiffener and the said second stiffener medium position respectively.
7. according to claim 1,2,3,4,5 or 6 described excavator swing arms, it is characterized in that said first stiffener and said second stiffener are oppositely arranged, and shape, big or small identical.
8. excavator swing arm according to claim 1 is characterized in that, said first stiffener and second stiffener and said biside plate are affixed for welding, and said junction plate and said first stiffener and second stiffener are affixed for welding.
9. excavator swing arm according to claim 1 is characterized in that, said excavator swing arm comprises the said stiffener structure of many groups, organizes said stiffener structure more and is set up in parallel in said swing arm box house.
10. excavator swing arm according to claim 1; It is characterized in that; Said excavator swing arm comprises one or more middle supporting stiffeners, said middle supporting stiffener and the middle support column outer wall of said excavator swing arm and the side plate and the base plate Joint of said swing arm casing.
11. excavator swing arm according to claim 10 is characterized in that, said middle supporting stiffener is provided with to support in first and supports three of stiffeners in the stiffener, second in the supporting stiffener and the 3rd:
Supporting stiffener top side is fixed in said middle support column outer wall in said first, the bottom side is fixed in said base plate, the left and right sides and is fixed in said biside plate respectively;
The bottom side of supporting stiffener is fixed in said middle support column outer wall in the supporting stiffener and the 3rd in said second, the left and right sides is fixed in said biside plate respectively;
The bearing of trend of supporting stiffener is all through support column axis in said in said three.
12., it is characterized in that the middle support column outer wall of said middle supporting stiffener and said excavator swing arm and the side plate of said swing arm casing and base plate are affixed for welding according to claim 10 or 11 described excavator swing arms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203092030U CN202370016U (en) | 2011-08-24 | 2011-08-24 | Excavator boom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203092030U CN202370016U (en) | 2011-08-24 | 2011-08-24 | Excavator boom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202370016U true CN202370016U (en) | 2012-08-08 |
Family
ID=46593725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203092030U Expired - Lifetime CN202370016U (en) | 2011-08-24 | 2011-08-24 | Excavator boom |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202370016U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102787618A (en) * | 2012-09-07 | 2012-11-21 | 三一重机有限公司 | Excavator bucket rod and excavator |
| CN104005435A (en) * | 2014-06-06 | 2014-08-27 | 山东中川液压有限公司 | Efficient energy-saving environment-friendly oil-hydraulic hybrid powder excavator |
| CN106948392A (en) * | 2013-06-28 | 2017-07-14 | 株式会社久保田 | The swing arm and working rig of working rig |
| CN109056862A (en) * | 2018-09-27 | 2018-12-21 | 景冲 | A kind of excavator swing arm |
| CN109339130A (en) * | 2018-11-02 | 2019-02-15 | 徐州徐工矿山机械有限公司 | A kind of reverse shovel grab swing arm |
| CN109972676A (en) * | 2019-05-05 | 2019-07-05 | 徐州徐工矿业机械有限公司 | A kind of heavy duty excavator swing arm |
| CN110785527A (en) * | 2018-01-26 | 2020-02-11 | 广西柳工机械股份有限公司 | Lifting device for wheel loader |
| WO2020211228A1 (en) * | 2019-04-16 | 2020-10-22 | 徐州徐工矿业机械有限公司 | Excavator boom and excavator |
-
2011
- 2011-08-24 CN CN2011203092030U patent/CN202370016U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102787618A (en) * | 2012-09-07 | 2012-11-21 | 三一重机有限公司 | Excavator bucket rod and excavator |
| CN106948392A (en) * | 2013-06-28 | 2017-07-14 | 株式会社久保田 | The swing arm and working rig of working rig |
| US10190284B2 (en) | 2013-06-28 | 2019-01-29 | Kubota Corporation | Boom for a working machine with a partition inside the boom |
| CN104005435A (en) * | 2014-06-06 | 2014-08-27 | 山东中川液压有限公司 | Efficient energy-saving environment-friendly oil-hydraulic hybrid powder excavator |
| CN104005435B (en) * | 2014-06-06 | 2016-12-07 | 山东中川液压有限公司 | A kind of high-efficient energy-saving environment friendly oil-liquid hybrid electric excavator |
| CN110785527A (en) * | 2018-01-26 | 2020-02-11 | 广西柳工机械股份有限公司 | Lifting device for wheel loader |
| CN109056862A (en) * | 2018-09-27 | 2018-12-21 | 景冲 | A kind of excavator swing arm |
| CN109056862B (en) * | 2018-09-27 | 2021-05-07 | 景冲 | Movable arm of excavator |
| CN109339130A (en) * | 2018-11-02 | 2019-02-15 | 徐州徐工矿山机械有限公司 | A kind of reverse shovel grab swing arm |
| CN109339130B (en) * | 2018-11-02 | 2023-11-10 | 徐州徐工矿业机械有限公司 | Backhoe type excavator movable arm |
| WO2020211228A1 (en) * | 2019-04-16 | 2020-10-22 | 徐州徐工矿业机械有限公司 | Excavator boom and excavator |
| CN109972676A (en) * | 2019-05-05 | 2019-07-05 | 徐州徐工矿业机械有限公司 | A kind of heavy duty excavator swing arm |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120808 |