CN102312459A - Special-shaped pipe bottom plate for turntable of excavator - Google Patents
Special-shaped pipe bottom plate for turntable of excavator Download PDFInfo
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- CN102312459A CN102312459A CN201110189740A CN201110189740A CN102312459A CN 102312459 A CN102312459 A CN 102312459A CN 201110189740 A CN201110189740 A CN 201110189740A CN 201110189740 A CN201110189740 A CN 201110189740A CN 102312459 A CN102312459 A CN 102312459A
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Abstract
The invention relates to a special-shaped pipe bottom plate for a turntable of an excavator, which is characterized in that the bottom plate is a straight pipe, the cross section of the straight pipe comprises a lower side, a top side, a straight lateral side and a curved lateral side, and the lower side, the top side, the straight lateral side and the curved lateral side are sequentially connected to form a special-shaped trapezoid, wherein an included angle between the lower side and the straight lateral side is basically 90 degrees, an included angle between the straight lateral side and the top side is basically 90 degrees, the length of the lower side is 1.5-2 times of the length of the top side, the length of the straight lateral side is equal to the length of the top side, the curved lateral side comprises a linear section and a circular-arc section, the linear section is connected with the top side, the circular-arc section is connected with the lower side, the radius of the circular-arc section is smaller than half of the length of the lower side; and a lower plate corresponding to the lower side and a top plate corresponding to the top side are made of No.45 steel, and a straight lateral plate corresponding to the straight lateral side and a curved lateral plate corresponding to the curved lateral side are made of low-carbon alloy steel.
Description
Technical field
The present invention relates to a kind of special-purpose member of excavator turntable, relate in particular to a kind of new-type shape tube base plate that is used for the excavator turntable.
Background technology
At present, the turntable base plate of hydraulic crawler excavator adopts plate cutting more on the market, and bending and molding is made then, complex process, and technological parameter is not easy to guarantee.Because of the left and right support of excavator turntable mainly is made up of key component base plate and other plate welding, cause the welding quality of whole turntable also wayward.Light then influence the operating accuracy and the operating efficiency of excavator, heavy then bring potential safety hazard, jeopardize construction safety and personal safety.
Summary of the invention
To above-mentioned situation, the present invention proposes a kind of shape tube base plate that is used for the excavator turntable, it is characterized in that: said base plate is a straight tube; The cross section of said straight tube comprises bottom, top margin, straight sided and curvilinear; Bottom, top margin, straight sided and curvilinear link to each other successively and surround special-shaped trapezoidal shape, and wherein following angle with straight sided is 90 degree basically, and the angle of straight sided and top margin is 90 degree basically; Following length is 1.5～2 times of top margin length; Straight sided length is identical with top margin length, and curvilinear comprises continuous straightway and arc section, and said straightway connects top margin; Said arc section connects following, and the radius of arc section is half the less than following edge lengths; Said following corresponding lower plate and the corresponding top board of said top margin are processed by the 45# steel, and the corresponding curve side plate of front plate that said straight sided is corresponding and said curvilinear is processed by low-carbon alloy steel.
Wherein said straightway and arc section are tangent.
One end of wherein said base plate is the inclined-plane.
The invention has the advantages that:
1, changes existing forming board structure into the special pipe structure, improved intensity, simplified the production process of turntable;
2, reduce cost of production, improved production efficiency, can improve the intensity and the durability of the whole turntable that welding forms on the whole;
3, improve the structure of whole turntable, can protect external damage better, and can suppress the vibration of driver's cabin better, improved the complete machine service behaviour and the reliability of hydraulic crawler excavator.
Description of drawings
Accompanying drawing 1 is the board-like turntable base plate sketch map of former shaping;
Accompanying drawing 2 is the turntable base plate sketch map of the present invention's abnormity tubular type;
Accompanying drawing 3 is the turntable base plate elevation of the present invention's abnormity tubular type;
Accompanying drawing 4 is that the turntable base plate B-B of special-shaped tubular type in the accompanying drawing 3 is to generalized section.
Reference numeral is following:
1-is following; The 2-straight sided; The 3-top margin; The 4-straightway; The 5-arc section.
The specific embodiment
Referring to accompanying drawing 2-4, a kind of according to the preferred embodiment that is used for the shape tube base plate of excavator turntable of the present invention.Said base plate is a straight tube structure, and the cross section of straight tube is made up of four edges, comprises bottom, top margin, straight sided and curvilinear; Bottom, top margin, straight sided and curvilinear link to each other successively and surround special-shaped trapezoidal shape, and wherein following angle with straight sided is 90 degree basically, and the angle of straight sided and top margin is 90 degree basically; Following length is 1.5～2 times of top margin length, and straight sided length is identical with top margin length, and curvilinear comprises continuous straightway and arc section; Said straightway connects top margin, and said arc section connects following, and the radius of arc section is half the less than base length; The corresponding respectively four sides plate that surrounds special-shaped straight tube of four edges; Following corresponding lower plate, the corresponding top board of top margin, the corresponding front plate of straight sided, the corresponding curve side plate of curvilinear, for adapting to different stressing conditions, the four sides plate can be made from a variety of materials; Preferred lower plate and top board are processed by the 45# steel; Front plate and curve side plate are processed by low-carbon alloy steel (for example 20CrMnSi, 15CrMo etc.), and its connection can be used welding, also can satisfy the connected mode of working strength with other.
For better regulating the stressing conditions of base plate, straightway takes tangent mode to be connected with arc section, prevents the stress accumulation.Adding man-hour, can also an end of base plate be processed as the inclined-plane, the angle of inclination is generally 45 degree, is convenient to depositing of base plate and being connected of a plurality of base plates.
The above; Be merely the preferable specific embodiment of patent of the present invention; But the protection domain of patent of the present invention is not limited thereto; Any technician who is familiar with the present technique field is in the technical scope that patent of the present invention discloses, and the variation that can expect easily or replacement all should be encompassed within the protection domain of patent of the present invention.
Claims (3)
1. shape tube base plate that is used for the excavator turntable, it is characterized in that: said base plate is a straight tube, and the cross section of said straight tube comprises bottom, top margin, straight sided and curvilinear; Bottom, top margin, straight sided and curvilinear link to each other successively and surround special-shaped trapezoidal shape, and wherein following angle with straight sided is 90 degree basically, and the angle of straight sided and top margin is 90 degree basically; Following length is 1.5～2 times of top margin length; Straight sided length is identical with top margin length, and curvilinear comprises continuous straightway and arc section, and said straightway connects top margin; Said arc section connects following, and the radius of arc section is half the less than following edge lengths; Said following corresponding lower plate and the corresponding top board of said top margin are processed by the 45# steel, and the corresponding curve side plate of front plate that said straight sided is corresponding and said curvilinear is processed by low-carbon alloy steel.
2. shape tube base plate as claimed in claim 1, wherein said straightway and arc section are tangent.
3. according to claim 1 or claim 2 shape tube base plate, an end of wherein said base plate is the inclined-plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110189740A CN102312459A (en) | 2011-07-07 | 2011-07-07 | Special-shaped pipe bottom plate for turntable of excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110189740A CN102312459A (en) | 2011-07-07 | 2011-07-07 | Special-shaped pipe bottom plate for turntable of excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102312459A true CN102312459A (en) | 2012-01-11 |
Family
ID=45425996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110189740A Pending CN102312459A (en) | 2011-07-07 | 2011-07-07 | Special-shaped pipe bottom plate for turntable of excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102312459A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002267093A (en) * | 2001-03-07 | 2002-09-18 | Komatsu Ltd | Structural member and structure using the same |
| CN201739643U (en) * | 2010-06-10 | 2011-02-09 | 江阴市界达特异制管有限公司 | Right trapezoid pipe for bus luggage holder |
| CN201738364U (en) * | 2010-06-10 | 2011-02-09 | 江阴市界达特异制管有限公司 | Fan-shaped corner-unfilled tube for excavators |
| CN202164649U (en) * | 2011-07-07 | 2012-03-14 | 力士德工程机械股份有限公司 | Abnormal-shape pipe bottom plate for excvavtor rotary table |
-
2011
- 2011-07-07 CN CN201110189740A patent/CN102312459A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002267093A (en) * | 2001-03-07 | 2002-09-18 | Komatsu Ltd | Structural member and structure using the same |
| CN201739643U (en) * | 2010-06-10 | 2011-02-09 | 江阴市界达特异制管有限公司 | Right trapezoid pipe for bus luggage holder |
| CN201738364U (en) * | 2010-06-10 | 2011-02-09 | 江阴市界达特异制管有限公司 | Fan-shaped corner-unfilled tube for excavators |
| CN202164649U (en) * | 2011-07-07 | 2012-03-14 | 力士德工程机械股份有限公司 | Abnormal-shape pipe bottom plate for excvavtor rotary table |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120111 |