CN202164649U - Abnormal-shape pipe bottom plate for excvavtor rotary table - Google Patents
Abnormal-shape pipe bottom plate for excvavtor rotary table Download PDFInfo
- Publication number
- CN202164649U CN202164649U CN2011202382074U CN201120238207U CN202164649U CN 202164649 U CN202164649 U CN 202164649U CN 2011202382074 U CN2011202382074 U CN 2011202382074U CN 201120238207 U CN201120238207 U CN 201120238207U CN 202164649 U CN202164649 U CN 202164649U
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- top margin
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Abstract
The utility model provides an abnormal-shape pipe bottom plate for an excvavtor rotary table. The bottom plate is a straight pipe, the section of the straight pipe comprises a lower edge, a top edge, a straight side edge and a curve side edge which are connected in sequence to form a shape of an abnormal-shape trapezoid. An included angle formed by the lower edge and the straight side edge is 90 degrees roughly, an included angle formed by the straight side edge and the top edge is 90 degrees roughly, the length of the lower edge is 1.5 to 2 times of the length of the top edge, and the length of the straight side edge is identical with that of the top edge. The curve side edge comprises a straight line section and a circular arc section which are connected, the straight line section is connected with the top edge, the circular arc section is connected with the lower edge, and the radius of the circular arc section is smaller than a half of the length of the lower edge. A lower plate corresponding to the lower edge and a top plate corresponding to the top edge are made of 45# steel, and a straight side plate corresponding to the straight side edge and a curve side plate corresponding to the curve side edge are made of low-carbon alloy steel.
Description
Technical field
The utility model relates to a kind of special-purpose member of excavator turntable, relates in particular to a kind of new-type special pipe 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 utility model proposes a kind of special pipe base plate that is used for the excavator turntable, and 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 the trapezoidal shape of abnormity, 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 advantage of the utility model is:
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 utility model abnormity tubular type;
Accompanying drawing 3 is the turntable base plate elevation of the utility model 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 described preferred embodiment that is used for the special pipe base plate of excavator turntable of the utility model.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 the trapezoidal shape of abnormity, 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 the utility model patent; But the protection domain of the utility model patent is not limited thereto; Any technician who is familiar with the present technique field is in the technical scope that the utility model patent discloses, and the variation that can expect easily or replacement all should be encompassed within the protection domain of the utility model patent.
Claims (3)
1. special pipe 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 the trapezoidal shape of abnormity, 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. special pipe base plate as claimed in claim 1, wherein said straightway and arc section are tangent.
3. according to claim 1 or claim 2 special pipe base plate, an end of wherein said base plate is the inclined-plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202382074U CN202164649U (en) | 2011-07-07 | 2011-07-07 | Abnormal-shape pipe bottom plate for excvavtor rotary table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202382074U CN202164649U (en) | 2011-07-07 | 2011-07-07 | Abnormal-shape pipe bottom plate for excvavtor rotary table |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202164649U true CN202164649U (en) | 2012-03-14 |
Family
ID=45800488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202382074U Expired - Fee Related CN202164649U (en) | 2011-07-07 | 2011-07-07 | Abnormal-shape pipe bottom plate for excvavtor rotary table |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202164649U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312459A (en) * | 2011-07-07 | 2012-01-11 | 力士德工程机械股份有限公司 | Special-shaped pipe bottom plate for turntable of excavator |
-
2011
- 2011-07-07 CN CN2011202382074U patent/CN202164649U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312459A (en) * | 2011-07-07 | 2012-01-11 | 力士德工程机械股份有限公司 | Special-shaped pipe bottom plate for turntable of excavator |
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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: 20120314 Termination date: 20140707 |
|
| EXPY | Termination of patent right or utility model |