CN102717779A - Bottom necking structure of square tube in supporting leg - Google Patents
Bottom necking structure of square tube in supporting leg Download PDFInfo
- Publication number
- CN102717779A CN102717779A CN2012101484722A CN201210148472A CN102717779A CN 102717779 A CN102717779 A CN 102717779A CN 2012101484722 A CN2012101484722 A CN 2012101484722A CN 201210148472 A CN201210148472 A CN 201210148472A CN 102717779 A CN102717779 A CN 102717779A
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- Prior art keywords
- supporting leg
- square tube
- closing
- wall
- necking structure
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Abstract
The invention discloses a bottom necking structure of a square tube in a supporting leg. The bottom necking structure comprises a tube body and a bottom, the bottom consists of a front wall, a rear wall, a left wall and a right wall, inwards concave arc-shaped openings are formed in bottoms of the front wall and the rear wall, and the left wall and the right wall are oppositely inclined to inwards narrow so as to reach positions close to two ends of each of the arc-shaped openings of the front wall and the rear wall. The bottom necking structure is tightly welded and combined with four surfaces of a corresponding connecting shaft tube, and then is fixed on the base of the supporting leg. Besides, the bottom necking structure is compact, a small quantity of transmission parts are provided, manufacturing cost is low, and the static loading capacity of the supporting leg is improved.
Description
Technical field
The present invention relates to the semi-trailer support technical field, square tube bottom closing in structure in particularly a kind of supporting leg.
Background technology
The outside of side bar is equipped with movable supporting legs usually in the superimposed trailer leading portion left and right sides, assisting supporting superimposed trailer when handling goods or the parking maintenance, and can regulate the height of superimposed trailer according to the actual height of various traction vehicle seats.The bottom closing in structure of traditional interior square tube only is that the wherein two sides of bottom is the circular arc opening of semicircle.Weld with being connected central siphon through interior square tube bottom, shrouding down is installed, thereby reach the up-down of supporting leg.But rhs-structure need cooperate a plurality of leg branching parts to use in the existing supporting leg, increased the supporting leg net weight, and the static weight of supporting leg is limited in one's ability.
Summary of the invention
To the deficiency that prior art exists, technical matters to be solved by this invention is, provides a kind of simple in structure, and productive costs is low, square tube bottom closing in structure in the high supporting leg of static weight ability.
The technical scheme that the present invention adopts is: square tube bottom closing in structure in a kind of supporting leg; Comprise body and bottom; The bottom is made up of four walls all around; Going to the bottom of front and back walls is provided with the arc opening of indent, and the inside constriction of left and right wall opposite tilt is to the arc opening two ends near front and back walls.
The arc opening of the front and back walls of said bottom is semicircle.
The bottom of square tube is welded with the connection central siphon in the said supporting leg.
The bottom of square tube is along the base and the connection pipe welding of the arc opening and the left and right wall of front and back walls in the said supporting leg.
The inclined-plane of the left and right wall opposite tilt in bottom of square tube is to make through Forging Technology in the said supporting leg
The invention has the beneficial effects as follows: the both sides of square tube bottom are designed to the inclined-plane that the past certain angle of tilt forms in the supporting leg, and both sides are designed to the radian opening of semicircle in addition.Above-mentioned closing in structure is connected the closely welding combination of central siphon four sides with corresponding, is fixed on the base of supporting leg again, and square tube is welded more firmly with being connected central siphon in making, and further improves the static weight ability of supporting leg.Compact conformation of the present invention, Transmission is few, and technology is simple, low cost of manufacture.
Description of drawings
Fig. 1 uses leg structure scheme drawing of the present invention;
Fig. 2 is the scheme drawing of square tube bottom closing in structure in the supporting leg of the present invention;
Fig. 3 is the schematic perspective view of square tube bottom closing in structure in the supporting leg of the present invention.
In the accompanying drawing, 1 is interior square tube, and 2 for connecting central siphon, and 3 is base, and 4 is that supporting leg, 5 is that screw mandrel, 11 is the bottom, and 12 is body, and 111 is the inclined-plane, and 112 is arc opening.
The specific embodiment
Below pass through the specific embodiment, and in conjunction with the accompanying drawings the present invention is described further.
Like Fig. 1,2, shown in 3; Supporting leg is made up of outer square tube, interior square tube 1, gear case, base 3; Interior square tube comprises body 12 and base 11; Its bottom design closing in structure: the bottom is made up of four walls all around, and going to the bottom of front and back walls is provided with the arc opening of indent, and the inside constriction of left and right wall opposite tilt is to the arc opening two ends near front and back walls.Wherein the arc opening 112 of the front and back walls of bottom is semicircle.The bottom is along the base and the connection pipe welding of the arc opening and the left and right wall of front and back walls.The inclined-plane 111 of the left and right wall opposite tilt in bottom is to make through Forging Technology.The both sides of square tube bottom are designed to the inclined-plane that the past certain angle of tilt forms in the supporting leg of the present invention; Both sides are designed to the radian opening of semicircle in addition, and above-mentioned closing in structure is closely welded combination with the corresponding central siphon four sides that is connected, and is fixed on the base of supporting leg again; The radian opening that the both sides of bottom are designed to semicircle need be to be consistent with the surface that is connected central siphon; The closing in structure of interior square tube be connected central siphon and can reach four sides welding, the length of the fillet weld that extended makes welding more firm.The closing in structure of interior square tube can stably be fixed on the base through connecting central siphon, thereby reaches the flexible up-down of earth plate.Because the inclined design of square tube bottom has reduced the length of square tube in the supporting leg, can remove the following shrouding of existing supporting leg, thus saving in material; This closing in structure can be welded with being connected central siphon on four sides, strengthens the welding scope, has increased the intensity of interior square tube, and the static weight ability that makes supporting leg is brought up to 71 tons by original 60 tons.
Claims (5)
1., square tube bottom closing in structure in a kind of supporting leg; Comprise body and bottom; It is characterized in that: the bottom is made up of four walls all around, and going to the bottom of front and back walls is provided with the arc opening of indent, and the inside constriction of left and right wall opposite tilt is to the arc opening two ends near front and back walls.
2. the closing in structure of square tube bottom in the supporting leg according to claim 1 is characterized in that: the arc opening of the front and back walls of said bottom is for semicircle.
3. the closing in structure of square tube bottom in the supporting leg according to claim 1 and 2, it is characterized in that: the bottom of square tube is welded with the connection central siphon in the said supporting leg.
4. the closing in structure of square tube bottom in the supporting leg according to claim 3 is characterized in that: the bottom of square tube is along the base and the connection pipe welding of the arc opening and the left and right wall of front and back walls in the said supporting leg.
5. the closing in structure of square tube bottom in the supporting leg according to claim 4, it is characterized in that: the inclined-plane of the left and right wall opposite tilt in bottom of square tube is to make through Forging Technology in the said supporting leg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101484722A CN102717779A (en) | 2012-05-14 | 2012-05-14 | Bottom necking structure of square tube in supporting leg |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101484722A CN102717779A (en) | 2012-05-14 | 2012-05-14 | Bottom necking structure of square tube in supporting leg |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102717779A true CN102717779A (en) | 2012-10-10 |
Family
ID=46943700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101484722A Pending CN102717779A (en) | 2012-05-14 | 2012-05-14 | Bottom necking structure of square tube in supporting leg |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102717779A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3861648A (en) * | 1974-01-09 | 1975-01-21 | Pullman Inc | Two-speed trailer landing gear safety arrangement |
| US4052111A (en) * | 1975-11-20 | 1977-10-04 | Baker Harry L | Bogie-wheel shaft lubrication system |
| US4124225A (en) * | 1977-10-14 | 1978-11-07 | Dayton-Walther Corporation | Sandshoe |
| US4187733A (en) * | 1978-05-30 | 1980-02-12 | Dayton-Walther Corporation | Speed reduction mechanism for semi-trailer landing gear |
| CN2843957Y (en) * | 2005-09-09 | 2006-12-06 | 广东富华工程机械制造有限公司 | Leading-screw nut of semi-trailer bearing device |
| CN101495346A (en) * | 2006-07-31 | 2009-07-29 | 哈肯搬运技术有限公司 | Foot device for supporting a support device or lifting device |
| CN202641657U (en) * | 2012-05-14 | 2013-01-02 | 广东富华工程机械制造有限公司 | Inner square tube for support leg |
-
2012
- 2012-05-14 CN CN2012101484722A patent/CN102717779A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3861648A (en) * | 1974-01-09 | 1975-01-21 | Pullman Inc | Two-speed trailer landing gear safety arrangement |
| US4052111A (en) * | 1975-11-20 | 1977-10-04 | Baker Harry L | Bogie-wheel shaft lubrication system |
| US4124225A (en) * | 1977-10-14 | 1978-11-07 | Dayton-Walther Corporation | Sandshoe |
| US4187733A (en) * | 1978-05-30 | 1980-02-12 | Dayton-Walther Corporation | Speed reduction mechanism for semi-trailer landing gear |
| CN2843957Y (en) * | 2005-09-09 | 2006-12-06 | 广东富华工程机械制造有限公司 | Leading-screw nut of semi-trailer bearing device |
| CN101495346A (en) * | 2006-07-31 | 2009-07-29 | 哈肯搬运技术有限公司 | Foot device for supporting a support device or lifting device |
| CN202641657U (en) * | 2012-05-14 | 2013-01-02 | 广东富华工程机械制造有限公司 | Inner square tube for support leg |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20121010 |