CN102756716A - Adjustable linked landing leg of semitrailer - Google Patents
Adjustable linked landing leg of semitrailer Download PDFInfo
- Publication number
- CN102756716A CN102756716A CN2012102109211A CN201210210921A CN102756716A CN 102756716 A CN102756716 A CN 102756716A CN 2012102109211 A CN2012102109211 A CN 2012102109211A CN 201210210921 A CN201210210921 A CN 201210210921A CN 102756716 A CN102756716 A CN 102756716A
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- supporting leg
- landing leg
- bearing plate
- stay bearing
- superimposed trailer
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Abstract
The invention relates to an adjustable linked landing leg of a semitrailer. The adjustable linked landing leg of the semitrailer comprises a left landing leg, a right landing leg, a landing leg seat and a connecting shaft, wherein the left landing leg and the right landing leg can be arranged on the front end of the semitrailer; the landing leg seat is articulated with the lower ends of the landing legs; the connecting shaft is positioned between the left landing leg and the right landing leg; the landing legs are of inner-outer sleeve pipe structures; the left landing leg and/or the right landing leg are/is provided with double-speed gear transmission mechanisms; the landing leg seat comprises a support plate and an automatic aligning rotary device with an arc outer edge, wherein the support plate contacts with the ground, the automatic aligning rotary device with the arc outer edge is articulated with the landing legs, the automatic aligning rotary device with the arc outer edge is articulated with the support plate, the outer edge of the automatic aligning rotary device with the arc outer edge is connected with the support plate in a rolling way, a return spring is arranged between the automatic aligning rotary device and the support plate, and the automatic aligning rotary device can be formed by two parallel sector plates which are fixedly connected through a cross rod. The adjustable linked landing leg of the semitrailer is simple in structure and can be suitable for various unsmooth grounds, automatically adjust the gravity center and neutralize the horizontal external force born by the landing legs during work through self-adaptive adjustment.
Description
Technical field
The present invention relates to the adjustable interlock supporting leg of a kind of superimposed trailer; Comprise that supporting leg can be installed in the left and right supporting leg and the middle adapter shaft of superimposed trailer front end; This supporting leg is the internal and external casing structure; Left branch leg and/or right supporting leg reach and are provided with the two-speed gear transmission device, and said supporting leg is through bearing pin and supporting leg lower ends.
Background technology
In the use of superimposed trailer and lifting construction machinery and equipment, in order to protect supporting leg, the side force that receives in the time of should as far as possible reducing supporting leg work.Operating modes such as vertical shift in operation process, leveling, piling, and the unbalance stress that causes because of the ground injustice all can produce side force.A leg mechanism of prior art, side force is directly born by supporting leg, and supporting leg produces bigger moment of flexure.Especially hydraulic ram mechanism, side force passes to cylinder tube by piston rod, passes to fuselage by cylinder barrel then, finally causes the flexural deformation of support oil cylinder piston rod, orienting sleeve excessive clearance, problems such as oil cylinder leakage of oil.
Occurred at present the being connected through the hinge device of a supporting leg and a rigid leg seat, though this structure can be improved the stressing conditions of vertical leg; The friction force of rigid leg seat and bottom surface is bigger; Can not move, if ground is uneven, perhaps weight-lifting equipment receives lateral external forces and mobile trend is arranged; Can make the hinge on the rigid leg seat receive bigger lateral external forces, cause supporting leg to receive moment of flexure easily.Therefore the rigid leg seat can not effectively reduce the side force of vertical leg, makes supporting leg impaired easily.
China utility model prospectus CN201777804U discloses a kind of adjustable support leg pin, comprises base and upper end cover, and the upper end cover upper end is provided with the ball pivot seat, the empty cover in upper end cover lower end and base upper end, and between upper end cover and base, be provided with radially pull back spring.This adjustable support leg pin can reduce supporting leg through the self adaptation adjusting and when working, bear unbalance loading.But this device is when receiving lateral external forces, and the moving range of the relative base of upper end cover of supporting leg dish is less, when mobile range is big, just can't effectively regulate.And this structure uses spherical hinge to connect, complex structure, and requirement on machining accuracy is high, and cost is higher; This structural-load-carrying capacity is less, when load is big, is damaged easily.
Summary of the invention
The technical matters that the present invention will solve provides a kind of simple in structure, can adapt to various unfairnesses ground, can the automatically regulating center of gravity, regulate the adjustable interlock supporting leg of superimposed trailer of offsetting the lateral external forces that supporting leg born when the work through self adaptation.
For solving the problems of the technologies described above; Superimposed trailer of the present invention is adjustable left and right supporting leg that the interlock supporting leg comprises can be installed in the superimposed trailer front end and with supporting leg lower end pivotally attached supporting leg seat; And the adapter shaft in the middle of the left and right supporting leg; Said supporting leg is the internal and external casing structure; Left branch leg and/or right supporting leg reach and are provided with the two-speed gear transmission device, and said supporting leg seat comprises and the contacted stay bearing plate in ground, it is characterized in that: said supporting leg seat also comprises the automatic capturing slewing arrangement that has the circular arc outer rim with the supporting leg pivotally attached; Said automatic capturing slewing arrangement and stay bearing plate with circular arc outer rim is hinged, and the outer rim with automatic capturing slewing arrangement of circular arc outer rim is rolled with stay bearing plate and is connected.
Have between automatic capturing slewing arrangement and the stay bearing plate of circular arc outer rim and be provided with pull back spring.
Automatic capturing slewing arrangement with circular arc outer rim is two parallel quadrants through the cross bar captive joint.
Circle centre position at quadrant is provided with pin-and-hole, and automatic capturing slewing arrangement and supporting leg with circular arc outer rim are hinged through this pin-and-hole.
Be provided with on the stay bearing plate and two of the stay bearing plate one parallel risers, be provided with between two risers and the reinforced rib of stay bearing plate one.Pull back spring one end is connected on the reinforced rib with the stay bearing plate one, and the other end is connected on the cross bar.Through hole is set on the riser, and automatic capturing slewing arrangement and stay bearing plate with circular arc outer rim are hinged through through hole and cross bar.The outer rim setting of quadrant is perpendicular to the backing plate of quadrant.The stay bearing plate two ends are provided with the protrusion that is upturned.
Gap between the internal and external casing of supporting leg is 1 millimeter.
After adopting such structure; Owing to be provided with and the fan-shaped metal sheet of supporting leg pivotally attached between supporting leg lower end and the grounding plate; When ground is uneven or supporting leg when receiving lateral external forces; Fan-shaped metal sheet will roll along outer rim, thereby regulate the moment of flexure that supporting leg receives, and avoid supporting leg to bear lateral external forces and be damaged.Owing to can be provided with pull back spring between fan-shaped metal sheet and the grounding plate, when supporting leg is in light condition, grounding plate will be under the effect of pull back spring self-return.Superimposed trailer of the present invention is adjustable, and the interlock leg structure is simple; Can adapt to various unfairnesses ground, can the automatically regulating center of gravity, regulate through self adaptation and to offset the lateral external forces that supporting leg is born when the work; Make that supporting leg is difficult for being damaged; When especially supporting leg is hydraulic power, can finely must protect hydraulic efficiency gear, prolong its life-span.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is done further detailed explanation.
Fig. 1 is the front view of the adjustable interlock supporting leg of superimposed trailer of the present invention;
Fig. 2 is the left view of the adjustable interlock supporting leg of superimposed trailer of the present invention;
Fig. 3 is the partial enlarged drawing of A part among the adjustable interlock supporting leg of superimposed trailer of the present invention Fig. 1;
Fig. 4 is the longitudinal sectional drawing of the adjustable interlock supporting leg of superimposed trailer of the present invention along II-II line among Fig. 3.
The specific embodiment
As depicted in figs. 1 and 2; Superimposed trailer of the present invention is adjustable left branch leg 12 that the interlock supporting leg comprises can be installed in the superimposed trailer front end, right supporting leg 13 and with supporting leg lower end pivotally attached supporting leg seat, the adapter shaft 15 in the middle of left branch leg 12 and the right supporting leg 13, and hand crank 17; Supporting leg is the internal and external casing structure; Gap between the inside and outside sleeve is 1 millimeter, and left branch leg 12 is provided with two-speed gear transmission device 16, and the supporting leg seat comprises and the contacted stay bearing plate 3 in ground; Stay bearing plate 3 one sides vertically are provided with two risers that are parallel to each other 4, and del through hole 5 is set on the riser 4; Two parallel quadrants 6 through three cross bar 7 captive joints are formed the automatic capturing slewing arrangement; Two parallel quadrants 6 are positioned at two riser that is parallel to each other 4 outsides; Wherein a cross bar 7a passes the del through hole 5 on the riser 4, makes automatic capturing slewing arrangement and stay bearing plate 3 be hinged; Circle centre position at quadrant 6 is provided with pin-and-hole 1, and quadrant 6 is hinged through pin-and-hole 1 and supporting leg 12 lower ends.Be provided with between quadrant 6 and the stay bearing plate 3 between 9, two risers that are parallel to each other 4 of pull back spring of two symmetries two reinforced ribs 11 are set, every pull back spring 9 one ends connect whippletree 7, and the other end connects reinforced rib 11.The circumferential outer edge of quadrant 6 can be provided with the metal backing 10 perpendicular to quadrant 6.Stay bearing plate 3 two ends can be provided with the protrusion 3a that is upturned.
During use; When ground is uneven or supporting leg when receiving lateral external forces; The automatic capturing slewing arrangement of being made up of two parallel quadrants 6 can roll along stay bearing plate 3, thereby makes supporting leg can adapt to various uneven grounds, the center of gravity of automatically regulating weight-lifting equipment; Regulate the moment of flexure that supporting leg 2 receives, avoid supporting leg 2 to bear lateral external forces and be damaged.When supporting leg 2 is in light condition, stay bearing plate will be under the effect of pull back spring 9 self-return.
The above only is to preferred embodiment of the present invention, is not that the present invention is done other forms of restriction, and any professional and technical personnel of being familiar with possibly utilize the technology contents of above-mentioned announcement to change or be modified as the equivalent embodiment of equal variation.For example, the automatic capturing slewing arrangement with circular arc outer rim can be that the side is fan-shaped casing, and pull back spring can be arranged on other position that can make the stay bearing plate return, on the riser circular arc through hole can be set.Every the present invention program's content that do not break away from, all drops in protection scope of the present invention any simple modification, equivalent variations and remodeling that above embodiment did according to technical spirit of the present invention.
Claims (10)
1. adjustable interlock supporting leg of superimposed trailer; It comprises the left and right supporting leg that can be installed in the superimposed trailer front end and with supporting leg lower end pivotally attached supporting leg seat; And the adapter shaft in the middle of the left and right supporting leg, said supporting leg is the internal and external casing structure, left branch leg and/or right supporting leg reach and are provided with the two-speed gear transmission device; Said supporting leg seat comprises and the contacted stay bearing plate in ground; It is characterized in that: said supporting leg seat also comprises the automatic capturing slewing arrangement that has the circular arc outer rim with the supporting leg pivotally attached, and said automatic capturing slewing arrangement and stay bearing plate with circular arc outer rim is hinged, and the outer rim with automatic capturing slewing arrangement of circular arc outer rim is rolled with stay bearing plate and is connected.
2. according to the adjustable interlock supporting leg of the described superimposed trailer of claim 1, it is characterized in that: be provided with pull back spring between said automatic capturing slewing arrangement with circular arc outer rim and the stay bearing plate.
3. according to the adjustable interlock supporting leg of the described superimposed trailer of claim 2, it is characterized in that: the automatic capturing slewing arrangement with circular arc outer rim is two parallel quadrants through the cross bar captive joint.
4. according to the adjustable interlock supporting leg of the described superimposed trailer of claim 3, it is characterized in that: the circle centre position at said quadrant is provided with pin-and-hole, and automatic capturing slewing arrangement and supporting leg with circular arc outer rim are hinged through this pin-and-hole.
5. according to the adjustable interlock supporting leg of the described superimposed trailer of claim 4, it is characterized in that: be provided with on the said stay bearing plate and two of the stay bearing plate one parallel risers, be provided with between two risers and the reinforced rib of stay bearing plate one.
6. according to the adjustable interlock supporting leg of the described superimposed trailer of claim 5, it is characterized in that: said pull back spring one end is connected on the reinforced rib with the stay bearing plate one, and the other end is connected on the cross bar.
7. according to the adjustable interlock supporting leg of the described superimposed trailer of claim 6, it is characterized in that: on the said riser through hole is set, said automatic capturing slewing arrangement with circular arc outer rim and stay bearing plate are hinged through through hole and cross bar.
8. according to the adjustable interlock supporting leg of the described superimposed trailer of claim 2, it is characterized in that: the outer rim setting of said quadrant is perpendicular to the backing plate of quadrant.
9. according to the adjustable interlock supporting leg of the described superimposed trailer of claim 1, it is characterized in that: said stay bearing plate two ends are provided with the protrusion that is upturned.
10. according to the adjustable interlock supporting leg of the described superimposed trailer of claim 1, it is characterized in that: the gap between the internal and external casing is 1 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102109211A CN102756716A (en) | 2012-06-21 | 2012-06-21 | Adjustable linked landing leg of semitrailer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102109211A CN102756716A (en) | 2012-06-21 | 2012-06-21 | Adjustable linked landing leg of semitrailer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102756716A true CN102756716A (en) | 2012-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102109211A Pending CN102756716A (en) | 2012-06-21 | 2012-06-21 | Adjustable linked landing leg of semitrailer |
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| Country | Link |
|---|---|
| CN (1) | CN102756716A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089277A (en) * | 2015-09-04 | 2015-11-25 | 山东万世机械科技有限公司 | New laser leveler supporting legs |
| CN105818732A (en) * | 2016-06-07 | 2016-08-03 | 上海庆华蜂巢科技发展股份有限公司 | Terrain adaptive vertical bracing mechanism and foldable motor home |
-
2012
- 2012-06-21 CN CN2012102109211A patent/CN102756716A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089277A (en) * | 2015-09-04 | 2015-11-25 | 山东万世机械科技有限公司 | New laser leveler supporting legs |
| CN105818732A (en) * | 2016-06-07 | 2016-08-03 | 上海庆华蜂巢科技发展股份有限公司 | Terrain adaptive vertical bracing mechanism and foldable motor home |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121031 |