CN110758345A - Semitrailer supporting leg structure - Google Patents
Semitrailer supporting leg structure Download PDFInfo
- Publication number
- CN110758345A CN110758345A CN201810824536.3A CN201810824536A CN110758345A CN 110758345 A CN110758345 A CN 110758345A CN 201810824536 A CN201810824536 A CN 201810824536A CN 110758345 A CN110758345 A CN 110758345A
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- CN
- China
- Prior art keywords
- leg
- supporting leg
- semitrailer
- inner supporting
- positioning
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S9/00—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks
- B60S9/02—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for only lifting or supporting
- B60S9/04—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for only lifting or supporting mechanically
Abstract
The invention discloses a semitrailer landing leg structure, which is arranged on a landing leg mounting seat on the outer side of a longitudinal beam and comprises an integrally formed outer supporting leg, an integrally formed inner supporting leg is arranged in the outer supporting leg in a sliding manner, and a positioning device is correspondingly arranged on the sliding contact surface of the outer supporting leg and the inner supporting leg; the bottom ends of the inner supporting legs are supported on the ground, a height adjusting device is arranged between the outer supporting legs and the inner supporting legs, and the outer supporting legs and the inner supporting legs are all aluminum alloy supporting legs; the invention adopts the all-aluminum alloy material, has light weight, reduces the fuel consumption and enlarges the application prospect; the welding amount and the welding deformation of the longitudinal beam are effectively reduced and the strength is improved because the direct extrusion molding is mainly adopted; and the height of the bearing platform is reduced, and the stability and the safety of the whole vehicle are improved.
Description
Technical Field
The invention relates to the technical field of semi-trailer parts, in particular to a support leg structure of a semi-trailer.
Background
At present, the lightweight of the automobile has become the consensus of the automobile industry, and the semitrailer is mostly formed by welding steel structural members, and the problems of large weight of the whole automobile, high oil consumption and the like exist, so that the problem of fully reducing the weight of the semitrailer becomes urgent to solve under the condition of meeting the use requirement.
The landing leg structure is installed on the longeron about the semitrailer chassis as an important part of semitrailer, and the height of semitrailer can be adjusted according to the actual height of tractor traction seat to the auxiliary stay semitrailer when cargo handling or parking are overhauld, can contract when the semitrailer travel in-process or non-user state, avoids landing leg structure and ground contact and causes the traffic accident. And present semitrailer landing leg structure mainly adopts the steel landing leg, and self weight is heavy to increased the weight of semitrailer, reduced freight's quantity, economic benefits is low, and wherein the landing leg structure mainly adopts the steel sheet welding to make, and easy desolder reduces structural strength, leads to unable normal use, can't satisfy people's user demand.
Disclosure of Invention
The invention aims to solve the technical problem of providing a semitrailer leg structure which is light in weight, has enough strength and meets the use requirement of a whole semitrailer.
In order to solve the technical problems, the technical scheme of the invention is as follows: the semitrailer landing leg structure is arranged on a landing leg mounting seat on the outer side of the longitudinal beam and comprises an integrally formed outer supporting leg, an integrally formed inner supporting leg is arranged in the outer supporting leg in a sliding mode, and a positioning device is correspondingly arranged on the sliding contact surface of the outer supporting leg and the inner supporting leg; the bottom of the inner supporting leg is supported on the ground, a height adjusting device is arranged between the outer supporting leg and the inner supporting leg, and the outer supporting leg and the inner supporting leg are all aluminum alloy supporting legs.
As a preferred technical scheme, the outer support leg comprises an outer support column slidably mounted with the inner support leg, and a support leg mounting plate fixedly mounted with the support leg mounting seat is arranged on the outer side of the upper portion of the outer support column.
As a preferred technical solution, the inner supporting leg comprises an inner supporting column slidably mounted in the outer supporting column, and a supporting plate supported on the ground is arranged at the bottom of the inner supporting column.
As a preferred technical solution, the positioning device includes a positioning protrusion disposed on an outer wall of the inner support column and a positioning groove disposed on the outer support column and engaged with the positioning protrusion.
As a preferable technical scheme, the positioning protrusion and the positioning groove are in a mutually matched semicircular shape, an arc shape or a trapezoidal shape.
As the preferred technical scheme, the height adjusting device comprises outer connecting holes correspondingly arranged on the side walls of the outer supporting legs, a plurality of inner connecting holes correspondingly matched with the outer connecting holes are arranged on the inner supporting legs, and the outer connecting holes and the inner connecting holes are correspondingly and penetratingly connected with positioning pin shafts.
By adopting the technical scheme, the semitrailer leg structure is arranged on the leg mounting seat on the outer side of the longitudinal beam and comprises an integrally formed outer support leg, an integrally formed inner support leg is arranged in the outer support leg in a sliding manner, and positioning devices are correspondingly arranged on the sliding contact surfaces of the outer support leg and the inner support leg; the bottom ends of the inner supporting legs are supported on the ground, a height adjusting device is arranged between the outer supporting legs and the inner supporting legs, and the outer supporting legs and the inner supporting legs are all aluminum alloy supporting legs;
the invention has the beneficial effects that:
(1) the all-aluminum alloy landing leg structure is adopted, compared with a steel landing leg in the prior art, the all-aluminum alloy landing leg structure is light in weight, and the weight reduction effect can be obviously improved under the condition of meeting the requirements of regulations and bearing, so that the fuel consumption is reduced;
(2) the invention mainly adopts direct extrusion molding, and compared with the steel support leg in the prior art, the invention can effectively reduce the welding amount and the welding deformation of the support leg, thereby improving the strength of the invention and meeting the use requirement of the whole vehicle;
(3) the arrangement of the positioning device enables the outer support legs and the inner support legs to be matched, so that the overall stability is improved; the height adjusting device can realize the support and retraction of the outer support leg and the inner support leg, and is convenient to operate.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein:
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a top view of an embodiment of the present invention;
FIG. 3 is a schematic structural view of an outer support leg according to an embodiment of the present invention;
FIG. 4 is a top view of an outer support leg of an embodiment of the present invention;
FIG. 5 is a schematic structural view of an inner support leg of an embodiment of the present invention;
FIG. 6 is a top view of an inner support leg of an embodiment of the present invention;
FIG. 7 is a view of the embodiment of the present invention in use mounted to the side of a stringer;
in the figure: 1-a longitudinal beam; 2-a support leg mounting base; 3-outer support legs; 31-outer support columns; 32-a leg mounting plate; 4-inner support legs; 41-inner support column; 42-a support plate; 5-a positioning device; 51-a positioning projection; 52-positioning grooves; 6-height adjusting means; 61-external connection hole; 62-internal connection hole; and 63-positioning the pin shaft.
Detailed Description
The invention is further illustrated below with reference to the figures and examples. In the following detailed description, certain exemplary embodiments of the present invention are described by way of illustration only. Needless to say, a person skilled in the art realizes that the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.
As shown in fig. 1 and 2, the semitrailer leg structure is mounted on a leg mounting base 2 on the outer side of a longitudinal beam 1, and comprises an integrally formed outer support leg 3, an integrally formed inner support leg 4 is slidably mounted in the outer support leg 3, and a positioning device 5 is correspondingly arranged on the sliding contact surface of the outer support leg 3 and the inner support leg 4; the bottom end of the inner supporting leg 4 is supported on the ground, the height adjusting device 6 is arranged between the outer supporting leg 3 and the inner supporting leg 4, the outer supporting leg 3 and the inner supporting leg 4 are all aluminum alloy supporting legs, the embodiment adopts an all-aluminum alloy supporting leg structure, compared with a steel supporting leg in the prior art, the weight is light, the weight reduction effect can be obviously improved under the condition of meeting the requirements of regulations and bearing, so that the fuel consumption is reduced, meanwhile, the aluminum alloy supporting leg has the performances of good elasticity, good impact resistance, corrosion resistance, good processing and forming and the like, and the application prospect of the invention is expanded.
As shown in fig. 3 and 4, the outer support leg 3 includes an outer support column 31 slidably mounted with the inner support leg 4, a support leg mounting plate 32 for fixedly mounting with the support leg mounting base 2 is arranged on the outer side of the upper portion of the outer support column 31, the support leg mounting plate 32 is fixedly connected with the support leg mounting base 2 through bolts, and the support leg mounting plate is convenient to disassemble and assemble, can be disassembled and mounted on other semitrailer longitudinal beam structures as required for supporting, and can be reused; the outer support leg 3 adopts an extrusion forming method, the outer support column 31 and the support leg mounting plate 32 are integrally formed, the whole outer support leg 3 has no welding point, and the integral strength of the outer support leg 3 is ensured.
As shown in fig. 5 and 6, the inner support leg 4 includes an inner support column 41 slidably mounted in the outer support column 31, a support plate 42 supported on the ground is disposed at the bottom of the inner support column 41, the inner support leg 4 is formed by extrusion, the inner support column 41 and the support plate 42 are integrally formed, the entire inner support leg 4 has no welding point, i.e., there is no welding connection in this embodiment, compared with the steel support leg in the prior art, the welding amount and welding deformation of the support leg can be effectively reduced, thereby improving the strength of the present invention and meeting the use requirement of the whole vehicle.
As shown in fig. 2, 4 and 6, the positioning device 5 includes a positioning protrusion 51 disposed on an outer wall of the inner support column 41 and a positioning groove 52 disposed on the outer support column 31 and matched with the positioning protrusion 51, in this embodiment, the positioning protrusion 51 and the positioning groove 52 are used in cooperation to vertically position the outer support leg 3 and the inner support leg 4, so as to improve the overall stability; the positioning protrusion 51 and the positioning groove 52 are in a mutually matched semi-circle shape, arc shape or trapezoid shape; in this embodiment, the positioning protrusion 51 and the positioning groove 52 are semi-circular and fit with each other, so that the positioning function can be realized and the processing is convenient.
As shown in fig. 1, 3 and 5, the height adjusting device 6 includes an outer connecting hole 61 correspondingly disposed on the sidewall of the outer supporting leg 3, a plurality of inner connecting holes 62 correspondingly matched with the outer connecting hole 61 are disposed on the inner supporting leg 4, and a positioning pin 63 correspondingly penetrates through the outer connecting hole 61 and the inner connecting holes 62; the position is fixed through the positioning pin shaft 63, and the outer supporting leg 3 and the inner supporting leg 4 are supported and retracted through the matching installation of the outer connecting hole 61 and the inner connecting hole 62, so that the operation is convenient.
As shown in figure 7, the use state diagram of the semitrailer is arranged on the side part of the longitudinal beam 1 in the embodiment, the semitrailer is supported in an auxiliary manner during cargo loading and unloading or parking and maintenance, the height of the semitrailer can be adjusted according to the actual height of the traction seat of the tractor through the height adjusting device 6, and the semitrailer can be contracted during the driving process or the non-use state of the semitrailer, so that traffic accidents caused by contact with the ground are avoided.
The invention has the advantages of simple structure, light weight, convenient installation and the like, wherein the invention adopts the all-aluminum alloy support leg, compared with the steel support leg in the prior art, the support leg has light weight, and can obviously improve the weight reduction effect under the condition of meeting the requirements of regulations and bearing, thereby reducing the fuel consumption; meanwhile, because the aluminum is a green and environment-friendly material, most aluminum parts can be recycled, and the aluminum can be recycled for multiple times, the recovery rate of the aluminum vehicle is high; and because the aluminum alloy supporting leg has the properties of good elasticity, good impact resistance, corrosion resistance, good processing and forming and the like, the application prospect of the invention is expanded.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. Semitrailer landing leg structure installs on the landing leg mount pad in the longeron outside, its characterized in that: the device comprises an integrally formed outer supporting leg, an integrally formed inner supporting leg is arranged in the outer supporting leg in a sliding mode, and a positioning device is correspondingly arranged on the sliding contact surface of the outer supporting leg and the inner supporting leg; the bottom of the inner supporting leg is supported on the ground, a height adjusting device is arranged between the outer supporting leg and the inner supporting leg, and the outer supporting leg and the inner supporting leg are all aluminum alloy supporting legs.
2. The semitrailer leg structure of claim 1, wherein: the outer support leg include with support leg slidable mounting's outer support column in, the upper portion outside of outer support column be provided with be used for with landing leg mount pad fixed mounting's landing leg mounting panel.
3. The semitrailer leg structure of claim 2, wherein: the inner supporting leg comprises an inner supporting column which is slidably mounted in the outer supporting column, and a supporting plate which is supported on the ground is arranged at the bottom of the inner supporting column.
4. A semitrailer leg arrangement according to claim 2 or 3, characterised in that: the positioning device comprises a positioning bulge arranged on the outer wall of the inner support column and a positioning groove arranged on the outer support column and matched with the positioning bulge.
5. The semitrailer leg structure of claim 4, wherein: the positioning protrusion and the positioning groove are in a mutually matched semi-circle shape, arc shape or trapezoid shape.
6. A semitrailer leg arrangement according to any one of claims 1 to 5, characterised in that: the height adjusting device comprises outer connecting holes correspondingly arranged on the side walls of the outer supporting legs, a plurality of inner connecting holes correspondingly matched with the outer connecting holes are arranged on the inner supporting legs, and the outer connecting holes and the inner connecting holes are correspondingly and penetratingly connected with positioning pin shafts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810824536.3A CN110758345A (en) | 2018-07-25 | 2018-07-25 | Semitrailer supporting leg structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810824536.3A CN110758345A (en) | 2018-07-25 | 2018-07-25 | Semitrailer supporting leg structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110758345A true CN110758345A (en) | 2020-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810824536.3A Pending CN110758345A (en) | 2018-07-25 | 2018-07-25 | Semitrailer supporting leg structure |
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| Country | Link |
|---|---|
| CN (1) | CN110758345A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113697007A (en) * | 2021-09-17 | 2021-11-26 | 中国人民解放军63653部队 | Low flat trailer and car |
-
2018
- 2018-07-25 CN CN201810824536.3A patent/CN110758345A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113697007A (en) * | 2021-09-17 | 2021-11-26 | 中国人民解放军63653部队 | Low flat trailer and car |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200207 |
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| WD01 | Invention patent application deemed withdrawn after publication |