CN218021566U - Landing leg arm section, pump truck landing leg and pump truck - Google Patents
Landing leg arm section, pump truck landing leg and pump truck Download PDFInfo
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- CN218021566U CN218021566U CN202222480784.5U CN202222480784U CN218021566U CN 218021566 U CN218021566 U CN 218021566U CN 202222480784 U CN202222480784 U CN 202222480784U CN 218021566 U CN218021566 U CN 218021566U
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- 238000009826 distribution Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
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- 238000005457 optimization Methods 0.000 description 3
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Abstract
The utility model belongs to the technical field of engineering machine tool, concretely relates to landing leg arm festival, pump truck landing leg and pump truck, landing leg arm festival is including apron and web, two apron parallel interval arrangements, and the web is connected between two apron, and two webs and two apron counterpoint to arrange and enclose into hollow rectangle cylinder. The cover plate and the web plate are integrally formed elements with uniform thickness, and the cover plate hollowed-out area and the web plate hollowed-out area which extend along the length direction are respectively arranged on the cover plate and the web plate. The utility model discloses set up apron fretwork district and web fretwork district respectively on the apron of landing leg arm festival and web, under the condition of guaranteeing the reliability, the lightweight of the realization landing leg arm festival of maximize promotes manufacturing process nature simultaneously, realizes cost reduction and efficiency. And the cover plate and the web plate are all integrally formed elements with uniform thickness, so that the welding amount of the leg arm joint can be effectively reduced, the manufacturing difficulty is reduced, the reduction of welding thermal deformation is facilitated, and the manufacturing quality of the leg arm joint is improved.
Description
Technical Field
The utility model belongs to the technical field of engineering machine tool, especially, relate to a landing leg arm festival, pump truck landing leg and pump truck.
Background
At present, the monitoring of the overweight of the vehicle in China is increasingly strict, and the lightweight requirement is put forward for the concrete pump truck as a large-scale operation vehicle. Nowadays, in order to meet the lightweight requirements of supporting legs, there are two main schemes: the first scheme adopts plates with different thicknesses to carry out tailor welding butt joint according to the stress condition of the supporting leg, the mode increases the welding amount between different plates, the process manufacturing difficulty is high, the manufacturing cost is also high, and in addition, the excessive welding amount can cause the welding deformation of the supporting leg. The other method is to adopt a whole thin plate to carry out box combination welding, and then add welding flitch plates in different areas according to stress conditions to strengthen, the requirement of the scheme on the manufacturing process is not high, and the manufacturing cost can be reduced to a certain extent, but the scheme of using two plates to attach can lead the actual stress performance of the supporting leg to be poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a landing leg arm festival, pump truck landing leg and pump truck, aim at solving the lightweight design of the landing leg among the prior art and produce welding deformation and can reduce the technical problem of landing leg atress performance.
In order to achieve the above object, the utility model provides a landing leg arm festival, wherein, the landing leg arm festival includes:
a plurality of cover plates arranged at intervals;
the web plate is connected among the cover plates;
the cover plate and the web plate are integrally formed elements with uniform thickness, and a cover plate hollow area and a web plate hollow area which extend along the length direction are respectively arranged on the cover plate and/or the web plate.
The embodiment of the utility model provides an in, web fretwork district sets up in the centre of web and length 1/2 of the length of whole web, and the both ends in web fretwork district respectively with the distance between the both ends of web equal.
The embodiment of the utility model provides an in, the tip of landing leg arm festival is formed with the interface, and apron fretwork district sets up the one end of keeping away from the interface on the apron and length is 1/2 of whole apron length.
The embodiment of the utility model provides an in, web fretwork district and apron fretwork district all are equipped with a plurality of through holes along the even interval arrangement of length direction.
In an embodiment of the present invention, the area of the through holes on the hollow area of the cover plate decreases progressively along the direction close to the socket.
In the embodiment of the present invention, the minimum distance between any two adjacent through holes is greater than 70mm.
The embodiment of the utility model provides an in, minimum distance between every through hole on the web fretwork district and the side of web, minimum distance between every through hole on the apron fretwork district and the side of apron all are greater than 50mm.
In the embodiment of the present invention, the through hole is covered with a light sealing member.
The embodiment of the utility model provides an in, still provide a pump truck landing leg, this pump truck landing leg includes a plurality of as above landing leg arm festival, slip grafting links to each other between a plurality of landing leg arm festival.
The embodiment of the utility model provides an in, still provide a pump truck, this pump truck includes as above the pump truck landing leg.
Through the technical scheme, the embodiment of the utility model provides a landing leg arm festival has following beneficial effect:
the utility model discloses set up apron fretwork district and web fretwork district respectively on the apron of landing leg arm festival and web, this hollow out construction can be under the condition of guaranteeing the reliability, and the lightweight of the realization landing leg arm festival of maximize promotes manufacturing process nature simultaneously, and manufacturing cost is showing and is descending, really realizes cost reduction and efficiency. For traditional many slabs welding or add the landing leg that welds the flitch, the utility model discloses an apron and web are the even integrated into one piece component of thickness, can effectively reduce the welding volume of landing leg arm festival, when reducing the manufacturing degree of difficulty, also effectual when having reduced the welding to the thermal deformation that apron and web produced, be favorable to keeping the structural stability of landing leg arm festival, improve the manufacturing quality of landing leg arm festival.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide an understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a schematic structural view of a leg arm section according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a pump truck leg according to an embodiment of the present invention;
fig. 3 is a schematic outline view of a web hollowed-out area according to a first embodiment of the present invention;
fig. 4 is a schematic outline view of a web hollowed-out area according to a second embodiment of the present invention;
fig. 5 is a schematic outline view of a web hollowed-out area according to a third embodiment of the present invention;
FIG. 6 is a schematic view of a portion of a web according to an embodiment of the present invention;
fig. 7 is a schematic view of a part of the cover plate according to an embodiment of the present invention.
Description of the reference numerals
| Reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | |
30 | Through |
| 20 | |
21 | Web |
| 40 | Plug-in |
13 | Hollow-out area of |
| 101 | Supporting leg arm section |
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the present invention.
The following describes a leg arm section according to the present invention with reference to the drawings.
As shown in fig. 1, in an embodiment of the present invention, there is provided a leg arm section 101, the leg arm section 101 includes a cover plate 10 and a web plate 20, a plurality of cover plates 10 are arranged in parallel and spaced apart, the web plate 20 is connected between the plurality of cover plates 10, and the web plate 20 and the cover plates 10 are arranged in an aligned manner to enclose a hollow cylinder. The cover plate 10 and the web plate 20 are integrally formed components with uniform thickness, and the cover plate hollow area 13 and the web plate hollow area 21 extending along the length direction are respectively arranged on the cover plate 10 and/or the web plate 20. The plurality of cover plates 10 may include 2 cover plates or more than 2 cover plates, and 2 cover plates are illustrated in the embodiment illustrated in the drawings of the present application.
The utility model discloses set up apron fretwork area 13 and web fretwork area 21 on the apron 10 of landing leg arm festival 101 and web 20 respectively, this hollow out construction can be under the condition of guaranteeing the reliability, and the lightweight of the realization landing leg arm festival 101 of maximize promotes manufacturing process nature simultaneously, and manufacturing cost is showing and is descending, really realizes reducing cost and improving effect. Adopt many plate welding or add the welding flitch and make for prior art's apron 10 or web 20, the utility model discloses an apron 10 and web 20 all adopt the even integrated into one piece component of thickness, can effectively reduce landing leg arm festival 101's welding volume, when reducing the manufacturing degree of difficulty, also effectual when having reduced the welding to the thermal deformation of apron 10 and web 20 production, be favorable to keeping the structural stability of landing leg arm festival 101, improve the manufacturing quality of landing leg arm festival 101.
The leg arm section 101 may be a front leg arm section or a rear leg arm section of an engineering machine (e.g. a pump truck), and in a preferred embodiment, when the leg arm section 101 is a front leg arm section, the web 20 and the web 10 are respectively provided with a web hollow area 13 and a web hollow area 21; when the leg arm segment 101 is a rear leg arm segment, only the web hollow-out area 21 is provided on the web 20.
The following embodiments are all illustrated for the leg arm segment 101 being a front leg arm segment.
In the actual design process, the structural forms of the cover plate hollow-out area 13 and the web plate hollow-out area 21 are not fixed, and the design can be adaptively changed according to the actual working condition and the stress condition of the leg arm section 101, for example, the shape of the hollow-out area is set to be various appropriate shapes such as a circle and a diamond. Specifically, when the cover plate 10 or the web plate 20 is designed to be hollowed out, structural topology optimization can be performed according to the overall stress condition of the leg arm section 101, so that the weight reduction and the manufacturing difficulty can be realized while the reliable stress performance of the leg arm section 101 can be ensured, and the manufacturing quality of the leg arm section 101 is improved. As the working conditions of the supporting leg arm joint 101 are complex and various, in order to ensure the reliability of the supporting leg arm joint 101, the result of the structure optimization is the combined solution of various working conditions, thereby enabling the front supporting leg to simultaneously meet the working requirements of various working conditions.
Further, when the shape of the web plate hollow-out area 21 or the cover plate hollow-out area 13 is designed, the whole design space is assumed to be a micro-structure unit similar to air hole distribution, the density of the micro-structure unit in a high stress area is high, and the density of the micro-structure unit in a low stress area is low, so that an effective bearing structure can be formed, when all iterative calculations are completed, a reasonable minimum density value is defined, then the micro-structure units in the design space with the density lower than the minimum density value are removed, and a weight optimization bearing structure with the highest material effect is generated. The cover plate hollow-out areas 13 and the web plate hollow-out areas 21 in the present embodiment can be understood as microstructure units with density lower than this minimum value in the design space.
Based on the hollowed-out design mode, the arrangement positions and the arrangement modes of the cover plate hollowed-out areas 13 and the web hollowed-out areas 21 on the supporting leg arm sections 101 can be accurately arranged according to function calculation of a variable density method, the variable density method in the prior art explicitly expresses the corresponding relation between the relative density of units and the elastic modulus of materials in a continuous variable density function mode, a force transmission route with the optimal structure is sought, so that the material distribution in an optimized design area is realized, and the method has the advantages of easiness in program realization, high calculation efficiency and high calculation precision.
To sum up, the utility model discloses a technical scheme disclosed in the embodiment is the preferred solution of recommendation of apron fretwork area 13 and web fretwork area 21 design, and the size, the shape and the position combination restraint of fretwork all can change harmoniously.
Further, because the stress characteristic of the structure of the leg arm section 101 shows that the stress of the middle section of the web 20 is small on the web 20, the web hollow area 21 is mainly concentrated on the middle section, and when the design is specifically quantifiable, the position and the size of the web hollow area 21 can be adjusted to be that the distances from the front end and the tail end are 1/4 of the length of the whole web 20. That is to say, the utility model discloses in mainly concentrate on web fretwork area 21 the interlude of web 20, and the length of whole web fretwork area 21 is 1/2 of the length of whole web 20, promptly, the both ends of web fretwork area 21 respectively with the web 20 between the both ends apart from equal to fretwork part web 20 when can guarantee web 20 structural strength improves the manufacturing quality of web 20, realizes the lightweight, reduces the manufacturing cost of web 20.
Similarly, since the left end of the leg arm section 101 is formed with the socket 40, for a single leg arm section 101, as shown in fig. 7, the stress on the cover plate 10 gradually increases from left to right, and therefore the cover plate hollow area 13 is mainly concentrated on one end of the cover plate 10 away from the socket 40, which can be specifically quantized to 1/2 of the length of the cover plate 10. Therefore, the utility model discloses to lap fretwork district 13 and set up the one end and the length of keeping away from interface 40 on apron 10 and set up to the 1/2 of whole apron 10 length, fretwork part apron 10 when can guarantee apron 10 structural strength according to this, improves the manufacturing quality of apron 10, realizes the lightweight, reduces the manufacturing cost of apron 10.
In the embodiment of the present invention, as shown in fig. 3 to 5, the web hollow-out area 21 and the cover plate hollow-out area 13 are both provided with a plurality of through holes 30 arranged along the length direction at regular intervals, the shape of the through holes 30 is not limited, the illustration shows only a limited typical structural form, and the design can be changed according to the actual working condition of the leg arm section 101, such as changing the shape of the through holes 30 into other shapes, such as a circle, a diamond, etc. In the first embodiment of the present invention, as shown in fig. 3, the web hollow area 21 is trapezoidal and has three through holes 30 with the same shape and size inside, and the three through holes 30 are all triangle-like.
In the second embodiment of the present invention, as shown in fig. 4, the web hollow area 21 is rectangular and three through holes 30 that are triangle-like are provided inside, and in addition, two through holes 30 located at both ends make adaptive changes in shape according to the boundary of the web hollow area 21.
In the third embodiment of the present invention, as shown in fig. 5, the web hollow area 21 is a parallelogram and has four through holes 30 therein, which have the same shape and size, and the four through holes 30 are all triangle-like.
The external profiles of the web plate hollow-out area 21 and the cover plate hollow-out area 13 are not limited to the forms of trapezoid, rectangle, parallelogram and the like, and different external profiles can be flexibly selected according to the appearance of the hollow-out area during design. The combination shapes adopted in fig. 3 to 5 can have a certain distribution rule, which is beneficial to improving the manufacturing performance and the ornamental value, can be flexibly combined, meets different design constraint conditions, and has wider applicability.
Simultaneously, for the structural stability who guarantees manufacturability requirement and web 20 and apron 10, can not be too much to web 20 and apron 10 fretwork, the utility model discloses need retrain the position of the through hole 30 in web fretwork area 21 and the apron fretwork area 13, it is specific, as shown in fig. 6 and fig. 7, minimum distance L between two arbitrary adjacent through holes 30 is greater than 70mm, and, minimum distance d1 and d2 between every through hole 30 on the web fretwork area 21 and the side of web 20, minimum distance d3 and d4 between every through hole 30 on the apron fretwork area 13 and the side of apron 10 all are greater than 50mm, wherein, d1 and d2 can not be equal, d3 and d4 can not be equal.
It should be noted that the cover plate hollow-out area 13 is mainly concentrated at one end of the cover plate 10 close to the plug 40, so the area of the plurality of through holes 30 in the cover plate hollow-out area 13 is designed to decrease progressively along the direction close to the plug 40.
The above description describes in detail the relationship between the shape, size, position, etc. of the central web hollow-out area 21 and the cover plate hollow-out area 13 and the inner through hole 30 thereof with reference to fig. 3 to 5, but the present invention is not limited thereto. In the technical idea scope of the present invention, it is possible to provide the technical solution of the present invention with a plurality of simple modifications, including combining each specific technical feature in any suitable manner, and in order to avoid unnecessary repetition, the present invention does not provide additional description for various possible combinations. However, these simple modifications and combinations should be considered as the disclosure of the present invention, and all fall within the scope of the present invention, and the design can be changed according to the actual working condition of the supporting leg, such as changing the hollow shape to be circular, diamond, etc.
In another embodiment of the present invention, the through hole 30 is covered with a light sealing member, and in this way, the cover plate 10 and the web plate 20 can be similarly hollowed out, so as to achieve the light weight of the leg arm section 101, cost reduction and efficiency improvement. For example, a thin plate or plastic member may be added to the through hole 30 to seal the inner cavity of the leg, isolate the inner and outer cavities of the front leg, and protect the inner structure of the front leg. The light sealing element can be designed in a welding type structure or an assembling type structure according to actual requirements.
Further, as shown in fig. 2, the present application also provides a pump truck landing leg, which includes a plurality of landing leg arm sections 101 as described above, the landing leg arm sections 101 are connected in a sliding insertion manner, and the weight of each landing leg arm section 101 included in the pump truck landing leg can be reduced by reducing the weight as described above. And simultaneously, the utility model discloses a scheme also does not only confine to the pump truck landing leg that has tertiary structure, also including having the second grade and only having the pump truck landing leg of one-level structure. This application carries out the fretwork through the adoption to landing leg arm festival 101, can realize the landing leg lightweight requirement to all adopt integrated into one piece component preparation through apron and web in the landing leg, can effectively reduce the welding volume of pump truck landing leg, reduce the manufacturing degree of difficulty and improve manufacturing quality. It should be noted that the hollowed-out improvement on the leg arm segment 101 may be provided in any arm segment of the leg of the pump truck, or a plurality of arm segments may be hollowed out at the same time.
In addition, this application still provides a pump truck, and this pump truck includes the pump truck landing leg as above, because this pump truck has adopted all embodiments of above-mentioned pump truck landing leg, has the beneficial effect that all embodiments brought.
In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. A leg arm segment, comprising:
a plurality of cover plates (10) arranged in parallel at intervals;
a web (20) connected between the plurality of cover plates (10);
the cover plate (10) and the web plate (20) are all integrally formed elements with uniform thickness, and a cover plate hollow area (13) and a web plate hollow area (21) which extend along the length direction are respectively arranged on the cover plate (10) and/or the web plate (20).
2. The leg arm segment according to claim 1, characterized in that the web hollow area (21) is arranged in the middle of the web (20) and has a length of 1/2 of the length of the entire web (20), and the distance between the two ends of the web hollow area (21) and the two ends of the web (20) is equal.
3. The leg arm section of claim 1, characterized in that the end of the leg arm section is formed with an insertion opening (40), and the cover plate hollow area (13) is arranged at one end of the cover plate (10) far away from the insertion opening (40) and has a length of 1/2 of the length of the whole cover plate (10).
4. The leg arm segment according to claim 3, characterized in that the web hollow-out area (21) and the cover hollow-out area (13) are each provided with a plurality of through-holes (30) arranged at regular intervals in the length direction.
5. The leg arm segment as claimed in claim 4, characterised in that the area of the through-openings (30) in the hollow-out area (13) decreases in the direction of the insertion opening.
6. The leg arm segment according to claim 4, wherein the minimum distance between any two adjacent through holes (30) is greater than 70mm.
7. The leg arm segment as claimed in claim 4, characterised in that the minimum distance between each through-hole (30) on the web hollow area (21) and the side of the web (20) and the minimum distance between each through-hole (30) on the cover plate hollow area (13) and the side of the cover plate (10) are each greater than 50mm.
8. The leg arm segment according to claim 4, characterized in that a light seal is provided covering the through-going hole (30).
9. A pump truck landing leg, characterized in that, the pump truck landing leg includes a plurality of landing leg arm sections according to any one of claims 1 to 8, and a plurality of landing leg arm sections are connected in a sliding insertion manner.
10. A pump truck characterized in that it comprises a pump truck leg according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222480784.5U CN218021566U (en) | 2022-09-19 | 2022-09-19 | Landing leg arm section, pump truck landing leg and pump truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222480784.5U CN218021566U (en) | 2022-09-19 | 2022-09-19 | Landing leg arm section, pump truck landing leg and pump truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218021566U true CN218021566U (en) | 2022-12-13 |
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ID=84355695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222480784.5U Active CN218021566U (en) | 2022-09-19 | 2022-09-19 | Landing leg arm section, pump truck landing leg and pump truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218021566U (en) |
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2022
- 2022-09-19 CN CN202222480784.5U patent/CN218021566U/en active Active
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