CN202265376U - Fire engine and telescopic arm thereof - Google Patents
Fire engine and telescopic arm thereof Download PDFInfo
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- CN202265376U CN202265376U CN2011203311339U CN201120331133U CN202265376U CN 202265376 U CN202265376 U CN 202265376U CN 2011203311339 U CN2011203311339 U CN 2011203311339U CN 201120331133 U CN201120331133 U CN 201120331133U CN 202265376 U CN202265376 U CN 202265376U
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- cover plate
- upper cover
- web
- lower cover
- telescopic boom
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Abstract
The utility model discloses a telescopic arm. The telescopic arm comprises a plurality of arm segments nested from inside to outside and sliders arranged between two adjacent arm segments, wherein each arm segment comprises an upper cover plate, a lower cover plate, and a left web plate and a right web plate which are arranged between the upper and the lower cover plates; the thicknesses of the left and the right web plates are smaller than those of the upper and the lower cover plates; in the cross-sectional view of the upper cover plate, a left inclined part and a right inclined part extend downwards from the two ends of the horizontal segment of the upper cover plate respectively, and a left vertical part and a right vertical part extend downwards from the end parts of the left and the right inclined parts respectively; and the lower and the upper cover plates have the same shape and are symmetrical relative to the horizontal central plane of the left and the right web plates. The sliders are arranged between the left inclined part and the right inclined part of two adjacent arm segments. The telescopic arm is operable to increase the utilization rate of the two side materials of the arm segments and improve the stability of stressed parts of the upper and the lower cover plates. The utility model further provides a fire engine comprising the telescopic arm.
Description
Technical field
The utility model relates to the fire extinguishing tanker field, is specifically related to a kind of fire extinguishing tanker and telescopic boom thereof.
Background technology
Telescopic boom is widely used in engineering machinery field, is generally box-structure, constitutes by the inside and outside joint arm of more piece different cross section size is nested, through placing the slide block between the inside and outside joint arm, realizes flexible relatively between the arm joint.Known telescopic boom cross section is quadrangle and oval U-shaped (referring to Fig. 1 and Fig. 2), and its arm joint forms by upper cover plate and lower cover welding, and weld seam is positioned at the telescopic boom both sides, and symmetrically.
With the cross section is that tetragonal telescopic boom is an example, and Fig. 3 is its upper cover plate front view, and Fig. 4 is the lower cover front view.Can know by figure; Upper cover plate 1 extends to form a left side vertically section 12 and right vertically section 13 downwards from its horizontal segment 11 two ends; Lower cover 2 extends upward the left vertically section 22 and right vertical section 23 of formation from its horizontal segment 21 two ends; The horizontal segment 11 of upper cover plate and a left side be section 12, right vertically between the section 13 vertically, and vertically section 22, the right circular arc that vertically is between the section 23 connect the horizontal segment 21 of lower cover and a left side.Slide block 5 is arranged between the horizontal segment 11 of adjacent two joint arm upper cover plates 1 and between the horizontal segment 21 of lower cover 2.When telescopic boom stretches out stroke when longer; The arm joint mainly receives the moment of flexure effect; Can know from calculating and measured result; The upper cover plate horizontal segment 11 that is contacted with slide block 5 is stressed bigger, and lower cover horizontal segment 21 takes second place, and vertically vertically section 22 and right vertically section 23 are stressed very little section 12, right vertically section 13 and a lower cover left side upper cover plate left side.In the practical application; Telescopic boom arm joint is welded by the upper and lower cover plate of same thickness often; Therefore a upper cover plate left side vertically section 12, right vertically section 13 and a lower cover left side vertically section 22, right vertically section 23 bending strengths have more more than neededly, cause telescopic boom two layers of material degree of utilization not high.Likewise, also there is this problem in the telescopic boom in oval U-shaped cross section.In addition, for the telescopic boom in oval U-shaped cross section, the stress that forms at 2 two fillet places of lower cover is not high yet, and material property is not fully exerted yet here.
In view of this, need a kind of telescopic boom badly and solve the existing not high problem of telescopic boom stock utilization.
The utility model content
To above-mentioned defective, the technical matters that the utility model solves is, a kind of telescopic boom is provided, and utilizes this telescopic boom can improve arm joint material at opposite sides degree of utilization.On this basis, the utility model also provides a kind of fire extinguishing tanker with this telescopic boom.
The telescopic boom that the utility model provides; Comprise the arm joint of nested setting inside and outside the more piece and place the slide block between the adjacent inside and outside joint arm; Wherein, Every joint arm comprises upper cover plate and lower cover, between said upper cover plate and said lower cover, be provided with left web and right web, and the thickness of said left web and said right web is less than the thickness of said upper cover plate and said lower cover.
Preferably, in the cross-sectional plane of said upper cover plate, extend to form left bank section and right bank section respectively downwards, and extend to form a left side vertically section and right vertically section respectively downwards from the end of said left bank section and right bank section from its horizontal segment two ends; Said lower cover is identical with the shape of said upper cover plate, and symmetrical with respect to the horizontal central plane of left web and right web; Slide block is arranged between the left bank section of adjacent two joint arm upper cover plates and between the right bank section, and between the left bank section of lower cover and between the right bank section.
Preferably, adopt arc transition between every two the adjacent segmentations of said upper cover plate and said lower cover.
Preferably, said left web is connected through welding manner with lower cover with said upper cover plate with right web, and single face butt welding single V groove with root face is adopted in welding.
Preferably, said left web and right web adopt inner plane to align with the docking structure form of said upper cover plate and lower cover.
The fire extinguishing tanker that the utility model provides adopts foregoing telescopic boom.
Compared with prior art, the utility model is provided with left web and right web between the upper cover plate of every joint arm and lower cover, and the thickness of left web and right web is less than the thickness of upper cover plate and lower cover.Do the time spent when telescopic boom receives moment of flexure, left web and right web are stressed less with respect to upper cover plate and lower cover, so adopt the steel plate of less thickness can satisfy the bending resistance requirement, help improving the degree of utilization of material; In addition, this programme can effectively reduce the telescopic boom deadweight, for improving the complete machine performance effective guarantee is provided.
In the preferred version of the utility model, upper cover plate comprises horizontal segment, left and right tilting section and left and right vertical section, and lower cover is identical with the upper cover plate shape, and about the horizontal central plane symmetry of left and right web.Adopt this structure to make the cross section of arm joint roughly be octagon; Slide block can be arranged between the left bank section of adjacent two joint arm upper cover plates and lower covers and between the right bank section; Thereby increase the slide block and the area of contact of cover plate up and down; Help to improve the stability of cover plate compression zone position up and down, make big leap ahead of extension elongation of telescopic boom arm joint.
In another preferred version of the utility model, adopt arc transition between every two the adjacent segmentations of upper cover plate and lower cover, can avoid producing stress concentration, help increasing the stability of telescopic boom in the segmentation junction.
Description of drawings
Fig. 1 is the quadrangle arm joint schematic cross-section of telescopic boom in the prior art;
Fig. 2 is the oval U type arm joint schematic cross-section of telescopic boom in the prior art;
Fig. 3 is the front view of upper cover plate among Fig. 1;
Fig. 4 is the front view of lower cover among Fig. 1;
Fig. 5 is the arm joint schematic cross-section of the said telescopic boom of first embodiment;
Fig. 6 is the arm joint schematic cross-section of the said telescopic boom of second embodiment;
Fig. 7 is the front view of upper cover plate among Fig. 6;
Fig. 8 is the front view of lower cover among Fig. 6;
Fig. 9 is the schematic cross-section of the said telescopic boom of second embodiment;
Figure 10 is the integral structure scheme drawing of fire extinguishing tanker described in the specific embodiment.
Among the figure:
The specific embodiment
The core design of the utility model is left web and right web are set between the upper cover plate of the every joint arm of telescopic boom and lower cover, and the thickness of left web and right web is less than the thickness of upper cover plate and lower cover.Do the time spent when telescopic boom receives moment of flexure, left web and right web are stressed less with respect to upper cover plate and lower cover, thus adopt the steel plate of less thickness can satisfy the bending resistance requirement, thus improve the degree of utilization of material.
In order to make those skilled in the art better understand the technical scheme of the utility model, do further to specify below in conjunction with Figure of description.
Compared with prior art, the telescopic boom arm joint that the utility model provides has also increased web except comprising upper cover plate and lower cover between upper and lower cover plate, specifically see also Fig. 5, and this figure is the arm joint schematic cross-section of the said telescopic boom of first embodiment.Can know that by figure telescopic boom arm joint is formed by upper cover plate 1, lower cover 2 and left web 3,4 weldings of right web, and left web 3 adopts than upper cover plate 1 and the little steel plate of lower cover 2 thickness with right web 4.When telescopic boom stretches out stroke when longer, the arm joint mainly receives the moment of flexure effect, at this moment; The upper cover plate 1 stressed maximum that contacts with slide block; Lower cover 2 takes second place, and left web 3 and right web 4 are stressed less, so web adopts less thickness of slab can satisfy the bending resistance requirement; Compare with the telescopic boom that the welding of cover plate up and down of the identical thickness of slab of available technology adopting forms, greatly improved stock utilization.In addition, when satisfying the bending resistance requirement, web adopts less thickness of slab, can make telescopic boom weight saving 5%-10%, improves the telescopic boom overall performance.
As the vitals that connects telescopic boom arm joint, the stressing conditions of slide block is very complicated, and the contact conditions of itself and cover plate directly influences the local stability of telescopic boom.For reducing the influence of slide block to the telescopic boom local stability; The utility model provides a kind of telescopic boom of octagonal cross-section; Specifically please in the lump referring to Fig. 6, Fig. 7 and Fig. 8, wherein, Fig. 6 is the arm joint schematic cross-section of the said telescopic boom of second embodiment; Fig. 7 is the front view of upper cover plate among Fig. 6, and Fig. 8 is the front view of lower cover among Fig. 6.Can know by figure, in the cross-sectional plane of upper cover plate 1, extend to form left bank section 14 and right bank section 15 respectively downwards from its horizontal segment 11 two ends, and extend to form a left side vertically section 12 and right vertically section 13 respectively downwards from the end of left bank section 14 and right bank section 15; Lower cover 2 is identical with upper cover plate 1 shape; In its cross-sectional plane, extend upward respectively and form left bank section 24 and right bank section 25, and extend upward respectively from the end of left bank section 24 and right bank section 25 and to form a left side vertically section 22 and right vertically section 23 from its horizontal segment 21 two ends; Upper cover plate 1 and the horizontal central plane symmetry of lower cover 2 about left web 3 and right web 4.Slide block 5 is arranged between the left bank section 14 of adjacent two joint arm upper cover plates 1 and between the right bank section 15; Likewise, also be furnished with slide block 5 between the left bank section 24 of lower cover 2 and between the right bank section 25, specifically see also Fig. 9; This figure is the section drawing of the said telescopic boom of second embodiment; This arrangement has increased the area of contact of slide block 5 and upper cover plate 1, lower cover 2, helps to improve the stability of cover plate compression zone position up and down, makes extension elongation big leap ahead of telescopic boom arm joint.In addition, this arrangement of slide block 5 can also save the space of positive upside of cover plate and positive downside, supplies other members uses in the telescopic boom, thereby increases the utilizability in arm internode crack.Compared with prior art, when using the slide block of same thickness in the telescopic boom, this arrangement can make arm internode crack reduce as far as possible, and arm joint cross section reduces thereupon, and weight effectively reduces.
Be the stability in the increase telescopic boom telescopic process, upper cover plate 1 and lower cover 2 adopt arc transition to connect between every two adjacent segmentations in cross-sectional plane separately, can avoid the generation stress concentration in the segmentation junction like this.
Connection mode in this programme between left web 3 and right web 4 and upper cover plate 1 and the lower cover 2 adopts welding, so both can practice thrift metallic material, cost-cutting, can also guarantee the Joint strenght between each member.For guaranteeing welding quality and being convenient to welding processing, adopt single face butt welding single V groove with root face, the docking structure form is the inner plane alignment.
In addition, telescopic boom arm joint both sides respectively are provided with the twice weld seam, in cover plate up and down and welding process that web docks, can reduce the hot input of local welding, reduce telescopic boom length direction welding stress saves intensity to whole arm influence greatly; Simultaneously, the weld seam of symmetry welding can solve the problem of welding deformation effectively.
Except that above-mentioned telescopic boom, the utility model also provides a kind of fire extinguishing tanker with this telescopic boom, specifically sees also Figure 10, and this figure is the integral structure scheme drawing of said fire extinguishing tanker.
Need to prove that the main function components and the prior art of this fire extinguishing tanker are identical, owing to those of ordinary skills can realize based on prior art, so this paper repeats no more.
The above only is the preferred implementation of the utility model; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; Can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection domain of the utility model.
Claims (6)
1. telescopic boom; Comprise the arm joint of nested setting inside and outside the more piece and place the slide block (5) between the adjacent inside and outside joint arm; Wherein, every joint arm comprises upper cover plate (1) and lower cover (2), it is characterized in that; Between said upper cover plate (1) and said lower cover (2), be provided with left web (3) and right web (4), and the thickness of said left web (3) and said right web (4) is less than the thickness of said upper cover plate (1) and said lower cover (2).
2. telescopic boom according to claim 1; It is characterized in that; In the cross-sectional plane of said upper cover plate (1); Extend to form left bank section (14) and right bank section (15) respectively downwards from its horizontal segment (11) two ends, and extend to form a left side vertically section (12) and right vertically section (13) respectively downwards from the end of said left bank section (14) and right bank section (15); Said lower cover (2) is identical with the shape of said upper cover plate (1), and symmetrical with respect to the horizontal central plane of left web (3) and right web (4); Slide block (5) is arranged between the left bank section (14) of adjacent two joint arm upper cover plates (1) and between the right bank section (15), and between the left bank section (24) of lower cover (2) and between the right bank section (25).
3. telescopic boom according to claim 2 is characterized in that, adopts arc transition between two every adjacent segmentations of said upper cover plate (1) and said lower cover (2).
4. telescopic boom according to claim 1 and 2 is characterized in that, said left web (3) is connected through welding manner with lower cover (2) with said upper cover plate (1) with right web (4), and single face butt welding single V groove with root face is adopted in welding.
5. telescopic boom according to claim 4 is characterized in that, said left web (3) and right web (4) adopt inner plane to align with the docking structure form of said upper cover plate (1) and lower cover (2).
6. a fire extinguishing tanker is characterized in that, adopts each described telescopic boom in the claim 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203311339U CN202265376U (en) | 2011-09-05 | 2011-09-05 | Fire engine and telescopic arm thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203311339U CN202265376U (en) | 2011-09-05 | 2011-09-05 | Fire engine and telescopic arm thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202265376U true CN202265376U (en) | 2012-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203311339U Expired - Lifetime CN202265376U (en) | 2011-09-05 | 2011-09-05 | Fire engine and telescopic arm thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202265376U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900106A (en) * | 2012-09-29 | 2013-01-30 | 江苏柳工机械有限公司 | Swing arm of skid steering loader |
| CN103395706A (en) * | 2013-08-12 | 2013-11-20 | 徐州重型机械有限公司 | Crane and telescopic arm thereof |
| CN103832314A (en) * | 2012-11-26 | 2014-06-04 | 徐州徐工随车起重机有限公司 | Road wrecker with U-type hanging arm |
| CN113415741A (en) * | 2021-06-30 | 2021-09-21 | 江苏徐工工程机械研究院有限公司 | Arm support, design method thereof and engineering machinery |
| CN114642849A (en) * | 2022-05-23 | 2022-06-21 | 徐工消防安全装备有限公司 | Telescopic boom structure and elevating fire truck thereof |
-
2011
- 2011-09-05 CN CN2011203311339U patent/CN202265376U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900106A (en) * | 2012-09-29 | 2013-01-30 | 江苏柳工机械有限公司 | Swing arm of skid steering loader |
| CN103832314A (en) * | 2012-11-26 | 2014-06-04 | 徐州徐工随车起重机有限公司 | Road wrecker with U-type hanging arm |
| CN103395706A (en) * | 2013-08-12 | 2013-11-20 | 徐州重型机械有限公司 | Crane and telescopic arm thereof |
| CN103395706B (en) * | 2013-08-12 | 2015-09-16 | 徐州重型机械有限公司 | Hoisting crane and telescopic boom thereof |
| CN113415741A (en) * | 2021-06-30 | 2021-09-21 | 江苏徐工工程机械研究院有限公司 | Arm support, design method thereof and engineering machinery |
| CN114642849A (en) * | 2022-05-23 | 2022-06-21 | 徐工消防安全装备有限公司 | Telescopic boom structure and elevating fire truck thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170213 Address after: 221000 Jiangsu Province, Xuzhou City Yunlong District No. 165 Patentee after: Xugong fire safety equipment Co. Ltd. Address before: 221004 Xuzhou, Zhejiang Province, Jiangsu Road No. 165 Patentee before: Xuzhou Heavy Machinery Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120606 |