CN202482017U - Aloft working engineering machinery and telescopic arm thereof - Google Patents
Aloft working engineering machinery and telescopic arm thereof Download PDFInfo
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- CN202482017U CN202482017U CN201120527961XU CN201120527961U CN202482017U CN 202482017 U CN202482017 U CN 202482017U CN 201120527961X U CN201120527961X U CN 201120527961XU CN 201120527961 U CN201120527961 U CN 201120527961U CN 202482017 U CN202482017 U CN 202482017U
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- telescopic boom
- jib
- engineering machinery
- carrying roller
- idler assembly
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Abstract
The utility model discloses a telescopic arm used for aloft working engineering machinery. The telescopic arm comprises at least two mutual nested arm frames and carrier roller components installed on the heads of the arm frames. Each carrier roller component comprises a carrier roller supporting frame and two carrier rollers, wherein the carrier rollers are connected with the carrier roller supporting frame in a hinged mode. The left side and the right side of the lower end of the head of each arm frame are respectively connected with each carrier roller component in a hinged mode. Due to the fact that the modular design of the carrier roller components is adopted, the telescopic arm is simple in structure and compact and occupies small space inside the arm frame. A telescopic chain wheel can be assembled between the head of the arm frame and the two groups of carrier roller components. The height of the arm frame is reduced and the space utilization rate inside the arm frame is effectively improved. The aloft working engineering machinery which includes the telescopic arm is further disclosed.
Description
Technical field
The utility model relates to the high-altitude operation engineering machinery field, particularly relates to the telescopic boom on a kind of high-altitude operation engineering machinery equipment.In addition, the utility model also relates to a kind of high-altitude operation engineering machinery that comprises above-mentioned telescopic boom.
Background technology
High-altitude operation engineering machinery has chassis, turntable, jib usually, and jib is generally through telescopic oil cylinder and telescopic system and realizes synchronous or asynchronous flexible telescopic boom.Operating personal can be realized aloft work at the ground control telescopic boom.For example, aerial platform jib top is provided with workplatform, and fire water monitor is equipped with on fire extinguishing tanker jib top, high-altitude, and operating personal can be at operating console upper suspension arm frame to realize water spray, transportation work personnel, to implement functions such as rescue and other aloft work.Idler assembly is the vitals of high-altitude operation engineering machinery such as high lifting kind fire extinguishing tanker, is the supporting construction between the mutually nested telescopic jib, is assemblied in jib inside, in order to realize the flexible of jib.
At present, the idler assembly structure that telescopic boom adopted is as shown in Figure 1, and Fig. 1 is a kind of structural representation of idler assembly of typical telescopic boom.
This idler assembly mainly comprises two carrying roller support plates; Two circular shafts; Two axle sleeves and four carrying rollers, its middle idler roller support plate 101 has three manholes, and one of them manhole is positioned at the middle part of carrying roller support plate; Two other manhole is this manhole front and back symmetric arrangement relatively, and is as shown in Figure 1.Carrying roller 102 is welded on axle sleeve 111 1 ends; Link together with axle sleeve 111 and circular shaft 104 being welded as single-piece carrying roller 102 through bearing 103; Bearing 103 is welded as single-piece carrying roller 102 in order to support and guiding and rotates relative to circular shaft 104 with axle sleeve 111, and the head of carrying roller 102 is the end of the bigger end of cross-sectional plane near circular shaft 104; The outer ring of bearing 103 is installed among the annular inner wall of carrying roller 102, and the inner ring of bearing 103 is set in the circular shaft face outside of circular shaft 104; The other end at circular shaft 104 is installed another carrying roller in the same way, and this carrying roller is welded on the other end of axle sleeve 111.The rear side manhole of two carrying roller support plates is crossed at the two ends of circular shaft 104 respectively, has groove at the two ends of circular shaft 104, in order to place back-up ring 110, with the stationkeeping of circular shaft 104 and carrying roller support plate 101.In addition, be provided with adjustable ring 106 near a side of carrying roller support plate 101 at bearing 103, in order to the endplay of adjust a bearing 103 and prevent bearing 103 and carrying roller support plate 101 between contact friction.Two carrying rollers are welded at another axle sleeve two ends; Be installed together being welded as single-piece axle sleeve and carrying roller and another circular shaft with above-mentioned same way as; The front side manhole of two carrying roller support plates is passed at these circular shaft two ends respectively, with the position of fixing this circular shaft of back-up ring and carrying roller support plate 101.
Above-mentioned idler assembly and jib (not shown) are fixed circular shaft 105 and jib with axle head plate 107, packing ring 109 and bolt 108 through circular shaft 105 hinged securement.
Above-mentioned idler assembly complex structure, it is big to take the jib head space; Carrying roller 102 and axle sleeve 111 weld togethers make that the carrying roller assembly technology is complicated and are unfavorable for the dismounting and the maintenance of carrying roller; In addition, because fixed between carrying roller, span is fixing unadjustable between carrying roller, so this idler assembly only is applicable to the telescopic boom that matches with its size, and is not suitable for the telescopic boom of other size, commonality is poor.
Therefore, how to improve the structure of telescopic boom idler assembly, make the simple in structure, compact of idler assembly, it is little to take the jib head space, is the present technical issues that need to address of those skilled in the art.
The utility model content
The purpose of the utility model provides a kind of telescopic boom, and the idler assembly of this telescopic boom is simple in structure, compact, and it is little to take the jib head space.Another purpose of the utility model provides a kind of high-altitude operation engineering machinery that comprises above-mentioned telescopic boom.
For solving the problems of the technologies described above; The utility model provides a kind of telescopic boom, is used for high-altitude operation engineering machinery, comprises the mutually nested jib of at least two joints; And the idler assembly that is assemblied in said jib head; Said idler assembly comprises a roller rack and two carrying rollers, and said carrying roller and said roller rack are articulated and connected, and the left and right sides, lower end of said jib head is hinged said idler assembly respectively.
Preferably, said telescopic boom also comprises flexible sprocket wheel, and said flexible sprocket wheel is arranged between two groups of idler assemblies of said jib head lower end.
Preferably, said idler assembly is articulated and connected through bearing pin and combination bearing and said jib.
Preferably, said bearing pin is through hubcap and screw retention.
Preferably, lubricating cup is equipped with in said bearing pin outer end.
Preferably, said carrying roller is articulated and connected through circular shaft and bearing and said roller rack.
Preferably, said circular shaft is through hubcap and screw retention.
The utility model also provides a kind of high-altitude operation engineering machinery, comprises above-mentioned each described telescopic boom.
Preferably, said high-altitude operation engineering machinery is specially elevating fire truck or aerial platform.
Above-mentioned relatively technical background; The telescopic boom that the utility model provides has been changed into idler assembly split type on the basis of existing technology by integral type; The difference Hinge linked supporting roller assembly in the left and right sides, lower end of jib head; Said idler assembly is hinged on the jib head through bearing pin and combination bearing, with hubcap and the said bearing pin of screw retention; Said idler assembly comprises a roller rack and two carrying rollers, and said carrying roller is connected in said roller rack through circular shaft and bearing hinge connection, with hubcap and the said circular shaft of screw retention.This split type idler assembly is compared with idler assembly of the prior art, and is simple in structure, compactness, and it is little to take up room.In the prior art, flexible sprocket wheel is assemblied in jib top, makes mutually nested jib gap increase; Increased the height of telescopic boom; And the idler assembly that the utility model provided adopts the branch body structure, makes that the space between jib head two idler assemblies is vacant, and then can be assemblied in flexible sprocket wheel between jib head two idler assemblies; Rationally utilize the jib inner space, reduced the height of telescopic boom effectively.
Because this idler assembly modular design, span can be regulated arbitrarily between idler assembly, so this idler assembly goes for the jib of different size, and its highly versatile.
Since between the carrying roller of this idler assembly and the roller rack for being articulated and connected, make carrying roller dismounting and keep in repair more convenient.
Description of drawings
Fig. 1 is the structural representation of the idler assembly that telescopic boom adopted in the prior art;
Fig. 2 is the structural representation of a kind of specific embodiment of idler assembly of telescopic boom that the utility model provides;
Fig. 3 is the structural representation of telescopic boom that the utility model provides a kind of specific embodiment middle idler roller assembly and jib.
The specific embodiment
The core of the utility model provides a kind of telescopic boom, is used for high-altitude operation engineering machinery.The idler assembly of this telescopic boom simple in structure, compact, it is little to take the jib inner space, can improve jib inner space degree of utilization effectively.Another core of the utility model provides a kind of high-altitude operation engineering machinery that comprises above-mentioned telescopic boom.
In order to make those skilled in the art person understand the utility model scheme better, the utility model is done further to specify below in conjunction with the accompanying drawing and the specific embodiment.
The related nouns of locality such as front, rear, left and right among this paper are to be the benchmark definition with institute's reference-view, should be appreciated that the use of the said noun of locality should not limit the scope that the application asks for protection.
Please refer to Fig. 2, Fig. 2 is the structural representation of a kind of specific embodiment of idler assembly of telescopic boom that the utility model provides.
In a kind of specific embodiment, telescopic boom that the utility model provides comprises the mutually nested jib of at least two joints, and the idler assembly 1 that is assemblied in jib 2 heads, and said idler assembly 1 is used to support the relative motion between the jib 2.
Idler assembly 1 comprises a roller rack and two carrying rollers.Said roller rack 11 comprises axle sleeve and the carrying roller support plate that is fixedly installed in the axle sleeve two ends; Have three manholes on the carrying roller support plate; The manhole that wherein is positioned at the middle part is captiveed joint with axle sleeve, and two other manhole is with respect to symmetric arrangement before and after this middle part manhole, and is as shown in Figure 2.Distance between the two carrying roller support plates is slightly larger than the length of carrying roller, can guarantee that the rotation of carrying roller gets final product.
Roller rack 11 is articulated and connected with carrying roller 12.Can roller rack 11 and carrying roller 12 be articulated and connected through multiple concrete mode, a kind of comparatively easy and failure-free mode is through circular shaft 13 and bearing 14 roller rack 11 and carrying roller 12 to be articulated and connected.Particularly; Circular shaft 13 crosses the rear side manhole of opposite side carrying roller support plate in annular inner wall and the roller rack 11 of rear side manhole, carrying roller of a side carrying roller support plate in the roller rack 11 successively; Between carrying roller 12 and circular shaft 13, bearing 14 is set, is used to support and guide the rotation of carrying roller 12.The inner ring of bearing 14 can be set in the axial plane outside of circular shaft 13, and the outer ring of bearing 14 can be installed in the annular inner wall of carrying roller 12.For the endplay of adjust a bearing 14 and reduce bearing 14 and the carrying roller support plate between contact friction, between bearing 14 and carrying roller support plate, be provided with adjustable ring 15.Here need to prove that the head of two carrying rollers is that the bigger end of carrying roller cross-sectional plane is towards the same side in fitting process.
Circular shaft 13 is fixing with screw 17 through hubcap 16.At circular shaft 13 near on the end of carrying roller 12 heads one side and the corresponding carrying roller support plate and have the screw hole that matches with screw 17 respectively on the hubcap 16; The screw hole of circular shaft 13 is vertically arranged; Screw hole horizontal arrangement on the carrying roller support plate is in its manhole both sides, and the screw hole on the hubcap 16 is corresponding with screw hole location on circular shaft 13 ends and the carrying roller support plate.Respectively circular shaft 13 and hubcap 16 and hubcap 16 are fixed with the carrying roller support plate through screw 17.Here need to prove that fixedly the arrangement form of the mode of circular shaft 13 and screw hole is not limited to above-mentioned said mode, as long as be provided with rationally and can prevent that circular shaft 13 from coming off.
Another carrying roller is articulated and connected in the manhole of the front side of said roller rack with above-mentioned same way as, repeats no more at this.
Please refer to Fig. 3, Fig. 3 is the structural representation of telescopic boom that the utility model provides a kind of specific embodiment middle idler roller assembly and jib.
Above-mentioned idler assembly 1 is assemblied in jib 2 heads, and jib 2 heads comprise right supported plate 21, right riser 24, left supported plate 22, left riser 23 and base plate 25.Right supported plate 21, right riser 24, left supported plate 22, left riser 23 and base plate 25 are captiveed joint with jib 2 heads through welding.The structure left-right symmetric of the support that right supported plate 21, right riser 24, left supported plate 22, left riser 23 and base plate 25 are formed.Lower end at left supported plate 22, left riser 23, right riser 24 and right supported plate 21 is respectively equipped with manhole, and is as shown in Figure 3, and said four manholes are coaxial.Difference Hinge linked supporting roller assembly 1 between left supported plate 22 and left riser 23 and right supported plate 21 and right riser 24; And the head of the carrying roller in the idler assembly 1 12 is all towards the outside of support 21; Carrying roller 12 heads of the idler assembly of promptly between left supported plate 22 and left riser 23, installing 1 are towards the left side, and carrying roller 12 heads of the idler assembly of between right supported plate 21 and right riser 24, installing 1 are towards the right side.
Can idler assembly 1 and jib 2 be articulated and connected through multiple concrete mode.Wherein a kind of comparatively easy and failure-free mode is through bearing pin 26 and combination bearing 18 (being shown among Fig. 2) idler assembly 1 and jib 2 heads to be articulated and connected.
Particularly, bearing pin 26 crosses the through hole of left supported plate 22, the annular inner wall of roller rack 11 bottom bracket axles and the through hole of left riser 23 successively.Between bearing pin 26 and roller rack 11 axle sleeves, be provided with combination bearing 18, the inner ring of combination bearing 18 can be set in the axial plane outside of said bearing pin 26, and the outer ring of combination bearing 18 can be installed among the annular inner wall of axle sleeve of said roller rack 11.
In order to prevent that bearing pin 26 from coming off, can bearing pin be fixed through hubcap 27 and screw 28.Certainly, the mode of fixed pin shaft 26 is not limited thereto.On the correspondence position of the outer end of bearing pin 26, left supported plate 22 lower ends and hubcap 27, have the screw hole that cooperates with screw 28 respectively, the screw hole on the hubcap 27 and bearing pin 26 are corresponding with screw hole location on the left supported plate 22.Respectively that bearing pin 26 is fixing with left supported plate 22 with hubcap 27 and hubcap 27 through screw 28.
Further, can also lubricating cup 29 be installed, be convenient to add lubricating oil, be used for the lubricated of combination bearing 18 in the outer end of bearing pin 26.
Accordingly, between right supported plate 21 and right riser 24,, repeat no more at this with hinged another group idler assembly of above-mentioned same way as.
After adopting above-mentioned split type idler assembly, the space between two idler assemblies of jib 2 head lower ends is vacant, can be used to assemble the flexible sprocket wheel of telescopic boom, and then reduces the jib height.And in the prior art,, and then make flexible sprocket wheel be assemblied in jib top exactly because the integrated design of idler assembly makes the jib head not have the flexible sprocket wheel of redundant space assembling, increased the height of telescopic boom.Therefore; The idler assembly of telescopic boom that the utility model provides except have existing idler assembly safety, reliable, to the advantages such as the flexible friction drag of jib is little; Also have simple in structure, compact; It is little to take the interior space of jib, advantages such as weight saving, and improved the jib space availability ratio of inner effectively.
On the other hand; Because the idler assembly of telescopic boom that the utility model provides adopts split-type design; Span between idler assembly can be regulated arbitrarily, thus the telescopic jib that the utility model provides the idler assembly of telescopic boom to go for arbitrary dimension, its highly versatile.
In addition,, the most important thing is that welding is unfixing, make the dismounting of carrying roller and maintenance to carry out easily because the utility model provides the idler assembly assembly technology of telescopic boom simple.
Except above-mentioned telescopic boom, the utility model also provides a kind of high-altitude operation engineering machinery that comprises above-mentioned telescopic boom, and the structure of these other each several parts of high-altitude operation engineering machinery please refer to prior art, and this paper repeats no more.
Particularly, above-mentioned high-altitude operation engineering machinery is elevating fire truck or aerial platform.
More than high-altitude operation engineering machinery and telescopic boom thereof that the utility model provided have been carried out detailed introduction.Used concrete example among this paper the principle and the embodiment of the utility model are set forth, the explanation of above embodiment just is used to help to understand the method and the core concept thereof of the utility model.Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (9)
1. telescopic boom; Be used for high-altitude operation engineering machinery; Comprise the mutually nested jib of at least two joints, and the idler assembly (1) that is assemblied in said jib (2) head, it is characterized in that; Said idler assembly (1) comprises a roller rack and two carrying rollers, and said carrying roller (12) is articulated and connected with said roller rack (11); The left and right sides, lower end of said jib (2) head is hinged said idler assembly (1) respectively.
2. telescopic boom as claimed in claim 1 is characterized in that said telescopic boom also comprises flexible sprocket wheel, and said flexible sprocket wheel is arranged between two groups of idler assemblies of said jib (2) head lower end.
3. telescopic boom as claimed in claim 1 is characterized in that, said idler assembly (1) is articulated and connected through bearing pin (26) and combination bearing (18) with said jib (2).
4. telescopic boom as claimed in claim 3 is characterized in that, said bearing pin (26) is fixing through hubcap (27) and screw (28).
5. telescopic boom as claimed in claim 3 is characterized in that, lubricating cup (29) is equipped with in said bearing pin (26) outer end.
6. telescopic boom as claimed in claim 1 is characterized in that, said carrying roller (12) is articulated and connected through circular shaft (13) and bearing (14) with said roller rack (11).
7. telescopic boom as claimed in claim 6 is characterized in that, said circular shaft (13) is fixing through hubcap (16) and screw (17).
8. a high-altitude operation engineering machinery is characterized in that, comprises like each described telescopic boom of claim 1 to 7.
9. high-altitude operation engineering machinery as claimed in claim 8 is characterized in that said high-altitude operation engineering machinery is specially elevating fire truck or aerial platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120527961XU CN202482017U (en) | 2011-12-15 | 2011-12-15 | Aloft working engineering machinery and telescopic arm thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120527961XU CN202482017U (en) | 2011-12-15 | 2011-12-15 | Aloft working engineering machinery and telescopic arm thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202482017U true CN202482017U (en) | 2012-10-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120527961XU Expired - Fee Related CN202482017U (en) | 2011-12-15 | 2011-12-15 | Aloft working engineering machinery and telescopic arm thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202482017U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103495267A (en) * | 2013-10-11 | 2014-01-08 | 徐州重型机械有限公司 | Arm head connection device of telescopic arm, telescopic arm for fire fighting truck and fire fighting truck |
| CN107838897A (en) * | 2016-09-19 | 2018-03-27 | 广东科达洁能股份有限公司 | The improved storage base device of structure |
-
2011
- 2011-12-15 CN CN201120527961XU patent/CN202482017U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103495267A (en) * | 2013-10-11 | 2014-01-08 | 徐州重型机械有限公司 | Arm head connection device of telescopic arm, telescopic arm for fire fighting truck and fire fighting truck |
| CN103495267B (en) * | 2013-10-11 | 2015-12-16 | 徐州重型机械有限公司 | Telescopic arm arm head jockey, for the telescopic arm of fire fighting truck and fire fighting truck |
| CN107838897A (en) * | 2016-09-19 | 2018-03-27 | 广东科达洁能股份有限公司 | The improved storage base device of structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170210 Address after: 221004 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. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121010 Termination date: 20191215 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |