CN202867452U - Telescopic arm - Google Patents
Telescopic arm Download PDFInfo
- Publication number
- CN202867452U CN202867452U CN 201220615464 CN201220615464U CN202867452U CN 202867452 U CN202867452 U CN 202867452U CN 201220615464 CN201220615464 CN 201220615464 CN 201220615464 U CN201220615464 U CN 201220615464U CN 202867452 U CN202867452 U CN 202867452U
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- CN
- China
- Prior art keywords
- forearm
- oil cylinder
- large arm
- cavity
- telescopic boom
- Prior art date
- 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.)
- Expired - Fee Related
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- Shovels (AREA)
- Earth Drilling (AREA)
Abstract
The utility model provides a telescopic arm which comprises a large arm and a small arm and oil cylinders. The large arm comprises a connecting end and an opening end. The telescopic arm is characterized in that a cavity is formed along the opening end direction, and the oil cylinders are connected on the outer wall of the cavity. The small arm comprises an oil cylinder connecting frame, a working end and a sliding end. The sliding end extends into the cavity, and the oil cylinder connecting frame is arranged on one portion, close to the working end, on the small arm, and the oil cylinder connecting frame is connected with the oil cylinders. Due to the fact that a telescopic structure is adopted by the telescopic arm, working scope of the large arm is prolonged. According to engineering machinery taking the telescopic arm as a large arm, working face can be enlarged under the condition that posture positions of a base disc and a rotator are not adjusted, working scope is enlarged compared with traditional machinery in travel, and workload of operators can be reduced.
Description
Technical field
The utility model relates to engineering machinery field, relates to a kind of telescopic boom.
Background technique
Rig in the engineering machinery field, excavators etc. are usually by the chassis, solid of rotation and working portion, wherein working portion is comprised of swing arm and dipper usually, and swing arm links to each other with basic machine, size is larger, usually also be large arm, the terminal dipper that connects of swing arm, dipper also is forearm, and Main Function is to arrange the front end working portion, drilling of drill bit or bucket for example, the actions such as excavation, entrucking.
For working conveniently, oil cylinder is installed on the dipper, enlarge the operating range of dipper, and usually do not have on the large arm.Take rig as example, when the needs drill bit moves when more remote, only can not reach with mobile dipper, must move to make drill bit to arrive new working surface by solid of rotation rotation or chassis whole.
The model utility content
The technological deficiency that broadens the scope of work for overcoming the large not flexible of arm of tradition, the utility model provides a kind of telescopic boom.
Telescopic boom described in the utility model comprises large arm, forearm and oil cylinder, and described large arm comprises connecting end and opening end, it is characterized in that: described opening end direction possesses cavity; Described forearm comprises oil cylinder link press span, working end and sliding end; Described sliding end stretches into described cavity, and described oil cylinder link press span is positioned at the part of close working end on the forearm, and described oil cylinder connects the outer wall of oil cylinder link press span and cavity.
Preferably, be attached with wear-resistant slide block on the described cavity inwall.
Preferably, described cavity is that cross section is the rectangular shape of rectangle.
Further, all be attached with wear-resistant slide block on four of described cavity inwall planes.
Preferably, described oil cylinder has two, and respectively there is an oil cylinder link press span both sides of described forearm, connects respectively one of them of described two oil cylinders.
Preferably, the connecting end of described large arm has large arm axle that through hole is installed, and described large arm axle is installed through hole perpendicular to large arm bearing of trend.
Preferably, the working end of described forearm has the forearm axle that through hole is installed, and described forearm axle is installed through hole perpendicular to the forearm bearing of trend.
Concrete, the degree of depth of described cavity is greater than 1.4 meters.
Preferably, described wear-resistant slide block is nylon block.
Telescopic boom described in the utility model, adopt shrinking structure, prolonged large arm operating range, used telescopic boom described in the utility model as the engineering machinery of large arm, in the situation that chassis and solid of rotation are not adjusted posture position, can enlarge working surface, relatively traditional machine work expanded range on stroke has reduced operator's workload.
Description of drawings
Fig. 1 illustrates the schematic diagram of a kind of embodiment of the present utility model;
Fig. 2 illustrates a kind of embodiment of the present utility model in the generalized section at flexible place;
Fig. 3 illustrates a kind of embodiment schematic diagram of cavity described in the utility model;
The reference character name is called among each figure: 1. arm 2. forearms 3. oil cylinders 4. working ends 5. sliding ends, 6. linkage sections, 7. opening ends, 8. large arm axles are installed through hole 9. forearm axles through hole 10. cavitys 11. nylon blocks 12. oil cylinder link press spans are installed greatly.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
Telescopic boom described in the utility model comprises large arm 1, forearm 2 and oil cylinder 3, and described large arm 1 comprises connecting end 6 and opening end 7, it is characterized in that: described opening end direction possesses cavity 10; Described forearm 2 comprises oil cylinder link press span 12, working end 4 and sliding end 5; Described sliding end stretches into described cavity 10, and described oil cylinder link press span 12 is positioned at the part of close working end on the forearm, and described oil cylinder connects the outer wall of oil cylinder link press span and cavity.
The linkage section of large arm is connected to for example excavator of engineering machinery, on the reversing chassis of rig; the sliding end of forearm stretches into the cavity of large arm from large arm opening end; connect by oil cylinder 3 between large arm and the forearm; and interior flexible at the cavity 10 of large arm by the oil cylinder pushing forearm, reach thus the technique effect that the working end extended length of forearm prolongs, the working end 4 of forearm connects other equipment; bucket for example, drilling rod etc.
Preferably, be attached with wear-resistant slide block 11 on the described cavity inwall.Because forearm is flexible back and forth in large arm cavity 10, wear-resistant slide block is set is conducive to increase the service life.
Concrete, described cavity is that cross section is the rectangular shape of rectangle.
Further, all be attached with wear-resistant slide block 11 on four of described cavity inwall planes.
Preferably, described oil cylinder 3 has two, and respectively there is an oil cylinder link press span 12 both sides of described forearm, connects respectively one of them of described two oil cylinders.Being provided with of two oil cylinders is beneficial to the join strength that strengthens forearm and large arm and the forearm stability when flexible.
Preferably, the connecting end of described large arm has large arm axle that through hole 8 is installed, and described large arm axle is installed through hole 8 perpendicular to large arm 1 bearing of trend.Large arm axle is installed the convenient connecting end 6 with large arm 1 of arranging of through hole 8 and is connected with the reversing chassis of engineering machinery body.
Preferably, the working end 4 of described forearm 2 has the forearm axle that through hole is installed, and described forearm axle is installed through hole 9 perpendicular to forearm 2 bearing of trends.The forearm axle is installed convenient working end 4 and the working equipment with forearm of arranging of through hole 9, bucket for example, the connections such as drilling rod.
Concrete, the degree of depth of described cavity is greater than 1.4 meters.So that the working end the sphere of activities of forearm increases by 1.4 meters.
The nylon block scurf resistance is high, and is with low cost, and preferred, described wear-resistant slide block 11 is nylon block.
Telescopic boom described in the utility model, adopt shrinking structure, prolonged large arm operating range, used telescopic boom described in the utility model as the engineering machinery of large arm, in the situation that chassis and solid of rotation are not adjusted posture position, can enlarge working surface, relatively traditional machine work expanded range on stroke has reduced operator's workload.
Previously described is each preferred embodiment of the present utility model; design parameter among described embodiment and the embodiment only is the model utility proof procedure for clear statement model utility inventor; be not to limit scope of patent protection of the present utility model; scope of patent protection of the present utility model still is as the criterion with its claims; the equivalent structure that every utilization specification of the present utility model and accompanying drawing content are done changes, and in like manner all should be included in the protection domain of the present utility model.
Claims (9)
1. a telescopic boom comprises large arm (1), forearm (2) and oil cylinder (3), and described large arm comprises connecting end (6) and opening end (7), it is characterized in that: described opening end direction possesses cavity (10); Described forearm comprises oil cylinder link press span (12), working end (4) and sliding end (5); Described sliding end stretches into described cavity (10), and described oil cylinder link press span (12) is positioned at the part of close working end (4) on the forearm, and described oil cylinder (3) connects the outer wall of oil cylinder link press span (12) and cavity (10).
2. telescopic boom as claimed in claim 1 is characterized in that: be attached with wear-resistant slide block (11) on described cavity (10) inwall.
3. telescopic boom as claimed in claim 1, it is characterized in that: described cavity (10) is the rectangular shape of rectangle for cross section.
4. telescopic boom as claimed in claim 3 is characterized in that: all be attached with wear-resistant slide block (11) on four planes of described cavity (10) inwall.
5. telescopic boom as claimed in claim 1, it is characterized in that: described oil cylinder (3) has two, and respectively there is an oil cylinder link press span (12) both sides of described forearm, connect respectively one of them of described two oil cylinders (3).
6. telescopic boom as claimed in claim 1, it is characterized in that: the connecting end of described large arm (6) has large arm axle that through hole (8) is installed, and described large arm axle is installed through hole (8) perpendicular to large arm (1) bearing of trend.
7. telescopic boom as claimed in claim 1, it is characterized in that: the working end of described forearm (2) has (4) forearm axle that through hole (9) is installed, and described forearm axle is installed through hole (9) perpendicular to forearm (2) bearing of trend.
8. telescopic boom as claimed in claim 1, it is characterized in that: the degree of depth of described cavity (10) is greater than 1.4 meters.
9. such as telescopic boom as described in claim 2 or 4, it is characterized in that: described wear-resistant slide block (11) is nylon block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220615464 CN202867452U (en) | 2012-11-20 | 2012-11-20 | Telescopic arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220615464 CN202867452U (en) | 2012-11-20 | 2012-11-20 | Telescopic arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202867452U true CN202867452U (en) | 2013-04-10 |
Family
ID=48034174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220615464 Expired - Fee Related CN202867452U (en) | 2012-11-20 | 2012-11-20 | Telescopic arm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202867452U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104071712A (en) * | 2014-07-10 | 2014-10-01 | 太原重工股份有限公司 | Large-tonnage crawler crane |
| CN106015224A (en) * | 2015-03-24 | 2016-10-12 | 斯凯孚公司 | Lifting pillar |
-
2012
- 2012-11-20 CN CN 201220615464 patent/CN202867452U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104071712A (en) * | 2014-07-10 | 2014-10-01 | 太原重工股份有限公司 | Large-tonnage crawler crane |
| CN106015224A (en) * | 2015-03-24 | 2016-10-12 | 斯凯孚公司 | Lifting pillar |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20131120 |