CN102249170B - Main jib structure for fork installing machine - Google Patents
Main jib structure for fork installing machine Download PDFInfo
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- CN102249170B CN102249170B CN 201110198843 CN201110198843A CN102249170B CN 102249170 B CN102249170 B CN 102249170B CN 201110198843 CN201110198843 CN 201110198843 CN 201110198843 A CN201110198843 A CN 201110198843A CN 102249170 B CN102249170 B CN 102249170B
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Abstract
The invention discloses a main jib structure for a fork installing machine and belongs to main jib structures of engineering machinery. The upper cover plate of a main jib is welded at the inner side of a U-shaped main jib plate to form a high-strength box structure; second shaft sleeves are respectively welded on the two sides of the rear surface of the wallboard of the U-shaped main jib plate; a bend cover plate is welded on one side of the rear surface of the wallboard of the U-shaped main jib plate; a crescent plate is welded on the rear surface of a main shaft sleeve at the upper face of the wallboard of the U-shaped main jib plate; a rear web plate, a rear inner web plate and a forth shaft sleeve are respectively welded on one side of the rear surface of the wallboard of the U-shaped main jib plate; cylinder support plates are symmetrically welded on a left web plate and a right web plate; third shaft sleeves are welded on the left web plate and the right web plate; and a front lower rib plate is welded in the middle of a front plate at the lower part of the front end of the U-shaped main jib plate. The main jib structure of the fork installing machine has the advantages that the U-shaped main jib plate and the upper cover plate are combined to greatly reduce welding lines; each web plate is in a curved shape combined with jib rest stress distribution, thus effectively ensuring the stress of the main jib structure to be more uniform and improving the integral strength; and the bearing capability is strong, the structure is concise and the weight is light.
Description
Technical field
The present invention relates to a kind of main arm structure of construction machinery and equipment, particularly a kind of fork installation main arm structure.
Background technology
The fork installation is a kind of high-mobility, multipurpose, wheeled vehicle lifting haulage equipment, integrates stability and high efficiency, is suitable for various materials carrying environment.The fork installation has its unique construction, and front end is equipment, and equipment comprises the compositions such as principal arm, telescopic jib (being included in principal arm) and unsteady pallet fork.In lifting high operation, mainly bear by principal arm the gravity that whole telescopic jib, pallet fork and load produce.Present stage fork installation main arm structure generally adopts four blocks of sheet materials to be welded into the tetragonal version that the cross section is standard, because of project organization unreasonable, butt weld is many, welding stress is difficult for discharging, make the stressed homogeneity of swing arm in lifting process bad, cause the harmful effects such as short, cracking of principal arm pot life.
Summary of the invention
The objective of the invention is to provide a kind of rational in infrastructure, high-intensity fork installation main arm structure.
The object of the present invention is achieved like this: this principal arm comprises: U-shaped main semaphore arm, front epiplastron, upper cover plate, epiplastron, main brass, bending cover plate, reverse link, the first axle sleeve, the second axle sleeve, left web, right web, oil cylinder stay bearing plate, the 3rd axle sleeve, front side plate, front lower web plate, rear interior bent plate, rear web, rear endosternum and the 4th axle sleeve, U-shaped main semaphore arm is main body, and the inboard that upper cover plate is welded on U-shaped main semaphore arm forms a high intensity case body structure; Front epiplastron and epiplastron are welded on respectively front portion and the medium position of upper cover plate; The second axle sleeve is welded on respectively the both sides, back of the wallboard of U-shaped main semaphore arm; The bending bridge welding is connected on wallboard back one side of U-shaped main semaphore arm; Main brass is welded between two wallboards of U-shaped main semaphore arm and passes the bending cover plate; The first axle sleeve is welded on above the bending cover plate; Reverse link 7 is welded on main brass back above the wallboard of U-shaped main semaphore arm; In rear, bent plate is welded between the wallboard and bending cover plate of U-shaped main semaphore arm; Rear web, rear endosternum and the 4th axle sleeve are welded on respectively wallboard back one side of U-shaped main semaphore arm; Left web and right web are welded on respectively both sides, U-shaped main semaphore arm centre; The oil cylinder stay bearing plate is symmetrically welded on left web and right web; The 3rd axle sleeve is welded on left web and right web; Front side plate is symmetrically welded at the front end both sides of U-shaped main semaphore arm; Front lower web plate is welded on the centre of U-shaped main semaphore arm front end lower front side plate.
Beneficial effect, owing to having adopted such scheme, the combination by U-shaped main wallboard and upper cover plate has greatly reduced weld seam, becomes two weld seams by four weld seams, has reduced welding stress and welding deformation.Arm head is strengthened by four groups of high strength webs, side plate and gussets up and down at the arm head of principal arm, guaranteed arm head intensity.Force localization is at the principal arm midway location when whole swing arm is stretched entirely, and whole epiplastron has well been protected the torsional deflection of U-shaped main wallboard under the weight effect, and the left and right sides web has been strengthened the intensity of whole swing arm box type construction.Simultaneously the profiled holes in the middle of the web of left and right and backward gradually the design of the contour structures of transition make again the welding stress that produces in the movable arm welding process obtain good release, when having guaranteed principal arm work reliably, safety.Thereby the design of one-sided cover plate has reduced again the width of principal arm when guaranteeing the normal supply oil mass of leveling cyclinder reduce the principal arm volume, and weight is lighter.It is strong, simple for structure, lightweight that whole principal arm has a load-carrying capacity, reaches the stability and the lifting performance that improve complete machine, simplified simultaneously welding process, improved work efficiency.
Advantage: adopt the combination of U-shaped main wallboard and upper cover plate, greatly reduced weld seam; Each web adopts curved profile in conjunction with the jib distribution of force, actv. make main arm structure stressed more all should, improved bulk strength; The principal arm rear end adopts great circle arc to carry out transition, has reduced stress and has concentrated.The oil cylinder stay bearing plate is welded on U-shaped plate midway location and makes stressed more even in lifting process of swing arm, improves the principal arm pot life.Whole main arm structure has reduced welding stress and welding process difficulty, alleviates working strength, and load-carrying capacity is strong, simple for structure, lightweight.
Description of drawings
Fig. 1 is constructional drawing of the present invention.
Fig. 2 is cover plate sectional structure chart of the present invention.
In figure, 1, U-shaped main semaphore arm; 2, front epiplastron; 3, upper cover plate; 4, epiplastron; 5, main brass; 6, bending cover plate; 7, reverse link; 8, the first axle sleeve; 9, the second axle sleeve; 10, left web; 11, right web; 12, oil cylinder stay bearing plate; 13, the 3rd axle sleeve; 14, front side plate; 15, front lower web plate; 16, rear interior bent plate; 17, rear web; 18, rear endosternum; 19, the 4th axle sleeve.
The specific embodiment
Embodiment 1: this principal arm comprises: U-shaped main semaphore arm 1, front epiplastron 2, upper cover plate 3, epiplastron 4, main brass 5, bending cover plate 6, reverse link 7, the first axle sleeve 8, the second axle sleeve 9, left web 10, right web 11, oil cylinder stay bearing plate 12, the 3rd axle sleeve 13, front side plate 14, front lower web plate 15, rear interior bent plate 16, rear web 17, rear endosternum 18 and the 4th axle sleeve 19.U-shaped main semaphore arm 1 is main body, and the inboard that upper cover plate 3 is welded on U-shaped main semaphore arm 1 forms a high intensity case body structure; Front epiplastron 2 and epiplastron 4 are welded on respectively front portion and the medium position of upper cover plate 3; The second axle sleeve 9 is welded on respectively the both sides, back of the wallboard of U-shaped main semaphore arm 1; Bending cover plate 6 is welded on wallboard back one side of U-shaped main semaphore arm 1; Main brass 5 is welded between two wallboards of U-shaped main semaphore arm 1 and passes bending cover plate 6; The first axle sleeve 8 is welded on above bending cover plate 6; Reverse link 7 is welded on above the wallboard of U-shaped main semaphore arm 1 part main brass back No. 5; In rear, bent plate 16 is welded between the wallboard and bending cover plate 6 of U-shaped main semaphore arm 1; Rear web 17, rear endosternum 18 and the 4th axle sleeve 19 are welded on respectively wallboard back one side of U-shaped main semaphore arm 1; Left web 10 and right web 11 are welded on respectively both sides in the middle of U-shaped main semaphore arm 1; Oil cylinder stay bearing plate 12 is symmetrically welded on left web 10 and right web 11; The 3rd axle sleeve 13 is welded on left web 10 and right web 11; Front side plate 14 is symmetrically welded at the front end both sides of U-shaped main semaphore arm 1; Front lower web plate 15 is welded on the centre of U-shaped main semaphore arm 1 front end lower front side plate 14.
Claims (1)
1. pitch the installation main arm structure for one kind, it is characterized in that: this principal arm comprises: U-shaped main semaphore arm, front epiplastron, upper cover plate, epiplastron, main brass, bending cover plate, reverse link, the first axle sleeve, the second axle sleeve, left web, right web, oil cylinder stay bearing plate, the 3rd axle sleeve, front side plate, front lower web plate, rear interior bent plate, rear web, rear endosternum and the 4th axle sleeve, U-shaped main semaphore arm is main body, and the inboard that upper cover plate is welded on U-shaped main semaphore arm forms a high intensity case body structure; Front epiplastron and epiplastron are welded on respectively front portion and the medium position of upper cover plate; The second axle sleeve is welded on respectively the both sides, back of the wallboard of U-shaped main semaphore arm; The bending bridge welding is connected on wallboard back one side of U-shaped main semaphore arm; Main brass is welded between two wallboards of U-shaped main semaphore arm and passes the bending cover plate; The first axle sleeve is welded on above the bending cover plate; Reverse link (7) is welded on main brass back above the wallboard of U-shaped main semaphore arm; In rear, bent plate is welded between the wallboard and bending cover plate of U-shaped main semaphore arm; Rear web, rear endosternum and the 4th axle sleeve are welded on respectively wallboard back one side of U-shaped main semaphore arm; Left web and right web are welded on respectively both sides, U-shaped main semaphore arm centre; The oil cylinder stay bearing plate is symmetrically welded on left web and right web; The 3rd axle sleeve is welded on left web and right web; Front side plate is symmetrically welded at the front end both sides of U-shaped main semaphore arm; Front lower web plate is welded on the centre of U-shaped main semaphore arm front end lower front side plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110198843 CN102249170B (en) | 2011-07-15 | 2011-07-15 | Main jib structure for fork installing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110198843 CN102249170B (en) | 2011-07-15 | 2011-07-15 | Main jib structure for fork installing machine |
Publications (2)
| Publication Number | Publication Date |
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| CN102249170A CN102249170A (en) | 2011-11-23 |
| CN102249170B true CN102249170B (en) | 2013-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110198843 Active CN102249170B (en) | 2011-07-15 | 2011-07-15 | Main jib structure for fork installing machine |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587669B (en) * | 2012-03-21 | 2015-02-18 | 中联重科股份有限公司 | Cantilever crane and pump truck |
| CN102900106A (en) * | 2012-09-29 | 2013-01-30 | 江苏柳工机械有限公司 | Swing arm of skid steering loader |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10030190A1 (en) * | 1999-06-22 | 2001-05-31 | Atecs Mannesmann Ag | Telescopic boom for vehicle cranes has telescopic arms with profiled shell made from profiled sheet metal with varying nominal wall thickness adapted to load but with constant internal hollow dimensions |
| GB2403172A (en) * | 2003-06-17 | 2004-12-29 | Bamford Excavators Ltd | Method of forming a metal box section |
| CN102030274A (en) * | 2010-05-24 | 2011-04-27 | 韶关市起重机厂有限责任公司 | Jib arm structure of lorry-mounted crane |
| CN202181194U (en) * | 2011-07-15 | 2012-04-04 | 徐州徐工特种工程机械有限公司 | Main arm structure of fork device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101287672A (en) * | 2005-10-12 | 2008-10-15 | 帕尔芬杰尔股份有限公司 | Crane with reinforcing plate |
| JP5059645B2 (en) * | 2008-02-06 | 2012-10-24 | 株式会社アイチコーポレーション | Jacking device |
| DE102008013203A1 (en) * | 2008-03-08 | 2009-09-17 | Terex-Demag Gmbh | Boom for end-loading of loads, boom assembly with at least two such cantilevers and method of making such a boom |
-
2011
- 2011-07-15 CN CN 201110198843 patent/CN102249170B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10030190A1 (en) * | 1999-06-22 | 2001-05-31 | Atecs Mannesmann Ag | Telescopic boom for vehicle cranes has telescopic arms with profiled shell made from profiled sheet metal with varying nominal wall thickness adapted to load but with constant internal hollow dimensions |
| GB2403172A (en) * | 2003-06-17 | 2004-12-29 | Bamford Excavators Ltd | Method of forming a metal box section |
| CN102030274A (en) * | 2010-05-24 | 2011-04-27 | 韶关市起重机厂有限责任公司 | Jib arm structure of lorry-mounted crane |
| CN202181194U (en) * | 2011-07-15 | 2012-04-04 | 徐州徐工特种工程机械有限公司 | Main arm structure of fork device |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2009-184514A 2009.08.20 |
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| CN102249170A (en) | 2011-11-23 |
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