CN102249170A - Main jib structure for fork installing machine - Google Patents
Main jib structure for fork installing machine Download PDFInfo
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- CN102249170A CN102249170A CN2011101988433A CN201110198843A CN102249170A CN 102249170 A CN102249170 A CN 102249170A CN 2011101988433 A CN2011101988433 A CN 2011101988433A CN 201110198843 A CN201110198843 A CN 201110198843A CN 102249170 A CN102249170 A CN 102249170A
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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 principal arm structure of construction machinery and equipment, particularly a kind of fork installation principal 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 an equipment, and equipment comprises compositions such as principal arm, telescopic jib (being included in the principal arm) and unsteady pallet fork.In lifting high operation, mainly bear the gravity that whole telescopic jib, pallet fork and load produce by principal arm.Present stage fork installation principal arm structure generally adopts four blocks of sheet materials to be welded into the tetragonal version that the cross section is a standard, because of project organization unreasonable, butt weld is many, welding stress is difficult for discharging, make the stressed homogeneity of swing arm in the lifting process bad, cause harmful effects such as principal arm pot life weak point, cracking.
Summary of the invention
The objective of the invention is to provide a kind of fork installation principal arm structure rational in infrastructure, high-intensity.
The object of the present invention is achieved like this: this principal arm comprises: bent plate, rear web, back endosternum and the 4th axle sleeve in U type main semaphore arm, preceding epiplastron, upper cover plate, epiplastron, main brass, bending cover plate, reverse link, first axle sleeve, second axle sleeve, left web, right web, oil cylinder stay bearing plate, third axle cover, front side plate, preceding lower web plate, the back, U type main semaphore arm is a main body, and the inboard that upper cover plate is welded on U type main semaphore arm forms a high strength body structure; Preceding epiplastron and epiplastron are welded on the front portion and the medium position of upper cover plate respectively; Second axle sleeve is welded on the both sides, back of the wallboard of U type main semaphore arm respectively; The bending bridge welding is connected on wallboard back one side of U type main semaphore arm; Main brass is welded between two wallboards of U type main semaphore arm and passes the bending cover plate; 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 type main semaphore arm; Bent plate is welded between the wallboard and bending cover plate of U type main semaphore arm in the back; Rear web, back endosternum and the 4th axle sleeve are welded on wallboard back one side of U type main semaphore arm respectively; Left web and right web are welded on the middle both sides of U type main semaphore arm respectively; The oil cylinder stay bearing plate is symmetrically welded on left web and the right web; The third axle cover is welded on left web and the right web; Front side plate is symmetrically welded at the front end both sides of U type main semaphore arm; Preceding lower web plate is welded on the centre of U type main semaphore arm front end lower front side plate.
Beneficial effect, owing to adopted such scheme, the combination by U type master's wallboard and upper cover plate has significantly 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 type master 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 the left and right sides and backward gradually the design of the contour structures of transition make the welding stress that produces in the swing arm welding process obtain good release again, when having guaranteed principal arm work reliably, safety.Thereby the design of one-sided cover plate has reduced the width of principal arm again 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, in light weight that whole principal arm has a load-carrying capacity, reaches the stability and the lifting performance that improve complete machine, simplified welding process simultaneously, improved work efficiency.
Advantage: adopt the combination of U type master's wallboard and upper cover plate, significantly reduced weld seam; Each web adopts curved profile in conjunction with the stressed distribution of jib, actv. make the principal arm structure stress more all should, improved bulk strength; The principal arm rear end adopts great circle arc to carry out transition, has reduced stress concentration.The oil cylinder stay bearing plate is welded on U template midway location and makes swing arm stressed more even in the lifting process, improves the principal arm pot life.Whole principal arm structure has reduced welding stress and welding process difficulty, alleviates working strength, and load-carrying capacity is strong, simple for structure, in light weight.
Description of drawings
Fig. 1 is a constructional drawing of the present invention.
Fig. 2 is a cover plate sectional structure chart of the present invention.
Among the figure, 1, U type main semaphore arm; 2, preceding epiplastron; 3, upper cover plate; 4, epiplastron; 5, main brass; 6, bending cover plate; 7, reverse link; 8, first axle sleeve; 9, second axle sleeve; 10, left web; 11, right web; 12, oil cylinder stay bearing plate; 13, third axle cover; 14, front side plate; 15, preceding lower web plate; 16, bent plate in the back; 17, rear web; 18, back endosternum; 19, the 4th axle sleeve.
The specific embodiment
Embodiment 1: this principal arm comprises: bent plate 16, rear web 17, back endosternum 18 and the 4th axle sleeve 19 in U type main semaphore arm 1, preceding epiplastron 2, upper cover plate 3, epiplastron 4, main brass 5, bending cover plate 6, reverse link 7, first axle sleeve 8, second axle sleeve 9, left web 10, right web 11, oil cylinder stay bearing plate 12, third axle cover 13, front side plate 14, preceding lower web plate 15, the back.U type main semaphore arm 1 is a main body, and the inboard that upper cover plate 3 is welded on U type main semaphore arm 1 forms a high strength body structure; Preceding epiplastron 2 and epiplastron 4 are welded on the front portion and the medium position of upper cover plate 3 respectively; Second axle sleeve 9 is welded on the both sides, back of the wallboard of U type main semaphore arm 1 respectively; Bending cover plate 6 is welded on wallboard back one side of U type main semaphore arm 1; Main brass 5 is welded between two wallboards of U type main semaphore arm 1 and passes bending cover plate 6; First axle sleeve 8 is welded on above the bending cover plate 6; Reverse link 7 is welded on No. 5 part main brass back above the wallboard of U type main semaphore arm 1; Bent plate 16 is welded between the wallboard and bending cover plate 6 of U type main semaphore arm 1 in the back; Rear web 17, back endosternum 18 and the 4th axle sleeve 19 are welded on wallboard back one side of U type main semaphore arm 1 respectively; Left web 10 and right web 11 are welded on U type main semaphore arm 1 middle both sides respectively; Oil cylinder stay bearing plate 12 is symmetrically welded on left web 10 and the right web 11; Third axle cover 13 is welded on left web 10 and the right web 11; Front side plate 14 is symmetrically welded at the front end both sides of U type main semaphore arm 1; Preceding lower web plate 15 is welded on the centre of U type main semaphore arm 1 front end lower front side plate 14.
Claims (1)
1. pitch installation principal arm structure for one kind, it is characterized in that: this principal arm comprises: this principal arm comprises: bent plate, rear web, back endosternum and the 4th axle sleeve in U type main semaphore arm, preceding epiplastron, upper cover plate, epiplastron, main brass, bending cover plate, reverse link, first axle sleeve, second axle sleeve, left web, right web, oil cylinder stay bearing plate, third axle cover, front side plate, preceding lower web plate, the back, U type main semaphore arm is a main body, and the inboard that upper cover plate is welded on U type main semaphore arm forms a high strength body structure; Preceding epiplastron and epiplastron are welded on the front portion and the medium position of upper cover plate respectively; Second axle sleeve is welded on the both sides, back of the wallboard of U type main semaphore arm respectively; The bending bridge welding is connected on wallboard back one side of U type main semaphore arm; Main brass is welded between two wallboards of U type main semaphore arm and passes the bending cover plate; 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 type main semaphore arm; Bent plate is welded between the wallboard and bending cover plate of U type main semaphore arm in the back; Rear web, back endosternum and the 4th axle sleeve are welded on wallboard back one side of U type main semaphore arm respectively; Left web and right web are welded on the middle both sides of U type main semaphore arm respectively; The oil cylinder stay bearing plate is symmetrically welded on left web and the right web; The third axle cover is welded on left web and the right web; Front side plate is symmetrically welded at the front end both sides of U type main semaphore arm; Preceding lower web plate is welded on the centre of U type 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 |
|---|---|
| CN102249170A true CN102249170A (en) | 2011-11-23 |
| CN102249170B 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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| Country | Link |
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| CN (1) | CN102249170B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587669A (en) * | 2012-03-21 | 2012-07-18 | 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 (7)
| 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 |
| WO2007041739A1 (en) * | 2005-10-12 | 2007-04-19 | Palfinger Ag | Crane with reinforcing plate |
| JP2009184514A (en) * | 2008-02-06 | 2009-08-20 | Aichi Corp | Jack device |
| US20110068076A1 (en) * | 2008-03-08 | 2011-03-24 | Terex Demag Gmbh A German Corporation | Boom for Receiving Loads on the End Thereof, Boom Assembly with at Least Two Such Booms and Method of Manufacturing Such a Boom |
| 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 |
-
2011
- 2011-07-15 CN CN 201110198843 patent/CN102249170B/en active Active
Patent Citations (7)
| 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 |
| WO2007041739A1 (en) * | 2005-10-12 | 2007-04-19 | Palfinger Ag | Crane with reinforcing plate |
| JP2009184514A (en) * | 2008-02-06 | 2009-08-20 | Aichi Corp | Jack device |
| US20110068076A1 (en) * | 2008-03-08 | 2011-03-24 | Terex Demag Gmbh A German Corporation | Boom for Receiving Loads on the End Thereof, Boom Assembly with at Least Two Such Booms and Method of Manufacturing Such a Boom |
| 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587669A (en) * | 2012-03-21 | 2012-07-18 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102249170B (en) | 2013-06-12 |
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