CN110733979A - Upper side light load single welding seam crane boom - Google Patents
Upper side light load single welding seam crane boom Download PDFInfo
- Publication number
- CN110733979A CN110733979A CN201911134287.6A CN201911134287A CN110733979A CN 110733979 A CN110733979 A CN 110733979A CN 201911134287 A CN201911134287 A CN 201911134287A CN 110733979 A CN110733979 A CN 110733979A
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- Prior art keywords
- boom
- sides
- arm
- positions
- upper side
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The invention relates to upper side light load single weld seam crane booms, which comprise an inner boom (1) and an outer boom (2), wherein the inner boom (1) is sleeved in the outer boom (2) along the extension direction of a hollow cavity of the outer boom (2), the inner boom (1) and the outer boom (2) are hollow cylindrical bodies with butt joint edges formed by folding steel plates and positioned in the middle of the upper side, and the inner boom (1) and the outer boom (2) are respectively welded into a whole at the butt joint edge position in the middle of the upper side.
Description
Technical Field
The invention relates to a hoisting device, in particular to an crane arm.
Background
The crane boom is a key part of the crane, in order to improve the lifting capacity, a crane manufacturer needs to adopt various methods to reduce the weight of the crane boom, but the strength of the crane boom cannot be reduced on the premise of reducing the weight of the crane boom, so practical and reasonable improvement needs to be carried out on the crane boom structure. Most of crane booms of the existing cranes are processed by adopting a corner welding mode, the welding seams of the crane booms are mostly arranged at the corner positions of the crane booms, the stress of the welding seams is large, the tensile strength and the compressive strength are both smaller than those of other non-welding positions of the crane booms, and the strength of the crane booms is seriously influenced. Therefore, the crane arm with multiple welding seams is easy to open and weld in the using process to cause accidents, and is not safe and reliable enough to use.
Disclosure of Invention
The invention aims to provide crane arms with high strength, light weight, difficult welding and safe and reliable use and with light load on the upper side and single welding seam.
The technical solution of the invention is as follows: the inner arm is sleeved in the outer arm along the extending direction of the cavity of the outer arm, two upper corner positions of the rear end part of the inner arm are respectively provided with an upper sliding wear-resistant block in sliding fit with two inner corner positions of the upper side of the outer arm, a lower sliding wear-resistant block in sliding fit with the outer wall of the lower side of the inner arm is arranged on the inner wall of the lower side of the front end part of the outer arm, the inner arm and the outer arm are respectively hollow cylindrical bodies with butt joint edges folded by steel plates located at the middle positions of the upper side, and the inner arm and the outer arm are respectively welded into a whole at the butt joint edge positions in the middle of the upper side.
The invention has the technical effects that the strength is high, the weight is light, the welding is not easy to open, the use reliability is high, only welding seams are arranged at the middle position of the upper side surface of the crane boom, so that the crane boom forms an integral structure welded at the middle position of the upper side surface, the bearing capacity on the welding seams is greatly reduced, the problem of opening welding caused by bearing of the welding seams is avoided, and the safety and the reliability of the crane boom are directly improved.
Drawings
FIG. 1 is a schematic cross-sectional view of an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a third embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of an embodiment of the present invention;
fig. 5 is a schematic cross-sectional structure diagram of an embodiment of the invention.
Detailed Description
Embodiment , as shown in fig. 1, it includes inner arm 1 and outer arm 2, inner arm 1 along the outer arm 2 cavity along the extension direction suit in the outer arm 2, two upper corner positions of inner arm 1 rear end are equipped with respectively with two interior corner positions of outer arm 2 upside looks sliding fit's last wear-resisting piece 3, be equipped with on the downside inner wall of outer arm 2 front end with the downside outer wall looks sliding fit's of inner arm 1 lower sliding wear-resisting piece 4, inner arm 1 and outer arm 2 are respectively by the hollow cylinder body that the butt joint limit that the steel sheet was folded was located the upper surface intermediate position, inner arm 1 and outer arm 2 are respectively in the middle of the upper surface butt joint limit position welding of butt joint limit and become whole.
The butt joint edges of the inner arm 1 and the outer arm 2 are respectively arranged in the middle of the upper side surfaces of the inner arm 1 and the outer arm 2, so that the strength of the left side and the right side of the inner arm 1 and the outer arm 2 is ensured, the edge area with concentrated bearing capacity is avoided, and the tensile force, the pressure and the impact force to a welding seam are reduced.
The butt joint edge positions of the inner arm 1 and the outer arm 2 are respectively provided with welding grooves, and the transverse sections of the parts of the welding seams, which protrude out of the upper surfaces of the inner arm 1 and the outer arm 2, are small semi-circles so as to ensure that the welding seams have enough welding strength.
The middle position of the lower side surfaces of the inner arm 1 and the outer arm 2 is a plane 5 extending along the cavity direction of the inner arm 1, the positions of the two sides of the plane 5 are respectively folded upwards to form a slope 6 which is connected with the plane 5 and has a low side and a high side, the edges of the two slopes 6 far away from the plane 5 are folded upwards to form a left vertical surface 7 and a right vertical surface 7 which are perpendicular to the plane 5 and are parallel to each other, the opposite positions of the upper sides of the two vertical surfaces 7 are oppositely bent into 90-degree circular arcs and are oppositely welded, the surfaces of the upper sliding wear-resistant blocks 3 which are matched with the two inner angles of the upper side of the outer arm 2 are 90-degree circular arc surfaces, and lower sliding wear-resistant blocks 4 are respectively arranged on the sides of the inner walls.
In the second embodiment, as shown in fig. 2, the difference from the second embodiment is that the lower side surfaces of the inner arm 1 and the outer arm 2 are 180-degree arc surfaces 8 axially extending along the cavity of the inner arm 1, the side portions of both sides of the 180-degree arc surfaces 8 extend upward in parallel to form two left and right vertical surfaces 7, the upper sides of the two vertical surfaces 7 are oppositely bent in a 90-degree arc shape, the side portions are oppositely welded, the surfaces of the upper sliding wear-resistant blocks 3 matching with the two inner corners of the upper side of the outer arm 2 are 90-degree arc surfaces, lower sliding wear-resistant blocks 4 are respectively arranged at the high points of both sides of the 180-degree arc surface 8 at the front end of the outer arm 2, or lower sliding wear-resistant blocks 4 of an integral structure are arranged on the 180-degree arc surface 8 at the front end.
In the third embodiment, as shown in fig. 3, the difference from the third embodiment is that the lower surfaces of the inner arm 1 and the outer arm 2 are 180-degree arc surfaces 8 axially extending along the cavity of the inner arm 1, the edges on both sides of the 180-degree arc surfaces 8 extend upward in parallel to form two vertical surfaces 7 of the inner arm 1, the opposite positions of the upper sides of the two vertical surfaces 7 are bent at right angles, the edges are welded to each other, the surfaces of the upper sliding wear-resistant blocks 3 matching with the two inner angles on the upper side of the outer arm 2 are right-angled surfaces, lower sliding wear-resistant blocks 4 are respectively arranged at the high points on both sides of the 180-degree arc surface 8 at the front end of the outer arm 2, or lower sliding wear-resistant blocks 4 of an integral structure are arranged on the 180-degree arc surface 8 at the front end of.
In the fourth embodiment, as shown in fig. 4, the difference from the first embodiment is that the middle position of the lower side surfaces of the inner arm 1 and the outer arm 2 is folded downward, the two sides form the slope surfaces 6 with a low folded position and a high opposite position, the high edge portions of the two slope surfaces 6 are respectively extended upward in parallel to form two vertical surfaces 7, the upper sides of the two vertical surfaces 7 are oppositely bent in a 90-degree circular arc shape, the edge portions are oppositely welded, the surfaces of the upper sliding wear-resistant blocks 3, which are matched with the two inner angles on the upper side of the outer arm 2, are 90-degree circular arc surfaces, and lower sliding wear-resistant blocks 4 are respectively arranged at the high positions of the two slope surfaces 6 on the inner wall of the front.
In the fifth embodiment, as shown in fig. 5, the difference from the first embodiment is that the middle position of the lower side surfaces of the inner arm 1 and the outer arm 2 is folded downward, the two sides form the slope surfaces 6 with a low folded position and a high position on the opposite side, the high side portions of the two slope surfaces 6 are respectively extended upward in parallel to form the left vertical surface 7 and the right vertical surface 7, the opposite positions of the upper sides of the two vertical surfaces 7 are bent in opposite right angles, the side portions are connected by welding, the surfaces of the upper sliding wear-resistant blocks 3 matching with the two inner angles on the upper side of the outer arm 2 are right-angled surfaces, and lower sliding wear-resistant blocks are respectively arranged at the high positions of the two slope surfaces.
Claims (8)
1. Upside light load list welding seam jib loading boom, it includes inner boom (1) and outer boom (2), inner boom (1) is along the direction suit of stretching in outer boom (2) cavity in outer boom (2), two upper corner positions of inner boom (1) rear end portion are equipped with respectively with two interior angle position looks sliding fit's of outer boom (2) upside wear-resisting piece (3) that slide, be equipped with on the downside inner wall of outer boom (2) front end portion with the downside outer wall looks sliding fit's of inner boom (1) wear-resisting piece (4) that slide down, its characterized in that: the inner arm (1) and the outer arm (2) are hollow cylindrical bodies with butt joint edges formed by folding steel plates and located in the middle of the upper side surface, and the inner arm (1) and the outer arm (2) are welded into a whole in the butt joint edge position in the middle of the upper side surface.
2. The upper side light load single weld crane boom according to claim 1, characterized in that the butt edges of the inner boom (1) and the outer boom (2) are arranged in the middle of the upper sides of the inner boom (1) and the outer boom (2), respectively.
3. The upper side light load single weld crane boom according to claim 1, characterized in that the butt joint edge positions of the inner boom (1) and the outer boom (2) are respectively provided with a welding groove, and the transverse section of the part of the welding seam protruding out of the upper surfaces of the inner boom (1) and the outer boom (2) is a small semicircle.
4. The upper-side light-load single-weld crane boom according to claim 1, characterized in that the middle positions of the lower sides of the inner arm (1) and the outer arm (2) are planes (5) extending along the cavity direction of the inner arm (1), the positions of both sides of the planes (5) are respectively folded upwards to form a slope (6) which is connected with the planes (5) and has a low side and a high side , the edges of both slopes (6) far away from the planes (5) are folded upwards to form a left vertical surface (7) and a right vertical surface (7) which are perpendicular to the planes (5) and are parallel to each other, the opposite positions of the upper sides of both vertical surfaces (7) are oppositely bent to form a 90-degree circular arc, the edges are relatively welded, the surfaces of both upper sliding wear-resistant blocks (3) and both inner corners of the upper side of the outer arm (2) are 90-degree circular arcs, and the sides of both slopes (6) far away from the planes (5) on the inner walls of the front end.
5. The upper side light load single weld seam jib crane boom according to claim 1, characterized in that the lower side surfaces of the inner arm (1) and the outer arm (2) are 180 degree arc surfaces (8) axially extending along the extension direction of the cavity of the inner arm (1), the side parts at both sides of the 180 degree arc surfaces (8) are parallel and extended upwards to form a left vertical surface and a right vertical surface (7), the upper sides of the two vertical surfaces (7) are oppositely bent in 90 degree arc shape, the side parts are oppositely welded, the surfaces of the upper sliding wear-resistant blocks (3) matched with the two inner angles at the upper side of the outer arm (2) are 90 degree arc surfaces, the high points at both sides of the 180 degree arc surface (8) at the front end of the outer arm (2) are respectively provided with lower sliding wear-resistant blocks (4), or lower sliding wear-resistant blocks (4) with an integral structure are arranged on the 180 degree arc surface (8) at the front end of the outer.
6. The upper side light load single-weld crane boom according to claim 1, characterized in that the lower side surfaces of the inner arm (1) and the outer arm (2) are 180-degree arc surfaces (8) axially extending along the cavity of the inner arm (1), the edges of both sides of the 180-degree arc surfaces (8) extend upwards in parallel to form two left and right vertical surfaces (7) of the inner arm (1), the opposite positions of the upper sides of the two vertical surfaces (7) are bent towards a right angle, the edges are welded to each other, the surfaces of the upper sliding wear-resistant blocks (3) matched with the two inner angles of the upper side of the outer arm (2) are right-angle surfaces, lower sliding wear-resistant blocks (4) are respectively arranged at the high points of both sides of the 180-degree arc surface (8) at the front end of the outer arm (2), or lower sliding wear-resistant blocks (4) of an integral structure are arranged on the 180-degree arc surface (8) at the front end of.
7. The upper-side light-load single-weld crane boom as claimed in claim 1, wherein the middle positions of the lower side surfaces of the inner boom (1) and the outer boom (2) are folded downwards, two sides form slopes (6) with low folded positions and high opposite side positions, the high sides of the two slopes (6) are respectively extended upwards in parallel to form a left vertical surface and a right vertical surface (7), the opposite positions of the upper sides of the two vertical surfaces (7) are bent in 90-degree circular arc shape, the sides are welded and connected oppositely, the surfaces of the upper sliding wear-resistant blocks (3) and the two inner corners of the upper side of the outer boom (2) are 90-degree circular arc surfaces, and lower sliding wear-resistant blocks (4) are respectively arranged at the high positions of the two slopes (6) on the inner wall of the front end of the outer boom (.
8. The upper-side light-load single-weld crane boom as claimed in claim 1, wherein the middle positions of the lower sides of the inner boom (1) and the outer boom (2) are folded downwards, two sides of the lower sides form slopes (6) with low folded positions and high opposite side positions, the high sides of the two slopes (6) are respectively extended upwards in parallel to form a left vertical surface and a right vertical surface (7), the opposite positions of the upper sides of the two vertical surfaces (7) are bent towards a right angle, the sides are welded and connected oppositely, the surfaces of the upper sliding wear-resistant blocks (3) matched with the two inner angles of the upper side of the outer boom (2) are right-angled surfaces, and lower sliding wear-resistant blocks (4) are respectively arranged at the high positions of the two slopes (6) on the inner wall of the front end of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911134287.6A CN110733979A (en) | 2019-11-19 | 2019-11-19 | Upper side light load single welding seam crane boom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911134287.6A CN110733979A (en) | 2019-11-19 | 2019-11-19 | Upper side light load single welding seam crane boom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110733979A true CN110733979A (en) | 2020-01-31 |
Family
ID=69273222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911134287.6A Withdrawn CN110733979A (en) | 2019-11-19 | 2019-11-19 | Upper side light load single welding seam crane boom |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110733979A (en) |
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| CN2755060Y (en) * | 2004-11-25 | 2006-02-01 | 长沙中联重工科技发展股份有限公司浦沅分公司 | Sweep with polygon casing section |
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| DE202016003525U1 (en) * | 2016-06-03 | 2016-06-23 | Liebherr-Werk Ehingen Gmbh | Telescopic profile with variable impact |
| CN108179881A (en) * | 2017-12-26 | 2018-06-19 | 湖南鹏翔星通汽车有限公司 | Pentagon arm support, spraying wet machine and polygon arm support production method |
| CN208791061U (en) * | 2018-09-14 | 2019-04-26 | 泰安东岳重工有限公司 | A kind of suspension arm of lorry-mounted crane cylinder |
| CN211078213U (en) * | 2019-11-19 | 2020-07-24 | 姚运文 | Upper side light load single welding seam crane boom |
-
2019
- 2019-11-19 CN CN201911134287.6A patent/CN110733979A/en not_active Withdrawn
Patent Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4459786A (en) * | 1981-10-27 | 1984-07-17 | Ro Corporation | Longitudinally bowed transversely polygonal boom for cranes and the like |
| US5884791A (en) * | 1996-06-18 | 1999-03-23 | Kidde Industries, Inc. | Telescopic jib for vehicular cranes |
| CN2755060Y (en) * | 2004-11-25 | 2006-02-01 | 长沙中联重工科技发展股份有限公司浦沅分公司 | Sweep with polygon casing section |
| CN201301181Y (en) * | 2008-12-01 | 2009-09-02 | 三一汽车制造有限公司 | Retractable jib |
| JP2011042430A (en) * | 2009-08-19 | 2011-03-03 | Kobelco Cranes Co Ltd | Boom of crane and method of manufacturing boom of crane |
| 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 |
| CN201914869U (en) * | 2010-12-31 | 2011-08-03 | 徐州重型机械有限公司 | Crane and telescopic arm thereof |
| US20120199543A1 (en) * | 2011-02-09 | 2012-08-09 | Oshkosh Corporation | Boom for a crane assembly |
| JP2012206848A (en) * | 2011-03-30 | 2012-10-25 | Tadano Ltd | Boom and method of welding the same |
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| CN205114905U (en) * | 2015-10-13 | 2016-03-30 | 姚运文 | Light -duty jib loading boom of high strength middle part welding |
| CN105584943A (en) * | 2016-01-15 | 2016-05-18 | 三一帕尔菲格特种车辆装备有限公司 | Crane boom and crane |
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Application publication date: 20200131 |
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