CN103818836A - Crane jib section with adjustable upwards tilted angle, crane jib and crane - Google Patents
Crane jib section with adjustable upwards tilted angle, crane jib and crane Download PDFInfo
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- CN103818836A CN103818836A CN201410068935.3A CN201410068935A CN103818836A CN 103818836 A CN103818836 A CN 103818836A CN 201410068935 A CN201410068935 A CN 201410068935A CN 103818836 A CN103818836 A CN 103818836A
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- rod
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- arm
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Abstract
The invention discloses a crane jib section with an adjustable upwards tilted angle, which comprises a lower chord rod, a first upper chord rod and a second upper chord rod arranged with the lower chord rod at interval, a web member connected between the lower chord rod and the first upper chord rod as well as the second upper chord rod, and a hanging point plate assembly connected between the first upper chord rod and the second upper chord rod, wherein the hanging point plate assembly comprises a hanging point plate, a pin and an adjusting mechanism, a bar-shaped aperture is arranged on the hanging point plate, the pin is passed through the bar-shaped aperture and is used for hinging to a pull bar assembly, the adjusting mechanism is used for adjusting the position of the pin along the bar-shaped aperture, so that the included angle of the crane jib section and the pull bar assembly can be adjusted. According to the invention, the upwards tilted angle of the crane jib section can be adjusted through the adjusting mechanism, the workload is reduced, and the efficiency is increased.
Description
Technical field
The present invention relates to engineering machinery field, particularly relate to a kind of crane arm arm joint of adjustable upper set-back and use crane arm and the hoisting crane of above-mentioned crane arm arm joint.
Background technology
Refer to Fig. 1, Fig. 1 is the constructional drawing of the crane arm arm joint of prior art.As shown in Figure 1, the crane arm arm joint 10 of prior art is welded by the first top boom 11, the second top boom 12, suspension centre plate 13, web member 14 and lower boom 15, and pull bar 16 is connected with crane arm arm joint 10 with suspension centre plate 13 by arm-tie frame 17.Spend large or crane arm arm when upwarping of crane arm arm joint 10 and save 10 when sagging, by the length of adjusting yoke 16, the upper set-back of crane arm arm joint 10 is proofreaied and correct, need to utilize wheel crane or other tower cranes dismounting crane arm arm joint 10 and arm-tie frame 17, then by processing by the contraction in length of pull bar 16 or lengthening, cause that work capacity is large and efficiency is low.
Summary of the invention
The technical matters that the present invention mainly solves is to provide a kind of crane arm arm joint of adjustable upper set-back.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: the crane arm arm joint that a kind of adjustable upper set-back is provided, it comprises lower boom, with spaced the first top boom of lower boom and the second top boom, be connected in the web member between lower boom and the first top boom and the second top boom and be connected in the first top boom and the second top boom between suspension centre board component, suspension centre board component comprises suspension centre plate, bearing pin and regulating mechanism, on suspension centre plate, be provided with bar hole, bearing pin is arranged in bar hole, and for hinged with rod assembly, regulating mechanism is for regulating the position of bearing pin along bar hole, and then regulate crane arm arm to save the angle with respect to rod assembly.
Wherein, regulating mechanism comprise be arranged at the end that suspension centre plate is adjacent with the first top boom the first adjusting screw(rod) bearing, be arranged at the second adjusting screw(rod) bearing of the end that the first top boom is adjacent with suspension centre plate and be connected in the first adjusting screw(rod) bearing and the second adjusting screw(rod) bearing between adjusting screw(rod), adjusting screw(rod) extends in bar hole through the first adjusting screw(rod) bearing, and then by rotating the position of adjusting screw(rod) along bar hole adjusting bearing pin relative to the first adjusting screw(rod) bearing and the second adjusting screw(rod) bearing.
Wherein, regulating mechanism further comprises the first jam nut being arranged on adjusting screw(rod), and the first jam nut is for relative the first adjusting screw(rod) bearing locking adjusting screw(rod).
Wherein, regulating mechanism further comprises the second jam nut being arranged on adjusting screw(rod), and the second jam nut is for relative the second adjusting screw(rod) bearing locking adjusting screw(rod).
Wherein, regulating mechanism further comprises the base being arranged between adjusting screw(rod) and bearing pin.
Wherein, base slides and is arranged at bar hole.
Wherein, on the first adjusting screw(rod) bearing and described the second adjusting screw(rod) bearing, be respectively arranged with tapped bore, described adjusting screw(rod) is arranged in respectively in the tapped bore of described the first adjusting screw(rod) bearing and described the second adjusting screw(rod) bearing, and then forms screw thread fit.
Wherein, the first top boom is arranged at the root of crane arm arm joint, angle between rod assembly and the first top boom acutangulates, so that proper adjusting screw(rod) is in the time that first direction rotates, adjusting screw(rod) stretches into bar hole, and promote the pulling force that bearing pin overcomes rod assembly and move to the arm spike knot of crane arm arm joint, and then angle between rod assembly and the first top boom diminishes, when adjusting screw(rod) is in the time that the second direction contrary with first direction rotated, adjusting screw(rod) exits bar hole, bearing pin moves to the root of crane arm arm joint under the pulling force effect of rod assembly, and then angle between rod assembly and the first top boom becomes large.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of crane arm is provided, and this crane arm comprises above-mentioned crane arm arm joint.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of hoisting crane is provided, and this hoisting crane comprises above-mentioned crane arm.
The invention has the beneficial effects as follows: the situation that is different from prior art, the suspension centre board component of the crane arm arm joint of the adjustable upper set-back of the present invention comprises suspension centre plate, bearing pin and regulating mechanism, on suspension centre plate, be provided with bar hole, bearing pin is arranged in bar hole, and for hinged with rod assembly, regulating mechanism is for regulating the position of bearing pin along bar hole, and then regulate crane arm arm to save the angle with respect to rod assembly, can regulate by regulating mechanism the upper set-back of crane arm arm joint, and reduce work capacity and raise the efficiency.
Accompanying drawing explanation
Fig. 1 is the constructional drawing of the crane arm arm joint of prior art;
Fig. 2 is the constructional drawing of the crane arm arm joint of first embodiment of the invention;
Fig. 3 is the section-drawing of suspension centre board component in Fig. 2.
The specific embodiment
Refer to Fig. 2 to Fig. 3, Fig. 2 is the constructional drawing of the crane arm arm joint of first embodiment of the invention, and Fig. 3 is the section-drawing of suspension centre board component in Fig. 2.As shown in Figure 2, the crane arm arm joint 20 that this enforcement discloses comprises: lower boom 21, the first top boom 22, the second top boom 23, web member 24 and suspension centre board component 25.Wherein, the first top boom 22 is arranged at the root 201 of crane arm arm joint 20, the first top boom 22 and the second top boom 23 arrange with lower boom 21 intervals, web member 24 is connected between lower boom 21 and the first top boom 22 and the second top boom 23, and suspension centre board component 25 is connected between the first top boom 22 and the second top boom 23.
As shown in Figure 3, suspension centre board component 25 comprises suspension centre plate 251, bearing pin 252 and regulating mechanism 253.Wherein, suspension centre plate 251 is provided with bar hole 254, and bearing pin 252 is arranged in bar hole 254, and bearing pin 252 is for hinged with rod assembly 27.Regulating mechanism 253 is for regulate the position of bearing pin 252 along bar hole 254, and then adjusting crane arm arm joint 20 angle theta with respect to rod assembly 27.Be that angle between rod assembly 27 and the first top boom 22 is θ, angle is acute angle.
In the present embodiment, regulating mechanism 253 comprises the first adjusting screw(rod) bearing 255, the second adjusting screw(rod) bearing 256 and adjusting screw(rod) 257.Wherein, the first adjusting screw(rod) bearing 255 is arranged at the end 258 that suspension centre plate 251 is adjacent with the first top boom 22, the second adjusting screw(rod) bearing 256 is arranged at the first top boom 22 end 221 adjacent with suspension centre plate 251, and adjusting screw(rod) 257 is connected between the first adjusting screw(rod) bearing 255 and the second adjusting screw(rod) bearing 256.Adjusting screw(rod) 257 extends in bar hole 254 through the first adjusting screw(rod) bearing 255, and adjusting screw(rod) 257 regulates the position of bearing pin 252 along bar hole 254 by rotating adjusting screw(rod) 257 with respect to the first adjusting screw(rod) bearing 255 and the second adjusting screw(rod) bearing 256.The diameter of adjusting screw(rod) 257 is preferably less than or equal to the diameter of bar hole 254.Preferably, on the first adjusting screw(rod) bearing 255 and the second adjusting screw(rod) bearing 256, be respectively arranged with tapped bore, adjusting screw(rod) 257 is arranged in respectively in the tapped bore (not indicating) of the first adjusting screw(rod) bearing 255 and described the second adjusting screw(rod) bearing 256, and then forms screw thread fit.
Alternatively, regulating mechanism 253 also comprises the first jam nut 259 and the second jam nut 260 that are arranged on adjusting screw(rod) 257.Wherein, the first jam nut 259 is locked adjusting screw(rod) 257, the second jam nuts 260 for relative the first adjusting screw(rod) bearing 255 and is locked adjusting screw(rod) 257 for relative the second adjusting screw(rod) bearing 256.
Alternatively, regulating mechanism 253 also comprises the base 261 being arranged between adjusting screw(rod) 257 and bearing pin 252, and base 261 preferably slides and is arranged at bar hole 254.By using base 261 can effectively reduce the rigidity wearing and tearing between adjusting screw(rod) 257 and bearing pin 252.
Below describe the control process of the upper set-back of crane arm arm joint 20 in detail.
When crane arm arm saves 20 when sagging, need to increase the upper set-back of crane arm arm joint 20, unclamp the first jam nut 259 and the second jam nut 260, adjusting screw(rod) 257 rotates around first direction, adjusting screw(rod) 257 moves to the arm spike knot 202 of crane arm arm joint 20, adjusting screw(rod) 257 stretches into bar hole 254, and promote the pulling force that bearing pin 252 overcomes rod assembly 27 and move to the arm spike knot 202 of crane arm arm joint 20, so that the angle theta of rod assembly 27 and the first top boom 22 diminishes, and then the upper set-back of crane arm arm joint 20 increases, in the time that the upper set-back of crane arm arm joint 20 is adjusted to applicable position, lock the first jam nut 259 and the second jam nut 260.Wherein, first direction is preferably clockwise direction.
When upwarping of crane arm arm joint 20 spent when large, need to reduce the upper set-back of crane arm arm joint 20, unclamp the first jam nut 259 and the second jam nut 260, adjusting screw(rod) 257 rotates around second direction, adjusting screw(rod) 257 moves to the root 201 of crane arm arm joint 20, adjusting screw(rod) 257 exits bar hole 254, bearing pin 252 moves to the root 201 of crane arm arm joint 20 under the pulling force effect of rod assembly 27, so that the angle theta of rod assembly 27 and the first top boom 22 becomes large, and then the upper set-back of crane arm arm joint 20 reduces, in the time that the upper set-back of crane arm arm joint 20 is adjusted to applicable position, lock the first jam nut 259 and the second jam nut 260.Wherein, second direction is contrary with first direction, and second direction is preferably anticlockwise direction.
Be different from prior art, the invention provides a kind of crane arm arm joint 20 of adjustable upper set-back, can regulate by the regulating mechanism of suspension centre board component 25 253 the upper set-back of crane arm arm joint 20, avoid utilizing other accessory machinerys such as wheel crane or other tower cranes, reduce work capacity and raise the efficiency.In addition, crane arm arm joint 20 of the present invention can also be adjusted to applicable position by upper set-back more exactly.
These are only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes specification sheets of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. the crane arm arm of adjustable upper set-back joint (20), described crane arm arm joint (20) comprises lower boom (21), with spaced the first top boom of described lower boom (21) (22) and the second top boom (23), be connected in the web member (24) between described lower boom (21) and described the first top boom (22) and described the second top boom (23) and be connected in described the first top boom (22) and described the second top boom (23) between suspension centre board component (25), it is characterized in that, described suspension centre board component (25) comprises suspension centre plate (251), bearing pin (252) and regulating mechanism (253), on described suspension centre plate, (251) are provided with bar hole (254), described bearing pin (252) is arranged in described bar hole (254), and for hinged with rod assembly (27), described regulating mechanism (253) is for regulating the position of described bearing pin (252) along described bar hole (254), and then regulate described crane arm arm to save (20) angle with respect to described rod assembly (27).
2. crane arm arm joint according to claim 1 (20), it is characterized in that, described regulating mechanism (253) comprises the first adjusting screw(rod) bearing (255) that is arranged at the end (258) that described suspension centre plate (251) is adjacent with described the first top boom (22), be arranged at the second adjusting screw(rod) bearing (256) of the end (221) that described the first top boom (22) is adjacent with described suspension centre plate (251) and be connected in described the first adjusting screw(rod) bearing (255) and described the second adjusting screw(rod) bearing (256) between adjusting screw(rod) (257), described adjusting screw(rod) (257) extends in described bar hole (254) through described the first adjusting screw(rod) bearing (255), and then regulate the position of described bearing pin (252) along described bar hole (254) by rotating described adjusting screw(rod) (257) relative to described the first adjusting screw(rod) bearing (255) and described the second adjusting screw(rod) bearing (256).
3. crane arm arm joint according to claim 2 (20), it is characterized in that, described regulating mechanism (253) further comprises the first jam nut (259) being arranged on described adjusting screw(rod) (257), and described the first jam nut (259) is locked described adjusting screw(rod) (257) for relatively described the first adjusting screw(rod) bearing (255).
4. crane arm arm joint according to claim 3 (20), it is characterized in that, described regulating mechanism (253) further comprises the second jam nut (260) being arranged on described adjusting screw(rod) (257), and described the second jam nut (260) is locked described adjusting screw(rod) (257) for relatively described the second adjusting screw(rod) bearing (256).
5. crane arm arm joint according to claim 2 (20), is characterized in that, described adjusting machine (253) structure further comprises the base (261) being arranged between described adjusting screw(rod) (257) and described bearing pin (252).
6. crane arm arm joint according to claim 5 (20), is characterized in that, described base (261) slides and is arranged at described bar hole (254).
7. crane arm arm joint according to claim 2 (20), it is characterized in that, on described the first adjusting screw(rod) bearing (255) and described the second adjusting screw(rod) bearing (256), be respectively arranged with tapped bore, described adjusting screw(rod) (257) is arranged in respectively in the tapped bore of described the first adjusting screw(rod) bearing (255) and described the second adjusting screw(rod) bearing (256), and then forms screw thread fit.
8. crane arm arm joint according to claim 1 (20), it is characterized in that, described the first top boom (22) is arranged at the root (201) of described crane arm arm joint, angle between described rod assembly (27) and described the first top boom (22) acutangulates, so that proper described adjusting screw(rod) (257) is in the time that first direction rotates, described adjusting screw(rod) (257) stretches into described bar hole (254), and it is mobile to promote the arm spike knot (202) that pulling force that described bearing pin (252) overcomes described rod assembly (27) saves (20) to described crane arm arm, and then angle between described rod assembly (27) and described the first top boom (22) diminishes, when described adjusting screw(rod) (257) is in the time that the second direction contrary with described first direction rotated, described adjusting screw(rod) (257) exits described bar hole (254), described bearing pin (252) root (201) to described crane arm arm joint (20) under the pulling force effect of described rod assembly (27) is mobile, and then angle between described rod assembly (27) and described the first top boom (22) becomes large.
9. a crane arm, is characterized in that, described crane arm comprises the crane arm arm joint (20) as described in claim 1-8 any one.
10. a hoisting crane, is characterized in that, described hoisting crane comprises crane arm as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410068935.3A CN103818836B (en) | 2014-02-27 | 2014-02-27 | The cargo boom joint of adjustable upper set-back, crane arm and hoisting crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410068935.3A CN103818836B (en) | 2014-02-27 | 2014-02-27 | The cargo boom joint of adjustable upper set-back, crane arm and hoisting crane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103818836A true CN103818836A (en) | 2014-05-28 |
| CN103818836B CN103818836B (en) | 2015-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410068935.3A Active CN103818836B (en) | 2014-02-27 | 2014-02-27 | The cargo boom joint of adjustable upper set-back, crane arm and hoisting crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103818836B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110395668A (en) * | 2019-08-08 | 2019-11-01 | 新疆庞源机械工程有限公司 | A kind of cantilever crane of installation derrick crane attachment pull rod |
| WO2020063007A1 (en) * | 2018-09-30 | 2020-04-02 | 徐工集团工程机械股份有限公司 | Foldable truss section, truss, and crane |
| CN115676652A (en) * | 2022-10-28 | 2023-02-03 | 徐州建机工程机械有限公司 | Connecting and mounting method for crane boom |
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| CN201882820U (en) * | 2010-11-17 | 2011-06-29 | 徐州重型机械有限公司 | Automatic jacking device for buffer rod of variable-amplitude auxiliary arm of wheel crane |
| CN202265344U (en) * | 2011-07-29 | 2012-06-06 | 徐州重型机械有限公司 | Connection frame as well as boom system with same and hoisting machinery |
| CN202390114U (en) * | 2011-12-21 | 2012-08-22 | 上海中联重科桩工机械有限公司 | Arm support limit device and engineering machine |
| CN202808220U (en) * | 2012-09-25 | 2013-03-20 | 中联重科股份有限公司 | Automatic gooseneck boom frame handling device and crane with same |
| CN202829372U (en) * | 2012-06-28 | 2013-03-27 | 三一汽车起重机械有限公司 | Auxiliary arm mechanism and crane |
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2014
- 2014-02-27 CN CN201410068935.3A patent/CN103818836B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201882820U (en) * | 2010-11-17 | 2011-06-29 | 徐州重型机械有限公司 | Automatic jacking device for buffer rod of variable-amplitude auxiliary arm of wheel crane |
| CN202265344U (en) * | 2011-07-29 | 2012-06-06 | 徐州重型机械有限公司 | Connection frame as well as boom system with same and hoisting machinery |
| CN202390114U (en) * | 2011-12-21 | 2012-08-22 | 上海中联重科桩工机械有限公司 | Arm support limit device and engineering machine |
| CN202829372U (en) * | 2012-06-28 | 2013-03-27 | 三一汽车起重机械有限公司 | Auxiliary arm mechanism and crane |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020063007A1 (en) * | 2018-09-30 | 2020-04-02 | 徐工集团工程机械股份有限公司 | Foldable truss section, truss, and crane |
| US11396444B2 (en) | 2018-09-30 | 2022-07-26 | Xuzhou Construction Machinery Group Co., Ltd. | Foldable truss boom section, truss boom and crane |
| CN110395668A (en) * | 2019-08-08 | 2019-11-01 | 新疆庞源机械工程有限公司 | A kind of cantilever crane of installation derrick crane attachment pull rod |
| CN115676652A (en) * | 2022-10-28 | 2023-02-03 | 徐州建机工程机械有限公司 | Connecting and mounting method for crane boom |
| CN115676652B (en) * | 2022-10-28 | 2023-05-09 | 徐州建机工程机械有限公司 | Connecting and mounting method for lifting arm |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103818836B (en) | 2015-08-05 |
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Address after: 415106 Dingcheng City, Changde Province, the town of irrigation district ZOOMLION Creek Industrial Park Patentee after: Zoomlion Heavy Industry Science & Technology Development Co., Ltd. Address before: 410013 Yuelu District, Hunan, silver basin Road, No. 361, No. Patentee before: Zoomlion Heavy Industry Science & Technology Development Co., Ltd. |
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Address after: 410013 Yuelu District, Hunan, silver basin Road, No. 361, No. Patentee after: Zoomlion Heavy Industry Science & Technology Development Co., Ltd. Address before: 415106 Dingcheng City, Changde Province, the town of irrigation district ZOOMLION Creek Industrial Park Patentee before: Zoomlion Heavy Industry Science & Technology Development Co., Ltd. |