CN202864479U - Deformation resistance front cantilever crane of bucket-wheel stack reclaimer - Google Patents
Deformation resistance front cantilever crane of bucket-wheel stack reclaimer Download PDFInfo
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- CN202864479U CN202864479U CN201220416914.2U CN201220416914U CN202864479U CN 202864479 U CN202864479 U CN 202864479U CN 201220416914 U CN201220416914 U CN 201220416914U CN 202864479 U CN202864479 U CN 202864479U
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- bucket
- cantilever crane
- jib
- front cantilever
- wheel
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Abstract
The utility model provides a deformation resistance front cantilever crane of a bucket-wheel stack reclaimer. An installing support base of a bucket-wheel mechanism is arranged on the head portion of the front cantilever crane, the tail portion of the front cantilever crane is connected with a stand column through a pin shaft, and the front cantilever crane is pulled up at the position close to a quarter of the bucket-wheel mechanism through a pull rod. The deformation resistance front cantilever crane of the bucket-wheel stack reclaimer is characterized in that an upward-arched arc is arranged on the section between the stand column and a hinge point of the pull rod, the upward-arched radian is between 1/1000 and 2/1000. According to the deformation resistance front cantilever crane of the bucket-wheel stack reclaimer, the front cantilever crane is stressed well, and stress on a hinged support of the pull rod is improved greatly. Meanwhile, deformation resistance capacity of the front cantilever crane is strong, strength and rigidity of the front cantilever crane are both improved, and safe reliability is improved greatly.
Description
Technical field
The utility model relates to a kind of front jib of bucket-wheel stacker reclaimer resistance to deformation, is specially the front jib structure of the front jib of bucket-wheel stacker and bucket wheel reclaimer, particularly large-tonnage bucket-wheel stacker reclaimer.
Background technology
Bucket-wheel stacker reclaimer is a kind of large-scale bulk material conveying equipment that is widely used in the industries such as harbour, electric power, coal, metallurgy, can be divided into bucket-wheel stacker, bucket wheel reclaimer and bucket-wheel stacker reclaimer by function.Bucket-wheel stacker reclaimer is comprised of numerous parts and mechanisms such as bucket-wheel mechanism, front jib, front jib belt feeder, topside, turn table, gate seat, traveling gear, swing type mechanism and trailers.The front jib of bucket-wheel stacker reclaimer generally is welded by back-shaped gusset by twin I-beam, and its length is generally between 20 meters to 50 meters.At the head of front jib one weight being arranged is the bucket-wheel mechanism of 6 to 20 tons of weights, jib before connecting to come pull-up near two pull bars in bucket-wheel mechanism place by bearing pin, the afterbody of front jib links to each other with topside by bearing pin, arrange above the front jib that belt feeder is used for the conveying of material, the width of belt feeder is generally between 1 meter to 3 meters.
Because front jib structure size is larger, needs satisfy the use rigidity requirement when satisfying intensity, and pay the utmost attention to Rigidity in design.At the present main front jib that uses, through the situation of FEM (finite element) calculation with on-the-spot usefulness, the problem of the excessive and insufficient rigidity of ubiquity local stress.
The utility model content
The technical matters that the utility model solves is to provide a kind of novel front jib of bucket-wheel stacker reclaimer, to solve the shortcoming in the above-mentioned background technology.
For the front jib of bucket-wheel stacker reclaimer, two kinds of forms of truss structure and post and beam construction are arranged at present.Truss structure is generally formed by section bar and Plate Welding, and this version is stressed good, and there is not the buildup problem in front jib head, but its welding job amount is very large, if place's welding quality existing problems of front jib just may cause the damage of whole front jib, thereby may cause collapsing of complete machine.What generally use in the engineering at present is jib before the post and beam construction type, and its main body is welded by back-shaped gusset by twin I-beam, and H-girder is comprised of web and upper and lower wing plate, the parallel blanking of web in the time of making.The front jib of this version is easy to make, and compact conformation is convenient to transportation and installation.Front jib as shown in Figure 1 stressed, suffered power has the gravity of head bucket wheel and the digging force Ga of bucket wheel, the pulling force Tbe of pull bar BE, the gravity Gc of front jib self and upper component thereof.The deformation tendency of jib is shown in dotted line before during work, and bucket wheel partly is out of shape maximum, because the gravity of front jib self and upper component thereof, the BD section is deformed into the bow type, and free bearing B place is because the pulling force of pull bar BE is out of shape less herein.
Can find out that from top structure to the forearm frame and force analysis the deficiency that traditional front jib exists mainly contains:
(1) pull bar hinge B place is stressed too large, has potential safety hazard.Because the deadweight of front jib and upper component thereof, pull bar hinge B place is subject to BD section level pulling force to the right.The stressed of pull bar hinge B place (saves the BD section to the power of hinge B vertical direction) as shown in Figure 2, horizontal direction B point is stressed to be FB=Tbe.cos θ+Fdb, can find out that pull bar hinge B place in the horizontal direction is subject to component that power is pull bar force level direction and BD section to the addition of the power of hinge B horizontal direction, in the horizontal direction stressed larger herein, stress value was bigger than normal when this was in finite element analysis computation.On the other hand, the luffing in the time of owing to front jib operation, the stressed variation at hinge B place need to be considered strength at repeated alternation in the time of design.Free bearing is by being fixedly welded on above the front jib, and the safe reliability of free bearing is directly connected to the safe reliability of complete machine.
(2) distortion of front jib is excessive.Because the gravity of front jib self and upper component thereof, the distortion of front jib is larger, if insufficient rigidity then may cause front vibration of arm, also can bring impact to the normal use of other parts and mechanism on the front jib.
In order to solve the series of problems of jib structure pattern before traditional bucket-wheel stacker reclaimer, realize saving cost, strengthen safety and stability, make front jib stressed more reasonable, carried out new design, other stressed key positions such as girder are improved.
A kind of front jib of bucket-wheel stacker reclaimer resistance to deformation, its head is the bucket-wheel mechanism erection support, afterbody links to each other with column by bearing pin, jib before passing through the pull bar pull-up near about 1/4 place of bucket-wheel mechanism, it is characterized in that the section's section between pull bar hinge and column arranges to the arc of arch, the radian of its arch is between 1/1000 to 2/1000.
The preferred post and beam construction type of described front jib, its main body is welded by back-shaped gusset by twin I-beam, and H-girder is comprised of web and upper and lower wing plate, covers to be welded with crossbeam between the upper and lower wing plate of back-shaped gusset and twin I-beam.
Described web is the welding assembly of front jib, and the pre-arch that necessarily makes progress is arranged when it is characterized in that designing and producing.
The version of newly-designed front jib is namely: be set to the arc of arch in the BD section, the radian of its arch generally between 1/1000 to 2/1000, is selected radian according to the tonnage of bucket-wheel stacker reclaimer and the length of front jib.The force and deformation trend of new front jib as shown in Figure 3 because front jib has the pre-arch that necessarily makes progress when designing and producing, the distortion of pre-arch can be offset the distortion of part deadweight, the distortion of front jib reduces, rigidity significantly promotes.The stressed of pull bar hinge B place (saves the BD section to the power of hinge B vertical direction) as shown in Figure 4, the B point is stressed in the horizontal direction is FB=Tbe.cos θ-Fdb, can find out that pull bar hinge B place in the horizontal direction is subject to component that power is pull bar force level direction and BD section subtracting each other the power of hinge B horizontal direction.Compare with traditional front jib, the power that pull bar hinge B place is subject to reduces greatly, and the safe reliability at free bearing place is improved.
The utlity model has following beneficial effect:
The front jib of the utility model version is stressed good, stressed being greatly improved in pull bar free bearing place, and the non-deformability of simultaneously front jib is strong, and the strength and stiffness of front jib all improves, and safe reliability improves greatly.
Description of drawings
The accompanying drawing that consists of the application's a part is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:
The stressed scheme drawing of jib before Fig. 1 tradition.
The stressed scheme drawing in jib pull bar free bearing place before Fig. 2 tradition.
The stressed scheme drawing of front jib that Fig. 3 is new.
The stressed scheme drawing in front jib pull bar free bearing place that Fig. 4 is new.
The front jib section drawing that Fig. 5 is new.
The front jib web scheme drawing that Fig. 6 is new.
The new front jib of Fig. 7 concerns scheme drawing in complete machine.
The block diagram of the front jib that Fig. 8 is new.
Label declaration: 1, web; 2, crossbeam; 3, back-shaped gusset; 4, lower wing plate; 5, upper flange; 6, bucket-wheel mechanism; 7, front jib; 8, hinge; 9, free bearing; 10, pull bar; 11, column.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
The below is take the DQL1200/1200.30 bucket-wheel stacker reclaimer as example, the front jib length of its resistance to deformation is 30 meters, its head is the bucket-wheel mechanism erection support, afterbody links to each other with column by bearing pin, jib before passing through the pull bar pull-up near 7.5 meters of bucket-wheel mechanism, section's section between pull bar hinge and column arranges to the arc of arch, and the radian of its arch is 1.8/1000.Front jib adopts the post and beam construction type, and its main body is welded by back-shaped gusset by twin I-beam, and H-girder is comprised of web and upper and lower wing plate, covers to be welded with crossbeam between the upper and lower wing plate of back-shaped gusset and twin I-beam.The pre-arch that necessarily makes progress when designing and producing, web is arranged.
The manufacturing process of jib is before being somebody's turn to do:
(1) drawing by design adopts the digital controlled cutting machine blanking.Because the length of front jib is 30 meters, in the time of blanking before the web of jib and wing plate be divided into three sections and come blanking, wing plate and web segmentation place are staggered more than the 200mm, wing plate and web segmentation place can not be in segmentations place of front jib, the radian of web comes blanking by 1.8/1000;
(2) welding fabrication.As shown in Figure 5, at first lower wing plate (4), crossbeam (2) are tiled in dull and stereotyped upper and location by size in the design drawing, then back-shaped gusset (3) spot welding is fixed on the lower wing plate (4), and the squareness of assurance and lower wing plate (4), then web (1) is fitted tightly in the upper spot welding of back-shaped gusset (3) and fix, at last upper flange (5) is covered on web (1), and integrated symmetric welding after the assembling remainder;
(3) destressing.Because the unrelieved stress that welding exists is to having a great impact intensity and the fatigue life of front jib, so also need adopt oscillating aging to remove stress.
The above is preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (3)
1. the front jib of a bucket-wheel stacker reclaimer resistance to deformation, its head is the bucket-wheel mechanism erection support, afterbody links to each other with column by bearing pin, jib before passing through the pull bar pull-up near about 1/4 place of bucket-wheel mechanism, it is characterized in that the section's section between pull bar hinge and column arranges to the arc of arch, the radian of its arch is between 1/1000 to 2/1000.
2. the front jib of a kind of bucket-wheel stacker reclaimer resistance to deformation according to claim 1, it is characterized in that, the preferred post and beam construction type of described front jib, its main body is welded by back-shaped gusset by twin I-beam, H-girder is comprised of web and upper and lower wing plate, covers to be welded with crossbeam between the upper and lower wing plate of back-shaped gusset and twin I-beam.
3. the front jib of a kind of bucket-wheel stacker reclaimer resistance to deformation according to claim 2 is characterized in that, described web is the welding assembly of front jib, and the pre-arch that necessarily makes progress is arranged when designing and producing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220416914.2U CN202864479U (en) | 2012-08-22 | 2012-08-22 | Deformation resistance front cantilever crane of bucket-wheel stack reclaimer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220416914.2U CN202864479U (en) | 2012-08-22 | 2012-08-22 | Deformation resistance front cantilever crane of bucket-wheel stack reclaimer |
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| Publication Number | Publication Date |
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| CN202864479U true CN202864479U (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201220416914.2U Expired - Lifetime CN202864479U (en) | 2012-08-22 | 2012-08-22 | Deformation resistance front cantilever crane of bucket-wheel stack reclaimer |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103738738A (en) * | 2013-12-27 | 2014-04-23 | 珠海三一港口机械有限公司 | Bucket wheel material stacking and taking machine |
| CN103950741A (en) * | 2014-04-30 | 2014-07-30 | 钦州学院 | Bucket-wheel material stacking and taking machine containing two-degree-of-freedom closed chain type electric pitching mechanism |
| CN103950736A (en) * | 2014-04-30 | 2014-07-30 | 钦州学院 | Redundancy driving closed-chain bucket wheel stacker reclaimer |
| CN103950739A (en) * | 2014-04-30 | 2014-07-30 | 钦州学院 | Light-weight electric bucket wheel stacker and reclaimer |
| CN111646230A (en) * | 2019-11-25 | 2020-09-11 | 泰富重工制造有限公司 | Bucket wheel body of stacker-reclaimer |
-
2012
- 2012-08-22 CN CN201220416914.2U patent/CN202864479U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103738738A (en) * | 2013-12-27 | 2014-04-23 | 珠海三一港口机械有限公司 | Bucket wheel material stacking and taking machine |
| CN103738738B (en) * | 2013-12-27 | 2016-01-20 | 三一海洋重工有限公司 | Bucket-wheel stacker reclaimer |
| CN103950741A (en) * | 2014-04-30 | 2014-07-30 | 钦州学院 | Bucket-wheel material stacking and taking machine containing two-degree-of-freedom closed chain type electric pitching mechanism |
| CN103950736A (en) * | 2014-04-30 | 2014-07-30 | 钦州学院 | Redundancy driving closed-chain bucket wheel stacker reclaimer |
| CN103950739A (en) * | 2014-04-30 | 2014-07-30 | 钦州学院 | Light-weight electric bucket wheel stacker and reclaimer |
| CN103950739B (en) * | 2014-04-30 | 2015-11-25 | 钦州学院 | Light-weight electric bucket-wheel stacker reclaimer |
| CN103950736B (en) * | 2014-04-30 | 2015-11-25 | 钦州学院 | Redundant drive closed chain formula bucket-wheel stacker reclaimer |
| CN111646230A (en) * | 2019-11-25 | 2020-09-11 | 泰富重工制造有限公司 | Bucket wheel body of stacker-reclaimer |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130410 |
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| CX01 | Expiry of patent term |