CN104071713A - Backward inclining prevention device of stay-rope-type cantilever crane - Google Patents
Backward inclining prevention device of stay-rope-type cantilever crane Download PDFInfo
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- CN104071713A CN104071713A CN201410249680.0A CN201410249680A CN104071713A CN 104071713 A CN104071713 A CN 104071713A CN 201410249680 A CN201410249680 A CN 201410249680A CN 104071713 A CN104071713 A CN 104071713A
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- hinged
- stay
- cantilever crane
- rope
- drag
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Abstract
The invention discloses a backward inclining prevention device of a stay-rope-type cantilever crane. The backward inclining prevention device of the stay-rope-type cantilever crane comprises a disc spring device, a stay rope, a horizontal rod and an inclined rod, wherein the top of the disc spring device is hinged with the lower part of a cantilever crane; one ends of the horizontal rod and the inclined rod are respectively hinged with the front end of a drilling crew; the other ends of the horizontal rod and the inclined rod are hinged mutually to form a stable tripod structure; the upper end of the stay rope is hinged with the bottom of the disc spring device; the lower end of the stay rope is hinged with the hinged point of the horizontal rod and the inclined rod. According to the invention, hinged-type connection is adopted, the device and the cantilever crane are not separated away in the whole amplitude variation process; when the amplitude draws in to be a certain small amplitude, the compressed disc spring is tensioned by the stay rope, so that a balancing effect is achieved; the technical problem that a backward inclining prevention effect can only be realized when a stay bar head reliably enters a bearing seat is solved. The stress is that a chord rod is pressed and a web membrane is pulled relative to the cantilever crane, without improving the intensity and the rigidity of the cantilever crane specifically, thereby improving the safety, and overcoming the defect that a stay-bar-type device is possibly required to be reinforced partially.
Description
Technical field
This invention relates to a kind of safety device of weight-lifting equipment, and particularly a kind of drag-line preventing backward tilting of arm support device, belongs to hoisting crane manufacturing technology field.
Background technology
Hoisting crane utilizes the mechanism of steel rope elevator luffing to have two kinds: a kind of is that along with working range of arm support variation, the luffing mechanism of lifting is complementary luffing mechanism to load hook; Another kind is that luffing mechanism that load hook can level of approximation moves along with the variation of working range of arm support is workability luffing mechanism.The level of approximation of workability luffing mechanism suspension hook moves, the way that relies on raising line to compensate in time the raising line of folding and unfolding certain length realizes, therefore, opposition of self-assembling formation in amplitude changing process, make jib hypsokinesis, particularly may make total luffing power occur negative value during large lifting by a small margin, make the hypsokinesis of jib nature, Condition of Sudden Unloading during in addition, to large lifting by a small margin and the jib hypsokinesis that unloaded wind surface also may cause by a small margin.
At present, existing jib balancing device is and is located at jib Jackstay type balancing device below, it is comprised of strut, disk spring and guide cylinder, guide cylinder root and board are hinged, strut head can only be worked as when jib is received width to certain amplitude and could be contacted with the supporting base being welded on jib root segment, continues to receive width, compact disc spring, strut shortens, and also makes the flexural deformation of jib main chord and pass to web member stressed simultaneously.Here just there are two problems, one: the strut head in relative motion and the supporting base on jib must have failure-free guide piece, just can make both effectively contact, otherwise will not shield.Its two: the crooked web member pressurized of jib main chord, claimed structure itself has enough strength and stiffness.Therefore the reliability of existing Jackstay type anti-squat system is not high, high to the strength and stiffness requirement of jib main chord and web member, has increased manufacture cost of installation.
summary of the invention
Goal of the invention: the object of this invention is to provide a kind of reliability high, manufacture the low drag-line preventing backward tilting of arm support device of cost of installation.
Technical scheme: a kind of drag-line preventing backward tilting of arm support device, comprise dish spring arrangement, drag-line, horizon bar and brace, the top of described dish spring arrangement is articulated with the below of jib; One end of described horizon bar and brace is articulated with respectively the front end of board up and down, and the other end of horizon bar and brace is hinged and forms stable tripod structure; The bottom-hinged of the upper end of described drag-line and dish spring arrangement, the lower end of described drag-line is articulated with the hinge-point of horizon bar and brace.The present invention adopts radial type to connect, the situation that does not exist device and jib to throw off in whole amplitude changing process, when receiving width to certain by a small margin time, drag-line tensioning compact disc spring starts to play equilibrium activity, has solved when strut head must reliably enter supporting base and just can play the technical matters of anti-hypsokinesis effect.Stressed relative jib of the present invention is chord member compression web member tension, does not need to improve especially the strength and stiffness of jib structure.Thereby also relatively improved safety, overcome the defect that Jackstay type device likely needs local stiffening.
Wherein, described dish spring arrangement comprises the housing hinged with jib, is connected pull bar and the disk spring of drag-line; Described disk spring is relatively filled in housing between two, and one end of described pull bar is connected with drag-line through disk spring centre hole, and the other end can in axial direction slide up and down in housing.By compressing between two relatively disk spring, the impact of whole amplitude changing process is cushioned to the balance that realizes whole crane arm support.
In order to guarantee that pull bar can slide along housing axial direction better, is provided with guiding pad between described pull bar and disk spring.
Beneficial effect: the present invention has improved the reliability of jib balancing device effectively, and processing and fabricating is simple, on-the-spot easy for installation, can reduce and manufacture cost of installation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of dish spring arrangement of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, a kind of drag-line preventing backward tilting of arm support device, comprises dish spring arrangement 1, drag-line 2, horizon bar 3 and brace 4, and the top of described dish spring arrangement 1 is articulated with the below of jib 5; One end of described horizon bar 3 and brace 4 is articulated with respectively the front end of board 6 up and down, and the other end of horizon bar 3 and brace 4 is hinged and forms stable tripod structure; The bottom-hinged of the upper end of described drag-line 2 and dish spring arrangement 1, the lower end of described drag-line 2 is articulated with the hinge-point of horizon bar 3 and brace 4.The present invention adopts radial type to connect, the situation that does not exist device and jib 5 to throw off in whole amplitude changing process, when receiving width to certain by a small margin time, drag-line 2 tensioning compact disc springs 1 start to play anti-hypsokinesis effect, have solved when strut head must reliably enter supporting base and just can play the technical matters of equilibrium activity.Stressed relative jib 5 of the present invention is chord member compression web member tensions, does not need to improve especially the strength and stiffness of jib structure.Thereby also relatively improved safety, overcome the defect that Jackstay type device likely needs local stiffening.
As shown in Figure 2, described dish spring arrangement 1 comprises the housing 11 hinged with jib 5, is connected pull bar 12 and the disk spring 13 of drag-line 2; Described disk spring 13 is relatively filled in housing 11 between two, and one end of described pull bar 12 is connected with drag-line 2 through disk spring 13 centre holes, and the other end can in axial direction slide up and down in housing 11.Between described pull bar 12 and disk spring 13, be provided with guiding pad 14.By the compression relatively impact of 13 pairs of whole amplitude changing process of disk spring between two, cushion the balance that realizes whole crane arm support.
Claims (3)
1. a drag-line preventing backward tilting of arm support device, is characterized in that: comprise dish spring arrangement (1), drag-line (2), horizon bar (3) and brace (4), the top of described dish spring arrangement (1) is articulated with the below of jib (5); One end of described horizon bar (3) and brace (4) is articulated with respectively the front end of board (6) up and down, and the other end of horizon bar (3) and brace (4) is hinged and forms stable tripod structure; The bottom-hinged of the upper end of described drag-line (2) and dish spring arrangement (1), the lower end of described drag-line (2) is articulated with the hinge-point of horizon bar (3) and brace (4).
2. drag-line preventing backward tilting of arm support device according to claim 1, is characterized in that: described dish spring arrangement (1) comprises the housing (11) hinged with jib (5), is connected pull bar (12) and the disk spring (13) of drag-line (2); Described disk spring (13) is relatively filled in housing (11) between two, and one end of described pull bar (12) is connected with drag-line (2) through disk spring (13) centre hole, and the other end can in axial direction slide up and down in housing (11).
3. drag-line preventing backward tilting of arm support device according to claim 2, is characterized in that: between described pull bar (12) and disk spring (13), be provided with guiding pad (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410249680.0A CN104071713A (en) | 2014-06-09 | 2014-06-09 | Backward inclining prevention device of stay-rope-type cantilever crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410249680.0A CN104071713A (en) | 2014-06-09 | 2014-06-09 | Backward inclining prevention device of stay-rope-type cantilever crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104071713A true CN104071713A (en) | 2014-10-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410249680.0A Pending CN104071713A (en) | 2014-06-09 | 2014-06-09 | Backward inclining prevention device of stay-rope-type cantilever crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104071713A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105398972A (en) * | 2015-12-12 | 2016-03-16 | 中山科力港口机械有限公司 | Mobile crane with twin-rope grab |
| CN108946529A (en) * | 2018-09-26 | 2018-12-07 | 太原科技大学 | Anti-squat system is played after preceding spademan drag-line is anti- |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08333091A (en) * | 1995-06-08 | 1996-12-17 | Nobuo Nakamura | Apparatus preventing oblique hanging of crane |
| CN102491207A (en) * | 2011-12-20 | 2012-06-13 | 中联重科股份有限公司 | Movable-arm tower crane |
| CN102515045A (en) * | 2011-12-13 | 2012-06-27 | 中联重科股份有限公司 | Variable stiffness buffer apparatus, crane jib back-tilting-resisting apparatus, and crane |
| CN202575788U (en) * | 2012-02-28 | 2012-12-05 | 江苏大通重工有限公司 | Guyed arm support anti-back tilting device of crane |
-
2014
- 2014-06-09 CN CN201410249680.0A patent/CN104071713A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08333091A (en) * | 1995-06-08 | 1996-12-17 | Nobuo Nakamura | Apparatus preventing oblique hanging of crane |
| CN102515045A (en) * | 2011-12-13 | 2012-06-27 | 中联重科股份有限公司 | Variable stiffness buffer apparatus, crane jib back-tilting-resisting apparatus, and crane |
| CN102491207A (en) * | 2011-12-20 | 2012-06-13 | 中联重科股份有限公司 | Movable-arm tower crane |
| CN202575788U (en) * | 2012-02-28 | 2012-12-05 | 江苏大通重工有限公司 | Guyed arm support anti-back tilting device of crane |
Non-Patent Citations (2)
| Title |
|---|
| 李岱月: "动臂式起重机防止动臂后倾装置", 《起重运输机械》, no. 7, 20 July 1996 (1996-07-20), pages 20 - 21 * |
| 王剑华: "柔性拉索单臂架起重机臂架防后倾分析", 《工业安全与环保》, vol. 29, no. 4, 10 April 2003 (2003-04-10), pages 22 - 23 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105398972A (en) * | 2015-12-12 | 2016-03-16 | 中山科力港口机械有限公司 | Mobile crane with twin-rope grab |
| CN108946529A (en) * | 2018-09-26 | 2018-12-07 | 太原科技大学 | Anti-squat system is played after preceding spademan drag-line is anti- |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141001 |