CN103552943B - Fall and the safety device of hypsokinesis for preventing high pedestal jib crane jib - Google Patents
Fall and the safety device of hypsokinesis for preventing high pedestal jib crane jib Download PDFInfo
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- CN103552943B CN103552943B CN201310555430.5A CN201310555430A CN103552943B CN 103552943 B CN103552943 B CN 103552943B CN 201310555430 A CN201310555430 A CN 201310555430A CN 103552943 B CN103552943 B CN 103552943B
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- jib
- sleeve pipe
- stops
- rod assembly
- hypsokinesis
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims abstract description 8
- 230000008878 coupling Effects 0.000 claims abstract description 6
- 238000010168 coupling process Methods 0.000 claims abstract description 6
- 238000005859 coupling reaction Methods 0.000 claims abstract description 6
- 230000009471 action Effects 0.000 claims description 6
- 230000001050 lubricating effect Effects 0.000 claims description 6
- 241000755266 Kathetostoma giganteum Species 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Jib Cranes (AREA)
Abstract
The invention discloses a kind of for preventing high pedestal jib crane jib from falling and the safety device of hypsokinesis, comprising the active pull rod assembly be connected between the column of high pedestal jib crane and jib; Active pull rod assembly comprises rod assembly and is matched in the thimble assembly of its periphery, and rod assembly comprises pull bar and is connected to limiting stopper and the jib end earrings at its two ends; Thimble assembly comprises sleeve pipe and is connected to stud end earrings and the stops at its two ends, stud end earrings and stops are respectively by the closed at both ends of sleeve pipe, the axial centre of stops has through hole, the limiting stopper end of rod assembly is arranged in the inner chamber of sleeve pipe, jib end earrings is positioned at outside the stops coupling end of sleeve pipe, pull bar is through the through hole of stops axial centre, and limiting stopper can slide along the inwall of sleeve pipe.Jib active pull rod assembly in normal amplitude changing process is in the free state of not bearing load.Can prevent falling and hypsokinesis of jib, use safety coefficient is high, cost-saving simultaneously.
Description
Technical field
The present invention relates to a kind of high pedestal jib crane, be specifically related to a kind of jib fall arrest of high pedestal jib crane and the safety device of hypsokinesis.
Background technology
A kind of its elevator boom rack of the high pedestal jib crane of rope luffing that adopts at present on harbour, harbour, goods yard and boats and ships is substantially without the safety device independently preventing from falling, once variable-amplitude steel wire rope fracture in hoisting crane working process, the jib of hoisting crane will directly fall in ground, deck or water, will cause serious life property damage.The mode that the high pedestal jib crane of current employing rope luffing prevents jib from falling mainly adopts the reductor of dual output high speed shaft on luffing mechanism, and establishes a drg (two braking) in high speed shaft position, every side respectively by brake wheel (sheet).But this mode existing defects: if the jib of the high speed shaft fracture hoisting crane of reductor will fall, serious life property damage can be caused.In addition, adopt the high pedestal jib crane of rope luffing to prevent the appropriate location of the device of jib hypsokinesis mainly between jib and column from setting up separately spacing bearing to prevent jib hypsokinesis at present, this mode oad is large, installs inconvenient.
Summary of the invention
The object of the present invention is to provide a kind of safe and reliable, can prevent jib from falling and the device of hypsokinesis simultaneously.
Provided by the invention this for preventing high pedestal jib crane jib from falling and the safety device of hypsokinesis, comprise active pull rod assembly, active pull rod assembly comprises rod assembly and is matched in the thimble assembly of its periphery, rod assembly comprises pull bar, limiting stopper and jib end earrings, limiting stopper and jib end earrings are connected to the two ends of pull bar, and the outside of limiting stopper is connected with stud end bump rubber; Thimble assembly comprises sleeve pipe, stud end earrings and stops, stud end earrings and stops are connected to the two ends of sleeve pipe, the respective end of sleeve pipe is closed by the inner end surface of stud end earrings, the other end of sleeve pipe is closed by stops, the axial centre of stops has through hole, the inner is connected with jib end bump rubber, the limiting stopper end of rod assembly is arranged in the inner chamber of sleeve pipe, jib end earrings is positioned at outside the stops coupling end of sleeve pipe, and pull bar is through the through hole of stops axial centre, and limiting stopper can slide along the inwall of sleeve pipe; The stud end earrings of thimble assembly and the jib end earrings of rod assembly are connected between high pedestal jib crane column and jib respectively by column bearing and jib bearing.The length of pull bar meets the normal luffing of crane arm support, to ensure that jib active pull rod assembly in normal amplitude changing process is in the free state of not bearing load.When the variable-amplitude steel wire rope of hoisting crane or reductor shaft fracture, jib loses pulling force and drops under its Action of Gravity Field, the pull bar be connected with jib bearing by jib end earrings is automatically pulled out, until the jib end bump rubber that the limiting stopper of pull bar the inner and stops in sleeve pipe connect contacts, jib is directly held and is prevented it from falling by active pull rod assembly; The pull bar of active pull rod assembly is in retracted position in the normal amplitude changing process of jib, because of wind carry or jib angle limit damage time jib by hypsokinesis, the elevation angle of jib hypsokinesis is greater than it when being in the elevation angle of minimum amplitude value, and the stud end bump rubber of rod assembly contacts with the inner end surface of thimble assembly stud end earrings the continuation hypsokinesis stoping jib.
Described stud end bump rubber is connected to the outer end of limiting stopper by flathead screw, the outer face of limiting stopper has connecting thread hole vertically, stud end bump rubber has the corresponding counter sink that position is corresponding.
The sidewall of described limiting stopper has the oilway of some annulars.
The cross sectional shape of described stops is T-shaped, and the outer wall of its reduced diameter section has screw thread, and the outer face of its enlarged diameter section has circular hole vertically.
Described jib end bump rubber is connected to the outer end of described stops reduced diameter section by flathead screw, the outer face of stops reduced diameter section has tapped bore vertically, the corresponding counter sink that jib end bump rubber has position corresponding, the axial centre of jib end bump rubber has the hole passed for described pull bar.
The through-hole wall of described stops axial centre has the oil seal groove of some annulars, has oil sealing in oil seal groove.
The upside of described sleeve pipe is connected with lubricating cup, its sidewall has corresponding lubricating cup mounting hole, and the two ends, downside of sleeve pipe are respectively arranged with deflation hole.
Along the circular hole longitudinal center line of described sleeve pipe all had perpendicular to sleeve pipe longitudinal center line on described stud end earrings and jib end earrings, all there is oscillating bearing in circular hole, in the endoporus of oscillating bearing, have corresponding bearing pin.
Principle of work of the present invention is as follows: the two ends of active pull rod assembly are connected respectively by the jib bearing of appropriate location on left and right chord member above the column bearing of bearing pin, baffle plate and bolt and column front left and right sides and jib, jib and column are linked to be an entirety.Because the effective length of pull bar is greater than the maxim of jib changes in amplitude, the effective length of sleeve pipe is greater than pull bar actv. length, so during the luffing range of cantilever support of hoisting crane, the pull bar of active pull rod assembly is automatic telescopic by the change along with jib amplitude, but whole active pull rod assembly is in the free state of not bearing load; When variable-amplitude steel wire rope or reductor shaft rupture suddenly, jib loses pulling force and drops under its Action of Gravity Field, the pull bar be now connected with jib bearing will be automatically pulled out, when the limiting stopper of pull bar the inner contacts with the jib end bump rubber that stops in sleeve pipe connects, jib is directly held by active pull rod assembly, thus reaches and prevent jib from falling; Because the pull bar of active pull rod assembly is in retracted position all the time in the normal amplitude changing process of jib, and because of wind carry or jib angle limit damage time, jib is by hypsokinesis, when the elevation angle of jib hypsokinesis to be in the elevation angle of minimum amplitude value slightly larger than it, the stud end bump rubber that in the total packaged tube of active pull rod, limiting stopper inner with pull bar connects contacts with the inner end surface of stud end earrings, the hypsokinesis action of jib is prevented from rearward tumbling again, thus reaches the object preventing jib hypsokinesis.
Compare with prior art, a device has multiple function, and can prevent falling and hypsokinesis of jib, use safety coefficient is high simultaneously, and structure is simple simultaneously, cost-saving.
Accompanying drawing explanation
Fig. 1 is using state schematic diagram of the present invention.
Fig. 2 is that A in Fig. 1 is to enlarged diagram.
Fig. 3 is the enlarged diagram of active pull rod assembly structure in Fig. 2.
Detailed description of the invention
As shown in Figure 1 to Figure 3, provided by the invention this for preventing the jib of high pedestal jib crane from falling and the safety device of hypsokinesis, comprise two covers and be connected to active pull rod assembly 5 between the column 3 of high pedestal jib crane and jib 1 respectively by corresponding heel post bearing 4 and jib bearing 6.
Active pull rod assembly 5 comprises rod assembly 51 and is matched in the thimble assembly 52 of its periphery, and rod assembly comprises pull bar 511, limiting stopper 512 and jib end earrings 513, and limiting stopper 512 and jib end earrings 513 are vertically connected at the two ends of pull bar 511 respectively.Thimble assembly 52 comprises sleeve pipe 521, stud end earrings 522 and stops 523, stud end earrings 522 and stops 523 are connected to the two ends of sleeve pipe 521, the respective end of sleeve pipe 521 is closed by the inner end surface of stud end earrings 522, the other end of sleeve pipe 521 is closed by stops 523, and the axial centre of stops has through hole.The limiting stopper end of rod assembly 51 is arranged in the inner chamber of sleeve pipe 521, jib end earrings 513 is positioned at outside the stops coupling end of sleeve pipe 521, and pull bar 511, through the through hole of stops 523 axial centre, is free-running fit between the inwall of limiting stopper 512 and sleeve pipe 521.The structure of similar hydraulic ram is formed between rod assembly 51 and thimble assembly 52.The effective length of pull bar 511 is greater than the maxim of crane arm support 1 changes in amplitude, and the effective length of sleeve pipe 521 is greater than the effective length of pull bar 511.
The outside of limiting stopper 512 has been bolted stud end bump rubber 514, and the outer face of limiting stopper 512 has connecting thread hole vertically, stud end bump rubber 514 has the corresponding counter sink that position is corresponding.The sidewall of limiting stopper 512 has the oilway 5121 of some annulars.
The cross sectional shape of stops 523 is T-shaped, and the outer wall of its reduced diameter section has screw thread, outer face has tapped bore vertically, and the outer face of its enlarged diameter section has circular hole vertically.The inner of stops 523 is connected with jib end bump rubber 524 by flathead screw, and jib end bump rubber 524 has the corresponding counter sink corresponding to stops 523 upper screwed hole position, the axial centre of jib end bump rubber 524 has the hole passed for pull bar 511.The through-hole wall of stops 523 axial centre has the oil seal groove of some annulars, has oil sealing 7 in oil seal groove.
Be bolted for being threaded, between outer face and the enlarged diameter section of stops 523 between the inwall of the stops coupling end of sleeve pipe 521 and the reduced diameter section sidewall of stops 523, the inwall of the stops coupling end of sleeve pipe 521 has the negative thread corresponding to outside thread on stops 523, there is the respective screw hole corresponding with circular hole position on stops 523 outer end.
The upside of sleeve pipe 521 is connected with lubricating cup 8, its sidewall has corresponding lubricating cup mounting hole, and the two ends, downside of sleeve pipe 521 are respectively arranged with deflation hole 5211.
Along the circular hole longitudinal center line of sleeve pipe 521 all had perpendicular to sleeve pipe 521 longitudinal center line on stud end earrings 522 and jib end earrings 513, all there is oscillating bearing 9 in circular hole, in the endoporus of oscillating bearing 9, have corresponding bearing pin 10.
During installation, then the two ends of two cover active pull rod assemblies 5 are installed on corresponding bearing respectively by bearing pin 10 and baffle plate 11 and bolt assembly by the first position welding column bearing 4 of appropriate location and jib bearing 6 on the chord member of left and right above the left and right sides and jib 1 in column 3 front.Column bearing 4 and jib bearing 6 bearing all for being welded with the riser being positioned at base both sides by base, the earrings at active pull rod assembly 5 two ends is sandwiched in two risers of bearing, bearing pin 10 is through oscillating bearing 9, its two ends are each passed through the mounting hole on corresponding bearing riser, and the baffle plate 11 then connected by its one end is connected with bolt between riser.
The particular location of column bearing 4 and jib bearing 6 is selected to ensure to have between the stud end of sleeve pipe 521 inner chamber and stud end bump rubber 514 to ensure that the gap value of pull bar free-extension is as the criterion.Deflation hole 5211 on the downside of sleeve pipe 521 is for discharging air when pull bar 511 stretches in sleeve pipe 521 inner chamber.There is certain amount of floating when oscillating bearing in the earrings of active pull rod assembly two ends is for ensureing that pull bar stretches and column bearing 4, jib bearing 6 junction, makes its reasonable stress.
Principle of work of the present invention is as follows: the two ends of active pull rod assembly 5 are connected respectively by the jib bearing 6 of appropriate location on left and right chord member above the column bearing 4 of bearing pin 10, baffle plate 11 and bolt and column 3 front left and right sides and jib 1, and jib 1 and column 3 are linked to be an entirety.Because the effective length of pull bar 511 is greater than the maxim of jib 1 changes in amplitude, the effective length of sleeve pipe 521 is greater than the effective length of pull bar 511, so during the luffing range of cantilever support of hoisting crane, the pull bar 511 of active pull rod assembly 5 is automatic telescopic by the change along with jib 1 amplitude, but whole active pull rod assembly is in the free state of not bearing load; When variable-amplitude steel wire rope 2 or reductor shaft rupture suddenly, jib 1 loses pulling force and drops under its Action of Gravity Field, the pull bar 511 be now connected with jib bearing 6 will be automatically pulled out, when the limiting stopper 512 of pull bar 511 the inner contacts with the jib end bump rubber 524 that stops in sleeve pipe 521 523 connects, jib 1 is directly held by active pull rod assembly 5, thus reaches and prevent jib 1 from falling; Because the pull bar 511 of active pull rod assembly 5 is in retracted position all the time in the normal amplitude changing process of jib 1, and because of wind carry or jib 1 angle limit damage time, jib 1 is by hypsokinesis, when the elevation angle of jib 1 hypsokinesis to be in the elevation angle of minimum amplitude value slightly larger than it, contact with the inner end surface of stud end earrings 522 with the stud end bump rubber 514 that the inner limiting stopper 512 of pull bar 511 connects in active pull rod assembly 5 sleeve pipe 521, the hypsokinesis action of jib 1 is prevented from rearward tumbling again, thus reaches the object preventing jib 1 hypsokinesis.
Claims (8)
1. one kind for preventing high pedestal jib crane jib from falling and the safety device of hypsokinesis, it is characterized in that: this device comprises active pull rod assembly, active pull rod assembly comprises rod assembly and is matched in the thimble assembly of its periphery, rod assembly comprises pull bar, limiting stopper and jib end earrings, limiting stopper and jib end earrings are connected to the two ends of pull bar, and the outside of limiting stopper is connected with stud end bump rubber; Thimble assembly comprises sleeve pipe, stud end earrings and stops, stud end earrings and stops are connected to the two ends of sleeve pipe, the respective end of sleeve pipe is closed by the inner end surface of stud end earrings, the other end of sleeve pipe is closed by stops, the axial centre of stops has through hole, the inner is connected with jib end bump rubber, the limiting stopper end of rod assembly is arranged in the inner chamber of sleeve pipe, jib end earrings is positioned at outside the stops coupling end of sleeve pipe, and pull bar is through the through hole of stops axial centre, and limiting stopper can slide along the inwall of sleeve pipe; The stud end earrings of thimble assembly and the jib end earrings of rod assembly are connected between high pedestal jib crane column and jib respectively by column bearing and jib bearing;
The length of pull bar meets the normal luffing of crane arm support, to ensure that jib active pull rod assembly in normal amplitude changing process is in the free state of not bearing load;
When the variable-amplitude steel wire rope of hoisting crane or reductor shaft fracture, jib loses pulling force and drops under its Action of Gravity Field, the pull bar be connected with jib bearing by jib end earrings is automatically pulled out, until the jib end bump rubber that the limiting stopper of pull bar the inner and stops in sleeve pipe connect contacts, jib is directly held and is prevented it from falling by active pull rod assembly; The pull bar of active pull rod assembly is in retracted position in the normal amplitude changing process of jib, because of wind carry or jib angle limit damage time jib by hypsokinesis, the elevation angle of jib hypsokinesis is greater than it when being in the elevation angle of minimum amplitude value, and the stud end bump rubber of rod assembly contacts with the inner end surface of thimble assembly stud end earrings the continuation hypsokinesis stoping jib.
2. as claimed in claim 1 for preventing high pedestal jib crane jib from falling and the safety device of hypsokinesis, it is characterized in that: described stud end bump rubber is connected to the outer end of limiting stopper by flathead screw, the outer face of limiting stopper has connecting thread hole vertically, stud end bump rubber has the corresponding counter sink that position is corresponding.
3., as claimed in claim 1 for preventing high pedestal jib crane jib from falling and the safety device of hypsokinesis, it is characterized in that: the outer wall of described limiting stopper has the oilway of some annulars.
4., as claimed in claim 1 for preventing high pedestal jib crane jib from falling and the safety device of hypsokinesis, it is characterized in that: the cross sectional shape of described stops is T-shaped, and the outer wall of its reduced diameter section has screw thread, and the outer face of its enlarged diameter section has circular hole vertically.
5. as claimed in claim 3 for preventing high pedestal jib crane jib from falling and the safety device of hypsokinesis, it is characterized in that: described jib end bump rubber is connected to the outer end of described stops reduced diameter section by flathead screw, the outer face of stops reduced diameter section has tapped bore vertically, the corresponding counter sink that jib end bump rubber has position corresponding, the axial centre of jib end bump rubber has the hole passed for described pull bar.
6., as claimed in claim 1 for preventing high pedestal jib crane jib from falling and the safety device of hypsokinesis, it is characterized in that: the through-hole wall of described stops axial centre has the oil seal groove of some annulars, has oil sealing in oil seal groove.
7. as claimed in claim 1 for preventing high pedestal jib crane jib from falling and the safety device of hypsokinesis, it is characterized in that: the upside of described sleeve pipe is connected with lubricating cup, its sidewall has corresponding lubricating cup mounting hole, the two ends, downside of sleeve pipe are respectively arranged with deflation hole.
8. as claimed in claim 1 for preventing high pedestal jib crane jib from falling and the safety device of hypsokinesis, it is characterized in that: along the circular hole longitudinal center line of described sleeve pipe all had perpendicular to sleeve pipe longitudinal center line on described stud end earrings and jib end earrings, all there is oscillating bearing in circular hole, in the endoporus of oscillating bearing, have corresponding bearing pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310555430.5A CN103552943B (en) | 2013-11-11 | 2013-11-11 | Fall and the safety device of hypsokinesis for preventing high pedestal jib crane jib |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310555430.5A CN103552943B (en) | 2013-11-11 | 2013-11-11 | Fall and the safety device of hypsokinesis for preventing high pedestal jib crane jib |
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| Publication Number | Publication Date |
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| CN103552943A CN103552943A (en) | 2014-02-05 |
| CN103552943B true CN103552943B (en) | 2016-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310555430.5A Active CN103552943B (en) | 2013-11-11 | 2013-11-11 | Fall and the safety device of hypsokinesis for preventing high pedestal jib crane jib |
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Families Citing this family (1)
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| CN110589696B (en) * | 2019-09-19 | 2021-03-02 | 青岛海西重机有限责任公司 | Steel wire rope luffing jib loading boom anti-falling device and crane |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2834659B2 (en) * | 1993-12-17 | 1998-12-09 | 住友建機株式会社 | Crane Boom Back Stop Breakage Prevention Device |
| JP3298622B2 (en) * | 1998-10-01 | 2002-07-02 | 住友重機械建機クレーン株式会社 | Crane backstop shock absorber |
| CN201071853Y (en) * | 2007-08-06 | 2008-06-11 | 长沙中联重工科技发展股份有限公司 | Floating piston type oil storing cylinder used for caterpiller crane |
| CN201358973Y (en) * | 2009-03-06 | 2009-12-09 | 上海三一科技有限公司 | Oil storage type retroversion prevention oil cylinder for sub-arm fixing mast on crawler crane |
| CN201647863U (en) * | 2010-03-09 | 2010-11-24 | 徐州重型机械有限公司 | Back-tilting prevention device of tower arm and crane comprising same |
| CN102408073B (en) * | 2010-09-25 | 2014-04-09 | 徐州重型机械有限公司 | Crane and anti-tipback cylinder thereof |
| 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 |
| WO2013013414A1 (en) * | 2011-07-28 | 2013-01-31 | 长沙中联重工科技发展股份有限公司 | Derrick tower crane and anti-tipping device thereof |
| CN203568733U (en) * | 2013-11-11 | 2014-04-30 | 湖南中铁五新重工有限公司 | Safe device for preventing falling and backward tilting of cantilever rack of gantry crane |
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Denomination of invention: Safety device for preventing gantry crane boom from falling and retroverting Effective date of registration: 20180320 Granted publication date: 20160210 Pledgee: Bank of Changsha Limited by Share Ltd. Liuyang branch Pledgor: CHINA RAILWAY WUXIN HEAVY INDUSTRY Co.,Ltd. Registration number: 2018430000019 |
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Date of cancellation: 20220315 Granted publication date: 20160210 Pledgee: Bank of Changsha Limited by Share Ltd. Liuyang branch Pledgor: CHINA RAILWAY WUXIN HEAVY INDUSTRY Co.,Ltd. Registration number: 2018430000019 |
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Denomination of invention: Safety device for preventing the boom of portal crane from falling and tilting back Effective date of registration: 20220331 Granted publication date: 20160210 Pledgee: Changsha Liuyang sub branch of China Everbright Bank Co.,Ltd. Pledgor: CHINA RAILWAY WUXIN HEAVY INDUSTRY Co.,Ltd. Registration number: Y2022980003294 |
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Date of cancellation: 20230523 Granted publication date: 20160210 Pledgee: Changsha Liuyang sub branch of China Everbright Bank Co.,Ltd. Pledgor: CHINA RAILWAY WUXIN HEAVY INDUSTRY Co.,Ltd. Registration number: Y2022980003294 |
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Denomination of invention: Safety device used to prevent the gantry crane boom from falling and tilting backwards Effective date of registration: 20230525 Granted publication date: 20160210 Pledgee: Changsha Liuyang sub branch of China Everbright Bank Co.,Ltd. Pledgor: CHINA RAILWAY WUXIN HEAVY INDUSTRY Co.,Ltd. Registration number: Y2023980041881 |
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