CN203428822U - Marine crane and rotary support structure of arm support thereof - Google Patents
Marine crane and rotary support structure of arm support thereof Download PDFInfo
- Publication number
- CN203428822U CN203428822U CN201320498524.9U CN201320498524U CN203428822U CN 203428822 U CN203428822 U CN 203428822U CN 201320498524 U CN201320498524 U CN 201320498524U CN 203428822 U CN203428822 U CN 203428822U
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- bearing
- anchor shaft
- jib
- inner ring
- diameter section
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Abstract
The utility model discloses a marine crane and a rotary support structure of an arm support thereof. The rotary support structure comprises a tower body and an arm support, wherein a bracket composed of two support seats arranged at an interval is fixedly arranged on the tower body; a fixed shaft of which two ends are respectively arranged on the two support seats is fixedly arranged on the bracket; a bearing block which is rotationally sleeved in the middle part of the fixed shaft through a bearing is fixedly arranged on the arm support; bearing sealing assemblies for sealing the end part of the bearing are respectively arranged at two ends of the bearing block. Compared with a cantilever shaft structure in the prior art, the marine crane and the rotary support structure have the advantages that the torque and the shear stress of the fixed shaft are small, the demands on the material of the shaft are low, and the rotary support stability is good.
Description
Technical field
The utility model relates to a kind of deck crane and jib rotary support structure thereof.
Background technology
Deck crane (claiming again crane) is the weight-lifting equipment that is widely used in Cargo On Deck handling.Deck crane is when handling goods, cargo weight is delivered in jib rotary support structure by jib, traditional jib rotary support structure adopts cantilever fixed axle structure, as shown in Figure 1, stretch out anchor shaft 102 one end that are welded on tower body 103, and jib 101 rotates and is assemblied on the sponson of anchor shaft 102.In jib pitching operation process, jib and anchor shaft sponson relatively rotate, form friction pair, on the one hand, suffered moment of torsion and the shearing stress of the sponson of anchor shaft is all very large, and due to the restriction of size and installation site, the diameter of anchor shaft can not be done greatly, and the material of anchor shaft is had relatively high expectations; On the other hand, the weld of anchor shaft and tower body is prone to weld defect, and not prison welding is solid, and potential safety hazard easily occurs.
Utility model content
The purpose of this utility model is to provide a kind of deck crane jib rotary support structure, the suffered moment of torsion of anchor shaft and the larger problem of shearing stress that in order to solve existing jib rotating bearing structure, adopt cantilever fixed axle structure to cause; The utility model also provides a kind of deck crane that uses this rotary support structure simultaneously.
Deck crane jib rotary support structure of the present utility model adopts following technical scheme: a kind of deck crane jib rotary support structure, comprise tower body and jib, on tower body, be installed with the support being formed by two spaced apart supporting seats, on support, be installed with two ends and be placed in respectively two anchor shafts on supporting seat, on described jib, be installed with by bearing and rotate the bearing seat that is sheathed on anchor shaft middle part, the two ends of bearing seat are respectively equipped with the bearing seal assembly that bearing end is sealed.
Described jib and bearing seat are connected by tightening screw is removable.
Described anchor shaft is stepped shaft left large and right small, described bearing is the oscillating bearing being sheathed on anchor shaft reduced diameter section, and on the reduced diameter section of anchor shaft, be arranged with fixed pillow block terrace and coordinate that bearing inner ring is carried out to spacing axle sleeve, the removable axle end baffle plate being connected with anchor shaft that is installed with outside the supporting base corresponding with anchor shaft reduced diameter section.
The oil passage on described bearing inner ring with circumferential distribution, the end face that anchor shaft reduced diameter section is corresponding is provided with oil hole, and anchor shaft inside has the oiling passage that oil hole is connected with each oil passage, described axle end baffle plate has the hole of dodging of dodging oil hole.
Described bearing seal assembly comprise be installed in bearing seat corresponding end, for the roller bearing end cap of axial lifting axe bearing outer-ring corresponding end and be resisted against bearing inner ring corresponding end spacer, on the outer peripheral face of spacer, be arranged with V-arrangement water seal, the corresponding end of bearing seat is removable to be installed with the V-arrangement water seal of respective side is separately pressed on to the pressing plate that respective shaft socket end covers, and two spacers of two bearing seal assemblies push up respectively and are contained between anchor shaft enlarged diameter section and bearing inner ring and between axle sleeve and bearing inner ring.
Deck crane of the present utility model adopts following technical scheme: a kind of deck crane, comprise that tower body and rotation are assemblied in the jib on tower body, on tower body, be installed with the support being formed by two spaced apart supporting seats, on support, be installed with two ends and be placed in respectively two anchor shafts on supporting seat, on described jib, be installed with by bearing and rotate the bearing seat that is sheathed on anchor shaft middle part, the two ends of bearing seat are respectively equipped with the bearing seal assembly that bearing end is sealed.
Described jib and bearing seat are connected by tightening screw is removable.
Described anchor shaft is stepped shaft left large and right small, described bearing is the oscillating bearing being sheathed on anchor shaft reduced diameter section, and on the reduced diameter section of anchor shaft, be arranged with fixed pillow block terrace and coordinate that bearing inner ring is carried out to spacing axle sleeve, the removable axle end baffle plate being connected with anchor shaft that is installed with outside the supporting base corresponding with anchor shaft reduced diameter section.
The oil passage on described bearing inner ring with circumferential distribution, the end face that anchor shaft reduced diameter section is corresponding is provided with oil hole, and anchor shaft inside has the oiling passage that oil hole is connected with each oil passage, described axle end baffle plate has the hole of dodging of dodging oil hole.
Described bearing seal assembly comprise be installed in bearing seat corresponding end, for the roller bearing end cap of axial lifting axe bearing outer-ring corresponding end and be resisted against bearing inner ring corresponding end spacer, on the outer peripheral face of spacer, be arranged with V-arrangement water seal, the corresponding end of bearing seat is removable to be installed with the V-arrangement water seal of respective side is separately pressed on to the pressing plate that respective shaft socket end covers, and two spacers of two bearing seal assemblies push up respectively and are contained between anchor shaft enlarged diameter section and bearing inner ring and between axle sleeve and bearing inner ring.
Adopt the jib rotary support structure of said structure, because anchor shaft is realized two end supports by two spaced apart supporting bases that set firmly on tower body, on jib, be installed with by bearing and rotate the bearing seat that is sheathed on anchor shaft middle part simultaneously, this articulated structure form of jib makes the stressed more reasonable of anchor shaft, cantilever shaft structure compared to existing technology, the suffered moment of torsion of anchor shaft and shearing stress are less, less demanding to the material of axle, rotatably supported good stability.
Further, jib and bearing seat are connected by bolt is removable, make the processing of jib and bearing seat more convenient, and working accuracy easily guarantees.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing jib rotary support structure;
Fig. 2 is the structural representation of a kind of embodiment of jib rotary support structure of the present utility model;
Fig. 3 is bearing seat in Fig. 2 and the assembling schematic diagram of anchor shaft;
Fig. 4 is the I portion enlarged drawing of Fig. 3;
Fig. 5 is the left view of Fig. 2.
The specific embodiment
The embodiment of deck crane jib rotary support structure of the present utility model: as shown in Figure 2-5, comprise tower body 9 and jib 1, on tower body 9, be welded with the support being formed by two spaced apart supporting bases 8 in left and right, on two supporting bases 8, level is equipped with an anchor shaft 6, anchor shaft 6 is stepped shaft left large and right small, the anchor shaft assembly opening of its enlarged diameter section and left side supporting base coincide coordinate, the anchor shaft assembly opening free-running fit of reduced diameter section and right side supporting base, in this gap, be fitted with an axle sleeve 5.Outside at right side supporting base is fixed with axle end baffle plate 7 by screw, axle end baffle plate 7 is by screw and removable being connected of anchor shaft 6 right-hand members, the right-hand member of axle sleeve 5 and axle end baffle plate 7 apical graftings, the location of having realized like this anchor shaft 6, and anchor shaft 6 adopts the fixed form of two end supports.On the centre portion of anchor shaft 6, by bearing 4 turning sets, be provided with bearing seat 2, bearing seat 2 is connected by tightening screw 3 is removable with jib 1, bearing 4 adopts oscillating bearing, the middle part of bearing seat 2 inner peripheral surfaces has an annular boss, bearing 4 is arranged between annular boss and anchor shaft 6, two ends at bearing saddle bore are respectively equipped with bearing seal assembly, and two bearing seal assemblies have been realized the end part seal of bearing, can guarantee the waterproof and dustproof effect of bearing.
Described bearing seal assembly is installed in annular boss corresponding end by binding bolt, for the roller bearing end cap of axial lifting axe bearing outer-ring and the spacer that is resisted against bearing inner ring corresponding end, binding bolt is located between two end faces of annular boss and circumferentially distributes along annular boss, two roller bearing end caps of such two bearing seal assemblies by outside race axial grip to realize the location of outside race in bearing seat, and two spacers push up respectively and are contained between anchor shaft enlarged diameter section and bearing inner ring and between axle sleeve and bearing inner ring, two spacers cooperatively interact and carry out spacing to bearing inner ring.On the outer peripheral face of spacer, be arranged with a V-arrangement water seal, on the end face of annular boss, be circumferentially distributed with corresponding V-arrangement water seal is pressed on to the pressing plate that respective shaft socket end covers, by V-arrangement water seal, can realize the waterproof and dustproof effect of bearing, each pressing plate is fixed on the corresponding end face of annular boss by the binding bolt of fixed type bearing gland respectively; On the inner peripheral surface of spacer 15, offer closure gasket groove, in closure gasket groove, be embedded with respectively the O-ring seals 14 being sheathed on anchor shaft, further improved the waterproof and dustproof effect of bearing.
As further optimization, the oil passage on described bearing inner ring with circumferential distribution, the end face that anchor shaft reduced diameter section is corresponding is provided with oil hole, and anchor shaft inside has the oiling passage 16 that oil hole is connected with each oil passage, oiling passage 16 by axial passage and with circumferential distribution, form radial passage one to one with each oil passage, described axle end baffle plate 7 has the hole of dodging of dodging oil hole.By oil hole, to bearing, regularly inject lubricating oil, can guarantee the service life of bearing.
During above-described embodiment application, jib 1 is connected to form and is rigidly connected by tightening screw 3 with bearing seat 2, anchor shaft 6 for this rigid connection structure rotation adopts two end supports, by the driving of luffing mechanism, can make jib 1 axle centered by anchor shaft 6 rotate freely, meet the job requirements of deck crane, simultaneously suffered moment of torsion and the shearing stress of anchor shaft 6 is less.
In other embodiments, bearing also can adopt plain bearing, for plain bearing, and the hermetically-sealed construction form that its bearing seal assembly can only adopt end cap and seal ring to coordinate.
In other embodiments, jib and supporting base also can adopt and be wholely set.
In other embodiments, also annular boss can be set, roller bearing end cap and pressing plate are fixed on the corresponding end face of bearing seat by tightening screw.
The embodiment of deck crane of the present utility model: comprise tower body, be rotatably equipped with jib on tower body, as shown in Figure 2-5, consistent with the structure of jib rotary support structure in above-described embodiment, its content does not repeat them here the connection structure of jib and tower body.
Claims (10)
1. a deck crane jib rotary support structure, comprise tower body and jib, it is characterized in that: on tower body, be installed with the support being formed by two spaced apart supporting seats, on support, be installed with two ends and be placed in respectively two anchor shafts on supporting seat, on described jib, be installed with by bearing and rotate the bearing seat that is sheathed on anchor shaft middle part, the two ends of bearing seat are respectively equipped with the bearing seal assembly that bearing end is sealed.
2. deck crane jib rotary support structure according to claim 1, is characterized in that: described jib and bearing seat are connected by tightening screw is removable.
3. deck crane jib rotary support structure according to claim 1 and 2, it is characterized in that: described anchor shaft is stepped shaft left large and right small, described bearing is the oscillating bearing being sheathed on anchor shaft reduced diameter section, and on the reduced diameter section of anchor shaft, be arranged with fixed pillow block terrace and coordinate that bearing inner ring is carried out to spacing axle sleeve, the removable axle end baffle plate being connected with anchor shaft that is installed with outside the supporting base corresponding with anchor shaft reduced diameter section.
4. deck crane jib rotary support structure according to claim 3, it is characterized in that: the oil passage on described bearing inner ring with circumferential distribution, the end face that anchor shaft reduced diameter section is corresponding is provided with oil hole, and anchor shaft inside has the oiling passage that oil hole is connected with each oil passage, described axle end baffle plate has the hole of dodging of dodging oil hole.
5. deck crane jib rotary support structure according to claim 3, it is characterized in that: described bearing seal assembly comprises and being installed in bearing seat corresponding end, for the roller bearing end cap of axial lifting axe bearing outer-ring corresponding end and be resisted against bearing inner ring corresponding end spacer, on the outer peripheral face of spacer, be arranged with V-arrangement water seal, the corresponding end of bearing seat is removable to be installed with the V-arrangement water seal of respective side is separately pressed on to the pressing plate that respective shaft socket end covers, two spacers of two bearing seal assemblies push up respectively and are contained between anchor shaft enlarged diameter section and bearing inner ring and between axle sleeve and bearing inner ring.
6. a deck crane, comprise that tower body and rotation are assemblied in the jib on tower body, it is characterized in that: on tower body, be installed with the support being formed by two spaced apart supporting seats, on support, be installed with two ends and be placed in respectively two anchor shafts on supporting seat, on described jib, be installed with by bearing and rotate the bearing seat that is sheathed on anchor shaft middle part, the two ends of bearing seat are respectively equipped with the bearing seal assembly that bearing end is sealed.
7. deck crane according to claim 6, is characterized in that: described jib and bearing seat are connected by tightening screw is removable.
8. according to the deck crane described in claim 6 or 7, it is characterized in that: described anchor shaft is stepped shaft left large and right small, described bearing is the oscillating bearing being sheathed on anchor shaft reduced diameter section, and on the reduced diameter section of anchor shaft, be arranged with fixed pillow block terrace and coordinate that bearing inner ring is carried out to spacing axle sleeve, the removable axle end baffle plate being connected with anchor shaft that is installed with outside the supporting base corresponding with anchor shaft reduced diameter section.
9. deck crane according to claim 8, it is characterized in that: the oil passage on described bearing inner ring with circumferential distribution, the end face that anchor shaft reduced diameter section is corresponding is provided with oil hole, and anchor shaft inside has the oiling passage that oil hole is connected with each oil passage, described axle end baffle plate has the hole of dodging of dodging oil hole.
10. deck crane according to claim 8, it is characterized in that: described bearing seal assembly comprises and being installed in bearing seat corresponding end, for the roller bearing end cap of axial lifting axe bearing outer-ring corresponding end and be resisted against bearing inner ring corresponding end spacer, on the outer peripheral face of spacer, be arranged with V-arrangement water seal, the corresponding end of bearing seat is removable to be installed with the V-arrangement water seal of respective side is separately pressed on to the pressing plate that respective shaft socket end covers, two spacers of two bearing seal assemblies push up respectively and are contained between anchor shaft enlarged diameter section and bearing inner ring and between axle sleeve and bearing inner ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320498524.9U CN203428822U (en) | 2013-08-15 | 2013-08-15 | Marine crane and rotary support structure of arm support thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320498524.9U CN203428822U (en) | 2013-08-15 | 2013-08-15 | Marine crane and rotary support structure of arm support thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203428822U true CN203428822U (en) | 2014-02-12 |
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ID=50057873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320498524.9U Expired - Lifetime CN203428822U (en) | 2013-08-15 | 2013-08-15 | Marine crane and rotary support structure of arm support thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203428822U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108313877A (en) * | 2018-04-25 | 2018-07-24 | 中船绿洲镇江船舶辅机有限公司 | A kind of detachable idler wheel mechanism of goliath peculiar to vessel |
| CN113401816A (en) * | 2020-03-17 | 2021-09-17 | 四川宏华石油设备有限公司 | Hoisting device |
| CN115321388A (en) * | 2022-09-14 | 2022-11-11 | 徐州建机工程机械有限公司 | Movable arm lifting arm connector device and tower crane |
-
2013
- 2013-08-15 CN CN201320498524.9U patent/CN203428822U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108313877A (en) * | 2018-04-25 | 2018-07-24 | 中船绿洲镇江船舶辅机有限公司 | A kind of detachable idler wheel mechanism of goliath peculiar to vessel |
| CN113401816A (en) * | 2020-03-17 | 2021-09-17 | 四川宏华石油设备有限公司 | Hoisting device |
| CN115321388A (en) * | 2022-09-14 | 2022-11-11 | 徐州建机工程机械有限公司 | Movable arm lifting arm connector device and tower crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140212 |