CN102910542A - Telescopic boom of marine crane - Google Patents
Telescopic boom of marine crane Download PDFInfo
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- CN102910542A CN102910542A CN2012104161287A CN201210416128A CN102910542A CN 102910542 A CN102910542 A CN 102910542A CN 2012104161287 A CN2012104161287 A CN 2012104161287A CN 201210416128 A CN201210416128 A CN 201210416128A CN 102910542 A CN102910542 A CN 102910542A
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Abstract
The invention discloses a telescopic boom of a marine crane, which comprises a base boom, an oil cylinder telescopic boom and a steel wire rope telescopic boom, wherein a boom pulley is fixed on a head of an oil cylinder through a boom pulley shaft; two sides of the boom pulley shaft are fixed with rollers; a guide rail is fixedly connected in a boom rack; the rollers are pressed on the guide rail; two ends of the boom pulley shaft are fixed with lateral cushion blocks; a guide location device composed of rollers, the guide rail and the lateral cushion blocks can effectively support the head of the oil cylinder; when sea waves roll to produce larger load, the device can effectively limit vertical and horizontal displacements of the oil cylinder and prevent the friction between the oil cylinder and inner wall of the boom rack to influence normal flexibility of the boom rack, as well as protect structures of the oil cylinder and the boom rack from being destroyed; the guide location device is particularly suitable for the telescopic boom of the marine crane.
Description
Technical field
The present invention relates to a kind of telescopic boom of hoisting crane, particularly a kind of telescopic boom for marine crane belongs to the hoisting crane technical field.This technology is " national high-tech research development project (863 Program) subsidy " project patented technology.
Background technology
Marine crane generally adopts the multi-joint telescoping arm configuration, takies the space on deck to save hoisting crane, satisfies simultaneously the requirement of crane job amplitude range.Simultaneously, marine crane is subject to the restriction of boats and ships usage condition, require jib to have less jib sectional dimension to alleviate deadweight, and be subject to the situation that sea wave bumping, hoisting crane are vulnerable to larger lateral load for boats and ships, requirement marine crane particularly jib has higher rigidity and stability, thereby the structure of jib is had higher requirement.
The utility model patent name is called " a kind of hoisting crane stretching structure ", publication number: 2714526, and open day: 2005.8.3, a kind of telescopic boom that is comprised of two cover telescoping mechanisms is disclosed, every cover telescoping mechanism comprises that the one-level oil cylinder is flexible and the one-level steel rope is flexible.This telescopic arm structure generally is used for car hosit, has the mutually characteristics such as independence, dependable performance, work efficiency height of telescoping mechanism.But then there is obvious defective in above-mentioned crane telescopic structure applications Yu Haiyang hoisting crane:
1, in first order telescoping mechanism, the semi-girder pulley is installed in the head of first order oil cylinder, and for ease of installing, first order oil cylinder need stretch out attachment point, thereby when first order oil cylinder was in the semi-girder state, its head was cantilever design, and force-bearing situation is unfavorable.Particularly bear the marine crane of sea wave bumping for needs, the oil cylinder cantilever end is except bearing the effects such as pulley deadweight, steel wire tensioning power, also need bear side direction travelling load and impact load that wave produces, cantilever end easily produces excessive distortion because lacking guiding or anchor fitting, cause in the semi-girder process and produce between jib rubbing, both affected the normal flexible of jib, and easily jib structure had been produced again and damage.
2, be fixed on the interior oil cylinder of jib, its fixed form is the two ends captive joint, and oil cylinder is the statically indeterminate beam structure when the semi-girder state, bears certain moment load under the oil cylinder Gravitative Loads.And when the larger side direction travelling load that when marine crane bears sea wave bumping, produces even impact load, oil cylinder be subject to superfluous constraint restriction and can not by local displacement with the buffering load, thereby section forms the effect of moderate finite deformation internal stress within it, and cylinder structure is damaged easily.
3, in the telescoping mechanism of the second stage, for avoid pulley be installed in oil cylinder cantilever end that the oil cylinder head causes stressed ineffective, affect normally flexible problem of jib, and with the semi-girder pulley arrangements in the 4th joint arm and the 5th space of saving between the arm.But, this arrangement has increased the difference of the sectional dimension of the 4th joint arm and the 5th joint arm, and be to guarantee that the 5th joint arm has enough bearing capacities, can only increase by the 4th joint arm size and can not reduce by the 5th joint arm size, thereby cause the hoisting crane deadweight to increase, this arrangement is especially unfavorable to the exclusive marine crane of conducting oneself with dignity, and steel rope and pulley arrangements are saved between the arm at the 3rd joint arm and the 4th, narrow space, layout inconvenience.
Summary of the invention
The objective of the invention is to solve in the existing marine crane telescopic boom; the semi-girder pulley is fixed on the oil cylinder head, and to cause the oil cylinder head be cantilever design; when hoisting crane bears lateral load that sea wave bumping forms and impact load; the oil cylinder cantilever end easily produces moderate finite deformation; it is normally flexible to affect jib; the shortcomings and deficiencies such as fragile jib structure; a kind of marine crane telescopic boom is provided; at the oil cylinder head that is connected with steel rope guiding and registration device are set; make the oil cylinder head be become the girder construction of 2 supportings by the cantilever design of some supportings; effectively support the fixed oil cylinder head; avoid oil cylinder to produce excessive deformation displacement and affect the normal of jib stretching, the protection jib structure does not damage because of the rubbing effect in flexible.
The present invention realizes that the technical scheme that technical purpose adopts is:
A kind of telescopic boom of marine crane, comprise basic arm, oil cylinder telescopic boom and steel rope telescopic boom, be provided with the oil cylinder retractor device that is formed by oil cylinder and piston rod in the described oil cylinder telescopic boom, be provided with by the semi-girder pulley in the described steel rope telescopic boom, the steel rope retractor device that contracting arm pulley and steel rope form, the afterbody of described piston rod is connected to the afterbody of basic arm, the afterbody of described oil cylinder is connected to the afterbody of oil cylinder telescopic boom, head is connected to the afterbody of steel rope telescopic boom, it is characterized in that: described semi-girder pulley is 2, be socketed in symmetrically respectively the two ends of semi-girder sheave shaft, described semi-girder sheave shaft is fixedly connected on the head of oil cylinder by support, described steel rope one end is fixed on the afterbody of steel rope telescopic boom, the other end is walked around respectively the afterbody that is fixedly connected on basic arm behind two semi-girder pulleys, the part that the semi-girder pulley is stretched out at the two ends of described semi-girder sheave shaft is socketed with respectively roller, the inboard of described steel rope telescopic boom is fixedly connected with two guide rails vertically, described two rollers are pressed in respectively on two guide rails, and described semi-girder sheave shaft also is fixedly connected with respectively lateral cushion block near the end, two ends of steel rope telescopic boom inboard.
A kind of telescopic boom of marine crane, the afterbody of described oil cylinder is fixedly connected with the ear seat of two symmetries, the position of corresponding two ear seats is respectively arranged with axle bed on the madial wall of described oil cylinder telescopic boom, described axle bed is respectively to inside and outside two lateral processes of jib, the inside protrusions of described axle bed is close to corresponding ear seat, correspondence position in described each ear seat and the axle bed is respectively arranged with ear seat pin hole and axle bed pin-and-hole, described each ear seat is connected with corresponding axle bed by bearing pin respectively, described bearing pin and ear seat transition fit, with the axle bed bearing fit, the height of described axle bed pin-and-hole is greater than the diameter of bearing pin, the end of described axle bed also is provided with the axle bed end cap of plate-like, described axle bed end cap is bolted on the axle bed, and the inwall of described axle bed end cap is close to or near the outer end of axle bed pin-and-hole and bearing pin.
A kind of telescopic boom of marine crane, described axle bed pin-and-hole by intermediate rectangular and up and down two semicircles form.
A kind of telescopic boom of marine crane, described steel rope retractor device also comprises horizontal guide wheel, described horizontal guide wheel is fixed on the afterbody of basic arm, described steel rope one end is fixed on the afterbody of steel rope telescopic boom, and the other end is walked around respectively wraparound behind a semi-girder pulley, horizontal guide wheel, another semi-girder pulley and is fixed on the afterbody of steel rope telescopic boom.
A kind of telescopic boom of marine crane, comprise basic arm, first order oil cylinder telescopic boom, second stage oil cylinder telescopic boom and steel rope telescopic boom, be provided with the oil cylinder retractor device that is formed by first order oil cylinder and first order piston rod in the described first order oil cylinder telescopic boom, be provided with the oil cylinder retractor device that is formed by second stage oil cylinder and second stage piston rod in the oil cylinder telescopic boom of the described second stage, be provided with by the semi-girder pulley on the described steel rope telescopic boom, the steel rope retractor device that contracting arm pulley and steel rope form, the afterbody of described first order piston rod is connected to the afterbody of basic arm, the afterbody of described first order oil cylinder is connected to the afterbody of first order oil cylinder telescopic boom, head is connected to the afterbody of second stage oil cylinder telescopic boom, the afterbody of described second stage piston rod is connected to the afterbody of first order oil cylinder telescopic boom, the afterbody of second stage oil cylinder is connected to the afterbody of second stage oil cylinder telescopic boom, and head is connected to the afterbody of steel rope telescopic boom;
Described semi-girder pulley is 2, be socketed in symmetrically respectively the two ends of semi-girder sheave shaft, described semi-girder sheave shaft is fixedly connected on the head of second stage oil cylinder by support, described steel rope one end is fixed on the afterbody of steel rope telescopic boom, the other end is walked around respectively the afterbody that is fixedly connected on first order oil cylinder telescopic boom behind two semi-girder pulleys, the part that the semi-girder pulley is stretched out at the two ends of described semi-girder sheave shaft is socketed with respectively roller, the inboard of described steel rope telescopic boom is fixedly connected with two guide rails vertically, described two rollers are pressed in respectively on two guide rails, and described semi-girder sheave shaft also is fixedly connected with respectively lateral cushion block near the end, two ends of steel rope telescopic boom inboard.
A kind of telescopic boom of marine crane, the afterbody of described first order oil cylinder and second stage oil cylinder is fixedly connected with respectively the ear seat of two symmetries, the position of corresponding ear seat is respectively arranged with axle bed on the madial wall of described first order oil cylinder telescopic boom and second stage oil cylinder telescopic boom, described axle bed is respectively to inside and outside two lateral processes of jib, the inside protrusions of described axle bed is close to corresponding ear seat, correspondence position in described each ear seat and the axle bed is respectively arranged with ear seat pin hole and axle bed pin-and-hole, described each ear seat is connected with corresponding axle bed by bearing pin respectively, described each bearing pin and corresponding ear seat transition fit, with corresponding axle bed bearing fit, the height of described each axle bed pin-and-hole is greater than the diameter of bearing pin, the end of described axle bed also is provided with the axle bed end cap of plate-like, described axle bed end cap is bolted on the axle bed, and the inwall of described axle bed end cap is close to or near the outer end of axle bed pin-and-hole and bearing pin.
A kind of telescopic boom of marine crane, described each axle bed pin-and-hole by intermediate rectangular and up and down two semicircles form.
A kind of telescopic boom of marine crane, described steel rope retractor device also comprises horizontal guide wheel, described horizontal guide wheel is fixed on the afterbody of first order oil cylinder telescopic boom, described steel rope one end is fixed on the afterbody of steel rope telescopic boom, and the other end is walked around respectively wraparound behind a semi-girder pulley, horizontal guide wheel, another semi-girder pulley and is fixed on the afterbody of steel rope telescopic boom.
A kind of telescopic boom of marine crane, each saves and is provided with slide block between the arm, and the gap between the arm joint of described slide block and relative sliding is 2～3 millimeters.
Compared with prior art, characteristics of the present invention are:
1, at the oil cylinder head that is connected with steel rope guiding and registration device are set; make the oil cylinder head be become the girder construction of 2 supportings by the cantilever design of some supportings; effectively support the fixed oil cylinder head, avoid oil cylinder to produce excessive deformation displacement and affect the normal flexible of jib, the protection jib structure does not damage because of the rubbing effect in stretching.
2, the semi-girder pulley is fixed on the oil cylinder head, the problem that avoided the dimension difference of adjacent jib that the semi-girder pulley arrangements is caused between the arms at two joints excessive, jib size and deadweight increases, and make the jib structure characteristics of compact layout, both artistic and practical.
3, oil cylinder is connected with jib by bearing pin, and the height of pin-and-hole is greater than pin diameter, so that bearing pin and oil cylinder end can produce certain vertical displacement, thereby make oil cylinder do the time spent and can produce local displacement to cushion excessive load being subject to sea beat, avoid owing to the moderate finite deformation internal stress is damaged cylinder structure.
4, four joint telescopic booms adopt the flexible flexible structure of one-level steel rope that adds of two-stage oil cylinders, Effective Raise the magnification ratio of jib, save between deck space.Experiment shows: telescopic boom stretches out fully and the Length Ratio of fully retraction can reach 2.9:1.Jib adopts the type of drive of two-stage oil cylinder, and only compares with the jib of one-level hydraulic oil cylinder driving, and the jib integral rigidity is large, more is applicable to often bear the marine crane of sea wave bumping.
5. hoisting crane respectively saves and is provided with slide block between the arm, between the arm of slide block and the relative sliding joint rational gap is set, and can effectively avoid the arm restraining to make dimensional discrepancy and cause jam phenomenon when sliding.
Description of drawings
Fig. 1 is the structural representation of the telescopic boom of marine crane of the present invention.
Fig. 2 is the birds-eye view of Fig. 1.
Fig. 3 is the A-A cutaway view of Fig. 1.
Fig. 4 is the B-B cutaway view of Fig. 1.
Fig. 5 is the C-C cutaway view of Fig. 4.
Among the figure: basic arm 1, oil cylinder telescopic boom 2, first order oil cylinder telescopic boom 21, second stage oil cylinder telescopic boom 22, steel rope telescopic boom 3, oil cylinder 4, first order oil cylinder 41, second stage oil cylinder 42, piston rod 5, first order piston rod 51, second stage piston rod 52, semi-girder pulley 6, contracting arm pulley 7, steel rope 8, horizontal guide wheel 9, semi-girder sheave shaft 10, roller 11, guide rail 12, lateral cushion block 13, ear seat 14, axle bed 15, ear seat pin hole 16, axle bed pin-and-hole 17, bearing pin 18, axle bed end cap 19.
The specific embodiment
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1 and Fig. 2, marine crane telescopic boom provided by the invention, comprise basic arm 1, oil cylinder telescopic boom 2, steel rope telescopic boom 3, wherein, be provided with the oil cylinder retractor device that is formed by oil cylinder 4 and piston rod 5 in the oil cylinder telescopic boom 2, one end of piston rod 5 is connected to the afterbody of basic arm 1, and an end of oil cylinder 4 is connected to the afterbody of oil cylinder telescopic boom 2, and the other end is connected to the afterbody of steel rope telescopic boom 3.Be provided with the steel rope retractor device that is formed by semi-girder pulley 6, contracting arm pulley 7 and steel rope 8 on the steel rope telescopic boom 3.Wherein, semi-girder pulley 6 is 2, is socketed in symmetrically respectively the two ends of semi-girder sheave shaft 10, and semi-girder sheave shaft 10 is fixedly connected on the head of oil cylinder 4 by support.Steel rope 8 one ends that are used for semi-girder are fixed on the afterbody of steel rope telescopic boom 3, and the other end is walked around respectively the afterbody that is fixedly connected on basic arm 1 behind two semi-girder pulleys 6.Contracting arm pulley 7 is fixed on the afterbody of oil cylinder telescopic boom 2, and steel rope 8 one ends that are used for the contracting arm are fixed on the afterbody of steel rope telescopic boom 3, walks around the head that is fixed on basic arm 1 behind the contracting arm pulley 7.
Referring to Fig. 3, the part that semi-girder pulley 6 is stretched out at the two ends of semi-girder sheave shaft 10 is socketed with respectively roller 11, the inboard of steel rope telescopic boom 3 is fixedly connected with two guide rails 12 vertically, two rollers 11 are pressed in respectively on two guide rails 12, and semi-girder sheave shaft 10 also is fixedly connected with respectively lateral cushion block 13 near the end, two ends of steel rope telescopic boom 3 inboards.Guide rail 12 is used for the oil cylinder 4 on support roller 11 and top, the displacement that restriction oil cylinder 4 produces vertically downward, and lateral cushion block 13 is used for restriction oil cylinder 4 and semi-girder pulley 6 displacement in the horizontal direction, prevents that oil cylinder 4 and semi-girder pulley 6 from rubbing with the jib inwall.Marine crane telescopic boom provided by the invention, the semi-girder pulley of oil cylinder head be provided with by roller, guide rail and lateral cushion block form guide locating device provided, can effectively support and the fixed oil cylinder head, level and the vertical displacement of restriction oil cylinder and pulley, oil cylinder is being subject under the lateral loads that sea wave bumping causes also not because of skew and jib inwall generation friction phenomenon, guaranteed the normal flexible of jib, and guaranteed that jib structure is not damaged because of rubbing effect.
Marine crane telescopic boom provided by the invention can also be set to oil cylinder and being connected of jib be flexibly connected.Referring to Fig. 4 and Fig. 5, the end that oil cylinder 4 links to each other with oil cylinder telescopic boom 2 afterbodys is fixedly connected with the ear seat 14 of two symmetries, the position of corresponding two ear seats 14 is respectively arranged with axle bed 15 on the madial wall of oil cylinder telescopic boom 2, to inside and outside two lateral processes of jib, wherein inside protrusions is close to corresponding ear seat 14 to axle bed 15 respectively.Correspondence position in each ear seat 14 and the axle bed 15 is respectively arranged with ear seat pin hole 16 and axle bed pin-and-hole 17, and each ear seat 14 is connected with axle bed 15 by bearing pin 18 respectively.Wherein, bearing pin 18 and ear seat 14 transition fit, with axle bed 15 bearing fits, and the height of axle bed pin-and-hole 17 is greater than the diameter of bearing pin 18, and width is slightly larger than the diameter of bearing pin 18.The end of axle bed 15 also is provided with the axle bed end cap 19 of plate-like, and axle bed end cap 19 is bolted on the axle bed 15, and its inwall is close to or near the outer end of axle bed pin-and-hole 17 and bearing pin 18.The axle bed end cap can prevent that bearing pin from deviating from from axle bed pin-and-hole 17, and is convenient to the maintenance to this hinge system.
The telescopic boom of marine crane provided by the invention; oil cylinder is connected with the pin that is connected to of jib; and the axle bed pin-and-hole height on the jib is greater than pin diameter; thereby make bearing pin and the oil cylinder can be at vertical direction generation micro-displacement; when marine crane is subject to the larger load of sea wave bumping generation; oil cylinder can pass through local micro-displacement buffer portion load; thereby the distortion internal stress in having avoided being rigidly connected causes the destruction to cylinder structure, for protection marine crane structure remarkable effect is arranged.
The telescopic boom of marine crane provided by the invention, oil cylinder is with during the pin of jib is connected, the shape of axle bed pin-and-hole 17 can be rectangle or other shape, but preferably axle bed pin-and-hole 17 is set to by intermediate rectangular and two profile holes that semicircle forms up and down, the profile of two semi-circular hole applying bearing pins 17 up and down, under the high condition of same holes, the scope that bearing pin 17 moves up and down is larger.
The telescopic boom of marine crane provided by the invention, the steel rope retractor device can also comprise horizontal guide wheel 9, horizontal guide wheel 9 is fixed on the afterbody of basic arm 1, steel rope 8 one ends are fixed on the afterbody of steel rope telescopic boom 3, and the other end is walked around respectively a semi-girder pulley 6, horizontal guide wheel 9, another semi-girder pulley 6 rear wraparounds and is fixed on the afterbody of steel rope telescopic boom 3.After the steel rope retractor device increases horizontal guide wheel 9, can only connect pulley with steel cable, what make jib flexiblely has a better synchronism.
The telescopic boom of marine crane provided by the invention, oil cylinder telescopic boom 2 can also for two joint arms, namely comprise first order oil cylinder telescopic boom 21 and second stage oil cylinder telescopic boom 22.First order oil cylinder telescopic boom 21 is provided with the oil cylinder retractor device that is comprised of first order oil cylinder 41 and first order piston rod 51, wherein, the afterbody of first order piston rod 51 is connected to the afterbody of basic arm 1, the afterbody of first order oil cylinder 41 is connected to the afterbody of first order oil cylinder telescopic boom 21, and head is connected to the afterbody of second stage oil cylinder telescopic boom 22.Second stage oil cylinder telescopic boom 22 is provided with the oil cylinder retractor device that is comprised of second stage oil cylinder 42 and second stage piston rod 52, wherein, the afterbody of second stage piston rod 52 is connected to the afterbody of first order oil cylinder telescopic boom 21, the afterbody of second stage oil cylinder 42 is connected to the afterbody of second stage oil cylinder telescopic boom 22, and head is connected to the afterbody of steel rope telescopic boom 3.
Be provided with the steel rope retractor device that is formed by semi-girder pulley 6, contracting arm pulley 7 and steel rope 8 on the steel rope telescopic boom 3.Semi-girder pulley 6 is 2, is socketed in symmetrically respectively the two ends of semi-girder sheave shaft 10, and semi-girder sheave shaft 10 is fixedly connected on the head of second stage oil cylinder 42.Steel rope 8 one ends are fixed on the afterbody of steel rope telescopic boom 3, and the other end is walked around respectively the afterbody that is fixedly connected on first order oil cylinder telescopic boom 21 behind two semi-girder pulleys 6.Contracting arm pulley 7 is fixed on the afterbody of second stage oil cylinder telescopic boom 22, and steel rope 8 one ends that are used for the contracting arm are fixed on the afterbody of steel rope telescopic boom 3, walks around the head that is fixed on first order oil cylinder telescopic boom 21 behind the contracting arm pulley 7.The part that semi-girder pulley 6 is stretched out at the two ends of semi-girder sheave shaft 10 is socketed with respectively roller 11, the inboard of steel rope telescopic boom 3 is fixedly connected with two guide rails 12 vertically, two rollers 11 are pressed in respectively on two guide rails 12, and semi-girder sheave shaft 10 also is fixedly connected with respectively lateral cushion block 13 near the end, two ends of steel rope telescopic boom 3 inboards.
Marine crane telescopic boom provided by the invention adopts the flexible flexible arrangement of one-level steel rope that adds of two-stage oil cylinder, Effective Raise magnification ratio, saved between deck space.Experiment shows: telescopic boom stretches out fully and the Length Ratio of fully retraction can reach 2.9:1.Jib adopts the type of drive of two-stage oil cylinder, and only compares with the jib of one-level hydraulic oil cylinder driving, and the jib integral rigidity is large, more is applicable to often bear the marine crane of sea wave bumping.
Marine crane telescopic boom provided by the invention, when oil cylinder telescopic boom 2 comprised first order oil cylinder telescopic boom 21 and 22 liang of joints of second stage oil cylinder telescopic boom arm, the afterbody of first order oil cylinder 41 and second stage oil cylinder 42 all was connected with the afterbody of first order oil cylinder telescopic boom 21 with second stage oil cylinder telescopic boom 22 by bearing pin 18.The afterbody of first order oil cylinder 41 and second stage oil cylinder 42 is fixedly connected with the ear seat 14 of two symmetries, the position of corresponding ear seat 14 is respectively arranged with axle bed 15 on the madial wall of first order oil cylinder telescopic boom 21 and second stage oil cylinder telescopic boom 22, axle bed 15 is respectively to inside and outside two lateral processes of jib, the inside protrusions of axle bed 15 is close to corresponding ear seat 14, correspondence position in each ear seat 14 and the axle bed 15 is respectively arranged with ear seat pin hole 16 and axle bed pin-and-hole 17, each ear seat 14 is connected with corresponding axle bed 15 by bearing pin 18 respectively, each bearing pin 18 and corresponding ear seat 14 transition fit, with corresponding axle bed 15 bearing fits, the height of each axle bed pin-and-hole 17 is greater than the diameter of bearing pin 18.The end of axle bed 15 also is provided with the axle bed end cap 19 of plate-like, and axle bed end cap 19 is bolted on the axle bed 15, and its inwall is close to or near the outer end of axle bed pin-and-hole 17 and bearing pin 18.Equally, the shape of each axle bed pin-and-hole 17 preferably by intermediate rectangular and up and down two semicircles form.
Marine crane telescopic boom provided by the invention, when oil cylinder telescopic boom 2 comprises first order oil cylinder telescopic boom 21 and 22 liang of joints of second stage oil cylinder telescopic boom arm, horizontal guide wheel 9 is fixed on the afterbody of first order oil cylinder telescopic boom 21, steel rope 8 one ends are fixed on the afterbody of steel rope telescopic boom 3, and the other end is walked around respectively a semi-girder pulley 6, horizontal guide wheel 9, another semi-girder pulley 6 rear wraparounds and is fixed on the afterbody of steel rope telescopic boom 3.
The telescopic boom of marine crane provided by the invention, each saves and is provided with slide block between the arm, and the gap between the arm joint of slide block and relative sliding is 2～3 millimeters, preferred 2.5 millimeters.The gap of slide block and arm joint determines by many experiments, and reasonably the gap can effectively be avoided the arm restraining to make dimensional discrepancy causing jam phenomenon when sliding.
Claims (9)
1. the telescopic boom of a marine crane, comprise basic arm (1), oil cylinder telescopic boom (2) and steel rope telescopic boom (3), be provided with the oil cylinder retractor device that is formed by oil cylinder (4) and piston rod (5) in the described oil cylinder telescopic boom (2), be provided with in the described steel rope telescopic boom (3) by semi-girder pulley (6), the steel rope retractor device that contracting arm pulley (7) and steel rope (8) form, the afterbody of described piston rod (5) is connected to the afterbody of basic arm (1), the afterbody of described oil cylinder (4) is connected to the afterbody of oil cylinder telescopic boom (2), head is connected to the afterbody of steel rope telescopic boom (3), it is characterized in that: described semi-girder pulley (6) is 2, be socketed in symmetrically respectively the two ends of semi-girder sheave shaft (10), described semi-girder sheave shaft (10) is fixedly connected on the head of oil cylinder (4) by support, described steel rope (8) one ends are fixed on the afterbody of steel rope telescopic boom (3), the other end is walked around respectively the afterbody that is fixedly connected on basic arm (1) behind two semi-girder pulleys (6), the part that semi-girder pulley (6) is stretched out at the two ends of described semi-girder sheave shaft (10) is socketed with respectively roller (11), the inboard of described steel rope telescopic boom (3) is fixedly connected with two guide rails (12) vertically, described two rollers (11) are pressed in respectively on two guide rails (12), and described semi-girder sheave shaft (10) also is fixedly connected with respectively lateral cushion block (13) near the inboard end, two ends of steel rope telescopic boom (3).
2. a kind of marine crane telescopic boom according to claim 1, it is characterized in that: the afterbody of described oil cylinder (4) is fixedly connected with the ear seat (14) of two symmetries, the position of corresponding two ear seats (14) is respectively arranged with axle bed (15) on the madial wall of described oil cylinder telescopic boom (2), described axle bed (15) is respectively to inside and outside two lateral processes of jib, the inside protrusions of described axle bed (15) is close to corresponding ear seat (14), correspondence position in described each ear seat (14) and the axle bed (15) is respectively arranged with ear seat pin hole (16) and axle bed pin-and-hole (17), described each ear seat (14) is connected with corresponding axle bed (15) by bearing pin (18) respectively, described bearing pin (18) and ear seat (14) transition fit, with axle bed (15) bearing fit, the height of described axle bed pin-and-hole (17) is greater than the diameter of bearing pin (18), the end of described axle bed (15) also is provided with the axle bed end cap (19) of plate-like, described axle bed end cap (19) is bolted on the axle bed (15), and the inwall of described axle bed end cap (19) is close to or near the outer end of axle bed pin-and-hole (17) and bearing pin (18).
3. the telescopic boom of a kind of marine crane according to claim 2 is characterized in that: described axle bed pin-and-hole (17) by intermediate rectangular and up and down two semicircles form.
4. the telescopic boom of a kind of marine crane according to claim 1, it is characterized in that: described steel rope retractor device also comprises horizontal guide wheel (9), described horizontal guide wheel (9) is fixed on the afterbody of basic arm (1), described steel rope (8) one ends are fixed on the afterbody of steel rope telescopic boom (3), and the other end is walked around respectively a semi-girder pulley (6), horizontal guide wheel (9), the rear wraparound of another semi-girder pulley (6) and is fixed on the afterbody of steel rope telescopic boom (3).
5. marine crane telescopic boom, comprise basic arm (1), first order oil cylinder telescopic boom (21), second stage oil cylinder telescopic boom (22) and steel rope telescopic boom (3), be provided with the oil cylinder retractor device that is formed by first order oil cylinder (41) and first order piston rod (51) in the described first order oil cylinder telescopic boom (21), be provided with the oil cylinder retractor device that is formed by second stage oil cylinder (42) and second stage piston rod (52) in the described second stage oil cylinder telescopic boom (22), be provided with on the described steel rope telescopic boom (3) by semi-girder pulley (6), the steel rope retractor device that contracting arm pulley (7) and steel rope (8) form, the afterbody of described first order piston rod (51) is connected to the afterbody of basic arm (1), the afterbody of described first order oil cylinder (41) is connected to the afterbody of first order oil cylinder telescopic boom (21), head is connected to the afterbody of second stage oil cylinder telescopic boom (22), the afterbody of described second stage piston rod (52) is connected to the afterbody of first order oil cylinder telescopic boom (21), the afterbody of second stage oil cylinder (42) is connected to the afterbody of second stage oil cylinder telescopic boom (22), and head is connected to the afterbody of steel rope telescopic boom (3);
It is characterized in that: described semi-girder pulley (6) is 2, be socketed in symmetrically respectively the two ends of semi-girder sheave shaft (10), described semi-girder sheave shaft (10) is fixedly connected on the head of second stage oil cylinder (42) by support, described steel rope (8) one ends are fixed on the afterbody of steel rope telescopic boom (3), the other end is walked around respectively the afterbody that is fixedly connected on first order oil cylinder telescopic boom (21) behind two semi-girder pulleys (6), the part that semi-girder pulley (6) is stretched out at the two ends of described semi-girder sheave shaft (10) is socketed with respectively roller (11), the inboard of described steel rope telescopic boom (3) is fixedly connected with two guide rails (12) vertically, described two rollers (11) are pressed in respectively on two guide rails (12), and described semi-girder sheave shaft (10) also is fixedly connected with respectively lateral cushion block (13) near the inboard end, two ends of steel rope telescopic boom (3).
6. a kind of marine crane telescopic boom according to claim 5, it is characterized in that: the afterbody of described first order oil cylinder (41) and second stage oil cylinder (42) is fixedly connected with respectively the ear seat (14) of two symmetries, the position of corresponding ear seat (14) is respectively arranged with axle bed (15) on the madial wall of described first order oil cylinder telescopic boom (21) and second stage oil cylinder telescopic boom (22), described axle bed (15) is respectively to inside and outside two lateral processes of jib, the inside protrusions of described axle bed (15) is close to corresponding ear seat (14), correspondence position in described each ear seat (14) and the axle bed (15) is respectively arranged with ear seat pin hole (16) and axle bed pin-and-hole (17), described each ear seat (14) is connected with corresponding axle bed (15) by bearing pin (18) respectively, described each bearing pin (18) and corresponding ear seat (14) transition fit, with corresponding axle bed (15) bearing fit, the height of described each axle bed pin-and-hole (17) is greater than the diameter of bearing pin (18), the end of described axle bed (15) also is provided with the axle bed end cap (19) of plate-like, described axle bed end cap (19) is bolted on the axle bed (15), and the inwall of described axle bed end cap (19) is close to or near the outer end of axle bed pin-and-hole (17) and bearing pin (18).
7. the telescopic boom of a kind of marine crane according to claim 6 is characterized in that: described each axle bed pin-and-hole (17) by intermediate rectangular and up and down two semicircles form.
8. the telescopic boom of a kind of marine crane according to claim 5, it is characterized in that: described steel rope retractor device also comprises horizontal guide wheel (9), described horizontal guide wheel (9) is fixed on the afterbody of first order oil cylinder telescopic boom (21), described steel rope (8) one ends are fixed on the afterbody of steel rope telescopic boom (3), and the other end is walked around respectively a semi-girder pulley (6), horizontal guide wheel (9), the rear wraparound of another semi-girder pulley (6) and is fixed on the afterbody of steel rope telescopic boom (3).
9. a kind of telescopic boom of marine crane according to claim 1 or 5, it is characterized in that: each saves and is provided with slide block between the arm, and the gap between the arm joint of described slide block and relative sliding is 2～3 millimeters.
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| CN201210416128.7A CN102910542B (en) | 2012-10-26 | 2012-10-26 | Telescopic boom of marine crane |
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| CN201210416128.7A CN102910542B (en) | 2012-10-26 | 2012-10-26 | Telescopic boom of marine crane |
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| CN102910542B CN102910542B (en) | 2014-08-06 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103171983A (en) * | 2013-03-27 | 2013-06-26 | 长治清华机械厂 | Three-stage synchronization telescoping mechanism of suspension arm of crane |
| CN103899585A (en) * | 2014-03-03 | 2014-07-02 | 徐州徐工随车起重机有限公司 | Hydraulic control system with two oil cylinders performing orderly telescopic motion, suspension arm mechanism and crane |
| CN107127783A (en) * | 2017-06-12 | 2017-09-05 | 沈阳吉地安风电科技有限公司 | Fan blade hollow inspection platform Intelligent telescopic arm assembly |
| CN107826999A (en) * | 2017-11-29 | 2018-03-23 | 安徽柳工起重机有限公司 | The cylinder pin separate type single-cylinder bolt mechanism of crane arm |
| CN108953277A (en) * | 2018-08-22 | 2018-12-07 | 山西晋煤集团技术研究院有限责任公司 | A kind of adjustable casing power telescopic arm |
| CN110745721A (en) * | 2019-11-30 | 2020-02-04 | 安徽柳工起重机有限公司 | Speed-increasing telescopic mechanism of crane boom |
| CN110812743A (en) * | 2019-11-11 | 2020-02-21 | 长沙中联消防机械有限公司 | Rotating wheel device, rotating wheel device mounting structure, telescopic arm and fire fighting truck |
| CN111661771A (en) * | 2020-04-26 | 2020-09-15 | 武汉船用机械有限责任公司 | Arm support for offshore wind power crane |
| WO2022228477A1 (en) * | 2021-04-27 | 2022-11-03 | 刘素华 | Low-thickness rolling guide telescopic rocker arm |
| CN110745721B (en) * | 2019-11-30 | 2024-04-19 | 安徽柳工起重机有限公司 | Speed-increasing telescopic mechanism of crane boom |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103171983A (en) * | 2013-03-27 | 2013-06-26 | 长治清华机械厂 | Three-stage synchronization telescoping mechanism of suspension arm of crane |
| CN103899585A (en) * | 2014-03-03 | 2014-07-02 | 徐州徐工随车起重机有限公司 | Hydraulic control system with two oil cylinders performing orderly telescopic motion, suspension arm mechanism and crane |
| CN103899585B (en) * | 2014-03-03 | 2016-08-24 | 徐州徐工随车起重机有限公司 | The hydraulic control system of a kind of pair of oil cylinder sequential telescopic, suspension arm mechanism and crane |
| CN107127783A (en) * | 2017-06-12 | 2017-09-05 | 沈阳吉地安风电科技有限公司 | Fan blade hollow inspection platform Intelligent telescopic arm assembly |
| CN107826999A (en) * | 2017-11-29 | 2018-03-23 | 安徽柳工起重机有限公司 | The cylinder pin separate type single-cylinder bolt mechanism of crane arm |
| CN108953277A (en) * | 2018-08-22 | 2018-12-07 | 山西晋煤集团技术研究院有限责任公司 | A kind of adjustable casing power telescopic arm |
| CN108953277B (en) * | 2018-08-22 | 2023-11-24 | 山西晋煤集团技术研究院有限责任公司 | Adjustable sleeve power telescopic arm |
| CN110812743A (en) * | 2019-11-11 | 2020-02-21 | 长沙中联消防机械有限公司 | Rotating wheel device, rotating wheel device mounting structure, telescopic arm and fire fighting truck |
| CN110745721A (en) * | 2019-11-30 | 2020-02-04 | 安徽柳工起重机有限公司 | Speed-increasing telescopic mechanism of crane boom |
| CN110745721B (en) * | 2019-11-30 | 2024-04-19 | 安徽柳工起重机有限公司 | Speed-increasing telescopic mechanism of crane boom |
| CN111661771A (en) * | 2020-04-26 | 2020-09-15 | 武汉船用机械有限责任公司 | Arm support for offshore wind power crane |
| WO2022228477A1 (en) * | 2021-04-27 | 2022-11-03 | 刘素华 | Low-thickness rolling guide telescopic rocker arm |
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