CN204689457U - A kind of compliant bracing frame - Google Patents
A kind of compliant bracing frame Download PDFInfo
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- CN204689457U CN204689457U CN201520304610.0U CN201520304610U CN204689457U CN 204689457 U CN204689457 U CN 204689457U CN 201520304610 U CN201520304610 U CN 201520304610U CN 204689457 U CN204689457 U CN 204689457U
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- bracing frame
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- jib
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Abstract
The utility model discloses a kind of compliant bracing frame, it comprises joist, spherical hinge device, support beam, bracing frame body and base; Wherein, the top of bracing frame body is fixedly connected with integral by tie-beam; The upper surface of joist for supporting the head of large-scale floating crane jib, lower surface is fixedly connected with spherical hinge device, the spherical groove seat of spherical hinge device is welded on support beam; Base is split-type structural; comprise the upper and lower base of stacked placement; planar slip layer is also provided with between upper bed-plate and lower bottom base; large-scale floating crane jib can being obedient to each to minor rotation along the horizontal plane under the impact of seawer tide, ocean current with hull, not causing damage because being hit to protect each component of jib.Adopt the utility model to assist the installation carrying out large-scale floating crane jib, main installation work amount can be transferred to land by sea and carry out, its installation difficulty is little, efficiency is high, the cycle is short, cost is low, safety, is suitable for all weather operations.
Description
Technical field
The utility model relates to a kind of installation auxiliary device of ship's crane, particularly relates to a kind of compliant bracing frame.
Background technology
Large ocean engineer equipment, because of its oversize, super large weight and special applying working condition, make its assembling and maintenance activity process very complicated, the disassembling operations cycle is long, control difficulty is very large.
Particularly, the jib erection work cycle of large-scale floating crane is long, efficiency is low, person property's power input amount is large, cost is high, and safety in production prevention difficulty is large.
In prior art, crane barge install and maintenance construction operating process in, usual employing barge carries out auxiliary installation, with utilize barge in the seawater with crane barge ship synchronous swing and rocking, reduce as far as possible or reduce crane barge ship and rock separately the caused inertia impact to jib, and then cause jib structure, the particularly damage of transmission position.This, there is many problem and shortage in Attention problems mode of operation.Be mainly manifested in:
The tonnage of crane barge ship is generally far above the tonnage of barge, there is the factors such as bigger difference in amplitude of fluctuation therebetween caused by periodic the tide is flowing and ebbing and passive motion frequency, mode of motion, cause the control difficulty of this marine operation high, be limited by climatic conditions completely, cannot all weather operations be realized;
And because the jib installation work amount of large-scale floating crane is huge, cycle of operations is generally 2 ~ 3 months, auxiliary installation barge was with crane barge ship in stormy waves and corrosive environment floating 2-3 month, and it costly;
What is more important, this auxiliary installation equipment self be in all the time under instability or the steady state that is situated between, cannot, according to fitting operation needs, carry out rationally, flexibly regulating; In some cases, even also may aggravate fitting operation difficulty, bring out industrial accident; Particularly, for relying on, mode is manually carried out, quantities is huge, and be similar to steel rope and wear consecutive and connect the high-altitude construction operation be in all the time under heave and set, unsteadiness and strong wind atmosphere, security risk factor is very high.
How to develop the jib being suitable for practical large-scale floating crane and appurtenance is installed, to improve the mode of operation that existing large-scale floating crane jib is installed, become the target of those skilled in the art's Continual Improvement and innovation.
Utility model content
The purpose of this utility model is, there is provided that a kind of structure is simple, stability of equilibrium good, can follow crane barge seel or jigging motion in good time, the synchronous compliant bracing frame automatically regulated, be transferred to land with the quantity installed by large-scale floating crane jib by marine operation to carry out, significantly reduce fitting operation difficulty, reduce to install to assist and drop into mechanized equipment, shorten installation period, reduce cost of installation, and be suitable for all weather operations.
The technical scheme that the utility model is adopted for achieving the above object is, a kind of compliant bracing frame, is characterized in that, is arranged on harbour bank, by order from top to bottom, comprises joist, spherical hinge device, support beam, bracing frame body and base successively; Wherein,
Support frame as described above body is truss structure, and quantity is two, left and right each, and its top is fixedly connected with integral by tie-beam;
The upper surface of described joist is for supporting the head of described large-scale floating crane jib, and its lower surface is connected with described support beam by described spherical hinge device;
Described spherical hinge device comprises a hemisphere and a spherical groove seat, and described hemisphere is fixedly connected with the lower surface of described joist, and described hemisphere is placed in spherical groove seat, and the bottom of described spherical groove seat is fixed by welding on described support beam;
Described base is split-type structural, comprises upper bed-plate and the lower bottom base of stacked placement, and wherein, lower bottom base is arranged in the ground base on harbour bank, and upper bed-plate is placed on lower bottom base, between upper bed-plate and lower bottom base, be also provided with planar slip layer.
The technique effect that technique scheme is directly brought is; the compliant bracing frame of technique scheme; its structure is simple, stability of equilibrium good, can follow crane barge seel or jigging motion regulates in good time, synchronously automatically; thus effectively jib is passed over wave application force and front and back push-pull effort; carry out reasonable digestion, preferably shield arm shelf structure and connection hinge thereof.
Detailed explanation is described as follows:
The compliant bracing frame of technique scheme, the pressure that joist that its spherical hinge device can support transmits, and can guarantee that joist can rotate along any direction, to adapt to lateral oscillation that jib produces with ship motion and to teeter; Base is split-type structural, and its upper bed-plate is stacked to be placed on lower bottom base, and centre is provided with planar slip layer.This version makes the Relative sliding motion can carried out between its upper bed-plate and lower bottom base on horizontal surface.That is, base can allow whole compliant bracing frame can realize under external force carrying out X along in-plane, the appropriate slip in Y direction; Upper bed-plate and lower bottom base concentrated force of being responsible for support frame structure transmission to get off is divided into planar forces, and the planar slip layer between upper and lower base can along the horizontal plane direction be free to slide to a certain extent.
The compliant bracing frame of technique scheme, its support frame structure body is made up of steel pipe, and version is truss structure, and top is provided with tie-beam.Like this, the pressure uniform that support beam passes over can be distributed on truss arm, then be transferred the pressure on the upper bed-plate of base by truss arm.
Be not difficult to find out, the compliant bracing frame of technique scheme, when jib is with crane barge ship motion, by pass over straight down simultaneously pressure, wigwag motion power and front and back push-pull effort, three kinds of power are delivered to spherical hinge device by joist, wherein, nosing force relatively rotating by spherical hinge device consume; Front and back push-pull effort and vertical pressure, be passed to support frame structure by support beam, be passed to base; Wherein before and after push-pull effort by between the Up/down base of base Relative sliding motion consume, finally only have vertical pressure to be delivered on the ground of harbour by lower bottom base.
Be preferably, in above-mentioned spherical groove seat, be added with lubricant.
The technique effect that this optimal technical scheme is directly brought is, adds appropriate lubricant between spherical groove seat and hemisphere, is conducive to reducing friction coefficient, and prevents from damaging because of excessive friction between spherical groove seat and hemisphere.
Further preferably, above-mentioned planar slip layer is graphite composite powder layer or polyfluortetraethylene plate.
The technique effect that this optimal technical scheme is directly brought is, friction coefficient between polyfluortetraethylene plate and surface of steel plate is minimum, and (surface of steel plate is under certain degree of finish, friction coefficient can reach less than 0.08, conventionally in major design part slippage engineering slide medium, with conventional grease slippage to compare with ball slippage polyfluortetraethylene plate have resistance to wear, reliability is high, cost is low, make simple advantage;
And the friction coefficient of graphite composite powder layer is less, cost is low, laying is convenient, and lubrication protection better effects if; But adopt graphite composite powder layer, comparatively speaking, the requirement for the degree of finish of Up/down base abutment surface is slightly higher, and this will cause the rising of the tooling cost of Up/down base.
Further preferably, above-mentioned lubricant is molybdenum disulphide lithium grease.
The technique effect that this optimal technical scheme is directly brought is, lubricant selects molybdenum disulphide lithium grease, and one is that its lubricity is good, weather resisting property, frost resistance are good, melting point is higher; Two are, cost is not high.
In fact, the lubricant of other kinds can also be selected, except needing, selection principle considers that lubricant has except good lubricity, mechanical safety, waterproof property and oxidation stability, the lubricant that also should be noted that is necessary for paste body shape, and lubricant applicable working temperature is wider.This is mainly such as, because the temperature difference of concrete applying working condition is large, sea wind large, and the paste body shape grease that melting point is higher, just can avoid too early liquefaction, be blown off by sea wind.
Further preferably, the left and right sides of above-mentioned support beam upper surface is also respectively arranged with protection bearing beam.
The technique effect that this optimal technical scheme is directly brought is, neonychium beam effect is that the oscillating motion of protection jib is carried out in certain safe range, avoids causing Peril Incident because excessively waving.
Further preferably, above-mentioned support beam quantity is two, is arranged side by side.
The technique effect that this optimal technical scheme is directly brought is, structure is more stable, firm, and balance is better.
Further preferably, above-mentioned hemispheroidal material is 42CrM, and its sphere hardness is HRC45 ~ 55.
The technique effect that this optimal technical scheme is directly brought is, hemisphere uses 42CrMo material to make through forging, machinework, Surface heat-treatent, sphere hardness reaches HRC45 ~ 55, there is strong, the anti abrasive feature of load-carrying capacity, (ball groove seat, by forging processing and fabricating, can bear the pressure that hemisphere transmission comes fully can to meet user demand.Through modeling Analysis, above-mentioned spherical hinge device can bear all directions load of more than 750t), and there is good service life.
For understanding the utility model better, below introduce in detail the method adopting this compliant bracing frame to carry out the installation of large-scale floating crane jib.
Adopt above-mentioned compliant bracing frame to carry out the method for large-scale floating crane jib installation, it comprises the following steps:
The first step, step raised by large-scale floating crane jib:
Crane barge ship is berthed, is positioned at harbour, now, between the stem of crane barge ship and the forward position of harbour, keeps the safety distance of 8 ~ 10m;
Gauntry crane is hung three groups of suspension hooks in row's group, to be connected with large-scale floating crane jib respectively by Current Collector Sleave and to put in place;
Start gauntry crane by large-scale floating crane jib Integral lifting, and hang to move to and corresponding with crane barge ship wear shaft position, and the head of large-scale floating crane jib is placed on the joist of compliant support jig; Meanwhile, use some supplemental support moulding beds, even support is between the middle part and afterbody of large-scale floating crane jib;
Then, remove the Current Collector Sleave on three groups of suspension hooks, and the olecranon portion of large-scale floating crane jib head is in place;
Second step, axle step worn by large-scale floating crane jib:
Select the slack tide stage, gauntry crane is hung three groups of suspension hooks in row's group, to be connected with the afterbody of large-scale floating crane jib respectively by Current Collector Sleave and to put in place;
Start gauntry crane, after large-scale floating crane jib afterbody lifting 300mm, remove supplemental support moulding bed;
The slow off the hook of manipulation gauntry crane, and adjust Attitude with the anchor winch on crane barge ship by hawser, so that position alignment is carried out in the hinge hole on the afterbody of large-scale floating crane jib and hull hinge bearing;
After position alignment, undertaken wearing axle by wearing axle frock;
After wearing axle, gauntry crane pine hook, then, removes the Current Collector Sleave on three groups of suspension hooks;
3rd step, large-scale floating crane jib head draws high step:
First carry out the steel cable winding system wire rope handling of crane barge ship;
After wire rope handling, gauntry crane is hung three groups of suspension hooks in row's group, to be connected with the head of large-scale floating crane jib respectively by Current Collector Sleave and to put in place;
Start gauntry crane and be wound around with the use of the changing-breadth system of crane barge and tighten up variable-amplitude steel wire rope, large-scale floating crane jib head is slowly promoted within design change angle scope.
The technique effect that technique scheme is directly brought is, adopts compliant moulding bed to be supported on jib lower head, with the auxiliary installation carrying out large-scale floating crane jib, can ensure to wear in axle process, and the angle of inclination of jib consistently; And, because the head of jib is held in place on the compliant moulding bed on harbour ground, make the head of jib relatively stable, there will not be large waving and rocking, significantly reduce in hoisting process the difficulty of looking for a contraposition.
Namely, compliant moulding bed is adopted to carry out the installation of large-scale floating crane jib, this mounting means quantity of fitting operation being transferred to the gantry crane lifting of land by the lifting of traditional seagoing barge, significantly reduce fitting operation difficulty, improve installation effectiveness, shorten installation period, and significantly improve the safety in install operation process.
Understanding the utility model for further helping, now briefly introducing its applying working condition and technical characterstic:
Crane barge installation process is: after the installation of jib hinge point shaft, jib needs to carry out Wirerope reeving winding work and pulley erection work with the holding state that lies low, this process is for being generally 2 ~ 3 months, crane barge hull swims in sea for a long time and is subject to the impact of ocean tide and ocean undercurrent and carries out continual horizontal double swerve and move forward and backward, and jib structure will be caused to follow hull and move.In crane barge maintenance process, crane barge hoists and the replacing of changing-breadth system steel rope and pulley, similar with installing condition.
After the installation of large-scale floating crane jib, crane barge ship and jib structure join together.Now, jib afterbody is connected with hull by bearing pin, and by hull support, jib head is placed on the joist on the top of compliant bracing frame, is supported by bracing frame; Install or the maintenance period at crane barge steel rope and pulley winding system, hull acts on lower drive jib of exerting oneself and makes various trace movement in ocean.
In sum, the utility model, relative to prior art, has following beneficial effect:
1, compliant bracing frame of the present utility model, can in the out-of-action situation of luffing range of cantilever support steel rope, the jib of crane barge is carried out to safety is firm, pulsation-free supports;
And in the installation of jib or maintenance process, jib does not relate to harbour bank backbone;
Simultaneously; compliant bracing frame can carry out being obedient to trace movement with the motion of jib and hull; effective buffering, decay or digest and assimilate the impact effect of ocean to hull and jib structure, thus each component of available protecting jib can not because impacting caused damage or damage.
2, adopt compliant bracing frame of the present utility model, the crane barge that can change prior art is installed and maintenance construction mode, makes crane barge installation and maintenance can pull in shore to carry out, and need not assist, be suitable for all weather operations at lease barge;
Further, because main installation work amount is carried out all on land, its installation, maintenance, more convenient the accessory equipments such as crane are supporting, fitting operation is easier, safer, and the task difficulty installed and keep in repair and construction cost significantly reduce.
3, compliant bracing frame of the present utility model, coordinates large-sized gantry hoist to combinationally use, and can be widely used in installation and the maintenance of large-scale floating crane equipment.
Accompanying drawing explanation
Fig. 1 is main TV structure schematic diagram of the present utility model;
Fig. 2 is side-looking structural representation of the present utility model;
Fig. 3 is the structural representation of spherical hinge device of the present utility model;
Fig. 4 is the structural representation of base of the present utility model;
Fig. 5 is principle of work structural representation of the present utility model;
Fig. 6-Fig. 8 is installation procedure schematic diagram of the present utility model.
Description of reference numerals: 1, spherical hinge device, 2, supporting construction, 3, joist, 4, protection bearing beam; 5, support beam, 6, base, 7, hemisphere, 8, lubricant; 9, ball groove seat, 10, upper bed-plate, 11, slipping block, 12, lower bottom base; 100, harbour, 101, crane barge ship 102, large-scale floating crane jib afterbody, 103, the head of large-scale floating crane jib; 104, compliant bracing frame, 105, steel rope, 106, the row's of hanging group; 107, Current Collector Sleave, 108, olecranon portion, 109, supplemental support moulding bed.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in detail.
As shown in Figure 1, Figure 2, Figure 5, compliant bracing frame of the present utility model, is characterized in that, is arranged on the ground of harbour 100, by order from top to bottom, comprises joist 3, spherical hinge device 1, support beam 5, bracing frame body 2 and base 6 successively; Wherein,
Above-mentioned bracing frame body 2 is truss structure, and quantity is two, left and right each, and its top is fixedly connected with integral by tie-beam 5;
As shown in Figure 1, Figure 3, above-mentioned spherical hinge device 1 comprises hemisphere 7 and spherical groove seat 9, and wherein, hemisphere is placed in spherical groove seat, and the bottom welding of spherical groove seat is on above-mentioned support beam 5;
The upper surface of above-mentioned joist 3 is for supporting the head of above-mentioned large-scale floating crane jib, and its lower surface is fixedly connected with above-mentioned hemisphere 7;
As shown in Figure 4, above-mentioned base is split-type structural, comprises upper bed-plate 10 and the lower bottom base 12 of stacked placement, wherein, lower bottom base is arranged in the ground base on harbour bank, and upper bed-plate is placed on lower bottom base, between upper bed-plate and lower bottom base, be also provided with planar slip layer 11.
As shown in Figure 3, lubricant 8 is added with in above-mentioned spherical groove seat.
Above-mentioned lubricant is molybdenum disulphide lithium grease.
Above-mentioned planar slip layer is graphite composite powder layer or polyfluortetraethylene plate.
The left and right sides of above-mentioned support beam upper surface is also respectively arranged with protection bearing beam 4.
Above-mentioned support beam quantity is two, is arranged side by side.
Above-mentioned hemispheroidal material is 42CrM, and its sphere hardness is HRC45 ~ 55.
Fig. 5 is principle of work structural representation of the present utility model, as shown in Figure 5, crane barge ship 101 is docked on the sea of harbour 100, the afterbody 102 of large-scale floating crane jib is connected with hull by bearing pin, by hull support, the head 103 of jib is placed on the joist on the top of compliant bracing frame 104, is supported by bracing frame; Be connected by steel rope 105 between the afterbody 102 of large-scale floating crane jib and the head 103 of large-scale floating crane jib.
As shown in Figure 6 to 8, adopt above-mentioned compliant bracing frame to carry out the method for large-scale floating crane jib installation, it comprises the following steps:
The first step, step raised by large-scale floating crane jib:
Crane barge ship 101 is berthed, is positioned at harbour 100, now, between the stem of crane barge ship and the forward position of harbour, keep the safety distance of 8 ~ 10m;
Gauntry crane is hung row and organize three groups of suspension hooks on 106, to be connected with large-scale floating crane jib respectively by Current Collector Sleave 107 and to put in place;
Start gauntry crane by large-scale floating crane jib Integral lifting, and hang to move to and corresponding with crane barge ship wear shaft position, and the head of large-scale floating crane jib is placed on the joist of compliant support jig 104; Meanwhile, use some supplemental support moulding beds 109, even support is between the middle part and afterbody of large-scale floating crane jib;
Then, remove the Current Collector Sleave on three groups of suspension hooks, and the olecranon portion 108 of large-scale floating crane jib head is in place;
Second step, axle step worn by large-scale floating crane jib:
Select the slack tide stage, gauntry crane is hung three groups of suspension hooks in row's group, to be connected with the afterbody of large-scale floating crane jib respectively by Current Collector Sleave and to put in place;
Start gauntry crane, after large-scale floating crane jib afterbody lifting 300mm, remove supplemental support moulding bed;
The slow off the hook of manipulation gauntry crane, and adjust Attitude with the anchor winch on crane barge ship by hawser, so that position alignment is carried out in the hinge hole on the afterbody of large-scale floating crane jib and hull hinge bearing;
After position alignment, undertaken wearing axle by wearing axle frock;
After wearing axle, gauntry crane pine hook, then, removes the Current Collector Sleave on three groups of suspension hooks;
3rd step, large-scale floating crane jib head draws high step:
First carry out the steel cable winding system wire rope handling of crane barge ship;
After wire rope handling, gauntry crane is hung three groups of suspension hooks in row's group, to be connected with the head of large-scale floating crane jib respectively by Current Collector Sleave and to put in place;
Start gauntry crane and be wound around with the use of the changing-breadth system of crane barge and tighten up variable-amplitude steel wire rope, large-scale floating crane jib head is slowly promoted within design change angle scope.
Illustrate: compliant bracing frame of the present utility model carries out the method for large-scale floating crane jib installation, be applicable to large-scale floating crane jib installation (weight of its large-scale floating crane jib is 800t ~ 1500t) that hoisting capacity is the large-scale floating crane of 2000t ~ 4000t; In the utility model installation process, the hoisting capacity of the gauntry crane used is more than 1000t, lifting altitude is greater than 70m, and the distance between the center position of the suspension hook of gauntry crane and harbour bank is within 40m.
Claims (7)
1. a compliant bracing frame, is characterized in that, is arranged on harbour bank, and install or maintenance for large-scale floating crane jib, by order from top to bottom, it comprises joist, spherical hinge device, support beam, bracing frame body and base successively; Wherein,
Support frame as described above body is truss structure, and quantity is two, left and right each, and its top is fixedly connected with integral by tie-beam;
The upper surface of described joist is for supporting the head of described large-scale floating crane jib, and its lower surface is connected with described support beam by described spherical hinge device;
Described spherical hinge device comprises a hemisphere and a spherical groove seat, and described hemisphere is fixedly connected with the lower surface of described joist, and described hemisphere is placed in spherical groove seat, and the bottom of described spherical groove seat is fixed by welding on described support beam;
Described base is split-type structural, comprises upper bed-plate and the lower bottom base of stacked placement, and wherein, lower bottom base is arranged in the ground base on harbour bank, and upper bed-plate is placed on lower bottom base, between upper bed-plate and lower bottom base, be also provided with planar slip layer.
2. compliant bracing frame according to claim 1, is characterized in that, is added with lubricant in described spherical groove seat.
3. compliant bracing frame according to claim 2, is characterized in that, described lubricant is molybdenum disulphide lithium grease.
4. compliant bracing frame according to claim 1, is characterized in that, described planar slip layer is graphite composite powder layer or polyfluortetraethylene plate.
5., according to the arbitrary described compliant bracing frame of claim 1-4, it is characterized in that, the left and right sides of described support beam upper surface is also respectively arranged with protection bearing beam.
6., according to the arbitrary described compliant bracing frame of claim 1-4, it is characterized in that, described support beam quantity is two, is arranged side by side.
7., according to the arbitrary described compliant bracing frame of claim 1-4, it is characterized in that, described hemispheroidal material is 42CrM, and its sphere hardness is HRC45 ~ 55.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104828713A (en) * | 2015-05-13 | 2015-08-12 | 青岛海西重机有限责任公司 | Compliant support frame and installation method of compliant support frame to large floating crane boom |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104828713A (en) * | 2015-05-13 | 2015-08-12 | 青岛海西重机有限责任公司 | Compliant support frame and installation method of compliant support frame to large floating crane boom |
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