CN103935907B - A kind of crawler crane - Google Patents
A kind of crawler crane Download PDFInfo
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- CN103935907B CN103935907B CN201410201601.9A CN201410201601A CN103935907B CN 103935907 B CN103935907 B CN 103935907B CN 201410201601 A CN201410201601 A CN 201410201601A CN 103935907 B CN103935907 B CN 103935907B
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- shelf
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- arm
- pull bar
- steel wire
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Abstract
The present invention provides a kind of crawler crane, use relatively simple structure achieve man-like shelf from cocked, simple to operate, low cost.Described crawler crane includes getting off and be arranged on the man-like shelf on getting off and coxopodite arm, connected by variable-amplitude steel wire rope drag-line between described man-like shelf and coxopodite arm, also include at least one pull bar, the two ends of described pull bar respectively with described coxopodite arm and get off hinged, in order to described in get off be described man-like shelf by described pull bar and coxopodite arm offer moment of rising and falling.Coxopodite arm is connected by pull bar with getting off, then getting off passes sequentially through pull bar, coxopodite arm and variable-amplitude steel wire rope drag-line and provide actively moment to man-like shelf, realizes the most cocked of man-like shelf with auxiliary；When needing let-down man-like shelf, get off and coxopodite arm be man-like shelf whereabouts provide trimming moment, prevent from causing man-like shelf to fall because moment is unbalance.Present configuration is simple, and cost is relatively low, and operating process is simple, improves the stability that man-like shelf rises and falls.
Description
Technical field
The present invention relates to crane technical field, particularly relate to a kind of crawler crane.
Background technology
Refer to Fig. 1 and Fig. 2, Fig. 1 is that in prior art, crawler crane is specifically real in one
Execute the side structure schematic diagram in mode；Fig. 2 is man-like shelf folding in crawler crane shown in Fig. 1
The side structure schematic diagram of poststack.
In prior art, crawler crane mainly by getting off 1 ', the revolution of turntable 2 ', lifting amplitude-change
Mechanism 3 ', counterweight 4 ', man-like shelf 5 ', variable-amplitude steel wire rope drag-line 6 ' and jib 7 ' composition.Due to
Road transport weight and the restriction of size, for the transport of little tonnage caterpiller crane host machine part,
Typically require and fall down to place by man-like shelf when transport, carry coxopodite arm simultaneously and carry out integration fortune
Defeated, as shown in Figure 2.Volume and weight in view of man-like shelf is relatively big, how to make man-like shelf
Operation of rising and falling more simply becomes those skilled in the art and needs badly and solve the technical problem that.
In current crawler crane, generally use hydraulic jack, secondary weight and auxiliary hanging
The modes such as dress realize rising and falling of man-like shelf.
Please further refer to Fig. 3-5, Fig. 3 is realize in prior art that man-like shelf rises and falls first
The structural representation of the scheme of kind；Fig. 4 is to realize, in prior art, the second side that man-like shelf rises and falls
The structural representation of case；Fig. 5 is to realize the third scheme that man-like shelf rises and falls in prior art
Structural representation.
In the first scheme, the turntable of crane is provided with hydraulic jack 8 ', by this liquid
The telescopic drive man-like shelf of compressing cylinder 8 ' swings, to realize rising and falling of man-like shelf, as shown in Figure 3.
In first scheme, the end of jib is provided with lengthening jib 9 ' or other secondary weight,
As shown in Figure 4.When needs rise man-like shelf, variable-amplitude steel wire rope drag-line 6 ' tightens up steel wire rope,
The offer rotating torque that hoists that lengthening jib 9 ' and coxopodite arm are man-like shelf so that man-like shelf is suitable
Hour hands turn to the position that hoists；When needs let-down man-like shelf, variable-amplitude steel wire rope drag-line 6 ' loosens
Steel wire rope, man-like shelf falls downwards under himself action of gravity, in order to man-like shelf overlapping is placed
To getting off on 1 '.
In the third scheme, in man-like shelf, the hinged end of two connecting rods is provided with suspension hook 10 ', in order to
Being sling the top of man-like shelf by auxiliary vehicle, auxiliary realizes hoisting of man-like shelf, such as Fig. 5 institute
Show.
But, all there is certain drawback in above-mentioned three kinds of schemes:
In the first scheme, on the one hand, need the hydraulic jack 8 ' newly increased is carried out individually
Design and manufacture, add cost；On the other hand, need by hydraulic pressure pump valve hydraulic oil
Cylinder 8 ' is driven, thus the more complexity of hydraulic system；Furthermore, turntable is arranged
Hydraulic jack 8 ' has tied up the space of other parts so that the space layout on turntable is the most multiple
Miscellaneous, it is not easy to maintenance.
In first scheme, owing to coxopodite arm is not enough to produce enough moment to drive herringbone
Erecting liter, therefore be provided with the auxiliary counterweight devices such as lengthening jib, these auxiliary counterweight devices need logical
Cross auxiliary vehicle to complete to assemble, add cost；Furthermore, in the scheme using secondary weight,
The arm of force provided due to variable-amplitude steel wire rope drag-line 6 ' is less, then the drag-line power that it bears is relatively large,
Its carrying scope may be exceeded or need the section structural of variable-amplitude steel wire rope drag-line 6 ' is carried out
Reinforce；Certainly, in the case of the arm of force is less, required secondary weight is the biggest, enters one
Step adds the difficulty of its assembly and disassembly.
In the third scheme, every time the rising and falling of man-like shelf is required for extra auxiliary vehicle and carries out
Lifting, reduces the convenience of operation；Meanwhile, place be it is also proposed higher by auxiliary vehicle
Requirement, adds use cost.
Therefore, how to look for another way, a kind of crawler crane of design, use relatively simple knot
Structure realizes rising and falling of man-like shelf, is that those skilled in the art are presently required and solve the technical problem that.
Summary of the invention
It is an object of the invention to provide a kind of crawler crane, use relatively simple structure to realize
Man-like shelf from cocked, simple and convenient, reduce use cost.
For solving above-mentioned technical problem, the present invention provides a kind of crawler crane, including get off with
And it is arranged on the man-like shelf on getting off and coxopodite arm, by becoming between described man-like shelf and coxopodite arm
Width steel wire rope drag-line connect, also include at least one pull bar, the two ends of described pull bar respectively with institute
State coxopodite arm and get off hinged, in order to described in get off by described pull bar and coxopodite arm be described people
The offer moment of rising and falling of cabinet frame.
The crawler crane of the present invention is provided with pull bar, and coxopodite arm is connected by pull bar with getting off, coxopodite
Arm is connected with man-like shelf by variable-amplitude steel wire rope drag-line, then get off and pass sequentially through pull bar, coxopodite arm
There is provided actively moment with variable-amplitude steel wire rope drag-line to man-like shelf, realize the automatic of man-like shelf with auxiliary
Cocked；When needs let-down man-like shelf, loosen the steel wire rope of variable-amplitude steel wire rope drag-line, then herringbone
Frame falls after rise under the effect of self gravitation, now get off and coxopodite arm is that the whereabouts of man-like shelf carries
For trimming moment, prevent from causing man-like shelf to fall because moment is unbalance, it is to avoid crane is caused damage
Wound.The present invention, only at coxopodite arm and hinged pull bar between getting off, i.e. available gets off as man-like shelf
Rise and fall offer moment, with prior art in use hydraulic jack, secondary weight and auxiliary hanging
The mode of dress is compared, the simple in construction of the present invention, and the change to crane is less, and cost is relatively low,
And operating process is simple；Meanwhile, the present invention reasonably be make use of by pull bar and gets off,
Be capable of man-like shelf from cocked and let-down, and the deadweight owing to getting off is relatively big, carries further
The stability that high man-like shelf rises and falls.
Preferably, described pull bar is push-and-pull rod.
Pull bar could be arranged to push-and-pull rod, and its processing is relatively simple, and cost is relatively low.More attach most importance to
, push-and-pull rod can be supported on the lower section of coxopodite arm, during crane transports,
Push-and-pull rod can be that coxopodite arm provides support force so that jib keeps stable in transportation；
During man-like shelf is cocked, push-and-pull rod can be reliably connected with getting off, it is provided that man-like shelf
Cocked required actively moment；The active moment produced when the cocked certain angle of man-like shelf, jib is big
When moment produced by the gravity of man-like shelf, push-and-pull rod can be the whereabouts offer of jib
Support force square, prevents from causing jib to fall owing to moment is unbalance.
Preferably, in two hinged ends of described pull bar, at least one is detachable, enters at crane
During row lifting operation, one end of pull bar can be dismantled, and be directly placed at get off or
On coxopodite arm, improve the convenience of use.
Preferably, get off described in and there is some first installation positions hinged for described pull bar and/or institute
State coxopodite arm and there is some second installation positions hinged for described pull bar.
Some installation positions can be set at coxopodite arm and upper pull bar of getting off, it is simple to pull bar is according to people
The demand of rising and falling of cabinet frame selects different installation positions to be attached, to provide different size of moment,
Meet the demand of rising and falling of different people cabinet frame.
Preferably, also include carrying roller, during described man-like shelf rises and falls, described carrying roller to
The steel wire rope of variable-amplitude steel wire rope drag-line described in upper support.
Carrying roller can upwards support steel wire rope, due to steel wire rope two ends respectively with coxopodite arm and people
Cabinet frame connects, and when carrying roller upwards support steel wire rope, steel wire rope is relatively distant from man-like shelf and coxopodite
The hinge of arm, thus add the steel wire rope arm of force relative to two hinges, then at man-like shelf and the end
Joint arm is when respective hinge rotates, and the moment that steel wire rope is provided is improved.
Preferably, described man-like shelf includes the front bar hinged with respective top and rear bar, described
Carrying roller is arranged in described front bar, and upwardly extends the vertical of described front bar, in order to upwards hold
Ask described steel wire rope away from described front bar preset distance.
Preferably, described in get off and be provided with turntable, the bottom of described front bar and rear bar is all hinged on
On described turntable, described carrying roller is arranged on the lower section of described front bar.
When carrying roller is arranged on the lower section of front bar, man-like shelf is cocked and rotating hinge during let-down for distance
Point more enters, it is possible to steel wire rope upwards holds up higher distance, to increase steel wire rope as far as possible
The arm of force.
Preferably, described carrying roller is arranged on 1/3 body of rod that described front bar is below.
Preferably, described coxopodite arm is hinged on described turntable, the moment that described pull bar is born
Calculated by below equation:
F5*L5=(G1*L1*L3)/L2-G4*L4,
Wherein, the power that F5 is born by described pull bar；
G1 is the gravity of described man-like shelf；
G4 is the gravity of described coxopodite arm；
L1 is the described man-like shelf arm of force relative to the pin joint of described front bar bottom；
L2 is that the steel wire rope on rear side of described variable-amplitude steel wire rope drag-line is relative to described front bar bottom
The arm of force of pin joint；
L3 is the hinge relative to described coxopodite arm of the steel wire rope on front side of described variable-amplitude steel wire rope drag-line
The arm of force of contact；
L4 is the described coxopodite arm arm of force relative to its pin joint；
L5 is the pull bar arm of force relative to the pin joint of described coxopodite arm.
Accompanying drawing explanation
Fig. 1 is crawler crane side structure in a kind of detailed description of the invention in prior art
Schematic diagram；
Fig. 2 is the side structure schematic diagram in crawler crane shown in Fig. 1 after man-like shelf folding；
Fig. 3 is the structural representation realizing the first scheme that man-like shelf rises and falls in prior art；
Fig. 4 is the structural representation realizing the first scheme that man-like shelf rises and falls in prior art；
Fig. 5 is the structural representation realizing the third scheme that man-like shelf rises and falls in prior art；
Fig. 6 is that the crawler crane provided by the present invention structure in a kind of detailed description of the invention is shown
It is intended to；
Fig. 7 is the partial structurtes schematic diagram of crawler crane lifting operation provided by the present invention；
Fig. 8 is the force analysis signal that the man-like shelf of crawler crane provided by the present invention rises and falls
Figure.
In Fig. 1-5:
1 ' get off, 2 ' turntables, 3 ' lifting amplitude-change slew gears, 4 ' counterweights, 5 ' man-like shelves
6 ' variable-amplitude steel wire rope drag-lines, 7 ' jibs, 8 ' hydraulic jacks, 9 ' lengthening jib, 10 ' suspension hooks
In Fig. 6-8:
1 get off, 11 first installation positions, 2 man-like shelves, 21 front bars, 22 rear bars, 3 coxopodite arms,
31 second installation positions, 4 variable-amplitude steel wire rope drag-lines, 5 pull bars, 6 carrying rollers, 7 turntables
Detailed description of the invention
The core of the present invention is to provide a kind of crawler crane, uses relatively simple structure to realize
Man-like shelf from cocked, simple and convenient, reduce use cost.
In order to make those skilled in the art be more fully understood that the present invention program, below in conjunction with the accompanying drawings
The present invention is described in further detail with detailed description of the invention.
Refer to Fig. 6, Fig. 6 is that crawler crane provided by the present invention is in a kind of specific embodiment party
Structural representation in formula.
The crawler crane of the present invention, including 1, man-like shelf 2, coxopodite arm 3 and the luffing of getting off
Steel wire rope drag-line 4, getting off 1 has crawler belt, for the transport of crane；Man-like shelf 2 and the end
Joint arm 3 is arranged at getting off on 1；Coxopodite arm 3 in crane arm with get off 1 be connected the
One joint arm, man-like shelf 2 is connected by the steel wire rope of variable-amplitude steel wire rope drag-line 4 with coxopodite arm 3；People
Cabinet frame 2 can provide auxiliary support force to jib, and the load on jib passes to get off 1.
The crawler crane of the present invention also includes pull bar 5, the two ends of pull bar 5 respectively with coxopodite arm
3 and get off 1 hinged, thus will get off and 1 be connected with coxopodite arm 3；When the cocked man-like shelf of needs 2
Time, the steel wire rope of variable-amplitude steel wire rope drag-line 4 tightens up, due to coxopodite arm 3 by pull bar 5 with under
Car 1 connects, then the deadweight of coxopodite arm 3, the tightening force of 1 pair of pull bar 5 of getting off and steel wire rope
Tensile force jointly for the cocked offer actively moment of man-like shelf 2 so that man-like shelf 2 is along Fig. 6
Direction shown in middle arrow rotates clockwise, and arrives dotted portion institute in cocked position, i.e. Fig. 6
The position shown；When needs let-down man-like shelf 2, loosen the steel wire rope of variable-amplitude steel wire rope drag-line 4,
Then the tensile force of the deadweight of coxopodite arm 3, the tightening force of 1 pair of pull bar 5 of getting off and steel wire rope is
The let-down of man-like shelf 2 provides trimming moment, in order to the inverse time produced by the deadweight with man-like shelf 2
Pin rotating torque balances each other so that man-like shelf 2 gradually let-down, as shown in bold portion in Fig. 6.
Owing to the deadweight of man-like shelf 2 is relatively big, the tensile force of steel wire rope and the deadweight of coxopodite arm 3 are not
Be enough to produce enough active moment it is cocked or balance moment produced by its gravity.This
Invention arranges pull bar 5 and is connected to coxopodite arm 3 and gets off between 1, then when variable-amplitude steel wire rope drag-line
During 4 tensioning steel wire rope, pull bar 5 by get off 1 constraint pull downward on coxopodite arm 3, namely
Say, get off 1 by pull bar 5 active moment needed for man-like shelf 2 provides it cocked.In like manner,
During man-like shelf 2 let-down, getting off 1 is man-like shelf 2 by pull bar 5, coxopodite arm 3
Let-down provide trimming moment, in order to stablize the state of man-like shelf 2, it is achieved man-like shelf 2 put down
Steady falling.
Further, it is possible to pull bar 5 is set to push-and-pull rod.Push-and-pull rod can use casting
The processes such as molding form, its simple in construction, and cost is relatively low；In crawler crane transport
During, the pull bar 5 of rigidity is connected to coxopodite arm 3 and gets off between 1, can be to coxopodite arm
3 provide auxiliary support force so that jib keeps stable in transportation；Pull at man-like shelf 2
During Qiing, coxopodite arm 3 can preferably be strained by the pull bar 5 of rigidity, for man-like shelf 2
The active moment of cocked offer continuous and effective；When the cocked certain angle of man-like shelf 2, coxopodite arm 3
Produced actively moment more than produced by the gravity of man-like shelf 2 during moment, coxopodite arm 3 meeting
Producing the movement tendency dropped down, now, the pull bar 5 of rigidity can assist support coxopodite arm
3, prevent from causing jib to fall owing to moment is unbalance；During man-like shelf 2 let-down, rigidity
Pull bar 5 can be that coxopodite arm 3 provides reliable tightening force, prevent the gravity institute of man-like shelf 2
The moment produced is excessive and damages coxopodite arm 3, it is achieved the stable falling of man-like shelf 2.
Jib specifically described herein include coxopodite arm 3 and be nested in coxopodite arm 3 flexible
Arm, but owing to crawler crane walking process only carrying coxopodite arm 3, therefore realizing man-like shelf 2
During rising and falling, described jib i.e. coxopodite arm 3.
It is crawler crane lifting operation provided by the present invention please further refer to Fig. 7, Fig. 7
Partial structurtes schematic diagram.
In two hinged ends of pull bar 5 at least one could be arranged to removably connect, such as,
Pull bar 5 with get off 1 hinged end can be to removably connect, then crane carry out lifting make
During industry, pull bar 5 and the connection getting off between 1 can be removed so that pull bar 5 is hung at coxopodite
On arm 3, as shown in Figure 7.Or, the hinged end of pull bar 5 with coxopodite arm 3 can be arranged
For removably connecting, complete to rise and fall at man-like shelf 2, crane normal operation time, remove pull bar
5 hinged with coxopodite arm 3, hang pull bar 5 and are getting off on 1.Can also be by pull bar 5
Two hinged ends are disposed as removably connecting, when need not man-like shelf 2 is risen and fallen,
Pull bar 5 is directly dismantled from crane, installs again when needing.
When pull bar 5 uses push-and-pull rod, can be set to removably connect by its hinged end,
According to demand pull bar 5 to be dismantled and releasing the connection got off between 1 and coxopodite arm 3, keep away
Exempt to affect the normal operation of crane because pull bar 5 limits coxopodite arm 3.On the other hand, permissible
Dismounting pull bar 5 as required, to adapt to the several work demand of crane.
It addition, the present invention can arrange some pull bars 5, can be one, two or more,
To realize getting off 1 with being reliably connected of coxopodite arm 3；If it is it is to say, specifically described herein
Dry is that exponential quantity is uncertain, not refers in particular to quantity more.
It will be understood by those skilled in the art that when arranging two or more pull bars 5,
The connection between 1 and coxopodite arm 3 of getting off is the most reliable, and junction point can be kept away with relative distribution
Exempting from single-point connection causes stress to concentrate.
Some first installation positions 11 hinged for pull bar 5, pull bar can also be set getting off on 1
5 can select to be connected with wherein certain first installation position 11, to change the power that pull bar 5 is born
The arm of force with producing, thus changes the moment that pull bar 5 is provided by man-like shelf 2.
In like manner, coxopodite arm 3 can arrange some second installation positions 31 hinged for pull bar 5, with
Just pull bar 5 selects to be connected with wherein certain second installation position 31.
When pull bar 5 selects the first different installation positions 11 and the second installation position 31, pull bar 5
Installation site change, then its moment being provided man-like shelf 2 changes the most accordingly；
It is to say, the link position of pull bar 5 can be converted, to adapt to rising and falling of different people cabinet frame 2
Demand.
The number of described first installation position 11 and the second installation position 31 can not wait, and pull bar 5 can
With according to the first installation position 11 and position relative set of the second installation position 31, i.e. first installs
Position 11 and the second installation position 31 can in any combination, to realize the installation of pull bar 5；Certainly,
The number of the first installation position 11 and the second installation position 31 can be equal, and both can be correspondingly arranged,
All there is the second installation position 31 of a corresponding setting in certain first installation position 11 i.e., and
A corresponding set pull bar 5 can be arranged on this first installation position 11 and the second installation position 31
Between；Or, the number of the first installation position 11 and the second installation position 31 can be with pull bar 5
Number is equal, and the most each pull bar 5 all exists the installation position of corresponding setting.
It should be noted that the first and second sequencers such as grade specifically described herein are only for distinguishing not
Same structure, does not represent certain specific order.
On the basis of the above, the present invention can also include carrying roller 6, in the mistake that man-like shelf 2 rises and falls
Cheng Zhong, carrying roller 6 can the steel wire rope of upwards support variable-amplitude steel wire rope drag-line 4.Due to man-like shelf
2 and coxopodite arm 3 all 1 be connected with getting off with its bottom, and the steel wire of variable-amplitude steel wire rope drag-line 4
Restrict and the top of man-like shelf 2 and coxopodite arm 3 connected, old friend's cabinet frame 2 with get off 1 pin joint,
Coxopodite arm 3 with get off 1 pin joint be in the lower section of steel wire rope；Rise and fall at man-like shelf 2
During, carrying roller 6 upwards support steel wire rope substantially makes steel wire rope away from each pin joint, enters
And add the tightening force arm of force relative to each pin joint of steel wire rope, in the tension of steel wire rope
In the case of power is certain, can be the moment that the cocked of man-like shelf 2 is bigger with let-down offer, from
And reduce and the deadweight of coxopodite arm 3 and 1 moment provided of getting off are provided.
Specifically, man-like shelf 2 can include front bar 21 and rear bar 22, front bar 21 and rear bar
22 is hinged with respective top, and carrying roller 6 can be arranged in front bar 21, and in front bar 21
Vertical upwardly extend, thus during man-like shelf 2 rises and falls, upwards support steel wire rope so that
Steel wire rope is away from front bar 21 preset distance.
The vertical direction referring to be substantially perpendicular to the body of rod of front bar 21 of described front bar 21, i.e.
Substantially perpendicular with front bar 21；Described carrying roller 6 refers to torr along vertical the upwardly extending of front bar 21
Roller 6 is perpendicular to front bar 21 and extends upward, thus by steel wire rope upwards support so that steel
Cord is away from front bar 21 preset distance, and described preset distance refers to that steel wire rope is higher than front bar 21
Highly, described height refers to the distance on front bar 21 is vertical.
Before and after specifically described herein, the upper inferior noun of locality with crawler crane normal operating condition be
Reference, described fore-and-aft direction refers to be parallel to the direction of crawler crane direction of travel, described row
It is front for walking the direction pointed by direction, after the direction opposing with direction of travel is；Described upper and lower
To i.e. vertical direction, under the direction on sensing ground is, the direction away from ground is upper.
Described front bar 21 refers to the connecting rod near front, and rear bar 22 refers to be hinged on front bar 21
The connecting rod of rear side, front bar 21 and rear bar 22 are hinged to one with its top, collectively form herringbone
Frame 2.When man-like shelf 2 let-down, front bar 21 and rear bar 22 all rotate backward, now before
Bar 21 is in the top of rear bar 22, as shown in Figure 6；It is as noted previously, as man-like shelf 2
Pin joint is below, and now can be arranged in front bar 21 by carrying roller 6, so that carrying roller
6 support steel wire ropes effectively so that steel wire rope as much as possible away from the pin joint of man-like shelf 2,
And then increase the arm of force of steel wire rope.
Further, get off and turntable 7 can be set on 1, then by front bar 21 and rear bar 22
Bottom is all hinged on turntable 7, and carrying roller 6 is arranged on the lower section of front bar 21.Coxopodite arm 3
Can also be hinged on turntable 7, in order to according to the demand rotating table 7 of lifting operation, change
Man-like shelf 2 and the operating configurations of coxopodite arm 3.
The lower section of described front bar 21 refers to the direction near front bar 21 with turntable 7 pin joint.When
When carrying roller 6 is arranged on the lower section of front bar 21, carrying roller 6 is closer to the hinge of front bar 21 with turntable
Contact, then in the case of the length of carrying roller 6 is certain, it is possible to steel wire rope is the most remote
From the pin joint of front bar 21, to be effectively increased the arm of force of steel wire rope.
Further, carrying roller 6 can be arranged on 1/3 body of rod that front bar 21 is below；Can
So that the length direction of front bar 21 is from top to bottom divided into 3 parts, carrying roller 6 is set at
In 1/3 region of lower section, the distance of pin joint below carrying roller 6 and front bar 21 is limited to necessarily
In the range of, thus control steel wire rope relative to the torque arm length of pin joint below front bar 21.
Incorporated by reference to being subject to that the man-like shelf that Fig. 8, Fig. 8 are crawler crane provided by the present invention rises and falls
Power analyzes schematic diagram.
Definition front bar 21 is O with the pin joint of turntable 7, coxopodite arm 3 and the pin joint of turntable 7
Position P, then the moment that pull bar 5 is born can be calculated by below equation:
F5*L5=(G1*L1*L3)/L2-G4*L4,
Wherein, the power that F5 is born by described pull bar 5；
G1 is the gravity of described man-like shelf 2；
G4 is the gravity of described coxopodite arm 3；
L1 is the described man-like shelf 2 arm of force relative to pin joint O；
L2 is the power relative to pin joint O of the steel wire rope on rear side of described variable-amplitude steel wire rope drag-line 4
Arm；
L3 is the power relative to pin joint P of the steel wire rope on front side of described variable-amplitude steel wire rope drag-line 4
Arm；
L4 is the described coxopodite arm 3 arm of force relative to its pin joint P；
L5 is the pull bar 5 arm of force relative to the pin joint P of described coxopodite arm 3.
Specifically, man-like shelf 2 can be reduced to rotate around pin joint O and P from cocked process,
Respectively there is a balance system in two pin joints.
Relative pin joint O is produced for pin joint O, the gravity G1 of man-like shelf 2 turn counterclockwise
Dynamic rotating torque, variable-amplitude steel wire rope drag-line 4 is in the tensile force F2 that the steel wire rope of rear side provides
Producing the rotating torque that relative pin joint O rotates clockwise, the two moment keeps balance, i.e.
G1*L1=F2*L2；
Pin joint P, the gravity G4 of coxopodite arm 3 are produced and rotated clockwise around pin joint P
Rotating torque, the pulling force F5 of pull bar 5 produces the rotatory force rotated clockwise around pin joint P
Square, variable-amplitude steel wire rope drag-line 4 is in the tensile force F3 of the steel wire rope of front side and produces around pin joint P
The rotating torque rotated counterclockwise, these three moment keeps balance, i.e. G4*L4+
F5*L5=F3*L3；
According to the flexible body properties of steel wire rope, F2=F3, therefore can draw
G1*L1/L2=(G4*L4+F5*L5)/L3, arranges further and can draw what pull bar 5 was born
Moment, i.e. F5*L5=(G1*L1*L3)/L2-G4*L4, in order to the structure to pull bar 5 according to this
It is designed with intensity etc..
It will be understood by those skilled in the art that on the process nature of man-like shelf 2 let-down and be also
The process of one equalising torque is identical from cocked process with above-mentioned man-like shelf 2.
It addition, carrying roller 6 the arm of force L2 mainly affecting F2 is set, therefore can be according to above-mentioned public affairs
Carrying roller 6 and associated structural component thereof are configured by formula G1*L1=F2*L2, to realize pin joint O
Balance.
Also, it should be noted during man-like shelf 2 rises and falls, the arm of force L1, L2 and L3
All can change, therefore during concrete calculating, different shapes can be at man-like shelf 2
Calculate the different arm of force values during state, thus draw and hold required for pull bar 5 is under different conditions
The moment being subject to, and then pull bar 5 is configured by comprehensive various different state.
In crawler crane provided by the present invention, the structure of other parts refer to prior art, this
Place repeats no more.
Above crawler crane provided by the present invention is described in detail.Used herein
Principle and the embodiment of the present invention are set forth by specific case, saying of above example
The bright core concept being only intended to help to understand the present invention.It should be pointed out that, for the art
Those of ordinary skill for, under the premise without departing from the principles of the invention, it is also possible to this
Bright carrying out some improvement and modification, these improve and modify the guarantor also falling into the claims in the present invention
In the range of protecting.
Claims (9)
1. a crawler crane, gets off on (1) including getting off (1) and being arranged on
Man-like shelf (2) and coxopodite arm (3), pass through between described man-like shelf (2) and coxopodite arm (3)
Variable-amplitude steel wire rope drag-line (4) connects, it is characterised in that also include at least one pull bar (5),
The two ends of described pull bar (5) are hinged with described coxopodite arm (3) and get off (1) respectively, in order to
Described get off (1) is described man-like shelf (2) by described pull bar (5) and coxopodite arm (3)
Offer moment of rising and falling.
2. crawler crane as claimed in claim 1, it is characterised in that described pull bar (5)
For push-and-pull rod.
3. crawler crane as claimed in claim 2, it is characterised in that described pull bar (5)
Two hinged ends at least one is detachable.
4. crawler crane as claimed in claim 1, it is characterised in that described in get off (1)
Have some for described pull bar (5) hinged the first installation position (11) and/or
Described coxopodite arm (3) has some second installation positions (31) hinged for described pull bar (5).
5. the crawler crane as described in any one of claim 1-4, it is characterised in that also wrap
Including carrying roller (6), during described man-like shelf (2) rises and falls, described carrying roller (6) is upwards
The steel wire rope of variable-amplitude steel wire rope drag-line (4) described in support.
6. crawler crane as claimed in claim 5, it is characterised in that described man-like shelf
(2) front bar (21) hinged with respective top and rear bar (22), described carrying roller (6) are included
It is arranged in described front bar (21), and in vertical the upwardly extending of described front bar (21), with
The most upwards steel wire rope described in support is away from described front bar (21) preset distance.
7. crawler crane as claimed in claim 6, it is characterised in that described in get off (1)
Being provided with turntable (7), the bottom of described front bar (21) and rear bar (22) is all hinged on described
On turntable (7), described carrying roller (6) is arranged on the lower section of described front bar (21).
8. crawler crane as claimed in claim 7, it is characterised in that described carrying roller (6)
It is arranged on 1/3 body of rod that described front bar (21) is below.
9. crawler crane as claimed in claim 7, it is characterised in that described coxopodite arm
(3) being hinged on described turntable (7), the moment that described pull bar (5) is born is by following
Formula calculates:
F5*L5=(G1*L1*L3)/L2-G4*L4,
Wherein, the power that F5 is born by described pull bar (5)；
G1 is the gravity of described man-like shelf (2)；
G4 is the gravity of described coxopodite arm (3)；
L1 is the described man-like shelf (2) pin joint (O) relative to described front bar (21) bottom
The arm of force；
L2 is that the steel wire rope of described variable-amplitude steel wire rope drag-line (4) rear side is relative to described front bar (21)
The arm of force of the pin joint (O) of bottom；
L3 is that the steel wire rope of described variable-amplitude steel wire rope drag-line (4) front side is relative to described coxopodite arm
(3) arm of force of pin joint (P)；
L4 is the described coxopodite arm (3) arm of force relative to its pin joint (P)；
L5 is the pull bar (5) arm of force relative to the pin joint (P) of described coxopodite arm (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410201601.9A CN103935907B (en) | 2014-05-13 | 2014-05-13 | A kind of crawler crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410201601.9A CN103935907B (en) | 2014-05-13 | 2014-05-13 | A kind of crawler crane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103935907A CN103935907A (en) | 2014-07-23 |
| CN103935907B true CN103935907B (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410201601.9A Active CN103935907B (en) | 2014-05-13 | 2014-05-13 | A kind of crawler crane |
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| Country | Link |
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| CN (1) | CN103935907B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110077971A (en) * | 2019-05-29 | 2019-08-02 | 徐工集团工程机械股份有限公司建设机械分公司 | Luffing pulley blocks bit shift compensation system and its crane |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1016916B (en) * | 1954-12-17 | 1957-10-03 | Maschf Augsburg Nuernberg Ag | Mobile slewing crane with collapsible boom |
| US5484069A (en) * | 1991-09-20 | 1996-01-16 | The Manitowoc Company, Inc. | Process for self-disassembling a crawler crane |
| CN102491204A (en) * | 2011-12-23 | 2012-06-13 | 上海三一科技有限公司 | Auxiliary jib lifting device of crawler crane and crane comprising auxiliary jib lifting device |
| CN203865888U (en) * | 2014-05-13 | 2014-10-08 | 徐工集团工程机械股份有限公司 | Crawler crane |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4857880B2 (en) * | 2006-04-13 | 2012-01-18 | コベルコクレーン株式会社 | Mobile crane boom mounting method and boom mounting tool |
-
2014
- 2014-05-13 CN CN201410201601.9A patent/CN103935907B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1016916B (en) * | 1954-12-17 | 1957-10-03 | Maschf Augsburg Nuernberg Ag | Mobile slewing crane with collapsible boom |
| US5484069A (en) * | 1991-09-20 | 1996-01-16 | The Manitowoc Company, Inc. | Process for self-disassembling a crawler crane |
| CN102491204A (en) * | 2011-12-23 | 2012-06-13 | 上海三一科技有限公司 | Auxiliary jib lifting device of crawler crane and crane comprising auxiliary jib lifting device |
| CN203865888U (en) * | 2014-05-13 | 2014-10-08 | 徐工集团工程机械股份有限公司 | Crawler crane |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103935907A (en) | 2014-07-23 |
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