CN103318777B - Connection device for front vehicle and rear vehicle of super-tonnage crane and crane - Google Patents

Connection device for front vehicle and rear vehicle of super-tonnage crane and crane Download PDF

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Publication number
CN103318777B
CN103318777B CN201210080863.5A CN201210080863A CN103318777B CN 103318777 B CN103318777 B CN 103318777B CN 201210080863 A CN201210080863 A CN 201210080863A CN 103318777 B CN103318777 B CN 103318777B
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joint
arm
tie
connecting device
crane
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CN201210080863.5A
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CN103318777A (en
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孙丽
余钦伟
赵江平
周君
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Construction Machinery Branch of XCMG
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Construction Machinery Branch of XCMG
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Abstract

The invention relates to a connection device for a front vehicle and a rear vehicle of a super-tonnage crane and the crane. The connection device for the front vehicle and the rear vehicle comprises a sliding joint connected with the rear vehicle, a lengthening arm joint connected with the front vehicle, and a stretching joint connected with the sliding joint and the lengthening arm joint. A pull plate is further arranged at a junction of the sliding joint and the rear vehicle; a support rod is arranged on the stretching joint or at a junction of the stretching joint and the lengthening arm joint; the pull plate is connected with the top end of the support rod; and the pull plate, the support rod, the sliding joint and at least a part of the stretching joint form a triangular structure. No load transfer or little load transfer exists between the sliding joint and the stretching joint of the connection device for the front vehicle and the rear vehicle in an installation state of the crane, so that a cylinder design of the stretching joint is not limited by a load of the pull plate with a propeller strut. Therefore, the design difficulty and the manufacturing cost of the connection device for the front vehicle and the rear vehicle are greatly decreased.

Description

A kind of front and back car connecting device of super-tonnage crane and hoisting crane
Technical field
The present invention relates to a kind of bindiny mechanism of heavy wares, particularly relate to a kind of front and back car connecting device of super-tonnage crane and there is the hoisting crane of this device.
Background technology
For meeting the lifting demand to oversized equipment in the Larger Engineering Projects such as domestic petroleum, petrochemical industry, nuclear power, wind-powered electricity generation, iron and steel, hoisting crane is more and more to ultra-large type development, and lifting altitude is higher, and work range is larger, and load-carrying ability is stronger.In various types of hoisting crane, crawler crane becomes instrument indispensable in main equipment installation with the particularity of its lifting movement.Along with the development of maximizing, the series of problems in the processes such as the design brought, production, transportation, installation and use, seriously governs the development of crawler crane.
Front and back car connecting device is one of important component of super-tonnage crane, mainly plays effects such as alleviating impact, transmitted load.The basic structure composition of super-tonnage crane as shown in Figure 1.
Front and back car connecting device mainly plays a role in following three states of super-tonnage crane:
One, state 1 (as shown in Figure 1): hoisting crane straight ahead or retrogressing.Hoisting crane linearly advances when lift heavy or zero load, then, during actual driving, the speed V2 of front truck 100, cannot be consistent continuously with the speed V1 of rear car 6, and therefore, the distance S between the car of front and back there will be certain change.Now, the telescopic slide function of front and back car connecting device can solve workshop, the front and back load impacting adverse effect produced due to the change of the spacing S of front and back car.
For the telescopic slide function of above-mentioned front and back car connecting device, the front and back car connecting device of prior art is as shown in Fig. 2-1 and Fig. 2-2:
Before and after this car connecting device by slip joint a, stretch out joint b, extension arm saves c tri-part and forms.Slip joint a is connected with rear car 6, and extension arm joint c is connected with front truck 100.Slip joint a can be enclosed within stretch out joint b cylinder h on, and carry out relative sliding.
Two, state 2 (as shown in Figure 3): rear car drives front truck revolution.Hoisting crane lift heavy or unloaded time need to realize turntable 2 and 1 to rotate around getting off.Now, car connecting device in front and back plays the driving dynamic changes process of rear car 6 to the effect of turntable 2.Power is passed to turntable 2 by front and back car connecting device 7 by rear car 6, and turntable 21 can be rotated around getting off.Two state positions of rear car 6 shown in Fig. 3 are drive the state of turntable 2 before and after 1 rotation of getting off.
Three, state 3 (as shown in Figure 4): hoisting crane is installed.Hoisting crane installation process achieves has been removed mast 4 to the erected state in Fig. 1 by horizontality in Fig. 4.In order to mast 4 has been removed, the load of the own wt of mast 4 passes to Shears 5 by mast arm-tie d, the load of Shears 5 passes to front and back car connecting device 7 by Shears arm-tie e, before and after car connecting device 7 respectively by dynamic changes process to rear car 6 and turntable 2, the mast 4 that turntable 2 accepts, the load of Shears 5 and front and back car connecting device 71 are passed to ground by getting off, and so far complete the transmittance process of load.Now, car connecting device in front and back plays the effect of transmitting arm-tie e load.
Above-mentioned prior art mainly has following characteristics:
1) when Fig. 5-1 and Fig. 5-2 is state 2 rear car driving front truck revolution, the load condition that front and back car connecting device is subject to, front and back car connecting device 7 is subject to the side force Fh effect that rear car 6 produces, side force Fh is passed to by slip joint a and stretches out joint b, and load is all born by the cylinder h (as shown in Fig. 2-2) stretching out joint b.
2), when Fig. 6-1 and Fig. 6-2 is the installation of state 3 hoisting crane, the load condition that front and back car connecting device is subject to, front and back car connecting device 7 is subject to the power F of Shears arm-tie e eeffect, power F ebe passed to slip joint a by stretching out joint b, load is all born by the cylinder h (as shown in Fig. 2-2) stretching out joint b.
As shown in the above, front and back car connecting device 7 mainly bears side force F hwith Shears arm-tie power F etwo load, two load act on when two different conditions on front and back car connecting device 7 respectively, and load is not act on simultaneously, and two load are all transmitted by the cylinder h stretching out joint b.
The technological deficiency of above-mentioned prior art is:
1) because of the side force F that front and back car connecting device mainly bears h, Shears arm-tie power F etwo load are all transmitted by the cylinder h stretching out joint b, so the cylinder h design of stretching out joint b will according to two load F h, F ein maximum carrying out design;
2) because two load F h, F esize differences is very large, such as F egenerally F habout five times, therefore, according to two load F h, F ein maximum carry out design and can bring very large waste;
3) because in super-tonnage crane, Shears arm-tie power F every large, so scantling of structure and the weight of stretching out the cylinder h of joint b are very large, also bring the difficulty of the manufacturing and the significantly increase of cost thus.
Summary of the invention
The object of the invention is to propose a kind of solution due to the load of super-tonnage crane excessive and cause conventional before and after large, the high in cost of production problem of car connecting device Design and manufacture difficulty super-tonnage crane front and back car connecting device and there is the hoisting crane of this device.。
For achieving the above object, the invention provides a kind of front and back car connecting device of super-tonnage crane, comprise the slip joint be connected with rear car, the extension arm be connected with front truck save and be connected that described slip joint and extension arm save stretch out joint, also arm-tie is provided with in the junction of described slip joint and rear car, described stretch out on joint or stretch out the junction that joint saves with extension arm be provided with strut, described arm-tie is connected with the top of strut, and arm-tie, strut and described slip joint and stretch out at least partly to save and form triangular structure.
Preferably, the length of described strut is greater than the length of arm-tie.
Preferably, described slip joint is set in and stretches out on the cylinder of joint, stretches out the position of joint away from cylinder described in the lower end of described strut is arranged on.
Preferably, described super-tonnage crane is provided with Shears arm-tie, and the upper end of described Shears arm-tie is fixed on the Shears of hoisting crane, and the lower end of described Shears arm-tie is fixed on the junction of described arm-tie and strut.
More preferably, described arm-tie comprises the platy structure of two groups of Parallel Symmetrics, and described strut comprises the rod-like structure of two groups of Parallel Symmetrics, is provided with at least one group of horizontal reinforcement between described two groups of platy structures and/or between two groups of rod-like structure.
Another object of the present invention is to provide a kind of super-tonnage crane, this hoisting crane comprises above-mentioned front and back car connecting device
Based on technique scheme, advantage of the present invention is:
In the present invention under hoisting crane installing condition, the slip joint of front and back car connecting device and not stretch out between joint not or have few dynamic changes process, therefore, so the cylindrical design of stretching out joint is by the restriction of Shears arm-tie load.When designing this cylinder, only need meet hoisting crane straight ahead or retrogressing, car drives front truck to turn round the requirement of two states.Because the load of these two states significantly reduces compared with the load of hoisting crane installing condition, dimension, the invention enables the design difficulty of front and back car connecting device and manufacturing cost to be reduced significantly.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of hoisting crane in prior art;
Fig. 2-1 is the structural representation of front and back car connecting device in prior art;
Fig. 2-2 is the partial enlarged drawing of Fig. 2-1;
Fig. 3 is that rear car drives the pivotal working state schematic representation of front truck;
Fig. 4 is the initial condition schematic diagram that hoisting crane is installed;
Fig. 5-1 and Fig. 5-2 is a kind of load schematic of car connecting device before and after prior art;
Fig. 6-1 and Fig. 6-2 is the another kind of load schematic of car connecting device before and after prior art;
Fig. 7 is the structural representation that the present invention is arranged in hoisting crane;
Fig. 8 is lateral plan of the present invention;
Fig. 9 is structural representation of the present invention;
Figure 10-1 and Figure 10-2 is the load schematic of car connecting device before and after the present invention.
Detailed description of the invention
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
See Fig. 7, Fig. 8 and Fig. 9, the preferred embodiment of the front and back car connecting device of a kind of super-tonnage crane of the present invention shown in it, front and back of the present invention car connecting device 200 comprises the slip joint 10 be connected with rear car 6, the extension arm be connected with front truck 100 saved for 20 (as shown in Figure 7) and be connected described slip joint 10 and extension arm save 20 stretch out joint 30 (as shown in Figure 8 and Figure 9), arm-tie 40 is also provided with the junction of rear car at described slip joint 10, described stretch out on joint 30 or stretch out the junction that joint 30 and extension arm save 20 be provided with strut 50, described arm-tie 40 is connected with the top of strut 50, and arm-tie 40, strut 50 and described slip joint 10 and stretch out joint 30 at least partly and form triangular structure, as shown in Figure 8.A kind of embodiment of the present invention is that the lower end of strut 50 is arranged on and stretches out on joint 30, and another kind of embodiment is that the lower end of strut 50 is arranged on and stretches out the junction that joint 30 and extension arm save 20, as shown in Figure 8 and Figure 9.
Preferably, the length of described strut 50 is greater than the length of arm-tie 40, makes strut 50 close to level attitude; In normal using state, the described joint 30 of stretching out saves 20 with extension arm and is generally horizontality, and the length of strut 50 of the present invention is greater than the length of arm-tie 40, such as preferably the length of strut 50 is 1.5 ~ 3 times of arm-tie 40 length, and the loading direction that strut 50 is born is also close to level.
Further, described slip joint 10 be set in stretch out joint 30 cylinder on, stretch out the position of joint 30 away from cylinder described in the lower end of described strut 50 is arranged on.
Or described super-tonnage crane is provided with Shears arm-tie 70, the upper end of described Shears arm-tie 70 is fixed on the Shears 71 of hoisting crane, and the lower end of described Shears arm-tie 70 is fixed on the junction of described arm-tie 40 and strut 50.
Preferably, see Fig. 9, described arm-tie 40 comprises the platy structure of two groups of Parallel Symmetrics, described strut 50 comprises the rod-like structure of two groups of Parallel Symmetrics, at least one group of horizontal reinforcement 80 is provided with between described two groups of platy structures and/or between two groups of rod-like structure, in the present embodiment, the rod-like structure of two groups of Parallel Symmetrics of described strut 50 is provided with two groups of horizontal reinforcements 80, as shown in Figure 9.
Another object of the present invention is to provide a kind of super-tonnage crane, this hoisting crane includes except the General Construction of conventional crane, also comprises above-mentioned front and back car connecting device 200.
Particularly, working process of the present invention and principle of work are:
Hoisting crane of the present invention is furnished with fractionation load can being carried out both direction and can by the dynamic changes process being unfavorable for self bearing after splitting to the front and back car connecting device 200 of other objects.As shown in Figure 8 and Figure 9, the present invention is provided with arm-tie 40 and strut 50 between Shears arm-tie 70 and front and back car connecting device 200, and wherein arm-tie 40 is connected with rear car 6, and strut 50 is connected with the joint 20 that stretches out of front and back car connecting device 200.
By the present invention, the load condition of front and back car connecting device is changed, as shown in Figure 10-1 and Figure 10-2.The load F of Shears arm-tie 70 epart F grear car 6 is directly passed to, another part load F by arm-tie 40 fpassed to by strut 50 and stretch out the position of joint 30 away from cylinder, and this load F fthe cylindrical structure bearing load hardly of joint b, close to level, therefore, is stretched out in direction.By Figure 10-1 and Figure 10-2, front and back of the present invention car connecting device 200 slip joint 10 can be found out and stretch out between joint 30 there is no dynamic changes process, or only have minimum dynamic changes process.Therefore, so the cylindrical design of stretching out joint 30 is not subject to Shears arm-tie load F erestriction.
Be understood that for those skilled in the art, before and after the present invention, the extension arm joint 20 of connecting device can be truss structure, and box-structure also can be adopted to reach the object of the invention; In addition, the present invention adopts pulling plate structure transmitted load, the structure such as tubing, rope can be adopted to carry out dynamic changes process simultaneously; Further, the joint 30 that stretches out of the present invention can the cylindrical structure shown in figure, square tube, polygon cylinder can be adopted to reach the object of the invention simultaneously.
Obviously, those of ordinary skill in the art, with the front and back car connecting device of a kind of super-tonnage crane of the present invention and hoisting crane, can form various types of bindiny mechanism and weight-lifting equipment.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope of request of the present invention protection.

Claims (6)

1. the front and back car connecting device of a super-tonnage crane, comprise the slip joint (10) be connected with rear car, the extension arm be connected with front truck saves (20) and is connected described slip joint (10) and extension arm and saves stretching out of (20) and save (30), it is characterized in that: be also provided with arm-tie (40) at described slip joint (10) and the junction of rear car, upper or stretch out the junction that joint (30) and extension arm save (20) and be provided with strut (50) at the described joint (30) that stretches out, described arm-tie (40) is connected with the top of strut (50), and arm-tie (40), strut (50) and described slip joint (10) and stretch out at least partly and save (30) and form triangular structure, wherein, the lower end of strut (50) is arranged on that to stretch out joint (30) upper or be arranged on and stretch out the junction that joint (30) and extension arm save (20).
2. front and back according to claim 1 car connecting device, is characterized in that: the length of described strut (50) is greater than the length of arm-tie (40).
3. front and back according to claim 1 car connecting device, it is characterized in that: described slip joint (10) be set in stretch out joint (30) cylinder on, stretch out the position of joint (30) away from cylinder described in the lower end of described strut (50) is arranged on.
4. front and back according to claim 1 car connecting device, it is characterized in that: described super-tonnage crane is provided with Shears arm-tie (70), the upper end of described Shears arm-tie (70) is fixed on the Shears of hoisting crane, and the lower end of described Shears arm-tie (70) is fixed on the junction of described arm-tie (40) and strut (50).
5. the front and back car connecting device according to claim 1 or 2 or 3 or 4, it is characterized in that: described arm-tie (40) comprises the platy structure of two groups of Parallel Symmetrics, described strut (50) comprises the rod-like structure of two groups of Parallel Symmetrics, is provided with at least one group of horizontal reinforcement (80) between described two groups of platy structures and/or between two groups of rod-like structure.
6. a super-tonnage crane, is characterized in that: described hoisting crane comprises the front and back car connecting device described in above-mentioned any one claim.
CN201210080863.5A 2012-03-23 2012-03-23 Connection device for front vehicle and rear vehicle of super-tonnage crane and crane Active CN103318777B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103935891B (en) * 2014-04-29 2016-03-23 辽宁华原重型装备有限公司 A kind of hoisting crane assembly and linkage connection device thereof
CN112875492B (en) * 2021-01-25 2022-05-27 青岛中科坤泰装配建筑科技有限公司 Prefabricated utility tunnel hoisting point structure of assembled

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2149750A (en) * 1983-11-12 1985-06-19 Mannesmann Ag Improvements in mobile cranes
CN201605114U (en) * 2009-12-30 2010-10-13 徐工集团工程机械股份有限公司建设机械分公司 Lattice type jib crane and hoisting wire rope guiding device thereof
CN101920911A (en) * 2010-04-13 2010-12-22 长沙中联重工科技发展股份有限公司 Carrier vehicle, walking control device and method thereof
CN102295237A (en) * 2011-09-07 2011-12-28 长沙中联重工科技发展股份有限公司 Crane
CN202542742U (en) * 2012-03-23 2012-11-21 徐工集团工程机械股份有限公司 Connection device for front vehicle and rear vehicle of super-tonnage crane and crane

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2149750A (en) * 1983-11-12 1985-06-19 Mannesmann Ag Improvements in mobile cranes
CN201605114U (en) * 2009-12-30 2010-10-13 徐工集团工程机械股份有限公司建设机械分公司 Lattice type jib crane and hoisting wire rope guiding device thereof
CN101920911A (en) * 2010-04-13 2010-12-22 长沙中联重工科技发展股份有限公司 Carrier vehicle, walking control device and method thereof
CN102295237A (en) * 2011-09-07 2011-12-28 长沙中联重工科技发展股份有限公司 Crane
CN202542742U (en) * 2012-03-23 2012-11-21 徐工集团工程机械股份有限公司 Connection device for front vehicle and rear vehicle of super-tonnage crane and crane

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