CN104016231A - Closed damping system and reach stacker - Google Patents
Closed damping system and reach stacker Download PDFInfo
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- CN104016231A CN104016231A CN201410249224.6A CN201410249224A CN104016231A CN 104016231 A CN104016231 A CN 104016231A CN 201410249224 A CN201410249224 A CN 201410249224A CN 104016231 A CN104016231 A CN 104016231A
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- oil cylinder
- damping oil
- damping
- hinged
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Abstract
The invention provides a closed damping system, which comprises a first damping oil cylinder 1 and a second damping oil cylinder 2; the first ends of the first damping oil cylinder 1 and the second damping oil cylinder 2 are hinged with the end part 3 of the arm support, the second ends of the first damping oil cylinder 1 and the second damping oil cylinder 2 are hinged with the lifting appliance 4, one of the first damping oil cylinder 1 and the second damping oil cylinder 2 is installed on the inner side of the lifting appliance 4, the other one of the first damping oil cylinder 1 and the second damping oil cylinder 2 is installed on the outer side of the lifting appliance 4, a rod-free cavity 11 of the first damping oil cylinder is communicated with a rod-free cavity 21 of the second damping oil cylinder through a first oil pipe 5, a rod cavity 12 of the first damping oil cylinder is communicated with a rod cavity 22 of the second damping oil cylinder through a second oil pipe 6, the eccentric shaft 7 is further included. The invention also provides a front crane. According to the closed damping system and the front crane, the stroke difference of the damping oil cylinders is compensated in real time through the rotation of the eccentric shaft, so that the actual stroke differences of the two damping oil cylinders are completely consistent, and the mutual compensation is completely realized.
Description
Technical field
The present invention relates to engineering machinery field, in particular to a kind of enclosed damping system and front handling mobile crane.
Background technology
Between front handling mobile crane jib end and suspender, damping oil cylinder is installed at present, controls waving of suspender by the shock damping action of damping oil cylinder.When front handling mobile crane is in pitching or when braking, damping oil cylinder can be controlled the amplitude of fluctuation of suspender to a great extent, promptly makes suspender recovery level.
The damping system of front sling mainly contains following two kinds at present:
Mode one: as shown in Figure 1, jib end 3 is connected by bearing pin 8 with suspender 4, and damping oil cylinder one end is connected with jib end 3, and the other end is connected with suspender 4, and two identical damping oil cylinders are installed in homonymy.When jib pitching or suspender 4 wave, damping oil oil cylinder stroke changes, and two oil cylinders compress simultaneously or stretch simultaneously, and the hydraulic oil of the inside all needs ceaselessly to flow into fuel tank or compensates into from fuel tank, i.e. so-called far compensation.
Mode two: as shown in Figure 2, jib end 3 is connected by bearing pin 8 with suspender 4, the first damping oil cylinder 1 is connected with jib end 3 with second damping oil cylinder 2 one end, the other end is connected with suspender 4,2 damping oil cylinders are identical, but the first damping oil cylinder 1 is arranged in suspender 4 outsides, the second damping oil cylinder 2 is arranged in the interior survey of suspender 4, between two damping oil cylinders, is communicated with and is controlled by pipeline and control cock piece.In the time that jib pitching or suspender 4 wave, damping oil cylinder stroke changes, if the piston rod of the first damping oil cylinder 1 is retracted, the piston rod of the second damping oil cylinder 2 will stretch out so, hydraulic oil can flow into the second damping oil cylinder 2 from the first damping oil cylinder 1, and the hydraulic oil in two damping oil cylinders can be realized compensation nearby.When but jib pitching or suspender 4 wave, the stroke variable quantity of two damping oil cylinders can not be just the same in any angular position.In simplifying the internal structure of an organization as shown in Figure 3, in the time that suspender 4 is put the second place the first damping oil cylinder 1 is moved to B position from A position from primary importance, the amount of compression Δ L1=(L10-L11) of the first damping oil resistance cylinder 1, the elongation Δ L2=(L21-L20) of the second damping oil cylinder 2, calculate or draw known according to triangular function relation, in the process of waving in suspender whole process, can not swing at any angle and all meet Δ L1=Δ L2 in situation at suspender, that is to say, in the process of waving at suspender, the stroke of 2 damping oil cylinders changes different, therefore the first damping oil cylinder 1 and the second damping oil cylinder 2 hydraulic oil unnecessary or that lack after compensating nearby must regulate by far compensation, the mode that just oil mass of far compensation is arranged compared with damped cylinder homonymy is little a lot.
As mentioned above, mainly there is following shortcoming in prior art:
The front sling of prior art waves the adjusting that leveling damping system needs far compensation, therefore needs to increase corresponding control cock piece, hydraulic tubing etc., causes the increase of the complicated and cost of hydraulic efficiency pressure system.
Therefore, providing a kind of enclosed damping system, realize nearby compensation mutually completely, simplify hydraulic valve block, the hydraulic tubing etc. of damping system, is the technical problem to be solved in the present invention.
Summary of the invention
Technical matters to be solved by this invention is, a kind of enclosed damping system is provided, and realizes nearby compensation mutually completely, simplifies hydraulic valve block, the hydraulic tubing etc. of damping system.
In view of this, the invention provides a kind of enclosed damping system, comprising: the first damping oil cylinder 1; The second damping oil cylinder 2; First end and the jib end 3 of described the first damping oil cylinder 1 and described the second damping oil cylinder 2 are hinged, the second end and the suspender 4 of described the first damping oil cylinder 1 and described the second damping oil cylinder 2 are hinged, the first damping oil cylinder rodless cavity 11 is communicated with by the first oil pipe 5 with described the second damping oil cylinder rodless cavity 21, and described the first damping oil cylinder rod chamber 12 is communicated with by the second oil pipe 6 with described the second damping oil cylinder rod chamber 22; Described the first damping oil cylinder 1 is arranged on described suspender 4 inner sides with 2 one of described the second damping oil cylinders, another root is arranged on described suspender 4 outsides, also comprise eccentric shaft 7, described eccentric shaft 7 is hinged with described jib end 3 or described suspender 4, and described the first damping oil cylinder 1 or described the second damping oil cylinder 2 are hinged with eccentric shaft 7.
Preferably, described the first damping oil cylinder 1 is Δ L with the maximum row path difference of described the second damping oil cylinder 2 whole process, and the maximum eccentricity amount of described eccentric shaft 7 is L7, L7 > Δ L.
Preferably, described first end is cylinder barrel end, and described the second end is piston rod external part.
Preferably, described first end is piston rod external part, and described the second end is cylinder barrel end.
Preferably, described eccentric shaft 7 comprises little axle 71 and macro-axis 72, and described little axle 71 is hinged with the second end of described the first damping oil cylinder 1 or described the second damping oil cylinder 2, and described macro-axis 72 is hinged with described suspender 4 or described jib end 3.
Preferably, described eccentric shaft 7 comprises little axle 71 and macro-axis 72, and described macro-axis 72 is hinged with the second end of described the first damping oil cylinder 1 or described the second damping oil cylinder 2, and described little axle 71 is hinged with described suspender 4 or described jib end 3.
Preferably, described little axle 71 and described macro-axis 72 can relatively rotate.
Preferably, described little axle 71 is relative fixing with described macro-axis 72, is an entirety.
Preferably, wave in process in the whole process of described suspender 4, the rotational angle of described eccentric shaft 7 is less than 90 degree.
The present invention also provides a kind of front handling mobile crane, comprises vehicle frame, and the jib hinged with described vehicle frame also comprises the enclosed damping system described in above-mentioned any one.
In sum, enclosed damping system provided by the invention, realize the compensation mutually nearby of damping system completely, in the situation that not needing far compensation to regulate, realize the leveling of suspender, governing speed is fast, leveling is effective, simplify hydraulic valve block, the hydraulic tubing etc. of damping system, also reduced energy consumption, possessed good economy and practicality.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of embodiment of prior art front sling damping system;
Fig. 2 is the structural representation of the another kind of embodiment of prior art front sling damping system;
Fig. 3 is front sling damping system damping oil cylinder motion analysis rough schematic view described in Fig. 2;
Fig. 4 is the structural representation of enclosed damping system one embodiment of the present invention;
Fig. 5 is the enclosed damping system damping oil cylinder motion analysis rough schematic view shown in Fig. 4;
Fig. 6 a is the structural representation of the another embodiment eccentric shaft of enclosed damping system of the present invention;
Fig. 6 b is the birds-eye view of eccentric shaft described in Fig. 6 a.
Wherein, in Fig. 1 to Fig. 6, the corresponding relation between Reference numeral and component names is:
1 first damping oil cylinder, 11 first damping oil cylinder rodless cavities, 12 first damping oil cylinder rod chambers, 2 second damping oil cylinders, 21 second damping oil cylinder rodless cavities, 22 second damping oil cylinder rod chambers, 3 jib ends, 4 suspenders, 5 first oil pipes, 6 second oil pipes, 7 eccentric shafts, 71 little axles, 72 macro-axis, 8 bearing pins.
Detailed description of the invention
In order more clearly to understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, in the situation that not conflicting, the feature in the application's embodiment and embodiment can combine mutually.
A lot of details are set forth in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not subject to the restriction of following public specific embodiment.
Fig. 4, Fig. 5 show an embodiment of enclosed damping system provided by the invention.The shown enclosed damping system of this embodiment, comprising: the first damping oil cylinder 1; The second damping oil cylinder 2; First end and the jib end 3 of described the first damping oil cylinder 1 and described the second damping oil cylinder 2 are hinged, the second end and the suspender 4 of described the first damping oil cylinder 1 and described the second damping oil cylinder 2 are hinged, the first damping oil cylinder rodless cavity 11 is communicated with by the first oil pipe 5 with the second damping oil cylinder rodless cavity 21, and the first damping oil cylinder rod chamber 12 is communicated with by the second oil pipe 6 with described the second damping oil cylinder rod chamber 22; Described the first damping oil cylinder 1 is arranged on described suspender 4 one sides with 2 one of described the second damping oil cylinders, another root is arranged on described suspender 4 opposite sides, also comprise eccentric shaft 7, described eccentric shaft 7 is hinged with described jib end 3 or described suspender 4, and described the first damping oil cylinder 1 or described the second damping oil cylinder 2 are hinged with eccentric shaft 7.
As shown in Figure 5, in this embodiment, the piston rod external part of the second damping oil cylinder and eccentric shaft are articulated with M point, eccentric shaft and suspender hinged with N point, the second damping oil cylinder cylinder barrel end and jib end are articulated with G point, when suspender rotates around bearing pin, when the first damping oil cylinder swings to D position from C position: the first damping oil cylinder pressurized piston rod is retracted, the stroke of the first damping oil cylinder is compressed to L1d from L1c, the stroke variation delta L1=L1c-L1d of the first damping oil cylinder; The piston rod of the second damping oil cylinder stretches out, the piston rod external part of the second damping oil cylinder and the hinge-point M of eccentric shaft move to Md from Mc, the hinge-point N of eccentric shaft and suspender moves to Nd from Nc: the hinge progressive error of the second damping oil cylinder and suspender is: Δ L2=GNd-GNc=L2d-L2c, Δ L1 ≠ Δ L2; Due to the adjusting compensating action of eccentric shaft, the traveled distance of the second damping oil cylinder is become from L2c ' and be stretched to L2d ', the traveled distance variable quantity of the second damping oil cylinder is Δ L2 '=GMd-GMc=L2d '-L2c '.Under the adjusting compensating action of eccentric shaft, the traveled distance variable quantity of the second damping oil cylinder and the stroke variable quantity of the first damping oil cylinder swing at any angle in situation all consistent at suspender, i.e. Δ L1=Δ L2 '.So, in the process swinging at suspender, there is corresponding rotation in eccentric shaft, by the adjusting compensating action of eccentric shaft, can ensure that the traveled distance variable quantity of two damping oil cylinders is just the same at an arbitrary position.
Due to the cylinder diameter of two damping oil cylinders, bar footpath is just the same, the first oil pipe is communicated with the first damping oil cylinder rodless cavity and the second damping oil cylinder rodless cavity, the second oil pipe is communicated with the first damping oil cylinder rod chamber and the second damping oil cylinder rod chamber, therefore when the first damping oil cylinder piston rod is retracted, the hydraulic oil that the first damping oil cylinder rodless cavity is discharged all enters the second damping oil cylinder rodless cavity and supplements the required hydraulic oil of the second damping oil cylinder rodless cavity, the hydraulic oil that the second damping oil cylinder rod chamber is discharged all enters the first damping oil cylinder rod chamber and supplements the required hydraulic oil of the first damping oil cylinder rod chamber, thereby realize compensation mutually nearby completely, far compensation without any external world regulates.Between the first damping oil cylinder, the second damping oil cylinder, the first oil pipe and the second oil pipe, form the damping system of a sealing.
The enclosed damping system that this embodiment provides, realize the compensation mutually nearby of damping system completely, in the situation that not needing far compensation to regulate, realize the leveling of suspender, governing speed is fast, leveling is effective, hydraulic valve block, the hydraulic tubing etc. of damping system are simplified, also reduce energy consumption, possessed good economy and practicality.
In above-described embodiment, further, described first end is cylinder barrel end, and described the second end is piston rod external part.Preferably, described first end can also be piston rod external part, and now described the second end is cylinder barrel end.
In the cylinder barrel end of two damping oil cylinders and piston rod external part, which end and jib end are hinged and unrestricted, as long as two damping oil cylinders are to install in the same way, be that cylinder barrel end and jib end hinged or be piston rod external part and jib end is hinged all can simultaneously simultaneously.
In above-described embodiment, further, described the first damping oil cylinder 1 is Δ L with the maximum row path difference of described the second damping oil cylinder 2 whole process, and the maximum eccentricity amount of described eccentric shaft 7 is L7, L7 > Δ L.
In this embodiment, the hinge progressive error Δ L2 of maximum row path difference Δ L=first damping oil cylinder stroke variation delta L1-the second damping oil cylinder and suspender.The requirement of maximum eccentricity amount L7 to eccentric shaft is the maximum row path difference Δ L that L7 is greater than two damping oil cylinders, thereby in the time that suspender is rocked to optional position, the progressive error of two damping oil cylinders can be compensated by eccentric shaft, makes the traveled distance variable quantity of the second damping oil cylinder and the stroke variable quantity of the first damping oil cylinder consistent.
Fig. 6 a, Fig. 6 b show the structural representation of eccentric shaft in further embodiment of this invention, in this embodiment, further, described eccentric shaft 7 comprises little axle 71 and macro-axis 72, described little axle 71 is hinged with the second end of described the first damping oil cylinder 1 or described the second damping oil cylinder 2, and described macro-axis 72 is hinged with described suspender 4 or described jib end 3.
In this embodiment, particularly, eccentric shaft comprises little axle and macro-axis two parts, maximum eccentricity amount between little axle and macro-axis is L7, damping oil cylinder and little axle are hinged, and suspender is hinged with macro-axis, in suspender swing process, compensate the progressive error of two damping oil cylinders by the rotation of eccentric shaft, make the traveled distance variable quantity of two oil cylinders consistent.
Further, described eccentric shaft 7 comprises little axle 71 and macro-axis 72, and described macro-axis 72 is hinged with the second end of described the first damping oil cylinder 1 or described the second damping oil cylinder 2, and described little axle 71 is hinged with described suspender 4 or described jib end 3.
Another embodiment is, the second end of the macro-axis of eccentric shaft and the first damping oil cylinder or the second damping oil cylinder is hinged, little axle and suspender or jib end are hinged, similarly realize the Compensation Regulation of eccentric shaft to two damping oil cylinder progressive erroies in suspender swing process, make the traveled distance variable quantity of two damping oil cylinders consistent.
In above-described embodiment, further, described little axle 71 and described macro-axis 72 can relatively rotate.
In this embodiment, little axle and macro-axis are two relatively independent parts, and the little axle sleeve hinged with damping oil cylinder is contained in the macro-axis hinged with suspender, and this technical scheme assembling is simple, possesses good practicality.
Preferably, described little axle 71 is relative fixing with described macro-axis 72, is an entirety.
In this embodiment, little axle and macro-axis entirety are parts, with the hinged little axle of damping oil cylinder be the part of stretching out on the macro-axis hinged with suspender, the eccentric shaft intensity that this technical scheme provides is high, possesses good practicality.
In above-described embodiment, further, wave in process in the whole process of described suspender 4, the rotational angle of described eccentric shaft 7 is less than 90 degree.
In this embodiment, by concrete design calculation and position of articulating point simulation calculation, make the rotational angle of eccentric shaft 7 be less than 90 degree, ensure to wave in process in the whole process of suspender, there is not motion dead point in enclosed damping system provided by the present invention, rotates flexibly.
The present invention also provides a kind of front handling mobile crane, comprises vehicle frame, and the jib hinged with described vehicle frame also comprises the enclosed damping system as described in any one in technique scheme.Front handling mobile crane provided by the present invention, comprises the beneficial effect described in above-mentioned arbitrary technical scheme, does not repeat them here.
In sum, enclosed damping system provided by the invention, realize the compensation mutually nearby of damping system completely, in the situation that not needing far compensation to regulate, realize the leveling of suspender, governing speed is fast, leveling is effective, simplify hydraulic valve block, the hydraulic tubing etc. of damping system, also reduced energy consumption, possessed good economy and practicality.
In the present invention, the only object for describing of term " first ", " second ", and can not be interpreted as instruction or hint relative importance.For the ordinary skill in the art, can understand as the case may be above-mentioned term concrete meaning in the present invention.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. an enclosed damping system, comprising:
The first damping oil cylinder (1);
The second damping oil cylinder (2);
The first end of described the first damping oil cylinder (1) and described the second damping oil cylinder (2) and jib end (3) are hinged, the second end of described the first damping oil cylinder (1) and described the second damping oil cylinder (2) and suspender (4) are hinged, described the first damping oil cylinder (1) is arranged on described suspender (4) inner side with (2) one of described the second damping oil cylinders, another root is arranged on described suspender (4) outside
It is characterized in that, the first damping oil cylinder rodless cavity (11) is communicated with by the first oil pipe (5) with the second damping oil cylinder rodless cavity (21), the first damping oil cylinder rod chamber (12) is communicated with by the second oil pipe (6) with the second damping oil cylinder rod chamber (22), also comprise eccentric shaft (7), described eccentric shaft (7) is hinged with described jib end (3) or described suspender (4), and described the first damping oil cylinder (1) or described the second damping oil cylinder (2) are hinged with described eccentric shaft (7).
2. enclosed damping system according to claim 1, it is characterized in that, described the first damping oil cylinder (1) is Δ L with the maximum row path difference of described the second damping oil cylinder (2) whole process, the maximum eccentricity amount of described eccentric shaft (7) is L7, L7 > Δ L.
3. enclosed damping system according to claim 2, is characterized in that, described first end is cylinder barrel end, and described the second end is piston rod external part.
4. enclosed damping system according to claim 2, is characterized in that, described first end is piston rod external part, and described the second end is cylinder barrel end.
5. according to the enclosed damping system described in claim 3 or 4, it is characterized in that, described eccentric shaft (7) comprises little axle (71) and macro-axis (72), described little axle (71) is hinged with the second end of described the first damping oil cylinder (1) or described the second damping oil cylinder (2), and described macro-axis (72) is hinged with described suspender (4) or described jib end (3).
6. according to the enclosed damping system described in claim 3 or 4, it is characterized in that, described eccentric shaft (7) comprises little axle (71) and macro-axis (72), described macro-axis (72) is hinged with the second end of described the first damping oil cylinder (1) or described the second damping oil cylinder (2), and described little axle (71) is hinged with described suspender (4) or described jib end (3).
7. according to the enclosed damping system described in claim 5 or 6, it is characterized in that, described little axle (71) and described macro-axis (72) can relatively rotate.
8. according to the enclosed damping system described in claim 5 or 6, it is characterized in that, described little axle (71) is relative fixing with described macro-axis (72), is an entirety.
9. according to the enclosed damping system described in claim 5 or 6, it is characterized in that, wave in process in the whole process of described suspender (4), the rotational angle of described eccentric shaft (7) is less than 90 degree.
10. a front handling mobile crane, comprises vehicle frame, and the jib hinged with described vehicle frame, is characterized in that, also comprises enclosed damping system as in one of claimed in any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410249224.6A CN104016231B (en) | 2014-06-06 | 2014-06-06 | Closed damping system and reach stacker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410249224.6A CN104016231B (en) | 2014-06-06 | 2014-06-06 | Closed damping system and reach stacker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104016231A true CN104016231A (en) | 2014-09-03 |
| CN104016231B CN104016231B (en) | 2016-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410249224.6A Active CN104016231B (en) | 2014-06-06 | 2014-06-06 | Closed damping system and reach stacker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104016231B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109399449A (en) * | 2018-11-09 | 2019-03-01 | 中船华南船舶机械有限公司 | A kind of folding-jib hanging device suspender |
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| SU839970A1 (en) * | 1977-03-25 | 1981-06-23 | Подмосковное Отделение Всесоюзногопроизводственного Проектного Объеди-Нения "Союзводпроект" | Tipping gripper |
| EP0454474A1 (en) * | 1990-04-27 | 1991-10-30 | Gehl Company | Stabilizing cylinder for a rough terrain forklift |
| US7150366B1 (en) * | 2004-07-29 | 2006-12-19 | Mi-Jack Products, Inc. | Hanger chain anti-sway device for gantry crane |
| CN102295223A (en) * | 2011-06-28 | 2011-12-28 | 三一集团有限公司 | Lifting appliance and front crane |
| CN103058056A (en) * | 2013-01-28 | 2013-04-24 | 中铁重工有限公司 | Container lifting mechanism with balance anti-swinging function and eight-rope lifting three-point balancing method using container lifting mechanism |
| CN203112351U (en) * | 2013-01-28 | 2013-08-07 | 中铁重工有限公司 | Balancing anti-swing container hoisting mechanism |
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2014
- 2014-06-06 CN CN201410249224.6A patent/CN104016231B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU839970A1 (en) * | 1977-03-25 | 1981-06-23 | Подмосковное Отделение Всесоюзногопроизводственного Проектного Объеди-Нения "Союзводпроект" | Tipping gripper |
| EP0454474A1 (en) * | 1990-04-27 | 1991-10-30 | Gehl Company | Stabilizing cylinder for a rough terrain forklift |
| US7150366B1 (en) * | 2004-07-29 | 2006-12-19 | Mi-Jack Products, Inc. | Hanger chain anti-sway device for gantry crane |
| CN102295223A (en) * | 2011-06-28 | 2011-12-28 | 三一集团有限公司 | Lifting appliance and front crane |
| CN103058056A (en) * | 2013-01-28 | 2013-04-24 | 中铁重工有限公司 | Container lifting mechanism with balance anti-swinging function and eight-rope lifting three-point balancing method using container lifting mechanism |
| CN203112351U (en) * | 2013-01-28 | 2013-08-07 | 中铁重工有限公司 | Balancing anti-swing container hoisting mechanism |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109399449A (en) * | 2018-11-09 | 2019-03-01 | 中船华南船舶机械有限公司 | A kind of folding-jib hanging device suspender |
| CN109399449B (en) * | 2018-11-09 | 2020-05-01 | 中船华南船舶机械有限公司 | Folding arm type lifting appliance for lifting equipment |
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| CN104016231B (en) | 2016-01-20 |
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