CN102408073A - Crane and anti-tipback cylinder thereof - Google Patents
Crane and anti-tipback cylinder thereof Download PDFInfo
- Publication number
- CN102408073A CN102408073A CN2010102927076A CN201010292707A CN102408073A CN 102408073 A CN102408073 A CN 102408073A CN 2010102927076 A CN2010102927076 A CN 2010102927076A CN 201010292707 A CN201010292707 A CN 201010292707A CN 102408073 A CN102408073 A CN 102408073A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- hypsokinesis
- inner chamber
- oil
- bar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Actuator (AREA)
- Control And Safety Of Cranes (AREA)
Abstract
The invention discloses an anti-tipback cylinder comprising a cylinder barrel (1), a cylinder rod (2) and a cylinder rod piston (3). The cylinder rod piston (3) divides a cavity body of the cylinder barrel (1) into a rodless cavity (11) and a rod cavity (12), and the cylinder rod (2) is provided with a cylinder rod inner cavity (21); an oil-gas separation piston (22) is arranged in the cylinder rod inner cavity (21) and divides the cylinder rod inner cavity (21) into a first inner cavity (211) and a second inner cavity (212); and the cylinder rod piston (3) is provided with damping holes (31), hydraulic oil is filled in the rodless cavity (11), and gas is filled in the second inner cavity (212). On the one hand, the anti-tipback cylinder has higher working reliability and can realize two limit positions of maximum travel and dead travel, thus the total length of the design of the anti-tipback cylinder is reduced; on the other hand, the anti-tipback cylinder has the advantages of simple structure, small floor space and convenience for mounting. Furthermore, the invention further discloses a crane comprising the anti-tipback cylinder.
Description
Technical field
The present invention relates to the hoisting crane technical field, particularly a kind of anti-hypsokinesis cylinder.The invention still further relates to a kind of hoisting crane that comprises said anti-hypsokinesis cylinder.
Background technology
In large-tonnage, super-tonnage all terrain crane; Relation between brachium and the lifting performance is a kind of contradictory relation; Though when long-armed, highly reached requirement, load-carrying ability is limited, generally have only tens tons; Can not satisfy current demand far away, also not embody the performance advantage of large-tonnage, super-tonnage hoisting crane simultaneously.The lifting performance of hoisting crane when long-armed in order to promote, the tower arm arises at the historic moment, existing nowadays, the tower arm has become must being equipped with of large-tonnage, super-tonnage all terrain crane and has put.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is the structural representation of a kind of representative type all terrain crane in the prior art; Fig. 2 is an annexation scheme drawing of preventing hypsokinesis cylinder and tower arm and principal arm in the prior art.
As shown in Figure 1; Full ground hoisting crane comprise principal arm 1 ' and with principal arm 1 ' bonded assembly tower arm 3 ', as shown in Figure 2, principal arm 1 ' top is provided with link span 1 ' 1; Anti-hypsokinesis cylinder 2 ' one ends are connected with link span 1 ' 1; The other end is connected with preceding luffing bracket assembly 6 ' 1, and link span 1 ' 1 also is connected with back luffing bracket assembly 6 ' 2, is provided with arm-tie assembly 5 ' 1 between former and later two bracket assemblys.As shown in Figure 1, through luffing assembly pulley 4 ' 2 pulling arm-tie assemblies 5 ' 1, arm-tie assembly 5 ' 1 is through preceding arm-tie assembly 5 ' 2 pulling tower arms 3 ' luffing under the drive of motor for tower arm luffing elevator assembly 4 ' 1.When tower arm 3 ' wide-angle luffing; If the anti-hypsokinesis cylinder 2 of preceding luffing bracket assembly 6 ' 1 ' support; Will cause the 3 ' hypsokinesis of whole tower arm, and then roll-over accident might take place, therefore anti-hypsokinesis cylinder 2 ' be guarantees tower arm 3 ' the carry out important structure part of safe luffing.
Please refer to Fig. 3, Fig. 3 is the structural representation of a kind of oil cylinder balance cock compound type anti-squat system in the prior art.
Oil cylinder balance cock compound type anti-squat system mainly is made up of balance cock and oil cylinder, and oil cylinder is used for the support tower arm and prevents hypsokinesis, and balance cock is controlled the opening amount of balance cock and then the variation in the big chamber 2 ' 1 of control oil cylinder through the size of control current.
During the hypsokinesis of tower arm; (1), the change procedure of pressure is: the hypsokinesis of tower arm causes the big chamber of oil cylinder 2 ' 1 pressurizeds, and pressure raises, and this moment, oil cylinder cylinder length needed to shorten; To cooperate the increase of tower arm angle; Big chamber 2 ' 1 must guarantee enough pressure in the process that oil cylinder shortens, and this just need control the size and then the control presssure of balance cock restriction through the size of control current, with the product that satisfies big chamber 2 ' 1 pressure and area greater than the required support reaction of tower arm; (2), the change procedure of flow is: the hypsokinesis of tower arm causes big chamber 2 ' 1 pressed volume to reduce, and flow flows out through the balance cock restriction, simultaneously oil cylinder loculus 2 ' 2 is carried out repairing, does not inhale sky to guarantee oil cylinder loculus 2 ' 2.
When the tower arm leans forward; (1), the change procedure of pressure is: need promote the luffing bracket assembly when tower arm leans forward so that tower arm elevator put rope can tensioner, not disorder cable; This just requires the big chamber 2 ' 1 of oil cylinder that enough pressure is arranged; Therefore can supply pressure oil to satisfy pressure demand through the change-over valve switching-over that links to each other with pump, loculus 2 ' 2 be connected fuel tank simultaneously, oil return smoothly; (2), the change procedure of flow is: big chamber 2 ' 1 increases, and required flow increases, and by pump enough flows are provided through the change-over valve switching-over, and loculus 2 ' 2 reduces oil return.
Above-mentioned oil cylinder balance cock convolution anti-squat system needs outside oil sources; Brachium is generally more than 80 meters when the box-shaped arm is stretched entirely, and oil sources must obtain from pump, and pump links to each other with driving engine; Length requirement when this satisfies full semi-girder with regard to requiring enough big hose reel; And so big reel need take very big installing space, and this is a stern challenge to the compact all terrain crane in space, possibly realize hardly.In addition, huge reel also can increase the weight of complete machine, reduces the lift heavy amount, is a negative factor for the lifting of performance.Moreover the prolongation of pipeline also can cause the reduction of anti-hypsokinesis oil cylinder responding ability, and the length response more than 80 meters is very slow, in case emergency takes place, will be difficult to control.At last; The electric current of controlling electric proportional balancing valve has determined the size of the big cavity pressure of oil cylinder; And the required pressure in the big chamber of oil cylinder changes with cylinder is long; This just requires the size of electric current will carry out adjustment at any time, and this adjustment needs more accurate calculating, yet this more accurate calculating has implemented big difficulty.
Please refer to Fig. 4, Fig. 4 is the structural representation of the anti-hypsokinesis spring cylinder of a kind of embedded with spring in the prior art.
In the process of tower arm hypsokinesis, the hypsokinesis of tower arm will make spring cylinder 7 ' stroke shorten, and until dead journey, is in pressured state at whole process medi-spring always, and spring force prevents the hypsokinesis of tower arm as reaction of bearing.In the process that the tower arm leans forward; Leaning forward of tower arm can make spring cylinder 7 ' stroke increase, until range, in whole process; The amount of compression that produces in the pre compressed magnitude of spring and the hypsokinesis process is released, and spring force also promotes leaning forward of tower arm as thrust simultaneously.
Above-mentioned embedded with spring is prevented hypsokinesis spring cylinder 7 ' owing to adopt the bearing force of spring force as the hypsokinesis of tower arm; So in case spring is confirmed; Whole spring cylinder 7 ' in compression process the support reaction that can provide also just confirm, so before making anti-hypsokinesis spring cylinder, just need more accurate tower arm hypsokinesis support reaction, if error is bigger; Will cause spring cylinder 7 ' can not provide the tower arm required anti-hypsokinesis support reaction, whole in this case anti-hypsokinesis spring cylinder 7 ' will scrap.In addition, in the process of tower arm hypsokinesis, anti-hypsokinesis support reaction is to reduce gradually along with the long shortening of cylinder; It is a kind of directly proportional relation; But not inverse proportional relation, long variation is the inverse proportional relation and spring force is with cylinder, so this required maximum support reaction of tower arm when requiring spring will have enough pre compressed magnitudes to provide to prevent hypsokinesis spring cylinder 7 ' the longest; This just causes the spring difficult design, can not make full use of the compression of spring characteristic.Moreover the most important is to work as length of spring compressed on earth, and spring length has taken the stroke of too many cylinder, and cylinder can not be compressed at the end, so also just can not make full use of the whole stroke of anti-hypsokinesis spring cylinder.At last, go all out to reach as high as hundreds of tons behind the tower arm of large-tonnage, super-tonnage hoisting crane, spring is difficult to provide big power like this to realize anti-hypsokinesis function.
In sum; Guaranteeing on simple in structure, the basis little, easy for installation that takes up space; How to improve the reliability of anti-hypsokinesis cylinder working; And can make anti-hypsokinesis cylinder can realize range and dead two end positions of journey, thereby reduce anti-hypsokinesis cylinder design-calculated length overall, be the problem that those skilled in the art need solution badly.
Summary of the invention
The technical matters that the present invention will solve provides a kind of anti-hypsokinesis cylinder, and this anti-hypsokinesis cylinder has higher functional reliability on the one hand, and can realize range and dead two end positions of journey, thereby reduces anti-hypsokinesis cylinder design-calculated length overall; Simple in structure on the other hand, take up space little, easy for installation and cost lower.In addition, another technical matters that will solve of the present invention is that a kind of hoisting crane that comprises above-mentioned anti-hypsokinesis cylinder is provided.
For solving the problems of the technologies described above, the present invention provides a kind of anti-hypsokinesis cylinder, is used for hoisting crane, comprises cylinder barrel, cylinder bar and cylinder bar piston, and the cavity that said cylinder bar piston is separated said cylinder barrel is rodless cavity and rod chamber, and said cylinder bar is provided with cylinder bar inner chamber; Be provided with movably Oil-gas Separation piston in the said cylinder bar inner chamber, said Oil-gas Separation piston is separated said cylinder bar inner chamber and is reached second inner chamber away from said cylinder bar piston one side for first inner chamber near said cylinder bar piston one side; Said cylinder bar piston is provided with the damping hole that is communicated with said rodless cavity and said first inner chamber, is filled with hydraulic oil in the said rodless cavity, is filled with gas in said second inner chamber.
Preferably, said cylinder barrel is provided with cylinder bottom, and said cylinder bottom is provided with the oil-filled hole that is communicated with said rodless cavity, and said oil-filled hole is connected with fuel delivery device.
Preferably, said cylinder bottom also is provided with the survey oil pressure hole, and said survey oil pressure hole is connected with the oil pressure detecting device.
Preferably, said cylinder bar is provided with the bar head, and said bar head is provided with the air-filled pore that is communicated with said second inner chamber, and said air-filled pore is connected with air delivery device.
Preferably, said bar head also is provided with the survey pressure hole, and said survey pressure hole is connected with pressure test device.
Preferably, said pressure test device is provided with warning device; When the pressure of detected said second inner chamber of said pressure test device during less than predetermined value, said warning device sends alerting signal.
Preferably, said hoisting crane is provided with control setup and reaches and said control setup bonded assembly tower arm elevator, and said warning device is connected with control setup, so that said control setup sends the instruction of slowing down or braking according to said alerting signal to said tower arm elevator.
Preferably, also comprise:
Position detecting element is used for detecting said cylinder bar in the position of retraction process, and sends signal;
Control element is used to receive the signal that said position detecting element sends, and sends instruction according to this signal;
When said cylinder bar bounced back to the primary importance near its end of run, said position detecting element sent first signal, and said control element slows down according to the tower arm elevator of the said hoisting crane of said first signal control;
When said cylinder bar further bounced back to the second place near its end of run, said position detecting element sent secondary signal, and said control element is controlled the tower arm elevator braking of said hoisting crane according to said secondary signal.
Preferably, said position detecting element comprises first detector switch, second detector switch and detection piece, and said first detector switch and said second detector switch are installed on said cylinder barrel, and said detection piece is installed on said cylinder bar;
When said first detector switch detected said detection piece, said first detector switch sent said first signal;
Through after the schedule time, when said second detector switch detected said detection piece, said second detector switch sent said secondary signal.
Preferably, the end of said cylinder barrel is provided with mounting bracket, and said mounting bracket comprises the extension that stretches out said cylinder barrel end; Said first detector switch is installed on the outer end of said extension, and said second detector switch is installed on the inner of said extension.
In addition, for solving the problems of the technologies described above, the present invention also provides a kind of hoisting crane, luffing bracket assembly and principal arm before comprising; Said hoisting crane also comprises above-mentioned each described anti-hypsokinesis cylinder, and said anti-hypsokinesis cylinder one end is connected with said preceding luffing bracket assembly, and the other end is connected with said principal arm.
On the basis of existing technology; Be provided with movably Oil-gas Separation piston in the cylinder bar inner chamber of anti-hypsokinesis cylinder provided by the present invention, said Oil-gas Separation piston is separated said cylinder bar inner chamber and is reached second inner chamber away from said cylinder bar piston one side for first inner chamber near said cylinder bar piston one side; Said cylinder bar piston is provided with the damping hole that is communicated with said rodless cavity and said first inner chamber, is filled with hydraulic oil in the said rodless cavity, is filled with gas in said second inner chamber.
In the process of tower arm hypsokinesis; Hydraulic oil in the hydraulic oil pressurized in the rodless cavity, thereby pressurised hydraulic flows to first inner chamber through the damping hole of being located on the cylinder bar piston, this moment first inner chamber can promote the Oil-gas Separation piston to one lateral movement of second inner chamber; Thereby second gas volume in the inner chamber reduce; Pressure increases, and follows carat imperial equation of uncle, and when the gaseous tension in second inner chamber equals the pressure of the hydraulic oil in first inner chamber; The stop motion of Oil-gas Separation piston reaches pressure balance; When the tower arm continues hypsokinesis; Hydraulic oil in the rodless cavity is pressurized once more, repeats said process, reaches pressure balance once more; Until the hypsokinesis of tower arm during to end position; This moment, anti-hypsokinesis cylinder reached the compression limit position, and the cylinder bar is compressed to the cylinder bottom of cylinder barrel, whole and then first inner chamber of the hydraulic oil in the rodless cavity.The tower arm leans forward in the process, and the working process and the said process of anti-hypsokinesis cylinder are opposite, repeat no more at this.
In above-mentioned working process; On cylinder bar piston, be provided with damping hole; Rodless cavity and first inner chamber that to prevent the hypsokinesis cylinder through damping hole are communicated with, thereby the hydraulic oil in the rodless cavity can get in first inner chamber through damping hole lentamente, and then can realize the smooth change of pressure; And do not produce impact, thereby improved the reliability of work.
In addition, the stroke of above-mentioned anti-hypsokinesis cylinder is the same with oil cylinder, can realize range and dead two end positions of journey, thereby can reduce anti-hypsokinesis cylinder design-calculated length overall, and is easy for installation for more wide space has been reserved in the installation of anti-hypsokinesis cylinder, design more reasonable.
Moreover; With respect to oil cylinder balance cock compound type anti-squat system of the prior art; Anti-hypsokinesis cylinder of the present invention is that oil gas combines cylinder, and the volume of the hydraulic oil in the rodless cavity and first inner chamber do not change all the time, thereby the oil pipe that need not be provided with more than 80 meters carries out oil-filled or oil return; Thereby simple in structure, take up space little, easy for installation, and the problem of also having avoided simultaneously the responding ability that oil pipe caused more than 80 meters to reduce.
Moreover; With respect to anti-hypsokinesis spring cylinder of the prior art; Inflation pressure in second inner chamber of the anti-hypsokinesis cylinder of the present invention can change as required flexibly, thereby in same travel position, its bearing force that can provide can change; Thereby before design, do not want accurate Calculation load, avoided anti-hypsokinesis spring cylinder to need the problem of accurate Calculation load.
At last, anti-hypsokinesis cylinder of the present invention is on the basis of existing oil cylinder, simply to design, and the course of processing and oil cylinder are basic identical, need not special processing, thus simple in structure, cost is lower.
In sum, anti-hypsokinesis cylinder provided by the present invention has higher functional reliability on the one hand, and can realize range and dead two end positions of journey, thereby reduces anti-hypsokinesis cylinder design-calculated length overall; Simple in structure on the other hand, take up space little, easy for installation and cost lower.
In addition, the technique effect of the technique effect of hoisting crane provided by the present invention and above-mentioned anti-hypsokinesis cylinder is basic identical, repeats no more at this.
Description of drawings
Fig. 1 is the structural representation of a kind of representative type all terrain crane in the prior art;
Fig. 2 is an annexation scheme drawing of preventing hypsokinesis cylinder and tower arm and principal arm in the prior art;
Fig. 3 is the structural representation of a kind of oil cylinder balance cock compound type anti-squat system in the prior art;
Fig. 4 is the structural representation of the anti-hypsokinesis spring cylinder of a kind of embedded with spring in the prior art;
Structural representation when Fig. 5 extends the limit for anti-hypsokinesis cylinder in an embodiment of the present invention is in;
Structural representation when Fig. 6 is compressed to intermediateness for the anti-hypsokinesis cylinder among Fig. 5;
Structural representation when Fig. 7 continues to be compressed to another intermediateness for the anti-hypsokinesis cylinder among Fig. 6;
Structural representation when Fig. 8 continues to be compressed to compression limit for the anti-hypsokinesis cylinder among Fig. 7;
Fig. 9 is the structural representation of anti-hypsokinesis cylinder among the another kind of embodiment of the present invention;
Figure 10 is the principle control block diagram of anti-hypsokinesis cylinder among Fig. 9;
Principle control block diagram after anti-hypsokinesis cylinder among Figure 11 Fig. 9 further improves.
Wherein, the corresponding relation between component names and the Reference numeral is among Fig. 1 to Fig. 4:
Principal arm 1 '; Link span 1 ' 1; Anti-hypsokinesis cylinder 2 '; The big chamber 2 ' 1 of oil cylinder; Oil cylinder loculus 2 ' 2; Tower arm 3 '; Tower arm luffing elevator assembly 4 ' 1; Luffing assembly pulley 4 ' 2; Arm-tie assembly 5 ' 1; Preceding arm-tie assembly 5 ' 2; Preceding luffing bracket assembly 6 ' 1; Back luffing bracket assembly 6 ' 2.
Corresponding relation among Fig. 5 to Figure 11 between component names and the Reference numeral is:
Cylinder barrel 1; Rodless cavity 11; Rod chamber 12; Cylinder bottom 13; Oil-filled hole 131; Survey oil pressure hole 132; Cylinder bar 2; Cylinder bar inner chamber 21; First inner chamber 211; Second inner chamber 212; Oil-gas Separation piston 22; Bar head 23; Air-filled pore 231; Survey pressure hole 232; Cylinder bar piston 3; Damping hole 31; Position detecting element 4; First detector switch 41; Second detector switch 42; Detect piece 43; Control element 5; Tower arm elevator 6; Extension 7.
The specific embodiment
Core of the present invention provides a kind of anti-hypsokinesis cylinder, and this anti-hypsokinesis cylinder has higher functional reliability on the one hand, and can realize range and dead two end positions of journey, thereby reduces anti-hypsokinesis cylinder design-calculated length overall; Simple in structure on the other hand, take up space little, easy for installation and cost lower.In addition, another core of the present invention is that a kind of hoisting crane that comprises above-mentioned anti-hypsokinesis cylinder is provided.
In order to make those skilled in the art understand technical scheme of the present invention better, the present invention is done further detailed description below in conjunction with accompanying drawing and specific embodiment.
Please refer to Fig. 5, Fig. 6, Fig. 7 and Fig. 8, the structural representation when Fig. 5 extends the limit for anti-hypsokinesis cylinder in an embodiment of the present invention is in; Structural representation when Fig. 6 is compressed to intermediateness for the anti-hypsokinesis cylinder among Fig. 5; Structural representation when Fig. 7 continues to be compressed to another intermediateness for the anti-hypsokinesis cylinder among Fig. 6; Structural representation when Fig. 8 continues to be compressed to compression limit for the anti-hypsokinesis cylinder among Fig. 7.
In one embodiment, anti-hypsokinesis cylinder provided by the present invention is used for hoisting crane, comprises cylinder barrel 1, cylinder bar 2 and cylinder bar piston 3, and the cavity that cylinder bar piston 3 is separated cylinder barrel 1 is rodless cavity 11 and rod chamber 12, and cylinder bar 2 is provided with cylinder bar inner chamber 21.
On the basis of above-mentioned prior art, to shown in Figure 8, be provided with movably Oil-gas Separation piston 22 in the cylinder bar inner chamber 21 like Fig. 5; This Oil-gas Separation piston 22 is divided into two parts with cylinder bar inner chamber 21; Be respectively near first inner chamber 211 of cylinder bar piston 3 one sides with away from second inner chamber 212 of cylinder bar piston 3 one sides, and cylinder bar piston 3 is provided with the damping hole 31 that is communicated with the rodless cavity 11 and first inner chamber 211; Be filled with hydraulic oil in the rodless cavity 11, be filled with gas in second inner chamber 212.
As shown in Figure 5, when anti-hypsokinesis cylinder was in the elongation limit, the gas volume of second inner chamber 212 was maximum, is V
1The volume V of 1, the first inner chamber 211
12 is zero (the determined volume of Oil-gas Separation piston 22 depressed parts can be ignored), and this moment, hydraulic oil all got in the rodless cavity 11, and volume is V
13.
When the tower arm began hypsokinesis, as shown in Figure 6, anti-hypsokinesis cylinder was compressed; At this moment, the hydraulic oil in the rodless cavity 11 gets in first inner chamber 211 through damping hole 31, and the hydraulic oil in first inner chamber 211 can promote Oil-gas Separation piston 22 to 212 1 lateral movements of second inner chamber; Second inner chamber, 212 gas volumes reduce; Pressure increases, and follows carat imperial equation of uncle, until reaching state of equilibrium; At this moment, the gas volume of second inner chamber 212 is V
2The volume of the hydraulic oil of 1, the first inner chamber 211 is V
22, the volume of the hydraulic oil in the rodless cavity 11 is V
23, because the hydraulic oil cumulative volume is constant, thereby V
13=V
22+V
23.
The tower arm continues hypsokinesis; As shown in Figure 7, anti-hypsokinesis cylinder is compressed once more, and the hydraulic oil of rodless cavity 11 continues to get in first inner chamber 211 again; Oil-gas Separation piston 22 continues to 212 1 lateral movements of second inner chamber; Second inner chamber, 212 gas volumes continue to reduce, and pressure continues to increase, until reaching state of equilibrium once more; At this moment, the gas volume of second inner chamber 212 is V
3The volume of the hydraulic oil of 1, the first inner chamber 211 is V
32, the volume of the hydraulic oil in the rodless cavity 11 is V
33, because the hydraulic oil cumulative volume is constant, thereby V
13=V
22+V
23=V
32+V
33.
When tower arm hypsokinesis during to end position; As shown in Figure 8, anti-hypsokinesis cylinder is compressed in end position, and the hydraulic oil in the rodless cavity 11 all gets in first inner chamber 211; Oil-gas Separation piston 22 continues to 212 1 lateral movements of second inner chamber again; Second inner chamber, 212 gas volumes continue to reduce again, and pressure continues to increase again, until reaching state of equilibrium once more; At this moment, the gas volume of second inner chamber 212 is V
4The volume of the hydraulic oil of 1, the first inner chamber 211 is V
42, the volume of hydraulic oil is zero in the rodless cavity 11, thereby V
13=V
22+V
23=V
32+V
33=V
42.
Below will introduce technique effect of the present invention:
In above-mentioned working process; On cylinder bar piston 3, be provided with damping hole 31; To prevent that through damping hole 31 rodless cavity 11 of hypsokinesis cylinder and first inner chamber 211 are communicated with, thereby the hydraulic oil in the rodless cavity 11 can get in first inner chamber 211 through damping hole 31 lentamente, and then can realize the smooth change of pressure; And do not produce impact, thereby improved the reliability of work.
In addition, the stroke of above-mentioned anti-hypsokinesis cylinder is the same with oil cylinder, can realize range and dead two end positions of journey, thereby can reduce anti-hypsokinesis cylinder design-calculated length overall, and is easy for installation for more wide space has been reserved in the installation of anti-hypsokinesis cylinder, design more reasonable.
Moreover; With respect to oil cylinder balance cock compound type anti-squat system of the prior art; Anti-hypsokinesis cylinder of the present invention is that oil gas combines cylinder, and the volume of the hydraulic oil in rodless cavity 11 and first inner chamber 211 do not change all the time, thereby oil pipe more than 80 meters need be set carry out oil-filled or oil return is operated; Thereby simple in structure, take up space little, easy for installation, and the problem of also having avoided simultaneously the responding ability that oil pipe caused more than 80 meters to reduce.
Moreover; With respect to anti-hypsokinesis spring cylinder of the prior art; Inflation pressure in second inner chamber 212 of the anti-hypsokinesis cylinder of the present invention can change as required flexibly, thereby in same travel position, its support reaction that can provide can change; Thereby before design, do not want accurate Calculation load, avoided anti-hypsokinesis spring cylinder to need the problem of accurate Calculation load.
At last, anti-hypsokinesis cylinder of the present invention is on the basis of existing oil cylinder, simply to design, and the course of processing and oil cylinder are basic identical, need not special processing, thus simple in structure, cost is lower.
In sum, anti-hypsokinesis cylinder provided by the present invention has higher functional reliability on the one hand, and can realize range and dead two end positions of journey, thereby reduces anti-hypsokinesis cylinder design-calculated length overall; Simple in structure on the other hand, take up space little, easy for installation and cost lower.
Need to prove, in anti-hypsokinesis cylinder of the present invention, can in cylinder bar inner chamber 21, Oil-gas Separation piston 3 be set, aerification all in cylinder bar inner chamber 21 and the rodless cavity 11; On this basis, anti-hypsokinesis cylinder is compressed, and the gas in the rodless cavity 11 gets in the cylinder bar inner chamber 21 through damping hole 31, and volume of gas reduces, and pressure increases, and follows carat imperial equation of uncle, obviously also can provide the tower arm to prevent the needed support reaction of hypsokinesis.In case the hypsokinesis cylinder is in when extending the limit is example; Anti-hypsokinesis cylinder and the present invention of this kind structure design is provided with the anti-hypsokinesis cylinder of Oil-gas Separation piston 3 and compares; The volume of the former gas is the volume sum of cylinder bar inner chamber 21 and rodless cavity 11; The volume of latter's gas is the volume of cylinder bar inner chamber 21, and the former gas volume is greater than the latter's gas volume, according to the imperial equation P of carat uncle
1V
1=P
2V
2Can know; The former all is compressed a unit volume V with the latter's gas volume; The latter's gaseous tension increase value is greater than the pressure increase value of the former gas, thereby the anti-hypsokinesis cylinder that the present invention is provided with Oil-gas Separation piston 3 can provide the bigger anti-hypsokinesis support reaction of tower arm.
In addition, need to prove also that the area that Oil-gas Separation piston 3 can be set is S
1, the sectional area of rodless cavity 11 is S
2, gaseous tension is P in second inner chamber 212
1, the pressure of the hydraulic oil in the rodless cavity 11 and first inner chamber 211 is P
2, when reaching state of equilibrium, P
1=P
2On this basis, prevent that the support reaction that the hypsokinesis cylinder provides is P
2S
2, design through structure anti-hypsokinesis cylinder, such as the sectional area that reduces cylinder bar inner chamber 21, that is reduce the volume of gas in second inner chamber 211, can know that according to the analysis of the preceding paragraph this kind design can increase the support reaction that anti-hypsokinesis cylinder provides as required; Perhaps also can increase the support reaction that anti-hypsokinesis cylinder is provided through the mode that increases rodless cavity 11 sectional areas.
Please refer to Fig. 9, Fig. 9 is the structural representation of anti-hypsokinesis cylinder among the another kind of embodiment of the present invention.
In the above-described embodiments, can also make further improvement, thereby obtain another kind of embodiment of the present invention.Such as, cylinder barrel 1 is provided with cylinder bottom 13, and cylinder bottom 13 is provided with the oil-filled hole 131 that is communicated with rodless cavity 11, and oil-filled hole 131 is connected with fuel delivery device.The volume of the hydraulic oil in the airtight cavity that rodless cavity 11, damping hole 31231 and cylinder bar inner chamber 21 form more after a little while; Can be oil-filled in said rodless cavity 11 through said fuel delivery device; Alerting ability is higher, thereby has avoided preventing hypsokinesis spring cylinder spring in the prior art in case destroy the problem of just scrapping.
Further, cylinder bottom 13 also is provided with surveys oil pressure hole 132, surveys oil pressure hole 132 and is connected with the oil pressure detecting device.Institute's oil pressure detecting device can detection at any time hydraulic oil pressure, thereby make operating personal can grasp pressure changing at any time, occur can taking corresponding safety measure when unusual when the pressure of hydraulic oil changes.Said oil pressure detecting device specifically can be pressure sensor, can also be the pressure detecting part of other types certainly.
Further, as shown in Figure 9, cylinder bar 2 is provided with bar head 23, and bar head 23 is provided with the air-filled pore 231 that is communicated with second inner chamber 212, and air-filled pore 231 is connected with air delivery device.Gas in second inner chamber 212 can be inflated in second inner chamber 212 through said air delivery device more after a little while, and alerting ability is higher; And can root as required, in second inner chamber 212, charge into more gas, to increase the anti-hypsokinesis support reaction that anti-hypsokinesis cylinder can provide.
Further, as shown in Figure 9, bar head 23 also is provided with surveys pressure hole 232, surveys pressure hole 232 and is connected with pressure test device.Said pressure test device can detection at any time pressure in second inner chamber 212, thereby make operating personal can grasp pressure changing at any time, occur can taking corresponding safety measure when unusual when pressure changes.Such as, said pressure test device can be provided with warning device, and when the pressure of detected second inner chamber 212 of said pressure test device during less than predetermined value, said warning device sends alerting signal.And further, said warning device is connected with the control setup of hoisting crane, so that said control setup sends the instruction of slowing down or braking according to said alerting signal to the tower arm elevator 6 of said hoisting crane.
When the pressure in second inner chamber 212 during less than predetermined value, warning device sends alerting signal, and this signal is transferred to said control setup, said control setup automatic guidance tower arm elevator 6 brake snub, and this mode has higher intelligent level.In addition; Control setup also further can be connected with said air delivery device, and said control setup is controlled said air delivery device to 212 gas transmissions of second inner chamber when receiving said alerting signal; This mode has higher intelligent level equally, and has further improved safety.
Please refer to Figure 10 and Figure 11, Figure 10 is the principle control block diagram of anti-hypsokinesis cylinder among Fig. 9; Principle control block diagram after anti-hypsokinesis cylinder among Figure 11 Fig. 9 further improves.
In above-mentioned any embodiment of the present invention, can also make further improvement.Such as, please refer to Figure 10, said anti-hypsokinesis cylinder can also comprise position detecting element 4, is used for detecting the position of cylinder bar 2 in retraction process, and sends signal; At this, need to prove, the detecting element of any type, as long as can detect cylinder bar 2 in retraction process the position and send signal, all within the protection domain of present embodiment.
Said anti-hypsokinesis cylinder also comprises control element 5, is used for the signal that receiving position detecting element 4 sends, and sends instruction according to this signal.At this, it is pointed out that control element 5 and control setup mentioned above can be same controller.
When cylinder bar 2 bounced back to the primary importance near its end of run, position detecting element 4 sent first signal, and control element 5 slows down according to the said first signal control tower arm elevator 6, and then the hypsokinesis of control tower arm is slowed down.
When cylinder bar 2 further bounced back to the second place near its end of run, position detecting element 4 sent secondary signal, and control element 5 is according to said secondary signal control tower arm elevator 6 brakings, and then control tower arm hypsokinesis braking.
The anti-hypsokinesis cylinder that present embodiment provided has been realized the steady deceleration and the safety arrestment of the hypsokinesis of tower arm, thereby makes the work of tower arm more safe and reliable.
Please refer to Figure 10; In the above-described embodiments; We can make concrete setting to position detecting element 4, and particularly, position detecting element 4 comprises first detector switch 41, second detector switch 42 and detects piece 43; First detector switch 41 and second detector switch 42 are installed on cylinder barrel 1, detect piece 43 and are installed on cylinder bar 2.
When first detector switch 41 detected detection piece 43, first detector switch 41 sent said first signal, and control element 5 slows down according to the said first signal control tower arm elevator 6, and then the hypsokinesis of control tower arm is slowed down.Through after the schedule time, when second detector switch 42 detected detection piece 43, second detector switch 42 sent said secondary signal, and control element 5 is according to said secondary signal control tower arm elevator 6 brakings, and then control tower arm hypsokinesis braking.
Certainly; Position detecting element 4 can also be made up of a detector switch and two detection pieces; Through suitable structure design, when cylinder bar 2 arrived said primary importance, detector switch detected first and detects piece; Thereby send first signal, control element 5 slows down according to the said tower arm of said first signal control elevator 6; When cylinder bar 2 arrived the said second place, detector switch detected second and detects piece, thereby sends secondary signal, and control element 5 is according to said secondary signal control tower arm elevator 6 brakings.Obviously, this structure design also can be realized goal of the invention, the technical solution problem.
Please refer to Fig. 9, in the above-described embodiments, we can make further setting to the installation site of first detector switch 41 and second detector switch 42.Particularly, the end of cylinder barrel 1 is provided with mounting bracket, and said mounting bracket comprises the extension 7 that stretches out cylinder barrel 1 end; First detector switch 41 is installed on the outer end of extension 7, and second detector switch 42 is installed on the inner of extension 7.This set mode is simple in structure, and cost is lower.
In addition, the present invention also provides a kind of hoisting crane, luffing bracket assembly and principal arm before comprising; The described anti-hypsokinesis cylinder of also above-mentioned any embodiment of said hoisting crane, said anti-hypsokinesis cylinder one end is connected with said preceding luffing bracket assembly, and the other end is connected with said principal arm; Other parts of said hoisting crane can be with reference to prior art, and this paper no longer launches.
At last, more than hoisting crane provided by the present invention and anti-hypsokinesis cylinder thereof have been carried out detailed introduction.Used concrete example among this paper principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (11)
1. an anti-hypsokinesis cylinder is used for hoisting crane, comprises cylinder barrel (1), cylinder bar (2) and cylinder bar piston (3), and the cavity that said cylinder bar piston (3) is separated said cylinder barrel (1) is rodless cavity (11) and rod chamber (12), and said cylinder bar (2) is provided with cylinder bar inner chamber (21); It is characterized in that; Be provided with movably Oil-gas Separation piston (22) in the said cylinder bar inner chamber (21), it be that first inner chamber (211) near said cylinder bar piston (3) one sides reaches second inner chamber (212) away from said cylinder bar piston (3) one sides that said Oil-gas Separation piston (22) is separated said cylinder bar inner chamber (21); Said cylinder bar piston (3) is provided with the damping hole (31) that is communicated with said rodless cavity (11) and said first inner chamber (211), and said rodless cavity is filled with hydraulic oil in (11), is filled with gas in said second inner chamber (212).
2. anti-hypsokinesis cylinder as claimed in claim 1 is characterized in that said cylinder barrel (1) is provided with cylinder bottom (13), and said cylinder bottom (13) is provided with the oil-filled hole (131) that is communicated with said rodless cavity (11), and said oil-filled hole (131) is connected with fuel delivery device.
3. anti-hypsokinesis cylinder as claimed in claim 2 is characterized in that, said cylinder bottom (13) also is provided with surveys oil pressure hole (132), and said survey oil pressure hole (132) is connected with the oil pressure detecting device.
4. like claim 2 or 3 described anti-hypsokinesis cylinders, it is characterized in that said cylinder bar (2) is provided with bar head (23), said bar head (23) is provided with the air-filled pore (231) that is communicated with said second inner chamber (212), and said air-filled pore (231) is connected with air delivery device.
5. anti-hypsokinesis cylinder as claimed in claim 4 is characterized in that, said bar head (23) also is provided with surveys pressure hole (232), and said survey pressure hole (232) is connected with pressure test device.
6. anti-hypsokinesis cylinder as claimed in claim 5 is characterized in that said pressure test device is provided with warning device; When the pressure of detected said second inner chamber of said pressure test device (212) during less than predetermined value, said warning device sends alerting signal.
7. anti-hypsokinesis cylinder as claimed in claim 6; It is characterized in that; Said hoisting crane is provided with control setup and reaches and said control setup bonded assembly tower arm elevator (6); Said warning device is connected with control setup, so that said control setup sends the instruction of slowing down or braking according to said alerting signal to said tower arm elevator (6).
8. like each described anti-hypsokinesis cylinder of claim 1 to 7, it is characterized in that, also comprise:
Position detecting element (4) is used for detecting said cylinder bar (2) in the position of retraction process, and sends signal;
Control element (5) is used to receive the signal that said position detecting element (4) sends, and sends instruction according to this signal;
When said cylinder bar (2) bounced back to the primary importance near its end of run, said position detecting element (4) sent first signal, and said control element (5) slows down according to the tower arm elevator (6) of the said hoisting crane of said first signal control;
When said cylinder bar (2) further bounced back to the second place near its end of run, said position detecting element (4) sent secondary signal, and said control element (5) is controlled tower arm elevator (6) braking of said hoisting crane according to said secondary signal.
9. anti-hypsokinesis cylinder as claimed in claim 8; It is characterized in that; Said position detecting element (4) comprises first detector switch (41), second detector switch (42) and detects piece (43); Said first detector switch (41) and said second detector switch (42) are installed on said cylinder barrel (1), and said detection piece (43) is installed on said cylinder bar (2);
When said first detector switch (41) detected said detection piece (43), said first detector switch (41) sent said first signal;
Through after the schedule time, when said second detector switch (42) detected said detection piece (43), said second detector switch (42) sent said secondary signal.
10. anti-hypsokinesis cylinder as claimed in claim 9 is characterized in that the end of said cylinder barrel (1) is provided with mounting bracket, and said mounting bracket comprises the extension (7) that stretches out said cylinder barrel (1) end; Said first detector switch (41) is installed on the outer end of said extension (7), and said second detector switch (42) is installed on the inner of said extension (7).
11. a hoisting crane, luffing bracket assembly and principal arm before comprising; It is characterized in that said hoisting crane comprises also that like each described anti-hypsokinesis cylinder of claim 1 to 10 said anti-hypsokinesis cylinder one end is connected with said preceding luffing bracket assembly, the other end is connected with said principal arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010292707.6A CN102408073B (en) | 2010-09-25 | 2010-09-25 | Crane and anti-tipback cylinder thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010292707.6A CN102408073B (en) | 2010-09-25 | 2010-09-25 | Crane and anti-tipback cylinder thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102408073A true CN102408073A (en) | 2012-04-11 |
| CN102408073B CN102408073B (en) | 2014-04-09 |
Family
ID=45910480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010292707.6A Active CN102408073B (en) | 2010-09-25 | 2010-09-25 | Crane and anti-tipback cylinder thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102408073B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103552943A (en) * | 2013-11-11 | 2014-02-05 | 湖南中铁五新重工有限公司 | Safety device for preventing gantry crane boom from falling and retroverting |
| CN104832584A (en) * | 2014-05-22 | 2015-08-12 | 北汽福田汽车股份有限公司 | Anti-back-tipping damping system and dynamic compaction machine |
| CN105050934A (en) * | 2012-12-03 | 2015-11-11 | 蓬塞有限公司 | Crane |
| CN110589696A (en) * | 2019-09-19 | 2019-12-20 | 青岛海西重机有限责任公司 | Steel wire rope luffing jib loading boom anti-falling device and crane |
| CN112723203A (en) * | 2020-12-28 | 2021-04-30 | 中联重科股份有限公司 | Control method and device for anti-back-tilting oil cylinder of arm support and engineering machinery |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006011637A1 (en) * | 2006-03-14 | 2007-09-20 | Festo Ag & Co. | Pneumatic linear drive, has clamping unit connected with chamber such that it is prestressed against inner surface of space under exertion of force, if fluid pressure prevailing in chamber rises based on movement of displacement unit |
| CN201071853Y (en) * | 2007-08-06 | 2008-06-11 | 长沙中联重工科技发展股份有限公司 | Floating piston type oil storing cylinder used for caterpiller crane |
| CN101275597A (en) * | 2007-03-30 | 2008-10-01 | Smc株式会社 | Position-control mechanism for a single-action pneumatic cylinder |
| CN201166022Y (en) * | 2008-02-27 | 2008-12-17 | 长沙中联重工科技发展股份有限公司 | Hydraulic pressure accumulator oil cylinder for crane |
| CN201358973Y (en) * | 2009-03-06 | 2009-12-09 | 上海三一科技有限公司 | Oil storage type retroversion prevention oil cylinder for sub-arm fixing mast on crawler crane |
| CN201801334U (en) * | 2010-09-25 | 2011-04-20 | 徐州重型机械有限公司 | Crane and rear-tilting-preventing cylinder of the crane |
-
2010
- 2010-09-25 CN CN201010292707.6A patent/CN102408073B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006011637A1 (en) * | 2006-03-14 | 2007-09-20 | Festo Ag & Co. | Pneumatic linear drive, has clamping unit connected with chamber such that it is prestressed against inner surface of space under exertion of force, if fluid pressure prevailing in chamber rises based on movement of displacement unit |
| CN101275597A (en) * | 2007-03-30 | 2008-10-01 | Smc株式会社 | Position-control mechanism for a single-action pneumatic cylinder |
| CN201071853Y (en) * | 2007-08-06 | 2008-06-11 | 长沙中联重工科技发展股份有限公司 | Floating piston type oil storing cylinder used for caterpiller crane |
| CN201166022Y (en) * | 2008-02-27 | 2008-12-17 | 长沙中联重工科技发展股份有限公司 | Hydraulic pressure accumulator oil cylinder for crane |
| CN201358973Y (en) * | 2009-03-06 | 2009-12-09 | 上海三一科技有限公司 | Oil storage type retroversion prevention oil cylinder for sub-arm fixing mast on crawler crane |
| CN201801334U (en) * | 2010-09-25 | 2011-04-20 | 徐州重型机械有限公司 | Crane and rear-tilting-preventing cylinder of the crane |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105050934A (en) * | 2012-12-03 | 2015-11-11 | 蓬塞有限公司 | Crane |
| CN103552943A (en) * | 2013-11-11 | 2014-02-05 | 湖南中铁五新重工有限公司 | Safety device for preventing gantry crane boom from falling and retroverting |
| CN104832584A (en) * | 2014-05-22 | 2015-08-12 | 北汽福田汽车股份有限公司 | Anti-back-tipping damping system and dynamic compaction machine |
| CN110589696A (en) * | 2019-09-19 | 2019-12-20 | 青岛海西重机有限责任公司 | Steel wire rope luffing jib loading boom anti-falling device and crane |
| CN112723203A (en) * | 2020-12-28 | 2021-04-30 | 中联重科股份有限公司 | Control method and device for anti-back-tilting oil cylinder of arm support and engineering machinery |
| CN112723203B (en) * | 2020-12-28 | 2022-08-05 | 中联重科股份有限公司 | Control method and device for anti-back-tilting oil cylinder of arm support and engineering machinery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102408073B (en) | 2014-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201801334U (en) | Crane and rear-tilting-preventing cylinder of the crane | |
| CN102039791B (en) | Vehicle body dip angle adjusting unit, oil gas suspension mechanism and mobile crane | |
| CN201647863U (en) | Back-tilting prevention device of tower arm and crane comprising same | |
| CN102408073B (en) | Crane and anti-tipback cylinder thereof | |
| RU2641390C2 (en) | Device, method and application versions for useful load control | |
| EP2253577B1 (en) | Compressible stop member for use on a crane | |
| CN107207203B (en) | The guide-rail brake of hydraulic booster | |
| CN104502011B (en) | A kind of multi-rope winder steel wire rope tension monitoring device | |
| CN103274314B (en) | Wave compensating device of oceanic crane | |
| CN108716371B (en) | Compensation function reverse test device of drill string heave compensation system and control method thereof | |
| US4593885A (en) | Portable balanced motion compensated lift apparatus | |
| CN102190257B (en) | A tower arm rear anti-tip device and a crane containing the device | |
| CA1093058A (en) | System for active compensation of unwanted relative movements, preferably during disposition of load (cargo) | |
| CN206668636U (en) | A kind of positive displacement heave compensation hydraulic system and heave compensation Lift-on/Lift-off System | |
| CN103523684B (en) | Hoisting coupling device with cooperation of multiple cranes and detection method | |
| CN102979075A (en) | Dynamic compaction machine | |
| CN202148109U (en) | Multifunctional simulation test system for mining elevators | |
| CN102874694B (en) | Hoisting crane and super lifting device thereof | |
| CN102424330B (en) | Crane and hook take-up system and method thereof | |
| CN202322242U (en) | Rotary type derrick operating vehicle | |
| CN210795553U (en) | Hoisting hydraulic system for straight-arm lorry-mounted crane | |
| CN201116268Y (en) | Novel hoist steel wire rope compacting mechanism | |
| CN201458630U (en) | Pneumatic swing line device of dispatch winch | |
| CN210117160U (en) | Compensation device for maintaining a predefinable defined position of a load | |
| CN204569193U (en) | A kind of bank bridge crane lifting mechanism and the bank bridge hoisting crane with it |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |