CN202089711U - Back-inclination preventing buffer device for arm support - Google Patents
Back-inclination preventing buffer device for arm support Download PDFInfo
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- CN202089711U CN202089711U CN 201120202052 CN201120202052U CN202089711U CN 202089711 U CN202089711 U CN 202089711U CN 201120202052 CN201120202052 CN 201120202052 CN 201120202052 U CN201120202052 U CN 201120202052U CN 202089711 U CN202089711 U CN 202089711U
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- jib
- cylinder
- hypsokinesis
- shock absorber
- master cylinder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/88—Safety gear
- B66C23/92—Snubbers or dashpots for preventing backwards swinging of jibs, e.g. in the event of cable or tackle breakage
Abstract
The utility model discloses a back-inclination preventing buffer device for an arm support. The back-inclination preventing buffer device comprises an actuating cylinder (10), a damping control system (40) and a field generator, wherein the actuating cylinder (10) comprises a master cylinder body (20), a piston (21), a piston chamber and a piston rod (25); the piston chamber is divided into a rod chamber (22) and a non-rod chamber (23) by the piston (21); a damping channel (24) for communicating the two chambers is arranged between the rod chamber (22) and the non-rod chamber (23); the damping control system (40) is connected to the arm support and the actuating cylinder (10), and calculates the present optimal back-inclination buffering power of the arm support according to the impact parameter information; and the field generator is arranged on the actuating cylinder (10). According to the back-inclination preventing buffer device, the optimal buffering power of the buffer device can be calculated before a lifting arm is overturned, the buffer power is regulated in a real-time manner according to the quick response of reversible phase-change fluid when the lifting beam is overturned, and the control is precision, so that the buffer device can meet the requirements of back-inclination buffer treatment of the arm support under different working conditions.
Description
Technical field
The utility model relates to the change damping device, in particular to the anti-hypsokinesis shock absorber of a kind of jib.
Background technology
The medium-and-large-sized truss arm of construction machinery and equipment, box arm are because its slenderness ratio is big, and distortion significantly can be regarded flexible body as under local function.In loading procedure, the flexible body storage elastic potential energy that deforms gradually; When unloading suddenly, high vibration takes place in jib under the driving of elastic potential energy, bigger for the elevation angle, and for example the elevation angle reaches the jib about 80 degree, and elastic potential energy discharges even might drive jib integral body tumbles.
Jib is under unexpected discharged impact effect, to in rigidity rotation, follow the vibration of self, acute variation all takes place in mode of motion complexity, jib corner, cireular frequency, angular acceleration in time, cushions at different exercise parameters and can design different shock absorbers.Existing shock absorber can be divided into rigidity buffering and damping buffering two classes, wherein the rigidity buffering to as if the jib corner, as spring bumper, damping buffering to liking the jib cireular frequency, as water bumper.
But no matter be which kind of shock absorber, its damping characteristics is all fixed, and makes cushion effect uncontrollable, a little less than the comformability to operating mode, therefore is not suitable for providing the optimization cushion effect for large-scale jib under different operating modes.
The utility model content
The utility model aims to provide the anti-hypsokinesis shock absorber of a kind of jib, can control the damping of reversible transition liquid by the impact parameter information that damped control system obtained, before tumbling, crane arm calculates the optimum cushion effect of shock absorber, and cushion effect is adjusted in the quick response by reversible transition liquid in real time when tumbling, control accurately can be satisfied the jib hypsokinesis buffered under the different operating modes.
To achieve these goals,, provide a kind of jib to prevent the hypsokinesis shock absorber, having comprised according to an aspect of the present utility model: cylinder, be arranged between jib bearing and the jib, comprising: Master cylinder body; Plunger shaft is positioned at Master cylinder body; Piston is arranged in the plunger shaft, and plunger shaft is divided into rod chamber and rodless cavity; Damp channel is arranged on the plunger shaft outside, and is communicated with rod chamber and rodless cavity, also comprises: field generator is arranged on the cylinder, according to the field intensity in the external control signal change cylinder that receives; Damped control system, input end is connected on the impact effect part, mouth is connected on the field generator, be prevented the external control signal of jib hypsokinesis according to the impact parameter information that receives, according to the field intensity of external control signal controlling field producer, wherein the impact effect part is jib or is arranged on piston rod on the piston; In rod chamber, rodless cavity and damp channel, be built-in with reversible transition liquid.
Further, an end of cylinder is fixedly installed on the jib bearing, and the other end is connected to jib or extends towards jib, or an end of cylinder is fixedly installed on the jib, and the other end is connected to the jib bearing or extends towards the jib bearing.
Further, damped control system comprises: sensor-based system is connected to jib, and obtains impact parameter information; Damping controller receives the impact parameter information that sensor-based system obtained, and according to impact parameter information output control signal; Power amplifying system, input end connects damping controller, and mouth is connected to cylinder, is delivered to cylinder after the control signal amplification with damping controller output.
Further, damped control system also comprises anti-tipping control parameter list, anti-tipping control parameter list is connected to damping controller, and built-in anti-tipping controlled variable, and damping controller extracts corresponding anti-tipping controlled variable according to the impact parameter information that receives from anti-tipping control parameter list.
Further, damped control system also comprises the jib computing module of tumbling, and is arranged between sensor-based system and the damping controller, receives the impact parameter information that sensor-based system obtains, and calculates anti-tipping controlled variable in real time, is delivered to damping controller.
Further, field generator is the coil that produces controllable magnetic field in cylinder, perhaps produces the paired electrode of controllable electric field in cylinder.
Further, reversible transition liquid is magnetic flow liquid, and field generator is arranged on the Master cylinder body periphery, and cylinder also comprises: secondary cylinder, be fixedly installed on the outer wall of Master cylinder body, and two ends have secondary cylinder cap; Excitation coil is arranged in the cylinder barrel of secondary cylinder, and is connected with damped control system, and damp channel passes the center of excitation coil; The brake coil box is adjacent to the interior casing wall setting of cylinder barrel of secondary cylinder, and has the excitation coil mounting groove, and excitation coil is arranged in the excitation coil mounting groove, and damp channel runs through the brake coil box along its length.
Further, two ports of damp channel and rod chamber and rodless cavity bonded assembly lay respectively at the end position of rod chamber and rodless cavity.
Further, secondary cylinder has a plurality of, evenly is provided with along the outer wall circumferential direction of Master cylinder body.
Further, reversible transition liquid is electrorheological fluid, and field generator is arranged on the Master cylinder body periphery, and cylinder also comprises: secondary cylinder, be fixedly installed on the outer wall of Master cylinder body, and two ends have secondary cylinder cap; Anodal cover and negative pole cover are close to the inner wall of cylinder of secondary cylinder respectively and are oppositely arranged, and anodal cover and negative pole cover are connected to damped control system respectively, and overlap and negative pole forms damp channel between overlapping at positive pole.
Further, positive pole is set on the inner wall of cylinder of secondary cylinder inboard, and negative pole is set on the inner wall of cylinder in the secondary cylinder outside, and two ports of damp channel and rod chamber and rodless cavity bonded assembly lay respectively at the end position of rod chamber and rodless cavity.
Further, secondary cylinder has a plurality of, evenly is provided with along the outer wall circumferential direction of Master cylinder body.
According to the technical solution of the utility model, the anti-hypsokinesis shock absorber of jib comprise cylinder and with cylinder bonded assembly damped control system, damped control system is determined control signal according to the impact parameter information of obtaining from jib, control the damping of reversible transition liquid then in real time according to control signal, thereby adjust the cushion effect size of the anti-hypsokinesis shock absorber of jib, make it can be in the cushion stroke of appointment discharge the elastic potential energy that stores optimum cushion effect is provided, avoid jib to fracture or tumble boom system.Because damped control system can obtain impact parameter information in real time, and calculate the anti-tipping needed cushion effect of jib in real time according to the impact parameter information of being obtained, realized real-time control and adjustment by the high response speed of reversible transition liquid to the jib cushion effect, the damping control needs under the different operating modes have been satisfied, better adaptability, and improved energy utilization efficiency.Damping controller can directly extract the control corresponding parameter information by impact parameter information from anti-tipping control parameter list, also can draw controlled variable information in real time according to the impact parameter information calculations by the jib computing module of tumbling, controlled variable is obtained various informative, and is alternative good.
Description of drawings
The accompanying drawing that constitutes a part of the present utility model is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used to explain the utility model, does not constitute improper qualification of the present utility model.In the accompanying drawings:
Fig. 1 shows according to the scheme of installation of anti-hypsokinesis shock absorber of the present utility model on hoisting crane;
Fig. 2 shows the structural representation according to the anti-hypsokinesis shock absorber of first embodiment of the present utility model;
Fig. 3 shows the structural representation according to the anti-hypsokinesis shock absorber of second embodiment of the present utility model;
Fig. 4 shows the first damped control system schematic diagram according to the anti-hypsokinesis shock absorber of embodiment of the present utility model; And
Fig. 5 shows the second damped control system schematic diagram according to the anti-hypsokinesis shock absorber of embodiment of the present utility model.
The specific embodiment
Hereinafter will describe the utility model with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
Reversible transition liquid is mainly magnetic flow liquid or electrorheological fluid at present, with the magnetic flow liquid is example, this reversible transition liquid is to be scattered in the damping that forms in the lower carrier fluid of permeability by tiny soft magnetic particles can change the suspension liquid with controllable rheology characteristic with externally-applied magnetic field, under the effect of magnetic field, magnetic flow liquid can be realized by Newtonian fluid in the time to semi-solid reversible variation at Millisecond; After removing magnetic field, magnetic flow liquid can recover ortho states again.Similarly, electrorheological fluid is under effect of electric field, and reversible transition liquid becomes solid-state from liquid state.
According to embodiment of the present utility model, the anti-hypsokinesis shock absorber of jib includes plunger shaft, piston is divided into rod chamber and two parts of rodless cavity with plunger shaft, rod chamber and rodless cavity are communicated with by damp channel, in plunger shaft and damp channel, be provided with reversible transition liquid, change the damping of reversible transition liquid by the thing phase state of adjusting reversible transition liquid, thereby the buffer action power of piston rod is adjusted, it is satisfied use needs.Reversible transition liquid is the mutually variable liquid of thing such as magnetic flow liquid or electrorheological fluid.
The cylinder 10 of the anti-hypsokinesis shock absorber of jib is arranged between the jib bearing 60 and jib 61 of hoisting crane, and for example, it can be fixedly mounted on the jib bearing 60, also can be fixedly mounted on the jib 61.Cylinder 10 comprises plunger shaft and piston, piston rod.
Field generator is arranged on the cylinder 10, it can be arranged on the periphery of Master cylinder body 20, also can be arranged in the casing wall of Master cylinder body 20, perhaps be arranged on other any position that can adjust the field intensity in the cylinder 10 according to external control signal, by outward sign the field intensity of field generator is adjusted, thereby adjust the field intensity in the cylinder 10, and then change the thing phase state that is arranged on the reversible transition liquid in the cylinder 10, reach the liquid-damped purpose of change reversible transition.
Extremely shown in Figure 5 as Fig. 1, be installed on the jib bearing 60 of hoisting crane according to anti-hypsokinesis shock absorber of the present utility model, damped control system 40 is gathered impact parameter information by the sensor-based system 41 that is installed on the crane arm support 61, and the output control signal, the cushion effect size of the anti-hypsokinesis shock absorber of control.Generally anti-hypsokinesis shock absorber does not contact with jib 61, and in jib 61 luffing motion processes, anti-hypsokinesis shock absorber calculates under the current generation unloading situation suddenly the cushion effect size that shock absorber should provide in real time by gathering impact parameter information; When unloading suddenly takes place, jib 61 is tumbled backward, impact anti-hypsokinesis shock absorber, the damping of the reversible transition liquid 30 of the big minor adjustment shock absorber of cushion effect that calculates before the shock absorber basis makes anti-hypsokinesis shock absorber that the optimum cushion effect that crane arm fractures and tumbles that prevents that calculates before is provided.
Sensor-based system 41 also can be directly installed on the piston rod 25, after jib discharges elastic potential energy, piston rod 25 is impacted, make piston rod 25 produce transient acceleration, sensor-based system 41 will pass to anti-hypsokinesis shock absorber from the transient acceleration that piston rod 25 collects, anti-hypsokinesis shock absorber calculates according to acceleration information, draw and prevent the jib required suitable controlled variable that fractures or tumble, and be translated into external control signal, pass to field generator, thereby the field intensity of controlling field producer, and then the damping of control reversible transition liquid 30, make anti-hypsokinesis shock absorber output through calculating the optimum cushion effect of gained, the elastic potential energy of jib is effectively cushioned.
As Fig. 2, Fig. 4 and shown in Figure 5, according to first embodiment of the present utility model, anti-hypsokinesis shock absorber comprises cylinder 10 and damped control system 40.Cylinder 10 comprises Master cylinder body 20, is provided with master cylinder cover 27 at the two ends of Master cylinder body 20, makes Master cylinder body 20 form the leak free plunger shaft.Master cylinder body 20 is fixedly installed on the jib bearing 60 of hoisting crane, and by the strut bar that the support from hoisting crane stretches out obliquely Master cylinder body 20 is formed support, makes the sense of motion of Master cylinder body 20 towards jib.In axial direction be provided with piston 21 in the plunger shaft of Master cylinder body 20, an end of piston 21 is provided with piston rod 25, and the master cylinder cover 27 that piston rod 25 passes Master cylinder body 20 1 ends stretches out outside the Master cylinder body 20, and is arranged on the assault route of jib.Cooperation place at piston rod 25 and master cylinder cover 27 is provided with seal ring 26, seal ring 26 is arranged between piston rod 25 and the master cylinder cover 27, on the one hand plunger shaft is formed good sealing function, can effectively reduce piston rod 25 on the other hand in motion process and the rubbing effect between the master cylinder cover 27, prolong the service life of piston rod 25 and master cylinder cover 27, improve the serviceability of piston 21.Piston 21 is divided into rod chamber 22 and rodless cavity 23 with plunger shaft, and along with the motion of piston 21, the volume of rod chamber 22 and rodless cavity 23 also constantly takes place by corresponding the variation.
Be set with secondary cylinder 50 on the outer wall of Master cylinder body 20, secondary cylinder 50 comprises secondary cylinder barrel and is arranged on the secondary cylinder cap 51 at secondary cylinder barrel two ends that secondary cylinder barrel is the cylinder-like structure that two ends have opening, cooperates with the secondary cylinder cap 51 at two ends, forms the fully enclosed cavity.On the outer casing wall of secondary cylinder 50 and Master cylinder body 20 cooperation places, have the structure that matches with the outer shell wall construction of Master cylinder body 20, fit tightly on the outer casing wall of Master cylinder body 20 with the outer casing wall that guarantees secondary cylinder 50.Preferably, in a unshowned embodiment, on Master cylinder body 20, have the location structure of locating pair cylinder 50 positions, on Master cylinder body 20, accurately install so that guarantee secondary cylinder 50.Preferably, cylinder cap 51 is made by the material with separated magnetic effect, can prevent effectively that magnetic force from leaking.Be provided with brake coil box 53 in this closed cavity, brake coil box 53 is adjacent to the inwall setting of secondary cylinder 50, thereby obtains good location.The periphery wall of brake coil box 53 is provided with the excitation coil mounting groove, and excitation coil 52 is installed in the excitation coil mounting groove.Excitation coil 52 has many groups, and is evenly arranged in the excitation coil mounting groove along the axial direction of piston rod 21.Brake coil box 53 simple in structure, easy to process, and position by secondary cylinder 50 easily, thereby excitation coil 52 is also formed good location structure, make excitation coil 52 obtain good magnetic induction effect, cost is lower, function admirable.Preferably, secondary cylinder 50 has a plurality of, evenly is provided with along the outer wall circumferential direction of Master cylinder body 20, can guarantee the damping structure stress balance of the magnetic flow liquid that piston 21 is born in the course of the work, and performance is more reliable.
In brake coil box 53, be provided with damp channel 24.Damp channel 24 in axial direction runs through whole brake coil box 53, and passes brake coil box 53 settings of the center of respectively organizing excitation coil 52.Two ends end position at rod chamber 22 and rodless cavity 23 is provided with the damp channel 24 that extends along Master cylinder body 20 radial direction, damp channel 24 passes a side tube-wall of Master cylinder body 20 and secondary cylinder 50, and extend in the brake coil box 53, be connected with the damp channel 24 of axial direction, form the passage that is communicated with rod chamber 22 and rodless cavity 23.In plunger shaft and damp channel 24, all be full of reversible transition liquid 30, in the present embodiment, this reversible transition liquid 30 is magnetic flow liquid, by changing size by the electric current in the excitation coil 52, excitation coil 52 formed magnetic flow are changed, thereby make its state of adjusting magnetic flow liquid, change the damping of magnetic flow liquid, the damping that acquisition needs, thus change is to the cushion effect of jib.
Between jib 61 and cylinder 10, be connected with damped control system 40, damped control system 40 obtains impact parameter information from jib 61, then according to the definite control signal that will export of the impact parameter information of obtaining, export the control signal of determining to cylinder 10 at last, realization is the real-time control of the damping of magnetic flow liquid to the reversible transition liquid 30 in the cylinder 10, thereby can adjust the buffer action power of the anti-hypsokinesis shock absorber of jib in real time, the convenient jib of eliminating apace has good comformability owing to the elastic potential energy that unloading is discharged.Impact parameter information comprises jib corner, speed, acceleration/accel, wind speed and hangs any one or arbitrarily several combination in the load carrying ability.
See also Fig. 4, damped control system 40 includes sensor-based system 41, damping controller 42 and power amplifying system 43.Sensor-based system 41 is connected to jib, have a plurality of sensors, obtain a plurality of different impact parameter information on the jib 61, and these impact parameter information are passed to damping controller 42, damping controller 42 is after receiving these impact parameter information that come from sensor-based system 41, determine and the output control signal according to these impact parameter information, power amplifying system 43 comprises power amplifier, input end is connected to damping controller 42, mouth is connected to the excitation coil 52 of cylinder 10, the control signal that damping controller 42 is exported is delivered to cylinder 10 after amplifying, change the size of passing through the electric current in the excitation coil 52 by control signal, thereby control the buffer action power of cylinder 10 in real time.
When the input end of damped control system 40 is connected on the piston rod 25 of cylinder 10, after jib 61 discharges elastic potential energys and piston rod 25 is impacted, sensor-based system 41 obtains impact parameter information from piston rod 25, acceleration/accel etc. for example, then the impact parameter information of obtaining is passed to damping controller 42, damping controller 42 is after receiving these impact parameter information that come from sensor-based system 41, determine and the output control signal according to these impact parameter information, power amplifying system 43 is delivered to cylinder 10 after control signal is amplified, and the thing phase state by control signal control magnetic flow liquid, thereby control the buffer action power of cylinder 10 in real time.
Obtaining of control signal can obtain by anti-tipping control parameter list is set.Also include anti-tipping control parameter list 44 in damped control system 40, the with good grounds different impact parameter information of anti-tipping control parameter list 44 stored are by empirical equation or other the anti-tipping controlled variable that computing formula obtained.Anti-tipping control parameter list 44 is connected to damping controller 42, when damping controller 42 receives impact parameter information from sensor-based system 41 after, from anti-tipping control parameter list 44, directly transfer cooresponding anti-tipping controlled variable according to impact parameter information, then these anti-tipping controlled variable are converted to control signal, through being sent to the field generator on the cylinder 10 after the amplification of amplification system, the field intensity of the field generator of cylinder 10 is controlled in real time.
Obtaining of control signal can also while real-time online account form obtain.In damped control system 40, include the jib computing module 45 of tumbling, this jib computing module 45 of tumbling is arranged between sensor-based system 41 and the damping controller 42, receiving sensor-based system 41 after the impact parameter information that jib obtained, obtain the anti-tipping controlled variable under the current impact parameter information condition according to being arranged on the computing formula (can be empirical equation) that jib tumbles in the computing module 45, the anti-tipping controlled variable that will calculate then is delivered to damping controller 42, by damping controller 42 anti-tipping controlled variable is converted to external control signal, and is delivered to cylinder 10.
When jib was tumbled, jib drive piston 21 moved right in Master cylinder body 20, the magnetic flow liquid in the compression Master cylinder body 20, and magnetic flow liquid provides cushion effect by magnetic flow liquid for piston 21 through the rod chamber 22 of damp channel 24 inflow Master cylinder bodies 20; Damped control system 40 detects the impact parameter information that sensor-based systems 41 are obtained on jib 61 or the piston rod 25 in real time; electric current on the control excitation coil 52; and then the magnetic-field intensity that produced of control excitation coil 52; adjust the thing phase state of magnetic flow liquid by adjusting magnetic-field intensity; the magnetic flow liquid of the damp channel 24 that is arranged in excitation coil 52 encirclements is changed to semi-solid state gradually by Newtonian fluid; thereby the magnetorheological fluid damp in the damp channel 24 is constantly increased; until the adjusting requirement of satisfying external control signal; magnetic flow liquids in rod chamber 22 and the rodless cavity 23 are because the state variation of the magnetic flow liquid in the damp channel 24 and can't free-flowing; thereby reach the damping of magnetic flow liquid in control and the adjusting damp channel 24; form the purpose of effective buffering for the elastic potential energy of institute's release from jib 61; jib 61 is formed protection, prevent that it from tumbling or fractureing.
Also an end of piston rod 25 can be fixedly installed on the jib bearing 60 of hoisting crane, then Master cylinder body 20 is arranged on movably on the strut bar that stretches out obliquely from the support of hoisting crane, and makes the sense of motion of the sense of motion of Master cylinder body 20 towards jib 61.Sensor-based system 41 is connected on the Master cylinder body 20 or on the jib 61, after jib 61 discharges elastic potential energy, Master cylinder body 20 is impacted, sensor-based system 41 carries out analytical calculation with the other parts that the impact parameter information of obtaining is sent to damped control system 40, obtain anti-tipping controlled variable information, and be converted to external control signal, be sent to field generator, control action by damped control system 40, field intensity to field generator is controlled, and under the mating reaction of piston rod 25 and Master cylinder body 20, regulates the damping of reversible transition liquid 30, motion forms optimum buffer action to jib to make anti-hypsokinesis shock absorber, thereby prevents that jib 61 from fractureing or tumbling.
As Fig. 3, Fig. 4 and shown in Figure 5, according to second embodiment of the present utility model, the anti-hypsokinesis shock absorber of jib comprises cylinder 10 and damped control system 40.Cylinder 10 comprises Master cylinder body 20, is provided with master cylinder cover 27 at the two ends of Master cylinder body 20, makes Master cylinder body 20 form the leak free plunger shaft.In the plunger shaft of Master cylinder body 20, in axial direction be provided with piston 21, one end of piston 21 is provided with piston rod 25, the master cylinder cover 27 that piston rod 25 passes Master cylinder body 20 1 ends stretches out outside the Master cylinder body 20, and is arranged on the assault route of jib 61 towards jib 61 directions.Cooperation place at piston rod 25 and master cylinder cover 27 is provided with seal ring 26, seal ring 26 is arranged between piston rod 25 and the master cylinder cover 27, on the one hand plunger shaft is formed good sealing function, can effectively reduce piston rod 25 on the other hand in motion process and the rubbing effect between the master cylinder cover 27, prolong the service life of piston rod 25 and master cylinder cover 27, improve the serviceability of piston 21.Piston 21 is divided into rod chamber 22 and rodless cavity 23 with plunger shaft, and along with the motion of piston 21, the volume of rod chamber 22 and rodless cavity 23 also constantly takes place by corresponding the variation.
Be set with secondary cylinder 50 on the outer wall of Master cylinder body 20, secondary cylinder 50 comprises secondary cylinder barrel and is arranged on the secondary cylinder cap 51 at secondary cylinder barrel two ends, and forms the fully enclosed cavity.Preferably, cylinder cap 51 and secondary cylinder cylinder barrel are made by the material with insulating effect, can prevent effectively that electric current from leaking, and causes potential safety hazard.Be relatively set with anodal cover 54 and negative pole cover 55 on the inner tube wall of secondary cylinder barrel, anodal cover 54 and negative pole cover 55 all are close to the inner wall of cylinder setting of secondary cylinder 50, and are connected to damped control system 40 respectively.Between positive pole cover 54 and negative pole cover 55, form by damp channel 24.
In the present embodiment, anodal cover 54 is arranged on the inner wall of cylinder of secondary cylinder 50 inboards, and negative pole cover 55 is arranged on the inner wall of cylinder in secondary cylinder 50 outsides.This structure can effectively improve the safety performance of the anti-hypsokinesis shock absorber in the present embodiment.Two ends end position at rod chamber 22 and rodless cavity 23 is provided with the damp channel 24 that extends along Master cylinder body 20 radial direction, damp channel 24 passes a side tube-wall of Master cylinder body 20 and secondary cylinder 50, and extend to formed damp channel 24 between anodal cover 54 and the negative pole cover 55, rod chamber 22 and rodless cavity 23 are communicated with.Preferably, secondary cylinder 50 has a plurality of, evenly is provided with along the outer wall axial direction of Master cylinder body 20, can guarantee the damping structure stress balance of the magnetic flow liquid that piston 21 is born in the course of the work, and performance is more reliable.
Be full of reversible transition liquid 30 in plunger shaft and damp channel 24, in the present embodiment, this reversible transition liquid 30 is electrorheological fluid.Be applied to voltage or electric current on anodal cover 54 and the negative pole cover 55 by change, change the damping of the electrorheological fluid in the damp channel 24, make it satisfy the needs of jib 61 anti-hypsokinesis.Between jib 61 and cylinder 10, be connected with damped control system 40, damped control system 40 obtains impact parameter information from jib 61 or piston rod 25, then according to the definite control signal that will export of the impact parameter information of obtaining, export the control signal of determining to field generator at last, regulate the field intensity of field generator, thereby regulating reversible transition liquid 30 is the thing phase state of electrorheological fluid, realization is to the real-time control of the damping of the electrorheological fluid in the cylinder 10, thereby can adjust the buffer action power of the anti-hypsokinesis shock absorber of jib in real time, the convenient jib of eliminating apace has good comformability owing to the elastic potential energy that unloading is discharged.Impact parameter information comprises jib corner, speed, acceleration/accel, wind speed and hangs any one or arbitrarily several combination in the load carrying ability.
The structure and the principle of work thereof of the damped control system 40 among the structure of damped control system 40 and action principle thereof and first embodiment are similar, no longer describe in detail here.
When jib was tumbled, jib drive piston 21 moved right in Master cylinder body 20, the electrorheological fluid in the compression Master cylinder body 20, and electrorheological fluid flows in the rod chamber 22 of Master cylinder body 20 through damp channel 24, provides cushion effect by electrorheological fluid for piston 21; Damped control system 40 detects the impact parameter information that sensor-based systems 41 are obtained on jib 61 or the piston rod 25 in real time, curtage on anodal cover 54 of control and the negative pole cover 55 influences field generator, the electric field intensity of field generator is changed, the thing of electrorheological fluid that is positioned at the damp channel 24 of electric field influence scope also changes mutually thereupon, thus the damping of electrorheological fluid in the control damp channel 24.
Can be installed on the hoisting crane by various suitable modes according to anti-hypsokinesis shock absorber of the present utility model, for example, can one of them be fixedly mounted on the jib bearing 60 with the Master cylinder body 20 of cylinder 10 and piston rod 25, contacting with jib 61 first or extend in addition towards jib 61, perhaps one of them is fixedly mounted on the jib 61 with the Master cylinder body 20 of cylinder 10 and piston rod 25, contacting with jib bearing 61 first or extend towards jib bearing 61 in addition.When the Master cylinder body 20 that adopts cylinder 10 is fixedly mounted on the jib bearing 61, piston rod 25 is during with mounting means that jib 61 contacts, and the end of 61 uses of jib and piston rod 25 is kept in touch; When the Master cylinder body 20 that adopts cylinder 10 is fixedly mounted on the jib bearing 61, the piston rod 25 of cylinder 10 is when mounting means that jib 61 extends, the terminal of piston rod 25 will not contact by jib 61 usually, have only when jib 61 turns to certain position and just can contact with the end of piston rod 25, and piston rod 25 impacted, this moment, the jib anti-squat system just can play buffer action.Other two kinds of mounting meanss therewith roughly the same repeat no more.
From above description, as can be seen, the utility model the above embodiments have realized following technique effect: the anti-hypsokinesis shock absorber of jib comprise cylinder and with cylinder bonded assembly damped control system, damped control system is determined control signal according to the impact parameter information of obtaining from jib, control the damping of reversible transition liquid then in real time according to control signal, thereby adjust the cushion effect size of the anti-hypsokinesis shock absorber of jib, make it can be in the cushion stroke of appointment discharge the elastic potential energy that stores optimum cushion effect is provided, avoid jib to fracture or tumble boom system.Because damped control system can obtain impact parameter information in real time, and calculate the anti-tipping needed cushion effect of jib in real time according to the impact parameter information of being obtained, realized real-time control and adjustment by the high response speed of reversible transition liquid to the jib cushion effect, the damping control needs under the different operating modes have been satisfied, better adaptability, and improved energy utilization efficiency.Damping controller can directly extract the control corresponding parameter information by impact parameter information from anti-tipping control parameter list, also can draw controlled variable information in real time according to the impact parameter information calculations by the jib computing module of tumbling, controlled variable is obtained various informative, and is alternative good.
The above is a preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (12)
1. a jib is prevented the hypsokinesis shock absorber, comprising:
Cylinder (10) is arranged between jib bearing (60) and the jib (61), comprising:
Master cylinder body (20);
Plunger shaft is positioned at described Master cylinder body (20);
Piston (21) is arranged in the described plunger shaft, and described plunger shaft is divided into rod chamber (22) and rodless cavity (23);
Damp channel (24) is arranged on the described plunger shaft outside, and is communicated with described rod chamber (22) and described rodless cavity (23), it is characterized in that, also comprises:
Field generator is arranged on the described cylinder (10), changes the interior field intensity of described cylinder (10) according to the external control signal that receives;
Damped control system (40), input end is connected on the impact effect part, mouth is connected on the described field generator, be prevented the described external control signal of described jib (61) hypsokinesis according to the impact parameter information that receives, control the field intensity of described field generator according to described external control signal, wherein said impact effect part is described jib (61) or is arranged on piston rod (25) on the described piston (21);
In described rod chamber (22), described rodless cavity (23) and described damp channel (24), be built-in with reversible transition liquid (30).
2. jib according to claim 1 is prevented the hypsokinesis shock absorber, it is characterized in that, an end of described cylinder (10) is fixedly installed on the described jib bearing (60), and the other end is connected to described jib (61) or extends towards described jib (61), or
One end of described cylinder (10) is fixedly installed on the described jib (61), and the other end is connected to described jib bearing (60) or extends towards described jib bearing (60).
3. jib according to claim 1 is prevented the hypsokinesis shock absorber, it is characterized in that, described damped control system (40) comprising:
Sensor-based system (41) is connected to described jib, and obtains described impact parameter information;
Damping controller (42) receives the described impact parameter information that described sensor-based system (41) is obtained, and exports described control signal according to described impact parameter information;
Power amplifying system (43), input end connect described damping controller (42), and mouth is connected to described cylinder (10), are delivered to described cylinder (10) after the described control signal amplification with described damping controller (42) output.
4. jib according to claim 3 is prevented the hypsokinesis shock absorber, it is characterized in that, described damped control system (40) also comprises anti-tipping control parameter list (44), described anti-tipping control parameter list (44) is connected to described damping controller (42), and built-in anti-tipping controlled variable, described damping controller (42) extracts corresponding described anti-tipping controlled variable according to the described impact parameter information that receives from described anti-tipping control parameter list (44).
5. jib according to claim 3 is prevented the hypsokinesis shock absorber, it is characterized in that, described damped control system (40) also comprises the jib computing module (45) of tumbling, be arranged between described sensor-based system (41) and the described damping controller (42), receive the described impact parameter information that described sensor-based system (41) obtains, and calculate anti-tipping controlled variable in real time, be delivered to described damping controller (42).
6. according to the anti-hypsokinesis shock absorber of each described jib in the claim 1 to 5, it is characterized in that described field generator is the coil that produces controllable magnetic field in described cylinder (10), perhaps in cylinder (10), produce the paired electrode of controllable electric field.
7. jib according to claim 6 is prevented the hypsokinesis shock absorber, it is characterized in that, described reversible transition liquid (30) is magnetic flow liquid, and described field generator is arranged on the periphery of described Master cylinder body (20), and described cylinder (10) also comprises:
Secondary cylinder (50) is fixedly installed on the outer wall of described Master cylinder body (20), and two ends have secondary cylinder cap (51);
Excitation coil (52) is arranged in the cylinder barrel of described secondary cylinder (50), and is connected with described damped control system (40), and described damp channel (24) passes the center of described excitation coil (52);
Brake coil box (53), be adjacent to the interior casing wall setting of cylinder barrel of described secondary cylinder (50), and have the excitation coil mounting groove, and described excitation coil (52) is arranged in the described excitation coil mounting groove, and described damp channel (24) runs through described brake coil box (53) along its length.
8. jib according to claim 7 is prevented the hypsokinesis shock absorber, it is characterized in that described damp channel (24) and described rod chamber (22) and two ports of described rodless cavity (23) bonded assembly lay respectively at the end position of described rod chamber (22) and described rodless cavity (23).
9. jib according to claim 7 is prevented the hypsokinesis shock absorber, it is characterized in that, described secondary cylinder (50) has a plurality of, evenly is provided with along the outer wall circumferential direction of described Master cylinder body (20).
10. jib according to claim 6 is prevented the hypsokinesis shock absorber, it is characterized in that, described reversible transition liquid (30) is electrorheological fluid, and described field generator is arranged on the periphery of described Master cylinder body (20), and described cylinder (10) also comprises:
Secondary cylinder (50) is fixedly installed on the outer wall of described Master cylinder body (20), and two ends have secondary cylinder cap (51);
Anodal cover (54) and negative pole cover (55), be close to the inner wall of cylinder of described secondary cylinder (50) respectively and be oppositely arranged, described anodal cover (54) and described negative pole cover (55) are connected to described damped control system (40) respectively, and form described damp channel (24) between described anodal cover (54) and described negative pole cover (55).
11. jib according to claim 10 is prevented the hypsokinesis shock absorber, it is characterized in that, described anodal cover (54) is arranged on the inboard described inner wall of cylinder of described secondary cylinder (50), described negative pole cover (55) is arranged on the described inner wall of cylinder in described secondary cylinder (50) outside, and described damp channel (24) and described rod chamber (22) and two ports of described rodless cavity (23) bonded assembly lay respectively at the end position of described rod chamber (22) and described rodless cavity (23).
12. jib according to claim 11 is prevented the hypsokinesis shock absorber, it is characterized in that, described secondary cylinder (50) has a plurality of, evenly is provided with along the outer wall circumferential direction of described Master cylinder body (20).
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201120202052 CN202089711U (en) | 2011-06-15 | 2011-06-15 | Back-inclination preventing buffer device for arm support |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201120202052 CN202089711U (en) | 2011-06-15 | 2011-06-15 | Back-inclination preventing buffer device for arm support |
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| CN202089711U true CN202089711U (en) | 2011-12-28 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102275841A (en) * | 2011-06-15 | 2011-12-14 | 长沙中联重工科技发展股份有限公司 | Anti-back tilting buffer device for arm support |
| CN102635106A (en) * | 2012-04-27 | 2012-08-15 | 中国一冶集团有限公司 | Dynamic compaction buffer damping method of crawler crane |
| CN102678813A (en) * | 2012-05-24 | 2012-09-19 | 中联重科股份有限公司 | Buffer unit and boom rearward tilting prevention device provided with buffer unit |
| CN103626049A (en) * | 2013-11-20 | 2014-03-12 | 中联重科股份有限公司 | Lifting arm support of engineering machine and engineering machine |
| CN103641005A (en) * | 2013-11-25 | 2014-03-19 | 无锡起岸重工机械有限公司 | Steel wire rope luffing electric arm rack anti-collision device |
| WO2022002963A1 (en) * | 2020-06-29 | 2022-01-06 | Itrec B.V. | Heavy lift crane |
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2011
- 2011-06-15 CN CN 201120202052 patent/CN202089711U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102275841A (en) * | 2011-06-15 | 2011-12-14 | 长沙中联重工科技发展股份有限公司 | Anti-back tilting buffer device for arm support |
| WO2012171353A1 (en) * | 2011-06-15 | 2012-12-20 | 中联重科股份有限公司 | Cantilever retroversion-proof cushioning apparatus |
| CN102635106A (en) * | 2012-04-27 | 2012-08-15 | 中国一冶集团有限公司 | Dynamic compaction buffer damping method of crawler crane |
| CN102635106B (en) * | 2012-04-27 | 2015-05-20 | 中国一冶集团有限公司 | Dynamic compaction buffer damping method of crawler crane |
| CN102678813A (en) * | 2012-05-24 | 2012-09-19 | 中联重科股份有限公司 | Buffer unit and boom rearward tilting prevention device provided with buffer unit |
| CN102678813B (en) * | 2012-05-24 | 2013-06-26 | 中联重科股份有限公司 | Buffer unit and boom rearward tilting prevention device provided with buffer unit |
| CN103626049A (en) * | 2013-11-20 | 2014-03-12 | 中联重科股份有限公司 | Lifting arm support of engineering machine and engineering machine |
| CN103641005A (en) * | 2013-11-25 | 2014-03-19 | 无锡起岸重工机械有限公司 | Steel wire rope luffing electric arm rack anti-collision device |
| WO2022002963A1 (en) * | 2020-06-29 | 2022-01-06 | Itrec B.V. | Heavy lift crane |
| NL2025943B1 (en) * | 2020-06-29 | 2022-03-04 | Itrec Bv | heavy lift crane |
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Address after: 410013 Yuelu District, Hunan, silver basin Road, No. 361, No. Patentee after: Zoomlion Heavy Industry Science & Technology Development Co., Ltd. Address before: 410013 Yuelu District, Hunan, silver basin Road, No. 361, No. Patentee before: Chang Sha Zoomlion Heavy Industry Science & Technology Development Co., Ltd. |
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