CN104555776A - Winch mechanism for engineering machinery and engineering machinery - Google Patents
Winch mechanism for engineering machinery and engineering machinery Download PDFInfo
- Publication number
- CN104555776A CN104555776A CN201410834686.4A CN201410834686A CN104555776A CN 104555776 A CN104555776 A CN 104555776A CN 201410834686 A CN201410834686 A CN 201410834686A CN 104555776 A CN104555776 A CN 104555776A
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- lower releasing
- releasing hoister
- hoisting mechanism
- reel
- hoister
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- 230000007246 mechanism Effects 0.000 title claims abstract description 76
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 61
- 239000010959 steel Substances 0.000 claims abstract description 61
- 239000000725 suspension Substances 0.000 claims abstract description 10
- 238000010276 construction Methods 0.000 claims description 16
- 238000004132 cross linking Methods 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 10
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 4
- 238000000034 method Methods 0.000 description 18
- 230000008569 process Effects 0.000 description 16
- 239000003638 chemical reducing agent Substances 0.000 description 8
- 230000009467 reduction Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/26—Rope, cable, or chain winding mechanisms; Capstans having several drums or barrels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/12—Driving gear incorporating electric motors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D2700/00—Capstans, winches or hoists
- B66D2700/01—Winches, capstans or pivots
- B66D2700/0183—Details, e.g. winch drums, cooling, bearings, mounting, base structures, cable guiding or attachment of the cable to the drum
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
The invention discloses a hoisting mechanism for engineering machinery and the engineering machinery, wherein the tail end of a suspension arm of the engineering machinery is provided with a fixed pulley, the hoisting mechanism comprises a hoisting winch, a lowering winch and a working weight, the hoisting winch is arranged on a base of the engineering machinery, a steel wire rope of the hoisting winch bypasses the fixed pulley and is wound into a multi-multiplying-power steel wire rope assembly to be connected with the lowering winch, and the lowering winch is connected with the working weight through a single-multiplying-power steel wire rope. The hoisting mechanism comprises a hoisting winch and a lowering winch which are connected in series, the hoisting is controlled by the hoisting winch, and the lowering of the load is controlled by the lowering winch. Through the technical scheme, the hoisting mechanism has two functions of slow heavy-load lifting and high-speed lowering, continuous impact operation can be realized, and the hoisting mechanism is simple in structure and low in cost.
Description
Technical field
The present invention relates to engineering machinery field, particularly, relate to a kind of hoisting mechanism for construction machinery and equipment and construction machinery and equipment.
Background technology
Large-scale impulse machine relies on high-altitude release load impacting Ground Operation, and the efficiency of operation and power are the important indicators weighing impulse machine performance, and the mode of existing raising operating efficiency mainly relies on free-falling body elevator to realize automation continuous working.Such as, the free-falling body winch out tape that some crawler-type multifunctional machine all adopts braking capacity larger is carried and is transferred, its basic structure is that a free-falling body elevator is by single multiplying power steel rope connection work counterweight, wherein free-falling body elevator is arranged on rotating platform of crane, single multiplying power steel rope is walked around crane jib point and is connected with work counterweight, utilize reductor in free-falling body winch to amplify moment of torsion lifting work counterweight during lifting, when transferring, utilize oil-immersed multi-disk brake in free-falling body winch to control the pulling force of single multiplying power steel rope.
Realize band for adopting free-falling body winch and carry the hoisting crane of transferring operation, this free-falling body winch coordinates with single multiplying power steel rope to be born heavy duty at a slow speed and promotes and transfer two kinds of functions with high speed.For heavily loaded enhanced feature at a slow speed, moment of torsion is amplified owing to lacking conventional hoist many multiplying powers steel rope, the motor power of free-falling body winch is compared with the large several times of the winch that hoists of conventional hoist, and huge discharge, high pulling torque motor are expensive, significantly increase the cost of hoisting crane; For high speed lowering function, free-falling body drg is generally contact-type frictional braking, braking force changes with temperature, contact conditions and changes, the Controlling model setting up braking force is very difficult, being difficult to the accurate control realizing braking force, can only doing switch control rule when braking at a high speed, be more big changes because the every subjob of impact force action is formed, the very high speed transferred at a high speed, switch control rule is difficult to realize accurately holding braking time, often because braking in advance causes hoisting crane to produce great vibrations.
Summary of the invention
The object of this invention is to provide a kind of hoisting mechanism for construction machinery and equipment, this hoisting mechanism can utilize simple structure to realize band year and hoists at a slow speed and transfer at a high speed.
To achieve these goals, the invention provides a kind of hoisting mechanism for construction machinery and equipment, the arm end of this project machinery is provided with fixed pulley, and wherein, this hoisting mechanism comprises the elevator that hoists be sequentially connected in series, lower releasing hoister and work counterweight,
Wherein, the described elevator that hoists is arranged on the pedestal of described construction machinery and equipment, the steel rope of the described elevator that hoists is walked around described fixed pulley and is wound in many multiplying powers steel wire rope component and is connected with described lower releasing hoister, and described lower releasing hoister is connected with described work counterweight by single multiplying power steel rope.
Preferably, described hoisting mechanism also comprises movable pulley, and this movable pulley is connected with described lower releasing hoister, described in the hoist steel rope of elevator walk around described fixed pulley and described movable pulley to form described many multiplying powers steel wire rope component.
Preferably, described movable pulley is provided with suspension hook, described lower releasing hoister comprises support, and this support is connected with this suspension hook the reel maintenance level keeping described lower releasing hoister by balance plate.
Preferably, described hoisting mechanism also comprises counterweight, and this counterweight is connected with described lower releasing hoister by first single multiplying power steel rope, and described counterweight is connected with described work counterweight by second single multiplying power steel rope.
Preferably, the reel of described lower releasing hoister is double crosslinking drum, this double crosslinking drum comprises cylindrical shell and middle baffle plate, this middle baffle plate is arranged on the outer peripheral face of the midway location of the central axial direction along described cylindrical shell of this cylindrical shell, the grooving that the outer peripheral face of the described cylindrical shell of described middle baffle plate both sides is arranged around to contrary and be arranged symmetrically with, described first single multiplying power steel rope is two, and these two described first single multiplying power steel ropes are wrapped on the outer peripheral face of the described cylindrical shell of described middle baffle plate both sides respectively symmetrically.
Preferably, described double crosslinking drum also comprises the right baffle-plate and right baffle plate that are arranged on described cylindrical shell two ends, and middle baffle plate is connected with and leftly connects rope device and right company restricts device.
Preferably, described lower releasing hoister also comprises drive motor, wherein,
Described drive motor drives the reel of described lower releasing hoister to rotate, and described lockable mechanism is used for braking the reel of described lower releasing hoister.
Preferably, described lower releasing hoister also comprises eddy current retarder, and this eddy current retarder is connected to slow down to the reel of described lower releasing hoister with the output shaft of described drive motor.
The present invention also provides a kind of construction machinery and equipment, and wherein, this project machinery comprises hoisting mechanism of the present invention.
Hoisting mechanism of the present invention comprises hoist elevator and the lower releasing hoister that are connected in series, by the rolling control lifting that hoists, carries transfer by transferring rolling control band.By technique scheme, this hoisting mechanism has heavy duty at a slow speed and promotes and transfer two kinds of functions at a high speed, and can realize bump operation, and this hoisting mechanism structure is simple, and cost is lower.
Other features and advantages of the present invention are described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification sheets, is used from explanation the present invention, but is not construed as limiting the invention with detailed description of the invention one below.In the accompanying drawings:
Fig. 1 is the schematic diagram of the hoisting mechanism according to prior art;
Fig. 2 is the schematic diagram of hoisting mechanism according to the preferred embodiment of the present invention;
Fig. 3 is the schematic diagram descending releasing hoister according to the preferred embodiment of the present invention;
Fig. 4 is the schematic diagram of the lower releasing hoister according to another preferred implementation of the present invention.
Description of reference numerals
1 fixed pulley; The steel wire rope component of multiplying power more than 2; 3 first single multiplying power steel ropes; 4 second single multiplying power steel ropes; 5 movable pulleys; 6 suspension hooks; 10 hoist elevator; 20 times releasing hoisters; 21,21 ' cylindrical shell; 22 middle baffle plate; 23 supports; 24 balance plates; 25 ' right baffle-plate; 26 ' right baffle plate; 27,27 ' left company restricts device; 28,28 ' right company restricts device; 30 work counterweights; 31,31 ' drive motor; 32 eddy current retarders; 34 retracing springs; 35 lock pins; 36 locking motors; 37 locking rods; 32 ' Parking Brake; 33 ' planetary reduction gear wheel; 34 ' eddy current retarder; 35 ' oil-immersed multi-disk brake; 40 counterweights
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
In the present invention, when not doing contrary explanation, the noun of locality of use should by reference to the accompanying drawings shown in direction under direction or hoisting mechanism actual working state carry out proper interpretation.
The invention provides a kind of hoisting mechanism for construction machinery and equipment, the arm end of this project machinery is provided with fixed pulley 1, and wherein, this hoisting mechanism comprises the elevator 10 that hoists, lower releasing hoister 20 and the work counterweight 30 that are sequentially connected in series,
Wherein, the described elevator 10 that hoists is arranged on the pedestal of described construction machinery and equipment, the described steel rope hoisting elevator 10 is walked around described fixed pulley and is wound in many multiplying powers steel wire rope component 2 and is connected with described lower releasing hoister 20, and described lower releasing hoister 20 is connected with described work counterweight 30 by single multiplying power steel rope.
According to technical scheme of the present invention, the elevator 10 that hoists is mainly used to hoisting heavy at a slow speed.Usually, this elevator 10 that hoists is arranged on the pedestal of hoisting crane, the steel rope of elevator 10 of hoisting walks around fixed pulley 1 that arm end arranges to downward-extension, and utilize movable pulley to be wound in many multiplying powers steel wire rope component 2 of the prior art, this many multiplying powers steel wire rope component 2 connects lower releasing hoister 20, and this lower releasing hoister 20 is directly by two single multiplying power steel rope connection work counterweights 30.That is, in this hoisting mechanism, together with the elevator that hoists, lower releasing hoister are connected in series with work counterweight.
When hoisting mechanism upwards lifts by crane, the drive motor braking of lower releasing hoister 20 is to lock single multiplying power steel rope, thus keep relative distance between lower releasing hoister 20 and work counterweight 30, the electric machine rotation rope closing of the elevator 10 that hoists thus promote lower releasing hoister 20 and work counterweight 30 by many multiplying powers steel wire rope component 2.In order to increase the hoisting capacity of the elevator 10 that hoists, the elevator 10 that hoists is in the operating mode of low-speed heave-load when being with and carrying lifting, and the speed reduction gearing hoisted in elevator 10 adopts larger reduction ratio to increase the moment of torsion promoted usually.Preferably, described hoisting mechanism also comprises movable pulley 5, and this movable pulley 5 is connected with described lower releasing hoister 20, described in the hoist steel rope of elevator 10 walk around described fixed pulley 1 and described movable pulley 5 to form described many multiplying powers steel wire rope component 2.Hoisting after the steel rope of elevator 10 walks around fixed pulley 1 utilizes the structures such as movable pulley to be co-operatively wound in many multiplying powers steel wire rope component 2, amplifies moment of torsion lifting work counterweight 30 further by many multiplying powers steel rope.Particularly, those skilled in the art can arrange this many multiplying powers construction of wire rope according to actual needs adaptively, and Fig. 2 only exemplarily illustrates a kind of many multiplying powers construction of wire rope, not as restriction of the present invention.
After work counterweight 30 is raised to predetermined altitude, hoist elevator 10 drive motor braking with Locking stylet rope, thus the relative position that maintenance hoists between elevator 10 and lower releasing hoister 20, now hoisting mechanism is in high-order lock-out state, and in the process, the drive motor of lower releasing hoister 20 remains lockup state.
When hoisting mechanism band carry transfer time, hoist elevator 10 drive motor keep braking mode with Locking stylet rope, the lockable mechanism of lower releasing hoister 20 removes the locking to the reel of lower releasing hoister 20, the reel of lower releasing hoister 20 can rotate, work counterweight 30 accelerates to transfer under gravity, and now hoisting mechanism is in band and carries the state transferred.
After work counterweight 30 kiss the earth, the current vortex retarder 32 of lower releasing hoister 20 controls the reel deceleration of lower releasing hoister 20, now hoisting mechanism is in the state of landing and braking, until the reel low speed rotation of lower releasing hoister 20, lockable mechanism is to the reel locking of lower releasing hoister 20, and when the drive motor of the elevator 10 that hoists also is in braking mode, now hoisting mechanism is in low level lock-out state.
As can be seen here, according to hoisting mechanism of the present invention, only will hoist elevator 10 and lower releasing hoister 20 is cascaded by design cleverly, just can respectively by hoist elevator 10 and lower releasing hoister 20 to two processes realizing heavy-duty low-speed and promote and underloading high speed is transferred, not only carry in lifting process at band and provide enough moments of torsion, when also ensuring work counterweight 30 kiss the earth, there is enough large speed.
Hoisting mechanism of the present invention comprises hoist elevator and the lower releasing hoister that are connected in series, by the rolling control lifting that hoists, carries transfer by transferring rolling control band.By technique scheme, this hoisting mechanism has heavy duty at a slow speed and promotes and transfer two kinds of functions at a high speed, and can realize bump operation, and this hoisting mechanism structure is simple, and cost is lower.
Preferably, described hoisting mechanism also comprises movable pulley 5, and this movable pulley 5 is connected with described lower releasing hoister 20, described in the hoist steel rope of elevator 10 walk around described fixed pulley 1 and described movable pulley 5 to form described many multiplying powers steel wire rope component 2.More preferably, described movable pulley 4 is provided with suspension hook 6, described lower releasing hoister 20 comprises support 23, and this support 23 is connected with this suspension hook 6 the reel maintenance level making described lower releasing hoister 20 by balance plate 24.
The entirety of lower releasing hoister 20 is connected with this balance plate 24 by support 23.In order to ensure the reel maintenance level of lower releasing hoister 20, this balance plate 24 is preferably triangular plate as shown in Figure 2, it is more preferably equicrural triangle plate, the symmetrical angle place of this equicrural triangle two is connected with the both sides of the support 23 of lower releasing hoister 20 respectively, and the drift angle place of this equicrural triangle is connected with suspension hook 6.Or, this balance plate 24 also can be chosen as other shapes according to the center-of-gravity position of lower releasing hoister 20 reality, its objective is when lower releasing hoister is sling by suspension hook 6 and balance plate 24, the reel of lower releasing hoister 20 keeps level, thus work counterweight 30 can be controlled better steadily transfer, and lower releasing hoister 20 is carried out band in an inclined state and carries and transfer and due to unstable and cause damaging, also can correspondingly can be avoided by above-mentioned preferred implementation.
Preferably, described hoisting mechanism also comprises counterweight 40, and this counterweight 40 is connected with described lower releasing hoister 20 by first single multiplying power steel rope 3, and described counterweight 40 is connected with described work counterweight 30 by second single multiplying power steel rope 4.
The effect of this counterweight 40 is after work counterweight 30 kiss the earth, still keeps the steel rope straight condition of lower releasing hoister 20, thus prevents the steel rope of lower releasing hoister 20 from occurring the confusion caused because of slack rope.Preferably, namely first single multiplying power steel rope 3 described here refers to the steel rope of lower releasing hoister 20.
Particularly, hoisting mechanism band carry transfer time, this counterweight 40 falls jointly with work counterweight 30.And after work counterweight 30 kiss the earth, the spool velocity reduction that can control lower releasing hoister 20 preferably by retarder of lower releasing hoister 20, therefore counterweight 40 decelerated movement is downwards controlled, preferably, the maximum deceleration stroke of counterweight 40 is the length of second single multiplying power steel rope 4 between counterweight 40 and work counterweight 30.Further, when counterweight 40 not yet land and speed be decreased to close to 0 time, lockable mechanism locking stops the rotation to make the reel of lower releasing hoister 20, the now locking position of counterweight 40.
When the band of above-mentioned hoisting mechanism carries after decentralization process terminates, the drg of elevator 10 of hoisting is opened, hoist elevator 10 drive motor rotate put rope, and releasing hoister 20 moves downward under being controlled by many multiplying powers steel wire rope component 2, the drg of releasing hoister 20 is now descended also to open, the drive motor of lower releasing hoister 10 rotates rope closing, and the speed that lower releasing hoister 20 is transferred is preferably equal with the rope closing speed of first single multiplying power steel rope 3, until lower releasing hoister 20 is close to counterweight 40, this process is the process that hoisting mechanism of the present invention resets.
It should be noted that, in order to the state keeping between counterweight 40 and lower releasing hoister 20 first single multiplying power steel rope 3 to remain tensioning, this counterweight 40 is not preferably landed all the time in whole working process.
Preferably, the reel of described lower releasing hoister 20 is double crosslinking drum, this double crosslinking drum comprises cylindrical shell 21 and middle baffle plate 22, this middle baffle plate 22 is arranged on the outer peripheral face of the midway location of the central axial direction along described cylindrical shell 21 of this cylindrical shell 21, the grooving that the outer peripheral face of the described cylindrical shell 21 of described middle baffle plate 22 both sides is arranged around to contrary and be arranged symmetrically with, described first single multiplying power steel rope 3 is two, and these two described first single multiplying power steel ropes 3 are wrapped on the outer peripheral face of the described cylindrical shell 21 of described middle baffle plate 22 both sides respectively symmetrically.
As described above, that suspention is skyborne because lower releasing hoister 20 carries in the working process of transferring at band, if the roll of tape of lower releasing hoister 20 is carried in decentralization process be not in horizontality, reel tilts, wiring is made partially to enter angle to reel excessive, then be easy to produce rope skipping, disorder cable, mill rope, vibration etc. and damage lower releasing hoister 20, the decentralization process of work counterweight 30 also can be made steadily not occur shake, it is very important for therefore keeping the reel level of lower releasing hoister 20 to carry decentralization process for band.
In the preferred embodiment, this double crosslinking drum is driven to rotate at the drive motor of lower releasing hoister 20, two single multiplying power steel ropes 3 can symmetrically on the outer peripheral face of the cylindrical shell 21 of middle baffle plate 22 both sides of double crosslinking drum be wound around, thus avoid work counterweight 30 in dropping process, because the winding of steel rope on cylindrical shell 21 is asymmetric, cylindrical shell 21 that is that cause tilts.Preferably, described double crosslinking drum also comprises left device 27 and the right even rope device 28 of even restricting be arranged in middle baffle plate 22, preferably, the end of these two first single multiplying power steel ropes 3 is fixed on two respectively and even restricts on device 27 and 28 on described cylindrical shell 21, and is wound around symmetrically towards both sides.
The technical scheme of hoisting mechanism of the present invention is except providing the structure of mentioned above hoist elevator 10 and the series connection of lower releasing hoister 20, in order to adapt to the application of this structure, present invention also offers a kind of lower releasing hoister 20 of improvement, the control of band being carried to decentralization process can be more suitable for make this lower releasing hoister 20.
Preferably, described lower releasing hoister 20 also comprises drive motor 31 and lockable mechanism, wherein, described drive motor 31 drives the reel of described lower releasing hoister 20 to rotate, and described lockable mechanism is connected with the reel of described lower releasing hoister 20 and for carrying out locking to the reel of described lower releasing hoister 20.
The invention provides a kind of a kind of preferred implementation of lockable mechanism of lower releasing hoister 20, wherein, preferably, described lockable mechanism comprises retracing spring 34, lock pin 35, locking motor 36 and locking rod 37, described retracing spring 34 is connected with described lock pin 35, described locking motor 36 can drive described locking rod 37 straight-line motion between initial position and extended position, wherein
Described locking rod 37 is when described initial position, and described retracing spring 34 is in lock position, and described lock pin 35 is connected in the locking draw-in groove of the reel of described lower releasing hoister 20, and described lockable mechanism is in lockup state,
Described locking rod 37 promotes the locking draw-in groove that described lock pin 35 departs from the reel of described lower releasing hoister 20 when described extended position, described retracing spring 34 is in the unlocked position, and described lockable mechanism is in released state.
As shown in Figure 3, retracing spring 34 also can be able to be tension state for naturally extending in a latched condition.When locking motor 36 rotates forward, locking rod 37 extends outward to extended position, overcome the restoring force of retracing spring 34 and retracing spring 34 is stretched, locking rod 37 promotes lock pin 35 and outwards slides, until depart from the locking draw-in groove on the reel of lower releasing hoister 20, thus remove the locking to the reel of lower releasing hoister 20; When locking motor 36 reverses, locking rod 37 is inwardly retracted into initial position, locking rod 37 is separated with lock pin 35, lock pin 35 inwardly slides under the effect of the restoring force of retracing spring 34, when reel baffle plate draw-in groove forwards lock pin 34 place to, lock pin 35 gets back to the locking draw-in groove on the reel of lower releasing hoister 20, with the reel of releasing hoister under locking 20 in retracing spring 34 pulling force effect lower slider.
Wherein, this locking rod 37 is connected with locking motor 36, and the convert rotational motion of the output shaft of locking motor 36 can be become the straight-line motion of locking rod 37, wherein, the structure of this locking rod 37 can adopt any one mode be suitable for of prior art, and the present invention is not limited.
Described lower releasing hoister 20 also comprises eddy current retarder 32, and this eddy current retarder 32 is connected with described drive motor 31 and for slowing down to described drive motor 31.In the process that work counterweight 30 free-falling body falls, due to the excessive velocities of the counterweight 30 that works, if desired carry out deceleration to the reel of lower releasing hoister 20 and control lowering velocity, common drg is difficult to meet requirements, and drg also easily causes damage because friction drag is excessive.Eddy current retarder adopts automatically controlled contactless brake mode to brake, and be not only convenient to control, retro-speed is fast, and eddy current retarder inside does not also exist friction, not fragile.Therefore, in a preferred embodiment of the invention, can be braked by eddy current retarder when the reel High Rotation Speed of lower releasing hoister 20.
Particularly, instantly when the drive motor 31 of releasing hoister 20 rotates rope closing, locking motor 36 rotates forward, locking rod 37 is overhanging, overcome the pulling force of retracing spring 34, lock pin 35 is ejected the locking draw-in groove of the reel of lower releasing hoister 20, lockable mechanism unlocks, and now the reel of below elevator 20 is in solution braking mode.
When the counterweight 30 that works hovers over aerial, locking motor 36 reverses, and locking rod 37 bounces back, lock pin 35, under the effect of retracing spring 34 restoring force, enters locking draw-in groove, lockable mechanism locking, now descend the reel of releasing hoister 20 to be in braking mode, work counterweight 30 is suspended in the air.
When the counterweight 30 that works is transferred, lockable mechanism unlocks, the braking force of the reel to lower releasing hoister 20 can be regulated by the size of current of controlled vortex flow retarder 32 in the process that work counterweight 30 is transferred, thus regulate the rotating speed of the reel of lower releasing hoister 20, and then the lowering velocity of the work of control counterweight 30.After work counterweight 30 kiss the earth, increase the electric current of eddy current retarder 32, thus realized the decelerated movement of work counterweight 30 by eddy current retarder 32, and speed close to 0 time, by lockable mechanism locking.
Below a kind of preferred implementation of lockable mechanism of the present invention is only illustrated, and not as the restriction of the structure to lockable mechanism.And the brake mode of the present invention to the reel of lower releasing hoister 20 is more not limited to scheme mentioned above, the structure that in prior art, any one is suitable for may be used to brake the reel of lower releasing hoister 20 in the present invention.
Such as, as shown in Figure 4, preferably, described double crosslinking drum also comprises the right baffle-plate 25 ' and right baffle plate 26 ' that are arranged on described cylindrical shell 21 ' two ends, described right baffle-plate 25 ' is connected with left even rope device 27 ', described right baffle plate 26 ' is connected with right even rope device 28 '.Preferably, the end of these two first single multiplying power steel ropes 3 is fixed on left company on rope device 27 ' and right even rope device 28 ' symmetrically respectively on described cylindrical shell 21 ', and symmetrically towards mid-wrap.
Preferably, in another preferred implementation of the present invention, described lower releasing hoister 20 comprises drive motor 31 ', Parking Brake 32 ' and planetary reducer 33 ', wherein,
This planetary reducer 33 ' is connected with the reel of described lower releasing hoister 20 and drives described spool turns, described drive motor 31 ' drives described planetary reducer 33 ' to rotate, and described Parking Brake 32 ' is for braking the output shaft of described drive motor 31 '.Visible, Parking Brake 32 ' is for braking drive motor 31 '.More preferably, described lower releasing hoister 20 also comprises eddy current retarder 34 ', and this eddy current retarder 34 ' is connected to slow down to the reel of described lower releasing hoister 20 with the output shaft of described planetary reducer 33 '.
This planetary reducer 33 ' forms different reduction ratios by any one parts in fixing input shaft, output shaft and pinion carrier, lock line carrier, and drive motor 31 ' can drive the forward and reverse rotation of reel of lower releasing hoister 20 through planetary reducer 33 '; Locking input shaft, reel can be slow by eddy current retarder 34 ' through planetary reducer 33 ', braked to during low speed by oil-immersed multi-disk brake 35 '.
In the process that work counterweight 30 free-falling body falls, due to the excessive velocities of the counterweight 30 that works, if now need carry out brake snub to the reel of lower releasing hoister 20 and control lowering velocity, common drg is difficult to meet requirements, and drg also easily causes damage because friction drag is excessive.Eddy current retarder adopts electric current to carry out control for brake, and be not only convenient to control, retro-speed is fast, and eddy current retarder inside does not also exist friction, not fragile.Therefore, in a preferred embodiment of the invention, can be braked by eddy current retarder when the reel High Rotation Speed of lower releasing hoister 20.
Preferably, described lower releasing hoister 20 comprises oil-immersed multi-disk brake 35 ', and this oil-immersed multi-disk brake 35 ' is connected to brake the reel of described lower releasing hoister 20 with the output shaft of described planetary reducer 33 '.
More preferably, lower releasing hoister 20 comprises eddy current retarder 34 ' and oil-immersed multi-disk brake 35 ' simultaneously.Due to eddy current retarder 34 ' better performances under the brake condition of the reel High Rotation Speed to lower releasing hoister 20, be convenient to control, and it is unsatisfactory for the braking effect of the situation of the reel low speed rotation of lower releasing hoister 20, therefore with oil-immersed multi-disk brake 35 ' with the use of, utilize the reel of eddy current retarder 34 ' to lower releasing hoister 20 to carry out high speed braking, and the spool velocity reduction rear recycling oil-immersed multi-disk brake 35 ' of releasing hoister 20 carry out braking until stop the rotation instantly.
The present invention also provides a kind of construction machinery and equipment, and wherein, this project machinery comprises hoisting mechanism of the present invention.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible array mode.
In addition, also can carry out combination in any between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (10)
1. the hoisting mechanism for construction machinery and equipment, the arm end of this project machinery is provided with fixed pulley (1), it is characterized in that, this hoisting mechanism comprises the elevator that hoists (10) be sequentially connected in series, lower releasing hoister (20) and work counterweight (30)
Wherein, the described elevator that hoists (10) is arranged on the pedestal of described construction machinery and equipment, the steel rope of the described elevator that hoists (10) is walked around described fixed pulley (1) and is wound in many multiplying powers steel wire rope component (2) and is connected with described lower releasing hoister (20), and described lower releasing hoister (20) is connected with described work counterweight (30) by single multiplying power steel rope.
2. hoisting mechanism according to claim 1, it is characterized in that, described hoisting mechanism also comprises movable pulley (5), this movable pulley (5) is connected with described lower releasing hoister (20), described in the hoist steel rope of elevator (10) walk around described fixed pulley (1) and described movable pulley (5) to form described many multiplying powers steel wire rope component (2).
3. hoisting mechanism according to claim 2, it is characterized in that, described movable pulley (5) is provided with suspension hook (6), described lower releasing hoister (20) comprises support (23), and this support (23) is connected to make the reel of described lower releasing hoister (20) keep level with this suspension hook (6) by balance plate (24).
4. hoisting mechanism according to claim 1, it is characterized in that, described hoisting mechanism also comprises counterweight (40), this counterweight (40) is connected with described lower releasing hoister (20) by first single multiplying power steel rope (3), and described counterweight (40) is connected with described work counterweight (30) by second single multiplying power steel rope (4).
5. hoisting mechanism according to claim 4, it is characterized in that, the reel of described lower releasing hoister (20) is double crosslinking drum, this double crosslinking drum comprises cylindrical shell (21) and middle baffle plate (22), this middle baffle plate (22) is arranged on the outer peripheral face of the midway location of the central axial direction along described cylindrical shell (21) of this cylindrical shell (21), the grooving that the outer peripheral face of the described cylindrical shell (21) of described middle baffle plate (22) both sides is arranged around to contrary and be arranged symmetrically with, described first single multiplying power steel rope (3) is two, these two described first single multiplying power steel ropes (3) are wrapped on the outer peripheral face of described cylindrical shell (21) of described middle baffle plate (22) both sides respectively symmetrically.
6. hoisting mechanism according to claim 5, is characterized in that, described double crosslinking drum also comprises and is arranged on restrict device (27) and right company of middle baffle plate (22) upper left company and restricts device (28).
7. hoisting mechanism according to claim 1, is characterized in that, described lower releasing hoister (20) also comprises drive motor (31) and lockable mechanism, wherein,
Described drive motor (31) drives the reel of described lower releasing hoister (20) to rotate, and described lockable mechanism is connected with the reel of described lower releasing hoister (20) and for carrying out locking to the reel of described lower releasing hoister (20).
8. hoisting mechanism according to claim 7, it is characterized in that, described lockable mechanism comprises retracing spring (34), lock pin (35), locking motor (36) and locking rod (37), described retracing spring (34) is connected with described lock pin (35), described locking motor (36) can drive described locking rod (37) straight-line motion between initial position and extended position, wherein
Described locking rod (37) is when described initial position, described retracing spring (34) is in lock position, and described lock pin (35) is connected in the locking draw-in groove of the reel of described lower releasing hoister (20), described lockable mechanism is in lockup state
Described locking rod (37) promotes the locking draw-in groove that described lock pin (35) departs from the reel of described lower releasing hoister (20) when described extended position, described retracing spring (34) is in the unlocked position, and described lockable mechanism is in released state.
9. hoisting mechanism according to claim 7, it is characterized in that, described lower releasing hoister (20) also comprises eddy current retarder (32), and this eddy current retarder (32) is connected with described drive motor (31) and for slowing down to described drive motor (31).
10. a construction machinery and equipment, is characterized in that, this project machinery comprises the hoisting mechanism in claim 1-9 described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410834686.4A CN104555776B (en) | 2014-12-29 | 2014-12-29 | Winch mechanism for engineering machinery and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410834686.4A CN104555776B (en) | 2014-12-29 | 2014-12-29 | Winch mechanism for engineering machinery and engineering machinery |
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| Publication Number | Publication Date |
|---|---|
| CN104555776A true CN104555776A (en) | 2015-04-29 |
| CN104555776B CN104555776B (en) | 2016-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410834686.4A Active CN104555776B (en) | 2014-12-29 | 2014-12-29 | Winch mechanism for engineering machinery and engineering machinery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110127545A (en) * | 2019-05-14 | 2019-08-16 | 中成空间（深圳）智能技术有限公司 | Air film hanging device and pneumatic membrane building with it |
| CN114715787A (en) * | 2022-03-31 | 2022-07-08 | 湖南三一中型起重机械有限公司 | Crane with a movable crane |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2042456A (en) * | 1979-02-21 | 1980-09-24 | Gottwald Kg Leo | Telescopic crane |
| CN2333692Y (en) * | 1998-06-25 | 1999-08-18 | 亓德福 | Hoister |
| CN201024053Y (en) * | 2007-04-10 | 2008-02-20 | 山东丰汇设备技术有限公司 | Truss structure modular type super big mast type crane |
-
2014
- 2014-12-29 CN CN201410834686.4A patent/CN104555776B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2042456A (en) * | 1979-02-21 | 1980-09-24 | Gottwald Kg Leo | Telescopic crane |
| CN2333692Y (en) * | 1998-06-25 | 1999-08-18 | 亓德福 | Hoister |
| CN201024053Y (en) * | 2007-04-10 | 2008-02-20 | 山东丰汇设备技术有限公司 | Truss structure modular type super big mast type crane |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110127545A (en) * | 2019-05-14 | 2019-08-16 | 中成空间（深圳）智能技术有限公司 | Air film hanging device and pneumatic membrane building with it |
| CN114715787A (en) * | 2022-03-31 | 2022-07-08 | 湖南三一中型起重机械有限公司 | Crane with a movable crane |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104555776B (en) | 2016-10-26 |
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