CN102030273A - Tower crane, lifting mechanism thereof and method for leveling lifting mechanism - Google Patents
Tower crane, lifting mechanism thereof and method for leveling lifting mechanism Download PDFInfo
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- CN102030273A CN102030273A CN 201110001444 CN201110001444A CN102030273A CN 102030273 A CN102030273 A CN 102030273A CN 201110001444 CN201110001444 CN 201110001444 CN 201110001444 A CN201110001444 A CN 201110001444A CN 102030273 A CN102030273 A CN 102030273A
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- reel
- lifting
- hook
- driver train
- lifting mechanism
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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
- B66C23/18—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 specially adapted for use in particular purposes
- B66C23/26—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 specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail
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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
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/22—Control systems or devices for electric drives
- B66C13/23—Circuits for controlling the lowering of the load
Abstract
The invention discloses a tower crane, a lifting mechanism thereof and a method for leveling the lifting mechanism. The lifting mechanism comprises a first lifting unit, a second lifting unit and a lifting assembly, wherein the first lifting unit comprises a first driving mechanism (11) and a first drum (12); the first driving mechanism (11) drives the first drum (12) to rotate; the second lifting unit comprises a second driving mechanism (21) and a second drum (22); the second driving mechanism (21) drives the second drum (22) to rotate; and the lifting assembly is provided with a hook crossbeam (4) and a hook arranged below the hook crossbeam (4), wherein a first rope (31) on the first drum (12) extends out of the first drum (12) and is connected to one end of the hook crossbeam (4); and a second rope (32) on the second drum (22) extends out of the second drum (22) and is connected to the other end of the hook crossbeam (4). The lifting capacity of the lifting mechanism is greatly improved, the rope capacity is improved, and the lifting mechanism can adapt to conditions of high lifting height and heavy lifting weight.
Description
Technical field
The present invention relates to tower crane, relate in particular to the leveling method of a kind of tower crane and lifting mechanism thereof and this lifting mechanism.
Background technology
Tower crane is the material Transport Machinery of widespread use on the building ground.Present widely used tower crane great majority are that the single hook list drives, generally by a cover driver train, drive a reel as reducing motor and brake equipment, lift heavy is less, Rong Shengliang is lower, when driver train breaks down, not only need shut-down (breakdown) mainteance immediately, but also may could keep in repair by other engine installation lifting accessory.When promoting more heavy thing, need the driver train of the big specification of configuration, be unfavorable for improving the commonality of product.
Existing single two kinds of lifting mechanisms that lifting mechanism that lifting mechanism comprises that mainly " L " type is arranged and " ∏ " type arrange that drive.Wherein, in the lifting mechanism that " L " type is arranged, spool axis and driver train axis can be avoided the interference of driver train and reel at an angle of 90 like this, and drum diameter can be done greatly, become big and short reel; But because motor, reductor, drg and girder as are wanted reel centering all in the same side in the driver train, then for the equilibrium arm of hoisting crane, monolateral stand under load is more serious, unfavorable to the equilibrium arm stand under load, owing to tower height, brachium, in case misoperation is easy to unstability; To super large tower machine, the weight of motor, reductor, drg and girder is very heavy, so situation is even more serious.Simultaneously, it is subjected to structural limitations, and it is less to hold the rope amount, is difficult to surpass 1400 meters, can not meet requirements for the situation that lifting altitude height, hoisting capacity weigh.Lifting mechanism for " ∏ " type is arranged is subjected to structural limitations, and it holds the rope amount and is difficult to above 500 meters.
At present, in the art, in the lifting mechanism of tower crane, the lifting mechanism of " one " font layout, the lifting mechanism that " U " type is arranged etc. have appearred also.For the lifting mechanism that " one " font is arranged, because its motor, reductor, drg and reel in-line, total length is longer, concerning the Large Towers machine, is subjected to the restriction of equilibrium arm width, generally the structure that does not adopt this structure to decide and hoist.The lifting mechanism that " U " type is arranged, owing to be to drive reel also by two motors and reductor, therefore be also referred to as two lifting mechanisms that drive, its structure as shown in Figure 1, comprise first driver train 11, second driver train 21 and reel 2, wherein, first driver train 11 can comprise bonded assembly first motor 111 ' in turn, first drg 112 ' and first reductor 113 ', second driver train 21 ' can comprise bonded assembly second motor 211 ' in turn, second drg 212 ' and second reductor 213 ', first reductor 113 ' all is connected first driver train 11 ' with second reductor 213 ' with reel 2 ', second driver train 21 ' and reel 2 ' form " U " type.Its biggest advantage is when wherein motor or reductor break down, and mechanism still can normal operation, and this moment, the lift heavy of mechanism was 50% of a specified lift heavy; Its shortcoming is: the same structural limitations that is subjected to, and Rong Shengliang is difficult to above 1400 meters; When mechanism has only a machine operation, another set ofly just become a kind of load, therefore, the mechanism driving efficiency ratio is lower.
The lifting mechanism that the lifting mechanism that " ∏ " type is arranged and " U " type are arranged, these mechanisms can solve single lifting mechanism that drives with respect to the unbalanced defective of equilibrium arm, however its lift heavy, Rong Shengliang are still lower.
Summary of the invention
Technical matters to be solved by this invention provides the lifting mechanism that a kind of lift heavy is big, hold the higher tower crane of rope amount.
Another technical matters to be solved by this invention provides a kind of lifting mechanism of tower crane of the equilibrium arm balance with respect to tower crane.
Another technical matters to be solved by this invention provides and a kind ofly two drives, two reel and the reliable lifting mechanism of the tower crane of leveling.
Another technical matters to be solved by this invention provides a kind of leveling method of above-mentioned lifting mechanism.
For solving the problems of the technologies described above, according to an aspect of the present invention, provide a kind of lifting mechanism, comprising: first unit that hoists comprises first driver train and first reel, the rotation of first drive mechanism, first reel; Second unit that hoists comprises second driver train and second reel, the rotation of second drive mechanism, second reel; The lifting assembly has lifting beam with hook and the suspension hook that is arranged on the lifting beam with hook below, and wherein, first rope on first reel stretches out from first reel, is connected to an end of lifting beam with hook; Second rope on second reel stretches out from second reel, is connected to the other end of lifting beam with hook.
Further, first unit that hoists also comprises first angle pulley and first assembly pulley, is arranged in turn between first reel and the lifting assembly, and first rope is in turn through first angle pulley and first assembly pulley; Second unit that hoists also comprises second angle pulley and second assembly pulley, is arranged in turn between second reel and the lifting assembly, and second rope is in turn through second angle pulley and second assembly pulley.
Further, first configuration of cells that hoists is a L type structure, and wherein first driver train is connected with first reel axis normal ground, and second configuration of cells that hoists is a L type structure, and wherein second driver train vertically is connected with second spool axis; First driver train and second driver train parallel axes ground are provided with, and first reel and second reel are all between first driver train and second driver train.
Further, first reel is positioned at the rear side towards the lifting assembly of second reel, and first driver train extends to the side of second reel forward from the side of first reel, and second driver train extends rearward to the side of first reel from the side of second reel.
Further, first driver train comprises bonded assembly first motor, first drg and first reductor in turn; Second driver train comprises bonded assembly second motor, second drg and second reductor in turn.
Further, lifting mechanism is provided with control unit, controls the synchronous rotation of first drive mechanism, first reel and second drive mechanism, second reel, makes lifting beam with hook maintenance level.
Further, also comprise first detecting unit, first detecting unit comprises the horizontal detection instrument, is arranged on the lifting beam with hook, in order to the levelness of sensing lifting beam with hook, and forms the levelness signal; Control unit passes through levelness signal control first driver train and second driver train, and then controls the rotating speed of first reel and second reel.
Further, first detecting unit also comprises: wireless transmitter module, be positioned near the horizontal detection instrument, and the levelness signal that the horizontal detection instrument is formed sends; Wireless receiving module is positioned near the control unit, receives the levelness signal, and the levelness signal is transferred to control unit.
Further, also comprise second detecting unit, second detecting unit comprises: two sensor blocks are separately positioned on each angle pulley; Two are separately positioned on the support body that supports each angle pulley near switch, are equipped with sensor block, with the running velocity of sensing angle pulley, and form corresponding impulse singla; Control unit is controlled first driver train and second driver train by levelness signal or impulse singla, and then controls the rotating speed of first reel and second reel.
Further, also comprise the 3rd detecting unit, the 3rd detecting unit comprises: the levelness pointer is arranged on the lifting beam with hook, in order to the levelness of indication lifting beam with hook.
According to an aspect of the present invention, provide a kind of hoisting crane, comprised above-mentioned any lifting mechanism.
According to a further aspect of the invention, a kind of leveling method of above-mentioned lifting mechanism is provided, comprise: receive the levelness signal of the lifting beam with hook that the horizontal detection instrument detected, receive simultaneously be provided with on the angle pulley detect the impulse singla of the rotating speed of indicating angle pulley near switch; The rotating speed of two reels that link to each other with the two ends of lifting beam with hook by lifting rope respectively according to the control of levelness signal or impulse singla is with the level of adjustment lifting beam with hook.
Further,, comprise with the step of the level of adjusting lifting beam with hook according to the rotating speed of two reels of levelness signal control: level check degree signal data, whether correct with determined level degree signal; If the levelness signal is correct through verification, then according to the rotating speed of two reels of levelness signal control, to adjust the level of lifting beam with hook; If the levelness signal through the verification mal, is then controlled the rotating speed of two reels according to impulse singla, to adjust the level of lifting beam with hook.
Further, the step that receives the levelness signal of the lifting beam with hook that the horizontal detection instrument detected comprises: use wireless transmitter module that the levelness signal that the horizontal detection instrument forms is sent; Use wireless receiving module to receive the levelness signal, and the levelness signal is transferred to control unit.
The present invention has following beneficial effect:
1. comprise in the lifting mechanism of the present invention that two overlap the unit that hoists, every cover unit that hoists comprises cover driver train and a reel, two sets of cords on two reels are an end of connecting shackle crossbeam respectively, this makes the lift heavy ability of lifting mechanism increase greatly, Rong Shengliang increases, and can adapt to lifting altitude height, the heavy situation of hoisting capacity.In addition, when a cover hoists the unit et out of order need overhaul the time, the assembly pulley that lifting beam with hook and this cover are hoisted in the unit disassembles, and uses the another set of unit endure that hoists, and can't influence the use of tower machine.
2. in the lifting mechanism of the present invention, two unit that hoist all can be set to L shaped structure, each hoists in the unit, reel vertically is connected with driver train, two driver trains be arranged in parallel, two reels are between two driver trains, and more preferably, first driver train can be extended rearward to the side of second reel from the side of first reel, second driver train extends rearward to the side of first reel from the side of second reel, can form a symmetrical structure like this, make whole lifting mechanism with respect to the equilibrium arm symmetry, thereby make tower crane more stable.
3. can also comprise the horizontal detection instrument in the lifting mechanism of the present invention, this horizontal detection instrument can preferably use wireless transmitter module and wireless receiving module to send the levelness signal, and more preferably, can also comprise sensor block and the detecting unit of forming near switch, in order to detect the rope speed that send of two reels, detect the levelness of lifting beam with hook with these two kinds of signals, and then make lifting beam with hook maintenance level according to the rotating speed of two driver trains of levelness control of lifting beam with hook.
4. the leveling method of lifting mechanism of the present invention receives levelness signal and impulse singla simultaneously, can use impulse singla to come leveling at the levelness signal when verification makes a mistake, and has realized the reliable leveling to lifting mechanism.
Except purpose described above, feature and advantage, the present invention also has other purpose, feature and advantage.With reference to figure, the present invention is further detailed explanation below.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the plan structure scheme drawing according to the lifting mechanism of " U " type layout in the prior art;
Fig. 2 is the plan structure scheme drawing according to the lifting mechanism of the first embodiment of the present invention;
Fig. 3 is the main TV structure scheme drawing according to the lifting mechanism of the first embodiment of the present invention;
Fig. 4 is the structural representation according to the tower crane of the lifting mechanism of the first embodiment of the present invention;
Fig. 5 be according to lifting beam with hook in the lifting mechanism of the first embodiment of the present invention and on first detecting unit, the scheme drawing of the 3rd detecting unit;
Fig. 6 is the scheme drawing according to second detecting unit in the lifting mechanism of the first embodiment of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
As Fig. 2, Fig. 3 and shown in Figure 4, among the present invention lifting mechanism comprise first unit that hoists, unit and second that hoists, first unit pack that hoists is drawn together the rotation that first driver train 11 and first reel, 12, the first driver trains 11 drive first reel 12; Second unit that hoists comprises that second driver train 21 and second reel, 22, the second driver trains 21 drive the rotation of second reel 22.In addition, as shown in Figure 4 and Figure 5, the lifting assembly has lifting beam with hook 4 and is arranged on the suspension hook of lifting beam with hook 4 belows.As can be seen, first rope 31 on first reel 12 stretches out from first reel 12, is connected to an end of lifting beam with hook 4 from Fig. 3 and Fig. 4; Second rope 32 on second reel 22 stretches out from second reel 22, is connected to the other end of lifting beam with hook 4.
Be appreciated that, this two structures of overlapping the unit that hoists make the lift heavy ability of lifting mechanism increase greatly, Rong Shengliang increases, compare with the lifting mechanism of existing single driving lifting mechanism and existing " ∏ " type layout, the lifting mechanism that " U " type is arranged, because driver train and reel are two covers, thereby can adapt to lifting altitude height, the heavy situation of hoisting capacity.Specifically, owing to be that the two covers unit that independently hoists drives two ropes, two ropes pass through the two ends that lifting beam with hook 4 spurs suspension hooks more respectively then, therefore, every half of overlapping mechanism and only having born the specified lift heavy of tower crane, so concerning complete machine, it holds the rope amount and the lift heavy ability is doubled on the basis of original " L " type mechanism.In addition, when a cover hoists the unit et out of order need overhaul the time, the assembly pulley that lifting beam with hook and this cover are hoisted in the unit disassembles, and uses the another set of unit endure that hoists, and can't influence the use of tower machine.
In the present embodiment, as shown in Figure 3 and Figure 4, first unit that hoists also comprises first angle pulley 13 and first assembly pulley 14, be arranged in turn between first reel 12 and the lifting assembly, similarly, second unit that hoists also comprises second angle pulley 23 and second assembly pulley 24, is arranged in turn between second reel 22 and the lifting assembly.First rope 31 is in turn through first angle pulley 13 and first assembly pulley 14; Similarly, second rope 32 is in turn through second angle pulley 23 and second assembly pulley 24.
Preferably, as shown in Figure 2, following structure can be arranged in two unit that hoist: first configuration of cells that hoists is a L type structure, wherein first driver train 11 is connected with first reel, 12 axis normal ground, second configuration of cells that hoists is a L type structure, and wherein second driver train 21 is connected with second reel, 22 axis normal ground; First driver train 11 and second driver train, 21 parallel axes ground are provided with, and first reel 12 and second reel 22 are all between first driver train 11 and second driver train 21.Can form a symmetrical structure like this, make whole lifting mechanism with respect to equilibrium arm 8 (as shown in Figure 4) symmetry, thereby make tower crane more stable, avoid single problem that lifting mechanism causes whole crane destabilization easily that drives of the prior art.
More preferably, in the present embodiment, as in the birds-eye view of Fig. 2 as can be seen, first reel 12 is positioned at the rear side towards the lifting assembly of second reel 22, first driver train 11 extends to the side of second reel 22 forward from the side of first reel 12, second driver train 21 extends rearward to the side of first reel 12 from the side of second reel 22.Like this, two unit that hoist have surrounded a very compact and symmetrical structure, make tower crane more stable.
Preferably, first driver train 11 comprises bonded assembly first motor 111, first drg 112 and first reductor 113 in turn; Second driver train 21 comprises bonded assembly second motor 211, second drg 212 and second reductor 213 in turn.Wherein, first reductor 113 is connected with first reel 12, and second reductor is connected with second reel 22.
But, the structure of the two reels of two drivings, easy run-off the straight when hoisting heavy, so need to guarantee two independently linear velocity unanimities of the rope on the reel, to guarantee that just first reel 12 and second reel 22 synchronously rotate, guaranteeing the level of lifting beam with hook 4, otherwise, the potential safety hazard that can not be in relative level attitude in the suspension hook operational process and the lift heavy Slip Hook takes place can be caused.In the present embodiment, preferably, lifting mechanism is provided with control unit, controls first driver train 11 and drives the synchronous rotation that first reels 12 and second driver train 21 drive second reel 22, makes lifting beam with hook 4 maintenance levels.
More preferably, as shown in Figure 5, also comprise first detecting unit 5 according to the lifting mechanism of the first embodiment of the present invention, this first detecting unit 5 comprises horizontal detection instrument 51, be arranged on the lifting beam with hook 4,, and form the levelness signal in order to the levelness of sensing lifting beam with hook 4; The levelness signal that above-mentioned control unit is sent according to horizontal detection instrument 51 is controlled first driver train 11 and second driver train 21, particularly, in the present embodiment, for controlling the rotating speed of first motor 111 and second motor 211, and then control the rotating speed of first reel 11 and second reel 21.Just, by automatically controlled program setting, when the folding and unfolding amount error of judging two ropes according to the levelness signal surpasses the permissible value of suspension hook group deflection, electric-control system compensates the accumulated error of two original rope folding and unfoldings by the rotating speed of adjusting first motor 111 and second motor 211, makes suspension hook be returned to horizontality.Therefore suspension hook is in " dynamically " state of equilibrium all the time in motion process.
Because not only make reasonable line arrangement become very difficult by cable transmission leaning angle data (being the levelness signal), the transmission of long distance also can make sensor signal decay significantly, thereby has caused major safety risks.Thereby in the present embodiment, preferably, first detecting unit 5 also comprises: wireless transmitter module and wireless receiving module (not shown), and wherein, wireless transmitter module is positioned near the horizontal detection instrument, and the levelness signal that the horizontal detection instrument is formed sends; And wireless receiving module is positioned near the control unit, receives the levelness signal, and the levelness signal is transferred to control unit.Like this, just removed the difficulty of wiring from, and avoided the defective of signal attenuation in the cable transmission.
Yet, when distance long (more than the 200m) and signal are interfered situations such as data frame losing, distortion can appear with transmission over radio, sometimes horizontal detection instrument 51 also might be owing to self reason (use up as et out of order own, battery etc.) can't the detection level degree and send signal.At this moment, preferably, in the present embodiment, second detecting unit 7 can also be set in lifting mechanism, as shown in Figure 6, this second detecting unit 7 comprises: first sensor block 71, first near switch 73 and second sensor block 72, second near switch 74.Wherein, first sensor block 71 and second sensor block 72 are separately positioned on first angle pulley 13 and second angle pulley 23; First is separately positioned on the support body that supports first angle pulley 13 and second angle pulley 23 near switch 74 near switch 73 and second, be equipped with two sensor blocks, running velocity with the sensing angle pulley, and form corresponding impulse singla, that is to say, two form two group pulse signals respectively near switch, and this two group pulses signal has been indicated the speed of first rope 31 and second rope 32 respectively.
Control unit can be controlled first driver train 11 and second driver train 21 by levelness signal or impulse singla, and then controls the rotating speed of first reel 11 and second reel 21.Particularly, control unit can be in the leveling mode of the levelness signal of described transmission over radio above, with described here be auxilliary near switching pulse leveling mode.Horizontal detection instrument 51 directly obtains the information of the present horizontal situation of suspension hook, and the levelness signal sent to control unit (for example master control plc) by wireless mode, whether and the data of paired pulses leveling are simultaneously calibrated, for example come judgment data reliable by main control PLC through verification.Be subjected to situations such as the external interference data distort, frame losing when wireless data transmission, when just causing main control PLC in certain hour (can be provided with), can not receive valid data owing to factors such as distance, interference, carry out the pulse leveling according to the last data of revising near switch, when receiving actv. levelness signal data once more, when just the levelness signal of the leveling mode of the levelness signal of transmission over radio recovers, continue the leveling mode of the levelness signal of use transmission over radio again.Like this, it is accurate both to have brought into play wireless leveling system take off data, obtain the advantage of data stabilization again by pulse leveling mode, actv. remedied the gap that data disappearances takes place wireless leveling system when data are interfered, greatly improved accuracy, safety and reliability that double hook lifts suspension hook leveling in the use.
More preferably, as shown in Figure 5, in the present embodiment, lifting mechanism comprises that also the 3rd detecting unit 6, the three detecting units 6 comprise the levelness pointer, is arranged on the lifting beam with hook, in order to the levelness of indication lifting beam with hook.When causing levelness signal and impulse singla all can't receive owing to cause specific, the operator can pass through two driver trains of this levelness pointer manual intervention of range estimation, and makes suspension hook recover horizontality.
From being appreciated that above the present invention also provides a kind of tower crane, this tower crane is provided with any lifting mechanism mentioned above, thereby, this tower crane lift heavy ability increases greatly, and Rong Shengliang increases, and can adapt to lifting altitude height, the heavy situation of hoisting capacity.Whole tower crane is balance and stability more.
In addition, from above it is also understood that, the present invention also provides the leveling method of above-mentioned lifting mechanism, this method comprises: receive the levelness signal of the lifting beam with hook that the horizontal detection instrument detected, receive simultaneously be provided with on the angle pulley detect the impulse singla of the rotating speed of indicating angle pulley near switch; The rotating speed of two reels that link to each other with the two ends of lifting beam with hook by lifting rope respectively according to the control of this levelness signal or this impulse singla is with the level of adjustment lifting beam with hook.
This method has been guaranteed two independently linear velocity unanimities of the rope on the reel, thereby has guaranteed the level of lifting beam with hook 4, has avoided can not being in relative level attitude in the suspension hook operational process and potential safety hazard that the lift heavy Slip Hook takes place.
Preferably, the rotating speed of two reels that link to each other with the two ends of lifting beam with hook by lifting rope respectively according to this levelness signal and the control of this impulse singla comprises with the level of adjustment lifting beam with hook: level check degree signal data, and whether correct with determined level degree signal; If the levelness signal is correct through verification, then according to the rotating speed of two reels of levelness signal control, to adjust the level of lifting beam with hook; If the levelness signal through the verification mal, is then controlled the rotating speed of two reels according to impulse singla, to adjust the level of lifting beam with hook.
More preferably, the step that receives the levelness signal of the lifting beam with hook that the horizontal detection instrument detected comprises: use wireless transmitter module that the levelness signal that the horizontal detection instrument forms is sent; Use wireless receiving module to receive the levelness signal, and the levelness signal is transferred to control unit.
In addition, when causing levelness signal and impulse singla all can't receive owing to cause specific, the operator can pass through two driver trains of this levelness pointer manual intervention of range estimation, and makes suspension hook recover horizontality.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. a lifting mechanism is characterized in that, comprising:
First unit that hoists comprises first driver train (11) and first reel (12), and described first driver train (11) drives the rotation of described first reel (12);
Second unit that hoists comprises second driver train (21) and second reel (22), and described second driver train (21) drives the rotation of described second reel (22);
The lifting assembly has lifting beam with hook (4) and is arranged on suspension hook below the described lifting beam with hook (4),
Wherein,
First rope (31) on described first reel (12) stretches out from described first reel (12), is connected to an end of described lifting beam with hook (4);
Second rope (32) on described second reel (22) stretches out from described second reel (22), is connected to the other end of described lifting beam with hook (4).
2. lifting mechanism according to claim 1 is characterized in that,
Described first unit that hoists also comprises first angle pulley (13) and first assembly pulley (14), be arranged in turn between described first reel (12) and the described lifting assembly, described first rope (31) passes through described first angle pulley (13) and first assembly pulley (14) in turn;
Described second unit that hoists also comprises second angle pulley (23) and second assembly pulley (24), be arranged in turn between described second reel (22) and the described lifting assembly, described second rope (32) passes through described second angle pulley (23) and second assembly pulley (24) in turn.
3. lifting mechanism according to claim 1 is characterized in that,
First configuration of cells that hoists is a L type structure, and wherein said first driver train (11) is connected with described first reel (12) axis normal ground,
Second configuration of cells that hoists is a L type structure, and wherein said second driver train (21) is connected with described second reel (22) axis normal ground;
Described first driver train (11) and described second driver train (21) parallel axes ground are provided with, and described first reel (12) and described second reel (22) all are positioned between described first driver train (11) and described second driver train (21).
4. lifting mechanism according to claim 3, it is characterized in that, described first reel (12) is positioned at the rear side towards described lifting assembly of described second reel (22), described first driver train (11) extends to the side of second reel (22) forward from the side of described first reel (12), described second driver train (21) extends rearward to the side of first reel (12) from the side of described second reel (22).
5. lifting mechanism according to claim 1 is characterized in that,
Described first driver train (11) comprises bonded assembly first motor (111), first drg (112) and first reductor (113) in turn;
Described second driver train (21) comprises bonded assembly second motor (211), second drg (212) and second reductor (213) in turn.
6. lifting mechanism according to claim 1, it is characterized in that, described lifting mechanism is provided with control unit, control the synchronous rotation that described first driver train (11) drives described first reel (12) and described second driver train (21) described second reel of driving (22), make described lifting beam with hook (4) maintenance level.
7. lifting mechanism according to claim 6 is characterized in that,
Also comprise first detecting unit (5), described first detecting unit (5) comprises horizontal detection instrument (51), is arranged on the described lifting beam with hook (4), in order to the levelness of the described lifting beam with hook of sensing (4), and forms the levelness signal;
Described control unit is by described first driver train of described levelness signal control (11) and described second driver train (21), and then controls the rotating speed of described first reel (11) and described second reel (21).
8. lifting mechanism according to claim 7 is characterized in that, described first detecting unit (5) also comprises:
Wireless transmitter module is positioned near the described horizontal detection instrument, and the described levelness signal that described horizontal detection instrument is formed sends;
Wireless receiving module is positioned near the described control unit, receives described levelness signal, and described levelness signal is transferred to described control unit.
9. lifting mechanism according to claim 7 is characterized in that,
Also comprise second detecting unit (7), described second detecting unit (7) comprising:
Two sensor blocks are separately positioned on each described angle pulley;
Two are separately positioned on the support body that supports each described angle pulley near switch, are equipped with described sensor block, with the running velocity of the described angle pulley of sensing, and form corresponding impulse singla;
Described control unit is controlled described first driver train (11) and described second driver train (21) by described levelness signal or described impulse singla, and then controls the rotating speed of described first reel (11) and described second reel (21).
10. lifting mechanism according to claim 6 is characterized in that, also comprises the 3rd detecting unit (6), and described the 3rd detecting unit (6) comprising: the levelness pointer is arranged on the described lifting beam with hook, in order to indicate the levelness of described lifting beam with hook.
11. a tower crane is characterized in that, comprises by each described lifting mechanism among the claim 1-10.
12. the leveling method of the described lifting mechanism of claim 9 is characterized in that, comprising:
Receive the levelness signal of the lifting beam with hook that the horizontal detection instrument detected, receive simultaneously be provided with on the angle pulley detect the impulse singla of the rotating speed of indicating angle pulley near switch;
The rotating speed of two reels that link to each other with the two ends of lifting beam with hook by lifting rope respectively according to the control of described levelness signal or described impulse singla is with the level of adjustment lifting beam with hook.
13. method according to claim 12 is characterized in that, described rotating speed according to two reels of described levelness signal control comprises with the step of the level of adjusting lifting beam with hook:
The described levelness signal data of verification, whether correct to judge described levelness signal;
If described levelness signal is correct through verification, then according to the rotating speed of two reels of described levelness signal control, to adjust the level of lifting beam with hook;
If described levelness signal through the verification mal, is then controlled the rotating speed of two reels according to described impulse singla, to adjust the level of lifting beam with hook.
14. method according to claim 13 is characterized in that, the step of the levelness signal of the lifting beam with hook that described reception horizontal detection instrument is detected comprises:
Use wireless transmitter module that the described levelness signal that described horizontal detection instrument forms is sent;
Use wireless receiving module to receive described levelness signal, and described levelness signal is transferred to control unit.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110001444A CN102030273B (en) | 2011-01-05 | 2011-01-05 | Tower crane, lifting mechanism thereof and method for leveling lifting mechanism |
| PCT/CN2011/078294 WO2012092768A1 (en) | 2011-01-05 | 2011-08-11 | Tower crane, lifting mechanism thereof, and method for leveling lifting mechanism |
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| CN201110001444A CN102030273B (en) | 2011-01-05 | 2011-01-05 | Tower crane, lifting mechanism thereof and method for leveling lifting mechanism |
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| CN102030273B CN102030273B (en) | 2012-09-12 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102424279A (en) * | 2011-08-12 | 2012-04-25 | 中联重科物料输送设备有限公司 | Gate type bucket-wheel stacker reclaimer, and adjustment method and adjustment device for balance wheel thereof |
| CN102491186A (en) * | 2011-12-19 | 2012-06-13 | 中联重科股份有限公司 | Tower crane |
| WO2012092768A1 (en) * | 2011-01-05 | 2012-07-12 | 长沙中联重工科技发展股份有限公司 | Tower crane, lifting mechanism thereof, and method for leveling lifting mechanism |
| CN103803434A (en) * | 2014-02-13 | 2014-05-21 | 山东大汉建设机械有限公司 | Linkage double hoisting mechanisms of tower crane and speed regulating method |
| CN104724614A (en) * | 2013-12-18 | 2015-06-24 | 利勃海尔-韦尔克爱茵根有限公司 | Crane with alternate drive units |
| CN110921538A (en) * | 2019-12-23 | 2020-03-27 | 三一汽车起重机械有限公司 | Hoisting system and crane |
| CN113979312A (en) * | 2021-11-22 | 2022-01-28 | 徐州建机工程机械有限公司 | Operating system and operating method of multi-mechanism tower crane |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103588103A (en) * | 2013-11-23 | 2014-02-19 | 湖北江汉建筑工程机械有限公司 | Multipurpose tower crane with double lifting hooks |
| CN113336113B (en) * | 2021-04-25 | 2022-06-03 | 中联重科股份有限公司 | Lifting device and engineering machinery |
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| CN102424279A (en) * | 2011-08-12 | 2012-04-25 | 中联重科物料输送设备有限公司 | Gate type bucket-wheel stacker reclaimer, and adjustment method and adjustment device for balance wheel thereof |
| CN102491186A (en) * | 2011-12-19 | 2012-06-13 | 中联重科股份有限公司 | Tower crane |
| CN104724614A (en) * | 2013-12-18 | 2015-06-24 | 利勃海尔-韦尔克爱茵根有限公司 | Crane with alternate drive units |
| CN103803434A (en) * | 2014-02-13 | 2014-05-21 | 山东大汉建设机械有限公司 | Linkage double hoisting mechanisms of tower crane and speed regulating method |
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| CN110921538A (en) * | 2019-12-23 | 2020-03-27 | 三一汽车起重机械有限公司 | Hoisting system and crane |
| CN113979312A (en) * | 2021-11-22 | 2022-01-28 | 徐州建机工程机械有限公司 | Operating system and operating method of multi-mechanism tower crane |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102030273B (en) | 2012-09-12 |
| WO2012092768A1 (en) | 2012-07-12 |
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