CN109650255A - Derrick crane swing trolley hoist self-balancing system - Google Patents
Derrick crane swing trolley hoist self-balancing system Download PDFInfo
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- CN109650255A CN109650255A CN201811562471.6A CN201811562471A CN109650255A CN 109650255 A CN109650255 A CN 109650255A CN 201811562471 A CN201811562471 A CN 201811562471A CN 109650255 A CN109650255 A CN 109650255A
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- Prior art keywords
- pulley
- swing
- raising
- crossbeam
- pulley blocks
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C11/00—Trolleys or crabs, e.g. operating above runways
- B66C11/08—Trolleys or crabs, e.g. operating above runways with turntables
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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
- B66C11/00—Trolleys or crabs, e.g. operating above runways
- B66C11/16—Rope, cable, or chain drives for trolleys; Combinations of such drives with hoisting gear
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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
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
- B66C13/085—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions electrical
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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
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/10—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for preventing cable slack
-
- 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
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/74—Counterweights or supports for balancing lifting couples separate from jib
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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
- B66C23/62—Constructional features or details
- B66C23/84—Slewing gear
Abstract
The present invention relates to derrick crane technical field, in particular to a kind of derrick crane swing trolley hoist self-balancing system, including trolley frame, revolving structure, centre bollard system, four-bar mechanism and raising crossbeam；Described revolving structure one end connects trolley frame, and the other end is connected with four-bar mechanism, and four-bar mechanism bottom is connected with raising crossbeam；The centre bollard system includes two groups of fixed pulley blocks being mounted on trolley frame and the swing pulley blocks being mounted on four-bar mechanism, and swing pulley blocks and four-bar mechanism are rotated with swing mechanism；The raising line of two lifting mechanisms of tower crane is respectively through two of the fixation pulley blocks on trolley frame around entering two of pulley, swing pulley blocks after the pulley for entering pulley, swinging crossbeam and raising crossbeam both ends, two for looping back to corresponding swing pulley blocks and fixed pulley blocks lay out pulley, crane arm end is connected to fix, when guaranteeing that raising rope tension is unequal, swinging crossbeam is deviated to the smaller side of pulling force.
Description
Technical field
The present invention relates to derrick crane technical field, in particular to a kind of derrick crane swing trolley hoist self-balancing
System.
Background technique
It is that hoist is avoided to generate larger partial load on crane arm for the swing trolley in derrick crane hanging device,
And the intensity of crane arm is influenced, load is hung at both ends must be equal, this limits the flexibility for hanging load to a certain extent, also reduces and hangs
Fill the efficiency of work；The patent of invention of Patent No. ZL2017 1 0260248.5 " has comprehensive adjustment handling space of components
The derrick crane of pose function ", hoist generates larger partial load on crane arm, and influences the intensity of crane arm.Therefore
It needs to study swing trolley hoist self-balancing system adaptable therewith, increases the flexibility for hanging load, improve the effect of lifting work
Rate guarantees the intensity of crane arm in hoisting process.
Summary of the invention
For the above technical problems, the present invention provides a kind of derrick crane rotation in prior art basis
Trolley hoist self-balancing system is put, when the pulling force of both ends hoist rope is unequal, swinging crossbeam will be to the smaller side of pulling force
Offset, so that the center line of used load downwards that crane arm is subject to tends to lifting arm center, to reduce because load is hung not in two sides
The wobbler action for balancing and crane arm being generated.Also, in the case where identical double leval jib parameter, swinging crossbeam and raising crossbeam
Between lifting pulley group multiplying power it is fewer, it is better to reduce eccentrically loaded effect.
The purpose of the present invention is achieved through the following technical solutions:
A kind of derrick crane swing trolley hoist self-balancing system of the present invention, including trolley frame, revolving structure, center are led
To pulley system, four-bar mechanism and raising crossbeam；The trolley frame is mounted on crane arm；Revolving structure one end connection
Trolley frame, the other end are connected with four-bar mechanism, and the four-bar mechanism bottom is connected with raising crossbeam；The centre pilot is sliding
Wheel system includes fixed pulley blocks and swing pulley blocks；It wherein fixes pulley blocks to be mounted on trolley frame, swing pulley blocks are arranged side by side
It is mounted on four-bar mechanism, swing pulley blocks and four-bar mechanism are rotated with swing mechanism；Two lifting mechanisms of tower crane
Raising line two respectively through the fixation pulley blocks on trolley frame around entering two of pulley, swing pulley blocks around entering pulley, pendulum
After dynamic crossbeam and the pulley at raising crossbeam both ends, two for looping back to corresponding swing pulley blocks and fixed pulley blocks lay out cunning
Wheel, is connected to crane arm end and fixes, when unequal around the raising rope tension of swinging crossbeam both ends raising line leading block,
Swinging crossbeam is deviated to the smaller side of pulling force, so that the center line of used load downwards that crane arm is subject to tends in crane arm
The heart, to reduce the wobbler action generated due to two sides hang and carry imbalance to crane arm.
Further, the revolving structure includes pivoting support, lower turntable and rotary motion mechanism；The pivoting support top
Portion is connect with trolley frame, and bottom is connect with lower turntable；The rotary motion mechanism is mounted on lower turntable, rotary motion mechanism
Output end and pivoting support are sequentially connected, and relatively rotate pivoting support and lower turntable.
Further, the four-bar mechanism includes two pulley frame plates, four parallel rods and swinging crossbeam；Described two
Pulley frame plate is arranged in parallel, and is symmetrically mounted on lower turntable bottom, it is sliding that the swing pulley blocks of centre bollard system are connected to two
It takes turns between frame plate；Four parallel rods are connect with the both ends of two pulley frame plates respectively, and the other end of connecting rod connects respectively
Connect the swinging crossbeam.
Further, the swinging crossbeam both ends are respectively disposed with the equal raising line leading block of quantity, right with it
The raising crossbeam both ends that should be connected also are disposed with the lifting pulley equal with swinging crossbeam both ends quantity；The raising line guiding is slided
Wheel group and the quantity of lifting pulley group middle pulley are at least 1.
Further, when the raising line leading block and lifting pulley are more than two, raising line passes through swing pulley
Group enters the lifting pulley of the raising line leading block at swinging crossbeam both ends, raising crossbeam both ends around entering pulley, then successively passes through
The raising line leading block and lifting pulley for crossing the same side loop back to the pulley that lays out of swing pulley blocks, and pass through fixed pulley
The pulley that lays out of group is connected to crane arm fixing end.
Further, the connecting rod of the four-bar mechanism and swinging crossbeam angle and the long relationship of each section bar meet with
Lower two conditions:
With
In formula: l is length of connecting rod, and a is hinge of the connecting rod on swinging crossbeam to the both ends raising line leading block center of circle
Distance, R are that raising line leading block calculates radius, and θ is connecting rod and swinging crossbeam angle, O1(-x1, 0), O2(x1, 0) and it is two groups
Swing pulley central coordinate of circle；A(-x2,y2), B (x2,y2) it is tie point coordinate on two connecting rods and pulley frame plate.
The invention has the benefit that
1. use structure of the invention, when around swinging crossbeam both ends raising line leading block hoist rope pulling force not
When equal, swinging crossbeam will be deviated to the smaller side of pulling force, so that the center line of used load downwards that crane arm is subject to tends to
Lifting arm center, to reduce the wobbler action generated due to two sides hang and carry imbalance to crane arm.Also, in identical double leval jib
In the case where parameter, lifting pulley group multiplying power is fewer between swinging crossbeam and raising crossbeam, and it is better to reduce eccentrically loaded effect.
2. the raising line leading block that swinging crossbeam both ends of the invention have quantity equal, and raising crossbeam both ends also have
Lifting pulley corresponding with swinging crossbeam both ends quantity, two hoist ropes fixed from trolley respectively pulley blocks around entering cunning
Wheel by the swing pulley blocks of lower turntable around the lifting pulley group for entering pulley and entering swinging crossbeam Yu raising crossbeam both ends, finally
The pulley that lays out of swing pulley blocks is returned directly to by the same side lifting pulley at both ends on raising crossbeam respectively, and by determining cunning
Wheel group lays out pulley to arm end fixed point.It is returned directly to be fixed on lower turntable lower part from the lifting pulley group of raising crossbeam
Swing pulley blocks, it is possible to reduce steering resistance square caused by raising line when lower rotation of rotary table.
3. the connecting rod of four-bar mechanism of the present invention and swinging crossbeam angle and the long relationship of each section bar will meet following two
Condition:WithTo guarantee that connecting rod and the swinging crossbeam of double leval jib are being put
During dynamic, raising line leading block and the top swing pulley of swinging crossbeam end do not interfere and hoist rope is not sent out
Life is disengaged from the groove phenomenon.
4. the perfect flexibility for hanging load of the present invention, improves the efficiency of lifting work, the lifting in guaranteeing hoisting process
Under conditions of arm intensity, the wobbler action generated by two sides hoist imbalance to crane arm is eliminated.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the right view of Fig. 1；
Fig. 3 is four-bar mechanism structural parameters schematic diagram of the invention；
Fig. 4 is trolley frame schematic perspective view；
Fig. 5 is the floor map of Fig. 4；
Fig. 6 is fixed pulley block structure schematic diagram；
Fig. 7 is the structural schematic diagram of revolving structure；
Fig. 8 is the floor map of Fig. 7；
Fig. 9 is swing pulley block structure schematic diagram；
Figure 10 is swinging crossbeam main view；
Figure 11 is the top view of Figure 10；
Figure 12 is raising crossbeam main view；
Figure 13 is the top view of Figure 12；
Hoist rope wiring structural schematic diagram when Figure 14 is four multiplying power.
It is specific:
1. trolley frame, 2. pivoting supports, 3. lower turntables, 31. pulley frame plates, 4. rotary motion mechanisms；
51. fixed pulley blocks, 501. fixed pulleys are around pulley I is entered, and for 502. fixed pulleys around pulley II is entered, 503. fix cunning
Wheel lays out pulley I, and 504. fixed pulleys lay out pulley II；
52. swing pulley blocks, 505 swing pulleys are around pulley I is entered, and for 506. swing pulleys around pulley II is entered, 507. swings are sliding
Wheel lays out pulley I, and 508. swing pulleys lay out pulley II；
6. swinging crossbeam, 601. raising line leading blocks I, 602. raising line leading blocks II, 603. raising lines guiding are slided
Wheel III, 604. raising line leading blocks IV；
7. connecting rod；
8. raising crossbeam, 801. lifting pulley I, 802. lifting pulley II, 803. lifting pulley III, 804. lifting pulley
Ⅳ；
1a. lifting mechanism I, 1b. lifting mechanism II, 2a. hoist rope I, 2b. hoist rope II；
Conductor rope pulley I on 3a. crane arm, conductor rope pulley II on 3b. crane arm, conductor rope pulley III on 5a. crane arm, 5b.
Conductor rope pulley IV on crane arm；
4a. load lifting limiter I, 4b. load lifting limiter II；
6a. raising line anti-twisting equipment I, 6b. raising line anti-twisting equipment II.
Specific embodiment
The present invention is retouched in detail with reference to the accompanying drawings and examples.
Embodiment: shown in as shown in Figure 1, Figure 2, Figure 14, a kind of derrick crane swing trolley hoist self-balancing system of the present invention,
Including trolley frame 1, revolving structure, centre bollard system, four-bar mechanism and raising crossbeam 8；The trolley frame 1 is mounted on
On crane arm；Described revolving structure one end connects trolley frame 1, other end connection and four-bar mechanism, the four-bar mechanism bottom
Portion is connected with raising crossbeam 8；The centre bollard system includes fixed pulley blocks and swing pulley blocks；Wherein fix pulley
Group 51 is mounted on trolley frame, and swing pulley blocks 52 are connected to side by side on the four-bar mechanism below revolving structure, swing pulley
Group and four-bar mechanism are rotated with swing mechanism；The raising line of two lifting mechanisms of tower crane is respectively through the fixation on trolley frame
Two of pulley blocks around entering two of pulley, swing pulley blocks after the pulley for entering pulley, swinging crossbeam and raising crossbeam both ends,
Two for looping back to corresponding swing pulley blocks and fixed pulley blocks lay out pulley, are connected to crane arm end and fix, when bypassing
When the raising rope tension of swinging crossbeam both ends raising line leading block is unequal, swinging crossbeam is deviated to the smaller side of pulling force, is made
The center line of used load downwards that is subject to of crane arm tends to lifting arm center, thus reduce because two sides hang load it is uneven due to it is right
The wobbler action that crane arm generates.
As shown in Figure 4-Figure 6, wherein two fixed pulleys of fixed pulley blocks 51 are around entering, pulley I 501, II 502 is arranged side by side to pacify
Mounted in the side of trolley frame 1, two fixed pulleys lay out the other side that pulley I 503, II 504 is mounted on trolley frame side by side；Swing
One swing pulley of pulley blocks 52 is around entering pulley I 505 and a swing pulley lays out pulley I 507 and is mounted on double leval jib side by side
Swing pulley is installed around entering pulley II 506 and swing in the side of the pulley frame plate 31 of mechanism, the other side of pulley frame plate 31 side by side
Pulley lays out pulley II 508.
As shown in figs. 7 to 9, the revolving structure includes pivoting support 2, lower turntable 3 and rotary motion mechanism 4；Described time
Turn 2 top of bearing to be fixedly connected with trolley frame 1, bottom is connect with lower turntable 3；The rotary motion mechanism 4 is mounted on lower turntable 3
On, the output end and pivoting support 2 of rotary motion mechanism 4 are sequentially connected, and the rotary motion mechanism 4 is turning motor, are returning
Under the driving of rotating motor, 2 engaged transmission of output shaft gear and pivoting support drives the lower turntable 3 of installation turning motor and returns
Turn bearing 2 to relatively rotate, so as to adjust the rotational angle of hoisting heavy.
As shown in Figure 1 and Figure 2, the four-bar mechanism includes two pulley frame plates, 31, four parallel rods 7 and swings horizontal
Beam 6；The two pulleys frame plate 31 is arranged in parallel, and is symmetrically mounted on the bottom of lower turntable 3, and the swing of centre bollard system is sliding
Wheel group 52 is connected between two pulley frame plates 31；Four parallel rods 7 are connect with the both ends of two pulley frame plates 31 respectively,
The other end of connecting rod 7 is separately connected the swinging crossbeam 6, is swung in hoist imbalance.
Wherein: as shown in figure 3, establishing coordinate system, the parameter of the double leval jib will be satisfied with following condition, to guarantee that four connect
The connecting rod 7 and swinging crossbeam 6 of bar during the swing, raising line leading block I601, II 602, III of 6 end of swinging crossbeam
603 and IV 604 do not interfere and hoist rope is not disengaged from the groove phenomenon with top swing pulley blocks 52, then connecting rod 7 and pendulum
The relationship of dynamic 6 angle of crossbeam and each section bar length meets following two condition:
With
In formula: l is 7 length of connecting rod, and a is hinge of the connecting rod on swinging crossbeam to the both ends raising line leading block center of circle
Distance, R are that raising line leading block calculates radius, and θ is connecting rod and swinging crossbeam angle, O1(-x1, 0), O2(x1, 0) and it is two groups
Swing pulley central coordinate of circle；A(-x2,y2), B (x2,y2) it is tie point coordinate on two connecting rods and pulley frame plate.
As shown in figures 10-13,6 both ends of swinging crossbeam are respectively disposed with the equal raising line leading block of quantity,
8 both ends of raising crossbeam of corresponding connection are also disposed with the lifting pulley equal with 6 both ends quantity of swinging crossbeam；The raising
The quantity of rope leading block and lifting pulley is at least 1, is changed according to lifting pulley group multiplying power difference.
In this example, as shown in figure 14, using four multiplying power lifting pulley groups, it may be assumed that the swinging crossbeam 6 and 8 liang of raising crossbeam
Two pulleys are installed at end respectively, and the wirerope of 8 liang of head sheaves of such swinging crossbeam 6 and raising crossbeam undertakes 1/4 weight of weight,
Reduce the load of wirerope.
As shown in Figure 1, Figure 2, shown in Fig. 9, the fixed pulley blocks 51 include fixed pulley around enter pulley I 501, fixed pulley around
Enter pulley II 502, fixed pulley lays out pulley I 503, fixed pulley lays out pulley II 504；The swing pulley blocks 52 are arranged in
In the pulley frame plate 31 of revolving structure, including swing pulley is sliding around pulley II 506, swing is entered around pulley I 505, swing pulley is entered
Wheel lays out pulley I 507, swing pulley lays out pulley II 508；
As shown in Figure 10, Figure 11, described 6 one end of swinging crossbeam is equipped with raising line leading block I 601 and raising line is led
To pulley III 603, the other end is equipped with raising line leading block II 602 and raising line leading block IV 604, corresponding in raising
One end of crossbeam 8 is equipped with lifting pulley I 801 and lifting pulley III 803, and the other end is equipped with lifting pulley II 802 and raising
Pulley IV 804,8 both ends of raising crossbeam are also connected with suspension hook；In the case where identical four-bar mechanism, swinging crossbeam
Pulley block ratio is smaller between 6 and raising crossbeam 8, and it is better to reduce eccentrically loaded effect.
As shown in figure 14, specific baudrier are as follows:
I 2a of hoist rope, by I 3a of conductor rope pulley on crane arm, is limited from releasing in I 1a of lifting mechanism into lifting capacity
I 4a of device processed is downwardly into III 5a of conductor rope pulley on crane arm, then fixes from trolley passing through around entering pulley I 501 for pulley blocks 51
The swing pulley blocks 52 of lower turntable 3 around pulley I 505 is entered, enter the raising line leading block I 601 on swinging crossbeam 6, to
The lower lifting pulley I 801 on raising crossbeam 8, upwards about the raising line leading block III 603 entered on swinging crossbeam 6, then to
The lower lifting pulley III 803 on raising crossbeam 8, be returned directly to swing pulley blocks 52 lays out pulley I 507, and by fixed
Pulley blocks 51 lay out pulley I 503, finally around I 6a of raising line anti-twisting equipment to crane arm fixing end；
II 2b of hoist rope is released from II 1b of lifting mechanism by II 3b of conductor rope pulley on crane arm, into lifting capacity
II 4b of limiter is downwardly into IV 5b of conductor rope pulley on crane arm, then fix from trolley pulley blocks 51 around entering pulley II 502
By the swing pulley blocks 52 of lower turntable 3 around pulley II 506 is entered, the raising line leading block II on swinging crossbeam 6 is entered
602, the lifting pulley II 802 being downwardly on raising crossbeam 8, upwards about the raising line leading block IV entered on swinging crossbeam 6
604, enter the lifting pulley IV 804 on raising crossbeam 8 still further below, be returned directly to swing pulley blocks 52 lays out pulley II 508,
And pulley II 504 is laid out by fixed pulley group 51, finally around II 6b of raising line anti-twisting equipment to crane arm fixing end.More than
Described is only presently preferred embodiments of the present invention, is not intended to limit the invention, all within the spirits and principles of the present invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of derrick crane swing trolley hoist self-balancing system, which is characterized in that including trolley frame, revolving structure, in
Heart leading block system, four-bar mechanism and raising crossbeam；The trolley frame is mounted on crane arm；Described revolving structure one end
Trolley frame is connected, the other end is connected with four-bar mechanism, and the four-bar mechanism bottom is connected with raising crossbeam；It leads at the center
It include fixed pulley blocks and swing pulley blocks to pulley system；It wherein fixes pulley blocks to be mounted on trolley frame, swing pulley blocks
It is mounted on four-bar mechanism side by side, swing pulley blocks and four-bar mechanism are rotated with swing mechanism；Two raisings of tower crane
The raising line of mechanism two respectively through the fixation pulley blocks on trolley frame is around entering two of pulley, swing pulley blocks around entering cunning
Wheel, swinging crossbeam and raising crossbeam both ends pulley after, loop back to two of corresponding swing pulley blocks and fixed pulley blocks around
Pulley out is connected to crane arm end and fixes, when around the raising rope tension not phase of swinging crossbeam both ends raising line leading block
Whens equal, swinging crossbeam is deviated to the smaller side of pulling force, so that the center line of used load downwards that crane arm is subject to tends to lifting
Arm center, to reduce the wobbler action generated due to two sides hang and carry imbalance to crane arm.
2. a kind of derrick crane swing trolley hoist self-balancing system according to claim 1, which is characterized in that described
Revolving structure includes pivoting support, lower turntable and rotary motion mechanism；Connect at the top of the pivoting support with trolley frame, bottom and
Lower turntable connection；The rotary motion mechanism is mounted on lower turntable, and the output end and pivoting support of rotary motion mechanism are driven
Connection relatively rotates pivoting support and lower turntable.
3. a kind of derrick crane swing trolley hoist self-balancing system according to claim 1, which is characterized in that described
Four-bar mechanism includes two pulley frame plates, four parallel rods and swinging crossbeam；The two pulleys frame plate is arranged in parallel, symmetrically
It is mounted on lower turntable bottom, the swing pulley blocks of centre bollard system are connected between two pulley frame plates；Described four flat
Row connecting rod is connect with the both ends of two pulley frame plates respectively, and the other end of connecting rod is separately connected the swinging crossbeam.
4. a kind of derrick crane swing trolley hoist self-balancing system according to claim 3, which is characterized in that described
Swinging crossbeam both ends be respectively disposed with the equal raising line leading block of quantity, the raising crossbeam both ends of corresponding connection
It is disposed with the lifting pulley equal with swinging crossbeam both ends quantity；The raising line leading block group and lifting pulley group middle pulley
Quantity be at least 1.
5. a kind of derrick crane swing trolley hoist self-balancing system according to claim 4, which is characterized in that described
When raising line leading block and lifting pulley are more than two, raising line enters swing cross around pulley is entered by swing pulley blocks
The raising line leading block at beam both ends, raising crossbeam both ends lifting pulley, then be successively oriented to and slide by the raising line of the same side
Wheel and lifting pulley loop back to the pulley that lays out of swing pulley blocks, and are connected to lifting by the pulley that lays out of fixed pulley blocks
Arm fixing end.
6. a kind of derrick crane swing trolley hoist self-balancing system according to claim 3, which is characterized in that described
Four-bar mechanism connecting rod and the long relationship of swinging crossbeam angle and each section bar meet following two condition:
With
In formula: l is length of connecting rod, and a is distance of hinge of the connecting rod on swinging crossbeam to the both ends raising line leading block center of circle,
R is that raising line leading block calculates radius, and θ is connecting rod and swinging crossbeam angle, O1(-x1, 0), O2(x1, 0) and it is that two groups of swings are sliding
Take turns central coordinate of circle；A(-x2,y2), B (x2,y2) it is tie point coordinate on two connecting rods and pulley frame plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811562471.6A CN109650255B (en) | 2018-12-20 | 2018-12-20 | Hanging weight self-balancing system of swing trolley of tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811562471.6A CN109650255B (en) | 2018-12-20 | 2018-12-20 | Hanging weight self-balancing system of swing trolley of tower crane |
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| Publication Number | Publication Date |
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| CN109650255A true CN109650255A (en) | 2019-04-19 |
| CN109650255B CN109650255B (en) | 2019-12-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113184700A (en) * | 2021-05-21 | 2021-07-30 | 岳阳鹏程建设集团有限公司 | Tower crane rope supporting trolley and tower crane |
| US20220153558A1 (en) * | 2020-11-18 | 2022-05-19 | Jeff Anderson | Hoist replacement frame |
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| US20220153558A1 (en) * | 2020-11-18 | 2022-05-19 | Jeff Anderson | Hoist replacement frame |
| CN113184700A (en) * | 2021-05-21 | 2021-07-30 | 岳阳鹏程建设集团有限公司 | Tower crane rope supporting trolley and tower crane |
| CN113184700B (en) * | 2021-05-21 | 2024-01-02 | 岳阳鹏程建设集团有限公司 | Tower crane holds in palm rope dolly and tower crane |
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|---|---|
| CN109650255B (en) | 2019-12-24 |
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