CN106185657B - A kind of extending formula crane gear balance weight mechanism - Google Patents
A kind of extending formula crane gear balance weight mechanism Download PDFInfo
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- CN106185657B CN106185657B CN201610765419.5A CN201610765419A CN106185657B CN 106185657 B CN106185657 B CN 106185657B CN 201610765419 A CN201610765419 A CN 201610765419A CN 106185657 B CN106185657 B CN 106185657B
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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
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/74—Counterweights or supports for balancing lifting couples separate from jib
- B66C23/76—Counterweights or supports for balancing lifting couples separate from jib and movable to take account of variations of load or of variations of length of jib
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- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The present invention relates to crane gear field, specifically a kind of extending formula crane gear balance weight mechanism, including outer spreader mechanism, interior spreader mechanism and driving scissor component, the driving scissor component is arranged on the counter-jib of crane gear, it is connected on the outside of the driving scissor component with the outer spreader mechanism, it is connected on the inside of the driving scissor component with the interior spreader mechanism, balance weight is provided with the outer end of the outer spreader mechanism, the driving crane arm wobble drive opening and closing of the scissor component by crane gear, the outer spreader mechanism is driven flexible by the driving scissor component opening and closing, the interior spreader mechanism passes through the driving scissor Component driver opening and closing.The present invention is significantly increased balance weight using the spatial scaling feature of deployable structure and moves horizontally distance, effectively reduce the balance moment of flexure at the top of tower body, both tower crane stability and Static stiffness requirement had been met, dynamic characteristic is also outstanding, save material, power consumption is reduced, and greatly improves the lifting weight of crane gear.
Description
Technical field
The present invention relates to crane gear field, specifically a kind of extending formula crane gear balance weight mechanism.
Background technology
Moveable counterweight research for crane gear is long-standing, by taking derrick crane as an example, in the 1980s,
Derrick crane is the mode for occurring in that moveable counterweight, and it is the method using rope traction balance weight, 1985 annual interests
Vigorous Haier (Libherr) applies the side that a kind of new device substitutes traditional steel wire rope shifting balance weight in 500HC tower cranes
Method.BKT companies are even more that all employ balance weight mobile device in more than 75t.m all model crane arm tower cranes, its structure
It is lighter, it is highly beneficial to transporting.1989, smooth (Potain) company of ripple applied a kind of more complicated in MR300 tower cranes
Counterweight mobile system, when arm is steeved, counterweight is shifted to tower body by the effect of connecting rod., Italian Kang Man in 1997
Ground (Comedil) company applies counterweight by suspension, arm linkage come shifting balance weight in CTL400 tower cranes
Method.
But in the 1990s, primarily for the consideration of cost is reduced, European most of manufactories abandon balance weight
Mobile device, compares typically Fa Fuke (Favco) company, they have made larger adjustment in design, removable flat
Weight is all changed to fixed counterweight.Reason is that they think that shifting balance weight tower crane has its intrinsic defect, is embodied in
In terms of following four：
1st, the static load torque produced during crane arm luffing can only offset 20% by moveable counterweight；
2nd, crane arm significantly when, elevating capacity loss it is larger；
3rd, energy expenditure is big when shifting balance restarts weighing arm tower crane operation, and can produce noise；
4th, moveable counterweight mechanism needs extra inspection and maintaining, and cost is high；And moveable counterweight is ground
This is made also higher.
Up to the present, some tower crane manufacturers still adhere to using shifting balance weight, such as Peiner and BKT companies are (existing
Purchased by Potain) etc., but and portable counterbalance design obtains more succinct than before, such as Wilbert,Germeny
(Wilbert) the WT 1905L e.tronic crane arm self-raising tower cranes released in 2009, model tower crane original creation
Go out a kind of " swing type balance weight ", the appearance of the model tower crane, again paid attention to the design of shifting balance weight tower crane, its
Advantage in function performance is highlighted all the more.
Fixed balance weight tower crane has the shortcomings that its is intrinsic, for the combination of most galianconism frame, the elevation angle of arm support when not working
What is put is relatively low, to balance the torque of tower machine upper.It means that on narrow construction site, if tower crane does not work
Swing arm arm support is all placed on the small elevation angle, will cause difficulty to Construction Arrangement.Meanwhile, for movable arm tower crane, when tower crane operation,
Raising, revolution, the motion process of luffing can be undergone, additionally, there may be and frequently start and brake, integrated in various coupled motions
Under effect, tower crane structure bears strong shock and vibration, and these are all the principal elements for causing tower crane fatigue rupture.According to tower
The stable calculation of body structure understands that the trimming moment at the top of tower body plays decisive influence in tower crane stable calculation, because
This excessive trimming moment is undoubtedly the safety of influence tower crane and the key factor of durability.
In order to which when tower crane works, trimming moment is smaller, Recent study personnel devise many new removable dynamic balancing
Heavy-duty machine structure, the problem of to solve tower body top trimming moment, by using moveable counterweight tower crane, reduces tower body top and adds
Static load torque, reduce unbalanced moments there is larger fluctuation amplitude, making the antifatigue damage capability of tower crane is improved, and then
Improve tower crane safety reliability.But from the point of view of the effect applied at present, also in the presence of many not enough and defects, make moveable counterweight
Derrick crane is above restricted in application, while being studied not enough for the Structural Analysis Theory in terms of moveable counterweight
Deeply.
By using moveable counterweight mode, it can effectively improve the negative effect of derrick crane, to tower body root
For portable derrick crane, it may have very big reference, in the improvement and application of shifting balance heavy-duty machine structure
To also there is very big promotion to the working mechanism of derrick crane and application aspect.
The crane arm tower crane of existing use shifting balance double recipe formula both at home and abroad is summarized, its function, which is realized, mainly following several
The mode of kind：
1st, steel wire rope shifting balance double recipe formula.This is the balance weight movement form used earliest, as shown in Fig. 5~6, steel wire
Balance weight is connected by rope shifting balance double recipe formula by steel wire rope with arm support, and the overall length of steel wire rope is certain, with arm
The pitching of frame, balance weight is and then movable.Usual such case can set counterweight trolley and special mobile slideway, slideway
Angle of inclination, the path of length and steel wire rope etc. be all to be advised according to the structure weight position of centre of gravity with the change at the arm support elevation angle
Rule design.But its defect is it is also obvious that steel wire rope is easy to wear, and extra pull-up balance weight is needed in operation, produced very big
Consumption.
2nd, linkage shifting balance double recipe formula.Because steel wire rope easily weares and teares in use, shifting balance weight skill
Art followed by occurs in that linkage move mode again, as shown in fig. 7, which makes the move mode of counterweight by linkage
Match with crane arm, by the unbalanced moments control of tower crane within the specific limits, moved in the prior art using linkage
The crane arm tower crane of balance weight mode is than more typical favourable vigorous Haier's 500HC tower crane series, and in Construction of Hydropower Engineering field
The characteristics of domestic large-scale hydraulic door machines of MQ2000 applied to Three Gorges Projects also have shifting balance weight tower crane.
The defect of which is：In the case that this method is only applicable to hoisting weight change less, and actually rise
Lift heavy amount is random, and numerical value change scope is larger, therefore, the moveable counterweight mode of link-type to the adaptability of lift heavy not
It is fine, due to being servo-actuated with the crane arm angle of pitch, balance weight position reaction is excessively sensitive.After the change of balance weight position, gesture
It can change greatly, therefore the dynamic characteristic of tower crane structure can also be exerted an adverse impact.
3rd, swing type balance weight mode.As shown in figure 8, as technology develops, occurring in that a kind of new balance weight mechanism shape
Formula, i.e., by balance weight in counter-jib rear suspension, by the hinge of balance weight upper end come constrained displacement, this structure type is similar
Pendulum structure, balance weight lower end is connected with steel wire rope, can be servo-actuated balance weight position in crane arm pitching, tower body is reduced with this
Top static load moment of flexure, maximum freely erect highly is turned over and improves while preventing after arm support.Due to having used swing type counterweight,
Tower crane is set significantly to be greatly improved in elevating capacity, hence it is evident that better than same level model tower crane, and power consumption is smaller,
But the displacement of shifting balance weight is limited.
In summary, current moveable counterweight tower crane also has many limitations in application aspect, and using shifting
After dynamic balancing double recipe formula, many drawbacks are brought on the contrary, result in shifting balance weight tower crane do not obtain well development and
Using.The other country is in the research of moveable counterweight derrick crane and manufacture view also in starting stage, production model
It is less, such as Shenyang Sanyo production S50L4 tower cranes, river build production the arm-type derrick crane of SCM-D400 type liftings,
DZQ200 types belong to moveable counterweight derrick crane from folding arm type tower crane etc. is risen, and are also mainly take Foreign Epidemic several
Plant shifting balance double recipe formula.
The content of the invention
It is an object of the invention to provide a kind of extending formula crane gear balance weight mechanism, prolonged using scissor Component driver
Mechanism is opened up, and drives balance weight to move by spreader mechanism, so that the static load torque that can be offset during crane arm luffing is big, gesture
It can change small, and potential energy size and work done balance, and additional pendulum can be adjusted flexibly by changing spreader mechanism rod member weight
Kinetic moment is small, can greatly improve the lifting weight of crane gear.
The purpose of the present invention is achieved through the following technical solutions：
A kind of extending formula crane gear balance weight mechanism, including outer spreader mechanism, interior spreader mechanism and driving scissor group
Part, the driving scissor component is arranged on the counter-jib of crane gear, with the outer extension on the outside of the driving scissor component
Mechanism is connected, and is connected on the inside of the driving scissor component with the interior spreader mechanism, is provided with the outer end of the outer spreader mechanism
Balance weight, the driving scissor component passes through institute by the crane arm wobble drive opening and closing of crane gear, the outer spreader mechanism
State the opening and closing of driving scissor component and drive and stretch, the interior spreader mechanism passes through the driving scissor Component driver opening and closing.
The driving scissor component includes the first scissors rod and the second scissors rod, and the outer spreader mechanism includes first connecting rod
And second connecting rod, the first connecting rod is hinged with second connecting rod one end, the other end of the first connecting rod and first scissor
Bar is hinged, and the second connecting rod other end is hinged with second scissors rod, the balance weight be arranged at the first connecting rod and
The hinged end of second connecting rod.
The outer spreader mechanism includes first connecting rod, second connecting rod and an extension scissor component, the extension scissor group
Two scissors rod one end of part are hinged with the first connecting rod and second connecting rod respectively, and the other end drives scissor group with described respectively
Two scissors rods of part are hinged, and the balance weight is arranged at the hinged end of the first connecting rod and second connecting rod.
The outer spreader mechanism includes first connecting rod, second connecting rod and multiple extension scissor components, and the multiple extension is cut
Fork component is sequentially connected, and is connected located at the inner extension scissor component of outer spreader mechanism with the driving scissor component, described
First connecting rod and second connecting rod one end are hinged, the other end of the other end of the first connecting rod and the second connecting rod respectively with
Two scissors rods close to the extension scissor component of outer spreader mechanism outer end are hinged, and the balance weight is arranged at the first connecting rod
With the hinged end of second connecting rod.
The driving scissor component includes the first scissors rod and the second scissors rod, and the interior spreader mechanism includes third connecting rod
And fourth link, the third connecting rod and fourth link one end be hinged, the other end of the third connecting rod and second scissor
Bar is hinged, and the other end of the fourth link is hinged with first scissors rod.
The hinged end of the third connecting rod and fourth link is slidably connected with the counter-jib, in the driving scissor component
In the first scissors rod be provided with interior extension pin joint, the other end of the fourth link is articulated with first scissors rod
At interior extension pin joint, the free end of first scissors rod is connected by a support rod with the crane arm, and the branch
Bar two ends are held to be hinged with first scissors rod and crane arm respectively.
The support rod is expansion link.
The crane arm includes the first draw beam and the second draw beam, first draw beam and the second crane arm
Bar one scissors mechanism of formation, and first draw beam and the second draw beam hinged place form crane arm rod hinge connection
Point, first draw beam exceedes the prolongation formation of the crane arm connecting rod hinge point and the driving scissor component phase
Third connecting rod even, second draw beam exceedes the prolongation formation and the driving of the crane arm connecting rod hinge point
Slided with the counter-jib hinged place of two scissors rods in the connected fourth link of scissor component, the driving scissor component
Connection.
The crane arm connecting rod hinge point is arranged at the connection end of the counter-jib and crane gear tower body.
Advantages of the present invention is with good effect：
1st, balance weight potential variation of the invention is small, the characteristics of due to extending formula structure, and balance weight is horizontally moveable, phase
The feature big to existing shifting balance heavy-duty machine structure potential variation in the world makes a big difference, therefore dynamic characteristic is more excellent, and
Potential energy size and work done balance can be adjusted flexibly by changing spreader mechanism rod member weight, additional shaking moment is small, Neng Gou great
Width improves the lifting weight of crane gear.
2nd, the present invention is under working condition, and tower body stress amplitude is greatly reduced, and tower body lateral displacement is relatively fixed balance weight
Tower crane has substantially been reduced, and wind load resistance ability is greatly reinforced, and then causes being largely increased for stability of tower crane body.
3rd, it is of the invention because potential variation is small, and expandable structure self-equilibrium characteristic, balance weight, which is moved horizontally, to consume energy very
It is small, therefore the design substantially reduces relative to other shifting balance heavy-duty machine structure power consumptions.
4th, the present invention can also play a part of preventing arm support hypsokinesis, it is not necessary to tilting device of separately setting up defences so that anti-hypsokinesis design
Security is more reliable.
5th, the present invention can reduce wind-force when loweing arm support and produce unfavorable torque influence to tower body.
6th, counter-jib of the invention can significantly shorten, and reduce counter-jib physical dimension, and then reduce counter-jib deadweight, have
Beneficial to reduction working space, and beneficial to tower crane construction operation site layout project.
7th, because in the movable arm type tower crane of same level, the portable tower body section more fixed than balance weight of balance weight and intensity will
Ask low, therefore the present invention can reduce construction weight.
Brief description of the drawings
Fig. 1 is structural representation of the invention,
Fig. 2 is schematic view of the mounting position of the invention in Fig. 1,
Fig. 3 is mechanism principle figure of the invention in Fig. 1,
Fig. 4 is provided with schematic diagram during extension scissor component for the outer spreader mechanism in Fig. 3,
Fig. 5 is the schematic diagram one of steel wire rope shifting balance double recipe formula in the prior art,
Fig. 6 is the schematic diagram two of steel wire rope shifting balance double recipe formula in the prior art,
Fig. 7 is the schematic diagram of linkage shifting balance double recipe formula in the prior art,
Fig. 8 is the schematic diagram of swing type balance weight mode in the prior art,
Fig. 9 is the structural representation of portal crane in the prior art,
Figure 10 is the schematic diagram of the portal crane using the present invention,
Figure 11 is the portal crane schematic diagram of another structure using the present invention.
Wherein, 1 is outer spreader mechanism, and 2 be interior spreader mechanism, and 3 be balance weight, and 4 be the first scissors rod, and 5 be the second scissor
Bar, 6 be first connecting rod, and 7 be second connecting rod, and 8 be third connecting rod, and 9 be fourth link, and 10 be counter-jib, and 11 be support rod, and 12 are
Crane arm, 13 be panoramic table, and 14 be tower body, and 15 be sliding block, and 16 be hoist engine, and 17 be steel wire rope, and 18 be interior extension pin joint, 19
It is mast for support rod pin joint, 20,21 be lift heavy, and 22 be extension scissor component, and 23 be the first draw beam, and 24 be second
Weighing arm bar, 25 be crane arm connecting rod hinge point.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As shown in Figures 1 to 3, the present invention includes outer spreader mechanism 1, interior spreader mechanism 2 and driving scissor component, such as Fig. 2 institutes
Show, panoramic table 13, one end of the counter-jib 10 of crane gear and the panoramic table 13 are provided with the top of tower body 14 of crane gear
It is connected, one end of the crane arm 12 of crane gear is hinged with the panoramic table 13, as shown in figures 1 and 3, the driving scissor group
Part is arranged on the counter-jib 10, and (scissor component is driven away from the side of tower body 14) on the outside of the driving scissor component
It is connected with the outer spreader mechanism 1, the outer end of the outer spreader mechanism 1 (i.e. outer spreader mechanism 1 is away from described one end of tower body 14)
(scissor component is driven close to the side of tower body 14) interior prolong with described provided with balance weight 3, on the inside of the driving scissor component
Open up mechanism 2 to be connected, the driving crane arm 12 wobble drive opening and closing of the scissor component by crane gear, the outer spreader mechanism
1 is flexible by the driving scissor component opening and closing drive, and the interior spreader mechanism 2 passes through the driving scissor Component driver
Close.
As shown in figures 1 and 3, the driving scissor component includes the first scissors rod 4 and the second scissors rod 5, the extension
Opening up mechanism 1 includes first connecting rod 6 and second connecting rod 7, and the first connecting rod 6 is hinged with the one end of second connecting rod 7, the first connecting rod
6 other end is hinged with first scissors rod 4, and the other end of second connecting rod 7 is hinged with second scissors rod 5.It is described
Outer spreader mechanism 1 is also provided with one or more extension scissor components 22, as shown in figure 4, when the outer spreader mechanism 1 is provided with
During one extension scissor component 22, two scissors rod one end of the extension scissor component 22 respectively with the first connecting rod 6 and
Second connecting rod 7 is hinged, and two scissors rods of the other end respectively with the driving scissor component are hinged, when the outer spreader mechanism 1
During provided with multiple extension scissor components 22, each extension scissor component 22 is sequentially connected, wherein inner positioned at outer spreader mechanism 1
Extension scissor component 22 is connected with the driving scissor component, extension scissor component 22 and institute close to the outer outer end of spreader mechanism 1
State first connecting rod 6 and second connecting rod 7 is hinged.
As shown in figures 1 and 3, the interior spreader mechanism includes third connecting rod 8 and fourth link 9, the He of third connecting rod 8
The one end of fourth link 9 is hinged, and the other end of the third connecting rod 8 is hinged with second scissors rod 5, the fourth link 9
The other end is hinged with first scissors rod 4.
The present invention can be applicable on different crane gears, and with the attachment structure of crane arm 12 with the knot of crane gear
Structure is different and changes.
Embodiment 1
Crane gear in the present embodiment is tower crane, as shown in figures 1-4, in the present embodiment, the third connecting rod 8 and the
The hinged end of double leval jib 9 is slidably connected with counter-jib 10, wherein being provided with the hinged end of the third connecting rod 8 and fourth link 9
Sliding block 15, is provided with and slide rail on the counter-jib 10, and the sliding block 15 is moved along the slide rail, and the present embodiment is provided with one
Interior extension pin joint 18 is provided with support rod 11, the first scissors rod 4 in the driving scissor component, as shown in figure 3, described
Third connecting rod 8 is hinged with the second scissors rod 5 in the driving scissor component, and the fourth link 9 is then articulated with described first
At interior extension pin joint 18 on scissors rod 4, the free end of first scissors rod 4 passes through the support rod 11 and the lifting
Arm 12 is connected, and the two ends of the support rod 11 are hinged with first scissors rod 4 and crane arm 12 respectively, and the support rod 11 can
Think fix bar, or expansion link, in the present embodiment, the support rod 11 is expansion link.
As shown in figure 3, mast 20 and two hoist engines 16 are provided with the counter-jib 10, by wherein one hoist engine 16
The steel wire rope 17 of extraction is connected after bypassing the pulley on the top of mast 20 and the pulley on the top of crane arm 12 successively with lift heavy 21, by another
The steel wire rope 17 that one hoist engine 16 is drawn is connected after then bypassing the pulley on the top of crane arm 12 with lift heavy 21.As shown in figure 1, each
Linkage in individual mechanism is divided into the both sides of counter-jib 10, and the corresponding pin joint of homonymy linkage is not connected by axle
Connect.
The operation principle of the present embodiment is：
As shown in figures 5-8, in the prior art the shifting balance double recipe formula of tower crane mainly include steel wire rope shifting balance weight,
The several ways such as linkage shifting balance weight, swing type balance weight.
As shown in figures 1-4, in the present embodiment, the driving scissor component passes through support rod 11 and the phase of crane arm 12
Even, the driving driving scissor component opening and closing when crane arm 12 is swung, so as to drive outer spreader mechanism 1 and interior spreader mechanism
2 synchronization telescopes.As shown in figure 3, in the present embodiment, the first scissors rod 4 and the second scissors rod 5 in driving scissor component respectively with
First connecting rod 6 and second connecting rod 7 in outer spreader mechanism 1 are hinged, at the same again respectively with the third connecting rod 8 in interior spreader mechanism 2
It is hinged with fourth link 9, first scissors rod 4, support rod 11, crane arm 12 and counter-jib 10 also form one four in addition
Linkage, so as to realize that the synchronization telescope of the outer spreader mechanism of the wobble drive of crane arm 12 and interior spreader mechanism drives balance weight 3
Mobile, this make it that the static load torque that can be offset during 12 luffing of crane arm is big, and potential variation is small, and additional shaking moment is small, and
Potential energy size can be adjusted flexibly by changing mechanism rod member weight.
Embodiment 2
Crane gear in the present embodiment is portal crane, as shown in figure 9, of portal crane of the prior art
The main body of weighing arm 12 includes a four-bar linkage structure, wherein the end hinged place shape of the first draw beam 23 and the second draw beam 24
Into a crane arm connecting rod hinge point 25.
As shown in Figure 10, in the present embodiment, one scissor of the draw beam 24 of the first draw beam 23 and second formation
Mechanism, and the hinged place of the draw beam 24 of first draw beam 23 and second forms crane arm connecting rod hinge point 25, it is described
Crane arm connecting rod hinge point 25 is arranged at the connection end of counter-jib 10 and tower body 14, wherein the first weighing arm bar 23 exceedes institute
The prolongation for stating crane arm connecting rod hinge point 25 is the third connecting rod 8 being connected with the driving scissor component, described second
The prolongation that draw beam 24 exceedes the crane arm connecting rod hinge point 25 is the be connected with the driving scissor component
Double leval jib 9, and the hinged place of two scissors rods in the driving scissor component is slided by sliding block slide rail and counter-jib 10 and connected
Connect.
The operation principle of the present embodiment is：
The first draw beam 23 and the opening and closing of the second draw beam 24 are driven during lifting arm swing, and then drives the driving to cut
Component movement opening and closing are pitched, and then drive the telescopic moving of balance weight 3.
Embodiment 3
As shown in figure 11, the present embodiment and the difference of embodiment 2 are：Crane arm 12 in the present embodiment only includes one
Quadric chain, has no other structures, steel wire rope bypass after pulley of the quadric chain away from the one end of tower body 14 with lift heavy
21 connections.
The operation principle of the present embodiment is：
When first draw beam 23 is swung, on the one hand drive lift heavy 21 to move, on the other hand drive the driving scissor group
Part opening and closing, and then drive the telescopic moving of balance weight 3.
Claims (9)
1. a kind of extending formula crane gear balance weight mechanism, it is characterised in that：Including outer spreader mechanism (1), interior spreader mechanism
(2) and driving scissor component, the driving scissor component is arranged on the counter-jib of crane gear (10), the driving scissor group
It is connected on the outside of part with the outer spreader mechanism (1), is connected on the inside of the driving scissor component with the interior spreader mechanism (2),
The outer end of the outer spreader mechanism (1) is provided with balance weight (3), the driving crane arm (12) of the scissor component by crane gear
Wobble drive opening and closing, the outer spreader mechanism (1) drives flexible, the interior spreader mechanism by the driving scissor component opening and closing
(2) the driving scissor Component driver opening and closing are passed through.
2. extending formula crane gear balance weight mechanism according to claim 1, it is characterised in that：The driving scissor group
Part includes the first scissors rod (4) and the second scissors rod (5), and the outer spreader mechanism (1) includes first connecting rod (6) and second connecting rod
(7), the first connecting rod (6) is hinged with second connecting rod (7) one end, and the other end of the first connecting rod (6) is cut with described first
Fork arm (4) is hinged, and second connecting rod (7) other end is hinged with second scissors rod (5), and the balance weight (3) is arranged at
The first connecting rod (6) and the hinged end of second connecting rod (7).
3. extending formula crane gear balance weight mechanism according to claim 1, it is characterised in that：The outer spreader mechanism
(1) first connecting rod (6), second connecting rod (7) and an extension scissor component (22), the two of the extension scissor component (22) are included
Individual scissors rod one end is hinged with the first connecting rod (6) and second connecting rod (7) respectively, and the other end drives scissor group with described respectively
Two scissors rods of part are hinged, and the balance weight (3) is arranged at the hinged end of the first connecting rod (6) and second connecting rod (7).
4. extending formula crane gear balance weight mechanism according to claim 1, it is characterised in that：The outer spreader mechanism
(1) first connecting rod (6), second connecting rod (7) and multiple extension scissor components (22), the multiple extension scissor component (22) are included
It is sequentially connected, and is connected located at the inner extension scissor component (22) of outer spreader mechanism (1) with the driving scissor component, it is described
First connecting rod (6) and second connecting rod (7) one end are hinged, the other end of the first connecting rod (6) and the second connecting rod (7)
Two scissors rods of the other end respectively with the extension scissor component (22) close to outer spreader mechanism (1) outer end are hinged, the balance
Weight (3) is arranged at the hinged end of the first connecting rod (6) and second connecting rod (7).
5. extending formula crane gear balance weight mechanism according to claim 1, it is characterised in that：The driving scissor group
Part includes the first scissors rod (4) and the second scissors rod (5), and the interior spreader mechanism includes third connecting rod (8) and fourth link
(9), the third connecting rod (8) and fourth link (9) one end are hinged, and the other end of the third connecting rod (8) is cut with described second
Fork arm (5) is hinged, and the other end of the fourth link (9) is hinged with first scissors rod (4).
6. extending formula crane gear balance weight mechanism according to claim 5, it is characterised in that：The third connecting rod
(8) it is slidably connected with the hinged end of fourth link (9) with the counter-jib (10), first in the driving scissor component is cut
Fork arm (4) is provided with interior extension pin joint (18), and the other end of the fourth link (9) is articulated with first scissors rod (4)
On interior extension pin joint (18) place, the free end of first scissors rod (4) passes through a support rod (11) and the lifting
Arm (12) is connected, and the support rod (11) two ends are hinged with first scissors rod (4) and crane arm (12) respectively.
7. extending formula crane gear balance weight mechanism according to claim 6, it is characterised in that：The support rod (11)
For expansion link.
8. extending formula crane gear balance weight mechanism according to claim 5, it is characterised in that：The crane arm (12)
Including the first draw beam (23) and the second draw beam (24), first draw beam (23) and the second draw beam (24)
A scissors mechanism is formed, and first draw beam (23) and the second draw beam (24) hinged place form lifting arm link
Pin joint (25), first draw beam (23) exceedes prolongation formation and the institute of the crane arm connecting rod hinge point (25)
The connected third connecting rod (8) of driving scissor component is stated, second draw beam (24) exceedes the crane arm connecting rod hinge point
(25) two in the fourth link (9) that prolongation formation is connected with the driving scissor component, the driving scissor component
The hinged place of individual scissors rod is slidably connected with the counter-jib (10).
9. extending formula crane gear balance weight mechanism according to claim 8, it is characterised in that：The lifting arm link
Pin joint (25) is arranged at the connection end of the counter-jib (10) and crane gear tower body (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610765419.5A CN106185657B (en) | 2016-08-30 | 2016-08-30 | A kind of extending formula crane gear balance weight mechanism |
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| CN110723661A (en) * | 2019-11-18 | 2020-01-24 | 四川大学 | Crane boom self-balancing structure |
| CN111039196B (en) * | 2019-12-26 | 2024-06-21 | 沈阳建筑大学 | Movable counterweight device with combined shear fork of movable arm tower crane and use method of movable counterweight device |
| CN116062635B (en) * | 2023-03-23 | 2023-08-18 | 杭州未名信科科技有限公司 | Embedded integrated driving control system and method for slewing mechanism of tower crane |
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| CN2825574Y (en) * | 2005-08-30 | 2006-10-11 | 四川建设机械（集团）股份有限公司 | Four-link-rod balance-weight shifting unit for movable-arm tower type crane for construction |
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