CN205662257U - Parallel four -bar mechanism balance crane - Google Patents

Parallel four -bar mechanism balance crane Download PDF

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Publication number
CN205662257U
CN205662257U CN201620571799.4U CN201620571799U CN205662257U CN 205662257 U CN205662257 U CN 205662257U CN 201620571799 U CN201620571799 U CN 201620571799U CN 205662257 U CN205662257 U CN 205662257U
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China
Prior art keywords
bar
bearing
principal arm
parallelogram lindage
arm bar
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CN201620571799.4U
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Chinese (zh)
Inventor
金福民
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JIANGSU COOPERATES PORT MACHINERY MANUFACTURE CO Ltd
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JIANGSU COOPERATES PORT MACHINERY MANUFACTURE CO Ltd
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Abstract

The utility model relates to a parallel four -bar mechanism balance crane, it includes the gate seat, through the revolving stage of slewing bearing pivotally connected to on the gate seat, the revolving bed of fixed connection on the revolving stage, the parallel four -bar mechanism of connection on the revolving bed, parallel four -bar mechanism is including rotating the main arm pole of connecting on the revolving bed, the middle part is rotated the connection dismantled and assembledly and is got the thing pole at main arm pole front end, the front end rotates the pull rod of being connected and lieing in main arm pole top with the one end of getting the thing pole dismantled and assembledly mutually, one end and the rear end of pull rod rotate dismantled and assembledly mutually that be connected and the other end rotates the weight linear meter of being connected with the rear end of main arm pole dismantled and assembledly mutually, one end is rotated and is connected on the main arm pole and the master cylinder of other end rotation connection on the revolving bed, one end is rotated and is connected on the weight linear meter and the vice hydro -cylinder of other end rotation connection on the main arm pole, the main arm pole, get the thing pole, pull rod and weight linear meter constitute a parallelogram, flexible functioning speed and the stroke of control master cylinder and vice hydro -cylinder are set for through PLC.

Description

Parallelogram lindage balance crane
Technical field
This utility model relates to a kind of hoisting machinery, particularly relates to a kind of boom type type crane.
Background technology
Existing double leval jib high pedestal jib crane, as shown in Figure 1, its structure is: 1, double leval jib crane arm, one of them Connecting rod (i.e. going up rotary column) is motionless structure, and the opposite side of four-bar mechanism is not parallel;2, luffing uses rack drives luffing or screw rod Drive luffing;3, steel wire rope 22 drawn by lifting mechanism reel, then hangs suspender and takes thing, it is achieved lifting;4, counterweight is placed At equalizer bar afterbody, and being connected to principal arm frame by lower link bar, counterweight system is relatively independent with four bars, for each system System, connects simply by lower link bar, is synchronized with the movement both realizing, i.e. counterweight system is not on four-bar mechanism.Its Operation principle is: jib lubbing mechanism drives four-bar mechanism motion, it is achieved suspender level luffing moves;Counterweight system simultaneously is passed through The lower link bar being connected with jib realizes synchronous operation, to balance boom system and load weight, it is achieved energy-conservation.Four-bar mechanism is only The motion of suspender level luffing can be realized, and the lifting of suspender is come real by lifting mechanism by the steel wire rope folding and unfolding being wrapped on reel Existing.The motion that hoists must have steel wire rope to participate in.
The type Four-link door A seating crane has the disadvantages that 1, steel wire rope is consumable accessory, needs periodic replacement;2, steel Cord has because checking possibility that is not in place and that rupture suddenly;3, steel wire hang suspender, when taking thing, especially revolution time rock big; 4, with grab bucket time, taking thing by grab bucket own wt, grab bucket is from great, and the material of crawl is few, and efficiency is low;5, whole mechanism is complicated, Divide four bar boom systems and balance Weighting system, manufacture and design difficulty high;6, the height of the maintaining difficulty in running, expense Greatly;7, the most really realizing balance, it is higher that lifting mechanism promotes energy consumption when running.
Utility model content
In order to solve the problems of the prior art, the purpose of this utility model is to provide a kind of parallelogram lindage and balances Heavy-duty machine.
In order to achieve the above object, this utility model provides a kind of parallelogram lindage balance crane, and it includes door Seat, the turntable, the revolving bed being fixedly connected on turntable that are pivotably attached on gate seat by pivoting support, it is connected on revolving bed Parallelogram lindage.
Parallelogram lindage includes that the principal arm bar being rotatably connected on revolving bed, middle part are rotatably connected on principal arm removably The fetching rod of bar front end, front end rotate removably with one end of fetching rod be connected and be positioned at pull bar above principal arm bar, one End rotates removably with the rear end of pull bar and to be connected and the other end rotates removably with the rear end of principal arm bar joining of being connected Weight bar, the master cylinder that one end is rotatably connected on principal arm bar and the other end is rotatably connected on revolving bed, one end are rotatably connected on On weight linear meter and the other end is rotatably connected on the auxiliary oil cylinder on principal arm bar, principal arm bar, fetching rod, pull bar and weight linear meter constitute one Parallelogram;The master cylinder place of being rotationally connected on principal arm bar, the place of being rotationally connected, the auxiliary oil cylinder of revolving bed and principal arm bar are being led The place of being rotationally connected on armed lever sets gradually from front to back;The other end universal rotational ground of fetching rod connects load-engaging device;Logical Cross PLC setup control master cylinder and the stretching operation speed of auxiliary oil cylinder and stroke, control the upper and lower of parallelogram lindage with this Parallel misalignment between elevating movement and each rod member of parallelogram lindage self, thus realize the oscilaltion of load-engaging device and front Rear luffing.
Further, between principal arm bar and fetching rod, between fetching rod and pull bar, between pull bar and weight linear meter, weight linear meter And all it is rotationally connected by the bearing pin of band bearing between principal arm bar.
Further, principal arm bar has the first bearing pin with being connected in fetching rod, and on another, connection has removable The split type clutch shaft bearing seat of dress, is rotationally connected by clutch shaft bearing between the first bearing pin and clutch shaft bearing seat;Fetching rod with draw The upper connection of in bar one has the second bearing pin, and on another, connection has split type second bearing block, the second bearing pin and the second bearing It is rotationally connected by the second bearing between Zuo;Pull bar has the 3rd bearing pin with being connected in weight linear meter, and another connects There is split type 3rd bearing block, be rotationally connected by the 3rd bearing between the 3rd bearing pin and the 3rd bearing block;Weight linear meter and principal arm The upper connection of in bar one has the 4th bearing pin, and on another, connection has split type 4th bearing block, the 4th bearing pin and the 4th bearing It is rotationally connected by the 4th bearing between Zuo.
Further, bearing is rolling bearing or sliding bearing.
Further, pull bar is circular tube structure or hole box beam structure.
Further, principal arm bar, fetching rod, weight linear meter are variable cross-section box type girder construction.
Further, load-engaging device is grab bucket, suspension hook or container spreader.
Further, on weight linear meter, connection has ballast box.
Further, turntable is also equipped with electro-hydraulic devices room, drivers' cab.
Further, gate seat is to be furnished with the portable gate seat of walking mechanism or surface-based fixed gate seat.
Owing to have employed technique scheme, this utility model parallelogram lindage balance crane, have the advantage that
1) tradition double leval jib crane has a rod member for fixing bar, i.e. goes up rotary column basis, does not moves with four bars, Four bar sizes of double leval jib crane, are not parallelogrames, and four bars of parallelogram lindage of the present utility model are equal For dynamic operation rod member, parallelogram lindage is parallelogram.
2) tradition double leval jib crane has jib lubbing mechanism, hoister winch, steel wire rope, pulley;And lifting of the present utility model These parts are not had on machine.Especially steel wire rope is consumable accessory, loads and unloads occasion at bulk cargo, and dust is relatively big, and steel rope abrasion is very fast, easily Fracture, needs timing more change steel rope, and this utility model does not has steel wire rope, and lifting amplitude-change is realized by parallelogram lindage motion, makes Low with maintenance cost.
3) this utility model avoids the safety and efficiency using lifting mechanism and steel wire rope to cause, as steel wire rope is easy Wear and rupture, steel wire hang suspender such as easily rocks at the problem;This utility model, load-engaging device is hinged on parallelogram lindage top End, is substantially reduced and rocks, and the speed of service faster can finally achieve safer, more efficient material handling effect.
4) tradition double leval jib crane arm support system and balance Weighting system be two systems, between with lower link bar connect, Structural system is complicated, produces and manufactures the problem big with maintenance cost;This utility model crane only one of which parallelogram lindage System, on a counterweight rod member with which, equal to being united two into one by two cover systems of conventional hoist, it is achieved that structure designs Manufacture simplification, the effect of operation and maintenance expense reduction.
5) load-engaging device of tradition double leval jib crane connects with steel wire rope, therefore in addition to load-engaging device is conducted oneself with dignity, does not has Extra power is used for capturing material, and particularly grabbing bucket with steel wire rope open and close type when, crane efficiency is low;And this practicality is new The crane of type is hinged with parallelogram lindage rigidity because of grab bucket, and therefore the power of parallelogram lindage can be real with special delivery to grab bucket The now crawl to special material, is such as particularly suitable for waste metal material and captures, irregularly has the rubbish of hardness to capture, therefore This crane is particularly suitable for the bad working environments occasions such as resource reclaim harbour, stockyard.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of tradition double leval jib high pedestal jib crane in this utility model background technology;
Accompanying drawing 2 is the parallelogram lindage balance crane structural representation when capturing lower object in the present embodiment;
Accompanying drawing 3 is the parallelogram lindage balance crane structural representation when capturing eminence object in the present embodiment;
Accompanying drawing 4 in the present embodiment parallelogram lindage balance crane take thing working region schematic diagram;
Accompanying drawing 5 and the equilibrium principle signal one that accompanying drawing 6 is parallelogram lindage balance crane in the present embodiment;
Accompanying drawing 7 be parallelogram lindage balance crane in the present embodiment principal arm bar and pull bar with fetching rod between be connected The structural representation at place;
Accompanying drawing 8 be parallelogram lindage balance crane in the present embodiment principal arm bar and pull bar with weight linear meter between be connected The structural representation at place;
Accompanying drawing 9 is A-A cross-sectional view in accompanying drawing 7.
Figure is numbered:
1, principal arm bar;2, pull bar;3, fetching rod;4, weight linear meter;5, master cylinder;6, auxiliary oil cylinder;7, revolving bed;8, electro-hydraulic set Standby room;9, turntable;10, pivoting support;11, gate seat;12, drivers' cab;13, load-engaging device;14, clutch shaft bearing seat;15, the second axle Bearing;16, the 3rd bearing block;17, the 4th bearing block;18, the 3rd bearing pin;19, the 4th bearing pin;20, the 3rd bearing;21, the 4th Bearing;22, steel wire rope.
Detailed description of the invention
Below in conjunction with the accompanying drawings preferred embodiment of the present utility model is described in detail, so that advantage of the present utility model Can be easier to be readily appreciated by one skilled in the art with feature.
Seeing accompanying drawing 2 to accompanying drawing 9, the parallelogram lindage balance crane in the present embodiment, it includes gate seat 11, passes through Turntable 9, the revolving bed 7 being fixedly connected on turntable 9 that pivoting support 10 is pivotably attached on gate seat 11, it is connected to revolving bed 7 On parallelogram lindage.
Gate seat 11 is the bottom bracing structure of crane, and it can be the portable gate seat being furnished with walking mechanism, it is also possible to For surface-based fixed gate seat.As accompanying drawing 2 and accompanying drawing 3 show two distinct types of gate seat.
Pivoting support 10 plays connection crane top rotating part and the effect of bottom gate seat, it is achieved crane returns entirely Turn.
Turntable 9 is connected with pivoting support 10 by slew gear.The present embodiment provides a kind of slew gear, by electronic With fluid motor-driven planetary reducer, then pass through little gear and the pivoting support 10 of planetary reducer outfan On exposed gear do gear motion, drive crane rotation.
Electro-hydraulic devices room 8, drivers' cab 12 it is also equipped with on turntable 9.Hydraulic system and automatically controlled system are installed in electro-hydraulic devices room 8 System.Drivers' cab 12 is the operating room of driver, to observe crane job district and to manipulate crane, is provided with linkage in drivers' cab 12 The electrical control equipments such as platform.
Revolving bed 7 is welded on turntable 9.Revolving bed 7 supports whole parallelogram lindage boom system.
Parallelogram lindage includes that the principal arm bar 1 being rotatably connected on revolving bed 7, middle part are rotatably connected on master removably The fetching rod 3 of armed lever 1 front end, front end rotate removably with one end of fetching rod 3 and are connected and are positioned at drawing above principal arm bar 1 Bar 2, one end rotate removably with the rear end of pull bar 2 and are connected and the rear end of the other end and principal arm bar 1 rotates removably The weight linear meter 4 connected, one end is rotatably connected on principal arm bar 1 and the other end is rotatably connected on revolving bed 7 master cylinder 5, The auxiliary oil cylinder 6 that end is rotatably connected on weight linear meter 4 and the other end is rotatably connected on principal arm bar 1;Principal arm bar 1, fetching rod 3, draw Bar 2 and weight linear meter 4 constitute a parallelogram.Master cylinder 5 is rotationally connected place, revolving bed 7 and principal arm bar on principal arm bar 1 The place of being rotationally connected, the auxiliary oil cylinder 6 place of being rotationally connected on principal arm bar 1 of 1 set gradually from front to back.The other end of fetching rod 3 Universal rotational ground connects load-engaging device 13.
Principal arm bar 1 is the main bearing carrier of whole parallelogram lindage, and pull bar 2 transmits the driving of parallelogram lindage Power.In a kind of highly preferred embodiment, pull bar 2 is circular tube structure or hole box beam structure, shakes impact slowing down wind.Main Armed lever 1, fetching rod 3, weight linear meter 4 are variable cross-section box type girder construction.
Connect on weight linear meter 4 and have ballast box (not shown in accompanying drawing), with the anterior jib of balance and load weight, make parallel four Linkage boom system pitching luffing energy consumption is lower.
In a kind of highly preferred embodiment, between principal arm bar 1 and fetching rod 3, between fetching rod 3 and pull bar 2, draw Between bar 2 and weight linear meter 4, be all rotationally connected by the bearing pin of band bearing between weight linear meter 4 and principal arm bar 1, with reduce rod member it Between frictional resistance when rotating.Bearing is rolling bearing or sliding bearing.
In the present embodiment as shown in accompanying drawing 7 to accompanying drawing 9, principal arm bar 1 has the first pin with being connected in fetching rod 3 Axle (is not drawn in accompanying drawing, refer to accompanying drawing 9), and on another, connection has removable split type clutch shaft bearing seat 14, the first pin It is rotationally connected by clutch shaft bearing (being not drawn in accompanying drawing, refer to accompanying drawing 9) between axle and clutch shaft bearing seat 14;Fetching rod 3 with The upper connection of in pull bar 2 one has the second bearing pin (being not drawn in accompanying drawing, refer to accompanying drawing 9), and on another, connection has split type Second bearing block 15, by the second bearing (being not drawn in accompanying drawing, refer to accompanying drawing 9) between the second bearing pin and the second bearing block 15 It is rotationally connected;Pull bar 2 has the 3rd bearing pin 18 with being connected in weight linear meter 4, and on another, connection has split type 3rd axle Bearing 16, is rotationally connected by the 3rd bearing 20 between the 3rd bearing pin 18 and the 3rd bearing block 16;In weight linear meter 4 and principal arm bar 1 A upper connection have the 4th bearing pin 19, on another, connection has split type 4th bearing block 17, the 4th bearing pin 19 and the 4th axle It is rotationally connected by the 4th bearing 21 between bearing 17.
The flexible elevating movement achieving principal arm bar 1 of master cylinder 5, i.e. achieves the fortune of pitching up and down of parallelogram lindage Dynamic, thus the load-engaging device 13 realizing being suspended on fetching rod 3 end moves up and down.Simultaneously master cylinder 5 make principal arm bar 1 and Whole parallelogram lindage obtains stable support.Depending on the quantity of master cylinder 5 can be according to load.
The flexible four bar parallel mechanism parallel misalignments that make of auxiliary oil cylinder 6, and affect fetching rod 3 around principal arm bar 1 by pull bar 2 Front end swings, thus the load-engaging device 13 realizing being suspended on fetching rod 3 end does the motion of before and after's luffing.The quantity of auxiliary oil cylinder 6 can Depending on according to load.
Master cylinder 5 and auxiliary oil cylinder 6 can individually actions, it is also possible to teamwork.By PLC mathematics set in advance Model and control stroke control master cylinder 5 and the speed of service of auxiliary oil cylinder 6 and stroke, just can control load-engaging device 13 according to both Fixed optimal path motion, to realize energy-conservation and efficient motion during crane carrying material.
Load-engaging device 13 is grab bucket, suspension hook or container spreader, it is achieved crawl or the suspension to material.
Balanced energy conservation principle:
The flexible arm of force making counterweight and load of auxiliary oil cylinder 6 all can ratio change, thus realizes closer counterweight balance, More lowering energy-saving during operation.Referring to the drawings 5 and accompanying drawing 6, under different amplitudes, counterbalance moment is equal to load moment: G*L1=Q* L2。
Because of parallelogram lindage feature, counterweight center of gravity arm of force change in rear portion is changed to proportionate relationship with the front end load arm of force, Therefore being arranged by the counterweight with load corresponding proportion relation, can realize under different amplitude, counterweight saves with load dynamic equilibrium Can effect.I.e. L1 Yu L2 is specific four bar proportionate relationships, therefore can arrange corresponding counterweight G and carry out balancing load Q, i.e. realize State equalising torque relational expression: G*L1=Q*L2.By above-mentioned ballast box, corresponding counterweight G is set.
Above-described embodiment only for technology of the present utility model design and feature are described, its object is to allow and is familiar with technique Personage will appreciate that content of the present utility model and implement according to this, protection domain of the present utility model can not be limited with this. All according to this utility model spirit made equivalence change or modify, all should contain protection domain of the present utility model it In.

Claims (10)

1. a parallelogram lindage balance crane, it is characterised in that: it includes gate seat (11), by pivoting support (10) pivot Turn be connected on described gate seat (11) turntable (9), the revolving bed (7) being fixedly connected on described turntable (9), be connected to described Parallelogram lindage on revolving bed (7), described parallelogram lindage includes the master being rotatably connected on described revolving bed (7) Armed lever (1), middle part are rotatably connected on the fetching rod (3) of described principal arm bar (1) front end, front end and described fetching rod removably (3) one end rotates removably and connects and be positioned at the pull bar (2) of described principal arm bar (1) top, one end and described pull bar (2) Rear end rotate connection removably and the other end rotates removably with the rear end of described principal arm bar (1) counterweight being connected Bar (4), one end are rotatably connected on described principal arm bar (1), and above and the other end is rotatably connected on the master cylinder on described revolving bed (7) (5), one end is rotatably connected on described weight linear meter (4) and the other end is rotatably connected on the auxiliary oil cylinder on described principal arm bar (1) (6), described principal arm bar (1), fetching rod (3), pull bar (2) and weight linear meter (4) constitute a parallelogram;Described master cylinder (5) place of being rotationally connected on principal arm bar (1), described revolving bed (7) are rotationally connected place, described auxiliary oil cylinder with principal arm bar (1) (6) place of being rotationally connected on principal arm bar (1) sets gradually from front to back;The other end universal rotational of described fetching rod (3) Ground connects load-engaging device (13);By master cylinder (5) described in PLC setup control and the speed of service of auxiliary oil cylinder (6) and stroke.
Parallelogram lindage balance crane the most according to claim 1, it is characterised in that: described principal arm bar (1) with Between fetching rod (3), between fetching rod (3) and pull bar (2), between pull bar (2) and weight linear meter (4), weight linear meter (4) and principal arm bar (1) all it is rotationally connected by the bearing pin of band bearing between.
Parallelogram lindage balance crane the most according to claim 2, it is characterised in that: described principal arm bar (1) with The upper connection of in fetching rod (3) one has the first bearing pin, and on another, connection has removable split type clutch shaft bearing seat (14), It is rotationally connected by clutch shaft bearing between described first bearing pin and clutch shaft bearing seat (14);
Described fetching rod (3) has the second bearing pin with being connected in pull bar (2), and on another, connection has split type second Bearing block (15), is rotationally connected by the second bearing between described second bearing pin and the second bearing block (15);
Described pull bar (2) has the 3rd bearing pin (18) with being connected in weight linear meter (4), and on another, connection has split type 3rd bearing block (16), is rotationally connected by the 3rd bearing (20) between described 3rd bearing pin (18) and the 3rd bearing block (16);
Described weight linear meter (4) has the 4th bearing pin (19) with being connected in principal arm bar (1), and on another, connection has split Formula the 4th bearing block (17), is rotated even by the 4th bearing (21) between described 4th bearing pin (19) and the 4th bearing block (17) Connect.
Parallelogram lindage balance crane the most according to claim 2, it is characterised in that: described bearing is the axis of rolling Hold or sliding bearing.
Parallelogram lindage balance crane the most according to claim 1, it is characterised in that: described pull bar (2) is circle Tubular construction or hole box beam structure.
Parallelogram lindage balance crane the most according to claim 1, it is characterised in that: described principal arm bar (1), take Thing bar (3), weight linear meter (4) are variable cross-section box type girder construction.
Parallelogram lindage balance crane the most according to claim 1, it is characterised in that: described load-engaging device (13) For grab bucket, suspension hook or container spreader.
Parallelogram lindage balance crane the most according to claim 1, it is characterised in that: on described weight linear meter (4) Connect and have ballast box.
Parallelogram lindage balance crane the most according to claim 1, it is characterised in that: described turntable (9) is upper also Electro-hydraulic devices room (8), drivers' cab (12) are installed.
Parallelogram lindage balance crane the most according to claim 1, it is characterised in that: described gate seat (11) is It is furnished with the portable gate seat of walking mechanism or surface-based fixed gate seat.
CN201620571799.4U 2016-06-15 2016-06-15 Parallel four -bar mechanism balance crane Active CN205662257U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620571799.4U CN205662257U (en) 2016-06-15 2016-06-15 Parallel four -bar mechanism balance crane

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Application Number Priority Date Filing Date Title
CN201620571799.4U CN205662257U (en) 2016-06-15 2016-06-15 Parallel four -bar mechanism balance crane

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105819346A (en) * 2016-06-15 2016-08-03 江苏振东港口机械制造有限公司 Balance crane with parallel four-bar mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105819346A (en) * 2016-06-15 2016-08-03 江苏振东港口机械制造有限公司 Balance crane with parallel four-bar mechanism

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