CN205616461U - Double linkage hoist has surpassed straining device and hoist - Google Patents

Abstract

The utility model relates to a double linkage hoist has surpassed straining device and hoist, the double linkage hoist has surpassed straining device and has included: the double linkage hoist, with the arm head assembly pulley that has surpassed the assembly pulley and be connected with the davit arm head that has surpassed device end connection, behind the wire rope pile warp arm head assembly pulley that the double linkage hoist was drawn forth, walk around again and has surpassed the assembly pulley, then fix on the arm head assembly pulley, the double linkage hoist is realized having surpassed the device through receiving and releasing of control wire rope and is moved for the expansion and the tensioning of davit. This kind of straining device can come realize having surpassed the device through receiving and releasing of double linkage winch control wire rope for the expansion and tensioning action of davit, can realize two wire rope's the work of receiving and releasing simultaneously on same hoisting mechanism, surpassed the hoist by two double linkage hoist replacements and coordinated a plurality of hydro -cylinders, but greatly reduced has surpassed the manufacturing and the installation cost of device, and convenient operation, synchronism height, flexibility are strong in addition.

Description

Double-linkage elevator setting-up strainer and crane

Technical field

The utility model relates to technical field of engineering machinery, particularly relates to a kind of Double-linkage elevator and surpasses Play strainer and crane.

Background technology

Setting-up is one of important feature part of mobilecrane, and the use of super lifting device can change It is apt to the state of crane arm stress and crane arm lifting performance and complete machine stability are greatly improved, for Lift crane lifting performance and complete machine stability play the role of important, are in particular in following Two aspects: (1) applies the active force of a luffing plane in crane arm end, overcomes crane arm Deformation in luffing plane, reduces the additional bending moment on crane arm dangerouse cross-section, thus reduces Stress；(2) support is added in plane of rotation to crane arm, thus be greatly reduced crane arm In the deformation that plane of rotation produces, greatly strengthen the lateral stability when lift heavy state for the crane arm Property.

Effect in terms of in order to realize super lifting device two above, super lifting device is in the course of the work Necessarily be in tensioning state, and the embodiment of setting-up tensioning is most important.Current large-tonnage is complete The most mode using elevator to be placed in setting-up of Terrain Cranes realizes the tensioning of super lifting device, As it is shown in figure 1, two elevators are individually placed to the end of setting-up, by folding and unfolding steel wire rope and The cooperation of locking oil cylinder realizes the tensioning of setting-up, and setting-up launches oil cylinder and amplitude oil cylinder realizes simultaneously The folding and unfolding of super lifting device, steel wire rope 1a is walked around arm head pulley 3a by setting-up elevator 2a releasing and fixes On setting-up end hinge 4a, form setting-up strainer.When super lifting device luffing is deployed into one After determining angle, after setting-up elevator 2a recovery steel wire rope 1a reaches certain tensioning, setting-up elevator Lockable mechanism 5a starts the tensioning work that ratchet locking completes super lifting device.

But this kind of super lifting device needs by two setting-up elevators, and coordinate setting-up luffing oil Cylinder, expansion oil cylinder and tensioning hydro-cylinder, owing to the sequencing of each cylinder action is relatively stricter, Causing that action is loaded down with trivial details, time and effort consuming, operating personnel are difficult to operation, and to hydraulic control system Synchronism require height；Quantity additionally, due to elevator and oil cylinder is too much, in less space Parts layout is tight, causes super lifting device high cost, and maintenance difficult expense is too high.

Utility model content

The purpose of this utility model is to propose a kind of Double-linkage elevator setting-up strainer and lifting Machine, can be realized folding and unfolding and the tensioning of super lifting device by Double-linkage elevator and assembly pulley.

For achieving the above object, the utility model first aspect provides a kind of Double-linkage elevator and surpasses Play strainer, comprising: the setting-up that Double-linkage elevator 1 is connected with super lifting device 6 end is sliding Wheels 4 and the arm head assembly pulley 5 being connected with arm arm head, described Double-linkage elevator 1 is drawn After arm head assembly pulley 5 described in steel wire rope 3 pile warp, further around crossing described setting-up assembly pulley 4, then Being fixed on described arm head assembly pulley 5, described Double-linkage elevator 1 is by control steel wire rope 3 Folding and unfolding realizes described super lifting device 6 relative to the expansion of described arm and tensioning action.

Further, also including lockable mechanism 2, described lockable mechanism 2 is arranged on described duplex The side of dynamic elevator 1, is used for when described super lifting device 6 tensioning to described Double-linkage elevator 1 Carry out locking, to realize described steel wire rope 3 between described super lifting device 6 and described arm Tensioning.

Further, it is provided with one between two elevators in parallel of described Double-linkage elevator 1 to turn The dynamic circular bulkheads 21 with ratchet, described lockable mechanism 2 is by holding out against described circular bulkheads The ratchet of 21 realizes locking action.

Further, described lockable mechanism 2 specifically includes: locking oil cylinder 22, described locking oil One end of cylinder 22 for inserting the spine of described circular bulkheads 21 when described locking oil cylinder 22 stretches out In tooth.

Further, described lockable mechanism 2 also includes amplitude oil cylinder 26, described amplitude oil cylinder On the 26 cylinder barrel outer walls being arranged on described locking oil cylinder 22, can be made described by expanding-contracting action Locking oil cylinder 22 luffing.

Further, the cylinder barrel outer wall of described locking oil cylinder 22 is additionally provided with flexible member 25, For straining described locking oil cylinder 22, to prevent described locking oil cylinder 22 and described ratchet.

Further, also including: stroke detection element 23, described stroke detection element 23 sets Putting on described locking oil cylinder 22, the cylinder rod that can detect described locking oil cylinder 22 stretches out stroke Whether reach locking station.

Further, described Double-linkage elevator 1 and described lockable mechanism 2 are arranged at turntable 7 On.

Further, also including pulling force sensor 8, described pulling force sensor 8 is arranged on described On stay cord between super lifting device 6 end and described setting-up assembly pulley 4.

For achieving the above object, the utility model second aspect provides a kind of crane, including Double-linkage elevator setting-up strainer described in above-described embodiment.

Based on technique scheme, the Double-linkage elevator setting-up tensioning device of the utility model embodiment Structure, by arranging Double-linkage elevator, and the steel wire rope pile warp arm head pulley drawn at linkage elevator It after group, further around crossing setting-up assembly pulley, is then attached on arm head assembly pulley, duplex can be passed through The folding and unfolding of dynamic rolling control steel wire rope realizes that super lifting device moves relative to expansion and the tensioning of arm Make, same hoisting mechanism can realize the folding and unfolding work of two steel wire ropes simultaneously.By double Linkage elevator replaces two setting-up elevators to coordinate multiple oil cylinder, can be substantially reduced the system of super lifting device Make and installation cost, and easy to operate, synchronism is high, flexibility is strong.

Brief description

Accompanying drawing described herein is used for providing being further appreciated by of the present utility model, constitutes this A part for application, schematic description and description of the present utility model is used for explaining this practicality Novel, it is not intended that to improper restriction of the present utility model.In the accompanying drawings:

Fig. 1 is the structural representation of the setting-up strainer of hoister in large tonnage in prior art；

Fig. 2 is the side view of an embodiment of Double-linkage elevator setting-up strainer of the present invention；

Fig. 3 is the top view of an embodiment of Double-linkage elevator setting-up strainer of the present invention；

Fig. 4 is an embodiment of lockable mechanism in Double-linkage elevator setting-up strainer of the present invention Structural representation.

Detailed description of the invention

The utility model described further below.In the following paragraphs, reality is defined in more detail Execute the different aspect of example.The each side so limiting can be with any other aspect or multiple Aspect combines, and not can be combined unless explicitly stated otherwise.Especially it is considered to be preferably or favourable Any feature can one or more with other be considered as preferred or favourable combinations of features.

Term is merely for convenience retouches for " first ", " second " etc. occurring in the utility model State, to distinguish the different building blocks with same names, be not offered as priority or primary-slave relation.

Of the present utility model describe in, it is to be understood that term " on ", D score, The side of the instruction such as "front", "rear", "left", "right", " vertically " and " level " Position or position relationship, for based on orientation shown in the drawings or position relationship, are for only for ease of description The utility model, rather than instruction or hint indication device must have specific orientation, with Specific azimuth configuration and operation, therefore it is not intended that limit to the utility model protection domain System.

In the embodiment shown in Fig. 2 to Fig. 4, the utility model provides a kind of Double-linkage volume Raise setting-up strainer, comprising: it is super that Double-linkage elevator 1 is connected with super lifting device 6 end Play assembly pulley 4 and the arm head assembly pulley 5 being connected with arm (not shown in FIG.) arm head, double After the steel wire rope 3 pile warp arm head assembly pulley 5 that linkage elevator 1 is drawn, further around setting-up assembly pulley excessively 4, it is then attached on arm head assembly pulley 5, Double-linkage elevator 1 is by controlling the receipts of steel wire rope 3 Put and realize that super lifting device 6, can be at same volume relative to the expansion of arm and tensioning action Raise the folding and unfolding work that can simultaneously realize two steel wire ropes in mechanism.

In the structure shown here, setting-up assembly pulley 4 and arm head assembly pulley 5 can form many multiplying powers assembly pulley, Engineering staff can select suitable multiplying power according to the demand of actual lift heavy for assembly pulley.And, The pulling rope length being connected between setting-up assembly pulley 4 with super lifting device 6 end is constant, arm head pulley The length of the stay cord being connected between group 5 and arm head is also constant, in the whole action of super lifting device 6 During, the length of the steel wire rope 3 only connecting between setting-up assembly pulley 4 and arm head assembly pulley 5 Degree is changing.

The Double-linkage elevator setting-up strainer of the utility model embodiment, by arranging Double-linkage Elevator, and after the steel wire rope pile warp arm head assembly pulley that linkage elevator is drawn, sliding further around crossing setting-up Wheels, are then attached on arm head assembly pulley, can realize on same hoisting mechanism simultaneously Article two, the folding and unfolding work of the corresponding steel wire rope of side super lifting device, and realize many times of setting-up by assembly pulley Rate tensioning, thus realize super lifting device relative to the expansion of arm and tensioning action.By Double-linkage After elevator replaces two setting-up elevators of the prior art to coordinate multiple oil cylinder, it is not necessary to setting-up is set Amplitude oil cylinder and setting-up tensioning hydro-cylinder, can realize that super lifting device relative to the expansion of arm and is opened Tight action, can be substantially reduced manufacture and the installation cost of super lifting device, and easy to operate, same Step property is high, flexibility is strong.

In another embodiment of the present utility model, as it is shown on figure 3, Double-linkage elevator setting-up Strainer also includes lockable mechanism 2, and lockable mechanism 2 is arranged on the side of Double-linkage elevator 1, For locking being carried out to Double-linkage elevator 1 when super lifting device 6 tensioning, to realize super lifting device The tensioning of the steel wire rope 3 between 6 and arm requires.For example, lockable mechanism 2 is positioned at Double-linkage Elevator 1 either side vertically, or it is positioned at the left side of Double-linkage elevator 1 or right side (to scheme On the basis of 3).Preferably, after Double-linkage elevator 1 and lockable mechanism 2 are arranged on turntable 7 On afterbody.

The structure shape of the lockable mechanism 2 that a kind of those skilled in the art presented below can use Formula, be provided with between two elevators in parallel of Double-linkage elevator 1 unitary rotation with ratchet Circular bulkheads 21, parallel connection refers to be arranged side by side along axis, and lockable mechanism 2 is in steel wire rope 3 folding and unfolding After putting in place, realize locking action by holding out against the ratchet of circular bulkheads 21.

Specifically, as shown in Figure 4, lockable mechanism 2 includes: locking oil cylinder 22, locking oil cylinder One end of 22 is arranged in the mounting seat of Double-linkage elevator 1 side, and the other end is at locking oil Cylinder 22 snaps in the ratchet of circular bulkheads 21 when stretching out, the tache motorice of locking oil cylinder 22 can be The cylinder barrel of locking oil cylinder 22 or piston rod.In the diagram, the tache motorice of locking oil cylinder 22 to On be obliquely installed, it is simple to meet install demand.In addition, those skilled in the art can be at lock Only oil cylinder 22 connects extension bar 24 near one end of circular bulkheads 21, makes extension bar 24 snap in In ratchet, to obtain bigger movement travel.

It owing to circular bulkheads 21 and locking oil cylinder 22 can exist certain error when mounted, is In ensureing the ratchet that locking oil cylinder 22 can snap in circular bulkheads 21 exactly when stretching out, Lockable mechanism 2 may also include amplitude oil cylinder 26, and the two ends of amplitude oil cylinder 26 are connected to base On the cylinder barrel outer wall of seat and locking oil cylinder 22, locking oil cylinder 22 can be made to become by expanding-contracting action Width is to adjust position.

Preferably, the cylinder barrel outer wall of locking oil cylinder 22 is additionally provided with flexible member 25, for example, draws Spring, the two ends of flexible member 25 are connected on the cylinder barrel of pedestal and locking oil cylinder 22, use In tension locking oil cylinder 22, preventing locking oil cylinder 22 and ratchet, thus ensure locking The reliability of oil cylinder 22 locking, it is to avoid winching barrel 11 is rotated further and brings to crane job Danger.

In order to know the lockup state of locking oil cylinder 22, then need to judge whether extension bar 24 blocks Entering in ratchet, to this end, in another embodiment, Double-linkage elevator setting-up strainer also wraps Including stroke detection element 23, stroke detection element 23 is arranged on locking oil cylinder 22, Neng Goujian The cylinder rod surveying locking oil cylinder 22 stretches out whether stroke reaches locking station.For example, shown in Fig. 4 Embodiment in, stroke detection element 23 is fixed on cylinder barrel, and detection region and piston rod can The region stretched out is corresponding, can detect the displacement of piston rod in real time.

In another embodiment, Double-linkage elevator setting-up strainer also includes pulling force sensor 8, pulling force sensor 8 is arranged on the stay cord between super lifting device 6 end and setting-up assembly pulley 4, Can interpolate that the current tensioning state of setting-up, to judge the winching barrel in Double-linkage elevator 1 11 opportunitys stopping operating.Once steel wire rope 3 reaches predetermined tensile force, winching barrel 11 Then stop continuing tensioning, there is the hidden danger of overload to avoid steel wire rope 3 tensioning excessive, or Steel wire rope 3 excessively relaxes and can not effectively strain arm.

In order to make those skilled in the art clearly understand the utility model Double-linkage elevator The operation principle of setting-up strainer, is carried out below in conjunction with the embodiment shown in Fig. 2 to Fig. 4 Elaborate.After super lifting device 6 is installed, Double-linkage elevator 1 rotates recovery steel wire rope counterclockwise 3 by super lifting device 6 pull-up, and setting-up launches oil cylinder expansion simultaneously, when super lifting device 6 is perpendicular to During arm, setting-up expansion oil cylinder, by super lifting device 6 locking, completes the expansion work of super lifting device 6 Make.

Then, Double-linkage elevator 1 turns clockwise and discharges steel wire rope 3, coordinates arm to complete to stretch Arm is to appointment brachium.Then carrying out setting-up tensioning work, Double-linkage elevator 1 rotates back to counterclockwise Receive steel wire rope 3, make the steel wire rope 3 between super lifting device 1 and arm by many multiplying powers assembly pulley Tensioning, now lockable mechanism 2 works Double-linkage elevator 1 locking, to meet tensioning requirement, The value of thrust control that the tensioning degree of steel wire rope 3 is detected by pulling force sensor 8.

When super lifting device 6 reclaims, lockable mechanism 2 discharges Double-linkage elevator 1, and Double-linkage is rolled up Raise 1 and rotate recovery steel wire rope 3 counterclockwise, after completing the work of contracting arm, Double-linkage elevator 1 up time Pin rotates release steel wire rope 3, and super lifting device 6 relies on Action of Gravity Field, falls back to above arm. It can thus be seen that moved by the positive and negative rotation of Double-linkage elevator 1 and the locking of lockable mechanism 2 Work can complete folding and unfolding and the tensioning work of super lifting device 6.

Additionally, the utility model provides a kind of crane, including double described in above-described embodiment Linkage elevator setting-up strainer.Preferably, this crane is full Terrain Cranes.By duplex Dynamic elevator replaces setting-up elevator of the prior art and multiple oil cylinders, can be substantially reduced super lifting device Cost, thus reduce the cost of crane, and only pass through Double-linkage elevator positive and negative rotation and Lockable mechanism, can realize folding and unfolding and the tensioning of super lifting device, both sides super lifting device action same Step property is preferable, makes crane tool for characteristic easy to operate, that synchronism is high and flexibility is strong.

Above to a kind of Double-linkage elevator setting-up strainer provided by the utility model and rise Heavy-duty machine is described in detail.Specific embodiment used herein is to of the present utility model former Reason and embodiment are set forth, and the explanation of above example is only intended to help and understands this reality By novel method and core concept thereof.It should be pointed out that, the ordinary skill for the art For personnel, on the premise of without departing from the utility model principle, can also be to the utility model Carrying out some improvement and modification, these improve and modify and also fall into the utility model claim In protection domain.

Claims (10)

1. a Double-linkage elevator setting-up strainer, it is characterised in that include: Double-linkage Setting-up assembly pulley (4) that elevator (1) is connected with super lifting device (6) end and with arm arm The arm head assembly pulley (5) that head connects, the steel wire rope (3) that described Double-linkage elevator (1) is drawn After arm head assembly pulley (5) described in pile warp, further around crossing described setting-up assembly pulley (4), then solid Being scheduled on described arm head assembly pulley (5), described Double-linkage elevator (1) is by control steel wire rope (3) folding and unfolding realizes described super lifting device (6) relative to the expansion of described arm and tensioning Action.

2. Double-linkage elevator setting-up strainer according to claim 1, its feature exists In, also including lockable mechanism (2), described lockable mechanism (2) is arranged on described Double-linkage volume Raise the side of (1), be used for when described super lifting device (6) tensioning to described Double-linkage elevator (1) locking is carried out, to realize the described steel between described super lifting device (6) and described arm The tensioning of cord (3).

3. Double-linkage elevator setting-up strainer according to claim 2, its feature exists Be provided with between two elevators in parallel of, described Double-linkage elevator (1) unitary rotation with The circular bulkheads (21) of ratchet, described lockable mechanism (2) is by holding out against described circular bulkheads (21) Ratchet realize locking action.

4. Double-linkage elevator setting-up strainer according to claim 3, its feature exists In described lockable mechanism (2) specifically includes: locking oil cylinder (22), described locking oil cylinder (22) One end for inserting described circular bulkheads (21) when described locking oil cylinder (22) is stretched out In ratchet.

5. Double-linkage elevator setting-up strainer according to claim 4, its feature exists In described lockable mechanism (2) also includes amplitude oil cylinder (26), described amplitude oil cylinder (26) It is arranged on the cylinder barrel outer wall of described locking oil cylinder (22), can be made by expanding-contracting action described Locking oil cylinder (22) luffing.

6. Double-linkage elevator setting-up strainer according to claim 4, its feature exists In being additionally provided with flexible member (25) on the cylinder barrel outer wall of described locking oil cylinder (22), be used for Strain described locking oil cylinder (22), to prevent described locking oil cylinder (22) from taking off with described ratchet Open.

7. the Double-linkage elevator setting-up strainer according to claim 4～6 is arbitrary, its It is characterised by, also includes: stroke detection element (23), described stroke detection element (23) It is arranged on described locking oil cylinder (22), the cylinder rod of described locking oil cylinder (22) can be detected Stretch out whether stroke reaches locking station.

8. Double-linkage elevator setting-up strainer according to claim 2, its feature exists In described Double-linkage elevator (1) and described lockable mechanism (2) are arranged on turntable (7).

9. the Double-linkage elevator setting-up strainer according to claim 1～6 is arbitrary, its Being characterised by, also including pulling force sensor (8), described pulling force sensor (8) is arranged on institute State on the stay cord between super lifting device (6) end and described setting-up assembly pulley (4).

10. a crane, it is characterised in that include that claim 1～9 is arbitrary described Double-linkage elevator setting-up strainer.