CN106115516B - Crane, super lifting device and its pretension steel wire rope control method and system - Google Patents

Crane, super lifting device and its pretension steel wire rope control method and system Download PDF

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Publication number
CN106115516B
CN106115516B CN201610795150.5A CN201610795150A CN106115516B CN 106115516 B CN106115516 B CN 106115516B CN 201610795150 A CN201610795150 A CN 201610795150A CN 106115516 B CN106115516 B CN 106115516B
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CN
China
Prior art keywords
setting
rope
steel wire
pretension
elevator
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CN201610795150.5A
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Chinese (zh)
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CN106115516A (en
Inventor
陈晓敏
闫俊慧
刘海波
米勇
宋帅
帖晓春
Original Assignee
太原重型机械集团工程技术研发有限公司
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Priority to CN201610795150.5A priority Critical patent/CN106115516B/en
Publication of CN106115516A publication Critical patent/CN106115516A/en
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Publication of CN106115516B publication Critical patent/CN106115516B/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes 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
    • B66C23/62Constructional features or details
    • B66C23/72Counterweights or supports for balancing lifting couples
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00Other constructional features or details
    • B66C13/16Applications of indicating, registering, or weighing devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00Other constructional features or details
    • B66C13/18Control systems or devices
    • B66C13/22Control systems or devices for electric drives
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes 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
    • B66C23/62Constructional features or details

Abstract

The present invention discloses the pretension steel wire rope control method and system of a kind of super lifting device.Wherein, control method includes:11) the current pulling force of two pretension steel wire ropes (7) of crane is detected;12) when current pulling force is more than pretension value, the rope stretching length of two pretension steel wire ropes (7) is detected;13) according to rope stretching length, judge whether the rope stretching length difference of two pretension steel wire ropes (7) is less than the first setting value, the first setting value is positive number, and judged result is when being, into step 14);14) setting-up elevator (6) corresponding to the larger pretension steel wire rope (7) of rope stretching length is controlled to implement serving operation, and serving amount is equal with rope stretching length difference.Such scheme can solve the problems, such as that the setting-up supports in left and right existing for power control methods such as crane use and principal arm unbalance stress and potential safety hazard are larger.Invention additionally discloses a kind of crane and super lifting device.

Description

Crane, super lifting device and its pretension steel wire rope control method and system

Technical field

The present invention relates to technical field of crane equipment, more particularly to a kind of crane, super lifting device and its pretension steel wire rope Control method and system.

Background technology

Crane is a kind of relatively conventional heavy duty equipment, is widely used in the lifting work such as building, mining site, harbour Make in more environment.With the progress and expanding economy of society, in order to better adapt to different workplaces, crane Species it is also more and more.

It is known that the stretching, extension of its principal arm is longer at work for crane, in hoisting heavy, amount of deflection is bigger, and this is not only limited The crane capacity of crane, but also potential safety hazard can be brought.In order to reduce amount of deflection during principal arm lifting, crane is improved Can, crane would generally install super lifting device additional.

Fig. 1 and 2 is refer to, Fig. 1 and 2 shows a kind of crane with super lifting device.In crane shown in figure, surpass Lifting device includes can symmetrical two setting-up supports 1 for being distributed in the both sides of principal arm 3.Two setting-up supports 1 are in cocked cylinder 2 Propped under effect on the side surface of principal arm 3.At the same time, the setting-up being connected with chassis 4 with the free end of setting-up support 1 Drawstring 5 is in tension.The free end of setting-up support 1 is provided with setting-up elevator 6, and the pretension steel wire rope 7 in setting-up elevator 6 connects It is connected on the top of principal arm 3.Before operation, two setting-up supports 1 need to be deployed into the presence of oil cylinder 8 is deployed pre- crane If angle, then need setting-up elevator 6 that pretension steel wire rope 7 is pulled into Pre strained state.Super lifting device is adjusted to after working condition, Principal arm 3 adjusts its angle of inclination by amplitude oil cylinder 9 again and carries out follow-up slinging work.

At present, the regulation and control result of super lifting device is equal and reach with the pulling force of the pretension steel wire rope 7 on two setting-up supports 1 It is defined to pretension value.This control methods can be referred to as to wait power control methods.Cause two pretensions in left and right etc. power control methods Stress is equal in the unloaded state for steel wire rope 7, although can effectively strengthen the lifting performance of principal arm 3, effect is limited.We To know, the pulling force of the two pretension steel wire ropes 7 in left and right is identical, does not represent both and is in the state for being arranged symmetrically in the both sides of principal arm 3, That is, wait power control methods that principal arm 3, setting-up support 1 can not be caused to be in optimal stress.Because crane is in work During work, influenceed by environment such as temperature, sunshines and principal arm 3 is flexible influences, the deformation of principal arm 3 and super lifting device can be further Increase, and then make it that the asymmetry of two setting-up supports 1 is more prominent, eventually stress is not during lifting due to both Principal arm 3 occurs and bends, or even situation about fractureing occurs.It can be seen that using etc. the cranes of power control methods remain Larger potential safety hazard.

Based on this, two setting-up supports 1 of crane how are enabled more to be symmetrically arranged at the both sides of principal arm 3, And then to reduce the deformation of above-mentioned part, the safe and stable work for crane is significant, still, current etc. Power control methods can not but meet above-mentioned requirements.

The content of the invention

The present invention discloses a kind of pretension steel wire rope control method of super lifting device, to solve the power regulation and control sides such as crane use The problem of setting-up support in left and right existing for formula is with principal arm unbalance stress and larger potential safety hazard.

In order to solve the above technical problems, the present invention is disclosed directly below technical scheme:

The pretension steel wire rope control method of super lifting device, including:

11) the current pulling force of two pretension steel wire ropes of crane is detected;

12) when the current pulling force is more than pretension value, the rope stretching length of two pretension steel wire ropes is detected;

13) according to the rope stretching length, judge whether the rope stretching length difference of two pretension steel wire ropes sets less than first Definite value, first setting value are positive number, and judged result is when being, into step 14);

14) setting-up elevator corresponding to the larger pretension steel wire rope of the rope stretching length is controlled to implement serving operation, And serving amount is equal with the rope stretching length difference.

Preferably, in the above method, in addition to:

When the rope stretching length difference is more than or equal to the first setting value, alarm.

Preferably, in the above method, step 14) includes:

31) the current serving radius of the setting-up elevator is detected;

32) according to the rope stretching length difference and the current serving radius calculation setting-up elevator rotational angle;

33) setting-up elevator is controlled to be run according to the rotational angle.

The pretension steel wire rope control system of super lifting device, including:

First detection unit, the current pulling force of two pretension steel wire ropes for detecting the crane;

First judging unit, for judging whether the current pulling force is more than pretension value;

Second detection unit, for when the current pulling force is more than the pretension value, detecting two pretension steel wires The rope stretching length of rope;

Second judging unit, for judging whether the rope stretching length difference of two pretension steel wire ropes is less than the first setting Value, the setting value is positive number;

Control unit, for when the rope stretching length difference is less than first setting value, control the rope stretching length compared with Setting-up elevator corresponding to the big pretension steel wire rope implements serving operation, and serving amount is equal with the rope stretching length difference.

Preferably, above-mentioned control system also includes alarm unit;Wherein:

The alarm unit is used to be more than or equal to the first setting value alarm in the rope stretching length difference.

Preferably, in above-mentioned control system, described control unit includes:

Detection sub-unit, for detecting the current serving radius of the setting-up elevator;

Computation subunit, for the setting-up elevator according to the rope stretching length difference and the current serving radius calculation Rotational angle;

Subelement is controlled, for controlling the setting-up elevator to be run according to the rotational angle.

Super lifting device, including can be symmetrically arranged at the principal arm both sides of crane two pretension steel wire ropes and for point Two setting-up elevators of the pretension steel wire rope are not wound;Also include:

As above any described pretension steel wire rope control system.

Preferably, in above-mentioned super lifting device, the setting-up elevator includes lockable mechanism;The lockable mechanism include ratchet, Tensioning hydro-cylinder and lock pin oil cylinder;Wherein:

The ratchet is arranged on the reel ends of the setting-up elevator;

The cylinder body of the tensioning hydro-cylinder and the mounting bracket of the setting-up elevator are hinged, and the piston rod of the tensioning hydro-cylinder can be Under stretching state the rope spacing cooperation of rotation direction is put with the ratchet in the reel;

The cylinder body of the lock pin oil cylinder is hinged with the mounting bracket, piston rod and the tensioning hydro-cylinder of the lock pin oil cylinder Cylinder body be hinged, for driving the tensioning hydro-cylinder to swing so that it switches between position in operating position and avoiding.

Preferably, above-mentioned super lifting device also includes the 3rd judging unit;3rd judging unit be used to judging it is described go out Whether rope length difference is more than second setting value, and second setting value is less than first setting value;

Described control unit is connected with the 3rd judging unit;Wherein:

Described control unit is used for when the rope stretching length difference is more than second setting value, controls the tensioning hydro-cylinder Piston rod bounce back and start the setting-up elevator motor or hydraulic motor work with implement to put rop exercise make;

Described control unit is used for when the rope stretching length difference is less than or equal to second setting value, described of control The piston rod of locking oil cylinder is stretched out to promote the spool turns rope closing.

Crane, including:

Super lifting device described in above-mentioned any one

The technique effect that the control method of pretension steel wire rope disclosed by the invention has is as follows:

In control method disclosed by the invention, in the case where two pretension steel wire ropes of crane are in Pre strained state, by two The rope stretching length adjustment of pretension steel wire rope is equal, and in such cases, two pretension steel wire ropes on setting-up support can be isometric Ground is tensed in the both sides of principal arm, and then two pretension steel wire ropes can be caused to be symmetrically dispersed in the both sides of principal arm, and this is one kind etc. Long control strategy, enable to three to be in preferable stress, and then cause the deformation of two setting-up supports and principal arm It is smaller, certainly, it also can preferably resist influence of the environment to crane stress.With described in background technology etc. power control methods phase Than, control method disclosed by the invention can solve crane using etc. setting-up support in left and right existing for power control methods and principal arm by The problem of power inequality and larger potential safety hazard.

Brief description of the drawings

Technical scheme in order to illustrate the embodiments of the present invention more clearly or in background technology, below will be to embodiment or the back of the body The required accompanying drawing used is briefly described in the description of scape technology, it should be apparent that, for those of ordinary skill in the art Speech, without having to pay creative labor, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is a kind of structural representation of the crane with super lifting device;

Fig. 2 is Fig. 1 top view;

Fig. 3 is the schematic flow sheet of the pretension steel wire rope control method for the super lifting device that the embodiment of the present invention one provides;

Fig. 4 is the schematic flow sheet that the control setting-up elevator that the embodiment of the present invention one provides implements serving operation;

Fig. 5 is a kind of structural representation of the pretension steel wire rope control system for super lifting device that the embodiment of the present invention two provides Figure;

Fig. 6 is the structural representation of the pretension steel wire rope control system for another super lifting device that the embodiment of the present invention two provides Figure;

Fig. 7 is a kind of structural representation for the control unit that the embodiment of the present invention two provides;

Fig. 8 is the control structure schematic diagram of setting-up elevator provided in an embodiment of the present invention.

Description of reference numerals:

1- setting-ups support, 2- cocked cylinders, 3- principal arms, 4- chassis, 5- setting-ups drawstring, 6- setting-up elevators, 61- reels, 62- Ratchet, 63- tensioning hydro-cylinders, 631- piston rods, 632- cylinder bodies, 633- poles level sensor, 634- poles level sensor, 64- lock pins oil Cylinder, 641- piston rods, 642- cylinder bodies, 643- poles level sensor, 644- poles level sensor, 7- pretensions steel wire rope, 8- expansion oil cylinder, 9- amplitude oil cylinders, 10- drivings oil sources, 11- hydraulic motors, 12- encoders;

The detection units of 100- first, the judging units of 200- first, the detection units of 300- second, the judging units of 400- second, 500- control units, 510- detection sub-units, 520- computation subunits, 530- controls subelement, 600- alarm units.

Embodiment

In order that those skilled in the art more fully understand the technical scheme in the present invention, below in conjunction with of the invention real The accompanying drawing in example is applied, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described implementation Example is only the part of the embodiment of the present invention, rather than whole embodiments.It is general based on the embodiment in the present invention, this area The every other embodiment that logical technical staff is obtained under the premise of creative work is not made, should all belong to guarantor of the present invention The scope of shield.

Embodiment one

Please on Fig. 1 and Fig. 2 basis, with reference to reference to figure 3, the embodiment of the present invention discloses a kind of pretension of super lifting device Steel wire rope control method.Disclosed control method, comprises the following steps:

S100, detect crane two pretension steel wire ropes current pulling force.

As stated in the Background Art, two pretension steel wire ropes 7 on two setting-up supports 1 super lifting device regulate and control complete when, Need to be in Pre strained state.Step S100 sets detection means to detect pretension steel wire rope 7 generally on every pretension steel wire rope 7 Current pulling force.Detection means is usually pulling force sensor.

S200, judge whether current pulling force is more than pretension value.

Step S200 judges whether the current pulling force on every pretension steel wire rope 7 is big by step S100 testing result In pretension value, only when the current pulling force of pretension steel wire rope 7 is more than pretension value, Pre strained state is just can ensure that, follow-up regulation is It is significant.If when the current pulling force of pretension steel wire rope 7 is less than or equal to pretension value, should continue to manipulate corresponding to setting-up volume 6 servings are raised to make further pretension.

In this step, when judged result is yes, it is, when current pulling force is more than pretension value, just into step S300.

S300, the rope stretching length for detecting two pretension steel wire ropes.

Step S300 detects the rope stretching length of two pretension steel wire ropes 7 by detection means.So-called rope stretching length refers to Be that the reel of setting-up elevator 6 puts the length of rope, corresponding with rope stretching length is remaining rope length degree, that is, is still wrapped around on reel The length of pretension steel wire rope 7, rope stretching length is bigger, and remaining rope length degree then can be smaller.

Detect rope length degree mode have it is a variety of, can reel 61 end face center set encoder 12, such as Fig. 8 institutes Show.Turnning circle when putting rope by detecting reel 61 by encoder 12, and then can then detect rope length degree.

S400, judge whether the rope stretching length difference of two pretension steel wire ropes is less than the first setting value.

For two setting-up elevators 6 during rope is put, the rope stretching length of two pretension steel wire ropes 7 has difference, step S300 can detect the rope stretching length of each pretension steel wire rope 7, just can according to the rope stretching length of each pretension steel wire rope 7 Calculate the rope stretching length difference of two pretension steel wire ropes 7.

The purpose of this step is:Judge whether rope length difference is less than the first setting value, when judged result is to be, then Into step S500.It should be noted that go out rope form when the first setting value works for those skilled in the art according to crane The limiting value that state determines, the first setting value is positive number.When rope stretching length difference reaches the first setting value, that is, it is more than or equal to First setting value, then illustrate that the rope stretching length difference of two pretension steel wire ropes 7 is excessive, it is believed that pretension steel wire rope 7 is in rope stretching During disorder cable occurs.

In order to which when there is disorder cable phenomenon, operator implements timely, necessary operation, it is preferred that above-mentioned control method is also It can include:When the rope stretching length difference of two pretension steel wire ropes 7 is more than or equal to the first setting value, alarm.

Setting-up elevator corresponding to the larger pretension steel wire rope of S500, control rope stretching length implements serving operation.

When the rope stretching length difference of two pretension steel wire ropes 7 is less than the first setting value, the larger pretension of control rope stretching length Setting-up elevator serving corresponding to steel wire rope 7.Now, control the serving amount of setting-up elevator 6 equal with rope stretching length difference, and then cause The rope stretching equal length of two pretension steel wire ropes 7.At the same time, the longer pretension steel wire rope 7 of rope stretching length is further tensed, So that the current pulling force of two pretension steel wire ropes 7 still meets pretension requirement, i.e., more than pretension value.

This step is realized by controlling setting-up elevator 6 to implement the rope stretching equal length of two pretension steel wire ropes 7 of serving The method of this regulation and control has a variety of, refer to Fig. 4, and Fig. 4 shows a kind of idiographic flow for controlling setting-up elevator to implement serving operation, Including:

S110, the current serving radius for detecting setting-up elevator.

It is known that carried out as the withdrawing rope of setting-up elevator 6 operates, the pretension steel wire rope 7 in current setting-up elevator 6 The number of plies is different, and this step will detect current serving radius, that is, be wound to obtain setting-up elevator 6 when implementing serving operation The radius on basis.

S120, according to rope stretching length difference and the rotational angle of current serving radius calculation setting-up elevator.

Because step S110 can learn current serving radius, then known to the serving length of the circle of reel winding one.We Know, the corresponding rotational angle of the circle of reel winding one is 360 °, therefore can be calculated corresponding to rope stretching length difference and turn Dynamic angle.

S130, control setting-up elevator are run according to rotational angle.

The rotational angle that this step obtains according to step S120, control setting-up elevator rotate.When setting-up elevator 6 turns over It can ensure that the serving amount of setting-up elevator 6 is equal with rope stretching length difference after the rotational angle being calculated.

Certainly, during implementation, step S130 angle of rotation can also be determined by detecting current serving diameter Degree, principle is identical, repeats no more again.

By foregoing description, in control method disclosed in the embodiment of the present invention, in two pretension steel of crane Cord 7 is under Pre strained state, by the rope stretching length adjustment of two pretension steel wire ropes 7 to be equal, in such cases, setting-up support Two pretension steel wire ropes 7 on 1 can tense in the both sides of principal arm 3 isometricly, and then can make it that two pretension steel wire ropes 7 are symmetrical Ground is distributed in the both sides of principal arm 3, and this is a kind of isometric control strategy, enables to three to be in preferable stress, enters And make it that the deformation of two setting-up supports 1 and principal arm 3 is smaller, certainly, it also can preferably resist shadow of the environment to crane stress Ring.With described in background technology etc. compared with power control methods, control method disclosed in the embodiment of the present invention can solve crane and adopt With etc. left and right setting-up support 1 existing for power control methods and the unbalance stress of principal arm 3 and larger potential safety hazard the problem of.

Embodiment two

Based on control method disclosed in the embodiment of the present invention, a kind of pretension steel of super lifting device is also disclosed in the embodiment of the present invention Cord control system.Fig. 5 is refer to, disclosed control system includes:

First detection unit 100, the current pulling force of two pretension steel wire ropes 7 for detecting crane.

As stated in the Background Art, two pretension steel wire ropes 7 on two setting-up supports 1 super lifting device regulate and control complete when, Need to be in Pre strained state.First detection unit 100 is generally arranged on every pretension steel wire rope 7 to detect current pulling force.The One detection means is usually pulling force sensor.

First judging unit 200, for judging whether current pulling force is more than pretension value.

First judging unit 200 is judged on every pretension steel wire rope 7 by the testing result of the first detection unit 100 Whether current pulling force is more than pretension value, only when the current pulling force of pretension steel wire rope 7 is more than pretension value, just can ensure that pretension shape State, follow-up regulation are just significant.If when the current pulling force of pretension steel wire rope 7 is less than or equal to pretension value, should continue The serving of setting-up elevator 6 corresponding to manipulation is to make further pretension.

When judged result is yes, it is, when current pulling force is more than pretension value, just start the second detection unit 300.

Second detection unit 300, for detecting the rope stretching length of two pretension steel wire ropes 7.

So-called rope stretching length refers to that the reel of setting-up elevator 6 puts the length of rope, and corresponding with rope stretching length is remaining Rope length degree, that is, the length of pretension steel wire rope 7 on reel is still wrapped around, rope stretching length is bigger, and remaining rope length degree then can be smaller.

Second detection unit 300 can set encoder 12 in the end face center of reel 61, as shown in Figure 8.Pass through coding Turnning circle when device 12 puts rope by detecting reel 61, and then can then detect rope length degree.

Second judging unit 400, for judging whether the rope stretching length difference of two pretension steel wire ropes 7 is less than the first setting Value.

For two setting-up elevators 6 during rope is put, the rope stretching length of two pretension steel wire ropes 7 has difference, the second inspection The rope stretching length of each pretension steel wire rope 7 can be detected by surveying unit 300, according to the rope stretching length of each pretension steel wire rope 7 The rope stretching length difference of two pretension steel wire ropes 7 can just be calculated.

Whether the effect of the second judging unit 400 length difference that is to judge to restrict is less than the first setting value, works as judged result During to be, then start control unit 500.It should be noted that the first setting value be those skilled in the art according to crane work The limiting value that rope stretching state when making determines, the first setting value is positive number.When rope stretching length difference reaches the first setting value, It is more than or equal to the first setting value, then illustrates that the rope stretching length difference of two pretension steel wire ropes 7 is excessive, it is believed that pretension steel wire Disorder cable occurs during rope stretching for rope 7.

In order to which when there is disorder cable phenomenon, operator implements timely, necessary operation, it is preferred that above-mentioned control system is also Alarm unit 600 can be included, as shown in Figure 6.When the rope stretching length difference of two pretension steel wire ropes 7 is more than or equal to the first setting During value, alarm unit 600 is alarmed.Specifically, alarm unit can be voice guard or visual alarm.

Control unit 500, for controlling the setting-up elevator 6 corresponding to the larger pretension steel wire rope 7 of rope stretching length to implement volume Rop exercise is made.

When the rope stretching length difference of two pretension steel wire ropes 7 is less than the first setting value, the larger pretension of control rope stretching length The serving of setting-up elevator 6 corresponding to steel wire rope 7.Now, control the serving amount of setting-up elevator 6 equal with rope stretching length difference, and then make Obtain the rope stretching equal length of two pretension steel wire ropes 7.At the same time, the longer pretension steel wire rope 7 of rope stretching length is further drawn Tightly so that the current pulling force of two pretension steel wire ropes 7 still meets pretension requirement, i.e., more than pretension value.

Control unit 500 is by controlling setting-up elevator 6 to implement the rope stretching length phase of two pretension steel wire ropes 7 of serving Deng, realizing the device of this regulation and control has a variety of, refer to Fig. 7, and Fig. 7 shows a kind of concrete structure of control unit, including:

Detection sub-unit 510, for detecting the current serving radius of setting-up elevator 6.

It is known that carried out as the withdrawing rope of setting-up elevator 6 operates, the pretension steel wire rope 7 in current setting-up elevator 6 The number of plies is different, and detection sub-unit will detect current serving radius, that is, in order to obtain setting-up elevator 6 when implementing serving operation Wind the radius on basis.

Computation subunit 520, for the angle of rotation according to rope stretching length difference and current serving radius calculation setting-up elevator 6 Degree.

Because detection sub-unit 510 can learn current serving radius, then known to the serving length of the circle of reel winding one. It is known that the rotational angle corresponding to the circle of reel winding one is 360 °, therefore can be calculated corresponding to rope stretching length difference Rotational angle.

Subelement 530 is controlled, for controlling setting-up elevator 6 to be run according to rotational angle.

The rotational angle that control subelement 530 obtains according to computation subunit 520, control setting-up elevator 6 rotate.When Setting-up elevator 6 turns over rotational angle be calculated can ensure the serving amount and rope stretching length difference phase of setting-up elevator 6 afterwards Deng.

Certainly, during implementation, rotational angle, principle phase can also be determined by detecting current serving diameter Together, repeat no more again.

The control system that the present embodiment two provides is corresponding with the control method that embodiment one provides, specific beneficial to effect Fruit, the description of appropriate section in embodiment one is refer to, is repeated no more again.

Embodiment three

Based on the control system disclosed in the embodiment of the present invention two, the embodiment of the present invention three discloses a kind of super lifting device, institute Disclosed super lifting device includes the control system described in embodiment two.

Super lifting device disclosed in the embodiment of the present invention three includes that the two of the both sides of principal arm 3 of crane can be symmetrically arranged at Bar pretension steel wire rope 7 and two setting-up elevators 6 for winding pretension steel wire rope 7 respectively.Setting-up elevator 6 includes lockable mechanism. As shown in figure 8, the device of rotation driving of setting-up elevator 6 can be hydraulic motor 11, hydraulic motor 11 is connected with driving oil sources 10, By driving oil sources 10 to realize fuel feeding.Certainly, the device of rotation driving of setting-up elevator 6 can also be motor.

Fig. 8 is refer to, disclosed lockable mechanism can include ratchet 62, lock pin oil cylinder 64 and swing locking member.Ratchet 62 are arranged on the end of reel 61 of setting-up elevator 6, swing locking member one end and the mounting bracket of setting-up elevator 6 is hinged, other end energy Enough and ratchet 62 puts the rope spacing cooperation of rotation direction reel 61.

The cylinder body 642 and the mounting bracket of setting-up elevator 6 of lock pin oil cylinder 64 are hinged, piston rod 641 and the pendulum of lock pin oil cylinder 64 Dynamic locking member is hinged, and locking member swing is swung so that it switches between operating position and avoidance position for driving.Specific The course of work in, when swing locking member be in operating position when can with ratchet 62 put restrict the spacing cooperation of rotation direction, reach To the purpose of the locked unwrapping wire of setting-up elevator 6.When swinging locking member in avoidance position, then reach and do not interfere setting-up elevator 6 dynamic The purpose of work.

Specific operation process is as follows:When needing to control 6 serving of setting-up elevator, the piston rod 641 of lock pin oil cylinder 64 stretches out, Jacked up so that swinging locking member, and then in the avoidance position separated with setting-up elevator 6, the driving electricity of final setting-up elevator 6 Machine or hydraulic motor 11, which are opened, implements serving operation.When needing to control 6 serving of setting-up elevator, the piston rod of lock pin oil cylinder 64 641 retractions so that swing locking member and dragged down, and then be in the operating position spacing with setting-up elevator 6, final locked setting-up volume 6 are raised, avoids 6 automatic unwrapping wire of setting-up elevator.

Referring again to Fig. 8, in a kind of preferable scheme:It can be tensioning hydro-cylinder 63 to swing locking member.Tensioning hydro-cylinder 63 Cylinder body 632 and the mounting bracket of setting-up elevator 6 be hinged, the piston rod 631 of tensioning hydro-cylinder 63 can be extend out to ratchet 62 in reel 61 position for putting the rope spacing cooperation of rotation direction.During work, the flexible change tensioning hydro-cylinder 63 of lock pin oil cylinder 64 Angle, and then can cause tensioning hydro-cylinder 63 be in favourable restraining position.The piston rod 631 of tensioning hydro-cylinder 63 stretches out and then reality The rope spacing cooperation of rotation direction now is being put with ratchet 62, the energy of retraction of piston rod 631 of tensioning hydro-cylinder 63 is realized and point of ratchet 62 From.At the same time, further stretching, extension can promote reel 61 to rotate to the piston rod 631 of tensioning hydro-cylinder 63 in certain scope, enter And setting-up elevator 6 can be adjusted microly and implements serving.

The both ends of cylinder body 632 of tensioning hydro-cylinder 63 can set pole level sensor 633 and pole level sensor 634, and pass through phase The control device answered is excessively flexible to limit piston rod 631.Similarly, the both ends of the cylinder body 642 of lock pin oil cylinder 64 can set pole Level sensor 643 and pole level sensor 644, and the excessively flexible of piston rod 641 is limited by corresponding control device.

Based on this, super lifting device disclosed in the embodiment of the present invention three can also include the 3rd judging unit.3rd judges list Member is used to judge whether rope length difference is more than the second setting value, and the second setting value is less than the first setting value.Certainly, the second setting The empirical value that value and those skilled in the art set according to the species of specific working environment or crane, the application are unlimited Make its concrete numerical value.

Wherein, control unit 500 is connected with the 3rd judging unit;Rope stretching length difference be more than the second setting value (when So, less than the first setting value) when, then illustrate that serving amount is larger, in such cases, control unit 500 is used to control tensioning hydro-cylinder 63 piston rod 631 bounce back and start setting-up elevator 6 driving is electronic or hydraulic motor 11 is made with implementing to put rop exercise.When going out rope length When degree difference is less than or equal to the second setting value, then it is considered that serving amount is smaller, in order to reduce to larger motor, hydraulic pressure The startup of motor 11, control unit 500 are used to control the piston rod 631 of tensioning hydro-cylinder 63 to stretch out to promote reel 61 to rotate receipts Rope.Above two mode enables super lifting device more suitably to adjust driving side according to the selection of the size of rope stretching length difference Formula, efficiency can be not only improved, but also degree of regulation can be improved.

Based on super lifting device disclosed in the embodiment of the present invention, a kind of crane is also disclosed in the embodiment of the present invention.Disclosed Crane includes the super lifting device as described in any one in foregoing embodiments.

Herein, only emphasis describes difference with other schemes to each preferred scheme, as long as each preferred scheme Do not conflict, can be combined, the embodiment formed after combination is also within category disclosed in this specification, it is contemplated that Text is succinct, herein with regard to no longer individually being described to combining formed embodiment.

Described above is only the embodiment of the present invention, is made skilled artisans appreciate that or realizing this hair It is bright.A variety of modifications to these embodiments will be apparent to one skilled in the art, as defined herein General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one The most wide scope caused.

Claims (10)

1. the pretension steel wire rope control method of super lifting device, it is characterised in that including:
11) the current pulling force of two pretension steel wire ropes (7) of crane is detected;
12) when the current pulling force is more than pretension value, the rope stretching length of two pretension steel wire ropes (7) is detected;
13) according to the rope stretching length, judge whether the rope stretching length difference of two pretension steel wire ropes (7) is less than the first setting Value, first setting value are positive number, and judged result is when being, into step 14);
14) setting-up elevator (6) corresponding to the larger pretension steel wire rope (7) of the rope stretching length is controlled to implement serving behaviour Make, and serving amount is equal with the rope stretching length difference.
2. according to the method for claim 1, it is characterised in that also include:
When the rope stretching length difference is more than or equal to the first setting value, alarm.
3. method according to claim 1 or 2, it is characterised in that step 14) includes:
31) the current serving radius of the setting-up elevator (6) is detected;
32) according to the rope stretching length difference and the current serving radius calculation setting-up elevator (6) rotational angle;
33) setting-up elevator (6) is controlled to be run according to the rotational angle.
4. the pretension steel wire rope control system of super lifting device, it is characterised in that including:
First detection unit (100), the current pulling force of two pretension steel wire ropes (7) for detecting crane;
First judging unit (200), for judging whether the current pulling force is more than pretension value;
Second detection unit (300), for when the current pulling force is more than the pretension value, detecting two pretension steel wires The rope stretching length of rope (7);
Second judging unit (400), for judging whether the rope stretching length difference of two pretension steel wire ropes (7) sets less than first Definite value, first setting value are positive number;
Control unit (500), for when the rope stretching length difference is less than first setting value, control the rope stretching length compared with Setting-up elevator (6) corresponding to the big pretension steel wire rope (7) implements serving operation, and serving amount and the rope stretching length difference It is equal.
5. control system according to claim 4, it is characterised in that also including alarm unit;Wherein:
The alarm unit (600) is used to be more than or equal to the first setting value alarm in the rope stretching length difference.
6. the control system according to claim 4 or 5, it is characterised in that described control unit (500) includes:
Detection sub-unit (510), for detecting the current serving radius of the setting-up elevator (6);
Computation subunit (520), for the setting-up elevator according to the rope stretching length difference and the current serving radius calculation (6) rotational angle;
Subelement (530) is controlled, for controlling the setting-up elevator (6) to be run according to the rotational angle.
7. super lifting device, including two pretension steel wire ropes (7) of principal arm (3) both sides of crane can be symmetrically arranged at and used In two setting-up elevators (6) for winding the pretension steel wire rope (7) respectively;Characterized in that, also include:
Pretension steel wire rope control system as described in any in claim 4-6.
8. super lifting device according to claim 7, it is characterised in that the setting-up elevator (6) includes lockable mechanism;It is described Lockable mechanism includes ratchet (62), tensioning hydro-cylinder (63) and lock pin oil cylinder (64);Wherein:
The ratchet (62) is arranged on reel (61) end of the setting-up elevator (6);
The cylinder body (632) and the mounting bracket of the setting-up elevator (6) of the tensioning hydro-cylinder (63) are hinged, the tensioning hydro-cylinder (63) Piston rod (631) can in the rope of putting of the reel (61), rotation direction be spacing matches somebody with somebody with the ratchet (62) under stretching state Close;
The cylinder body (642) of the lock pin oil cylinder (64) is hinged with the mounting bracket, the piston rod (641) of the lock pin oil cylinder (64) Be hinged with the cylinder body of the tensioning hydro-cylinder (63), for drive the tensioning hydro-cylinder (63) swing so that its in operating position with keeping away Allow between position and switch.
9. super lifting device according to claim 8, it is characterised in that also including the 3rd judging unit;Described 3rd judges Unit is used to judge whether the rope stretching length difference is more than the second setting value, and second setting value is less than the described first setting Value;
Described control unit (500) is connected with the 3rd judging unit;Wherein:
Described control unit (500) is used for when the rope stretching length difference is more than second setting value, controls the tensioning oil The piston rod (631) of cylinder (63) bounces back and starts the motor of the setting-up elevator (6) or hydraulic motor (11) works with reality Rop exercise is discharged to make;
Described control unit (500) is used for when the rope stretching length difference is less than or equal to second setting value, described in control The piston rod (631) of tensioning hydro-cylinder (63) is stretched out to promote the reel (61) to rotate rope closing.
10. crane, it is characterised in that including:
Super lifting device in claim 7-9 described in any one.
CN201610795150.5A 2016-08-31 2016-08-31 Crane, super lifting device and its pretension steel wire rope control method and system CN106115516B (en)

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