CN106744363A - A kind of explosion-proof type swing lever - Google Patents
A kind of explosion-proof type swing lever Download PDFInfo
- Publication number
- CN106744363A CN106744363A CN201710053287.8A CN201710053287A CN106744363A CN 106744363 A CN106744363 A CN 106744363A CN 201710053287 A CN201710053287 A CN 201710053287A CN 106744363 A CN106744363 A CN 106744363A
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- CN
- China
- Prior art keywords
- walking
- arm support
- explosion
- raising
- column
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/16—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs supported by columns, e.g. towers having their lower end mounted for slewing movements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/40—Applications of devices for transmitting control pulses; Applications of remote control devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/50—Applications of limit circuits or of limit-switch arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/84—Slewing gear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
- B66C9/08—Runners; Runner bearings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/54—Safety gear
- B66D1/58—Safety gear responsive to excess of load
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/32—Detent devices
Abstract
The present invention relates to a kind of explosion-proof type swing lever, it is characterised in that the crane includes column, slew gear, column cat ladder, pivoting support maintenance platform, arm support, arm support maintenance platform, rotary locking device, raising walking mechanism and control device；Raising walking mechanism includes lifting motor, raising reduction box, winch, movable motor, walking reduction box, walking dolly and rope length encoder；Lifting motor is fixedly connected winch by raising reduction box, the coaxially connected two winding drum of winch, the winding of a wherein reel sets normal temperature steel wire rope, another reel winding sets low temperature steel wire rope, the bottom of steel wire rope is fixedly installed hook assembly, and lifting motor drives spool turns, movable motor to drive walking dolly to run forward or backward by reduction box of walking by raising reduction box, walking dolly is supported fixation by bearing of walking, and rope length encoder is installed on the shaft end of reel.
Description
Technical field
The present invention relates to a kind of crane, especially with regard to a kind of explosion-proof type swing lever
Background technology
In recent years, the LNG energy with its calorific value it is high, be subject to each international politics using clean environment firendly, easily storage and good economy
Mansion and the attention of all multi-users, with the fast lifting of LNG trades status, countries in the world are all planned in the coming years including China
Interior construction LNG receiving stations.Cut-off 2016, ShenZhen,GuangDong, Shanghai Yangshan port, Putian, fujian Province, Ningbo of Zhejiang, Nantong etc. 12
Seat LNG receiving stations have gone into operation, and the LNG such as Tianjin huge port, Beihai Fisheries Base Guangxi Province receiving stations build, and separately have ten Yu Ge LNG receiving stations
The newly-built and expansion project of project is in the middle of planning, and particularly China is big with the natural gas that Russia endorsed 400,000,000,000 dollars
It is single, further expand market prospects, therefore, LNG storage tank tank deck crane has the huge market demand and good development
Prospect.Although China liquefied natural gas industry starting is than later, each link in the full industrial chains of LNG is all nearly ten years
It has been developed that, especially the aspect of LNG Grand Equipments autonomy-oriented development in recent years is obtained involved by greater advance, particularly this technology
Explosion-proof type swing lever.
Each LNG storage tank tank deck of LNG receiving stations is required for supporting explosion-proof type crane to meet LNG pump installation, inspection dimension
The lifting job requirement repaiied.Because LNG pump cost is high, needs to meet dead slow speed when mounted and be accurately positioned installation requirement, slightly
Misoperation will collide damage low-pressure pump body with pump sump, and LNG inflammable and explosive dielectric property determines tank deck crane
The safety such as explosive-proof grade is high, operating position fixing is accurate, motor low speed ratio high is big, harsh applying working condition, and because of lifting captain
Phase is in the middle of marine environment, therefore the crane should possess high reliability, maintainability and environmental suitability.
Existing LNG tank jack-up heavy-duty machine has two kinds：One kind is electric hydraulic explosion-proof crane, and this kind of crane is motor
Drive hydraulic pump realize crane amplitude variation, raising, revolution action, this kind of crane when low-lift pump maintenance crane is used as by
In hydraulic system is used, hydraulic oil has the risk of leakage, and the hydraulic oil of leakage is easy to make the LNG storage tank tank deck for cleaning
Into pollution, secondly, HYDRAULIC CONTROL SYSTEM is not accurate, there is buffering, and the height with the requirement of low-lift pump maintenance activity precisely differs greatly；Separately
A kind of is common Electric Explosion-proof slewing crane, and domestic this kind of crane is generally used for interior, explosive-proof grade typically than relatively low,
LNG storage tank high-risk region is not used to, and speed is generally single speed control, even dual-speed control, low speed ratio high is generally
2:1 or 3:1, the dead slow speed that low-lift pump maintenance activity requirement is not reached much is precisely controlled, therefore existing crane technology is to dimension
Repair LNG storage tank low-lift pump difficulty big, dangerous high.
The content of the invention
Regarding to the issue above, it is applicable with high reliability, maintainability and environment it is an object of the invention to provide a kind of
The explosion-proof type swing lever of property.
To achieve the above object, the present invention takes following technical scheme：A kind of explosion-proof type swing lever, its feature exists
In the crane includes column, slew gear, column cat ladder, pivoting support maintenance platform, arm support, arm support maintenance platform, revolution
Locking device, raising walking mechanism and control device；The column forms cylinder using steel plate is coiling welded, the column bottom with
The pre-embedded bolt for pouring into a mould pedestal is fixedly connected, and the column top is fixedly connected with the revolving structure；Longitudinal direction in the column
The column cat ladder is fixedly installed, the column cat ladder top is fixedly connected the pivoting support maintenance platform；The turn-around machine
Structure is fixedly mounted on the arm support top, and drives the whole arm support revolution, and the arm support is welded by tower body and walking beam
Steel construction piece, tower body lower section is fixedly connected with the slew gear, and the walking beam is used to be walked for described
Walking before and after mechanism is risen, the arm support maintenance safety is mounted in the both sides of the arm support walking beam；The rotary locking device is used for
Rotary locking is carried out to the arm support；The raising walking mechanism include lifting motor, raising reduction box, winch, movable motor,
Walking reduction box, walking dolly, rope length encoder and the upper and lower stopping means of raising；The lifting motor is solid by raising reduction box
Connection winch, the coaxially connected two winding drum of winch are determined, wherein reel winding sets normal temperature steel wire rope, another volume described in one
Cylinder winding sets low temperature steel wire rope, and the bottom of the steel wire rope is fixedly installed hook assembly, and the lifting motor passes through institute
State raising reduction box and drive the spool turns, the movable motor by the walking reduction box drive the walking dolly to
Preceding or run backward, the walking dolly is supported fixation by bearing of walking, and the rope length encoder is installed on the volume
The shaft end of cylinder, when the reel rotates, the signal of the rope length encoder output is sent to the control device, the raising
Upper and lower stopping means is respectively adopted the mode of the upper steel wire rope of nylon roller writing that surpasses all the others cylinder.
Preferably, the slew gear includes turning motor, pivoting support, rotary planetary decelerator and adjustment flange, institute
State turning motor and be fixedly mounted on the arm support top, the pivoting support top is bolted with the arm support, described
Pivoting support bottom is fixedly connected with column top, and the turning motor is fixedly connected the rotary planetary decelerator, institute
Stating turning motor drives the rotary planetary decelerator to rotate, and drives the pivoting support to rotate by output pinion, from
And drive the arm support to turn round, in addition, the adjustment flange is fixedly installed on the arm support, for adjusting the slew gear
Effective between the output pinion of bottom and the gear of the pivoting support engages.
Preferably, the rotary locking device includes connection otic placode, latch, travel switch and control circuit, the connection
Otic placode includes upper connection otic placode and lower connection otic placode, and the upper connection otic placode is fixedly installed on the arm support, the lower engaging lug
Plate is fixedly installed on column, and when crane does not work, the latch is inserted in the upper lower ear plate, and travel switch is driven on top,
Cutting-off controlling circuit, the slew gear can not work.
Preferably, the outside of the column cat ladder is additionally provided with shield cage.
Preferably, the vertically lower winding degree of the arm support is no more than R/250mm, and R is effective radius, i.e. the ground jack centre of gyration
The load of line and outside termination hangs the horizontal range between vertical center line.
Preferably, the roller of the walking dolly is directly processed into using material 0Cr17Ni4Cu4Nb high-strength stainless steels
Type.
Preferably, the crane also includes four pin type sensors, and four pin type sensors are fixed set respectively
On the fulcrum that the wall stand put at the winch two ends is connected with the walking bearing, when the winch carries pulling force, Mei Yisuo
Stating the foil gauge in pin type sensor and deforming upon causes current signal to change, and the current signal of change is sent to
The control device.
Preferably, the arm support is foremost respectively provided with terminal collision block with rearmost end terminal stopping, and then before descriscent
Or it is additionally provided with the dead slow speed collision block at the position of half meter or so of the terminal collision block backward.
Preferably, the crane also includes integrated remote-control handle, the integrated remote-control handle point 3 groups of functional form buttons, urgency
Stop button and standby key, 3 groups of functional form buttons control crane rise and fall, left and right revolution and front and rear walking respectively
Low speed conversion high, 3 groups of functional form buttons use 2 groups of band switches.
Preferably, the winch uses double brake, and one is motor from strap brake, and another brake is ratchet and pawl arrangement
Parking braking, the brake that the motor is carried the lifting motor coaxial afterbody, work schedule and the lifting motor
Action sequence it is consistent；The ratchet of the parking braking of ratchet and pawl arrangement is on the niggerhead by side wall stand
On one side, in wall stand, the detent mechanism is by the anti-explosion electric hydrodynamic on the outside of wall stand for the rotary shaft of the detent mechanism
Cylinder pressure is driven, the electrohydraulic cylinder energization work, drives detent mechanism work, and ratchet is disengaged from ratchet, conversely, electric
Hydrodynamic cylinder pressure no power, detent mechanism resets into original position, and ratchet withstands ratchet, prevents the hook assembly on the winch under
Drop.
Due to taking above technical scheme, it has advantages below to the present invention：1st, column of the present invention uses high-strength steel sheet
(DH36) it is welded and forms cylinder, therefore the LNG pump normally lifted by crane on LNG tank top in pump sump can be met, with high intensity, height
The features such as stability, low amount of deflection, high intensity is to support the guarantee of whole crane normal work, and high stability is each dynamic crane
Make the essential condition of safe operation, low amount of deflection is to ensure that the guarantee of raising walking mechanism safe operation on designed path.2nd, originally
Tower body and arm are designed as an entirety, i.e. tower body and arm by the arm support of invention need not connection bearing pin or support bar, make
With safer.3rd, crane travelling gear of the invention is walked on arm support track, it is desirable to which the inclination of orbital plane is no more than one
Fixed value range be the vertically lower winding degree of arm support no more than R/250mm, so that ensure will not when walking dolly is walked in orbital plane
It is out of control.4th, winch of the invention is designed using coaxial twin-roll, can simultaneously be respectively provided with low temperature steel wire rope and normal temperature steel wire rope, because
This can be when low-lift pump be lifted by crane, it is not necessary to need to be pulled down original normal temperature steel wire rope on winch drum, directly be carried LNG pump
Low temperature steel wire rope be installed on winch, carry out lift by crane LNG pump operation.5th, winch double-brake structure design of the invention,
When design winch brake is braked, a motor from strap brake is selected, another brake is the brake system carried independently of motor
Dynamic, under normal operation, all brakes are opened, when under powering-off state, all brakes closure (stops dead)；When
During operation, motor brake failure, is the safety of protection equipment, another just to play guarantor from the brake of strap brake independently of motor
Shield is acted on.6th, no-spark walking roller design of the present invention, the i.e. roller surface in walking mechanism do copper plating treatment, therefore effectively anti-
Only roller when walking, because of friction, clashing into and producing spark to trigger the Mixed Gases Explosion of LNG and air.7th, lifting of the present invention
The dead slow speed control technology of machine is related to two aspects：One is the low cruise in big ratio dual-speed control technology, another dead slow speed control
Technology is exactly the dead slow speed travelling control of raising travelling mechanism, and the dead slow speed control protection of raising travelling mechanism is located at whole running stroke
About half meter from final spacing place of rear and front end position, when raising walking mechanism is walked to dead slow speed spacing place forward or backward
When, dead slow speed switch sends signal, the instruction of walking will be controlled to be switched to dead slow speed by high-speed cruising and run, and raising walking mechanism is with slow
Speed is run forward or backward, until the final spacing place of fore/aft travel, stroke halt instruction is touched by maximal end point limit switch, rises
Rise walking mechanism stopping walking forward or backward.In sum, the present invention may be mounted at oil and gas industry petroleum tank,
The fuel reserve containers such as LNG tank, liquefied petroleum gas storage tank top, is widely used in placement, the peace of material and facility
The lifting operations such as dress, maintenance, maintenance.
Brief description of the drawings
Fig. 1 is the structural representation of explosion-proof type swing lever of the present invention；
Fig. 2 is explosion-proof type swing lever slew gear structural representation of the present invention；
Fig. 3 is explosion-proof type swing lever raising walking mechanism structural representation of the present invention.
Specific embodiment
The present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated, however, that accompanying drawing has been provided only more
Understand the present invention well, they should not be interpreted as limitation of the present invention.
As shown in figure 1, explosion-proof type swing lever of the invention, including column 1, slew gear 2, column cat ladder 3, return
Turn supporting maintenance platform 4, arm support 5, rotary locking device 6, raising walking mechanism 7, arm support maintenance platform and 8 control devices.
Column 1 is set using the coiling welded hollow cylinder of high-strength steel sheet (DH36), bottom and the top fixation of column 1
Adpting flange is equipped with, the adpting flange of the bottom of column 1 is fixedly connected with the pre-embedded bolt of cast pedestal, the connection at the top of column 1
Flange is fixedly connected by high-strength bolt with revolving structure 2.Longitudinally fixed setting column cat ladder 3, column cat ladder 3 in column 1
Including parallel longitudinal spaced two steel plate 31, being horizontally arranged at interval between two steel plates 31 has some square steel 32, when using, stands
The outside of post cat ladder 3 is provided with shield cage, and for being protected to climbing personnel, the top of column cat ladder 3 is fixedly connected revolution branch
Maintenance platform 4 is held, pivoting support maintenance platform 4 is fixedly installed column top, for repairing slew gear 2 and electrical control system
System.Column cat ladder 3 is used for operating personnel and is climbed to pivoting support maintenance platform 4 pairs above crane by tank deck operation maintenance platform
Crane is repaired.
As shown in Fig. 2 slew gear 2 is fixedly mounted on the top of arm support 5, and whole arm support 5 is driven to turn round.Slew gear
2 include turning motor 21, pivoting support 22, rotary planetary decelerator 23 and adjustment flange 24.Turning motor 21 is fixedly mounted on
The top of arm support 5, with arm support 5 by high strength exploitation, the bottom of pivoting support 22 is pushed up with column 1 on the top of pivoting support 22
The adpting flange in portion is fixedly connected rotary planetary decelerator 23, turning motor 21 by high strength exploitation, turning motor 21
Drive rotary planetary decelerator 23 to rotate, and drive pivoting support 22 to rotate by output pinion, so as to drive whole arm support 5
Revolution, in addition, adjustment flange 24 is fixedly installed on arm support 5, output pinion and revolution for adjusting the bottom of slew gear 2
Effective engagement between the gear of supporting 22.
Rotary locking device 6 includes connection otic placode, latch, travel switch and control circuit, and connection otic placode includes upper connection
Otic placode and lower connection otic placode, upper connection otic placode are fixedly installed on arm support 5, and lower connection otic placode is fixedly installed on column 1.Work as lifting
When machine does not work, latch is inserted in lower ear plate, and travel switch is driven on top, and cutting-off controlling circuit, crane can not work, for right
Involuntary maneuver caused by the environment (such as typhoon, earthquake etc.) that can not be expected of crane shields, and control circuit can be with
Using available circuit, it is not limited herein.
As shown in figure 3, raising walking mechanism 7 include lifting motor 71, raising reduction box 72, winch 73, movable motor 74,
Walking reduction box 75, walking dolly 76, rope length encoder 77 and the upper and lower stopping means 78 of raising；Lifting motor 71 is subtracted by raising
Fast case 72 is fixedly connected winch 73,73 coaxially connected two reels 730 of winch, wherein reel winding sets normal temperature steel wire rope
731 are used for lifting cargo, and another reel winding sets low temperature steel wire rope to be used to lift by crane LNG pump, and lifting motor 71 is subtracted by raising
The deceleration rear-guard movable reel of fast case 72 is rotated, and so as to realize steel wire rope folding and unfolding, finally realizes rising or falling for weight；Movable motor
74 drive walking dolly 76 to run forward or backward by reduction box 75 of walking, so as to realize that raising walking mechanism is walked in arm support 5
Walking function on road, walking dolly 76 can be supported fixation by a walking bearing.Rope length encoder 77 is installed on volume
The shaft end of cylinder, the length for calculating the decentralization of the steel wire rope on reel, when reel rotates, the signal of the output of rope length encoder 77
It is sent to control device and length is shown after treatment.The upper and lower stopping means 78 of raising is using the upper steel wire rope of nylon roller writing that surpasses all the others cylinder
Mode, when normal temperature steel wire rope drops to ground outside tank deck, nylon roller drops on naked body reel from normal temperature steel wire rope, this
When touch lower position switch action；When normal temperature steel wire rope hook rises to 1 meter from reel or so, nylon roller is from naked body reel
On mention on normal temperature steel wire rope, now touch upper limit position switch action, the upper and lower spacing setting of low temperature steel wire rope is similar, herein not
Repeat again.
Arm support 5 is the steel construction piece being welded by tower body and walking beam 51, and tower body lower section is by high-strength bolt and returns
Turn supporting 22 to be fixedly connected, walking beam is used for for walking before and after walking lifting mechanism 7.
Arm support maintenance platform 8 is arranged on the both sides of arm support walking beam, for operating personnel's maintenance walking lifting mechanism and more
Change steel rope (normal temperature rope and low temperature rope), the bottom of steel wire rope is fixedly installed hook assembly 9, and arm support maintenance platform 8 with return
Turn supporting maintenance platform 4 between it is longitudinally fixed be connected with walking ladder 81.
In a preferred embodiment, the height about 12m of column 1, as example, not limited to this.
In a preferred embodiment, in order to meet the spy that raising walking mechanism 7 is walked on the walking beam of arm support 5
Property, it is desirable to the inclination of orbital plane no more than certain scope, to ensure to be lost when walking dolly 76 is walked on walking beam
Control, the application require after overall calculation and finite element analysis that (R is effective no more than R/250mm for the vertically lower winding degree of arm support 5
Radius, the i.e. load of ground jack centre of gyration line and outside termination hangs the horizontal range between vertical center line).
In a preferred embodiment, in order to prevent walking dolly 76 roller when walking, because friction, clash into and produce
Flower of lighting a fire triggers the Mixed Gases Explosion of LNG and air, therefore roller of the invention uses material 0Cr17Ni4Cu4Nb high intensity
The direct machine-shaping of stainless steel.
In a preferred embodiment, explosion-proof type swing lever of the invention also includes a rain shade 10, rain cover
Canopy 10 is arranged on side of the walking beam by tower body, and when crane does not work, walking dolly 76 is parked under rain shade 10, plays protection
Effect.
In a preferred embodiment, explosion-proof type swing lever of the invention also includes four pin type sensings
Device, four pin type sensors are respectively fixedly disposed on the fulcrum that the wall stand 733 at the two ends of winch 73 is connected with walking bearing, when
When winch 73 carries pulling force, the foil gauge in pin type sensor is deformed upon, and the current signal in pin type sensor occurs
Change, current signal is sent to control device and calculate the load value of current hoister winch, the numerical value be used in real time with
The design early-warning point of the crane set in control device, controlling alarm point are compared, and according to comparative result output control
Signal controls the lifting of lifting motor 71, so as to realize the overload protection of crane, while the specified lift heavy of crane is realized, it is real
The monitor in real time such as border lift heavy, actual loading percentage.
In a preferred embodiment, raising walking mechanism of the invention is additionally provided with electric limiting switch, wherein, arm
Frame 5 is respectively provided with terminal collision block with rearmost end terminal stopping foremost, and then from half meter of terminal collision block forward or backward
Dead slow speed collision block is additionally provided with the position of left and right, is whole stroke between front and rear terminal collision block, the stroke between front and rear dead slow speed collision block
The inside of whole stroke, one meter fewer than whole stroke.During work, the terminal forward or backward of raising walking mechanism 7 stops,
Hit to terminal forwardly and rearwardly by the electric limiting switch collision forward or backward installed on raising walking mechanism body
Block, triggering electric limiting switch sends instruction stopping walking forward or backward.And then from terminal collision block forward or backward
Dead slow speed collision block is additionally provided with half meter or so of position, is arrived by the electric limiting switch collision installed on raising walking mechanism body
Dead slow speed collision block forward or backward, triggering dead slow speed electric limiting switch sends instruction, and dead slow speed is walked forward or backward, until terminal
At collision block stopping.During raising walking mechanism is walked, if in high-speed cruising shelves, when walking forward or backward to dead slow speed
When at collision block, dead slow speed switch sends instruction, and walking automatically switches to dead slow speed shelves operation, and slow operation to terminal collision block until stop
Only, the security reliability of raising walking mechanism is improved.
In a preferred embodiment, the working environment of crane determines the operator scheme of crane, lifts by crane low pressure
During LNG pump, operating personnel need station beside pump sump, and look at staff and material object carries out lifting operation, it is impossible to stand and inciting somebody to action
Blindly operated on nearly 50 meters loop wheel machine platforms high.Explosion-proof type swing lever of the present invention also includes integrated remote-control handle, will
Operator scheme is designed to hand-held integrated straighforward operation.Integrated remote-control handle is used for the everything to crane by control device
It is controlled, integrated remote-control handle point 3 groups of functional form buttons, scram button and standby keys, 3 groups of functional form buttons are controlled respectively
Crane can rise and fall, left and right revolution and front and rear walking low speed high conversion, scram button in case of emergency uses.3 groups
Functional form button can be using 2 groups of band switches, strength when energy inductive operation person operates, the gentle switching for realizing low speed high,
Crane low speed conversion efficiency high is improved, is conducive to being accurately positioned for crane.In the case of normal operating crane, flicking
Press certain direction action of one of functional form button, crane respective action slow running；When needing to switch to high speed, only
This button need to be firmly pressed again, and the band switch closed action on integrated remote-control handle button, crane correspondence is switched at a high speed
Running status.Conversely, when crane high-speed cruising, putting down the button on integrated remote-control handle gently, band switch disconnection action rises
Heavy-duty machine switches to low-speed run state, and such integrated control is not only light but also can reduce the button quantity of remote control button box, contracting
The parking space of small remote control button box.
In a preferred embodiment, due to the particularity of LNG storage tank, its whole machine needs complete explosion-proof, explosive-proof grade requirement
It is high.In the case where circuit voltage, electric induction are certain, minimum ignition energy is the function of minimum ignition current.Therefore, international electricity
The work committee (IEC) and China are all that explosive gas, vapour mixture are classified with minimum ignition current ratio, rank
It is divided into IIA, IIB and IIC from low to high.Ignition temperature to explosive gas, steam mixture can be as temperature grade
Packet by packet basis, " temperature packet " IEC and China are grouped explosive gas, steam mixture, and rank is divided into T1-T6 from high to low
Six groups.And research project explosive-proof grade is II2GExdeIIC T3, just understand that it requires that degree is very high.It is of the invention all
Electric control box, hand-held integrated straighforward operation button box etc. will be designed and manufactured as this explosive-proof grade.
In a preferred embodiment, winch of the present invention 73 can use double brake, and one is motor from strap brake, separately
One brake is the parking braking of ratchet and pawl arrangement 734.The brake that motor is carried motor coaxial afterbody, work schedule with
The action sequence of motor is consistent, i.e., when electrical power works, brake opens lax, and when motor power-off does not work, brake closure is stopped
Tightly.By one side of side wall stand on niggerhead, in wall stand, detent mechanism passes through the rotary shaft of detent mechanism ratchet
Anti-explosion electric hydraulic cylinder on the outside of wall stand drives, the knob control electrohydraulic cylinder of hand-held integrated straighforward operation button box
Action, knob closure, electrohydraulic cylinder energization work, drive detent mechanism work, ratchet is disengaged from ratchet (now, strand
Car is controlled by motor from strap brake), conversely, knob is opened, electrohydraulic cylinder no power, detent mechanism resets into original position, spine
Pawl withstands ratchet, prevents the suspension hook on winch from declining, and the parking that the brake of click is only used as winch is used.
In a preferred embodiment, control device includes lift control module, travelling control module, revolution control
Module, torque limitation control module, hand-held centralized operation control module and supplemental functionality, lift control module are used to control
Lifting motor 71, travelling control module is used to control movable motor 74, and torque limitation control module is used to obtain pin type sensing
Device data realize the overload protection of crane, and supplemental functionality is provided with aviation warning, lightning protection etc..It is extremely low in order to meet
The requirement of low speed and frequent crawl, from design, the selection of Motor of the three big-movements motor of double speed and frequent crawl, and also it is low
Speed is extremely low, and the low speed of raising action has reached 0.9m/min；Frequent crawl reaches 4 times/min.
In a preferred embodiment, the speed ratio of raising action double speed is close to 6:1 (high speed 5.2m/min, dead slow speed is
0.9m/min), the difficulty of motor selection and control system is increased.According to formula n (rotating speed)=60 × f (frequency)/p/2 (poles
It is several) with reference to the actually used operating mode of this crane, everything is double speed design, particularly lifts height/dead slow speed degree close to 6:
1, top gear differs larger with dead slow speed shelves, and dead slow speed lifting will reach 0.9m/min, and the power of dead slow speed shelves is also especially small；Walking is fast/
Dead slow speed degree is 4:1, the power of dead slow speed walking is close to 0.1kW.
The various embodiments described above are merely to illustrate the present invention, wherein the structure of each part, connected mode and manufacture craft etc. are all
Can be what is be varied from, every equivalents carried out on the basis of technical solution of the present invention and improvement should not be excluded
Outside protection scope of the present invention.
Claims (10)
1. a kind of explosion-proof type swing lever, it is characterised in that the crane includes column, slew gear, column cat ladder, returns
Turn supporting maintenance platform, arm support, arm support maintenance platform, rotary locking device, raising walking mechanism and control device；The column
Cylinder is formed using steel plate is coiling welded, the column bottom is fixedly connected with the pre-embedded bolt of cast pedestal, the column top
It is fixedly connected with the revolving structure；Longitudinally fixed in the column to set the column cat ladder, the column cat ladder top is solid
Surely the pivoting support maintenance platform is connected；The slew gear is fixedly mounted on the arm support top, and drives whole described
Arm support is turned round, and the arm support is the steel construction piece being welded by tower body and walking beam, tower body lower section and the turn-around machine
Structure is fixedly connected, and the walking beam is used for for walking before and after the walking lifting mechanism, and the arm support maintenance safety is mounted in described
The both sides of arm support walking beam；The rotary locking device is used to carry out rotary locking to the arm support；The raising walking mechanism
Including lifting motor, raising reduction box, winch, movable motor, walking reduction box, walking dolly, rope length encoder and rise go up
Lower caging device；The lifting motor is fixedly connected winch by raising reduction box, the coaxially connected two winding drum of winch, wherein
Reel winding described in one sets normal temperature steel wire rope, and another reel winding sets low temperature steel wire rope, the bottom of the steel wire rope
Hook assembly is fixedly installed, the lifting motor drives the spool turns, the walking by the raising reduction box
Motor drives the walking dolly to run forward or backward by the walking reduction box, and the walking dolly is by bearing of walking
Fixation is supported, the rope length encoder is installed on the shaft end of the reel, when the reel rotates, the rope length coding
The signal of device output is sent to the control device, and the upper and lower stopping means of raising is respectively adopted the upper steel of nylon roller writing that surpasses all the others cylinder
The mode of cord.
2. a kind of explosion-proof type swing lever as claimed in claim 1, it is characterised in that the slew gear includes revolution
Motor, pivoting support, rotary planetary decelerator and adjustment flange, the turning motor are fixedly mounted on the arm support top, institute
State pivoting support top to be bolted with the arm support, the pivoting support bottom is fixedly connected with column top,
The turning motor is fixedly connected the rotary planetary decelerator, and the turning motor drives the rotary planetary decelerator to turn
It is dynamic, and drive the pivoting support to rotate by output pinion, so that drive the arm support to turn round, in addition, the adjusting method
Orchid is fixedly installed on the arm support, for adjusting the output pinion of the slew gear bottom and the tooth of the pivoting support
Effective engagement between wheel.
3. a kind of explosion-proof type swing lever as claimed in claim 1, it is characterised in that the rotary locking device includes
Connection otic placode, latch, travel switch and control circuit, the connection otic placode includes upper connection otic placode and lower connection otic placode, described
Upper connection otic placode is fixedly installed on the arm support, and the lower connection otic placode is fixedly installed on column, when crane does not work,
The latch is inserted in the upper lower ear plate, and travel switch is driven on top, and cutting-off controlling circuit, the slew gear can not work.
4. a kind of explosion-proof type swing lever as claimed in claim 1, it is characterised in that the outside of the column cat ladder is also
It is provided with shield cage.
5. a kind of explosion-proof type swing lever as described in any one of claim 1 to 4, it is characterised in that the arm support
Vertically lower winding degree is no more than R/250mm, and R is effective radius, i.e., ground jack centre of gyration line is hung away from vertical with the load of outside termination
Horizontal range between straight center line.
6. a kind of explosion-proof type swing lever as described in any one of claim 1 to 4, it is characterised in that the walking is small
The roller of car uses the material direct machine-shaping of 0Cr17Ni4Cu4Nb high-strength stainless steels.
7. a kind of explosion-proof type swing lever as described in any one of claim 1 to 4, it is characterised in that the crane is also
Including four pin type sensors, four pin type sensors are respectively fixedly disposed at wall stand and the institute at the winch two ends
State on the fulcrum of walking bearing connection, when the winch carries pulling force, the foil gauge hair in each pin type sensor
Raw deformation causes current signal to change, and the current signal of change is sent into the control device.
8. a kind of explosion-proof type swing lever as described in any one of claim 1 to 4, it is characterised in that the arm support
Terminal collision block is respectively provided with rearmost end terminal stopping foremost, and then from half meter of left side of the terminal collision block forward or backward
The dead slow speed collision block is additionally provided with right position.
9. a kind of explosion-proof type swing lever as described in any one of claim 1 to 4, it is characterised in that the crane is also
Including integrated remote-control handle, the integrated remote-control handle point 3 groups of functional form buttons, scram button and standby keys, 3 groups of work(
Energy type button controls the low speed high of crane rise and fall, left and right revolution and front and rear walking to change respectively, and 3 groups of functional forms are pressed
Button uses 2 groups of band switches.
10. a kind of explosion-proof type swing lever as described in any one of claim 1 to 4, it is characterised in that the winch is adopted
With double brake, one is motor from strap brake, and another brake is the parking braking of ratchet and pawl arrangement, what the motor was carried
Brake in the coaxial afterbody of the lifting motor, work schedule is consistent with the action sequence of the lifting motor；Click machine
The ratchet of the parking braking of structure is on the niggerhead by one side of side wall stand, the rotary shaft of the detent mechanism
In wall stand, the detent mechanism is driven by the anti-explosion electric hydraulic cylinder on the outside of wall stand, the electric hydaulic
Cylinder energization work, drives detent mechanism work, and ratchet is disengaged from ratchet, conversely, electrohydraulic cylinder no power, detent mechanism is multiple
Original arrives original position, and ratchet withstands ratchet, prevents the hook assembly on the winch from declining.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710053287.8A CN106744363B (en) | 2017-01-24 | 2017-01-24 | A kind of explosion-proof type swing lever |
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| CN201710053287.8A CN106744363B (en) | 2017-01-24 | 2017-01-24 | A kind of explosion-proof type swing lever |
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| CN106744363B CN106744363B (en) | 2019-05-14 |
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| CN201710053287.8A Active CN106744363B (en) | 2017-01-24 | 2017-01-24 | A kind of explosion-proof type swing lever |
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| CN107298388A (en) * | 2017-08-08 | 2017-10-27 | 无锡宝宏船舶机械有限公司 | Bridge crane with suspender maintenance rig |
| CN109939998A (en) * | 2019-03-20 | 2019-06-28 | 山东省田庄煤矿有限公司 | A kind of dedusting pipe mover |
| CN110143409A (en) * | 2018-02-11 | 2019-08-20 | 张礼生 | A kind of explosion-proof type trestle moving trolley |
| CN112219497A (en) * | 2020-11-03 | 2021-01-15 | 中国热带农业科学院农业机械研究所 | Small-size remote control earth boring machine |
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| Publication number | Publication date |
|---|---|
| CN106744363B (en) | 2019-05-14 |
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Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Applicant after: China Offshore Oil Group Co., Ltd. Applicant after: CNOOC Gas & Power Group Applicant after: South China Marine Machinery Co., Ltd. Address before: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Applicant before: China National Offshore Oil Corporation Applicant before: CNOOC Gas & Power Group Applicant before: South China Marine Machinery Co., Ltd. |
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