CN104973522A - Boom crane - Google Patents

Boom crane Download PDF

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Publication number
CN104973522A
CN104973522A CN201510256850.2A CN201510256850A CN104973522A CN 104973522 A CN104973522 A CN 104973522A CN 201510256850 A CN201510256850 A CN 201510256850A CN 104973522 A CN104973522 A CN 104973522A
Authority
CN
China
Prior art keywords
circuit
steel cable
motor
reel
drum
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
Application number
CN201510256850.2A
Other languages
Chinese (zh)
Other versions
CN104973522B (en
Inventor
鲁霄钢
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taicang Libao Intelligent Technology Co., Ltd
Original Assignee
鲁霄钢
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to CN201610824858.9A priority Critical patent/CN106395646B/en
Priority to CN201610825102.6A priority patent/CN106429924A/en
Application filed by 鲁霄钢 filed Critical 鲁霄钢
Priority to CN201610825078.6A priority patent/CN106629440B/en
Priority to CN201610825170.2A priority patent/CN106276654A/en
Priority to CN201610824409.4A priority patent/CN106276653B/en
Priority to CN201610824850.2A priority patent/CN106429923A/en
Priority to CN201610824425.3A priority patent/CN106379817B/en
Priority to CN201610824421.5A priority patent/CN106348190B/en
Priority to CN201610826168.7A priority patent/CN106395647B/en
Priority to CN201610828269.8A priority patent/CN106276636B/en
Priority to CN201610824407.5A priority patent/CN106429895B/en
Priority to CN201610825285.1A priority patent/CN106402203B/en
Priority to CN201610828294.6A priority patent/CN106348187B/en
Priority to CN201610828104.0A priority patent/CN106379819B/en
Priority to CN201610825105.XA priority patent/CN106276635B/en
Priority to CN201610824877.1A priority patent/CN106379818B/en
Priority to CN201610828215.1A priority patent/CN106379820B/en
Priority to CN201510256850.2A priority patent/CN104973522B/en
Priority to CN201610828338.5A priority patent/CN106379826B/en
Priority to CN201610828346.XA priority patent/CN106335850B/en
Priority to CN201610826170.4A priority patent/CN106395648A/en
Publication of CN104973522A publication Critical patent/CN104973522A/en
Application granted granted Critical
Publication of CN104973522B publication Critical patent/CN104973522B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B66D1/02—Driving gear
    • B66D1/14—Power transmissions between power sources and drums or barrels
    • B66D1/20—Chain, belt, or friction drives, e.g. incorporating sheaves of fixed or variable ratio
    • 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
    • B66D1/02—Driving gear
    • B66D1/14—Power transmissions between power sources and drums or barrels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D49/00—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
    • F16D49/16—Brakes with two brake-blocks
    • 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
    • B66C23/18—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 specially adapted for use in particular purposes
    • B66C23/36—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 specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
    • B66C23/38—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 specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes with separate prime movers for crane and vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
    • B66C1/34—Crane hooks
    • 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
    • B66C13/22—Control systems or devices for electric drives
    • 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
    • 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
    • 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
    • B66C23/88—Safety gear
    • B66C23/90—Devices for indicating or limiting lifting moment
    • B66C23/905—Devices for indicating or limiting lifting moment electrical
    • 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
    • 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
    • B66D1/02—Driving gear
    • B66D1/12—Driving gear incorporating electric motors
    • 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
    • B66D1/02—Driving gear
    • B66D1/14—Power transmissions between power sources and drums or barrels
    • B66D1/16—Power transmissions between power sources and drums or barrels the drums or barrels being freely rotatable, e.g. having a clutch activated independently of a brake
    • B66D1/18—Power transmissions between power sources and drums or barrels the drums or barrels being freely rotatable, e.g. having a clutch activated independently of a brake and the power being transmitted from a continuously operating and irreversible prime mover, i.e. an internal combustion engine, e.g. on a motor vehicle or a portable winch
    • 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
    • B66D1/28—Other constructional details
    • B66D1/30—Rope, cable, or chain drums or barrels
    • 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
    • B66D1/28—Other constructional details
    • B66D1/30—Rope, cable, or chain drums or barrels
    • B66D1/34—Attachment of ropes or cables to drums or barrels
    • 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
    • B66D1/28—Other constructional details
    • B66D1/36—Guiding, or otherwise ensuring winding in an orderly manner, of ropes, cables, or chains
    • 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
    • B66D1/28—Other constructional details
    • B66D1/40—Control devices
    • 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
    • B66D1/28—Other constructional details
    • B66D1/40—Control devices
    • B66D1/42—Control devices non-automatic
    • B66D1/46—Control devices non-automatic electric
    • 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
    • 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
    • B66D1/56—Adaptations of limit switches
    • 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
    • B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
    • B66D5/06—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect
    • B66D5/08—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect embodying blocks or shoes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
    • H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C2700/00—Cranes
    • B66C2700/03—Cranes with arms or jibs; Multiple cranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C2700/00—Cranes
    • B66C2700/03—Cranes with arms or jibs; Multiple cranes
    • B66C2700/0321—Travelling cranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D2700/00—Capstans, winches or hoists
    • B66D2700/01—Winches, capstans or pivots
    • B66D2700/0125—Motor operated winches
    • B66D2700/0141—Electrically actuated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D2700/00—Capstans, winches or hoists
    • B66D2700/01—Winches, capstans or pivots
    • B66D2700/0183—Details, e.g. winch drums, cooling, bearings, mounting, base structures, cable guiding or attachment of the cable to the drum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D2700/00—Capstans, winches or hoists
    • B66D2700/03—Mechanisms with latches or braking devices in general for capstans, hoists or similar devices as well as braking devices actuated electrically or by fluid under pressure

Abstract

The embodiment of the invention discloses a boom crane. A rotary table is mounted at a chassis, and a winding engine is mounted at the rotary table. The head end of a boom frame is hinged to the rotary table, and a lifting hook is hung to the tail end of the boom frame. One end of a lifting oil cylinder is hinged to the rotary table, and the other end of the lifting oil cylinder is hinged to the boom frame. A winding engine driving device is provided with a motor, a shaft coupler and a speed reducer, a winding drum of a winding device is connected to the speed reducer in a transmitting manner, and a steel rope is enwound to the winding drum, an upper pulley block and a lower pulley block. A brake of a brake device tightly holds a brake wheel on a high speed shaft of the speed reducer during braking, and a motor frequency changer of a control device regulates the speed of the motor by changing the frequency. According to a motor control circuit, a contactor is connected in series between a motor protection breaker and the frequency changer, and an upper limit switch and a lower limit switch are connected to a control circuit of the contactor in series. The complete machine, the subsystem or the parts of the boom crane are improved in many aspects, and the performance of the boom crane can be improved.

Description

Jib crane
Technical field
The present invention relates to elevator machinery, particularly relate to a kind of jib crane and subsystem thereof or parts.
Background technology
Jib crane comprises lifting mechanism, luffing mechanism, rotating mechanism etc., relies on the interoperation of these mechanisms, can make weight lifting and carrying in certain cylindrical space.The lifting mechanism of jib crane comprises winch, and the steel cable be around on reel by folding and unfolding lifts by crane workpiece.There is certain deficiency in existing boom type winch design: such as, spool body, the drum shaft structure of reel are comparatively complicated, inconvenience is not installed; And for example, the braking effect of drg is not ideal enough, and parking inhibiting device easily lost efficacy up and down, likely caused safety misadventure; For another example, steel cable winding method is reasonable not, sometimes occurs the problem that steel cable unclamps or is intertwined thereby increasing potential safety hazard; In addition, winch speed can not regulate easily; Etc..Because above-mentioned all many-sided deficiencies, be necessary to be improved hoisting crane and winch thereof.
Summary of the invention
For the defect that prior art exists, the object of the embodiment of the present invention is to improve jib crane complete machine, subsystem or parts, so that the performance of improving product.
For solving above technical matters, the embodiment of the present invention provides a kind of jib crane, comprise chassis, turntable, winch, landing oil cylinder, jib, suspension hook, turntable is installed on chassis, winch is installed on turntable, and the head end of jib is articulated with turntable, and suspension hook hangs on the tail end of jib, one end of landing oil cylinder is articulated with turntable, and the other end of landing oil cylinder is articulated with jib, winch is provided with actuating device, wind2, brake equipment and control setup, actuating device is provided with the motor connected successively, coupler and reductor, the reel of wind2 is in transmission connection in reductor, the steel cable of wind2 is wound in reel, top sheave group and downslide wheels carry out folding and unfolding, the drg of brake equipment acts on the high speed shaft of reductor to hold the brake wheel on reductor high speed shaft tightly when braking, the motor inverter of control setup converts direct supply to industrial frequency AC power supply, and then convert direct supply to frequency, the controlled source of AC of voltage comes by changing frequency to electric machine speed regulation to motor, motor control loop series contactor between motor protective circuit breaker and frequency converter of control setup, upper the next limit switch is connected in series to the control loop of contactless switch.
More preferably, the structure that steel cable is wound in reel, top sheave group and downslide wheels is: steel cable lays out from reel first conductor rope inverse position clockwise, conter clockwise walks around the first lower sheave, the first top sheave, the second lower sheave, the second top sheave successively, after cw walks around the 3rd lower sheave, the 3rd top sheave, the 4th lower sheave successively again, another mistake hour hands wraparound reel second conductor rope position; The first end of steel cable is around in the first end of reel and is fixed on the first pressure rope position, and the second end of steel cable is around in the second end of reel and is fixed on reel second pressure rope position.
More preferably, reel comprises spool body and drum shaft; The top, two ends of spool body arranges pressure rope structure respectively, first end plate of spool body is connected with the slow-speed shaft of reductor by drum connection structure, second end plate of spool body and the first end of stay bearing plate fixed pedestal drum shaft, the second end of drum shaft is supported in drum support.
More preferably, the steel cable pressing plate lower surface of pressure rope structure arranges steel cable indent, and this steel cable pressing plate is fastened by bolts in the screw of spool body to make steel cable be fixed in spool body; Wherein, spool body is arranged steel cable guide groove so that steel cable is introduced along steel cable guide groove/drawn.
More preferably, the connection semiaxis of drum connection structure is supported in terminal pad by cylindrical roller bearing, and the medial end connecting semiaxis arranges baffle plate, connect joint portion, the inner side inner cover plate shutoff of semiaxis, cylindrical roller bearing and terminal pad, connect joint portion, the outside outer cover plate shutoff of semiaxis, cylindrical roller bearing and terminal pad, terminal pad and flange are fixed, and flange is anchored on the first end plate on spool body.
More preferably, the supporting base of drum support is arranged support bearing seat, drum shaft bearing is supported in support bearing seat, drum shaft is supported in drum shaft bearing by tapered roller bearing, joint portion, the inner side inner cover plate shutoff of support bearing seat, drum shaft bearing and tapered roller bearing, joint portion, the outside outer cover plate shutoff of support bearing seat, drum shaft bearing and tapered roller bearing.
More preferably, drum shaft is arranged drum shaft gusset piece to connect lifting limiting device drive end; The U-shaped support of this lifting limiting device is fixed on the outer cover plate of drum support, limiting device housing by screw fastening in U-shaped support, screw support is on limit switch, push pedal is installed on screw rod, active conductive post one end is connected to push pedal, the active conductive post other end is supported on an arm of the limit switch be connected with limit switch, fixing conductive pole is fixed on another arm of limit switch, runner is installed on the end of screw rod, one end of rocking bar connects runner prejudicially, and the other end of rocking bar is connected with drum shaft gusset piece; Limiting device housing installs pilot bar, and this pilot bar and screw rod be arranged in parallel, and push pedal is arranged in pilot bar and slides.
More preferably, frequency converter is provided with filtering decoupling circuit, rectifying circuit, filter circuit, inverter circuit, power factor correction circuit, microcontroller circuit and man-machine interface circuit, filtering decoupling circuit is arranged at the input stage of frequency converter, rectifying circuit, filter circuit are connected successively with inverter circuit, power factor correction circuit to be arranged between rectifying circuit and filter circuit and to be connected to the power factor correction end of microcontroller circuit, inverter circuit is connected to the drive singal end of microcontroller circuit, and man-machine interface circuit is connected to the input end of microcontroller circuit.
More preferably, inverter circuit comprises power tube driving chip and six power tubes: power tube driving chip is connected to the microprocessor of microcontroller circuit, to drive corresponding power tube alternate conduction and shutoff according to the pulse width modulating signal of microprocessor output; Six power tubes are divided into three groups, and every group power controls a phase winding of motor, corresponding access diode between the source electrode of each power tube and drain electrode.
More preferably, in described drg, the first brake control lever, the first brake control lever, the band driving telescopic rod of actuating device, one end of driven expansion link are articulated with Brake Block respectively; The other end of the first brake control lever, driving telescopic rod, driven expansion link is articulated with an arm of L shape connecting rod respectively; The other end of the second brake control lever and linear rod hinge connection, the other end of linear connecting rod and another arm of L shape connecting rod hinged; First slipper is installed on the inner side of the first brake control lever, and the second slipper is installed on the inner side of the second brake control lever, and the intrados of this first slipper and the intrados of the second slipper hold the brake wheel on reductor high speed shaft tightly when braking.
Compared with prior art, the embodiment of the present invention is improved jib crane, properties of product can be improved thus, it shows in the following areas: optimize lifting drum body, drum shaft and roll support, draw bail, reel layout is more reasonable, structure is more compact, installs also convenient; Improve spool body structure and steel cable canoe and press rope structure, the problem that can steel cable avoided better to unclamp or be intertwined, is conducive to eliminating safe hidden trouble; Improve drg, lifting limiting device and motor stopping control mechanism, can stop in time according to predetermined intention, brake in the situations such as spacing, sudden stop, thus effectively reduce safety misadventure; Adopt frequency converter to winch electric machine speed regulation, lifting velocity can be controlled in ground, aspect.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of jib crane of the present invention;
Fig. 2 is the front view of winch of the present invention;
Fig. 3 is the birds-eye view of winch of the present invention;
Fig. 4 is the right elevation of winch of the present invention;
Fig. 5 is the schematic diagram of drg of the present invention;
Fig. 6 is steel cable winding structure schematic diagram of the present invention;
Fig. 7 is the schematic diagram of reel of the present invention and drum connection structure, pressure rope structure and drum support;
Fig. 8 is the front view of spool body of the present invention;
Fig. 9 is the longitudinal sectional view of spool body of the present invention;
Figure 10 is the schematic diagram of drum shaft of the present invention;
Figure 11 is drum connection structure schematic diagram of the present invention;
Figure 12 is that the present invention presses rope structure schematic diagram;
Figure 13 is drum support schematic diagram of the present invention;
Figure 14 is the schematic diagram that the present invention is elevated limiting device;
Figure 15 is the inner structure schematic diagram that the present invention is elevated limiting device;
Figure 16 is the electrical schematic diagram of motor stopping control mechanism of the present invention;
Figure 17 is the electrical connection graph of the limit switch of motor stopping control mechanism of the present invention;
Figure 18 is the block scheme of motor speed regulation system of the present invention;
Figure 19 is the schematic block circuit diagram of frequency converter of the present invention;
Figure 20 is the schematic circuit diagram of inverter of the present invention.
Detailed description of the invention
In order to understand know-why and the working process of the embodiment of the present invention better, describe the present invention further below in conjunction with drawings and the specific embodiments.
The structure of Fig. 1-Figure 20 to winch of the present invention, subsystem or parts indicates, and identical label is wherein expressed as same parts.
See Fig. 1, the structure of jib crane of the present invention is shown.This jib crane comprises the parts such as chassis S1, turntable S2, winch S3, landing oil cylinder S4, jib S5, suspension hook S6, turntable S2 is loaded on chassis S1, winch S3 is loaded on turntable, the head end of jib S5 is articulated with turntable S2, suspension hook 6 hangs on the tail end of jib S5, one end of landing oil cylinder S4 is articulated with turntable S2, and the other end of landing oil cylinder S4 is articulated with jib S5.Turntable S2 rotates and jib S5 is rotated, oil cylinder S4 is flexible makes jib S5 landing, speed change oil cylinder (scheming not shown) makes jib S5 luffing, and winch S3 folding and unfolding is around in the steel cable of reel, jib assembly pulley and lifting hook pulley group to lift by crane the workpiece on suspension hook S6.The present invention has carried out many places improvement for winch S3 and subsystem thereof and parts, below further illustrates.
Simultaneously see Fig. 2-Fig. 4, the complete machine structure of winch of the present invention is shown.This winch comprises actuating device, wind2, brake equipment and control setup (scheming not shown): actuating device is made up of the parts such as motor M 01 (being preferably variable-frequency motor), coupler 7, reductor 1, and motor M 01, coupler 7, reductor 1 connect successively; Wind2 is made up of reel 2, top sheave group 3 and the parts such as downslide wheels and steel cable, and reel 2 is in transmission connection in reductor 1 and turns around to make reel 2, and steel cable is wound on reel 2, top sheave group 3 and downslide wheels and carries out folding and unfolding; Brake equipment is made up of drg 5 and annex etc., and drg 5 acts on the high speed shaft of reductor 1 or slow-speed shaft and brakes; Control setup is provided with motor stopping control mechanism, and this motor stopping control mechanism stops motor running when the upper limit preset or lower limit.
As shown in figs 2-4, the concrete structure of this winch is: reductor 1 and drum support 4 are installed on frame S01 top, one end of reel 2 is rotationally connected with drum support 4, the other end of reel 2 is in transmission connection in the slow-speed shaft of reductor 1 by drum connection structure 8, and the high speed shaft of reductor 1 is connected with the power take-off shaft of motor M 01 by coupler (outside is provided with coupler clamshell) 7; Top sheave group 3 is positioned frame S01, and steel cable is wound in reel 2, top sheave group 3 and downslide wheels with certain style canoe, correspondingly when motor M 01 forward or reverse carries out folding and unfolding; Drg 5 is installed on reductor 1, can hold the brake wheel 6 on reductor 1 high speed shaft tightly and brake during braking.
In this winch, optimize spool body, drum shaft and roll support thereof, draw bail, reel layout is more reasonable, and structure is more compact, installs also convenient; Improve spool body structure and steel cable canoe and Ya Sheng mechanism, the problem that can steel cable avoided better to unclamp or be intertwined, is conducive to eliminating safe hidden trouble; Improve drg, lifting limiting device and motor stopping control mechanism, can stop in time according to predetermined intention, brake in the situations such as spacing, sudden stop, thus effectively reduce safety misadventure.Below further describe.
Fig. 2-Fig. 4 illustrates drg mounting structure, and this drg 5 is installed on the high speed shaft of reductor 1, by holding brake wheel 6 tightly, reductor 1 is braked, and makes the reel 2 on the slow-speed shaft of reductor 1 brake thus.Below further the structure of drg is described in detail.
See Fig. 5, the structure of drg of the present invention is shown.In this drg 5, the first brake control lever 52, first brake control lever 53, the band driving telescopic rod (can be cylinder or oil cylinder) 59 of actuating device 50, one end of driven expansion link 58 are articulated with Brake Block 51 respectively; The other end of the first brake control lever 52, driving telescopic rod 59, driven expansion link 58 is articulated with an arm of L shape connecting rod 57 respectively; The other end and the linear connecting rod 55 of the second brake control lever 53 are hinged, the other end of linear connecting rod 55 and another arm of L shape connecting rod 57 hinged; First slipper 56 is installed on the inner side of the first brake control lever 52, and the second slipper 54 is installed on the inner side of the second brake control lever 53, and the intrados of this first slipper 56 and the intrados of the second slipper 54 hold the brake wheel 6 on reductor 1 high speed shaft tightly when braking.This brake mode structure is simple, and braking response is fast, and effect is better.
See Fig. 6, steel cable winding structure of the present invention is shown.In this steel cable winding structure, steel cable 10 is wound in reel 2 by following manner, top sheave (jib pulley) organize 3 and lower sheave (lifting hook pulley) organize 9: the first end of steel cable 10 is around in the first end of reel 2 and is fixed on the first pressure rope position 2a, second end of steel cable 10 is around in the second end of reel 2 and is fixed on reel 2 second pressure rope position 2d, steel cable 10 lays out from reel 2 first conductor rope position 2b anticlockwise direction, conter clockwise walks around the first lower sheave 91 successively, first top sheave 31, second lower sheave 92, second top sheave 32, cw walks around the 3rd lower sheave 93 successively again, 3rd top sheave 33, after 4th lower sheave 94, another mistake hour hands wraparound reel 2 second conductor rope position 2c.Steel cable 10 adopts this canoe, can reduce the probability of occurrence that steel cable was wound around, unclamped etc. bad phenomenon.
See Fig. 7, reel of the present invention and drum connection structure, pressure rope structure and drum support are shown.Reel 2 comprises spool body 21 and drum shaft 22, the first end of this drum shaft 22 is fixedly supported to the second end of spool body 21, the first end of spool body 21 is connected with the slow-speed shaft of reductor 1 by drum connection structure (the I part in Fig. 6), second end of drum shaft 22 is supported in drum support (the III part in Fig. 6), installs very convenient.In addition, the top, two ends of spool body 21 arranges pressure rope structure (the II part in Fig. 6) respectively, can fix the end of steel cable 10 preferably.
Simultaneously see 8-Fig. 9, the structure of reel of the present invention is shown.This spool body 21 arranges the first end plate 25, second end plate 24 and stay bearing plate 23, first end plate 25 of spool body 21 is connected by the slow-speed shaft of drum connection structure with reductor 1, second end plate 24 of spool body 21 and stay bearing plate 23 fixed pedestal drum shaft 22, this drum shaft 22 is installed on drum support, installs very convenient.
As shown in Fig. 2-Fig. 9, this spool body 21 arranges steel cable guide groove 211 above, is convenient to steel cable 10 and introduces along steel cable guide groove 211/draw, be conducive to steel cable 10 thus and be wound around in an orderly manner.
See Figure 10, the structure of drum shaft of the present invention is shown.This drum shaft 22 comprises drum shaft main body 222, the first end of drum shaft main body 222 arranges first shaft shoulder 221, second end of drum shaft main body 222 arranges second shaft shoulder 224 and the 3rd shaft shoulder 225, wherein, the external diameter of drum shaft main body 222, first shaft shoulder 221, second shaft shoulder 224 and the 3rd shaft shoulder 225 reduces successively, and between drum shaft main body 222 and second shaft shoulder 224, tapered transitional 223 is set, this drum shaft 22 structural strength is better, also convenient installation.
See Figure 11, drum connection structure of the present invention is shown.In this drum connection structure, connect semiaxis 84 and be supported in terminal pad 82 by cylindrical roller bearing 87, and the medial end connecting semiaxis 84 arranges baffle plate 86, connect joint portion, inner side inner cover plate 85 shutoff of semiaxis 84, cylindrical roller bearing 87 and terminal pad 82, connect joint portion, outside outer cover plate 83 shutoff of semiaxis 84, cylindrical roller bearing 87 and terminal pad 82, terminal pad 82 is fixed with flange 81, and flange 81 is anchored on the first end plate 25 on spool body 21.This structure connects reliable, easy for installation.
See Figure 12, illustrate that the present invention presses rope structure.This pressure rope structure 11 comprises steel cable pressing plate 111, the lower surface of steel cable pressing plate arranges steel cable indent 1121, this steel cable pressing plate 111 is anchored in the screw of spool body 21 by bolt 112, makes steel cable 10 be reliably fixed on spool body 21 and can not deviate from, increases safety factor thus.
See Figure 13, drum support of the present invention is shown.In this drum support 4, supporting base 41 is arranged support bearing seat 43, drum shaft bearing 44 is supported in support bearing seat 43, drum shaft 22 is supported in drum shaft bearing 44 by tapered roller bearing 45, support bearing seat 43, joint portion, inner side inner cover plate 42 shutoff of drum shaft bearing 44 and tapered roller bearing 45, support bearing seat 43, joint portion, outside outer cover plate 47 shutoff of drum shaft bearing 44 and tapered roller bearing 45.This compact conformation, it is convenient to install.
As shown in figure 13, the present embodiment illustrates the mounting structure of lifting limiting device.In Figure 12, drum shaft 22 is arranged drum shaft gusset piece 46, in order to install the drive end (rocking bar as screw lifting limiting device 12) of lifting limiting device 12, when reel 2 rotational angle exceedes predetermined value (revolution), electrical connection can be disconnected to prevent reel from rotating further, can limit adjustable height like this.Below in conjunction with Figure 12-Figure 14, further describe.
See Figure 14-Figure 15, illustrate that the present invention is elevated limiting device structure.Simultaneously with reference to Figure 12, this lifting limiting device 12 comprises U-shaped support 121, rocking bar 122, screw rod 123, runner 124, limiting device housing 125, pilot bar 126, push pedal 127, active conductive post 128, limit switch 129 and fixing conductive pole 120:U shape support 121 are fixed on the outer cover plate 47 be connected with drum shaft 22, limiting device housing 125 by screw fastening in U-shaped support 121, screw rod 123 is supported on limiting device housing 125, push pedal 127 is installed on screw rod 123, active conductive post 128 one end is connected to push pedal 127, active conductive post 128 other end is supported on an arm of the limit switch 129 be connected with limiting device housing 125, fixing conductive pole 120 is fixed on another arm of limit switch 129, runner 124 is installed on the end of screw rod 123, one end of rocking bar 122 connects runner 124 prejudicially, the other end of rocking bar 122 is connected with drum shaft gusset piece 46.
In addition, limiting device pedestal 125 also installs pilot bar 126, this pilot bar 126 be arranged in parallel with screw rod 123, and push pedal 127 is arranged in pilot bar 126 and slides, to ensure to move reposefully.
In this embodiment, the position of push pedal 127 can be adjusted in advance.When reel 2 scrolling, rocking bar 122 rotates with drum shaft gusset piece 46, by runner 124, screw rod 123 is rotated, and push pedal 127 translation drives active conductive post 128 to depart from fixing conductive pole 120, disconnect electrical connection thus and play position-limiting action, improving safety performance thus.
The structure of Figure 14-Figure 15 to lifting limiting device 12 is illustrated, and namely this lifting limiting device can be used for upper limit, also can be used for lower limit.The limit switch being about to lifting limiting device is connected to the control loop of the motor M 01 of winch, stops motor M 01 to run, play safety guard-safeguard effect thus by the motor protective circuit breaker triggered in motor control loop.
The present invention is directed to prevent, the spacing situation of spacing appearance, improve in electric control system simultaneously, be described as follows.
Simultaneously see Figure 16-Figure 17, the circuit structure of motor stopping control mechanism of the present invention is shown.This motor stopping control mechanism can be used for winch, also can be used for the jacking system of other type, and its electrical structure is: in the control loop of motor M 01, adds a contactless switch KM01 between motor protective circuit breaker QF01 and frequency converter VF01; Upper the next limit switch SQ01, SQ02 are connected in series in the control loop of this contactless switch KM01.Herein; the terminal 1-6 of motor protective circuit breaker QF01; A1, A2 (three groups of terminals 1,2) of contactless switch KM01; terminal R, S, T, V, W, PE of frequency converter VF01; the terminal 11,12 of limit switch SQ01, SQ02; and the terminal 13,14 of spacing unlock key knob SB01 is connected according to Figure 15 with Figure 16, no longer specifically launches explanation.
After limit switch SQ01 or SQ02 is triggered, directly cut off the coil power of contactless switch KM01, contactless switch KM01 discharges, and cuts off the power supply in frequency converter VF01 loop thus, thus stops the operation of motor M 01 fast; After this, can be unlocked by rotary stopper unlock key knob SB01.This mode, decrease the intermediate link of process limit signal, time fault is occurred, motor can stop at once, avoids the damage of equipment and the injures and deaths of personnel.
Conveniently change the speed of winch S3, the present invention adopts motor variable-frequency speed-regulating to control.Below be described.
See Figure 18, the block scheme of motor speed regulation system of the present invention is shown.This motor speed regulation system comprises the power supply M03, frequency converter M02 and the motor M 01 that connect successively, this frequency converter M02 adopts AC-DC-AC mode, first industrial frequency AC power supply M03 is converted to direct supply by rectifier, and then convert direct supply to frequency, the equal controollable source of AC of voltage to supply motor M 01 by inverter, like this by changing frequency can change the rotating speed of motor M 01.
As shown in figure 18, the input stage of this frequency converter M02 is provided with filtering decoupling circuit, it is preferably RC filtering decoupling circuit, is made up of the current-limiting resistance R be connected in series and filter capacitor C, makes the output plus terminal of power supply M03 thus and exports current-limiting resistance R and the filter capacitor C that ground termination enters serial connection.This filtering decoupling circuit, as the preposition simulation low-pass filter of AC signal input channel, has jamproof effect concurrently; Access decoupling capacitance between alternating current-direct current signal input channel two terminals, can be high frequency differential mode interfering signal and bypass is provided.
See Figure 19, the schematic block circuit diagram of frequency converter of the present invention is shown.The frequency converter M02 of the present embodiment comprises the parts such as rectifying circuit M021, power factor correction circuit M022, filter circuit M023, inverter circuit M024 and microcontroller circuit M025, man-machine interface circuit M026, wherein: rectifying circuit M021 is piled by rectifier diode or bridge and forms (being preferably full bridge rectifier), comprise necessary interference filtering circuit, its radical function is that alternating current is converted to direct current (DC); Circuit of power factor correction M022 is selectable unit (SU), be made up of power semiconductor and control chip, it is also connected to the power factor correction end of microcontroller circuit M025, and effect makes received current close to sinusoidal waveform, reduce mains by harmonics content, realize the object improving power factor; Filter circuit M023 (being preferably RC filter circuit), primarily of element compositions such as chemical capacitors, completes galvanic filtering and energy storage effect; Inverter circuit M024 is made up of power model and driving circuit, its power model can be intelligent power driving tube chip, and it is also connected to the drive singal end of described microcontroller circuit, and its radical function is, complete the conversion of direct current (DC) to three plase alternating current, realize frequency modulation and voltage modulation object; Microcontroller circuit M025 is made up of microprocessor (DSP) and peripheral circuit; its order of sending according to man-machine interface circuit M026; send corresponding command signal; control circuit of power factor correction M022 and inverter circuit M024 to work; and according to electronic feedback information, carry out necessary circuit protection and fault handling.Like this, this embodiment controls the output mode of frequency converter M02 by microcontroller circuit, is conducive to neatly by pre-provisioning request output voltage, thus meets the demand of different user.
See Figure 20, the schematic circuit diagram of inverter of the present invention are shown.Specifically for the inverter circuit M024 of motor M 01 and the example of microcontroller circuit, its mode of operation is: civil power becomes direct current (DC) through rectifying circuit M021, after chemical capacitor filtering, the power input of access inverter circuit M024, accesses filter capacitor between its power input.And the microprocessor of microcontroller circuit is according to the setting signal of man-machine interface circuit, motor M 01 is controlled.
In the present embodiment, inverter circuit M024 comprises power tube driving chip, this power tube driving chip is connected to the microprocessor (MCU/DSP) of microcontroller circuit, so that the pulse width modulating signal exported according to microprocessor, drives corresponding power tube alternate conduction and shutoff.Concrete, described inverter circuit M024 comprises six power tube Q1 ~ Q6, and these six power tubes are divided into three groups, and every group power controls a phase winding of three phase electric machine M01.
The concrete connection mode of each power tube is: the source electrode of power tube Q1, Q2, Q3 connects one end of direct supply jointly, the drain electrode of power tube Q4, Q5, Q6 connects the other end of direct supply jointly, the point of connection of the drain electrode of power tube Q1 and the source electrode of power tube Q4 connects the U phase terminal of motor, the point of connection of the drain electrode of power tube Q2 and the source electrode of power tube Q5 connects the V phase terminal of motor, and the drain electrode of power tube Q3 and the source electrode point of connection of power tube Q6 connect the W phase terminal of motor; The grid of power tube Q1, Q2, Q3, Q4, Q5, Q6 connects a mouth of power tube driving chip respectively, and each input end of this power tube driving chip controls by output pulse width conditioning signal PWM1, PWM2, PWM3, PWM4, PWM5, PWM6 Zhong mono-tunnel of microcontroller circuit respectively.These six power tube Q1 ~ Q6 source electrode and drain electrode between corresponding access diode D1 ~ D6.
During start, microprocessor produces corresponding 6 road pulse width modulating signals according to the motor speed of setting, i.e. drive singal PWM1 ~ PWM6; 6 power tube (MOSFET or IGBT) Q1 ~ Q6 of inverter M024 are driven by power tube driving chip; The alternate conduction of these power tubes and shutoff, produce three-phase modulations waveform, output voltage is adjustable, the three plase alternating current of changeable frequency, outputs to U, V, W terminals of motor M 01, thus realizes the stepless frequency control of motor M 01.
Although the present invention with preferred embodiment openly as above; but it is not for limiting the present invention; any those skilled in the art without departing from the spirit and scope of the present invention; can make possible variation and amendment, the scope that therefore protection scope of the present invention should define with the claims in the present invention is as the criterion.

Claims (10)

1. a jib crane, it is characterized in that, comprise chassis, turntable, winch, landing oil cylinder, jib, suspension hook, turntable is installed on chassis, winch is installed on turntable, and the head end of jib is articulated with turntable, and suspension hook hangs on the tail end of jib, one end of landing oil cylinder is articulated with turntable, and the other end of landing oil cylinder is articulated with jib, winch is provided with actuating device, wind2, brake equipment and control setup, actuating device is provided with the motor connected successively, coupler and reductor, the reel of wind2 is in transmission connection in reductor, the steel cable of wind2 is wound in reel, top sheave group and downslide wheels carry out folding and unfolding, the drg of brake equipment acts on the high speed shaft of reductor to hold the brake wheel on reductor high speed shaft tightly when braking, the motor inverter of control setup converts direct supply to industrial frequency AC power supply, and then convert direct supply to frequency, the controlled source of AC of voltage comes by changing frequency to electric machine speed regulation to motor, motor control loop series contactor between motor protective circuit breaker and frequency converter of control setup, upper the next limit switch is connected in series to the control loop of contactless switch.
2. jib crane as claimed in claim 1, it is characterized in that, the structure that steel cable is wound in reel, top sheave group and downslide wheels is: steel cable lays out from reel first conductor rope inverse position clockwise, conter clockwise walks around the first lower sheave, the first top sheave, the second lower sheave, the second top sheave successively, after cw walks around the 3rd lower sheave, the 3rd top sheave, the 4th lower sheave successively again, another mistake hour hands wraparound reel second conductor rope position; The first end of steel cable is around in the first end of reel and is fixed on the first pressure rope position, and the second end of steel cable is around in the second end of reel and is fixed on reel second pressure rope position.
3. jib crane as claimed in claim 2, it is characterized in that, reel comprises spool body and drum shaft; The top, two ends of spool body arranges pressure rope structure respectively, first end plate of spool body is connected with the slow-speed shaft of reductor by drum connection structure, second end plate of spool body and the first end of stay bearing plate fixed pedestal drum shaft, the second end of drum shaft is supported in drum support.
4. jib crane as claimed in claim 3, is characterized in that, the steel cable pressing plate lower surface of pressure rope structure arranges steel cable indent, and this steel cable pressing plate is fastened by bolts in the screw of spool body to make steel cable be fixed in spool body; Wherein, spool body is arranged steel cable guide groove so that steel cable is introduced along steel cable guide groove/drawn.
5. jib crane as claimed in claim 4, it is characterized in that, the connection semiaxis of drum connection structure is supported in terminal pad by cylindrical roller bearing, and the medial end connecting semiaxis arranges baffle plate, connect joint portion, the inner side inner cover plate shutoff of semiaxis, cylindrical roller bearing and terminal pad, connect joint portion, the outside outer cover plate shutoff of semiaxis, cylindrical roller bearing and terminal pad, terminal pad and flange are fixed, and flange is anchored on the first end plate on spool body.
6. jib crane as claimed in claim 5, it is characterized in that, the supporting base of drum support is arranged support bearing seat, drum shaft bearing is supported in support bearing seat, drum shaft is supported in drum shaft bearing by tapered roller bearing, joint portion, the inner side inner cover plate shutoff of support bearing seat, drum shaft bearing and tapered roller bearing, joint portion, the outside outer cover plate shutoff of support bearing seat, drum shaft bearing and tapered roller bearing.
7. jib crane as claimed in claim 6, is characterized in that, drum shaft is arranged drum shaft gusset piece to connect lifting limiting device drive end; The U-shaped support of this lifting limiting device is fixed on the outer cover plate of drum support, limiting device housing by screw fastening in U-shaped support, screw support is on limit switch, push pedal is installed on screw rod, active conductive post one end is connected to push pedal, the active conductive post other end is supported on an arm of the limit switch be connected with limit switch, fixing conductive pole is fixed on another arm of limit switch, runner is installed on the end of screw rod, one end of rocking bar connects runner prejudicially, and the other end of rocking bar is connected with drum shaft gusset piece; Limiting device housing installs pilot bar, and this pilot bar and screw rod be arranged in parallel, and push pedal is arranged in pilot bar and slides.
8. jib crane as claimed in claim 7, it is characterized in that, frequency converter is provided with filtering decoupling circuit, rectifying circuit, filter circuit, inverter circuit, power factor correction circuit, microcontroller circuit and man-machine interface circuit, filtering decoupling circuit is arranged at the input stage of frequency converter, rectifying circuit, filter circuit is connected successively with inverter circuit, power factor correction circuit to be arranged between rectifying circuit and filter circuit and to be connected to the power factor correction end of microcontroller circuit, inverter circuit is connected to the drive singal end of microcontroller circuit, man-machine interface circuit is connected to the input end of microcontroller circuit.
9. jib crane as claimed in claim 8, it is characterized in that, inverter circuit comprises power tube driving chip and six power tubes: power tube driving chip is connected to the microprocessor of microcontroller circuit, to drive corresponding power tube alternate conduction and shutoff according to the pulse width modulating signal of microprocessor output; Six power tubes are divided into three groups, and every group power controls a phase winding of motor, corresponding access diode between the source electrode of each power tube and drain electrode.
10. jib crane as claimed in claim 9, is characterized in that, in described drg, the first brake control lever, the first brake control lever, the band driving telescopic rod of actuating device, one end of driven expansion link are articulated with Brake Block respectively; The other end of the first brake control lever, driving telescopic rod, driven expansion link is articulated with an arm of L shape connecting rod respectively; The other end of the second brake control lever and linear rod hinge connection, the other end of linear connecting rod and another arm of L shape connecting rod hinged; First slipper is installed on the inner side of the first brake control lever, and the second slipper is installed on the inner side of the second brake control lever, and the intrados of this first slipper and the intrados of the second slipper hold the brake wheel on reductor high speed shaft tightly when braking.
CN201510256850.2A 2015-05-20 2015-05-20 Jib crane Active CN104973522B (en)

Priority Applications (21)

Application Number Priority Date Filing Date Title
CN201610825285.1A CN106402203B (en) 2015-05-20 2015-05-20 Arm crane with brake
CN201610825078.6A CN106629440B (en) 2015-05-20 2015-05-20 A kind of jib crane of configuration pressure rope structure
CN201610825170.2A CN106276654A (en) 2015-05-20 2015-05-20 A kind of jib crane optimizing reel mounting structure
CN201610824409.4A CN106276653B (en) 2015-05-20 2015-05-20 Arm crane with novel frequency converter
CN201610824850.2A CN106429923A (en) 2015-05-20 2015-05-20 Novel arm type crane
CN201610824425.3A CN106379817B (en) 2015-05-20 2015-05-20 A kind of hoist engine
CN201610824421.5A CN106348190B (en) 2015-05-20 2015-05-20 A kind of hoist engine
CN201610826168.7A CN106395647B (en) 2015-05-20 2015-05-20 A kind of jib crane with new type inverter
CN201610828269.8A CN106276636B (en) 2015-05-20 2015-05-20 A kind of motor stopping control mechanism
CN201610824407.5A CN106429895B (en) 2015-05-20 2015-05-20 A kind of jib crane optimizing steel cable winding arrangement
CN201610824858.9A CN106395646B (en) 2015-05-20 2015-05-20 A kind of jib crane
CN201610828294.6A CN106348187B (en) 2015-05-20 2015-05-20 A kind of jib crane with reel
CN201610826170.4A CN106395648A (en) 2015-05-20 2015-05-20 Jig hoist provided with optimized coiling block connecting structure
CN201610825105.XA CN106276635B (en) 2015-05-20 2015-05-20 A kind of jib crane configuring novel winding drum
CN201610824877.1A CN106379818B (en) 2015-05-20 2015-05-20 A kind of jib crane optimizing drum support
CN201610828215.1A CN106379820B (en) 2015-05-20 2015-05-20 A kind of jib crane configuring shutdown control system
CN201510256850.2A CN104973522B (en) 2015-05-20 2015-05-20 Jib crane
CN201610825102.6A CN106429924A (en) 2015-05-20 2015-05-20 Arm type crane for optimizing lifting limiter
CN201610828346.XA CN106335850B (en) 2015-05-20 2015-05-20 A kind of brake
CN201610828104.0A CN106379819B (en) 2015-05-20 2015-05-20 A kind of motor speed regulation system
CN201610828338.5A CN106379826B (en) 2015-05-20 2015-05-20 A kind of reel

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Application Number Priority Date Filing Date Title
CN201510256850.2A CN104973522B (en) 2015-05-20 2015-05-20 Jib crane

Related Child Applications (20)

Application Number Title Priority Date Filing Date
CN201610828104.0A Division CN106379819B (en) 2015-05-20 2015-05-20 A kind of motor speed regulation system
CN201610824858.9A Division CN106395646B (en) 2015-05-20 2015-05-20 A kind of jib crane
CN201610826168.7A Division CN106395647B (en) 2015-05-20 2015-05-20 A kind of jib crane with new type inverter
CN201610824407.5A Division CN106429895B (en) 2015-05-20 2015-05-20 A kind of jib crane optimizing steel cable winding arrangement
CN201610825170.2A Division CN106276654A (en) 2015-05-20 2015-05-20 A kind of jib crane optimizing reel mounting structure
CN201610825078.6A Division CN106629440B (en) 2015-05-20 2015-05-20 A kind of jib crane of configuration pressure rope structure
CN201610825105.XA Division CN106276635B (en) 2015-05-20 2015-05-20 A kind of jib crane configuring novel winding drum
CN201610824421.5A Division CN106348190B (en) 2015-05-20 2015-05-20 A kind of hoist engine
CN201610828215.1A Division CN106379820B (en) 2015-05-20 2015-05-20 A kind of jib crane configuring shutdown control system
CN201610824409.4A Division CN106276653B (en) 2015-05-20 2015-05-20 Arm crane with novel frequency converter
CN201610828269.8A Division CN106276636B (en) 2015-05-20 2015-05-20 A kind of motor stopping control mechanism
CN201610828294.6A Division CN106348187B (en) 2015-05-20 2015-05-20 A kind of jib crane with reel
CN201610828338.5A Division CN106379826B (en) 2015-05-20 2015-05-20 A kind of reel
CN201610828346.XA Division CN106335850B (en) 2015-05-20 2015-05-20 A kind of brake
CN201610824877.1A Division CN106379818B (en) 2015-05-20 2015-05-20 A kind of jib crane optimizing drum support
CN201610826170.4A Division CN106395648A (en) 2015-05-20 2015-05-20 Jig hoist provided with optimized coiling block connecting structure
CN201610825102.6A Division CN106429924A (en) 2015-05-20 2015-05-20 Arm type crane for optimizing lifting limiter
CN201610825285.1A Division CN106402203B (en) 2015-05-20 2015-05-20 Arm crane with brake
CN201610824425.3A Division CN106379817B (en) 2015-05-20 2015-05-20 A kind of hoist engine
CN201610824850.2A Division CN106429923A (en) 2015-05-20 2015-05-20 Novel arm type crane

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CN104973522A true CN104973522A (en) 2015-10-14
CN104973522B CN104973522B (en) 2016-11-23

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Family Applications (21)

Application Number Title Priority Date Filing Date
CN201610826170.4A Pending CN106395648A (en) 2015-05-20 2015-05-20 Jig hoist provided with optimized coiling block connecting structure
CN201610825078.6A Active CN106629440B (en) 2015-05-20 2015-05-20 A kind of jib crane of configuration pressure rope structure
CN201510256850.2A Active CN104973522B (en) 2015-05-20 2015-05-20 Jib crane
CN201610824858.9A Active CN106395646B (en) 2015-05-20 2015-05-20 A kind of jib crane
CN201610828338.5A Active CN106379826B (en) 2015-05-20 2015-05-20 A kind of reel
CN201610828346.XA Active CN106335850B (en) 2015-05-20 2015-05-20 A kind of brake
CN201610825285.1A Active CN106402203B (en) 2015-05-20 2015-05-20 Arm crane with brake
CN201610828294.6A Active CN106348187B (en) 2015-05-20 2015-05-20 A kind of jib crane with reel
CN201610825170.2A Pending CN106276654A (en) 2015-05-20 2015-05-20 A kind of jib crane optimizing reel mounting structure
CN201610824421.5A Active CN106348190B (en) 2015-05-20 2015-05-20 A kind of hoist engine
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CN201610824409.4A Active CN106276653B (en) 2015-05-20 2015-05-20 Arm crane with novel frequency converter
CN201610828215.1A Active CN106379820B (en) 2015-05-20 2015-05-20 A kind of jib crane configuring shutdown control system
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CN201610825105.XA Active CN106276635B (en) 2015-05-20 2015-05-20 A kind of jib crane configuring novel winding drum
CN201610824877.1A Active CN106379818B (en) 2015-05-20 2015-05-20 A kind of jib crane optimizing drum support
CN201610824407.5A Active CN106429895B (en) 2015-05-20 2015-05-20 A kind of jib crane optimizing steel cable winding arrangement
CN201610828104.0A Active CN106379819B (en) 2015-05-20 2015-05-20 A kind of motor speed regulation system
CN201610824850.2A Pending CN106429923A (en) 2015-05-20 2015-05-20 Novel arm type crane
CN201610824425.3A Active CN106379817B (en) 2015-05-20 2015-05-20 A kind of hoist engine
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CN201610828346.XA Active CN106335850B (en) 2015-05-20 2015-05-20 A kind of brake
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CN201610825102.6A Pending CN106429924A (en) 2015-05-20 2015-05-20 Arm type crane for optimizing lifting limiter
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CN201610828215.1A Active CN106379820B (en) 2015-05-20 2015-05-20 A kind of jib crane configuring shutdown control system
CN201610828269.8A Active CN106276636B (en) 2015-05-20 2015-05-20 A kind of motor stopping control mechanism
CN201610825105.XA Active CN106276635B (en) 2015-05-20 2015-05-20 A kind of jib crane configuring novel winding drum
CN201610824877.1A Active CN106379818B (en) 2015-05-20 2015-05-20 A kind of jib crane optimizing drum support
CN201610824407.5A Active CN106429895B (en) 2015-05-20 2015-05-20 A kind of jib crane optimizing steel cable winding arrangement
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