CN106395646B - A kind of jib crane - Google Patents

A kind of jib crane Download PDF

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Publication number
CN106395646B
CN106395646B CN201610824858.9A CN201610824858A CN106395646B CN 106395646 B CN106395646 B CN 106395646B CN 201610824858 A CN201610824858 A CN 201610824858A CN 106395646 B CN106395646 B CN 106395646B
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CN
China
Prior art keywords
reel
motor
conductive column
limit switch
limiter
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Active
Application number
CN201610824858.9A
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Chinese (zh)
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CN106395646A (en
Inventor
鲁霄钢
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SUZHOU DACHENG YOUFANG DATA TECHNOLOGY Co.,Ltd.
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鲁霄钢
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Priority to CN201610824858.9A priority Critical patent/CN106395646B/en
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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
    • 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
    • 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
    • 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
    • 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 present invention discloses a kind of jib crane, the lifting limiter that the next limit switch uses thereon includes U-bracket, rocking bar, screw rod, runner, limiter shell, push plate, active conductive column, limit switch and fixed conductive column: U-bracket is fixed on the outer cover plate with reel axis connection, limiter shell is anchored on U-bracket by screw, screw support is on limiter shell, push plate is installed on screw rod, active conductive column one end is connected to push plate, the active conductive column other end is supported on an arm of the limit switch being connected with limiter shell, fixed conductive column is fixed on another arm of limit switch, runner is installed on the end of screw rod, one end of rocking bar prejudicially connects runner, the other end of rocking bar is connected with spool shaft gusset piece.The present invention can promote arm-type crane products performance.

Description

A kind of jib crane
The present invention is that the number of patent application that applicant proposed on May 20th, 2015 is " 201510256850.2 ", title For the divisional application of the Chinese invention patent application of " jib crane ", entire contents are incorporated among the application.
Technical field
The present invention relates to hoisting machinery more particularly to a kind of jib crane and its subsystem or components.
Background technique
Jib crane includes that lifting mechanism, jib lubbing mechanism, rotating mechanism etc. can by the interoperation of these mechanisms Make weight lifting and carrying in certain cylindrical space.The lifting mechanism of jib crane includes hoist engine, passes through folding and unfolding The steel cable on reel is around in lift by crane workpiece.There are certain deficiencies in existing boom type hoist engine design: for example, the volume of reel Cylinder, reel axle construction are complex, and installation is not convenient enough；For another example, the braking effect of brake is not ideal enough, up and down parking limit Position device is easy failure, it is possible to cause safety accident；For another example, steel cable winding method is not reasonable, occurs steel cable release sometimes Or the problem of being intertwined, thereby increase security risk；In addition, hoist engine speed cannot be conveniently adjusted；Etc..There is mirror In above-mentioned all various deficiencies, it is necessary to be improved crane and its hoist engine.
Summary of the invention
In view of the defects existing in the prior art, the purpose of the embodiment of the present invention, which is to improve jib crane complete machine, divide, is System or component, to promote the performance of product.
In order to solve the above technical problems, the embodiment of the present invention provides a kind of jib crane, including chassis, turntable, elevator Machine, landing oil cylinder, cantilever crane, suspension hook, turntable are installed on chassis, and hoist engine is installed on turntable, and the head end of cantilever crane is articulated with turntable, hangs Hook hangs on the tail end of cantilever crane, and one end of landing oil cylinder is articulated with turntable, and the other end of landing oil cylinder is articulated with cantilever crane, hoist engine Be provided with driving device, winding device, brake apparatus and control device: driving device is provided with motor, shaft coupling and speed reducer, Speed reducer is installed on upper rack, and the high speed shaft of speed reducer passes through the power output axis connection of shaft coupling and motor；Winding device Drum support be installed on upper rack, one end of reel is rotationally connected with drum support, and the other end of reel is logical Drum connection structure transmission connection is crossed in the slow-speed shaft of speed reducer, the top sheave group of winding device is positioned at rack, steel cable winding In reel, top sheave group and lower sheave group, wherein the first conductor rope of steel cable self reel position is counterclockwise laid out, successively counterclockwise Around the first lower sheave, the first top sheave, the second lower sheave, the second top sheave, then successively clockwise around third lower sheave, the After three top sheaves, the 4th lower sheave, then clockwise about the second conductor rope of rewinding cylinder position, and the first end of steel cable is around in the of reel The first pressure rope position is simultaneously fixed in one end, and the second end of steel cable is around in the second end of reel and is fixed on the pressure rope of reel second position It sets；The brake of brake apparatus is installed on the high speed shaft of speed reducer, makes reductor braking by holding braked wheel tightly；Control Device setting frequency converter comes to electric machine speed regulation, and motor control loop is connected contact between motor protective circuit breaker and frequency converter Device, upper bottom limit switch are connected in series to the control loop of contactor；Upper bottom limit switch is using lifting limiter, lifting limit Device includes U-bracket, rocking bar, screw rod, runner, limiter shell, guide rod, push plate, active conductive column, limit switch and fixation Conductive column: U-bracket is fixed on the outer cover plate with reel axis connection, and limiter shell is anchored on U-bracket, screw rod by screw It is supported on limiter shell, push plate is installed on screw rod, and active conductive column one end is connected to push plate, the active conductive column other end It is supported on an arm of the limit switch being connected with limiter shell, fixed conductive column is fixed on another arm of limit switch On, runner is installed on the end of screw rod, and one end of rocking bar prejudicially connects runner, the other end and the spool shaft gusset piece phase of rocking bar Even.
Compared with prior art, the embodiment of the present invention improves jib crane, it is possible thereby to improve product Can, show in the following areas: optimization lifting drum body, spool shaft and its roll support, coupling structure, reel are laid out more Rationally, structure is more compact, installs also more convenient；Spool body structure and steel cable canoe and pressure rope structure are improved, it can be with It preferably avoids the problem that steel cable is unclamped or is intertwined, is conducive to eliminate safe hidden trouble；Improve brake, lifting limiter And motor stopping control mechanism, it can stop in time according to predetermined intention when limiting, stopping in emergency, braking, thus It is effectively reduced safety accident；It, can aspect ground control lifting velocity using frequency converter to hoist engine electric machine speed regulation.
Detailed description of the invention
Fig. 1 is the schematic diagram of jib crane of the present invention；
Fig. 2 is the main view of hoist engine of the present invention；
Fig. 3 is the top view of hoist engine of the present invention；
Fig. 4 is the right view of hoist engine of the present invention；
Fig. 5 is the schematic diagram of brake of the present invention；
Fig. 6 is steel cable winding arrangement 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 main 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 spool shaft of the present invention；
Figure 11 is drum connection structure schematic diagram of the present invention；
Figure 12 is present invention pressure rope structure schematic diagram；
Figure 13 is drum support schematic diagram of the present invention；
Figure 14 is the schematic diagram of present invention lifting limiter；
Figure 15 is the schematic diagram of internal structure of present invention lifting limiter；
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 diagram 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 circuit diagram of inverter of the present invention.
Specific embodiment
The technical principle and the course of work of embodiment for a better understanding of the present invention, below in conjunction with attached drawing and specific implementation Example is next, and further the present invention will be described in detail.
Fig. 1-Figure 20 indicates the structure of hoist engine of the present invention, subsystem or component, identical label table therein It is shown as same parts.
Referring to Fig. 1, the structure of jib crane of the present invention is shown.The jib crane includes chassis S1, turntable S2, elevator The components such as machine S3, landing oil cylinder S4, cantilever crane S5, suspension hook S6, turntable S2 are loaded on chassis S1, and hoist engine S3 is loaded on turntable, cantilever crane S5 Head end be articulated with turntable S2, suspension hook S6 hangs on the tail end of cantilever crane S5, and one end of landing oil cylinder S4 is articulated with turntable S2, landing The other end of oil cylinder S4 is articulated with cantilever crane S5.Turntable S2 is rotated so that cantilever crane S5 rotates, and oil cylinder S4 is flexible so that cantilever crane S5 landing, Speed change oil cylinder (not shown go out) makes cantilever crane S5 luffing, and hoist engine S3 folding and unfolding is around in reel, cantilever crane pulley blocks and lifting hook pulley group Steel cable lift by crane the workpiece on suspension hook S6.The present invention has carried out many places improvement for hoist engine S3 and its subsystem and component, It is further explained below.
Referring also to Fig. 2-Fig. 4 shows the complete machine structure of hoist engine of the present invention.The hoist engine includes driving device, winding Device, brake apparatus and control device (not shown go out): driving device by motor M01 (preferably variable-frequency motor), shaft coupling 7, The equal components of speed reducer 1 are constituted, and motor M01, shaft coupling 7, speed reducer 1 successively couple；Winding device by reel 2, top sheave group 3 and The components such as lower sheave group and steel cable are constituted, and for the transmission connection of reel 2 in speed reducer 1 so that reel 2 turns around, steel cable is wound in reel 2, folding and unfolding is carried out in top sheave group 3 and lower sheave group；Brake apparatus is made of brake 5 and attachment etc., and brake 5, which acts on, to be subtracted It is braked on the high speed shaft or slow-speed shaft of fast machine 1；Control device is provided with motor stopping control mechanism, motor stopping control Mechanism stops motor operation in preset upper limit or lower limit.
As shown in figs 2-4, the specific structure of the hoist engine is: speed reducer 1 and drum support 4 are installed on rack The top S01, one end of reel 2 are rotationally connected with drum support 4, and the other end of reel 2 is driven by drum connection structure 8 It is connected to the slow-speed shaft of speed reducer 1, the high speed shaft of speed reducer 1 passes through shaft coupling (outside is equipped with shaft coupling clamshell) 7 and motor M01 Power output axis connection；Top sheave group 3 is positioned at rack S01, steel cable with certain style canoe be wound in reel 2, on Pulley blocks 3 and lower sheave group, motor M01 forward or reverse when accordingly carry out folding and unfolding；Brake 5 is installed on speed reducer 1, system The braked wheel 6 on 1 high speed shaft of speed reducer can be held when dynamic tightly and braked.
In the hoist engine, spool body, spool shaft and its roll support, coupling structure are optimized, reel layout is more reasonable, Structure is more compact, installs also more convenient；Spool body structure and steel cable canoe and Ya Sheng mechanism rotate are improved, it can be more preferable Ground avoids the problem that steel cable is unclamped or is intertwined, and is conducive to eliminate safe hidden trouble；Improve brake, lifting limiter and Motor stopping control mechanism, can be according to the parking in time of predetermined intention, braking, to have when limiting, stopping in emergency Effect ground reduces safety accident.It is described further below.
Fig. 2-Fig. 4 shows brake mounting structure, which is installed on the high speed shaft of speed reducer 1, is made by holding tightly Driving wheel 6 and speed reducer 1 is braked, and so that the reel 2 on the slow-speed shaft of speed reducer 1 is braked.Further below to system The structure of dynamic device is described in detail.
Referring to Fig. 5, the structure of brake of the present invention is shown.In the brake 5, the first brake arm 52, the second brake arm 53, One end of driving telescopic rod (can be cylinder or oil cylinder) 59, driven telescopic rod 58 with driving device 50 is hingedly connected to Brake Block 51；First brake arm 52, driving telescopic rod 59, driven telescopic rod 58 the other end be hingedly connected to an arm of L shape connecting rod 57；The The other end of two brake arms 53 and linear connecting rod 55 are hinged, and another arm of the other end and L shape connecting rod 57 of linear connecting rod 55 is hinged； First brake block 56 is installed on the inside of the first brake arm 52, and the second brake block 54 is installed on the inside of the second brake arm 53, should The intrados of the intrados of first brake block 56 and the second brake block 54 holds the braked wheel on 1 high speed shaft of speed reducer tightly in braking 6.This mode of braking structure is simple, and braking response is fast, and effect is preferable.
Referring to Fig. 6, steel cable winding arrangement of the present invention is shown.In the steel cable winding arrangement, steel cable 10 is twined by following manner Be around in reel 2, top sheave (cantilever crane pulley) group 3 and lower sheave (lifting hook pulley) group 9: the first end of steel cable 10 is around in reel 2 First end is simultaneously fixed on the first pressure rope position 2a, and the 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, 10 self reel of steel cable, 2 first conductor rope position 2b is counterclockwise laid out, successively counterclockwise around the first lower sheave 91, the first top sheave 31, the second lower sheave 92, the second top sheave 32, then successively clockwise around in third lower sheave 93, third After pulley 33, the 4th lower sheave 94, then clockwise about 2 second conductor rope position 2c of rewinding cylinder.Steel cable 10 uses this canoe, It can reduce the probability of occurrence of the bad phenomenons such as steel cable winding, release.
Referring to Fig. 7, reel and drum connection structure of the present invention, pressure rope structure and drum support are shown.Reel 2 includes Spool body 21 and spool shaft 22, the first end of the spool shaft 22 are fixedly supported to the second end of spool body 21, and the of spool body 21 One end is coupled by drum connection structure (part I in Fig. 7) with the slow-speed shaft of speed reducer 1, the second end support of spool shaft 22 In drum support (part III in Fig. 7), install very convenient.In addition, the both ends top of spool body 21 is set respectively Pressure rope structure (part II in Fig. 7) is set, the end of steel cable 10 can be preferably fixed.
Referring also to Fig. 8-Fig. 9 shows the structure of reel of the present invention.First end plate 25, second end is arranged in the spool body 21 The first end plate 25 of plate 24 and support plate 23, spool body 21 is coupled by drum connection structure with the slow-speed shaft of speed reducer 1, reel Second end plate 24 of body 21 is installed on drum support, installs with the fixed support spool shaft 22 of support plate 23, the spool shaft 22 Get up very convenient.
As shown in Fig. 2-Fig. 9, which is arranged steel cable guide groove 211 above, convenient for steel cable 10 along steel cable guide groove 211 Thus introducing/extraction is conducive to steel cable 10 and winds in an orderly manner.
Referring to Figure 10, the structure of spool shaft of the present invention is shown.The spool shaft 22 includes reel shaft body 222, spool shaft master First shaft shoulder 221 is arranged in the first end of body 222, and second shaft shoulder 224 and the third shaft shoulder is arranged in the second end of reel shaft body 222 225, wherein reel shaft body 222, first shaft shoulder 221, second shaft shoulder 224 and the third shaft shoulder 225 outer diameter be sequentially reduced, and Tapered transitional 223 is set between reel shaft body 222 and second shaft shoulder 224, and this 22 structural strength of spool shaft is preferable, also side Just it installs.
Referring to Figure 11, drum connection structure of the present invention is shown.In the drum connection structure, couple semiaxis 84 by cylindrical roller Bearing 87 is supported in terminal pad 82, and baffle 86 is arranged in the medial end for coupling semiaxis 84, couples semiaxis 84, cylinder roller bearing 87 and the inside engaging portion of terminal pad 82 blocked with inner cover plate 85, connection semiaxis 84, cylinder roller bearing 87 and terminal pad 82 Outside engaging portion is blocked with outer cover plate 83, and terminal pad 82 and ring flange 81 are fixed, and ring flange 81 is anchored on the on spool body 21 End plate 25.This structure connection is reliable, easy for installation.
Referring to Figure 12, present invention pressure rope structure is shown.The pressure rope structure 11 includes steel cable pressing plate 111, under steel cable pressing plate Steel cable indent 1121 is arranged in surface, which is anchored in the screw hole of spool body 21 by bolt 112, so that steel cable 10 are reliably fixed on spool body 21 without deviating from, and thus increase safety coefficient.
Referring to Figure 13, drum support of the present invention is shown.In the drum support 4, machine is set in support base 41 Seat bearing block 43, reel bearing block 44 are supported in base bearing block 43, and spool shaft 22 is supported in volume by tapered roller bearing 45 Cylinder bearing block 44, base bearing block 43, inside engaging portion 42 envelope of inner cover plate of reel bearing block 44 and tapered roller bearing 45 It is stifled, base bearing block 43, the outside engaging portion closure of outer cover plate 47 of reel bearing block 44 and tapered roller bearing 45.This knot Structure is compact, and it is convenient to install.
As shown in figure 13, the present embodiment shows the mounting structure of lifting limiter.In Figure 12, reel is set in spool shaft 22 Axis gusset piece 46, to install the driving end (such as rocking bar of screw lifting limiter 12) of lifting limiter 12, at 2 turns of reel When dynamic angle is more than predetermined value (revolution), it can disconnect and be electrically connected to prevent reel from further rotating, it in this way can be to lifting Height is limited.Below in conjunction with Figure 12-Figure 14, to be further described.
Referring to Figure 14-Figure 15, present invention lifting limiter structure is shown.With reference to Figure 12, the lifting limiter 12 packet Include U-bracket 121, rocking bar 122, screw rod 123, runner 124, limiter shell 125, guide rod 126, push plate 127, active conductive Column 128, limit switch 129 and fixed conductive column 120:U shape bracket 121 are fixed on the outer cover plate 47 connecting with spool shaft 22, limit Position device shell 125 is anchored on U-bracket 121 by screw, and screw rod 123 is supported on limiter shell 125, and push plate 127 is installed In on screw rod 123,128 one end of active conductive column is connected to push plate 127, and 128 other end of active conductive column is supported in and limiter On one arm of the connected limit switch 129 of shell 125, fixed conductive column 120 is fixed on another arm of limit switch 129 On, runner 124 is installed on the end of screw rod 123, and one end of rocking bar 122 prejudicially connects runner 124, the other end of rocking bar 122 It is connected with spool shaft gusset piece 46.
In addition, also installing guide rod 126 on limiter shell 125, which is arranged in parallel with screw rod 123, push plate 127 are arranged in the sliding of guide rod 126, to guarantee smoothly to move.
In the embodiment, the position of push plate 127 can be pre-adjusted.When 2 scrolling of reel, rocking bar 122 is with spool shaft Gusset piece 46 rotates, and by runner 124 screw rod 123 is rotated, and the translation of push plate 127 drives active conductive column 128 to be detached from and fixes Conductive column 120 thereby turns off electrical connection and plays position-limiting action, thus improves security performance.
The structure of lifting limiter 12 is illustrated in Figure 14-Figure 15, which can be used to upper limit, It can be used for lower limit.Will go up and down limiter limit switch be connected to hoist engine motor M01 control loop, pass through triggering electricity Motor protective circuit breaker in machine control loop runs to stop motor M01, thus plays the role of safeguard protection.
The present invention, which is directed to, to be prevented, limits appearance limit situation, while being improved in terms of electric control system, is had Body is described as follows.
Referring also to Figure 16-Figure 17 shows the circuit structure of motor stopping control mechanism of the present invention.Motor stopping control Mechanism can be used for hoist engine, it can also be used to other types of lifting device, electrical structure are as follows: in the control loop of motor M01 In, a contactor KM01 is added between motor protective circuit breaker QF01 and frequency converter VF01；Upper bottom limit switch SQ01, SQ02 It is connected in series in the control loop of contactor KM01.Herein, the terminal 1-6 of motor protective circuit breaker QF01, contactor KM01's A1, A2 (three groups of terminals 1,2), 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 limit solution lock key knob SB01 is connected according to Figure 15 with Figure 16, and explanation is no longer specifically unfolded.
After limit switch SQ01 or SQ02 are triggered, the coil power of contactor KM01, contactor KM01 are directly cut off Thus the power supply in the circuit frequency converter VF01 is cut off in release, to quickly stop the operation of motor M01；Hereafter, pass through rotary stopper Solution lock key knob SB01 can be unlocked.This control mode reduces the intermediate link of processing limit signal, so that failure When generation, motor can stop at once, avoid the damage of equipment and the injures and deaths of personnel.
In order to facilitate the speed for changing hoist engine S3, the present invention is controlled using motor variable-frequency speed-regulating.It is described below.
Referring to Figure 18, the block diagram of motor speed regulation system of the present invention is shown.The motor speed regulation system includes successively coupling Power supply M03, frequency converter M02 and motor M01, frequency converter M02 use cross-straight-intersection mode, first industrial frequency AC are powered electric Source M03 is converted into DC power supply by rectifier, and it is controllable that DC power supply by inverter is then converted into frequency, voltage again The revolving speed of motor M01 can be changed by changing frequency in this way to supply motor M01 in the AC power source of system.
As shown in figure 18, the input stage of frequency converter M02 is provided with filtering decoupling circuit, it is preferably RC filtering decoupling electricity Road is made of the current-limiting resistance R and filter capacitor C concatenated, so that the output plus terminal of power supply M03 and output ground termination Enter the current-limiting resistance R and filter capacitor C of concatenation.Preposition analog low-pass of the filtering decoupling circuit as AC signal input channel Filter has jamproof effect concurrently；Decoupling capacitance is accessed between two terminals of alternating current-direct current signal input channel, can be high frequency differential mode Interference signal provides bypass.
Referring to Figure 19, the schematic block circuit diagram of frequency converter of the present invention is shown.The frequency converter M02 of the present embodiment includes rectified current It is road M021, power factor correction circuit M022, filter circuit M023, inverter circuit M024 and microprocessor circuit M025, man-machine The parts such as interface circuit M026, in which: rectification circuit M021 forms (preferably full-bridge rectification electricity by rectifier diode or bridge heap Road), including necessary interference filtering circuit, major function are that alternating current is converted to direct current；Circuit of power factor correction M022 is selectable unit (SU), is made of power semiconductor and control chip, it is also connected to the power factor (PF) of microprocessor circuit M025 End is corrected, effect is to make input current close to sine wave, reduces mains by harmonics content, realizes the purpose of increase power factor；Filter Wave circuit M023 (preferably RC filter circuit) is mainly made of elements such as electrolytic capacitors, complete direct current filtering and Energy storage effect；Inverter circuit M024 is made of power module and driving circuit, and power module can be intelligent power driving tube Chip, it is also connected to the driving signal end of the microprocessor circuit, and major function is to complete direct current to three-phase alternating current Conversion, realize frequency modulation and voltage modulation purpose；Microprocessor circuit M025 is made of microprocessor (DSP) and peripheral circuit, basis The order that man-machine interface circuit M026 is sent issues corresponding command signal, controls circuit of power factor correction M022 and inversion Circuit M024 work, and according to electronic feedback information, carry out necessary circuit protection and troubleshooting.In this way, the embodiment is logical The output mode for crossing microprocessor circuit control frequency converter M02, is conducive to neatly by pre-provisioning request output voltage, to meet The demand of different user.
Referring to fig. 20, the circuit diagram of inverter of the present invention is shown.It is particularly used for the inverter circuit M024 of motor M01 With the example of microprocessor circuit, working method are as follows: alternating current becomes direct current by rectification circuit M021, passes through electrolytic capacitor After filtering, the power input of inverter circuit M024 is accessed, accesses filter capacitor between power input.And microprocessor circuit Microprocessor according to the setting signal of man-machine interface circuit, motor M01 is controlled.
In the present embodiment, inverter circuit M024 includes power pipe driving chip, which is connected to micro process The microprocessor (MCU/DSP) of device circuit drives corresponding function so as to the pulse width modulating signal exported according to microprocessor Rate pipe alternate conduction and shutdown.Specifically, the inverter circuit M024 includes six power tube Q1~Q6, this six power tubes It is divided into three groups, a phase winding of every group power control three-phase motor M01.
The specific connection type of each power tube is: the source electrode of power tube Q1, Q2, Q3 connect one end of DC power supply jointly, The drain electrode of power tube Q4, Q5, Q6 meet the other end of DC power supply, the company of the source electrode of the drain electrode and power tube Q4 of power tube Q1 jointly Contact connects the U phase terminal of motor, and the tie point of the source electrode of the drain electrode and power tube Q5 of power tube Q2 connects the V phase terminal of motor, function The drain electrode of rate pipe Q3 and the source electrode tie point of power tube Q6 connect the W phase terminal of motor；The grid of power tube Q1, Q2, Q3, Q4, Q5, Q6 Pole connects an output end of power pipe driving chip respectively, and each input terminal of the power pipe driving chip is respectively by microprocessor Control all the way in output pulse width adjustment signal PWM1, PWM2, PWM3, PWM4, PWM5, PWM6 of circuit.Six function Corresponding access diode D1~D6 between the source electrode and drain electrode of rate pipe Q1~Q6.
When booting, microprocessor generates corresponding 6 road pulse width modulating signal according to the motor speed of setting, that is, drives Signal PWM1~PWM6；By power pipe driving chip drive inverter M024 6 power tubes (MOSFET or IGBT) Q1~ Q6；The alternate conduction and shutdown of these power tubes generate three-phase modulations waveform, and output voltage is adjustable, three intersections of changeable frequency Galvanic electricity, is output to U, V, W terminals of motor M01, to realize the stepless frequency control of motor M01.
Although the present invention is disclosed as above with preferred embodiment, it is not for limiting the present invention, any this field skill Art personnel without departing from the spirit and scope of the present invention, can make possible variation and modification, therefore guarantor of the invention Shield range should be subject to the range that the claims in the present invention are defined.

Claims (3)

1. a kind of jib crane, including chassis, turntable, hoist engine, landing oil cylinder, cantilever crane, suspension hook, turntable are installed on chassis, Hoist engine is installed on turntable, and the head end of cantilever crane is articulated with turntable, and suspension hook hangs on the tail end of cantilever crane, and one end of landing oil cylinder is hinged In turntable, the other end of landing oil cylinder is articulated with cantilever crane, and hoist engine is provided with driving device, winding device, brake apparatus and control Device processed: driving device is provided with motor, shaft coupling and speed reducer, and speed reducer is installed on upper rack, the high speed shaft of speed reducer Pass through the power output axis connection of shaft coupling and motor；The drum support of winding device is installed on upper rack, reel One end is rotationally connected with drum support, and the other end of reel is sequentially connected by drum connection structure in the low speed of speed reducer Axis, the top sheave group of winding device are positioned at rack, and steel cable is wound in reel, top sheave group and lower sheave group, wherein steel cable from The first conductor rope of reel position is counterclockwise laid out, and is successively glided counterclockwise around the first lower sheave, the first top sheave, second Wheel, the second top sheave, then successively clockwise around third lower sheave, third top sheave, after the 4th lower sheave, then wraparound clockwise The second conductor rope of reel position, and the first end of steel cable is around in the first end of reel and is fixed on the first pressure rope position, the of steel cable Two ends are around in the second end of reel and are fixed on the pressure rope of reel second position；The brake of brake apparatus is installed on the height of speed reducer On fast axis, make reductor braking by holding braked wheel tightly；Control device setting frequency converter comes to electric machine speed regulation, and motor control Circuit processed series contactor between motor protective circuit breaker and frequency converter, upper bottom limit switch are connected in series to the control of contactor Circuit；It is characterized in that, it is upper bottom limit switch using lifting limiter, lifting limiter include U-bracket, rocking bar, screw rod, Runner, limiter shell, push plate, active conductive column, limit switch and fixed conductive column: U-bracket is fixed on to be connected with spool shaft The outer cover plate connect, limiter shell are anchored on U-bracket by screw, and on limiter shell, push plate is installed on screw support On screw rod, active conductive column one end is connected to push plate, and the active conductive column other end is supported in the limit being connected with limiter shell On one arm of switch, fixed conductive column is fixed on another arm of limit switch, and runner is installed on the end of screw rod, rocking bar One end prejudicially connect runner, the other end of rocking bar is connected with spool shaft gusset piece.
2. jib crane as described in claim 1, which is characterized in that the control loop of contactor is provided with limit unlock rotation Button, limit unlocking knob are in parallel with upper the next limit switch.
3. jib crane as claimed in claim 1 or 2, which is characterized in that frequency converter passes through industrial frequency AC power supply Rectifier is converted into DC power supply, then DC power supply is converted into the controllable AC power source of frequency, voltage by inverter To supply motor, will pass through the revolving speed for changing frequency to change motor.
CN201610824858.9A 2015-05-20 2015-05-20 A kind of jib crane Active CN106395646B (en)

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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
CN201610825102.6A Pending CN106429924A (en) 2015-05-20 2015-05-20 Arm type crane for optimizing lifting limiter
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
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
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
CN201610826168.7A Active CN106395647B (en) 2015-05-20 2015-05-20 A kind of jib crane with new type inverter

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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

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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
CN201610825102.6A Pending CN106429924A (en) 2015-05-20 2015-05-20 Arm type crane for optimizing lifting limiter
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
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
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
CN201610826168.7A Active CN106395647B (en) 2015-05-20 2015-05-20 A kind of jib crane with new type inverter

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