CN104097894A - Automatic ascending and descending roller bed - Google Patents

Automatic ascending and descending roller bed Download PDF

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Publication number
CN104097894A
CN104097894A CN201410375410.4A CN201410375410A CN104097894A CN 104097894 A CN104097894 A CN 104097894A CN 201410375410 A CN201410375410 A CN 201410375410A CN 104097894 A CN104097894 A CN 104097894A
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China
Prior art keywords
roller bed
descending
ascending
guide
lifting
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CN201410375410.4A
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Chinese (zh)
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CN104097894B (en
Inventor
徐丽
刘会丙
戴荣杰
后世华
张世飞
叶朝国
刘泽军
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安徽瑞祥工业有限公司
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Publication of CN104097894A publication Critical patent/CN104097894A/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Abstract

The invention discloses an automatic ascending and descending roller bed. The automatic ascending and descending roller bed comprises an ascending and descending driving mechanism, an ascending and descending guiding mechanism and a horizontal conveying roller bed. The ascending and descending driving mechanism comprises a base, an ascending and descending driving variable frequency motor and a speed reducer, a gear rack transmission mechanism and an ascending and descending balance wheel mechanism. The ascending and descending guiding mechanism comprises guide wheels, guide rails, guide rail mounting seats and guide wheel mounting seats. A switch for detecting in-place ascending and descending of the roller bed is mounted on the base. The horizontal conveying roller bed comprises transmission rollers, a transmission roller mounting support, a conveying driving device and the like. The automatic ascending and descending roller bed is simple in structure, convenient to mount, stable in operation during ascending and descending and capable of realizing instant stopping at any position. Compared with a roller bed adopting synchronous belt type transmission, the automatic ascending and descending roller bed is high in bearing capability, high in precision, large in ascending and descending distances, safe to use, stable, durable and suitable for various processes of an assembly production line of automotive bodies in white.

Description

A kind of automatic lifting roller bed
Technical field
The present invention relates to a kind of automobile body-in-white welding line field, relate in particular to a kind of automatic lifting roller bed.
Background technology
In existing automobile body-in-white welding production line, the jacking of body in white and conveying have the conveying of multistation lifting simultaneously Riciprocating bar type, single station lifting to draw sled formula and carry.The former design, install and control complicatedly, the latter controls simply, flexibly, many employing the latter's modes in welding line.For the latter, structure also has various ways.Comprise that cylinder top-lifting driven roller bed, motor drive synchronous pulley and synchronous belt transmission type dance roller bed and motor drive link formula dance roller bed.These three kinds of structure liftings are not steady, and precision is low.Cylinder top-lifting driven roller bed lifting stop position is few, and rising or falling speed is slow, is subject to air pressure influence process unstable, and stop position impulsive force is large.Motor drives synchronous pulley and synchronous belt transmission type dance roller bed precision to be subject to the impact of adjustable height, and lifting position is higher, and precision is lower; Owing to using two Timing Belts, be difficult to ensure that the load of two Timing Belts is identical, therefore, in use procedure, easily there is a Timing Belt fracture, cause swing arm of roller bed to fall, roller bed tilts, and occurs safety misadventure.And Timing Belt very difficult installation and replacing in roller bed bottom, later maintenance cost is high.Motor drive link formula dance roller bed motor drive link formula dance roller bed is because connecting bridge hinge is more, and each hinge axis load is larger, easily occurs the phenomenon of disconnected hinge axis.And bindiny mechanism rocks larger, drive motor axle is caused to certain impact, potential safety hazard is larger.
Summary of the invention
For problems of the prior art, the object of the present invention is to provide one possess outward appearance succinct, compact, operate steadily, precision is high, convenient later maintenance, is applicable to the automatic lifting roller bed of the features such as various body in white welding lines.
In order to achieve the above object, the present invention is by the following technical solutions: a kind of automatic lifting roller bed, comprise lift drive mechanism, lifting guide mechanism, horizontal feed roller bed, described lift drive mechanism comprises pedestal, lifting drives variable-frequency motor and reductor, rack and pinion drive mechanism, balance mechanism, described variable-frequency motor afterbody is provided with absolute value rotary encoder, described rack and pinion drive mechanism comprises driving gear, tooth bar, driven gear and swing arm, described variable-frequency motor and reductor are arranged on pedestal one side, described variable-frequency motor and the output shaft of reductor are connected by key mode with driving gear, the driving gear that rotarily drives of described variable-frequency motor and reductor rotates, described driving gear rotarily drives the motion of tooth bar horizontal linearity, described tooth bar bottom is provided with three slide blocks, on described pedestal, be horizontally installed with slide rail, described slide block and the precision-fit of slide rail, described two, two of tooth bar motion of translation band action roller bed driven gear synchronously rotates, driven gear and swing arm are arranged on the axle of same driven gear simultaneously, the eccentric wheel of described swing arm is made up of needle bearing etc., rotate in 180 degree by swing arm, the lifting of band action roller bed Z direction.Described horizontal feed roller bed both sides are evenly distributed with four lifting guide mechanisms, guide wheel mounting means be its radially towards guide rail X or Y-direction, roll along fine limit work guide rail Z-direction.Described directions X refers to the length direction of roller bed, and described Y-direction refers to the Width of roller bed, and described Z direction refers to the short transverse of roller bed.
On described pedestal, be provided with that roller bed rises and the decline detector switch that puts in place, described driving gear is near being arranged on the reductor shaft shoulder, described tooth bar is divided into syllogic and installs: one section is engaged with driving gear, two sections, two ends tooth bar engages with driven gear in addition, described driving gear and driven tooth wheel and rack mate are all provided with anti-dust protecting device, described slide rail two ends are provided with the excess of stroke detecting switch of tooth bar motion of translation, described driving gear and driven tooth wheel and rack mate are all provided with anti-dust protecting device, described slide rail two ends are provided with the excess of stroke detecting switch of tooth bar motion of translation.
Described driven gear is coaxial with balance mechanism, described driven gear both sides all arrange two cast-steel chocks, described balance mechanism is arranged on bearing seat outside, described balance mechanism is connected by tensioning sleeve with the axle of driven gear, described balance mechanism end is provided with needle bearing, described lifting guide mechanism comprises activity-oriented wheel, fixed guide and guide rails assembling seat, described guide wheel mount pad is provided with pad adjustment, described pad ensures the rolling gap of guide wheel and guide rail, described activity-oriented wheel all adopts the locking of printing type spring washer, four groups of described fixed guides are vertically mounted on pedestal by locating dowel pin.
Described horizontal feed roller bed comprises transmission roller, live roll mounting bracket, feed drive device, described feed drive device comprises conveying variable-frequency motor, active synchronization belt wheel, driven synchronous pulley, Timing Belt, described conveying variable-frequency motor is arranged on horizontal feed roller bed bottom, described live roll attached bag is drawn together transmission shaft, drive pulley, transmission film winded roller, bearing, connecting panel, described drive pulley and transmission film winded roller are connected by key with transmission shaft, described transmission shaft two ends arrange and connect a bearing, described bearing is fixed on live roll mounting bracket together with connecting panel, described transmission roller mounting bracket is formed by light sheet bending.
Adopt after technique scheme, the present invention has following beneficial effect: (1) the present invention adopts rack-and-gear transmission, and lifting process is steady, precision is high, mechanism performance is stable, installation is simple, convenient later maintenance.(2) lifting guide mechanism of the present invention is easy for installation, bearing capacity is high, and friction force is little, flexible operation.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is rack-and-gear transmission lifting mechanism figure of the present invention;
Fig. 3 is conveying roller bed structure schematic diagram of the present invention;
Fig. 4 is lifting guide mechanism schematic diagram of the present invention;
Fig. 5 is parameter list of the present invention;
In figure: 1, lift drive mechanism; 2, lifting guide mechanism; 3, horizontal feed roller bed; 10, lifting drives variable-frequency motor and reductor; 11, driving gear; 12, tooth bar; 13, driven gear; 14, slide block slide rail; 15, balance mechanism; 16, pedestal; 20, carry variable-frequency motor; 21, active synchronization belt wheel; 22, driven synchronous pulley; 23, Timing Belt; 24, wear plate; 25, roller bedrest; 30, guide wheel; 31, guide rail; 32, guide rails assembling seat; 33, guide wheel mount pad.
Detailed description of the invention
According to Figure of description and specific embodiment, the present invention is further explained below.
As shown in Figure 1, a kind of automatic lifting roller bed, comprises lift drive mechanism 1, lifting guide mechanism 2, horizontal feed roller bed 3, and by lift drive mechanism 1, horizontal feed roller bed 3, under lifting guide mechanism 2 guidings, is realized lifting.
As shown in Figure 2,3, 4, described lift drive mechanism 1 comprises pedestal 16, lifting driving variable-frequency motor and reductor 10, rack and pinion drive mechanism, balance mechanism 15, described variable-frequency motor afterbody is provided with absolute value rotary encoder, it can accurate recording motor stop position and feeds back to PLC, and PLC can start, move, stop in automatic control motor optional position.Described rack and pinion drive mechanism comprises driving gear 11, tooth bar 12, driven gear 13 and swing arm, described variable-frequency motor and reductor are arranged on pedestal 16 1 sides, described variable-frequency motor and the output shaft of reductor are connected by key mode with driving gear 11, the driving gear 11 that rotarily drives of described variable-frequency motor and reductor rotates, described driving gear 11 rotarily drives tooth bar 12 horizontal linearity motions, described tooth bar 12 bottoms are provided with three slide blocks, on described pedestal 16, be horizontally installed with 4 meters of left and right long tracks, the precision-fit of described slide block slide rail 14, thereby ensure tooth bar 12 precision and the stationarity of motion of translation in the horizontal direction.Described tooth bar 12 two, two of motion of translation band action roller bed driven gears 13 synchronously rotate, driven gear 13 is arranged on the axle of same driven gear 13 with swing arm simultaneously, the eccentric wheel of described swing arm is made up of needle bearing etc., rotates the lifting of band action roller bed Z direction by swing arm in 180 degree.Described horizontal feed roller bed 3 both sides are evenly distributed with four lifting guide mechanisms 2, and guide wheel 30 mounting meanss are that it is radially towards guide rail 31X or Y-direction, along fine limit work guide rail 31Z to rolling.Described directions X refers to the length direction of roller bed, and described Y-direction refers to the Width of roller bed, and described Z direction refers to the short transverse of roller bed.In roller bed lifting process, ensure the stable of front and back and left and right directions, thus precision when guarantee roller bed lifting process optional position stops.
On described pedestal 16, be provided with that roller bed rises and the decline detector switch that puts in place, they feed back in time the lifting of PLC roller bed and put in place after signal, then PLC carries out next step instruction again.Described lifting type of drive is that rack-and-gear adds balance wheel type.Speed reducer output shaft is directly connected with driver pinion by key, meeting under speed reducer output shaft diametral load condition allowable, described driving gear 11 is near being arranged on the reductor shaft shoulder, in transmission distance range, in order to have reduced tooth bar 12 tooling costs and to have simplified the mounting means of tooth bar 12, described tooth bar 12 is divided into syllogic and installs: one section is engaged with driving gear 11, two sections, two ends tooth bar 12 engages with driven gear 13 in addition, according to the requirement of roller bed rising or falling speed, select 2:1 through calculating reduction ratio, described driving gear 11 and driven gear 13 are all provided with anti-dust protecting device with tooth bar 12 mates, described slide rail two ends are provided with excess of stroke detecting switch and the crashproof block of tooth bar 12 motion of translations, they provide dual security protection for transmission process.Described driving gear 11 and driven gear 13 are all provided with anti-dust protecting device with tooth bar 12 mates, and described slide rail two ends are provided with the excess of stroke detecting switch of tooth bar 12 motion of translations.
Described driven gear 13 is coaxial with balance mechanism 15, described driven gear 13 both sides are uniformly distributed vertically two cast-steel chocks are set, and it has very high support accuracy, thereby have ensured the rotating accuracy of swing arm, and there is very little friction moment, make swing arm revolution flexibly.Balance mechanism 15 is connected by tensioning sleeve with driven shaft, and balance mechanism 15 ends are provided with high-accuracy needle bearing, and single bearing radially dynamic load reaches 3.2 tons, adjusts four escapements at sustained height while being convenient to install.Swing arm and roller bench grafting contact are made up of assemblies such as heavily loaded needle bearings, in jacking process, due to the rotation of bearing, have greatly reduced and the friction of roller bed, have reduced noise.This kind of lifting type of drive operation carrying is large, and lifting distance is large, and precision is high, uses safety, stable, easy for installation.The overseas project of certain motor plant that my company accepts has adopted roller bed of the present invention: 1.7 tons of dance roller bed and relevant total weightes; Lifting distance 550mm; Lifting drives variable-frequency motor to adopt 3KW; Application result demonstration, lifting time is respectively 2.95 seconds.Meet parameter request.
Later maintenance does not need to arrange spare part, and disposable input is durable in use.Described balance mechanism 15 is arranged on bearing seat outside, described balance mechanism 15 is connected by tensioning sleeve with the axle of driven gear 13, described balance mechanism 15 ends are provided with needle bearing, described lifting guide mechanism 2 comprises activity-oriented wheel, fixed guide 31 and guide rails assembling seat 32, described guide wheel 30 mount pads are provided with pad adjustment, described pad ensures the rolling gap of guide wheel 30 and guide rail 31, described activity-oriented wheel all adopts the locking of printing type spring washer, four groups of described fixed guides 31 are vertically mounted on pedestal 16 by locating dowel pin.
The accurate needle bearing of lifting idler pulley 30 inner employing, precision and bearing capacity are high, and friction force is little, flexible operation.Four groups of lifting idler pulleys 30 are set and are evenly arranged on roller bed side, each guide wheel 30 mount pads all have pad adjustment, ensure the rolling gap of guide wheel 30 and guide rail 31; Each guide wheel 30 adopts the locking of printing type spring washer, ensures the reliability that guide wheel 30 rotates continuously.Guide rail 31 adopts 45# steel through bakingout process, ensures high hardness and resistance to abrasion, and four groups of corresponding guide rails 31 are vertically mounted on pedestal 16; Guide rail 31 ensures certain parallelism and squareness while installation, thereby ensures guide wheel 30 lifting smoothly.
As shown in Figure 3, described horizontal feed roller bed 3 comprises transmission roller, live roll mounting bracket, feed drive device, described feed drive device comprises carries variable-frequency motor 20, active synchronization belt wheel 21, driven synchronous pulley 22, Timing Belt 23, described conveying variable-frequency motor 20 is arranged on horizontal feed roller bed 3 bottoms, described live roll attached bag is drawn together transmission shaft, drive pulley, transmission film winded roller, bearing, connecting panel, described drive pulley and transmission film winded roller are connected by key with transmission shaft, have ensured the stability of Live roller.Film winded roller encapsulate hardness reaches 90-93, carries 1 ton.Roller bedrest 25 is mainly made up of 6mm plate bending part, is ensureing, under the prerequisite of rigidity, effectively to have alleviated the weight of roller bed.Carry variable-frequency motor 20 to adopt 1KW; 6 meters of fed distance; Time of delivery 7.8 seconds; Meet parameter request.
Described transmission shaft two ends arrange and connect a bearing, and described bearing is fixed on live roll mounting bracket together with connecting panel, and described transmission roller mounting bracket is formed by light sheet bending.Can effectively reduce roller bed weight, meet the requirement of energy-saving and emission-reduction.
As shown in Figure 4, lifting guide mechanism 2 comprises roller bed length and width; Two direction guide wheels 30, guide rail 31, guide rails assembling seat 32, guide wheel mount pad 33.Lifting guide mechanism 2 is evenly distributed on Si Ge position, roller bed all around.In this mechanism, guide wheel 30 is as movable component, and movable component is by the tolerance clearance of pad adjustment and guide rail 31.Guide rail 31 adopts 45# steel through bakingout process, has high hardness and resistance to abrasion, and processes and reach antirust effect by turning blue.Guide rail 31 is fixedly mounted on pedestal 16 by connecting pin as fixation kit, when installation, detects 4 guide rail 31 parallelism by specialized equipment.Roller bed is connected with guide wheel assembly, along precise guide rail 31 up-and-down movements, greatly ensures roller bed lifting process precision.
Described rack and pinion drive mechanism is high, simple in structure taking precision, stable drive, safe and reliable as target design.Described lifting guide mechanism 2 guide wheels 30 adopt accurate needle bearing, and precision and bearing capacity are high, and friction force is little, flexible operation.Emphasis of the present invention is considered this two aspects, can be widely used in various body in white welding processs.

Claims (5)

1. an automatic lifting roller bed, comprise lift drive mechanism, lifting guide mechanism, horizontal feed roller bed, it is characterized in that described lift drive mechanism comprises pedestal, lifting drives variable-frequency motor and reductor, rack and pinion drive mechanism, balance mechanism, described variable-frequency motor afterbody is provided with absolute value rotary encoder, described rack and pinion drive mechanism comprises driving gear, tooth bar, driven gear and swing arm, described variable-frequency motor and reductor are arranged on pedestal one side, described variable-frequency motor and the output shaft of reductor are connected by key mode with driving gear, the driving gear that rotarily drives of described variable-frequency motor and reductor rotates, described driving gear rotarily drives the motion of tooth bar horizontal linearity, described tooth bar bottom is provided with three slide blocks, on described pedestal, be horizontally installed with slide rail, described slide block and the precision-fit of slide rail, described two, two of tooth bar motion of translation band action roller bed driven gear synchronously rotates, driven gear and swing arm are arranged on the axle of same driven gear simultaneously, the eccentric wheel of described swing arm is made up of needle bearing etc., rotate in 180 degree by swing arm, the lifting of band action roller bed Z direction.
2. the horizontal feed roller bed both sides described in are evenly distributed with four lifting guide mechanisms, guide wheel mounting means is that it is radially towards guide rail X or Y-direction, roll along fine limit work guide rail Z-direction, described directions X refers to the length direction of roller bed, described Y-direction refers to the Width of roller bed, and described Z direction refers to the short transverse of roller bed.
3. a kind of automatic lifting roller bed according to claim 1, it is characterized in that being provided with on described pedestal roller bed rises and decline puts in place detector switch, described driving gear is near being arranged on the reductor shaft shoulder, described tooth bar is divided into syllogic and installs: one section is engaged with driving gear, two sections, two ends tooth bar engages with driven gear in addition, described driving gear and driven tooth wheel and rack mate are all provided with anti-dust protecting device, described slide rail two ends are provided with the excess of stroke detecting switch of tooth bar motion of translation, described driving gear and driven tooth wheel and rack mate are all provided with anti-dust protecting device, described slide rail two ends are provided with the excess of stroke detecting switch of tooth bar motion of translation.
4. a kind of automatic lifting roller bed according to claim 1 and 2, it is characterized in that described driven gear is coaxial with balance mechanism, described driven gear both sides all arrange two cast-steel chocks, described balance mechanism is arranged on bearing seat outside, described balance mechanism is connected by tensioning sleeve with the axle of driven gear, described balance mechanism end is provided with needle bearing, described lifting guide mechanism comprises activity-oriented wheel, fixed guide and guide rails assembling seat, described guide wheel mount pad is provided with pad adjustment, described pad ensures the rolling gap of guide wheel and guide rail, described activity-oriented wheel all adopts the locking of printing type spring washer, four groups of described fixed guides are vertically mounted on pedestal by locating dowel pin.
5. a kind of automatic lifting roller bed according to claim 3, it is characterized in that described horizontal feed roller bed comprises transmission roller, live roll mounting bracket, feed drive device, described feed drive device comprises conveying variable-frequency motor, active synchronization belt wheel, driven synchronous pulley, Timing Belt, described conveying variable-frequency motor is arranged on horizontal feed roller bed bottom, described live roll attached bag is drawn together transmission shaft, drive pulley, transmission film winded roller, bearing, connecting panel, described drive pulley and transmission film winded roller are connected by key with transmission shaft, described transmission shaft two ends arrange and connect a bearing, described bearing is fixed on live roll mounting bracket together with connecting panel, described transmission roller mounting bracket is formed by light sheet bending.
CN201410375410.4A 2014-08-01 2014-08-01 A kind of automatic lifting roller bed Active CN104097894B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104384268A (en) * 2014-11-17 2015-03-04 汝州郑铁三佳道岔有限公司 Jacking device for steel rail
CN104409997A (en) * 2014-11-26 2015-03-11 国网山东省电力公司泰安供电公司 Transformer substation power transformation and distribution room switch cabinet mounting system

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US6155402A (en) * 1998-05-14 2000-12-05 Valiant Machine & Tool Inc. Conveyor system
US6357705B1 (en) * 2000-04-21 2002-03-19 Ronny Hackett Adjustable roller stand
CN201952164U (en) * 2010-12-20 2011-08-31 大连四达高技术发展有限公司 Swing link type lifting roller bed
CN202379659U (en) * 2011-12-20 2012-08-15 安徽巨一自动化装备有限公司 High-speed roller bed lifting mechanism
CN202807633U (en) * 2012-06-06 2013-03-20 江苏天奇物流系统工程股份有限公司 Long-stroke lifting roller bed
CN203064633U (en) * 2013-02-21 2013-07-17 江苏冠宇机械设备制造有限公司 Liftable rolling press machine for automobile production line
CN103511572A (en) * 2013-05-23 2014-01-15 唐坤亮 Transmission
CN203728028U (en) * 2014-01-03 2014-07-23 上海哲成汽车装备工程有限公司 Automatic lifting roller bed system for automobile production line

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6155402A (en) * 1998-05-14 2000-12-05 Valiant Machine & Tool Inc. Conveyor system
US6357705B1 (en) * 2000-04-21 2002-03-19 Ronny Hackett Adjustable roller stand
CN201952164U (en) * 2010-12-20 2011-08-31 大连四达高技术发展有限公司 Swing link type lifting roller bed
CN202379659U (en) * 2011-12-20 2012-08-15 安徽巨一自动化装备有限公司 High-speed roller bed lifting mechanism
CN202807633U (en) * 2012-06-06 2013-03-20 江苏天奇物流系统工程股份有限公司 Long-stroke lifting roller bed
CN203064633U (en) * 2013-02-21 2013-07-17 江苏冠宇机械设备制造有限公司 Liftable rolling press machine for automobile production line
CN103511572A (en) * 2013-05-23 2014-01-15 唐坤亮 Transmission
CN203728028U (en) * 2014-01-03 2014-07-23 上海哲成汽车装备工程有限公司 Automatic lifting roller bed system for automobile production line

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104384268A (en) * 2014-11-17 2015-03-04 汝州郑铁三佳道岔有限公司 Jacking device for steel rail
CN104409997A (en) * 2014-11-26 2015-03-11 国网山东省电力公司泰安供电公司 Transformer substation power transformation and distribution room switch cabinet mounting system

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