CN102556892B - Electric shear type lifting platform - Google Patents
Electric shear type lifting platform Download PDFInfo
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- CN102556892B CN102556892B CN201210037463.6A CN201210037463A CN102556892B CN 102556892 B CN102556892 B CN 102556892B CN 201210037463 A CN201210037463 A CN 201210037463A CN 102556892 B CN102556892 B CN 102556892B
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Abstract
The invention discloses an electric shear type lifting platform, which comprises an upper movable bearing platform, a lower base, a mechanical lifting mechanism and a power driving mechanism, wherein the mechanical lifting mechanism is provided with a plurality of shear fork components, the power driving mechanism is a screw horizontal track feed actuating mechanism and comprises two screws which are parallel to each other and correspondingly arranged side by side, a driven end of each screw is in rotating connection with the position at the bottom end of one side of the bottom shear forks through a bearing, threaded sections of the screws are movably connected with a parallel moving block with internal threads matched with the threaded sections, the parallel moving block is fixedly connected with the bottom end of the other side of the bottom shear forks, folding and unfolding of the bottom shear forks can be realized by the aid of the parallel moving block and horizontal track feed along the screws, and further the upper movable bearing platform is supported to ascend and descend. The power driving mechanism is controlled by means of motor drive, so that folding and unfolding of the shear forks are realized, the upper movable bearing platform is kept parallel to the lower base, and further the lifting platform is stable in operation, low in manufacture cost and wide in application.
Description
Technical field
The present invention relates to a kind of scissor lift machinery, especially electric scissors type elevator tool.
Background technology
Mechanical elevating job platform is specially adapted to the place that exhibition center, library, hall, multi-functional exhibition room, arenas etc. require clean environment, and scissors type lifting platform is applied very extensive in productive life.Existing automatic shearing fork lift generally includes top movable carrying platform, lower base, mechanical elevating mechanism and power-driven mechanism, its mechanical elevating mechanism has multilayer and cuts fork assembly, each layer cut fork assembly and conventionally all rigid bar, consisted of, the superiors of its mechanical elevating mechanism cut the apical support top movable carrying platform of fork and are flexibly connected with top movable carrying platform, the orlop of its mechanical elevating mechanism is cut the bottom supporting base of fork and is flexibly connected with lower base, and power-driven mechanism makes each layer of mechanical elevating mechanism cut fork resultant motion.Traditional scissors type lifting platform adopts hydraulic driving mode mostly.Due to the characteristic of hydraulic efficiency pressure system, determined the defect of traditional scissor lift platform, as less stable, easy oil leakage, easily causes hydraulic oil pollution, and Design and manufacture is complicated, and power system is expensive etc.And traditional scissor-type lifting platform all has long-range sliding pair at the bottom and top cutting on fork, cause great friction, make lifting process sliding pair easy to wear, also affect the safety of bay-lift.So design a kind of stablizing, cleaning, simple, the Novel scissors fork lift of safety is necessary.
Summary of the invention
The object of the present invention is to provide a kind of electric shear type lifting platform, the advantage that has not only kept traditional bay-lift, also overcome the shortcoming of traditional bay-lift, make to cut fork stressed more even, make top movable carrying platform and lower base keeping parallelism, make operating elevating platform stable, power system Design and manufacture cost is low, is widely used.
To achieve the above object of the invention, the present invention adopts following technical proposals:
A kind of electric shear type lifting platform, comprise top movable carrying platform, lower base, mechanical elevating mechanism and power-driven mechanism, mechanical elevating mechanism has multilayer and cuts fork assembly, each layer cut fork assembly and all rigid bar, consisted of, the superiors of mechanical elevating mechanism cut the apical support top movable carrying platform of fork and are flexibly connected with top movable carrying platform, and the orlop of mechanical elevating mechanism is cut the bottom supporting base of fork and is flexibly connected with lower base, power-driven mechanism is installed on lower base top multilayer identical with two covers and the corresponding setting that is parallel to each other and cuts between fork assembly, power-driven mechanism is screw rod horizontal trajectory feeding actuating unit, it comprises two screw rods parallel to each other and that correspondence arranges side by side, the side bottom position that end cuts fork by bearing and orlop of being transmitted of screw rod relatively rotates and is connected, screw flight section is flexibly connected with the capable of parallel moving motion block with the negative thread that matches with it, relative being fixedly connected with in opposite side bottom that capable of parallel moving motion block is cut fork with orlop, by capable of parallel moving motion block and the horizontal trajectory feeding along screw rod, realize the folding that orlop is cut fork, and then support top movable carrying platform lifting, power-driven mechanism is controlled by electric motor drive, makes each layer of mechanical elevating mechanism cut fork resultant motion.
It is hinged by supporting hinges and pedestal and top movable carrying platform respectively that each end that fork and orlop cut fork is cut by the superiors of above-mentioned mechanical elevating mechanism, between each supporting hinges and pedestal and top movable carrying platform, be also respectively equipped with independently pair fulcrum balanced support mechanism, two fulcrum balanced support mechanism is four-bar linkage, comprise main support fork, the secondary fork that supports, connecting rod and frame bar, fork top and orlop are cut by the superiors of mechanical elevating mechanism, and to cut fork bottom directly hinged with corresponding connecting rod respectively, pedestal and top movable carrying platform are all as pair frame bar of fulcrum balanced support mechanism, main support fork is identical with secondary support oscillating bar length, being positioned at the different the superiors cuts fork top and space corresponding two two fulcrum balanced support mechanisms and forms one group of balanced support frame, between two connecting rods of every group of balanced support frame, by crosspiece, be fixedly connected with, between each crosspiece of two groups of balanced support framves, by folding rod, stretch stabilizing mechanism again hinged, thereby the fork of cutting of limit mechanical lifting mechanism is closed angle, being positioned at different orlops cuts at the bottom of fork bottom and the two fulcrum balanced support of corresponding two in space mechanisms form one group of balance and carries support, two connecting rods that wherein carry support at the bottom of one group of balance are all fixedly connected with the bearing seat that is transmitted end one side of screw rod, and two connecting rods that wherein carry support at the bottom of another group balance are all fixedly connected with capable of parallel moving motion block.
Improvement as technical solution of the present invention, above-mentioned folding rod stabilizing mechanism forms parallelogram connection-rod link gear by 2 cover folding rods and 1 coupling cross bar, the two ends end to end of every cover folding rod are hinged with 2 crosspieces respectively, the corresponding bar portion of two cover folding rods is arranged in parallel, and the middle parts bending hinges of two cover folding rods are connected by compound hinges with coupling cross bar two ends again.
The end that is transmitted of above-mentioned screw rod is connected with the spindle of electrical motor by gear drive, chain drive or tape handler.
Above-mentioned tape handler comprises belt wheel and two driving bands that three axially parallels arrange, wherein two belt wheels as follower are fixedly connected with screw coaxial, as another belt wheel of main driving wheel, be transmitted end and be directly connected with the spindle of electrical motor, driving wheel drives the belt train of flower wheel rotation formation synchrodrive by driving band.
The present invention compared with prior art, has following apparent outstanding substantive distinguishing features and remarkable advantage:
The keystone configuration of electric shear type lifting platform of the present invention by two cover masters cut fork form, simple in structure, in motion process, rub little, watt loss is few.
2. by eight cover auxiliary connecting rods, substituted the sliding pair of traditional bay-lift, realize with the alternative sliding pair of revolute pair and to reduce friction, strengthen the object of sport efficiency, make dipping and heaving more steady.
3. the power resources of electric shear type lifting platform of the present invention are electrical motors, thereby have omitted the design of hydraulic efficiency pressure system, have saved mechanism's manufacturing cost, have avoided the shortcoming of hydraulic efficiency pressure system self.
4. electric shear type lifting platform of the present invention has very strong practicality in life, not only can apply to general lifting process, also can be used for particular surroundings, as to the higher food processing industry of health conditions requiring with for the small lifting table of product introduction.
Accompanying drawing explanation
Fig. 1 is the electric shear type lifting platform structural representation of the embodiment of the present invention one.
Fig. 2 is the power-driven mechanism structural representation of the embodiment of the present invention one.
Fig. 3 is the folding rod stabilizing mechanism schematic diagram of the embodiment of the present invention two.
Fig. 4 is that the electric shear type lifting platform of the embodiment of the present invention two rises view.
Fig. 5 is top movable carrying platform electric shear type lifting platform view while being arranged in Fig. 4 A-A line absolute altitude place.
The specific embodiment
By reference to the accompanying drawings, to the preferred embodiments of the present invention, details are as follows:
embodiment mono-:
Referring to Fig. 1 and Fig. 2, a kind of electric shear type lifting platform, comprise top movable carrying platform 400, lower base 100, mechanical elevating mechanism 200 and power-driven mechanism 300, mechanical elevating mechanism 200 has multilayer and cuts fork assembly, each layer cut fork assembly and all rigid bar, consisted of, the superiors of mechanical elevating mechanism 200 cut the apical support top movable carrying platform 400 of fork and are flexibly connected with top movable carrying platform 400, and the orlop of mechanical elevating mechanism 200 is cut the bottom supporting base 100 of fork and is flexibly connected with lower base 100, power-driven mechanism 300 is installed on lower base 100 tops multilayer identical with two covers and the corresponding setting that is parallel to each other and cuts between fork assembly, power-driven mechanism 300 is screw rod horizontal trajectory feeding actuating unit, it comprises two screw rods 302 parallel to each other and that correspondence arranges side by side, the side bottom position that end cuts fork by bearing and orlop of being transmitted of screw rod 302 relatively rotates and is connected, the thread segment of screw rod 302 is flexibly connected with the capable of parallel moving motion block 305 with the negative thread that matches with it, relative being fixedly connected with in opposite side bottom that capable of parallel moving motion block 305 is cut fork with orlop, by capable of parallel moving motion block 305 and the horizontal trajectory feeding along screw rod 302, realize the folding that orlop is cut fork, and then support top movable carrying platform 400 liftings, power-driven mechanism 300 is controlled by electrical motor 301 transmissions, makes each layer of mechanical elevating mechanism 200 cut fork resultant motion.In the present embodiment, the power of electrical motor 301 drives respectively two screw rods 302 to rotate by transmission device, thereby drive capable of parallel moving motion block 305 along the axis traveling priority of screw rod 302, make each layer of mechanical elevating mechanism 200 cut fork resultant motion, realize the oscilaltion of bay-lift.Electrical motor 301 makes 302 rotations of a pair of screw rod by transmission device, thereby screw rod 302 rotarily drives the lifting that the folding of cutting fork realizes bay-lift.The latching characteristics of screw rod 302 has guaranteed the safety of bay-lift.The power resources of electric shear type lifting platform of the present invention are electrical motors, thereby have omitted the design of hydraulic efficiency pressure system, have saved mechanism's manufacturing cost, have avoided the shortcoming of hydraulic efficiency pressure system self.Adopt motor to drive more clean, practicality is stronger, not only can apply to general lifting process, also can be used for particular surroundings, as to the higher food processing industry of health conditions requiring with for the small lifting table of product introduction, be also applicable to the place that exhibition center, library, hall, multi-functional exhibition room, arenas etc. require clean environment.
In the present embodiment, it is hinged by supporting hinges and pedestal 100 and top movable carrying platform 400 respectively that each end that fork and orlop cut fork is cut by the superiors of above-mentioned mechanical elevating mechanism 200, between each supporting hinges and pedestal 100 and top movable carrying platform 400, be also respectively equipped with independently pair fulcrum balanced support mechanism, two fulcrum balanced support mechanism is four-bar linkage, comprise main support fork 202, the secondary fork 201 that supports, connecting rod 205 and frame bar, fork top and orlop are cut by the superiors of mechanical elevating mechanism 200, and to cut fork bottom directly hinged with corresponding connecting rod 205 respectively, pedestal 100 and top movable carrying platform 400 are all as pair frame bar of fulcrum balanced support mechanism, main support fork 202 is identical with secondary support fork 201 length, being positioned at the different the superiors cuts fork top and space corresponding two two fulcrum balanced support mechanisms and forms one group of balanced support frame, between two connecting rods 205 of every group of balanced support frame, by crosspiece 203, be fixedly connected with, between each crosspiece 203 of two groups of balanced support framves, by folding rod, stretch stabilizing mechanism again hinged, thereby the fork of cutting of limit mechanical lifting mechanism 200 is closed angle, being positioned at different orlops cuts at the bottom of fork bottom and the two fulcrum balanced support of corresponding two in space mechanisms form one group of balance and carries support, two connecting rods 205 that wherein carry support at the bottom of one group of balance are all fixedly connected with the bearing seat that is transmitted end one side of screw rod 302, and two connecting rods 205 that wherein carry support at the bottom of another group balance are all fixedly connected with capable of parallel moving motion block 305.In the present embodiment, referring to Fig. 1, different from traditional scissors-type lifting is to add pair fulcrum balanced support mechanism at the upper and lower fork place of cutting, and makes bay-lift when lifting, and pedestal 100 and top movable carrying platform 400 always keep level.Equalizing gear of the present invention replaces the two fulcrum balanced support mechanism of sliding pairs to form by eight pairs as seen from Figure 1, these pair of fulcrum balanced support mechanism guaranteed that top movable carrying platform 400 can be because of cutting that fork is subject to force unbalance and unstable, makes it keep the state parallel with pedestal 100 always.Compare with traditional elevator, the effect that the pair of two fulcrum balanced support mechanism supports fork 201 and connecting rod 205 is the long-range sliding pair that replaces conventional elevator, realizes with revolute pair, substituting sliding pair and to reduce friction, strengthening the object of sport efficiency.This mechanism makes complete machine in operational process, top movable carrying platform 400 four supporting point positions remain unchanged, stationarity strengthens, safer.
In the present embodiment, the end that is transmitted of above-mentioned screw rod 302 is connected with the spindle of electrical motor 301 by gear drive, chain drive or tape handler.Can adopt multiple positive drive and cushion drive mode to realize the mechanical drive to screw rod 302.
In the present embodiment, above-mentioned tape handler comprises belt wheel 303 and two driving bands 304 that three axially parallels arrange, wherein two belt wheels 303 as follower are coaxially fixedly connected with screw rod 302, as another belt wheel 303 of main driving wheel, be transmitted end and be directly connected with the spindle of electrical motor 301, driving wheel is by the belt train of driving band 304 drive flower wheels rotation formation synchrodrive.Screw actuator is comprised of with parallel movable block 305 electrical motor 301, two screw rods 302, three belt wheels 303, two driving bands 304, bearing seats as seen from Figure 2.In Fig. 2, the power of electrical motor 301 drives respectively two screw rod 302 transmissions by two synchronous belt 304 transmissions, screw rod 302 rotates impeller-hub bearing and the relative open and close movement of parallel movable block 305, thereby drive capable of parallel moving motion block 305 along the axis traveling priority of screw rod 302, bearing seat is connected in orlop with parallel movable block 305 and cuts fork bottom, thereby control orlop is cut fork and closed, and makes each layer of mechanical elevating mechanism 200 cut fork resultant motion, cut fork and close the lifting process that has just produced bench board.
embodiment bis-:
The technical scheme of the present embodiment and embodiment mono-is basic identical, and difference is:
Referring to Fig. 3～Fig. 5, in the present embodiment, folding rod stabilizing mechanism forms parallelogram connection-rod link gear by 2 cover folding rods 204 and 1 coupling cross bar 206, the two ends end to end of every cover folding rod 204 are hinged with 2 crosspieces 203 respectively, the corresponding bar portion of two cover folding rods 204 is arranged in parallel, and the middle parts bending hinges of two cover folding rods 204 are connected by compound hinges with coupling cross bar 206 two ends again.In the present embodiment, folding rod stabilizing mechanism not only can guarantee the horizontal equilibrium of bay-lift, also can limit the degree of freedom of cutting fork, makes bay-lift can not reach motion dead point and hinders proper motion.Two fulcrum balanced support mechanisms and folding rod stabilizing mechanism have also been brought into play the effect of coupling balance, top movable carrying platform 400 is horizontal, be unlikely to topple in lifting process, make top movable carrying platform 400 remain in the course of the work horizontal rise and fall, make top movable carrying platform 400 balanced supports need object or the staff of lifting.Fig. 4 and Fig. 5 are the operating mode schematic diagram of electric shear type lifting platform of the present invention, have the lifting mechanism of larger lift height and weight for cutting fork.It cuts fork with two masters, some pairs of fulcrum balanced support mechanism formations.Screw rod 302 is driven and is cut fork rotation folding by belt wheel 303.In Fig. 4, the shown position that multilayer is cut fork assembly is rise state; In Fig. 5, it is decline state that multilayer is cut fork assembly shown position, and it is equivalent to the operating mode of the electric shear type lifting platform when top movable carrying platform is arranged in Fig. 4 A-A line absolute altitude place.
By reference to the accompanying drawings the embodiment of the present invention is illustrated above; but the invention is not restricted to above-described embodiment; can also make multiple variation according to the object of innovation and creation of the present invention; the change of making under all Spirit Essences according to technical solution of the present invention and principle, modification, substitute, combination, simplify; all should be equivalent substitute mode; as long as goal of the invention according to the invention; only otherwise deviate from know-why and the inventive concept of electric shear type lifting platform of the present invention, all belong to protection scope of the present invention.
Claims (1)
1. an electric shear type lifting platform, comprise top movable carrying platform (400), lower base (100), mechanical elevating mechanism (200) and power-driven mechanism (300), described mechanical elevating mechanism (200) has multilayer and cuts fork assembly, described in each layer, cutting fork assembly is all comprised of rigid bar, the superiors of described mechanical elevating mechanism (200) cut described in the apical support of fork top movable carrying platform (400) and are flexibly connected with described top movable carrying platform (400), the orlop of described mechanical elevating mechanism (200) is cut the bottom of fork and is supported described pedestal (100) and be flexibly connected with described lower base (100), it is characterized in that: described power-driven mechanism (300) is installed on described lower base (100) top multilayer identical with two covers and the corresponding setting that is parallel to each other and cuts between fork assembly, described power-driven mechanism (300) is screw rod horizontal trajectory feeding actuating unit, it comprises two screw rods (302) parallel to each other and that correspondence arranges side by side, the side bottom position that end cuts fork by bearing and described orlop of being transmitted of described screw rod (302) relatively rotates and is connected, the thread segment of described screw rod (302) is flexibly connected with the capable of parallel moving motion block (305) with the negative thread that matches with it, relative being fixedly connected with in opposite side bottom that described capable of parallel moving motion block (305) is cut fork with described orlop, by described capable of parallel moving motion block (305) and the horizontal trajectory feeding along described screw rod (302), realize the folding that described orlop is cut fork, and then support top movable carrying platform (400) lifting, described power-driven mechanism (300) is controlled by electrical motor (301) transmission, makes each layer of described mechanical elevating mechanism (200) cut fork resultant motion,
It is hinged by supporting hinges and described pedestal (100) and top movable carrying platform (400) respectively that each end that fork and orlop cut fork is cut by the superiors of described mechanical elevating mechanism (200), described in each, between supporting hinges and described pedestal (100) and top movable carrying platform (400), be also respectively equipped with independently pair fulcrum balanced support mechanism, described pair of fulcrum balanced support mechanism is four-bar linkage, comprise main support fork (202), the secondary fork (201) that supports, connecting rod (205) and frame bar, fork top and orlop are cut by the superiors of described mechanical elevating mechanism (200), and to cut fork bottom directly hinged with corresponding connecting rod (205) respectively, described pedestal (100) and top movable carrying platform (400) are all as the frame bar of described pair of fulcrum balanced support mechanism, described main support fork (202) is identical with secondary support fork (201) length,
Being positioned at the different the superiors cuts fork top and space corresponding two two fulcrum balanced support mechanisms and forms one group of balanced support frame, between two connecting rods (205) of every group of balanced support frame, by crosspiece (203), be fixedly connected with, hinged by folding rod stabilizing mechanism again between crosspiece described in each of two groups of balanced support framves (203), described folding rod stabilizing mechanism forms parallelogram connection-rod link gear by 2 cover folding rods (204) and 1 coupling cross bar (206), the two ends end to end of the described folding rod of every cover (204) are hinged with 2 described crosspieces (203) respectively, the corresponding bar portion of the two described folding rods of cover (204) is arranged in parallel, the middle part bending hinges of the two described folding rods of cover (204) is connected by compound hinges with described coupling cross bar (206) two ends again, thereby the fork of cutting that limits described mechanical elevating mechanism (200) is closed angle,
Being positioned at different orlops cuts at the bottom of fork bottom and the two fulcrum balanced support of corresponding two in space mechanisms form one group of balance and carries support, two connecting rods (205) that wherein carry support at the bottom of one group of balance are all fixedly connected with the bearing seat that is transmitted end one side of described screw rod (302), and two connecting rods (205) that wherein carry support at the bottom of another group balance are all fixedly connected with described capable of parallel moving motion block (305).
2. electric shear type lifting platform according to claim 1, is characterized in that: the end that is transmitted of described screw rod (302) is connected with the spindle of described electrical motor (301) by gear drive, chain drive or tape handler.
3. electric shear type lifting platform according to claim 2, it is characterized in that: described tape handler comprises belt wheel (303) and two driving bands (304) that three axially parallels arrange, wherein two the described belt wheels (303) as flower wheel are coaxially fixedly connected with described screw rod (302), as belt wheel (303) described in another of driving wheel, be transmitted end and be directly connected with the spindle of described electrical motor (301), described driving wheel drives the belt train of described flower wheel rotation formation synchrodrive by described driving band (304).
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| CN201210037463.6A CN102556892B (en) | 2012-02-20 | 2012-02-20 | Electric shear type lifting platform |
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| CN201210037463.6A CN102556892B (en) | 2012-02-20 | 2012-02-20 | Electric shear type lifting platform |
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| CN102556892A CN102556892A (en) | 2012-07-11 |
| CN102556892B true CN102556892B (en) | 2014-04-09 |
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| CN201210037463.6A Expired - Fee Related CN102556892B (en) | 2012-02-20 | 2012-02-20 | Electric shear type lifting platform |
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| US20070138450A1 (en) * | 2005-12-15 | 2007-06-21 | Bradley Norma | Mobile lift table with raisable casters |
| CN201647922U (en) * | 2010-03-30 | 2010-11-24 | 国营红林机械厂 | Miniature lifting platform |
| CN201882857U (en) * | 2010-11-29 | 2011-06-29 | 倪既民 | Midpoint connection and combination type combined scissor retractable lifting mechanism |
-
2012
- 2012-02-20 CN CN201210037463.6A patent/CN102556892B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN102556892A (en) | 2012-07-11 |
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