CN102765677B - Electric lifting table with spring balanced design - Google Patents
Electric lifting table with spring balanced design Download PDFInfo
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- CN102765677B CN102765677B CN201210224144.6A CN201210224144A CN102765677B CN 102765677 B CN102765677 B CN 102765677B CN 201210224144 A CN201210224144 A CN 201210224144A CN 102765677 B CN102765677 B CN 102765677B
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Abstract
The invention relates to an electric lifting table with a spring balanced design. The electric lifting table comprises a base, an upper tabletop, scissor mechanisms, a lead screw transmission mechanism and an assorted electronic control system, and the lead screw transmission mechanism is arranged between the two scissor mechanisms and comprises a motor, a gearbox, a middle box, a push box, a lead screw, a stroke guide rod and a brake hydraulic cylinder. The electric lifting table is characterized in that a compressed balance spring is arranged on the stroke guide rod. A lead screw transmission mechanism of an existing electric lifting table is reasonably modified, counterweight balance is realized by the compressed balance spring arranged on the stroke guide rod, the balance spring assists the motor to lift up a heavy object when the lifting table ascends, and gravitational potential energy is converted into elastic potential energy to be stored by the balance spring when the lifting table descends, so that purposes of reducing power of the motor and improving integral efficiency are realized.
Description
Technical field
The present invention relates to a kind of improvement of electric lifting platform, specifically a kind of electric lifting platform with spring balancing design.
Background technology
In car assembling travel line, often need to use jacking equipment, be used for lifting car body or slide plate carrier, realize workpiece in the switching of differing heights.Electric lifting platform (also have and be called electric scissor bay-lift, Cam-type electric bay-lift) is a kind of conventional jacking equipment.Electric lifting platform adopts lead screw transmission mechanism conventionally, and the motor in lead screw transmission mechanism drives screw mandrel, by leading screw, drives nut seat transmission, realizes lifting and the decline of weight by extruding epirelief wheel plate and lower lobe plate.But in actual use, usually occur great start-up current during lifting weight, and when decline state, motor is again in generating state, the frequency converter end connecting at motor needs supporting high-power braking resistor.The whole decorum has been wasted the energy greatly, and bay-lift system need to be equipped with heavy-duty motor, big-power transducer, high-power braking resistor simultaneously, has seriously reduced whole system efficiency.And the Weighting system often adopting in general jacking system is again because the reasons in structure of bay-lift cannot realize.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, the lead screw transmission mechanism of existing electric lifting platform is carried out to rational modification, thereby provide a kind of electric lifting platform with spring balancing design, it can rely on balance spring to realize counterweight balance, in bay-lift uphill process, and balance spring helper motor lifting weight, in bay-lift decline process, balance spring is converted into elastic potential energy gravitional force and stores, and realizes and reduces power of motor, improves the object of whole efficiency.
According to technical scheme provided by the invention: there is the electric lifting platform of spring balancing design, comprise base, upper table surface, scissors mechanism, lead screw transmission mechanism and supporting electric-control system; Scissors mechanism has two groups, and two groups of scissors mechanisms are symmetricly set on electric lifting platform both sides; Every group of scissors mechanism all cut yoke outward and formed by cutting yoke and one in one, inside cuts yoke and cuts yoke outward and utilize bearing pin to be hinged at middle part; Inside cut yoke lower end and base hinged, inside cut yoke upper end and be supported on upper table surface by support wheel, the hinged place of inside cutting yoke is installed with epirelief wheel plate with upper part; Cut yoke upper end and upper table surface outward hinged, cut yoke lower end outward and be supported on base by support wheel, the following position, hinged place of cutting yoke is outward installed with lower lobe plate; Described lead screw transmission mechanism is arranged between two groups of scissors mechanisms, lead screw transmission mechanism comprises motor, change speed gear box, raising middle flask, draws case, screw mandrel, stroke guide rod and braking liquid cylinder pressure, raising middle flask two ends are connected with the bearing pin in two groups of scissors mechanisms, motor is connected with change speed gear box and is arranged on raising middle flask, is coaxially connected with screw mandrel on the output shaft of change speed gear box; The described case that draws is arranged on raising middle flask the place ahead, draws case to parallel with raising middle flask, and described screw mandrel is forward through drawing case, the nut seat that forms screw thread transmission is installed drawing with screw mandrel on case; The described case two ends of drawing are provided with roller, and this roller is cut the epirelief wheel plate of yoke and cuts outward between the lower lobe plate of yoke interior; The both sides of described screw mandrel are provided with two stroke guide rods, and stroke guide rod one end is fixed on raising middle flask, and stroke guide rod is through drawing case and forming bearing fit with drawing case; Described braking liquid cylinder pressure is arranged on raising middle flask, and the piston rod of braking liquid cylinder pressure is connected to forward and draws on case; It is characterized in that: on described stroke guide rod, the balance spring that is compressive state is housed.
As a further improvement on the present invention, a rotating rear rotation seat is installed on described raising middle flask, described motor is connected with change speed gear box and is arranged on rear rotation seat; The described middle part of case of drawing is provided with a rotating front rotation seat, and described nut seat is arranged on front rotation seat.
The present invention compared with prior art, advantage is: the present invention carries out rational modification to the lead screw transmission mechanism of existing electric lifting platform, by the balance spring that is compressive state being equipped with on stroke guide rod, realize counterweight balance, in bay-lift uphill process, balance spring helper motor lifting weight, in bay-lift decline process, balance spring is converted into elastic potential energy gravitional force and stores, realize and reduce power of motor, improve the object of whole efficiency.
Accompanying drawing explanation
Fig. 1 is the structural front view of electric lifting platform of the present invention.
Fig. 2 is that A-A in Fig. 1 is to cutaway view.
Fig. 3 is the left view of Fig. 1.
Fig. 4 is the lead screw transmission mechanism normal working schematic diagram in electric lifting platform.
Fig. 5 is the view while bearing non-axial force of the lead screw transmission mechanism in electric lifting platform.
Description of reference numerals: 1-base, 2-inside cut yoke, 3-motor, 4-change speed gear box, 5-cut outward yoke, 6-upper table surface, 7-bearing pin, 8-epirelief wheel plate, 9-lower lobe plate, 10-braking liquid cylinder pressure, 11-raising middle flask, 12-stroke guide rod, 13-draw case, 14-balance spring, 15-screw mandrel, 16-nut seat, 17-front rotation seat, 18-roller, 19-rear rotation seat.
The specific embodiment
Below in conjunction with concrete drawings and Examples, the invention will be further described.
As shown in Fig. 1 ~ Fig. 3, electric lifting platform of the present invention is mainly comprised of base 1, upper table surface 6, scissors mechanism, lead screw transmission mechanism and supporting electric-control system; Described scissors mechanism has two groups, and two groups of scissors mechanisms are symmetricly set on electric lifting platform both sides; Every group of scissors mechanism all cut yoke 5 outward and formed by cutting yoke 2 and one in one, inside cuts yoke 2 and cuts yoke 5 outward and at middle part, utilize bearing pin 7 to be hinged; Inside cut yoke 2 lower ends and base 1 hinged, inside cut yoke 2 upper ends and be supported on upper table surface 6 by support wheel, the hinged place of inside cutting yoke 2 is installed with epirelief wheel plate 8 with upper part; Cut yoke 5 upper ends and upper table surface 6 outward hinged, cut yoke 5 lower ends outward and be supported on base 1 by support wheel, the following position, hinged place of cutting yoke 5 is outward installed with lower lobe plate 9; Described lead screw transmission mechanism is arranged between two groups of scissors mechanisms, lead screw transmission mechanism mainly by motor 3, change speed gear box 4, raising middle flask 11, draw case 13, screw mandrel 15, stroke guide rod 12 and braking liquid cylinder pressure 10 to form, raising middle flask 11 two ends are connected with the bearing pin 7 in two groups of scissors mechanisms, a rotating rear rotation seat 19 is installed on described raising middle flask 11, described motor 3 is connected with change speed gear box 4 and is arranged on rear rotation seat 19, is coaxially connected with screw mandrel 15 on the output shaft of change speed gear box 4; The described case 13 that draws is arranged on raising middle flask 11 the place aheads, draw case 13 to parallel with raising middle flask 11, the described middle part of case 13 of drawing is provided with a rotating front rotation seat 17, and the nut seat 16 that forms screw thread transmission with screw mandrel 15 is installed on front rotation seat 17, and described screw mandrel 15 is forward through nut seat 16.Described case 13 two ends of drawing are provided with roller 18, and this roller 18 is cut the epirelief wheel plate 8 of yoke 2 and cuts outward between the lower lobe plate 9 of yoke 5 interior; The both sides of described screw mandrel 15 are provided with two stroke guide rods 12, stroke guide rod 12 one end are fixed on raising middle flask 11, stroke guide rod 12, through drawing case 13 and forming bearing fit with drawing case 13, is equipped with the balance spring 14 that is compressive state on stroke guide rod 12, balance spring 14 keeps by nut; Described braking liquid cylinder pressure 10 is arranged on raising middle flask 11, and the piston rod of braking liquid cylinder pressure 10 is connected to forward and draws on case 13; Described braking liquid cylinder pressure 10 is arranged on raising middle flask 11, and the piston rod of braking liquid cylinder pressure 10 is connected to forward and draws on case 13.
During specific works, motor 3 in lead screw transmission mechanism drives screw mandrel 15 to rotate by change speed gear box 4, screw mandrel 15 rotates the nut seat 16 that orders about on it along screw mandrel 15 axial motions, nut seat 16 drives and draws case 13 to be synchronized with the movement, draw epirelief wheel plate 8 and lower lobe plate 9 in the roller 18 compressing scissors mechanisms at case 13 two ends, the opening angle of scissors mechanism is changed; Draw case 13 under screw mandrel 15 effect during near raising middle flask 11, bay-lift rises, and draws case 13 under the effect of screw mandrel 15 during away from raising middle flask 11, and bay-lift declines.
In above-mentioned working process, the effect of described balance spring 14 is: the one, and in bay-lift uphill process, balance spring 14 helper motor 3 lifting weights; The 2nd, in bay-lift decline process, balance spring 14 saves as elastic potential energy gravitional force, realizes and reduces motor 3 power, improves the object of whole efficiency.Concrete course of action is as follows:
When bay-lift is during in low level, draw case 13 in the position away from raising middle flask 11, balance spring 14 is in compressive state.When bay-lift rises, draw case 13 to move toward raising middle flask 11 under lead screw transmission mechanism effect, drive bay-lift to rise, now balance spring 14 provides thrust for bay-lift.
When bay-lift is during in a high position, draw case 13 in the position near raising middle flask 11, balance spring 14 is in relaxation state.When bay-lift declines, draw case 13 to move away from raising middle flask 11 at bay-lift Action of Gravity Field, now braking force is provided jointly by motor 3 and balance spring 14.
In addition, the screw mandrel in the present invention also has antitorque protection design.Under normal condition, as shown in Figure 4, raising middle flask in transmission device 11 and draw case 13 to parallel, screw mandrel 15 is only subject to axial force.
But when there is error in manufacture assembling, screw mandrel 15 can be subject to non-axial force when operation, in system in the past, screw mandrel 15 is completely fixed with respect to raising middle flask 11, once it, be subject to non-axial force, screw mandrel 15 will produce slight bending shape, and the damage that can greatly accelerate screw mandrel 15 under this operating mode is even ruptured.In addition, bay-lift is generally furnished with dropproof checking system, when there is bay-lift fallen accident, braking liquid cylinder pressure 10 can be locked, because braking liquid cylinder pressure 10 is in screw mandrel 15 1 sides, once braking liquid cylinder pressure 10 is locked, raising middle flask 11 and draw the case 13 will be in non-parallel state (as shown in Figure 5), now screw mandrel 15 is subject to non-axial applied force.
Because the screw mandrel 15 in the present invention is mounted on front rotation seat 17 and rear rotation seat 19; under non-axial applied force; screw mandrel 15 can be followed front rotation seat 17 and 19 rotations of rear rotation seat; reach self adaptation; now non-axial force is born by two stroke guide rods 12 completely, and screw mandrel 15 is only subject to a pair of balancing force effect at front rotation seat 17 and rear rotation seat 19 places, is subject to axial pulling force merely; there will not be phenomenon of rupture, the antitorque protection design of Here it is screw mandrel 15.
Claims (1)
1. the electric lifting platform with spring balancing design, comprises base (1), upper table surface (6), scissors mechanism, lead screw transmission mechanism and supporting electric-control system; Scissors mechanism has two groups, and two groups of scissors mechanisms are symmetricly set on electric lifting platform both sides; Every group of scissors mechanism all cut yoke (5) outward and formed by cutting yoke (2) and one in one, inside cuts yoke (2) and cuts yoke (5) outward and at middle part, utilize bearing pin (7) to be hinged; Inside cut yoke (2) lower end and base (1) is hinged, inside cutting yoke (2) upper end, by support wheel, to be supported on upper table surface (6) upper, and the hinged place of inside cutting yoke (2) is installed with epirelief wheel plate (8) with upper part; Cut yoke (5) upper end outward and upper table surface (6) is hinged, cutting yoke (5) lower end outward, by support wheel, to be supported on base (1) upper, and the following position, hinged place of cutting yoke (5) is outward installed with lower lobe plate (9); Described lead screw transmission mechanism is arranged between two groups of scissors mechanisms, lead screw transmission mechanism comprises motor (3), change speed gear box (4), raising middle flask (11), draws case (13), screw mandrel (15), stroke guide rod (12) and braking liquid cylinder pressure (10), raising middle flask (11) two ends are connected with the bearing pin (7) in two groups of scissors mechanisms, motor (3) is connected with change speed gear box (4) and is arranged on raising middle flask (11) above, is coaxially connected with screw mandrel (15) on the output shaft of change speed gear box (4); The described case (13) that draws is arranged on raising middle flask (11) the place ahead, draws case (13) to parallel with raising middle flask (11), and described screw mandrel (15) is forward through drawing case (13), the nut seat (16) that forms screw thread transmission is installed drawing with screw mandrel (15) on case (13); Described case (13) two ends of drawing are provided with roller (18), and this roller (18) is positioned to be cut the epirelief wheel plate (8) of yoke (2) and cuts outward between the lower lobe plate (9) of yoke (5); The both sides of described screw mandrel (15) are provided with two stroke guide rods (12), and it is upper that stroke guide rod (12) one end is fixed on raising middle flask (11), and stroke guide rod (12) is through drawing case (13) and forming bearing fit with drawing case (13); It is upper that described braking liquid cylinder pressure (10) is arranged on raising middle flask (11), and the piston rod of braking liquid cylinder pressure (10) is connected to forward and draws on case (13); It is characterized in that: the balance spring (14) that is compressive state is housed on described stroke guide rod (12);
When bay-lift is during in low level, draw case (13) in the position away from raising middle flask (11), balance spring (14) is in compressive state; When bay-lift rises, draw case (13) mobile toward raising middle flask (11) under lead screw transmission mechanism effect, drive bay-lift to rise, now balance spring (14) provides thrust for bay-lift;
When bay-lift is during in a high position, draw case (13) in the position near raising middle flask (11), balance spring (14) is in relaxation state; When bay-lift declines, draw case (13) mobile away from raising middle flask (11) at bay-lift Action of Gravity Field, now braking force is provided jointly by motor (3) and balance spring (14);
A rotating rear rotation seat (19) is installed on described raising middle flask (11), and described motor (3) is connected with change speed gear box (4) and is arranged on rear rotation seat (19); The described middle part of case (13) of drawing is provided with a rotating front rotation seat (17), and described nut seat (16) is arranged on front rotation seat (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210224144.6A CN102765677B (en) | 2012-06-29 | 2012-06-29 | Electric lifting table with spring balanced design |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210224144.6A CN102765677B (en) | 2012-06-29 | 2012-06-29 | Electric lifting table with spring balanced design |
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| Publication Number | Publication Date |
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| CN102765677A CN102765677A (en) | 2012-11-07 |
| CN102765677B true CN102765677B (en) | 2014-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210224144.6A Active CN102765677B (en) | 2012-06-29 | 2012-06-29 | Electric lifting table with spring balanced design |
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| CN103101826A (en) * | 2012-11-12 | 2013-05-15 | 无锡市洪成造纸机械有限公司 | Motor swing-type drive lead screw structure |
| CN103848256A (en) * | 2012-11-30 | 2014-06-11 | 山东新北洋信息技术股份有限公司 | Bill pressing mechanism and storage box with same |
| CN104671144A (en) * | 2013-12-02 | 2015-06-03 | 湖北福田液压气动股份有限公司 | Motor-driven lifting platform installed on one side of standard rocker machine tool |
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| CN107352084A (en) * | 2017-07-27 | 2017-11-17 | 广东水利电力职业技术学院（广东省水利电力技工学校） | A kind of high-precision conveying mechanism and its synchronization conveying device |
| CN107458663B (en) * | 2017-07-27 | 2019-08-30 | 广东水利电力职业技术学院（广东省水利电力技工学校） | A kind of high-precision conveying mechanism |
| CN107398637A (en) * | 2017-08-01 | 2017-11-28 | 深圳市大族锐波传感科技有限公司 | A kind of coupling welding machine |
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| CN108046160B (en) * | 2018-01-11 | 2024-03-01 | 昆明旭邦机械有限公司 | Scissor fork type lifting device |
| CN108412179A (en) * | 2018-02-28 | 2018-08-17 | 北京港源建筑装饰工程有限公司 | A kind of folding elevating type scaffold |
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Patent Citations (6)
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| CA2542817A1 (en) * | 2005-12-27 | 2007-06-27 | Hanlon Engineering, Inc. | Screw scissor lift |
| CN201002951Y (en) * | 2006-11-16 | 2008-01-09 | 机械工业第四设计研究院 | Electric shear-fork type uniform speed lifting platform |
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| CN102765677A (en) | 2012-11-07 |
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Address after: 214187 Jiangsu Province, Wuxi city Huishan District Luoshe town Lotus Luo Road No. 288 Applicant after: Miracle Automation Engineering Co., Ltd. Address before: 214171, No. 288, Luo Lotus Road, Luo Zhen Town, Huishan District, Jiangsu, Wuxi Applicant before: Tianqi Material Flow System Engineering Co., Ltd., Jiangsu |
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Free format text: CORRECT: APPLICANT; FROM: TIANQI MATERIAL FLOW SYSTEM ENGINEERING CO. LTD., JIANGSU TO: MIRACLE AUTOMATION ENGINEERING CO., LTD. |
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