CN101670993B - Unbalanced-loading preventing inclinable hydraulic lifter - Google Patents
Unbalanced-loading preventing inclinable hydraulic lifter Download PDFInfo
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- CN101670993B CN101670993B CN2009101861666A CN200910186166A CN101670993B CN 101670993 B CN101670993 B CN 101670993B CN 2009101861666 A CN2009101861666 A CN 2009101861666A CN 200910186166 A CN200910186166 A CN 200910186166A CN 101670993 B CN101670993 B CN 101670993B
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- lifting mechanism
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Abstract
The invention relates to an unbalanced-loading preventing inclinable hydraulic lifter comprising a base, a lifting mechanism, an electrohydraulic controlling mechanism and a working platform. The lifting mechanism is provided with a multistage telescopic oil cylinder; the electrohydraulic controlling mechanism is used for supplying driving power to the lifting mechanism; the working platform is connected with the lifting mechanism; the lifting mechanism comprises an outer sleeve oil cylinder which is fixed on the base; the multistage telescopic oil cylinder is arranged in the outer sleeve oil cylinder; the multistage telescopic oil cylinder comprises a plurality of oil cylinder sleeves which are sleeved stage by stage; the oil cylinder which is arranged in the innermost is fixedly connected with the working platform; and each oil cylinder sleeve is connected with a ladder frame which is used for the operator to climb on and a weight balancing component which is used for applying the force, which is counterbalanced with the weight of the ladder frame, to each oil cylinder sleeve. The unbalanced load of the hydraulic lifter, which is resulted from the arrangement of the steps on one side of the multistage telescopic oil cylinder, can be avoided, and the hydraulic lifter can be folded and unfolded stably and reliably.
Description
Technical field
The invention belongs to industrial elevator field, particularly a kind of hydraulic hoist of tilting-type.
Background technology
Whether can topple over according to lifting mechanism, people are divided into industrial multicylinder hydraulic elevator inclinable hydraulic lifter and inclinable hydraulic lifter not usually.Chinese patent 200820036735.X discloses a kind of like this inclinable hydraulic lifter, it comprises base, multicylinder hydraulic lifting mechanism, be arranged on the workplatform at lifting mechanism top, the electrohydraulic control mechanism of propulsive effort is provided for this lifting mechanism, lifting mechanism comprises overcoat oil cylinder and telescopic oil cylinder, is connected with respectively on the telescopic oil cylinders at different levels at hydraulic hoist to be in the step that can be made for industry personnel climbing under the extended configuration.These steps need all can adopt metal material for satisfying certain intensity, therefore one-sided the problem that step will inevitably cause unbalance loading are set.
Usually for inclinable hydraulic lifter not, two groups of steps can be set in the bilateral symmetry of multi-stage expansion oil cylinder, because the weight of both sides step is balance just, therefore under the state of hydraulic hoist full extension, can keep the balance of telescopic oil cylinder, the at different levels of telescopic oil cylinder can both be launched smoothly.Yet the tilting-type elevator is subjected to the restriction of self structure, be merely able to be provided with one group of step, this will inevitably cause the generation unbalance loading of multi-stage expansion oil cylinder, the influence that telescopic oil cylinder below being positioned at is subjected to is less relatively, more upwards influence is big more, makes the gap between two adjacent cylinder sleeves of telescopic oil cylinder too small, this cause lifting mechanism hoist or the process that falls in, stuck phenomenon can take place in the internal layer cylinder sleeve, can't guarantee that perhaps the multi-stage expansion oil cylinder stretches out step by step or withdraws.
Summary of the invention
The inclinable hydraulic lifter that the purpose of this invention is to provide a kind of unbalanced-loading preventing.
For achieving the above object, the technical solution adopted in the present invention is: a kind of inclinable hydraulic lifter of unbalanced-loading preventing, comprise base, lifting mechanism with multi-stage expansion oil cylinder, the electrohydraulic control mechanism of propulsive effort is provided for this lifting mechanism, be connected the job platform at described lifting mechanism top, described lifting mechanism comprises the overcoat oil cylinder that is fixedly installed on the described base, described multi-stage expansion oil cylinder is arranged in the described overcoat oil cylinder, described multi-stage expansion oil cylinder comprises the cylinder sleeve of a plurality of sockets step by step, cylinder sleeve the most inboard in described a plurality of cylinder sleeve is captiveed joint with described job platform, being connected with respectively on described each cylinder sleeve can be for the ladder of operating personal climbing, also be connected with counterweight on described each cylinder sleeve respectively, described counterweight is used for described each cylinder sleeve is applied a power that balances each other with the gravity of described ladder.
Preferably, described counterweight comprises throw of lever and the weight that is fixed on the described cylinder sleeve, described ladder comprises that the fixed mount that is fixed on the described cylinder sleeve and upper end are fixed on the step on the described fixed mount, the quality of described weight is identical with the moment size that described ladder is applied on the described cylinder sleeve with the moment that the size of throw of lever makes described counterweight be applied on the described cylinder sleeve, and direction is identical.
Preferably, described weight and described step along the circumferential direction are evenly distributed in the outside of described each cylinder sleeve.
Preferably, described counterweight comprises throw of lever and a plurality of described weight, and described a plurality of weights and step five equilibrium are the circumference in the center of circle with the center of described cylinder sleeve.
Preferably, described counterweight comprises throw of lever and a described weight, and angle is 180 degree between described step and the weight.
Preferably, to be positioned at same center with described cylinder sleeve be the circumference in the center of circle for described weight and described step.
Preferably, the total weight of described counterweight is 1～1.1: 1 with the ratio of the weight of described ladder.
Owing to adopted above technical scheme, make the present invention have following advantage: the present invention is by being provided with counterweight on lifting mechanism, make the gravity of telescopic oil cylinder both sides reach balance, thereby prevent the internal layer cylinder sleeve generation unbalance loading of telescopic oil cylinder, can guarantee hydraulic hoist steadily, launch smoothly and regain, improve the service life of elevator.
Description of drawings
Accompanying drawing 1 is front view of the present invention (under the lifting mechanism heeling condition);
Accompanying drawing 2 is front view of the present invention (under the lifting mechanism erectility);
Accompanying drawing 3 is in front view under the deployed condition for the present invention;
Accompanying drawing 4 is the partial enlarged drawing of lifting mechanism of the present invention;
Accompanying drawing 5 be in the accompanying drawing 4 along A to view;
Wherein: 1, base; 2, lifting mechanism; 3, electrohydraulic control mechanism; 4, job platform; 5, overcoat oil cylinder; 6, cylinder sleeve; 7, step; 8, counterweight; 9, fixed mount; 10, compensating cylinder; 11, the anti-stay bearing plate that topples; 12, feet; 13, ladder; 14, throw of lever; 15, weight.
Specific embodiment
The present invention is described in detail below in conjunction with accompanying drawing.
A kind of inclinable hydraulic lifter of unbalanced-loading preventing, comprise base 1, have the multi-stage expansion oil cylinder lifting mechanism 2, for this lifting mechanism 2 provide propulsive effort electrohydraulic control mechanism 3, be connected the job platform 4 at lifting mechanism 2 tops.Lifting mechanism 2 comprises the overcoat oil cylinder 5 that is fixedly installed on the base 1, this multi-stage expansion oil cylinder is slidingly arranged in the overcoat oil cylinder 5, the multi-stage expansion oil cylinder comprises the cylinder sleeve 6 of a plurality of sockets step by step, the inner chamber of a plurality of cylinder sleeves 6 communicates and communicates with overcoat oil cylinder 5, and the radius with each cylinder sleeve 6 reduces, its cross-sectional area also reduces gradually, fluid is when electrohydraulic control mechanism 3 pressurizes and sends into the lower end of overcoat oil cylinder 5 like this, according to F=PS, therefore outermost cylinder sleeve 6 suffered hoisting force maximums stretch out earlier, and each cylinder sleeve from coarse to fine subsequently stretches out step by step, cylinder sleeve the most inboard in a plurality of cylinder sleeves 6 is captiveed joint with job platform 4, finally makes job platform 4 rise to predetermined altitude.
Being connected with respectively on each cylinder sleeve 6 can be for the ladder 13 of operating personal climbing, and ladder 13 comprises that the fixed mount 9 that is fixed on this cylinder sleeve 6 and upper end are fixed on the step 7 on the fixed mount, and the bottom of step 7 then connects on thereunder the cylinder sleeve 6 slidably.Except that ladder 13, also be connected with counterweight 8 on each cylinder sleeve 6 respectively, this counterweight 8 is used for each cylinder sleeve 6 is applied a power that balances each other with the gravity of ladder 13, promptly respectively in the both sides application of force of cylinder sleeve 6 line of centerss, and the moment of two power equates, just can avoid cylinder sleeve 6 unbalance loadings.
Further say, counterweight 6 comprises throw of lever 14 and the weight 15 that is fixed on the cylinder sleeve 6, the quality by weight 15 reasonably is set and the size of throw of lever 14, the moment that counterweight 8 is applied on the cylinder sleeve 6 is identical with the moment size that ladder 13 is applied on the cylinder sleeve 6, direction is identical, and just cylinder sleeve 6 reaches balance.
For keeping the balance of each cylinder sleeve, each weight 15 and step 7 along the circumferential direction are evenly distributed in the outside of each cylinder sleeve 6.As the preferred embodiments of the present invention, counterweight 8 comprises a weight 15 and throw of lever 14, and angle is 180 degree between step 7 and the weight 15, is beneficial to the balance that keeps the cylinder sleeve both sides so most; And weight 15 to be positioned at same center with cylinder sleeve 6 with step 7 be the circumference in the center of circle, that is to say that weight 15 equates with the arm of force of step 7, preferably, the total weight of counterweight 8 is 1～1.1: 1 with the ratio of the weight of ladder 13.
Among the present invention, weight 15 can also have multiple set-up mode with step 7, such as the arm of force of weight 15 can be provided with shorter, and the quality of weight 15 is bigger, can reduce the volume of lifting mechanism like this, also is beneficial to lifting mechanism more to tilt to place; Perhaps, counterweight 8 can also comprise a plurality of weights 15 and throw of lever 14, and to satisfy a plurality of weights 15 and step 7 five equilibriums be the circumference in the center of circle with the center of cylinder sleeve 6.
Claims (6)
1. the inclinable hydraulic lifter of a unbalanced-loading preventing, comprise base, lifting mechanism with multi-stage expansion oil cylinder, the electrohydraulic control mechanism of propulsive effort is provided for this lifting mechanism, be connected the job platform at described lifting mechanism top, described lifting mechanism comprises the overcoat oil cylinder that is fixedly installed on the described base, described multi-stage expansion oil cylinder is arranged in the described overcoat oil cylinder, described multi-stage expansion oil cylinder comprises the cylinder sleeve of a plurality of sockets step by step, cylinder sleeve the most inboard in described a plurality of cylinder sleeve is captiveed joint with described job platform, being connected with respectively on described each cylinder sleeve can be for the ladder of operating personal climbing, it is characterized in that: also be connected with counterweight on described each cylinder sleeve respectively, described counterweight is used for described each cylinder sleeve is applied a power that balances each other with the gravity of described ladder, described counterweight comprises throw of lever and the weight that is fixed on the described cylinder sleeve, described ladder comprises that the fixed mount that is fixed on the described cylinder sleeve and upper end are fixed on the step on the described fixed mount, the moment that the length of described weight of heavy and throw of lever makes described counterweight be applied on the described cylinder sleeve is identical with the moment size that described ladder is applied on the described cylinder sleeve, and direction is identical.
2. the inclinable hydraulic lifter of a kind of unbalanced-loading preventing according to claim 1, it is characterized in that: described weight and described step along the circumferential direction are evenly distributed in the outside of described each cylinder sleeve.
3. the inclinable hydraulic lifter of a kind of unbalanced-loading preventing according to claim 2, it is characterized in that: described counterweight comprises a plurality of described weights and throw of lever, and the center that a plurality of described weights and step equidistantly are distributed in described cylinder sleeve is on the circumference in the center of circle.
4. the inclinable hydraulic lifter of a kind of unbalanced-loading preventing according to claim 2, it is characterized in that: described counterweight comprises a described weight and throw of lever, and angle is 180 degree between described step and the weight.
5. the inclinable hydraulic lifter of a kind of unbalanced-loading preventing according to claim 4, it is characterized in that: it is the circumference in the center of circle that described weight and described step are positioned at same center with described cylinder sleeve.
6. the inclinable hydraulic lifter of a kind of unbalanced-loading preventing according to claim 5, it is characterized in that: the total weight of described counterweight is 1～1.1: 1 with the ratio of the weight of described ladder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101861666A CN101670993B (en) | 2009-09-30 | 2009-09-30 | Unbalanced-loading preventing inclinable hydraulic lifter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101861666A CN101670993B (en) | 2009-09-30 | 2009-09-30 | Unbalanced-loading preventing inclinable hydraulic lifter |
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| CN101670993A CN101670993A (en) | 2010-03-17 |
| CN101670993B true CN101670993B (en) | 2011-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009101861666A Active CN101670993B (en) | 2009-09-30 | 2009-09-30 | Unbalanced-loading preventing inclinable hydraulic lifter |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102491225A (en) * | 2011-12-26 | 2012-06-13 | 济南华北升降平台制造有限公司 | Aluminum alloy lift |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2763420A (en) * | 1953-12-24 | 1956-09-18 | H & H Truck Tank Co Inc | Collapsible ladder assemblies |
| JP2002338190A (en) * | 2001-05-17 | 2002-11-27 | Hitachi Building Systems Co Ltd | Device for high lift work for escalator |
| EP1571083A1 (en) * | 2004-03-02 | 2005-09-07 | Trepel Airport Equipment GmbH | Lifting device with a ladder and its use |
| CN101279702A (en) * | 2008-05-09 | 2008-10-08 | 太仓高德升降机有限公司 | Multicylinder synchronous hydraulic hoist |
| CN201250085Y (en) * | 2008-05-20 | 2009-06-03 | 太仓高德升降机有限公司 | Tilting-type hydraulic elevator |
| CN201512387U (en) * | 2009-09-30 | 2010-06-23 | 太仓高德升降机有限公司 | Unbalanced-loading-prevention tilting-type hydraulic lift |
-
2009
- 2009-09-30 CN CN2009101861666A patent/CN101670993B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2763420A (en) * | 1953-12-24 | 1956-09-18 | H & H Truck Tank Co Inc | Collapsible ladder assemblies |
| JP2002338190A (en) * | 2001-05-17 | 2002-11-27 | Hitachi Building Systems Co Ltd | Device for high lift work for escalator |
| EP1571083A1 (en) * | 2004-03-02 | 2005-09-07 | Trepel Airport Equipment GmbH | Lifting device with a ladder and its use |
| CN101279702A (en) * | 2008-05-09 | 2008-10-08 | 太仓高德升降机有限公司 | Multicylinder synchronous hydraulic hoist |
| CN201250085Y (en) * | 2008-05-20 | 2009-06-03 | 太仓高德升降机有限公司 | Tilting-type hydraulic elevator |
| CN201512387U (en) * | 2009-09-30 | 2010-06-23 | 太仓高德升降机有限公司 | Unbalanced-loading-prevention tilting-type hydraulic lift |
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| CN101670993A (en) | 2010-03-17 |
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