CN2483369Y - Scissors like lifting mechanism driven by two or more asymmetric hydraulic cylinders - Google Patents
Scissors like lifting mechanism driven by two or more asymmetric hydraulic cylinders Download PDFInfo
- Publication number
- CN2483369Y CN2483369Y CN 01229071 CN01229071U CN2483369Y CN 2483369 Y CN2483369 Y CN 2483369Y CN 01229071 CN01229071 CN 01229071 CN 01229071 U CN01229071 U CN 01229071U CN 2483369 Y CN2483369 Y CN 2483369Y
- Authority
- CN
- China
- Prior art keywords
- oil cylinder
- arm
- triangle
- driven
- parallelogram
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
A scissors type lifting device drove by more than two asymmetric hydraulic cylinders in scissors lifting machinery comprises shear arms 2, a parallelogram cylinder-driven 4 and a triangular cylinder-driven 5 etc. The upper part of the shear arms 2 is provided with the triangular cylinder-driven 5, and the lower part is provided with the parallelogram cylinder-driven 4, the triangular cylinder-driven 5 can be an oblique triangle and can also be a direct triangle, lightening the whole weight of the shear arm structure makes the load bearing of single shear arm more uniform, meanwhile, the starting motion is more harmonious and orderly.
Description
The utility model relates to the configuration design of a kind of relevant later-model driving oil cylinder in the fork type elevator tool, specifically, is a kind of scissor-type jacking system that is driven by asymmetric hydraulic ram more than two.
At present, the arm configuration of cutting of lifting machinery is a single-degree-of-freedom system, structure drives and adopts hydraulic ram to stride layer driving usually, that generally uses at present has three kinds of hydraulic ram type of drive, be that parallelogram drives, unloading triangle drives, upright triangle drives, wherein, the oil cylinder span that parallelogram drives can reach three and cut the fork layer, the arm internal force of cutting in the driving oil cylinder span is made up of two parts, one is with lifting load and cuts the relevant internal force of arm weight, its two antagonistic force for the generation of oil cylinder hoisting force, and the latter is an eutralizing operation to the former, the resultant action of the two has reduced external load to cutting the effect internal force of arm.In order to increase cylinder force to cutting the eutralizing operation that beam load produces.In actual applications, in order to increase cylinder force to cutting the eutralizing operation that beam load produces, tend to increase the quantity of oil cylinder, it is the composite oil cylinder type of drive, be upper and lowerly to be that parallelogram drives, the upper and lower oblique triangle that is drives, upper and lowerly is upright triangle and drives, because it is little with respect to the external load of cutting arm than lower floor and being subjected to that arm is cut on the upper strata, adopt traditional symmetrical composite oil cylinder design cut arm the unloading phase often cause top to cut arm startup cut arm early than the bottom, thereby under full compound heavily loaded situation, causing the macrobending of cutting arm.
The purpose of this utility model be to provide can effectively alleviate the overall weight of cutting arm configuration and make each single cut arm carrying more become on average, move a kind of scissor-type jacking system that drives by asymmetric hydraulic ram more than two of harmonious orderly more simultaneously.
The utility model is achieved in that by lifting pedestal 1, cut arm 2, platform 3, parallelogram hydraulic oil cylinder driving 4, triangle hydraulic oil cylinder driving 5 forms, cut arm 2 between lifting pedestal 1 and the platform 3, triangle hydraulic oil cylinder driving 5 is arranged at the top of cutting arm 2, and parallelogram hydraulic oil cylinder driving 4 is arranged at the bottom.
The utility model also adopts following technical scheme:
Triangle hydraulic oil cylinder driving 5 can be oblique triangle, can also be straight triangle.
Cutting arm 2 can be more than one deck.
Advantage of the present utility model is: the asymmetric design of cutting the arm oil cylinder has been broken the pattern of composite oil cylinder driving in the past, the startup of avoiding cutting arm on the unloading phase top of cutting arm is cut arm early than the bottom, thereby actv. has solved the macrobending at full compound heavily loaded situation lower shear arm, alleviate the overall weight of cutting arm configuration and make each single cut arm carrying more become on average, move harmonious orderly more simultaneously.
Accompanying drawing is a structural representation of the present utility model.
Below in conjunction with accompanying drawing the utility model is further described:
By mechanical analysis as can be known, the activation force of oil cylinder only exerts an influence to the arm internal force of cutting relevant with oil cylinder span layer, and the arm internal force of cutting away from oil cylinder is not exerted an influence, only to cut the weight of arm relevant with cutting arm external load and this layer for the internal force that arm configuration is cut on the upper strata, and to promote the size of oil cylinder power of external load irrelevant with oil cylinder.
As shown in drawings, this device mainly includes lifting pedestal 1, cuts arm 2, platform 3, parallelogram hydraulic oil cylinder driving 4, triangle hydraulic oil cylinder driving 5, cut in the arm configuration at these 5 layers, the top oil cylinder adopts triangular structure, triangle hydraulic oil cylinder driving 5 is installed, and the bottom oil cylinder adopts parallelogram sturcutre, and parallelogram hydraulic oil cylinder driving 4 is installed.Triangle hydraulic oil cylinder driving 5 can be used oblique triangle, can also use straight triangle.Alleviate the overall weight of cutting arm configuration and make each single cut arm carrying more become on average, move harmonious orderly more simultaneously.
Claims (3)
1. scissor-type jacking system that drives by asymmetric hydraulic ram more than two, by lifting pedestal (1), cut arm (2), platform (3), parallelogram hydraulic oil cylinder driving (4), triangle hydraulic oil cylinder driving (5) and form, cut arm (2) between lifting pedestal (1) and the platform (3), it is characterized in that: triangle hydraulic oil cylinder driving (5) is arranged at the top of cutting arm (2), and parallelogram hydraulic oil cylinder driving (4) is arranged at the bottom.
2. according to a kind of scissor-type jacking system that is driven by asymmetric hydraulic ram more than two shown in the claim 1, it is characterized in that: triangle hydraulic oil cylinder driving (5) can be oblique triangle, can also be straight triangle.
3. according to a kind of scissor-type jacking system that is driven by asymmetric hydraulic ram more than two shown in the claim 1, it is characterized in that: cutting arm (2) can be more than one deck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01229071 CN2483369Y (en) | 2001-06-22 | 2001-06-22 | Scissors like lifting mechanism driven by two or more asymmetric hydraulic cylinders |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01229071 CN2483369Y (en) | 2001-06-22 | 2001-06-22 | Scissors like lifting mechanism driven by two or more asymmetric hydraulic cylinders |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2483369Y true CN2483369Y (en) | 2002-03-27 |
Family
ID=33644018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01229071 Expired - Fee Related CN2483369Y (en) | 2001-06-22 | 2001-06-22 | Scissors like lifting mechanism driven by two or more asymmetric hydraulic cylinders |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2483369Y (en) |
-
2001
- 2001-06-22 CN CN 01229071 patent/CN2483369Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |