CN202864821U - Fork lifter - Google Patents
Fork lifter Download PDFInfo
- Publication number
- CN202864821U CN202864821U CN201220493226.6U CN201220493226U CN202864821U CN 202864821 U CN202864821 U CN 202864821U CN 201220493226 U CN201220493226 U CN 201220493226U CN 202864821 U CN202864821 U CN 202864821U
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- cylinder
- oil cylinder
- fork lifter
- stress
- inner support
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Abstract
The utility model discloses a fork lifter and belongs to lifting devices. The fork lifter structurally comprises an upper frame, a chassis, an inner support and an outer support, wherein the inner support and the outer support are arranged between the upper frame and the chassis and are in hinged connection. An upper oil cylinder and a lower oil cylinder are respectively arranged on the upper portion and the lower portion of the inner support, and an upper oil cylinder and a lower oil cylinder are respectively arranged on the upper portion and the lower portion of the outer support. The moving distance of the lower cylinders are same as the moving distance of the upper oil cylinder. The cylinder diameter of the lower oil cylinders is larger than the cylinder diameter of the upper oil cylinders. Compared with the prior art, the fork lifter has the advantages that stress of a strongest stress point in hinged connection points is improved greatly, stress of other strong stress points is reduced too in the same degree with that of the strongest stress point, material consumption is reduced, cost is saved, the range of oscillation is reduced obviously, fatigue break is avoided, usage hidden troubles are avoided, performance such as maximum lifting height and rated load is improved, and therefore the fork lifter has good popularization and application value.
Description
Technical field
The utility model relates to a kind of jacking system, especially a kind of fork type elevator.
Background technology
The maximum height of lift of the fork type elevator of producing now is 18 meters, and rated load is 300kg, and the cylinder diameter of two-layer oil cylinder is identical up and down, thrust is identical, causes cutting respectively cutting of fork structure and pitches the hinge-point unbalance stress, and the hinge-point that has is stressed larger, the several times of other hinge-point, when design, need to put selection and select size by maximum weighted, not only cost is high to cause product, and cut the fork structure swing easily, the amplitude of oscillation even surpass 30cm, even can fracture by fatigue, exist and use hidden danger.At present, good solution is not also arranged.
The utility model content
Technical assignment of the present utility model is to provide a kind of fork type elevator for above-mentioned deficiency of the prior art, this fork type elevator has makes that the stressed of maximum weighted point is greatly improved in the hinge-point, other stressed larger hinge-point with respect to the former also same degree reduction stressed, cut the fork structure respectively to cut the fork hinge-point stressed evenly, the stress point peak value is descended, reduced the consumption of material, provide cost savings, and the amplitude of oscillation obviously reduces, can fracture by fatigue, there is not use hidden danger, improved the characteristics of maximum height of lift and rated load.
The technical scheme that its technical matters that solves the utility model adopts is: it comprises added, chassis and is arranged on inner support and the outer support that is hinged between added and the chassis, the upper and lower of described inner support and outer support is respectively arranged with upper cylinder and lower oil cylinder, the stroke of described lower oil cylinder and upper cylinder is identical, and the cylinder diameter of lower oil cylinder is greater than the cylinder diameter of upper cylinder.
Cylinder diameter ratio 〉=0.7 of the cylinder diameter of described upper cylinder and lower oil cylinder and＜1.
Fork type elevator of the present utility model is compared with existing technology, have following outstanding beneficial effect: the cylinder diameter of lower oil cylinder is greater than the cylinder diameter of upper cylinder, make that the stressed of maximum weighted point is greatly improved in the hinge-point, stressed only have the former 46.7%, other stressed larger hinge-point with respect to the former also same degree reduction stressed, cut the fork structure respectively to cut the fork hinge-point stressed evenly, the stress point peak value is descended, it is thin that thereby inner support and outer support material can use, and reduced the consumption of material, provides cost savings, and the amplitude of oscillation obviously reduces, can fracture by fatigue, increased service life, there is not use hidden danger, maximum height of lift is 21 meters, improved maximum height of lift, and rated load is 1000kg, the characteristics such as easy to use.
Description of drawings
Accompanying drawing 1 is the structural representation of fork type elevator;
Description of reference numerals: 1, added, 2, inner support, 3, outer support, 4, upper cylinder, 5, lower oil cylinder, 6, the chassis.
The specific embodiment
With reference to explaining below 1 pair of fork type elevator work of the present utility model of Figure of description.
Fork type elevator of the present utility model, that its structure comprises is added 1, chassis 6 and be arranged on added 1 and chassis 6 between the inner support 2 and the outer support 3 that are hinged, the upper and lower of described inner support 2 and outer support 3 is respectively arranged with upper cylinder 4 and lower oil cylinder 5, described lower oil cylinder 5 is identical with the stroke of upper cylinder 4, and the cylinder diameter of lower oil cylinder 5 is greater than the cylinder diameter of upper cylinder 4.
Cylinder diameter ratio 〉=0.7 of the cylinder diameter of described upper cylinder 4 and lower oil cylinder 5 and＜1.
The cylinder diameter of lower oil cylinder is greater than the cylinder diameter of upper cylinder, make that the stressed of maximum weighted point is greatly improved in the hinge-point, stressed only have the former 46.7%, other stressed larger hinge-point with respect to the former also same degree reduction stressed, cut the fork structure respectively to cut the fork hinge-point stressed evenly, the stress point peak value is descended.
Except the described technical characterictic of specification sheets, be the known technology of those skilled in the art.
Claims (2)
1. fork type elevator, comprise added, chassis and be arranged on inner support and the outer support that is hinged between added and the chassis, the upper and lower of described inner support and outer support is respectively arranged with upper cylinder and lower oil cylinder, it is characterized in that: the stroke of described lower oil cylinder and upper cylinder is identical, and the cylinder diameter of lower oil cylinder is greater than the cylinder diameter of upper cylinder.
2. fork type elevator according to claim 1 is characterized in that: cylinder diameter ratio 〉=0.7 of the cylinder diameter of described upper cylinder and lower oil cylinder and＜1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220493226.6U CN202864821U (en) | 2012-09-25 | 2012-09-25 | Fork lifter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220493226.6U CN202864821U (en) | 2012-09-25 | 2012-09-25 | Fork lifter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202864821U true CN202864821U (en) | 2013-04-10 |
Family
ID=48031561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220493226.6U Expired - Lifetime CN202864821U (en) | 2012-09-25 | 2012-09-25 | Fork lifter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202864821U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102862930A (en) * | 2012-09-25 | 2013-01-09 | 济南大力神机械制造有限公司 | Scissor lift |
| CN112010240A (en) * | 2020-09-14 | 2020-12-01 | 江苏安全技术职业学院 | Lifting device for be used for control engineering |
-
2012
- 2012-09-25 CN CN201220493226.6U patent/CN202864821U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102862930A (en) * | 2012-09-25 | 2013-01-09 | 济南大力神机械制造有限公司 | Scissor lift |
| CN112010240A (en) * | 2020-09-14 | 2020-12-01 | 江苏安全技术职业学院 | Lifting device for be used for control engineering |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130410 |