CN105883685A - Structural design for light forklift gantry system - Google Patents
Structural design for light forklift gantry system Download PDFInfo
- Publication number
- CN105883685A CN105883685A CN201410611941.9A CN201410611941A CN105883685A CN 105883685 A CN105883685 A CN 105883685A CN 201410611941 A CN201410611941 A CN 201410611941A CN 105883685 A CN105883685 A CN 105883685A
- Authority
- CN
- China
- Prior art keywords
- layer pipe
- door frame
- forklift
- fork truck
- roller
- 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.)
- Pending
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Abstract
The invention discloses the structural design for a light forklift gantry system. An outer rectangular steel tube and an inner rectangular steel tube which are arranged at intervals of 5 mm are used for replacing an inner-layer gantry and an outer-layer gantry of a forklift, and a forked frame is arranged on the outer-layer pipe in a sleeving mode. When the forklift operates, the forked frame moves up and down along the outer-layer pipe; loads are transmitted to the outside of the outer-layer pipe through rolling wheels in a couple moment mode; and upper action points are at two corner angles of the back side of the outer-layer pipe, and lower action points are at two corner angles of the front side of the outer-layer pipe. The outer-layer pipe moves up and down along the inner-layer pipe and transmits the couple moment to the inner-layer pipe, the lower portion acts on two corner angles of the outer front side of the inner-layer pipe through the rolling wheels, and the upper portion acts on rolling wheels on the back side of the top of the inner-layer pipe through the pipe inner wall. By means of the structural design, the weight of the gantry system is decreased, the flexibility of the forklift is improved, and the production cost is reduced; and meanwhile, gantry vertical columns are installed in the 1/3 position of the right side of a shaft base, and the visual disturbance of a driver is eliminated on the premise that the overall balance of the forklift is not affected.
Description
Art
This utility model relates to the structure design of the portal frame system of a kind of light fork truck.
Background technology
The inside and outside door frame of common fork truck, respectively by left and right two root post, is formed by connecting portal frame by the crossbeam of varying number,
Then nesting together, rely on and be contained in the roller on inside and outside door frame, make inner upright mounting move along outer mast column, crotch then leads to
Cross roller moving along inner upright mounting.During fork truck work, load is delivered to internal layer door frame, internal layer with the form of the moment of couple by roller
Door frame acts on outer layer door frame the most in the same way.Generally there are C-shaped, work shape, J-shape and L-shaped in the cross section of door frame column,
Roller can form bigger moment on guide groove, and this just requires that door frame column has higher thickness to meet the demand of intensity, one
Determine to add in degree the weight of fork truck front end.
Summary of the invention
To forklift door frame system redesign so that it is structure more simplifies, to alleviate fork truck front end weight, thus realize improving spirit
Active, cost-effective, widen the purposes such as Driver Vision scope.
Technical scheme: fork truck is provided only with a door frame column, is not required to crossbeam, is made up of inside and outside two rectangular steel pipes, and spacing is 5mm,
Hydraulic cylinder is contained in inner tube, and crotch is enclosed within outer tube.When fork truck normally works, outer tube jack-up, crotch are led to by hydraulic cylinder
Crossing roller to move along outer tube, outer tube is then moved along inner tube.Load is transmitted by the roller of crotch with the form of the moment of couple
To the outside of outer tube, the application point on top two edges and corners on rear side of outer tube, lower reaction point is at two corner angle of front side
Place.The moment of couple is delivered in inner tube again by outer tube by roller, outer tube bottom installing roller, acts on outside inner tube
Two edges and corners, front side, top is acted on inner tube top installing roller by inwall, and roller is along outer tube inner back side two
Individual edges and corners fortune merit, reduces the moment that rectangular steel pipe is born to a certain extent.Compared with common fork truck, when the iron and steel used
When material is identical with design limit load, the thickness of this forklift door frame column is lower.It addition, an only door in this portal frame system
Erect post, and eliminate several crossbeam, simplify whole system largely, reduce fork truck front end weight.Along with door frame
The simplification of system, when door frame column is installed at axle bed side to the right 1/3, the whole machine balancing of fork truck is not affected, and drives
The visual range of the person of sailing is widened further.
Beneficial effect: compared with common fork truck, the portal frame system of this fork truck more simplifies, front end weight is lower, motility is higher,
Driver Vision is wider.The steel that this forklift door frame column is used are carbon structural steel, and thickness is 3.5mm, fork
It is 2.5m that car elevates height, and lifting capacity is 1 ton, and the weight of whole fork truck is 300kg, and the weight of portal frame system is only 130kg.
When lifting capacity is identical, material and the usage amount of iron and steel are required lower by forklift door frame column, have largely saved production
Cost.
Accompanying drawing explanation
Fig. 1 is the front view of novel forklift.
Fig. 2 is the force diagram (this figure is right view) of crotch.
Fig. 3 is the compound mode of crotch and outer tube.
Fig. 4 is outer tube force diagram (this figure is right view).
Fig. 5 is the model of action of door frame outer tube bottom and inner tube.
Fig. 6 is the model of action on an outer tube top and inner tube.
Detailed description of the invention
In FIG, fork truck is provided only with a door frame column, is made up of inside and outside two rectangular steel pipes, and crotch is enclosed within
In outer tube.
In fig. 2, when there being weight on pallet fork, crotch load is delivered to outer tube with the form of the moment of couple
On, the outside of outer tube is acted on by upper roller, roller is then by the counteracting force of outer tube.
Crotch roller acts on the edges and corners outside outer tube in figure 3, and lateral roller is then lateral in order to bear
Power, it is ensured that crotch, when moving up and down, is not stuck.
In the diagram, the moment of couple is delivered in inner tube by outer tube by roller, and the roller of outer tube bottom is made
Being used in outside inner tube, roller is then acted in inner tube by inwall by the counteracting force of inner tube, top
On portion's installing roller, inwall is by the counteracting force of this roller.
The roller of outer tube bottom moves along the edges and corners of inner tube in Figure 5, and lateral roller is also for holding
By side force.
In figure 6, the moment of couple is acted on roller by inwall equipped with roller, outer tube by internal layer upper end, rolling
Take turns along two edges and corners fortune merits of outer tube inner back side.Hydraulic cylinder is arranged in inner tube, top and outer tube
Connect with pivot pin, during lifting, by outer tube jack-up.
Claims (4)
1. the structure design of a light fork truck portal frame system, forklift door frame only has a door frame column, spacing be the two of 5mm
Individual rectangular steel pipe forms.Hydraulic cylinder is contained in inside inner tube, and head is connected with outer tube by pivot pin.Crotch is enclosed within outer layer rectangle
Outside steel pipe.
The crotch of light fork truck door frame column the most according to claim 1, is characterized in that when fork truck works, along outer tube
Motion, the moment of couple is delivered to two edges and corners of outer tube external posterior side by crotch roller.
The outer layer pipe of light fork truck door frame column the most according to claim 1, is characterized in that moving along inner tube, and
The moment of couple is delivered to inner tube, and bottom acts on two edges and corners on front side of inner tube outside by roller, and inside pipe wall is passed through on top
Act on the roller of inner tube top rear.
Light fork truck door frame column the most according to claim 1, is characterized in that being arranged at axle bed sheet side to the right 1/3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410611941.9A CN105883685A (en) | 2014-10-30 | 2014-10-30 | Structural design for light forklift gantry system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410611941.9A CN105883685A (en) | 2014-10-30 | 2014-10-30 | Structural design for light forklift gantry system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105883685A true CN105883685A (en) | 2016-08-24 |
Family
ID=56697962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410611941.9A Pending CN105883685A (en) | 2014-10-30 | 2014-10-30 | Structural design for light forklift gantry system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105883685A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2915144A (en) * | 1955-10-31 | 1959-12-01 | Hyster Co | Free lift truck |
| US20060070816A1 (en) * | 2004-09-30 | 2006-04-06 | Schroder Werner G | Lift truck with central mast |
| CN201087117Y (en) * | 2007-07-30 | 2008-07-16 | 吴继生 | Movable nestification type elevator |
| CN201526324U (en) * | 2009-03-19 | 2010-07-14 | 中国人民解放军总参谋部工程兵科研三所 | Combined type operation platform for defense engineering underground tunnel construction |
| CN202346708U (en) * | 2011-09-22 | 2012-07-25 | 比亚迪股份有限公司 | Forklift gantry component and forklift |
| US20120228064A1 (en) * | 2011-03-11 | 2012-09-13 | LiftSmart, LLC | Cam driven wedge braking system for multi-stage lifts |
-
2014
- 2014-10-30 CN CN201410611941.9A patent/CN105883685A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2915144A (en) * | 1955-10-31 | 1959-12-01 | Hyster Co | Free lift truck |
| US20060070816A1 (en) * | 2004-09-30 | 2006-04-06 | Schroder Werner G | Lift truck with central mast |
| CN201087117Y (en) * | 2007-07-30 | 2008-07-16 | 吴继生 | Movable nestification type elevator |
| CN201526324U (en) * | 2009-03-19 | 2010-07-14 | 中国人民解放军总参谋部工程兵科研三所 | Combined type operation platform for defense engineering underground tunnel construction |
| US20120228064A1 (en) * | 2011-03-11 | 2012-09-13 | LiftSmart, LLC | Cam driven wedge braking system for multi-stage lifts |
| CN202346708U (en) * | 2011-09-22 | 2012-07-25 | 比亚迪股份有限公司 | Forklift gantry component and forklift |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160824 |