CN201087107Y

CN201087107Y - Third level door frame

Info

Publication number: CN201087107Y
Application number: CNU2007201118487U
Authority: CN
Inventors: 李书广
Original assignee: ZHEJIANG JIALI TECHNOLOGY Co Ltd
Current assignee: ZHEJIANG JIALI TECHNOLOGY Co Ltd
Priority date: 2007-07-16
Filing date: 2007-07-16
Publication date: 2008-07-16
Anticipated expiration: 2017-07-16

Abstract

The utility model relates to a three stage gantry, which belongs to the mechanical hoisting device. Defaults that the visual field is not wide, and the carrying capacity of a fork truck is relatively lower are existed in the prior art. The utility model is composed of an inner gantry, a middle gantry and an outer gantry, wherein, the cross section of the shaped section of the vertical column used by the inner gantry and the middle gantry presents an H shape, and the utility model is characterized in that the cross section of the shaped section of the vertical column used by the outer gantry presents a right-opening U shape. Compared with the prior art, the visual field of the proposal is wide; the carrying capacity is enhanced; the X-X axle longitudinal inertia moment Jx and the longitudinal section factor Wx are greatly increased relatively to the prior art, and therefore, the total bending strength, the partial bending strength and the rigidity of the gantry are greatly enhanced.

Description

Three grades of door frames

Technical field

The utility model belongs to mechanical lifting device, and a kind of specifically fork truck is with three grades of door frames.

Background technology

It is the section bar of " H " shape during as three grades of door frame columns that the tradition fork truck adopts the cross section, and inner upright mounting, middle door frame, outer mast pass, position each other is " III " arrangement form (see figure 2), has the following disadvantages:

1. the inner upright mounting inner cavity size is less, and driver's seat is unopen;

2. the door frame front overhang is big, and the fork truck load-carrying capacity is relatively low.

The utility model content

The technical assignment of the technical problems to be solved in the utility model and proposition is to overcome the defective that the visual field is unopen, the fork truck load-carrying capacity is relatively low that prior art exists, the fork truck that a kind of new structure is provided is with three grades of door frames, to enlarge driver's seat and to improve the fork truck load-carrying capacity.For this reason, the utility model is by the following technical solutions:

Three grades of door frames are made up of inner upright mounting, middle door frame, outer mast, and the used section bar of the column of described inner upright mounting, middle door frame cross section is " H " shape, it is characterized in that the used section bar of the column cross section of described outer mast is

Shape.

As the further of technique scheme improved and replenish, the utility model also comprises following additional technical feature:

It is used that two gulde edges of described middle door frame column used " H " shape section bar are positioned at described outer mast column

The inboard of shape section bar two gulde edges.

Described inner upright mounting, middle door frame, outer mast are respectively by two columns of symmetry be connected two crossbeams between the column and constitute.

The utility model is by changing the used section bar of the column of outer mast cross section into

Shape makes inner upright mounting, middle door frame, outer mast position relation each other become " CII " arrangement form, the many deficiencies when having remedied traditional forklift door frame column and all adopting " H " tee section section bar as three grades of door frame columns, and its major advantage is:

1. when the door frame width is identical (size C1=C2), the distance increase between inner upright mounting two columns of the present utility model (size A1＞A2), so the broad view of three grades of door frames of more traditional fork truck;

2. (size B1＜B2), the utility model load-carrying capacity improves when other parameter of car load is identical in door frame front overhang minimizing of the present utility model;

Before and after the door frame profile upperlimit identical (being D1=D2) and Under the shape section bar prerequisite close with " H " shape section bar sectional area,

The width of shape column section bar (being the fore-and-aft direction size) (is E1＞E2) greater than the width of " H " shape column section bar, therefore, X-X axle longitudinal moment of inertia Jx of the present utility model, the longitudinal cross-section relative prior art of coefficient Wx increase substantially, and door frame integral bending, local bending strength and door frame rigidity are improved greatly.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the prior art constructions scheme drawing.

Among the figure: the rotating shaft of 1-door frame, 2-outer mast column, the gulde edge of 21-outer mast column, door frame column among the 3-, the gulde edge of door frame column among the 31-, 4-roller, 5-inner upright mounting column; Distance between A1/A2-inner upright mounting two columns, B1/B2-door frame front overhang, profile upperlimit before and after the C1/C2-door frame width, D1/D2-door frame, the width of E/E2-column section bar.

The specific embodiment

As shown in Figure 1, door frame rotating shaft 1 is welded in respectively

The left and right outer mast column of type 2 both sides,

The left and right outer mast column 2 of type is connected into outer mast by some crossbeam (not shown) assembly weldings, door frame column 3 was connected into middle door frame by some crossbeam (not shown) assembly weldings during the H type was left and right, the left and right inner upright mounting column 5 of H type is connected into inner upright mounting by some crossbeam (not shown) assembly weldings, be welded with some rollers 4 respectively on inner upright mounting column 5, middle door frame column 3, the outer mast column 2 and guarantee three's slide relative freely, mix again such as annexes such as oil cylinder, chain (principle, form are made device with traditional Forklift Worker, and be not shown in the figures) and just form complete fork truck equipment.Middle door frame column two gulde edges 31 are positioned at the inboard of outer mast column two gulde edges 21.

Claims

1. three grades of door frames are made up of inner upright mounting, middle door frame, outer mast, and the used section bar of the column of described inner upright mounting, middle door frame cross section is " H " shape, it is characterized in that the used section bar of the column cross section of described outer mast is

Shape.

2. three grades of door frames according to claim 1, it is characterized in that described in two gulde edges of door frame column used " H " shape section bar to be positioned at described outer mast column used

The inboard of shape section bar two gulde edges.

3. three grades of door frames according to claim 1 and 2 is characterized in that described inner upright mounting, middle door frame, outer mast are respectively by two columns of symmetry be connected two crossbeams between the column and constitute.