DE1190154B - Mobile and height-adjustable work platform with articulated mast - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

Number:
File number:
Registration date:
Display day:

B66f

German class: 35 d- 9/05

1190 154 B70830XI / 35d February 21, 1963 April 1, 1965

The invention relates to a mobile and height-adjustable work platform with an articulated mast to the a boom pivotable about a vertical axis is articulated and in which at the connection point the boom with the articulated mast or an auxiliary arm at the junction of two mast parts is hinged, which is connected to each of the adjacent components via a lifting device, according to U.S. Patent 1,127,564.

It has long been known to have a boom around a fixed vertical axis over only one To arrange pitch circle horizontally pivotable.

It is also known to have an articulated mast in the area of its articulation points both horizontally and to make vertically pivotable. However, with a relatively complicated structure, the Swivel range in the horizontal and / or vertical direction reduced to allow swiveling in in both directions.

The main patent 1127 564 is a mobile one height-adjustable work platform with articulated mast became known, in which not only the horizontal The swivel circle is equal to the full circle of 360 °, but also the vertical pivotability the work platform attached to a two-part articulated mast through the arrangement an auxiliary arm cooperating with a lifting device is about 260 °, so that the platform any point in a spherical space

Mobile and height-adjustable work platform with articulated mast

Addendum to the patent: 1127 564

Applicant:

Vincenzo Di Benedetto, Rome representative:

Dipl.-Phys. W. Kemp, patent attorney,

Cologne-Lindenthal, Goldenfelsstr. 24

Named inventor: Vincenzo Di Benedetto, Rome

Claimed priority: Italy of April 19, 1962 (7792), of June 13, 1962 (13 793)

is therefore bought at the cost of a higher weight and complexity of the entire facility.

In many cases, rotation through 360 ° is superfluous, while weight and effort can be saved, the center of which on the fixed point falls heavily into the scales,
the vertical axis on which the articulated mast is the object of the invention is therefore a little

is attached. The end of the auxiliary arm is to give an elaborate and relatively light construction to the common pivot point of two neighboring ones, with which it can be pivoted by 260 ° from 35 to 260 ° while maintaining the vertical pivot point of the articulated mast on the boom, which is achieved according to the components of the articulated mast or the main articulation patent one point above up to one, while the angle between the point below the mast base is possible to pivot the mast auxiliary arm and each of the two adjacent to it additionally by 180 ° horizontally,
th components by double-acting, each of these is proposed according to the invention,

Components with the free end of the auxiliary arm mean that the auxiliary arm can be rotated from two around an axis binding hydraulic lifting device controlled 40 consists of interconnected parts, the will. a part on the adjacent mast or

Such a configuration of the auxiliary arm GE boom part and the adjoining mast part on however, does not equip the other part of the auxiliary arm to swing out to the side Working platform supporting articulated mast. Since the axis mentioned, vertical axes can be swiveled If the auxiliary arm forms a rigid unit, the joint 45 must be attached.

mast to with its platform-supporting end With this arrangement, that of the invention

Every point of the spherical space mentioned is covered by the underlying task in an astonishingly simple way to be able to solve according to the main patent in a way. It becomes even more Boom are articulated, which even achieved 360 ° degree of mobility in that the auxiliary rotatable is, so that to achieve such a 50 poor and thus the axis between the auxiliary arm rotatability divide a particular prop or turntable from a vertical position continuously is required. This horizontal rotatability can be pivoted into a horizontal position.

509 537/100

Appropriately, one sees according to the invention that the two parts of the auxiliary arm from two with their flanges are interlocking U-shaped brackets and that the pivot axis through this flange runs.

In a further embodiment of the invention it is proposed that the horizontal axes on a web of the U-shaped bracket are arranged and to move the auxiliary arm or the Attack subsequent mast part serving lifting devices at the other end of the bridge.

Due to the relative independence of the articulated mast from its support, its field of application is expanded so that it can also be used to carry out other types of work, e.g. B. by using appropriate devices instead of the work platform. Of course, such an auxiliary arm can also be attached to a horizontally rotatable boom, whereby, in particular in the case of elongated work platforms, an often desirable additional lateral pivotability of the same can be achieved.
- In the following an embodiment of the invention and two examples of use thereof are described in more detail with reference to the drawings. In these drawings shows

F i g. 1 an embodiment of the two-part auxiliary arm,

F i g. 2 its use in an articulated mast designed as a scraper,

F i g. 3 its application to an articulated mast with an extended platform,

F i g. 4 shows a preferred type of control of the type of control shown in FIG. 4 shown embodiment.

In Fig. 1, the auxiliary arm is designated in its entirety by the reference number 1. It consists of a U-iron or bracket 2, which is rotatably connected to another U-iron or bracket 3, which can be inserted between its two flanges, via two pins 4 each connecting the flanges 2 a and 3 α or 2 b and 3 b .

The bracket 2 is connected with one end by an axle 5 directly to a part 7 of a vehicle and with the opposite end indirectly via a hydraulic lifting device 6 to the vehicle 7, the piston 6 a of the lifting device 6 at 8 on the bracket 2 and the cylinder 6 b of the lifting device is articulated to the vehicle body 7 at 9. At its lower end, the bracket 3 is connected directly to the articulated mast part 11 via an axle 10 and at the top indirectly via a hydraulic lifting device 12. This results in between the two adjacent components 7 and H, identical to the main patent, vertical pivotability of the latter relative to the former by 260 °, to which there is also a horizontal rotation of at least 180 ° about the axis passing through the two pins 4.

Fig. 2 shows the application of the invention Device in an excavator. The mast part 11 is shown in FIG. 2 illustrated way a correspondingly reinforced vehicle body 7 can be pivoted. Since the axis of rotation 5 of the auxiliary arm 1 when tilted back is much lower than in the main patent and the auxiliary arm itself is in its starting position is vertical, it reaches 6 when the lifting device is fully extended a horizontal position, so that by the additional extension of the lifting device 12 of the articulated mast part 11 can be pivoted further by about 130 ° relative to the horizontal, whereby the end of the articulated mast can reach the low position shown.

In the present embodiment, the second articulated mast part 14 is at 15 on the first articulated mast part 11 hinged, so at a certain distance from its end, which is through the pin 17 with the

ίο piston 16a of a lifting device 16 is connected, the cylinder 16 at 18 b pivotally connected to the mast part 11 is connected. This arrangement enables a force-controlled rotation of the mast part 14 about the pin 15 via the lifting device 16, while the movement of the shovel 21 hinged at the remote end of the mast part 14 via the pin 20 via the likewise hydraulic lifting device 19 and the articulated lever square connected to it at 22 rotatably 20-23-24-25 takes place.

The working area of this embodiment, designed as a scraper, is lowered horizontally Auxiliary arm 1 is shown in the side view of FIG. 2 indicated.

Mounted on a vehicle, such an articulated mast, from a bridge or from a other support surface to an approximately circular area without moving the vehicle coat. It would even be possible between the wheels of the stationary vehicle, for example dig a ditch the width of which corresponds to the wheelbase of the vehicle. Of course this type of design can also be mounted on watercraft, giving them the possibility offers, without moving the watercraft itself, to dredge the river bed under it in a circular manner.

F i g. 3 shows an embodiment of the articulated mast as a work platform in which the auxiliary arm 1 is attached to the rotatable boom 107 in order to achieve additional horizontal pivotability. The articulated mast in this case, apart from the auxiliary arm, is identical to that of the main patent, so the pivoting of the second mast part 114 is carried out by the hydraulic lifting device 116 via the four-bar linkage 120-123-124-125.

In this embodiment, however, a third articulated mast arm 126 is added. However, this arm takes the form of an elongated work platform. Expediently (FIG . 4) the floor of the platform consists of closely spaced flat elements 128 which can be rotated about parallel axes 130-130 and which are always held parallel to one another via any known device that is therefore not described and illustrated here and in any desired Inclination can be set. It is particularly advantageous here to attach a device which always automatically holds the floor elements 128 in the horizontal position, regardless of the respective inclination of the arm 126.

The floor elements 128 lie between two longitudinal beams 129 in which their axis 130 is rotatably mounted.

This third arm 126 , designed as a working platform, can either, similarly to the mast parts 111 and 114, hydraulically or independently of these via known devices, such as. B.

an electric motor with transmission gear, or can be operated by hand.

In the case of the here in FIG. 4, the embodiment shown in plan view, the pistons 132 working in the hydraulic cylinders 131 of the double-acting hydraulic lifting devices attached to both sides of the articulated mast part 114 end in toothed racks 132 a, the free ends of which are guided in bores 133. These toothed racks mesh with toothed wheels 134 which are fastened to the fork-shaped spread-out longitudinal members 129 of the third arm 126. By this means, the arm 126 can be moved from the device shown in FIG. 3 working position shown in full extension can be held in any inclination or even completely folded back. The drive can expediently be controlled from the platform 135, from which a web (FIG. 4) leads to the rungs 128 of the arm 126 .

Thanks to the inclusion of an auxiliary arm 1 between the boom 107 and arm 111 , the work platform 135 and thus the third arm 126 can be pivoted out independently of the boom 107 , which not only allows a much larger work surface to be painted, but also makes it easier to reach certain areas. On the other hand, the arm 126 in the position indicated by dashed lines can also serve as a ladder, whereby the range and application possibilities of the device are still increased significantly. The lateral pivoting of part 2 and thus of the entire articulated mast with respect to part 1 as well as the fixing of the same in a selected position can be carried out using known means, such as gears, hydraulic systems, etc. These means and systems are well known and therefore their detailed treatment or presentation has not been given here.

Claims (3)

Patent claims: 1. Mobile and height-adjustable work platform with articulated mast, which is articulated on a boom pivotable about a vertical axis and in which an auxiliary arm is articulated at the junction of the boom with the articulated mast or at the junction of two mast parts, which is linked to each of the adjacent components via a Lifting device is connected, according to patent 1127564, characterized in that the auxiliary arm (1) consists of two parts (2, 3) rotatably connected to one another about an axis (4), one part (2) on the mast or adjacent to it Cantilever part and the adjoining mast part (11, 14) is attached to the other part (3) of the auxiliary arm so as to be pivotable about horizontal axes (5, 10) perpendicular to said axis (4). 2. Articulated mast according to claim 1, characterized in that the two parts (2,3) of the auxiliary arm (1) consist of two interlocking U-shaped brackets with their flanges (2 a, 3 a, Ib, 3b) and that the pivot axis (4) runs through these flanges (2a, 3a, 2b, 3b) . 3. Articulated mast according to claim 1 and 2, characterized in that the horizontal axes (10, 5) are arranged at one end of the web of the U-shaped bracket and the for moving the auxiliary arm (1) or the adjoining mast part (11, 14) Attack serving lifting devices (6, 12) at the other end of the web. Considered publications:
German Auslegeschrift No. 1127 564;
French Patent No. 1,070,006;
U.S. Patent Nos. 2,674,500, 2,672377, 991. 1 sheet of drawings 509 537/100 3.65 © Bundesdruckerei Berlin