GB2139970A

GB2139970A - Device for resiliently mounting a driver's cab

Info

Publication number: GB2139970A
Application number: GB08406920A
Authority: GB
Inventors: Ulrich Teursch
Original assignee: O&K Orenstein and Koppel GmbH
Current assignee: CNH Industrial Baumaschinen GmbH
Priority date: 1983-03-17
Filing date: 1984-03-16
Publication date: 1984-11-21
Also published as: IT8447879A1; GB8406920D0; SE8401468D0; FR2542689B1; IT8447879A0; FR2542689A1; IT1178370B; DE3309556C2; DE3309556A1; GB2139970B; SE8401468L

Abstract

A device for mounting a driver's cab to supporting structure of a vehicle comprises a foot (5), for connection preferably to the supporting structure, received in a shoe (6), for mounting preferably on the cab, parallel flat surfaces of the foot and shoe being clamped against one another by at least one screw fastening (e.g. 11a, 11b) with resilient layers (7a,7b) being provided between opposing foot and shoe surfaces. The foot may be of rectangular, I or channel section, with the shoe being of rectangular section as shown or being formed by upper and lower plates interconnected by the screw fastenings which define the lateral limits of the shoe. A screw fastening may pass through the foot, and spacers, e.g. 9a,9b may be provided. <IMAGE>

Description

SPECIFICATION Device for attaching a driver's cab The invention relates to a device for attaching the driver's cab of a vehicle to the supporting structure.

Known devices for this purpose suffer from the disadvantage that specifically-manufactured (and therefore expensive) resilient parts and bearing elements are used which, in addition, require accu rate finishing of the bearing sites. Furthermore the resilient characteristic of the bearing can be altered only at considerable expense by exchanging the specially-manufactured resilient parts.

The problem to which the invention is directed is that of attaching a driver's cab in an oscillation- and noise-damped manner but non-positively to the supporting structure of a vehicle.

The present invention provides a device for attaching the driver's cab of a vehicle to the supporting structure, comprising a retaining foot and a retaining shoe having parallel flat surfaces clamped together with a resilient intermediate layer at the or each interface.

The retaining shoe may be in the form of a rectangle assembled from at least two individual parts. In one embodiment, three sides of the rectangular retaining shoe are formed by a continuous material profile. In another embodiment, three sides of the rectangular retaining shoe are made from a basic profile with two additional profiles affixed thereto.

The foot and show may be clamped together by at least one screw connection. When the shoe is of rectangular form, two sides of the shoe may be formed by screw connections. In another embodiment, the screw connection passes through the retaining shoe and the retaining foot. Alternatively, there may be at least two parallel screw connections.

One or more spacer pieces may be used for adapting the retaining foot to the size of the retaining shoe.

The or each resilient intermediate layer at the interface(s) between the retaining foot and the retaining shoe can be manufactured from one or more layers of laminar material.

The retaining foot can be manufactured from profile steel, either in a completely rectangular shape or in a double-Tform or other suitable shape providing two parallel surfaces.

The retaining shoe, slipped over the retaining foot, surrounds the latter generally only partly.

Advantageously, the retaining foot is rod-shaped.

It may have at least one rigid connection either with parts of the vehicle that are rigidly connected to the supporting structure or with the driver's cab. Preferably, the foot is provided on parts that are rigidly connected to the supporting structure of the vehicle and the retaining shoe is provided on the driver's cab.

Embodiments of the invention will now be described, by way of example, with reference to the accompanying drawings, in which: Figure 1 shows the use of retaining devices in a wheeled loader, or dumper; Figure 2 shows one form of retaining device according to the invention; Figure 3 is a view on the line A-A of Figure 2, and Figures 4 to 8 each shows a respective further form of retaining device according to the invention.

The same elements are provided with the same reference numerals in the individual Figures.

Figure 1 shows the use of a number of retaining devices 1 for attaching a driver's cab 2 to parts 4a and 4b that are rigidly connected to the supporting structure of a vehicle.

Figure 2 shows in detail one form of retaining device in accordance with the invention, in which the part that is rigidly connected to the supporting structure of the vehicle comprises a retaining foot 5 which is partly surrounded by a retaining shoe 6 provided on the driver's cab.

Figure 2 shows, in particular the screw connection of parallel flat surfaces of the retaining foot 5 and the retaining shoe 6 with resilient intermediate layers 7a and 7b provided at the interfaces 8a and 8b. At the same time, it is shown that spacer pieces 9a and 9b are also provided between the retaining foot 5 and the shoe 6 in order to compensate for inaccuracies and to adjust the pretension. In the Figure, it is also possible to see the attachment of a roll-over bar 10.

The retaining shoe 6 is assembled from two parts to form a rectangle, three sides being formed by one continuous material profile 20a and the fourth side being formed by a part 20b provided on the driver's cab. The screw connection of the retaining foot 5 and the retaining shoe 6 is achieved by two screws 1 1a and 1 1b extending parallel to each other across the shoe.

Figure 3 shows a section through the device, from which, in addition to the individual elements already described, it is possible to see limiting stops 12a and 12b which are provided to support lateral forces and to limit resilient deformation if the vehicle should turn over.

Figure 4 shows another retaining device in which two sides of the retaining shoe 6 are formed by the screw connections 11a and 1 1b. Each screw connection 11a,11b can be provided with a sleeve 13a, 13b.

Figure 5 shows a retaining device in which three connected sides of the retaining shoe 6 are formed by a basic profile 14 having two additional profiles 15a and 1 5b attached thereto.

Figure 6 shows an embodiment in which, for the screw clamping, there is provided at least one screw 16 passing through the retaining foot 5 as well as the retaining shoe 6.

Figure 7 shows a retaining device in which the resilient intermediate layers 7a and 7b are composed of several layers 17a, 17b, l7cand 18a, 18b, of a laminar material. In addition, the retaining foot of this device has a cross-section of a double-T shape, ratherthan the rectangular shape of the arrangements of Figures 2 to 6.

Figure 8 shows finally a U-shape design of retaining foot 5, there being provided between the retaining foot and the retaining shoe 6, in addition to the resilient intermediate layers 7a,7b, a single spacer piece 19.

Figures 7 and 8 show the use of alternative forms of retaining foot and illustrate that the foot may be of any desired shape provided that two parallel surfaces of the retaining foot lie opposite those of the retaining shoe.

Figure 3 of the drawings shows that the retaining foot 5 of the retaining device is surrounded only partly by the retaining shoe 6. As a result, vibrations must be taken up only by the resilient intermediate layers 7a, 7b at the interfaces between the retaining foot 5 and the retaining shoe 6 and cannot be transmitted by direct contact between the driver's cab 2 and the supporting structure 4a, 4b of the vehicle.

An advantageously-simple form of the retaining foot is a rod-shape construction connected at one point rigidly with the supporting structure of the vehicle either directly or via part(s) 4a, 4b rigidly connected to the supporting structure. If a U-shaped retaining foot is used, as shown in Figure 8, it may have two rigid connections to the vehicle supporting structure, although it is then possible to use only a partial region of the U-shape of the foot for force transmission purposes.

The preferred arrangement is that the retaining foot is provided on parts that are rigidly connected to the supporting structure of the vehicle and the retaining shoe is provided on the driver's cab. It is also possible in principle, however, to carry out an interchange of the retaining foot and the retaining shoe as regards these connections.

It will, of course, be understood that a driver's cab is generally provided with several, especially more than three, retaining devices. The use of retaining devices as described above is especially advantageous in construction vehicles having wheel drive, for example loaders or dumpers. Proceeding from the basis of the weight of these vehicles, retaining devices constructed as described have also proved capable of coping especially with the requirements of roll-over protection according to DIN 24090 and ISO 3471.

The advantage of the devices described above lies in the fact that it is possible to use, for the individual components, semi-finished articles that are available on the market in profile or plate form. Speciallymanufactured resilient materials are not necessary; the intermediate layers 7a, 7b provided as damping elements can be cut from plates in rectangular, square or any desired shape. In particular, the use of special toolsforfinishing is not necessary. Because it is possible to choose the strength, quality and size of the resilient intermediate layers 7a, 7h,the bearing can be designed in the most accurate manner and can be adapted to extremely different demands. Furthermore, the contact surfaces of the resilient intermediate layers 7a, 7b, do not have to be given special finishing. Both the resilient layers and spacer pieces simply ensure a reliable, and also non-positive, connection of the driver's cab to the supporting structure of the vehicle.

In the case of driver's cabs having a roll-over protection device the retaining device can, as indicated in Figures 2 and 3, act simultaneously for attaching reinforcing elements, bars and the like for the forces to be transmitted.

In summary, the retaining devices described can be manufactured not only completely economically but also to satisfy the customary technical requirements.

Claims

1. Device for attaching the driver's cab of a vehicle to the supporting structure, comprising a retaining foot and a retaining shoe having parallel flat surfaces clamped together with a resilient intermediate layer at the or each interface.

2. Device according to claim 1, in which the retaining shoe is in theform of a rectangle assembled from at least two individual parts.

3. Device according to claim 2, in which three sides of the rectangular retaining shoe are formed by a continuous material profile.

4. Device according to claim 2, in which three sides of the rectangular retaining shoe are made from a basic profile with two additional profiles affixed thereto.

5. Device according to any one of the preceding claims, in which the parallel flat surfaces of the retaining foot and retaining shoe are clamped together by at least one screw connection.

6. Device according to claim 5 when appended to claim 2, in which two sides of the rectangular retaining shoe are formed by screw connections.

7. Device according to claim 5, in which the screw connection passes through the retaining shoe and the retaining foot.

8. Device according to claim 5, in which there are at least two parallel screw connections.

9. Device according to any one of the preceding claims 1, in which, in the clamping between the retaining foot and the retaining shoe, there is provided at least one spacer piece.

10. Device according to any one of the preceding claims, in which the or each resilient intermediate layer comprises at least one layer of laminar material.

11. Device according to any one of the preceding claims, in which the retaining foot is formed by profiles having two parallel surfaces.

12. Device according to any one of the preceding claims, in which the retaining foot is only partly enclosed by the retaining shoe.

13. Device according to any one of the preceding claims, in which the retaining foot is rod-shaped.

14. Device according to any one of the preceding claims in which the retaining foot has at least one rigid connection either with parts of the vehicle that are rigidly connected to the supporting structure or with the driver's cab.

15. Device according to claim 14, in which the retaining foot is provided on parts that are rigidly connected to the supporting structure of the vehicle and the retaining shoe is provided on the driver's cab.

16. A vehicle in which the driver's cab is attached to the supporting structure by a plurality of devices each as claimed in any one of the preceding claims.

17. Awheeled construction vehicle in which the driver's cab is attached to the supporting structure by at least one device as claimed in any one of claims 1 to 15.

18. A device for attaching the driver's cab of a vehicle to the supporting structure, the device being substantially as described herein with reference to, and as shown in, Figures 2 and 3 or any one of Figures 4 to 8 of the accompanying drawings.