DE9201381U1 - Buffer for ramps - Google Patents

Description

Our No. 27 079

Van Wijk Nederland B.V. Loodsweg 1

NL - 8243 PH Lelystad

Approach buffers for ramps

The innovation is a starting buffer for ramps, which can slow down the vehicle when docking and thus prevent damage to the ramp and/or vehicle.

Such buffers are known in numerous designs, but they have the disadvantage that they do not follow the lifting and lowering movements caused by the vehicle suspension during loading and unloading. The resulting friction and the corresponding transfer of force to the buffer and its fastening can destroy them.

The aim of the innovation is to develop a buffer that follows these up and down movements and thus prevents damage to the buffer and its fastening.

This goal is achieved by the fact that the buffer is supported horizontally by a frame construction.

tion is supported, whereby this construction has a rod fitted with a compression spring, over which a tube firmly connected to the buffer construction slides, which represents the guide for the vertical movement of the buffer.

The new buffer therefore includes

1.1 a buffer (1) fixedly arranged in a bracket (2), wherein a vertically running steel tube (20) is fixedly arranged on the bracket (2),

1.2 two profiles (3) running vertically on the side of the console (2), which are connected at their upper end via a cover plate (5) and have an angle (6) at the level of the buffer (1) and are connected at their lower end via an angle (4), whereby the profiles (3) form a frame with the cover plate (5), angle (6) and angle (4),

1.3 a guide (10) running parallel to the profiles (3) and vertically, which has a pressure element (11) at its lower end above the angle (4), wherein the pipe (20) is guided in the guide (10),

1.4 a tube (9) arranged on the angle (4), which ends below the compression spring (11).

Preferably, the frame construction formed by the profiles (3), angles (4) and (6) and plate (5) protrudes beyond the height of the buffer (1). Furthermore, by suitable selection of the pressure element (11), which is preferably a wound compression spring, the buffer (1) can be set below, above or at ramp height in the unloaded state. In the case of a compression spring, the appropriate length must be selected for this purpose.

Preferably, the length of the compression spring is selected so that the buffer (1) is at ramp height when at rest.

Furthermore, it is advantageous if the angle (6) has holes (8) and stiffeners (7).

Furthermore, steel pipe (20), pipe (9) and pressure element (11), which are arranged vertically in the same position one above the other, can be arranged in the middle of the construction delimited by bracket (2), buffer (1) and profiles (3). The mentioned construction parts are preferably made of steel and form a rigid frame.

The buffer width is preferably 250 mm, the depth 100 mm, the height 500 mm and the adjustment range between the maximum loads +150 mm to -150 mm.

Well-known materials such as rubber, plastic, cellulose are suitable as buffers; the console can be made of steel.

The innovation is explained in more detail in Figure 1.

Fig. 1 shows the ramp surface (16), which is preferably limited by horizontal angle irons (13, 14) and a vertical angle iron (12). These can be used to fasten the frame construction of the buffer according to the innovation. For example, a loading bridge (15) can also be integrated into the ramp surface (16).

The supporting structure of the movable buffer (1) with bracket (2) consists of preferably rigid U-shaped or tubular vertical profiles (3), an upper cover plate (5), a lower angle (4), an upper support structure, consisting of angle (6), which is preferably

Has fastening holes (8) and stiffening ribs (7) and is arranged at the height of the bracket (2), as well as a vertical guide (10). This guide (10) is preferably a round steel, which at the bottom ends in a tube (9) attached to the lower angle (4), which serves as a stop for a compression spring (11) wound around the guide (10).

The starting buffer itself comprises a buffer (1) with a steel bracket (2) and a vertical steel tube (20) welded in the middle of the bracket (2). This tube (20) is the same size as tube (9) that slides over the guide (10). (Tube (20) is not shown.)

Because the tube (20) presses on the compression spring (11) from above, the buffer is held at a certain height.

If a vehicle now drives backwards against the buffer (1), it is braked by it. If the vehicle is loaded or unloaded and the loading area is raised or lowered as a result, the buffer (1) with the bracket (2) and the pipe (20) running over the guide (10) moves freely upwards with the vehicle loading area and downwards against the force of the compression spring (11). This prevents damage because the loading process correlates with the movement of the buffer.

If the vehicle drives away, either the compression spring (11) pushes the buffer (1) with bracket (2) and tube (20) back up or the buffer (1) with bracket (2) and tube (20) falls down until the compression spring (11) catches the tube (20). This then returns the starting position.

The two possibilities are shown in Figure 1. (IB) shows buffer (1) in the uppermost position and (IA) the buffer in the lowest position.

In the manner described, a starting buffer can be provided in a simple manner that is correlated with the movements of the loading process.

Claims (9)

- 6 Protection claims 1. Ramp buffers, including 1.1 a buffer (1) fixedly arranged in a bracket (2), wherein a vertically running steel tube (20) is fixedly arranged on the bracket (2), 1.2 two profiles (3) running vertically on the side of the console (2), which are connected at their upper end via a cover plate (5) and have an angle (6) at the level of the buffer (1) and are connected at their lower end via an angle (4), whereby the profiles (3) form a frame with the cover plate (5), angle (6) and angle (4), 1.3 a guide (10) running parallel to the profiles (3) and vertically, which has a pressure element (11) at its lower end above the angle (4), whereby the pipe (20) is guided in the guide (10), 1.4 a tube (9) arranged on the angle (4), which ends below the compression spring (11). 2. Starting buffer according to claim 1, characterized in that the height of the profile rails (3) is greater than the height of the bracket (2) with buffer (1). 3. Starting buffer according to one of claims 1 or 2, characterized in that the steel tube (20), tube (9) and pressure element (11) are arranged vertically in the middle of the construction delimited by the bracket (2), buffer (1) and profiles (3). 4. Starting buffer according to one of claims 1 to 3, characterized in that the pressure element (11) is a wound compression spring. 5. Starting buffer according to one of claims 1 to 4, characterized in that the length of the pressure element (11) is selected according to the position of the buffer (1) at the level of the ramp in the unloaded state. 6. Starting buffer according to one of claims 1 to 5, characterized in that the upper angle (6) has bores (8) and stiffeners (7). 7. Starting buffer according to one of claims 1 to 6, characterized in that the lower angle (4), the profiles (3), the upper angle (6) and the cover plate (5) as a whole form a rigid construction. 8. Starting buffer according to one of claims 1 to 7, characterized in that the height difference between the maximum loads that can be compensated by the pressure element (11) is -150 to +150 mm. 9. Starting buffer according to one of claims 1 to 8, characterized in that the profiles (3) are tubular or U-shaped and the guide (10) is a round steel.