ES1059451U - Support foot for semirremolque (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Support foot for semi-trailer, consisting of a hollow body (1) inside which plays a sliding column (6), characterized in that it incorporates automatic locking means capable of immobilizing the sliding column (6) with respect to the hollow body (1) in discrete positions. (Machine-translation by Google Translate, not legally binding)

Description

Foot of support for semi-trailer.

The present invention relates to a new foot of support for semi-trailer, of the type of those that support the weight of the platform when the semi-trailer is decoupled from the Tractor head. Its field of application is that of transport, being especially useful for the semi-trailers that support its weight on the tractor unit during drag. The device of the invention offers a resting resting point, applicable to Will.

Systems are known for extension and retraction of supports that use screw and nut mechanisms. These devices are delicate, heavy and expensive, particularly if your drive is motorized, while if the maneuver is manual are very limited in terms of loads that may raise.

Trying to simplify the devices previous telescopic feet are provided with holes in which a locking pin can be manually inserted, That is uncomfortable and dangerous.

Consequently, it is an objective of the present invention having a lightweight and economical support foot, not subject to breakdowns, allowing automatic height adjustment With respect to the ground.

The proposed solution is based on investing the usual approach of the devices of the first group above described, which raise the platform with respect to the head tractor must perform said movement against the weight of the same. The device of the invention works in coordination with the pneumatic suspension of the tractor unit, occurring Automatically lock the support by reducing the height of is.

The device of the invention consists of a hollow body, fixed to the front and on each side of the semitrailer platform, inside which plays a column slider that ends inferiorly on an articulated support foot in the ground. The sliding column can be made integral with the hollow body by means of blocking which, in one embodiment preferred, comprise an automatic actuation pin by spring, which is inserted in through holes and lock arranged both in the hollow body and in the spine slider

In this way, when you want to decouple the Tractor head of the semi-trailer, the means of lock, dropping the sliding column down until the foot Support on the ground. In this position the block means remain released but willing to block the device from automatically under the action of the spring, which occurs at reduce the height of the tractor unit by acting on the pneumatic suspension of it.

To attach the tractor unit to the semi-trailer it operates in the opposite direction, raising the height of that one until that the semi-trailer is supported on it and the feet of support separated from the ground. At that time the means of lock and manually lift the sliding column to the desired position that offers a good guard to the ground, immobilizing it through the blocking means themselves.

The advantages of the device of the invention are considerable, since its revolutionary approach allows suppressing The lifting mechanism, like this:

- It is light and economical.

- No breakdowns.

- Your maneuver is safe and intuitive.

To complement the description above and in order to help a better understanding of the characteristics of the invention a detailed description of a preferred embodiment, based on a set of drawings that accompany this descriptive report and where with character merely indicative and not limiting what has been represented next:

Figure 1 shows an elevation view of the device of the invention in which the media have been suppressed Lock to improve your clarity.

Figure 2 shows an elevation view of the device of the invention with the sliding column retracted and blocking means executed according to one embodiment preferred.

Figure 3 shows a side view of the device of figure 2.

Figure 4 shows a top view of the device of figure 2.

Figure 5 is a schematic section of the locking means in column interlock position sliding with respect to the hollow body.

Figure 6 is a schematic section of the locking means in column release position sliding with respect to the hollow body, but ready to produce the automatic locking under the action of the spring.

Figure 7 shows a perspective view of the device of the invention, mounted on the platform of a semitrailer.

In the previous figures the references Numeric correspond to the following parts and elements:

one.

Body hole

2.

Wings lateral

3.

Holes fixation.

Four.

Platform of semitrailer.

5.

Holes interns

6.

Column slider

7.

Foot.

8.

Bolt

9.

Grip.

10.

Holes blocking.

eleven.

Means of blocking.

12.

Barrette.

13.

Handle.

14.

Guide shaft

fifteen.

Stop, top, maximum as a noun, top as an adverb mobile.

16.

Tube guide.

17.

Stop, top, maximum as a noun, top as an adverb permanent.

18.

Spring.

19.

Washer.

twenty.

Flange.

As can be seen in figures 1, 2, 3, 4 and 7 the support foot for semi-trailer object of the invention consists of a hollow body (1), of square section, provided with two wings sides (2) that have fixing holes (3). About him hollow body (1) there are two through holes (5) facing each other each other, one on the previous surface and the other on the back surface.

Inside the hollow body (1), and with small clearance, a column can move vertically slide (6) made in square section tube and preferably in a lightweight material such as aluminum, which ends inferiorly in a foot (7) articulated by a bolt (8), whose front end can be folded to constitute a handle (9). The sliding column (6) has a series of locking holes (10), regularly spaced and facing each other, both on the front surface and on the surface later.

The blocking means (11) are constituted by a pin (12) of the appropriate diameter to enter with minimum slack in both the through holes (5) of the hollow body (1) as in the locking holes (10) of the sliding column (6). It is extended by a right angle fold in a handle (13) that after a second right angle fold it becomes a guide axis (14) parallel to the pin (12), ending in a movable stop (15), cancel. A guide tube (16) terminated in a fixed stop (17), annular, receives inside the guide shaft (14) and a spring (18), wrapped around it, whose ends are compressed between the movable stop (15) and the fixed stop (17). In this way the axis guide (14) can move inside the guide tube (16), in both senses, either under the action of the spring (18) or by a manual traction on the handle (13), remaining perfectly guided by the sliding adjustment between the movable stop (15) and the guide tube (16) and between the fixed stop (17) and the guide shaft itself (14). A washer (19), integral with the guide shaft (14), limits the travel of this under the action of the spring (18). Finally a flange (20), attached externally to the guide tube (16) allows its fixation, welded or bolted on one of the side wings (2). See figures 5 and 6.

The operation of the device of the invention It is as follows. During the semitrailer towing the column Slider (6) remains locked in a position sufficiently elevated to guarantee the necessary guard to the ground. Upon arriving at destination, the handle (13) is pulled until the pin (12) comes out so much of the locking holes (10) of the sliding column (6) as of the through holes (5) of the hollow body (1), at which time the sliding column (6) will fall by its own weight until the foot (7) rest on the floor. If we now release the handle (13), the spring (18) push the pin (12) through the through hole (5) front, being retained by the front surface of the sliding column (6), as shown in Figure 6, since the through holes (5) and the locking holes (10) do not they have to face each other as shown in figure 1. By acting on the pneumatic suspension of the tractor unit reducing its height, the sliding column (6) will leave introducing into the hollow body (1) until the through holes (5) with some locking hole (10), moment wherein the pin (12), pushed by the spring (18) will move to the position of figure 5, causing the column to block sliding (6) with respect to the hollow body (1). A reduction additional height of the tractor unit will allow to release the same of the semi-trailer, being its platform (4) supported by the device of the invention, as shown in the figure 7.

To perform the reverse operation, the height of the tractor unit until the foot (7) rises from the ground when, without any danger, we can retract the sliding column (6) lifting it manually helping us handle (9), while pulling the handle (13) to release the blocking means. Reached the desired position we will release the handle (13) to cause the blocking of the sliding column (6).

They will be evident to a person skilled in the art series of modifications and variants that, without departing from the essentiality of the invention, structurally depart from the proposed solution in the preferred embodiment described. So, it has provided that the pin (12) the handle (13) and the guide shaft (14) are make from the same rod bent in "U" but it you would get the same result with a straight rod by positioning the guide shaft (14) between the pin (12) and the handle (13) which, of this shape, it would also be accessible frontally. The guide tube (16) should then be welded on the anterior face of the hollow body (one). Such a solution is simpler but less compact.

The variants described are presented only by title Non-limiting example, as there are numerous alternatives structural aspects that will be evident to the expert professional, and They ensure identical functionality.

As for materials, it will be advantageous to use the aluminum for the sliding column (6) in order to limit the weight to lift

Claims (4)

1. Foot of support for semi-trailer, of those constituted by a hollow body (1) inside which plays a sliding column (6), characterized in that it incorporates automatic locking means capable of immobilizing the sliding column (6) with respect to the hollow body ( 1) in discrete positions. 2. Support foot for semi-trailer, according to claim 1 characterized in that the hollow body (1) has two through holes (5), facing each other, one on its front surface and one on its rear surface, the sliding column (6) it has a plurality of blocking holes (10) capable of facing the through holes (5), and the blocking means comprise a pin (12) capable of traversing the hollow body (1) through the through holes (5) and the Sliding column (6) through the locking holes (10) when pushed by the action of a spring (18). 3. Foot of support for semi-trailer, according to claim 2 characterized in that the pin (12) extends in a handle (13), folded at right angles, which ends after a second right angled bend in a guide axle (14 ) parallel to the pin (12), which ends in a movable stop (15), annular; and for comprising a glutton tube (16) terminated in a fixed annular stop (17), which receives inside the guide shaft (14) and the spring (18), wound around it, whose ends are compressed between the stop mobile (15) and the fixed stop (17). 4. Support foot for semi-trailer, according to claim 1, characterized in that both the hollow body (1) and the sliding column (6) are square in section.