ES2326444B1 - TELESCOPIC BAR AND USE OF SUCH BAR FOR ELEVABLE CAGES. - Google Patents

Abstract

Telescopic bar and use of said bar for lifting cages

The object of the present invention is a bar telescopic that allows the regulation of the extension of form safe so that even if the screw tighten or the ram bolts loosen on the bar keeps your length. The different configurations considered allow extension length is ensured not only in a narrow range of length variation but it is even possible to ensure that no There is some variation. The same invention contemplates the use of this bar in an elevating cage cage where requires adjusting the inclination of the top of the cage to the inclination of the top of the cage to the inclination which imposes the street level.

Description

Telescopic bar and use of said bar for lifting cages

Object of the invention

The object of the present invention is a bar telescopic that allows the regulation of the extension of form safe so that even if the screw tighten or the tightening screws loosen on the bar keeps your length.

The different settings of the bar considered telescopic allow the extension length to be ensure not only in a narrow range of length variation but it is even possible to ensure that there is no variation any.

The same invention contemplates the use of this bar in an elevating cages for boxes where it is required adjust the inclination of the top cover of the cage to the inclination and height imposed by street level.

Background of the invention

There are many applications in which it is it is necessary to make use of extendable bars that allow time of final installation of a device determine the length that it must have.

A simple example of this type of arms is constitutes the extensible arm formed by two tubes, one insert in the other one. In this configuration the outer tube acts as a guide for the inner tube and mutual sliding results in varying degrees of extension. In this case the inner tube does not have to be a tube, it is enough that it is a bar of smaller diameter than the diameter inner outer tube.

Once the extension of the bar is chosen It is necessary to set the extension as definitive. Is known and usual the solution of using a set screw which is nothing but a screw threaded into the outer tube that presses the inner tube or rod in solidarity with each other.

Another known solution is to use tubes, where one is also inserted in the other, in which use is made of Longitudinal grooves matching in one or both tubes.

These longitudinal matching grooves It allows a nut screw set to set relative to each other. This fixation occurs because the screw set nut also press the wall of one tube with respect to the other. To facilitate the screwed together the internal part of the screw assembly nut with the internal bar for example by welding so  Only act on one of them.

The biggest problem in this type of solutions is the result that the screws used are loosen as the frictional force between the bars or tubes external and internal disappears. In this case, if the extendable bar It is supporting a load, the structure collapses.

The present invention proposes a solution that overcome these types of problems even in these conditions, when The screw is loosened.

Description of the invention

The essence of the invention consists of a bar  telescopic formed by two bars, a tubular exterior and a interior not necessarily tubular whose sections can be any as long as the inner bar slides in the guided outside.

At least one of the bars must have a plurality of collisions distributed along its length where Each of them is obliquely disposed.

On the other hand, the other bar has one or more housings that may consist of perforations threaded or similarly by another plurality of colossi. This other collision collection is suitable that you have an inclination opposite.

If by means of a screw we secure a bar with  the other has as many possible fixing points as match points exist between the first plurality of colisos and the accommodations arranged in the other bar.

In the simplest case, when you consider example in the outer tubular bar a plurality of colisos obliques and a single housing in the inner bar, the point of fixation will occur when the accommodation is accessible through from any of the coliseums. If the bars are of circular section and there is the possibility that one bar rotates with respect to the other and the screw is loosened, a bar will only move relative to on the other the section that leads from the position of the threaded stud from the screw to the end of the collision limiting the extension and ensuring retention.

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The reason for this limitation is due to the interruption that exists between colisos; those colossi are not connected to each other.

If the bars are not circular in section but that the section is square there is no possibility of rotation relative.

In this case, when the internal bar has or either several discrete accommodations or several trained accommodations by a plurality of oblique collisions in opposite inclination, the match points are several and can be determined through an adequate choice in its distribution taking the distance between the first plurality of colisos and the second plurality of accommodations.

It is of interest the case in which two of these coincidence points correspond to extreme situations of colossi; in a coliso the outer bar coincides with one end and in the other coliso it occurs in the other extreme position.

Thus, if two screws are used, if these two loosen the combined support in either coliso prevent displacement in the sense of extension of the telescopic bar or in the shortening direction.

There may be additionally matching housings that would allow more screws to be incorporated ensuring the union in operational situation.

Up to this point there has been talk of screws, no However the union is valid using bolts or simple offshoots that have means that prevent the exit of their accommodation.

In this same invention the use of this type of telescopic bars in lifting cages intended for have for example containers. These cages are useful in boxes underground that have garbage and waste containers Recyclable superiorly accessible.

The emptying of these containers requires the cage lift so that the containers are flush with the ground. Once emptied and reintroduced into the cage it returns to lower the cage. The top cover of the cage should match in inclination with the inclination of the surface at the level of Street.

In this invention use is made of these bars telescopic as vertical bars of the cage structure of such that the top cover of the cage structure supports in these bars. Adjusting the extension of the bars allows match the inclination of the street level with the upper deck of the cage so that once descended they coincide and the seat is the right one

The description of said cage is incorporated into the  Detailed description of the invention.

Description of the drawings

This descriptive report is complemented, with a set of drawings, illustrative of the preferred example and never Limitations of the invention.

Figure 1 is a perspective representation  of the telescopic bar of an embodiment.

Figure 2 an example of using the bar of the invention in a lifting cage where only the intermediate cage structure. This same figure includes a detail at the point of entry of the internal tubular body into the External telescopic bar.

Figure 3 is a complete perspective of the lifting cage incorporating the base, the lifting means, the intermediate structure shown in figure 2 and cover superior that must match the street level.

Detailed statement of the invention

An example of execution of the invention in which the bar is constituted by two tubular bodies of square section, a tubular body outside (1) and an inner tubular body (2). The latter (2) is not shown in this view and yes in the following figures. Given that the section is the only degree of freedom that exists between Both bodies (1, 2) is the extension and longitudinal collection.

The inner tubular body (2) ends in a patella (2.3) separated inferiorly by a throat (2.3.1). One (2.3) and another (2.3.1) detail are shown in Figure 1. The ball joint (2.3) will allow a rotation movement at the point of support (6.1) and throat (2.3.1) is a means of fixing the ball joint (2.3) so that it does not leave its housing.

The outer tubular body (1) shows a plurality of colossi (1.1) longitudinally aligned and arranged oblique. In this way it is possible that the upper end of a coliso (1.1) is located at the same height as the end lower of the coliso (1.1) immediately superior. This configuration makes it possible to fix and hold at any extension point of the telescopic bar while maintaining the discontinuity imposed by the use of coliseums (1.1) to favor that when the screw is tightened, the bar will continue maintaining the same degree of extension, or at least in a range as narrow as the length variation imposed by the length of the coliso (1.1) projected in this same direction longitudinal.

For its part, as seen in the detail of figure 2, the internal tubular body (2) also makes use of collisions (2.1) as screw housings fixation, this one not represented.

These second colossi (2.1) are also oblique but the inclination is the opposite.

In this exemplary embodiment, as is shows in this same detail, the intersection between a plurality of colisos (1.1) and another (2.1) occurs at a given point that the inclination between both games of colisos is opposite. Choosing the degree of distance between external colossi (1.1) and internal (2.1) can be achieved, as shown in the detail, at different points with respect to the external coliso (1.1). Be check how the intersection in the upper outer colosus (1.1) it is at the top point of the groove, in the next coliseum (1.1) it occurs at an intermediate point; and, in the following coliso (1.1) the intersection occurs at the bottom of it. Of this mode if the screws loosen, the threaded studs (if they are threaded along their entire length), they lock one bar against another Even if they are loose.

Figure 2 shows the structure (4) intermediate of a lifting cage capable of storing for example containers that are stored under street level in a casket The fact that it is liftable allows the emptying of the Container content in a simple way.

In this intermediate structure (4) they have built-in telescopic bars (1, 2) as described to make the times of vertical bars in the structure and allow act as a cover support (6).

Since they will support the cover (6) the capacity to adjust the extension of the telescopic bars (1, 2) allows you to adjust the height and inclination at which the cover compared to the rest of the cage structure liftable

As a detail, a base is also shown (5) individual for each container that is also adjustable in tilt thanks to its support in traditional grooves (1.2) Longitudinal

Adjusting the roof inclination (6) allows the roof (6) to coincide with the street level when the cage is lowered and housed in the chest while adjusting the inclination of each individual base (5) allows, when raising the cage to be able to take out the containers, each of these bases (5) is also parallel to the level of Street.

Figure 3 shows the complete cage with the upper cover (6), shown separately in the representation graph of vertical bars (1, 2), with seating points (6.1) of each of the ball joints (2.3) not represented because the cover separation (6) has been achieved by eliminating I draw the internal tubular bodies (2).

This represented cage has four bases (5) individual tilt adjustable.

On each side there is an arm (7) of  drive, pneumatic, hydraulic or any other type, which It is the one that allows the cage to be raised when presenting the ends anchored in the cage and on a lower base (9) of support in the solera or earth respectively. To carry out the anchoring of the cage on the ground, the base (9) has some holes (3).

The cage lift is achieved by the drive of the drive arms (7) and guide of some scissor-shaped bars (8) that impose a movement only vertical.

Claims (13)

1. Telescopic bar consisting of at least one outer tubular bar (1) and a movable inner bar (2) guided inside the outer tubular bar (1) characterized in that the outer tubular bar (1) has a plurality of coliseums (1.1) obliques and the inner bar (2) with at least one housing for a screw, bolt, rod or similar fixation accessible through a coliseum (1.1). 2. Telescopic bar according to claim 1 characterized in that the inner bar (2) has a plurality of housings for the screw or the like. 3. Telescopic bar according to claim 2, characterized in that the housings are oblique colossi (2.1) with an inclination opposite to the collision (1.1) of the outer tubular bar (1). 4. Telescopic bar according to claim 3, characterized in that the points of coincidence between the collisions (1.1) of the outer tubular bar (1) and the colossi (2.1) of the inner bar (2) are several and occur at different points with respect to to the grooving of the coliseums (1.1) of the outer tubular bar (1). 5. Telescopic bar according to claim 4, characterized in that at least two points of coincidence between the colossi (1.1) of the outer tubular bar (1) and the colossi (2.1) of the inner bar (2) are opposite ends such that in case of loosening the screws, bolts, stems or similar fixation ensures the non-existence of relative movement between the bars (1, 2). 6. Telescopic bar according to claim 1 characterized in that the section of the bars (1, 2) is circular. 7. Telescopic bar according to claim 1 characterized in that the section of the bars (1, 2) is polygonal. 8. Telescopic bar according to claim 7, characterized in that the section of the bars (1, 2) is square. 9. Use of the telescopic bar according to any one of the preceding claims, characterized in that several telescopic bars are arranged as vertical bars in the intermediate structure (4) of a lifting cage and can be installed in a cassette to support its cover (6) in such a way that the adjustable extension of the bars (1, 2) allows to fix its height and inclination to the inclination of the street level when the cage is lowered and hidden in the box. 10. Use of the telescopic bar according to claim 9 characterized in that the union of each of the arms (1, 2) with the upper cover (6) is carried out by means of a ball joint (2.3). 11. Use of the telescopic bar according to claim 10 characterized in that under the kneecap (2.3) there is a throat (2.3.1) which serves to retain the ball joint (2.3) in its seat (6.1) of the cover (6) . 12. Use of the telescopic bar according to claim 9, characterized in that the arm has lower vertical grooves (1.2) for the adjustment of the inclination of some bases (5) supporting internal cage containers. 13. Lifting cage according to any of the preceding claims characterized in that it is constituted by an intermediate structure (4) with vertical telescopic bars (1, 2) for the support of an upper cover (6) having a base (9) fixed at the bottom ground connected to the base by means of scissor bars (8) for vertical movement guidance, plus lateral actuators (7) for lifting.