IT9020359A1 - MECHANICAL LOCK, AUTOMATICALLY OPERATED, TO KEEP THE SKID SHOE IN POSITION ON THE TRANSPORT BUCKET, ESPECIALLY FOR PAINTING TANKS - Google Patents

Description

DESCRIPTION

The present invention relates to a mechanical lock, with automatic actuation, to keep the shoe in position on the transport arch.

As is known, a problem that is encountered, in particular, in painting tanks and in prohibitive work environments is that inherent in the correct maintenance in position of the skate, or skid, on the transport arm: in fact, this skid must be retained , in its position on the arch, while maintaining the possibility of swinging, without slipping upwards.

The solutions used up to now have not been found to be able to give full confidence,

the aim of the invention is to solve the above problems, realizing a mechanical lock, with automatic activation, specially designed to keep the shoe in position on the transport arch, which allows to carry out the actuation directly from the outside . by means of a simple cam, which gives the possibility to fully automate the entire locking operation.

Furthermore, the mechanical lock in question.

which, due to its peculiar manufacturing characteristics, is able to offer the widest guarantees of reliability and safety in use, is easily obtainable, using commonly available elements and materials on the market and is therefore competitive from economic point of view.

The aforementioned aim, as well as the aforementioned and other aims, which will be better highlighted hereinafter, are achieved by a mechanical lock, with automatic operation, to keep the shoe in position on the transport arch, according to the invention, characterized by the fact that comprising a plate, hinged on the transport arch and provided with a hole, removably engageable with a pin, fixed to the skid, or shoe; elastic means are also provided to selectively hold the plate in a "closed" position, in which it engages with the pin, and in an "open" position, in which it disengages from the pin; means are connected to the plate command, for the passage from one to the other of the aforementioned positions,

Further characteristics and advantages of the invention will become more evident through an examination of the description of a preferred, but not exclusive, embodiment of a mechanical lock.

with automatic operation, to keep the shoe in position on the transport arch, illustrated as an indication, but not limited to, with the aid of the attached drawings, in which:

Figure 1 schematically represents, partially in section, the mechanical lock, seen in side elevation:

Figure 2 is a top plan view of the mechanical lock;

Figure 3 is a side elevation view of the mechanical block, seen in the direction of one side;

figure 4 represents the mechanical block, in lateral elevation, seen towards the other side:

figure 5 is a section taken along the line V-V of figure 1;

Figure 6 represents a section taken along the line VI-V1 of Figure 1.

With particular reference to the numerical symbols of the aforesaid figures, the mechanical lock, with automatic activation, to keep the shoe in position on the transport arch, comprises a plate 1, substantially square-shaped, which is hinged, by means of a pin 2, to the 'transport arch, generally indicated with 3.

In correspondence with the pin 2, control means are connected, consisting of a bracket, made with a rod-shaped element 4, bent substantially into the U

The plate is provided with a hole 5. which can be removably engaged with a pin 6, integrally fixed to the skid 7, for example of a painting plant.

Parallel to the articulation pin 2, the plate supports an auxiliary pin 10. to which the end of a leaf spring 11 is connected, having its other end associated with a counter-pin 12, supported by a counter-plate 13, solidly associated with arch 3.

The plate 1 is movable, in a "closed" position, in which the pin 6 is inserted into the hole 5, realizing a mechanical locking, which allows the rotation of the pin, trapped in the hole of the plate.

In this way, the skid 7, although anchored on the arch 3, has the possibility of rotating, with respect to this, to assume the ascent and descent configurations, along the system.

The plate is held in position by the thrust of the elastic means, constituted by the leaf spring 11, which is in the extended position.

To pass from the "closed" position to the "open" position, the plate 1 must rotate around the pin 2, compressing, in a first section, the leaf spring 11, substantially up to half of its oscillation stroke, period, in which the spring exerts its maximum compression; when the spring passes this point, it exerts a thrust action, which holds the plate in the "open" or "closed" position.

The passage from one to the other position is carried out by means of the control means, consisting of the rod-shaped element 4, which is, in practice, intercepted by a cam, which causes its rotation, for the passage from one position to another. .

The mechanical block described above is advantageously intended to operate in painting tanks and in prohibitive work environments.

This block is of considerable importance, since, during immersion in the painting tanks, it does not allow the pin, trapped in the hole in the plate, to slide upwards, preventing the skid and the body from detaching under the pressure. due to the buoyancy of the body itself.

Also of considerable importance is the safety against the opening of the block, that is against the disengagement of the perforated plate, which is given by the efficiency of the leaf spring, which guarantees the thrust necessary to hold, in a vertical position, or in position of "open", the perforated plate.

The invention thus conceived is susceptible of numerous variations and modifications, all of which are within the scope of the inventive concept.

Furthermore, all the details can be replaced by other technically equivalent elements.

In practice, the materials employed, so long as they are compatible with the specific use, as well as the contingent shapes and dimensions, may be any according to requirements.

Claims (6)

CLAIMS 1. Mechanical lock, with automatic activation, to keep the shoe in position on the transport arch, characterized in that it comprises a plate, hinged on the transport arch and provided with a hole, which can be removably engaged with a pin. fixed to the skid, or skate; elastic means are also provided for selectively holding the plate in a "closed" position or in an "open" position, in which it disengages from the pin; control means are connected to the plate, for the passage from one to the other of the aforesaid positions. 2. Mechanical lock, according to the preceding claim, characterized in that the elastic means consist of a leaf spring. 3. Mechanical lock, according to the preceding claims, characterized in that the leaf spring has its ends, associated with an auxiliary pin, supported by the plate parallel to its own hinge pin. and to a counter-pin, supported by a counter-plate, fixed to the arch. 4. Mechanical lock, according to one or more preceding claims, characterized in that the leaf spring has the moment of maximum compression. in the intermediate zone between the "closed" position and the "open" position. 5. Mechanical lock, according to one or more preceding claims, characterized in that the control means are constituted by a U-shaped rod-shaped element, integrally associated with the hinging pin of the plate; this rod-like element can be engaged by a control cam. 6. Mechanical lock, with automatic actuation, to keep the shoe in position on the transport arch, according to one or more of the preceding claims, all as more fully described and illustrated for the specified purposes.