ES2207355A1 - Lifting platform for raising position of one or more people performing operation e.g. painting wall of building has brake unit set above upper base, and locking unit that fixes position of upper base to vertical guidance and support member - Google Patents

Abstract

The lifting platform has an actuating unit (3) that actuates an upper base (2) and includes a cylinder (4). The end (7) of a piston (6) acts on the rod (8) of an articulated parallelogram (9). A vertical guidance and support member (10) is fixed and mounted on a lower base (1). A brake unit (13) is provided above the upper base. A locking unit (21) fixes the position of upper base to the vertical guidance and support member.

Description

Lifting platform.

The present invention patent application consists as indicated in a `` Platform elevator '', whose new construction features, conformation and design fulfill the mission for which specifically has been projected, with maximum safety and efficiency and providing numerous advantages as detailed in the present memory

More specifically, the invention relates to a lifting platform of the type that is commonly used to raise the position of one or more people who must perform a job at a certain height, for example to paint the wall of a building.

The lifting platforms of the state of the technique that for the same purpose have been used so far they consist essentially of a lower horizontal base fixed, a vertically movable horizontal top base and actuation means of said horizontal upper base for raise it to the desired height.

The drive means of the platforms Conventional elevators consist mainly of a hydraulic or pneumatic cylinder acting on bars articulated causing the movement of the upper base with respect to the bottom base.

There is an inconvenience in the use of platforms described and is that the activation of the cylinder requires an additional person, given that the operator who is on the upper base cannot directly drive the cylinder and, in consequently, you need another person to raise or lower the upper base to the desired height.

The invention proposes a new platform lift that can be used for various operations, for example for maintenance and repair of facades or for any other work that requires a person to be in An elevated position.

As will be seen hereafter, with the platform object of the present invention, the operator who is working on the platform that will be described can trigger the same without the need for an additional person to raise or lower the upper base.

The platform according to the invention is of the type described above, that is, comprises a base fixed horizontal bottom, a movable horizontal top base vertically and drive means of said upper base horizontal scrollable.

The particularity presented by this platform elevable lies in the fact that, unlike the means of drive used in conventional platforms, the drive means of the upper base of the platform of the invention comprise a cylinder, the end of whose piston acts on the bar of an articulated parallelogram. In combination with as described, there is a vertical guide and support element that  it is fixedly fixed to said lower base with respect to the which moves the upper base.

The upper base of the platform object of the invention is provided with brake means of movement thereof and locking means that fix the position of said base superior with respect to said vertical guide and support element.

Preferably, said brake means of the horizontal top base movable comprise a movable body constituted by two parallel rollers tilting solidarity of the cited horizontal upper base, which are arranged in a same plane and between the mentioned vertical element of guide and support, of so that the contact of both in its swinging against the vertical guide and support element when actuated brake the base horizontal upper by friction.

Moreover, it is expected that the brake means of the horizontal upper base include a pedal consisting of an elongated plate. One end of said elongated plate it is integral with said movable body, the free end remaining adapted to be operated by the operator's foot, so that when stepping on said plate, the upper base is stopped, being able to Move vertically when released.

Advantageously, the locking means that fix the position of the upper base with respect to the vertical element of guide and support comprise a latch that locks the pedal in permanent brake position.

With a lifting platform like the one described above obtains an effective means of elevating the operator without the need for another person on the ground that drives the upper base. the same Operator ascends or descends at your convenience by removing your foot from the pedal or stepping on it to lock the position and work comfortably.

In addition to the advantage of having a platform self-governing lift, this is of a configuration extremely simple, which does not require complicated mechanisms lifting mechanics For this reason too, the platform of the invention is much lighter, among other things, because no There is no engine or any other heavy mechanism.

The lifting platform of the present invention It also has the advantage that it is very quiet and, In addition, fast operation. In this regard, it has been proven that the platform lifting or lowering operations are perform in times of the order of 2s, noticeably faster than Conventional platforms that takes between 10 and 15s.

The constructive simplicity of the platform described is also demonstrated by the absence external sockets of Air and electricity.

The characteristics and advantages of the lifting platform object of the present invention will result more clear from the detailed description of an embodiment preferred of the same that will be given, from now on, by way of non-limiting example, with reference to the accompanying drawing, in which has been schematically illustrated an embodiment of a lifting platform according to the invention. Said drawing corresponds to a front elevation view of the platform of the invention with the upper base in a substantially position elevated to be able to appreciate the diverse components that integrate the same.

The different elements are cited below described in the attached figure:

(one)

bottom base fixed horizontal;

(two)

upper base horizontal scrollable;

(3)

means of upper base drive;

(4)

cylinder;

(5)

deposit of expansion;

(6)

piston;

(7)

end of piston;

(8)

bar;

(9)

parallelogram articulate;

(10)

vertical element of guidance and support;

(eleven)

vertical bars parallel;

(12)

Lower end of parallel vertical bars;

(13)

means of Brake;

(14)

moving body of the brake means;

(14 to)

guide roller of the mobile body;

(14b)

guide roller of the mobile body;

(fifteen)

roller swingarm;

(16)

roller swingarm;

(17)

rods transversal;

(18)

elongated plate -brake pedal-;

(19)

end of the platen;

(twenty)

end of the platen;

(twenty-one)

means of blocking;

(22)

latch;

(2. 3)

bomb of air;

(24)

table of pesos;

(25)

core wheels lower; Y

(26)

core wheels lower.

The platform of the preferred embodiment to be describes by way of non-limiting example in relation to the figure which is attached herein is constituted by a base fixed horizontal bottom designated by (1) and a top base horizontally scrollable vertically designated by (2). A means drive (3) cause the movement of the upper base horizontal (2).

The drive means (3) of the base upper (2) of the platform are constituted by a cylinder of compressed air (4) equipped with an expansion tank (5). The compressed air cylinder (4) incorporates the corresponding piston (6), whose end (7) acts on the bar (8) of the parallelogram articulated (9).

The platform described is provided also of a vertical guide and support element (10) that can take the form of a vertical staircase consisting of two parallel vertical bars (11) and a plurality of bars transversal as steps. The vertical guide element and support (10) is fixedly mounted at its lower end (12) to the bottom base (1).

The upper base (2) of the platform is equipped  of brake means (13) to block the position thereof which comprise a mobile body (14) consisting of two rollers  tilting parallels (15, 16) joined by respective rods transversal (17). The mobile body (14) is integral with the base horizontal top (2) and moves with it aided by lower guide rollers (14a, 14b).

The parallel tilting rollers (15, 16) are  arranged in the same plane and are mounted between the bars (11) of said vertical guide and support element (10).

There is also a pedal consisting of a elongated plate (18), one of whose ends (19) is integral with the mobile body (14). The opposite end (20) is adapted to be operated by the operator's foot, so that by stepping on the plate (18), the upper base (2) is braked because the rollers (15, 16) are in contact in their tilting against the bars (11) of the vertical guide and support element (10), braking the base (2) by friction. Raising the foot of the pedal deck (18), the upper base (2) is released being able to move vertically.

Locking means (21) are also provided that fix the position of the upper base (2) with respect to the element vertical guide and support (10). Said blocking means (21) they comprise a latch (22) that locks the pedal in the position of permanent brake

The operation of the lifting platform is very easy. Starting from an initial position in which the base upper (2) is near the lower base (1), the operator climbs on top of said upper base (2) and removes the latch (22) to allow the upper base (2) to rise At this point, compressed air (about 3 atmospheres to elevate an operator or 5 atmospheres to elevate to two) raise the base (2) with the help of the fixed ladder (10) on which the operator rests to allow the ascent of the base (two). Upon reaching the desired height, the operator steps on the plate (18) and the brake means (13) act as a clamp that catches the bars (11) of the ladder braking the base (2). In this point, the operator can do his job comfortably while maintaining his standing on the plate (18) of the brake pedal and releasing it if you need to lower or activate the locking means (21) with the in order to guarantee a permanent fixed position.

When the operator wishes to descend, remove the latch (22), if you have activated the locking means (21), and lift slightly the foot of the plate (18) of the brake pedal which causes the lower base (2) to fall due to the weight of the operator. The operator can also help himself with the ladder (10) to descend

If you want to increase the capacity of the lifting platform, more pressure is applied to the cylinder (4) by means of an air pump (23) according to the weights to lift reflected in a table (24).

The bars (11) of the ladder (10) can be formed by one or more removable sections to facilitate the platform transport and storage. In this sense, it they also have wheels (25, 26) in the lower part of the base (1).

Described sufficiently what is the present invention in correspondence with the attached drawing, is understands that any modification may be introduced therein of detail that is deemed convenient as long as they are not altered the essential characteristics of the invention, summarized in the following claims.

Claims (4)

1. Lifting platform comprising a fixed horizontal lower base (1), a horizontally movable horizontal upper base (2) and means (3) for driving said upper base (2), characterized in that said means (3) for driving the upper base (2) comprises a cylinder (4), the end (7) of whose piston (6) acts on a bar (8) of an articulated parallelogram (9), and in which it comprises a vertical guide and support element (10) which is fixedly mounted to said lower base (1) with respect to which the upper base (2) is displaced, said upper base (2) being provided with brake means (13) thereof and means for locking (21) that fix the position of said upper base (2) with respect to said vertical guide and support element (10). 2. Lifting platform according to the first claim characterized in that said brake means (13) of the movable horizontal upper base (2) comprise a movable body (14) constituted by two parallel tilting rollers (15, 16), said movable body being (14) integral with said horizontal upper base (2), said tilting rollers (15, 16) being arranged in the same plane and between said vertical guide and support element (10), so that the contact of both of them in its tilting against the vertical guide and support element (10) when actuated brake the horizontal upper base (2) by friction. 3. Lifting platform according to the 2nd claim characterized in that the brake means (13) of the horizontal upper base (2) include a pedal constituted by an elongated plate (18), one of whose ends (19) is integral with said body movable (14), the free end (20) being adapted to be operated by the operator's foot, so that when said step (18) is pressed, the upper base (2) is braked, being able to move vertically when releasing said plate 18) of the pedal. 4. Lifting platform according to any of the preceding claims, characterized in that the locking means (21) that fix the position of the upper base (2) with respect to the vertical guide and support element (10) comprise a latch (22) which Lock the pedal in permanent brake position.