ES1256375U - Manual traction scaffold (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Manual traction scaffold, consisting of a steel chassis (1) with four wheels (9), two of which are supported by a front axle (8), which has a clutch that meshes with the stem (6) of the steering wheel (7), which has a conical gear that transmits the forward movement to the scaffold, and two other directional rotating wheels (9), attached to two forks (5), attached to the directional stem (10), which allows movement turning the scaffold through a rudder (11). The steering wheel (7) and the rudder (11) are accessible from the work platform (16). It also has a braking and locking mechanism for its position and rotation (12). (Machine-translation by Google Translate, not legally binding)

Description

DESCRIPTION

Manual traction scaffold

The present invention refers to a directional manual traction scaffolding for work at different heights thanks to its adjustable work platform. Thanks to its traction operation, movements are made easier for the operator. It is composed of a rolling structure with four aligned wheels. The front axle has a manual operation through a steering wheel that allows movement. At the rear it has its directionally rotating wheels, which makes it easier for the worker to turn the scaffold thanks to the incorporated rudder.

Technical sector

This invention has its application within the industry dedicated to the manufacture of equipment, devices and elements applicable in agriculture in general and scaffolding in particular.

Background of the invention

The use of scaffolding has not always been linked to agriculture. Stilts or ladders were used for work at height, but the risk of walking with stilts on sand, added to the difficulty that it entailed, allowed the introduction of scaffolding for work at a height of greenhouse crops.

The scaffolds allow work at different heights, in addition to complying with all preventive measures for the safety of the operator in his workplace, thanks to the safety rails. The work is easier and faster, and allows the transport of the tool and the fruit with the operator himself.

Manual scaffolds were very well accepted in agriculture, but to move them, the operator had to get off and push it or be pushed by another person, which slowed down agricultural work.

With this manual traction scaffold, these drawbacks are eliminated, since the operator will be able to move around the work area on the platform, without having to get off it.

Explanation of the invention

The manual traction scaffold is in itself a novelty within its field of application, since it facilitates work at different heights, thereby achieving an improvement in the conditions for the operator.

More specifically, it is made up of a rolling structure with four wheels aligned on two lateral axes, one of them made up of two forks, which allow the rear wheels to rotate, as they are attached to the rudder by means of a gear that drives lateral movement.

The front axle has a pinion that meshes with a flywheel that gives traction to the scaffold, allowing movement.

The chassis is made of steel, covered by protective paint.

In the upper part of the structure there is a work platform, with an access ladder at the back of the scaffolding composed of removable steps, and anti-fall safety rails, adjustable in height, as well as the traction wheel.

The lower part is made up of a support frame from which four profiles emerge vertically at the corners that support the work platform. Between the vertical profiles there are mobile crossbars that constitute the rungs of some access stairs to the work platform. Said steps consist of an improvement characterized by the arrangement of a metallic tubular frame in parallel and vertical positioning, with selectively adjustable horizontally parallel steps. The vertical supports have grooves on their front face that allow the coupling of the mobile steps, which retain the rotation. The rungs are attached to the vertical supports by means of two tongue and groove couplings. Both the vertical support and the steps have a hole into which a safety pin is inserted, which fully secures the steps to the support.

The scaffold also has a locking braking mechanism in the upper part of the traction wheel.

The steering wheel drives the wheels through a bevel gear attached to the axle of the front wheels.

Brief description of the drawings

To complete the description that is being made and in order to help a better understanding of the characteristics of the invention, a series of sheets of plans is attached to the present specification, in which the following is represented:

Figure 1- Shows an isometric view of the manual traction scaffold.

Figure 2- Shows a side view of the manual traction scaffold.

Figure 3- Shows a front view of the manual traction scaffold.

Figure 4- Shows a plan view of the manual traction scaffold.

Figure 5- Shows a detailed view of the steering wheel and rudder brake of the manual traction scaffold.

Preferred embodiment of the invention

The scaffold is basically supported on a steel chassis (1) covered by protective paint. Said chassis is made up of a lower support platform, a traction axle (8), or front axle, which has a bevel gear that transmits the forward movement to the scaffold, and two forks (5), which hold the Directional swivel wheels (9), attached to the steering stem (10) that allows the turning movement of the scaffold through a rudder (11).

The steering wheel (7) and the tiller (11) are accessible from the work platform (16) and can be locked by means of two directional braking and locking mechanisms (12). Both the rudder (11) and the steering wheel (7) mentioned are height adjustable.

A front ladder (3) and another rear ladder (2) with removable steps (4) emerge vertically from the chassis that facilitate the incorporation of the operator to the work platform (16), which is supported by said ladders. These stairs are arranged joined by some braces (14) that keep them vertical. It also has safety rails (13) to prevent the worker from falling.

The steering wheel stem (6) has a bevel gear in the lower part that engages with the traction shaft (8), which makes the scaffold move forward and backward according to the rotation of said steering wheel (7).

To steer the scaffold, the rear wheels (9) are attached to a pair of forks (5), which in turn are attached to the tiller (10) by means of chain engagement (15). The operator is in charge of choosing the direction of rotation by using the rudder (11).

The brake or lock (12) of the manual traction scaffold is based on a locking clamp, which prevents the steering wheel (7) from turning, preventing the advance of the machine.

Another lock (12) on the rudder (10), allows the scaffold to move without variations in the trajectory.

Claims (6)

1. Manual traction scaffold, consisting of a steel chassis (1) with four wheels (9), two of which are supported by a front axle (8), which has a clutch that meshes with the stem (6) of the steering wheel ( 7), which has a bevel gear that transmits the forward movement to the scaffold, and two other directional swivel wheels (9), attached to two forks (5), attached to the directional stem (10), which allows movement turning the scaffold through a rudder (11). The steering wheel (7) and the rudder (11) are accessible from the work platform (16). It also has a braking and locking mechanism for its position and rotation (12). 2. Manual traction scaffold according to claim 1, characterized in that said equipment is made up of a lower support platform (1), a transmission shaft (8), and a shaft made up of forks (5) which, attached to the tiller (10) by means of a chain (15), allow the scaffold to rotate. 3. Manual traction scaffolding according to claim 2, characterized in that from said lower platform two ladders emerge vertically, one front (3) and one rear (2), which support the work platform (16) . Between the rear ladder (3) there are some crossbars that constitute the removable steps (4) that give access to the work platform (16). The scaffold has two safety rails (13) and tie rods (14) that keep the stairs (2) and (3) vertical. 4. Manual traction scaffold according to claim 3, characterized in that the rear ladder (2) has grooves on its front face, which allow the coupling of mobile steps (4), which are designed as such that they retain the spin. The steps are attached to the vertical supports by means of two tongue and groove couplings, horizontal variants of these components being available, freeing or blocking the passage of personnel. Both the vertical support and the steps have a hole into which a safety pin is inserted, which fully secures the steps to the support. 5. Manual traction scaffold according to claim 4, characterized in that the work platform (16), the safety rail (13), the steering wheel (7) and the rudder (11) are adjustable in height. 6. Manual traction scaffold according to claim 5, characterized in that the rudder (11) and the steering wheel (7) are locked by means of a locking clip (12), to prevent the forward movement and rotation of the scaffold.