FR2672578A1 - Safety device for loading and unloading quays - Google Patents

Abstract

Device making it possible to load and unload vehicles in complete safety on quays with special equipment: adjustable ramps, elevating platforms, etc. The system is composed of a steel chock (A) to be placed under the wheels of the vehicle, of safety lights in the form of a torch (E) to be placed on the door of the lorry, of contactors on the system in place (ramp, elevating platform), everything being connected to an electrical cabinet (B) with a siren (C) and flashing lamp (C1) warning of a defect in positioning of the devices (A) and (E).

Description

The subject of the invention is a safety device intended to prevent transporters, when loading or unloading goods, on quays fitted with leveling ramps, or any other type of ramp, either mechanical, hydraulic, electric, from move away from the platform with their truck, while the loading ramp is resting on the rear of the vehicle.

The device has the particularity of fully involving the driver of the vehicle, by installing a light torch, either on the door, the rear view mirror, (or any other point on the vehicle, especially when unloading a trailer), and E plus by placing a shoe under the front of one of the truck's wheels.

 The light torch is composed of a green indicator, a red indicator, and, is connected to an electric unwinder fixed on the outside wall of the quay, and at the other end to an electrical box surmounted by a siren and an indicator light.

The shoe is provided with a contact connected directly to the electrical box, this shoe is made up on top of a movable t ol E mounted on an axis, enabling contact to be actuated when the shoe is engaged on the wheel of the truck, ensuring thus the perfect setting of the vehicle.

The siren and the indicator light have the advantage of being coupled to the contacts of the light torch and the shoe. If 1 driver of the vehicle neglects to have either the torch or the shoe, the siren sounds and the lamp flashes and the lifting of the loading ramp cannot be activated.

During the transhipment of the goods, while the shoe is in place, as well as the light torch, the loading ramp being supported on the rear of the vehicle, if we move: either the shoe or the torch, or the det elements, immediately, the siren sounds and the lamp flashes. The material handler or operator is
immediately warned that one of the devices is no longer in place
He interrupts his work to assess the anomaly, and put back or have the devices replaced, to cancel the siren and the flashing lamp.

In addition, the device is electrically designed to prevent
the action of maneuvering the ramp while the siren sounds and the lamp flashes.

The electrical box is fitted with a double-function P FIS 6 key contact: a so-called "normal" position every
system security functions are in action
For the second position called "maintenance" the key is engaged in the contact thus neutralizing the safety of the shoe, and the siren. The flashing light will always be on when warning the personnel about the danger of handling the ramp without authorization. In the latter
function the key is locked in contact.

The embodiment of the invention is shown by way of non-limiting example in the accompanying drawings.

Figure i shows the shoe fitted with an electro mechanical contact (7) and a movable part (6:>, which when the shoe is under the wheel of the truck comes to bear with the electro mechanical contact (7 :) connected by an electric cable to the box B FI 6.

FIG. 2 represents the light torch E equipped with a contact (11), equipped in the upper part with a bar (14) fixed to said contact by a pivoting axis from the horizontal position to the vertical position, with a green indicator (15), a red indicator (16), and a device for hooking (22) to the door. The light torch hung on its support
FIG 6, near the Bi unwinder, the indicator is green. Attached to 1 door of the truck by the hook (22) the indicator is red.

FIG. 3 represents an electrical device (2) with electro-mechanical contact making it possible to be able to determine the positioning of the mobile part 1). When the mobile part (i :) is in the standby position in the support (4), to electrically control the shoe A said to be under the wheel and the torch hung on the door, the rear view mirror or other elements of the truck.

FIG. 4 represents the loading ramp F with the movable part (1) resting on the platform (3) of the truck. The movable part being removed from its support (4) the electro-mechanical contact adopts an electrical position, such that if you move either the FIG 2 light torch or shoe A
FIG i the siren C sounds and the lamp Ci flashes. To interrupt them, simply replace the FIG i shoe or the FIG 2 torch.

FIG. 5 represents the electrical diagram of the invention equipped with a current transformer 0, medium voltage / low voltage protected by the electrical box of the loading ramp and connected by the wires S of the transformer to the bordier nn represented in the diagram , which will serve as centralization for the connection of the wires
The limit switch (7) d shoe A FIG i is at rest, the current does not pass through contact H of relay D, it cannot supply the control for lifting the ramp F FIS 4 against contact G relay D allows current to flow to supply the green LED (15) which indicates the standby position.

The limit switch (11) of the light torch E FIG 2 green light is at rest, the current does not pass through the contact H of the relay D, it cannot supply the control for lifting the ramp F FIG 4, on the other hand , contact G of relay D, lets current flow to supply the green light (15) which indicates the standby position. The limit switches (7 :) and (11) are in series. The limit switch (7) of shoe A FIG l is switched on, current flows through contact H of relay D to supply the lifting of ramp F FIG 3, the contact lets current flow to connect the red indicator (16) which indicates the operating position. Contact G drops.

The limit switch (11) of the light torch E FIG: 2 red light is at rest, current flows through contact H of relay D to supply the lift of the ramp F FIti 4.

Contact H lets current flow to connect the red light (16) which indicates the operating position. Contact G drops.

If one of the two contacts in series 7 and 11 is not in the service position, the power supply and the control will not be carried out thanks to the connection mentioned above.

 A protective assembly is also provided.

The ramp fig 4 is activated, the flap (1) rests on the platform of the truck (3 :), the limit switch (2), lets the current flow to activate the relay K.

If one of the devices A FIG 1 or L FI is moved from their service position, the contacts M. And N of the relay t :: go up to activate the siren L: and the indicator Ci.

For maintenance or other reasons, it is necessary to be able to activate the ramp without the siren sounding, and without pressing the shoe or the torch being hooked. A key contact neutralizes the limit switches (7) and L 1) by the contacts J, the siren is thus neutralized, but not the flashing lamp which remains in service by the contact
L.

FIG. 6 represents an overall view of the safety device formed by a light torch (E) arranged on the door of the truck, and of a view executed in dotted lines on the support (R), fixed near the electric unwinder intended to receive the light torch when it is out of service, from an electric reel connecting the light torch, both part of the invention, to the electric box (B) equipped with a key contact (P) object of the invention surmounted by a siren (C) and an indicator light (Ci)) of a hot shoe (A.) equipped with an electrical contact directly connected to the electrical box (B). The shoe (A), is formed by a sheet 10, serving as a base, two sheets 18 forming the sides and worked on one side, to match the wheels of the truck, rounded with a curved sheet 6 fixed on the upper part by an axis 5, allowing the sheet 6 to be movable to actuate the contact Z fixed on a rectangular plate
0 O attached to the shoe by two steel screws 1 and connected directly to the electrical cabinet B, controlled by the relay D, of a sheet 8 closing the device on the rear.

Claims (5)

Claims 1) Safety device for loading and unloading docks, characterized in that it consists of a shoe Intended to be placed under the wheels of the vehicle, equipped with an electromechanical contact 7, mounted in series with a contact of the ramp F of said platform and a contact 11 of a torch E, making it possible to determine the blockage leaving from the vehicle , the electromechanical limit switches 7 and 2 are connected directly in an electrical box B, surmounted by a flashing lamp C1, connected in series with a siren C, coupled with the limit switches, and 11, triggering if the light torch E is not attached to the door Lt on the rearview mirror of the truck, or if the shoe r is not under the wheel of the vehicle. 2) Device according to claim 1 characterized in that the shoe fA, is formed by a plate 1, serving as a base, two blades 18 forming the sides and worked on one side, to match the wheels of the truck, rounded with a curved sheet 6 fixed on the upper part by an axis 5, allowing the sheet 6 to be movable to actuate the contact 7 fixed on a rectangular plate 20 attached to the shoe by two steel screws 21, and connected directly to the electrical cabinet B, controlled by relay D, of a sheet 8 closing the device on the rear,  3) Device within claim 1 characterized in that the limit switch 11 of the light torch E is surmounted by a movable bar 14 pivoting from the horizontal position to the vertical position, making it possible to transmit the positioning information to the tins of stroke 7 and 2, at the light signal 15 when the bar is in the vertical position, at the light signal 16 when the bar is in the horizontal position. 4) Device according to claims 1 to @ characterized in that the light torch E has a hook 22 for the @ixation on the rear view mirror or the door of the truck accosted at the quay.  5 Device according to claims and 4 characterized in that it comprises a support fixed near the electric unwinder intended to receive the light torch when it is out of service. 61 Device according to all of claims 1, 3, 4, 5, characterized in that the light torch E comprises a limit switch it equipped with a bar 14 for pivoting from the horizontal position to the vertical position, by an axis serving as attachment to the limit switch 11, surmounted by an indicator light 15, and an indicator light 16 and the hook 7) Device according to all of claims 1 to 6 characterized in that the limit switch 2, of the ramp and of the flap l of said ramp @, is connected with the limit switches 7, 11, the indicators 15 and 16, and the alarms C and C1. 8) Device according to all of claims 1 and 3 to 7, characterized by a key command P has two positions @ixee on the door of the electric cotfret B and equipped with relay and t of a transformer O, transforming the average current low voltage voltage, a protective assembly Q, a siren C for positioning fault of devices A and E, a flashing lamp C1 detecting the positioning fault of devices A and E.