FR3049559A1 - CHARGING HANDLING TROLLEY, IN PARTICULAR FOR ORDER PREPARATION - Google Patents

Abstract

Load handling trolley (1) comprising a rolling frame (2) equipped with a plate (3) The plate (3) is provided with a stop (19) on the front end (12) of the chassis (2). ) movable between an active position in which said stop (19) at least partially closes the end of said plate (3) and an inactive position, wherein said stop (19) releases the end of the plate (3), the carriage ( 1) is equipped with a retractable step (13) mounted on the rear end of the chassis (2) rolling, movable sliding between a retracted position, wherein said step (13) extends at least partially under the plate (3). ), and an extended position, in which said step (13) extends projecting from the rear end (11) of the chassis (2) rolling, and at least one of the wheels (6) support the ground of the chassis (2) is a drive wheel equipped with a motor associated with a control system configured to control the operation of the engine according to the positions of the stop (19) of the plate (3) and the step (13).

Description

FIELD OF THE INVENTION The invention relates to a load handling truck, in particular for the preparation of orders.

It relates more particularly to a load-handling trolley comprising a rolling frame equipped with at least one plateau, said horizontal, load support, whose load-bearing surface is formed at least partially of parallel-axis rollers rotatably mounted around it their longitudinal axis in a direction transverse to the front / rear direction of the rolling frame, the rolling frame being equipped at one of its ends said rear of a member, such as a handle truck.

PRIOR ART The order preparation activity has developed in recent years. Generally, the order preparation is carried out using a load handling trolley, with driver walking behind the trolley. The carriage is pushed by the driver of the carriage, which moves the carriage between aisles lined with shelves exposing loads. During its movements in the aisles, the driver of the truck takes the charges taken from the shelves and loading crates arranged on the horizontal load bearing tray of the carriage. Charges taken are distributed in the boxes, each box corresponding to an order to be prepared. Once the set of orders corresponding to the boxes prepared, the boxes are removed from the carriage and usually transferred directly to a conveyor belt, rolling boxes on said carriage transport tray of the carriage.

This preparation of order proves tiring for the driver of the truck, who must both push his truck and take loads in the aisles. In addition, some loads can be placed at high heights in the aisles, sometimes requiring the driver of the truck to climb the aisle rack to reach the loads in height, the risk of falling. PURPOSE AND SUMMARY

An object of the invention is therefore to provide a carriage of the aforementioned type, the design of which facilitates the task of the driver and reduce muscle fatigue, without compromising its safety. For this purpose, the subject of the invention is a load-handling trolley, in particular for order preparation, said trolley comprising a rolling frame equipped with at least one said horizontal load-bearing platform whose load-bearing surface is formed. at least partially of rollers with parallel axes mounted free to rotate about their longitudinal axis, said rolling frame being equipped at one of its said rear ends with a member, such as an operating handle of the carriage, characterized in that that the plate is provided, on the front end side of the rolling frame opposite the rear end, of a stop movable between a so-called active position in which said stop closes at least partially an end of said plate and a so-called inactive position, wherein said abutment releases said end of the plate, for unloading said plate by sliding loads on the support surface of said p slider, in that the carriage is equipped with a retractable step mounted on the rear end of the rolling frame, movable sliding in one direction, parallel to the forward / reverse direction of the rolling frame, and perpendicular to the longitudinal axis of the rollers of the plate, between a retracted position, in which said step extends at least partially under the plate, and an extended position, in which said step extends projecting from the rear end of the rolling frame, and in that at least one of the support wheels on the ground of the rolling frame is a so-called driving wheel equipped with a drive motor in rotation of the wheel associated with a control system, said engine control system being configured to control the operation of the engine at least according to the positions of the abutment of the plate and the step to avoid any self-propelled movement of the carriage in the non escamo position step of the step and not active of the stop of the plate.

The self-propelled movement of the truck prevents the driver from having to push his cart constantly, which reduces his muscular fatigue. The presence of a step allows him to access loads located high in the shelves along the aisles. The presence of a stop at the end of the plate makes it possible to avoid any untimely rolling of the crates on the tray, and their fall from the tray.

The configuration of the control system of the drive motor in rotation of each support wheel ground support of the truck avoids running the engine, and thus to control the stopping of the motor in the non-retracted position of the step and not activates the abutment of the tray, that is to say outside the retracted positions of the step and activates the abutment of the plate so that any risk of injury to the driver of the carriage resulting from a movement of the carriage while the driver is on the step, is prevented.

According to one embodiment of the invention, the or at least one of the driving wheels of the rolling frame is a wheel, preferably non-steerable, rotatably mounted about an axis perpendicular to the load bearing plane of said plate.

According to one embodiment of the invention, the or at least one of the driving wheels of the rolling frame is coupled to the rolling frame via a clevis coupled with play to said rolling frame.

The game is oriented in a direction perpendicular to the load bearing surface of the tray. This game allows the drive wheel to match the variations of soil profile, without affecting the operation of the drive wheel.

According to one embodiment of the invention, the operating member of the carriage is a rotary handle with a speed variation handle function of the speed of rotation of the driving motor of the or each driving wheel.

According to one embodiment of the invention, the carriage comprises, interposed between the load support plate and a portion of the rolling frame, a mechanism preferably of the driving scissors moving up and down the load support plate.

The possibility of controlling the height of the load-bearing platform again makes it possible to reduce the muscular fatigue of the driver of the carriage by positioning the load-bearing platform at the height of the driver's arms.

According to one embodiment of the invention, said abutment of the mobile charge support plate between an active position and a so-called inactive position, is formed by a pivoting rim of the load support plate, said rim of the load support plate being mounted to pivoting about an axis parallel to the longitudinal axis of the rolls of the tray, between a raised position, wherein said rim closes the end of said tray, and a lowered position, wherein said rim releases the end of the associated tray, for unloading said tray by sliding the load on the support surface of said tray, and the carriage comprises a releasable locking member of the flange in the raised position.

According to one embodiment of the invention, said carriage comprises a drive member moving the step between the retracted and exit positions and a releasable locking member of the step in the retracted position on the one hand, and in the extended position on the other hand.

According to one embodiment of the invention, the motor is an electric motor and the engine control system comprises at least two position detection members, one for detecting the retracted position of the step and the other for detecting the active position of the stop, and a control unit and said control unit is configured to control the motor according to the data provided by said position detection members.

According to one embodiment of the invention, said control unit is configured to control the running of the motor in the active positions of the stop and retracted step and stopping the engine in the inactive position of the stop or in the non-retracted position of the step, that is to say when the stop is not in the active position or the step is not in the retracted position.

According to one embodiment of the invention, said control unit is an electronic and / or computer unit and comprises at least one processor.

BRIEF DESCRIPTION OF THE DRAWINGS The invention will be better understood on reading the following description of exemplary embodiments, with reference to the appended drawings in which: FIG. 1 represents a perspective view of a handling trolley according to FIG. invention, in the retracted position of the step and activates the stop. - Figure 2 shows a perspective view of a truck according to the invention, in the out position of the step and activates the stop. FIG. 3 represents a perspective view of a handling trolley according to the invention, taken at another angle, in the inactive position of the stop, FIG. 4 represents a perspective view taken from below of the handling trolley; .

DETAILED DESCRIPTION

As mentioned above, the carriage 1 of the invention is generally a driver carriage walking behind the carriage. This carriage 1 can be used for the preparation of orders, but not exclusively, and circulates in this case along aisles equipped with shelves exposing the loads that may constitute the controls.

This carriage 1 comprises a chassis 2 said rolling, resting to itself via wheels 6. This chassis 2 rolling is equipped with a so-called horizontal tray 3 load support. Generally, in the case of an application to the order preparation, said plate 3 is intended to support parallelepiped boxes whose top is open, each box corresponding to a command. Thus, the operator can simultaneously prepare several commands.

The chassis 2 rolling is here formed of a so-called lower horizontal rectangular frame forming the base of the chassis. This frame rests on the ground by means of four non-driving wheels 6, preferably directional, that is to say mounted free to rotate about a vertical axis perpendicular to the load bearing surface of the plate 3, and a driving wheel 6, to allow the realization of a self-propelled carriage. Of course, the carriage could have, equivalently, include several driving wheels, without departing from the scope of the invention.

This additional driving wheel 6 is mounted preferably fixed in rotation about a vertical axis perpendicular to the load bearing surface of the plate 3. This driving wheel 6 is equipped with an electric motor 7 driving rotation of the wheel 6 motor associated with a control system 8, 9.

This control system is configured to control the operation, in particular the on / off state of the motor 7. The design detail of the control system 8, 9 will be described below,

The frame further comprises two uprights resting, by their lower end, on the lower frame and near the so-called rear corners of said lower frame.

To enable an orientation in rolling displacement of the truck, the chassis 2 rolling is equipped at one of its ends said rear 11, a member such as a handle of the carriage 1.

In the example shown, this maneuvering member 10 is formed by a horizontal handle which extends parallel to the load bearing plane of the plate 3. This handle is arranged along a shelf 22, the opposite edge of which is coupled to chassis amounts 2 rolling. This operating handle 10 extends under said shelf 22. Said shelf 22 is adjustable in height. At least a part of this handle 10 is a rotating part, to allow said handle to constitute a handle for speed variation of the speed of rotation of the motor 7 driving in rotation of the driving wheel 6 of the chassis 2 rolling. This handle is therefore a control handle of the advance speed of the carriage 1. The detail of such an acceleration handle will not be described in detail, because it is well known to those skilled in this art.

The rolling chassis 2 may further comprise, at its rear end 11, an additional crossbar connecting two uprights, this additional crossbar forming a hooking bar (s) trash container (s) 21 and (s) removably on said chassis 2 rolling.

The rolling chassis 2 further comprises, at its rear end, a step 13 retractable, mounted to slide in a direction perpendicular to the longitudinal axis of the rollers 5 of the plate 3, between a retracted position in which said step 13 s' extends at least partially under said plate 3, and an extended position in which said step 13 extends projecting from the rear end 11 of the chassis 2 rolling.

For the sliding mounting of the step 13 on the chassis 2 rolling, slides are provided at the bottom frame of the chassis 2 rolling along the longitudinal members of the lower frame.

To allow the passage of the step 13 from one position to another, said carriage 1 comprises a handle 14 for moving the step 13 between the retracted and the retracted positions and a lock unlockable member 13 of the step 13 in the retracted position on the one hand, and in the outward position on the other.

In the example shown, the handle 14 for moving the step 13 has the shape of an L-shaped lever pivotally mounted about an axis parallel to the longitudinal axis of the rollers of the lower plate 3. One branches said first branch 141, L extends projecting from the load bearing surface of the step 13 and forms the gripping portion of the drive handle in displacement of the step 13. The other branch, said second branch 142 , the lever carries said locking member.

The second leg 142 of the lever is bent at its free end to provide a finger forming the locking member of the step 13 in the retracted position or exit of the step 13 and the chassis 2 rolling comprises at least a first hole 16 and a second hole 17. The locking member 15 is inserted in the first bore 16 in the output position of the step 13 and in the second bore 17 in the retracted position of the step 13 and is adapted to pass from the retracted position in one of the first or second bores at a position exiting one of the first or second bores by pivoting the lever against return means 18 tending to return the lever to an insertion position of the locking member in a piercing chassis 2 rolling.

In the example shown, the first and second holes are formed in the lower frame of the rolling frame. The return means 18 are, in turn, formed by a spring wound around the pivot axis of the L-shaped lever constituting the handle 14. The operation of the handle 14 and its unlocking are illustrated in Figures 1 and 2.

Thus, in the output position of the step, it is sufficient to pivotally pivot towards the rear of the carriage the operating handle 14, as shown in Figure 2, to unlock the step before sliding the step by pushing up to retracting the step under the trolley tray (see Figure 1). The release of the handle 14 causes the locking of the step and consequently the immobilization of the step in the retracted position. The unlocking of the step for the exit of the step is done in a similar way.

The load bearing surface of the carriage plate is, for its part, formed at least partially of rollers 5 with parallel axes mounted free to rotate about their longitudinal axis extending in a direction transverse to the front / rear direction of the chassis 2 rolling. These rollers 5 allow easy sliding movement of the boxes on the surface of the tray for loading or unloading crates of the tray.

To allow the boxes to be securely held on the surface of the plate 3, the plate is provided with a stop 19 movable between a so-called active position in which said stop 19 at least partially closes the end of said plate and a so-called inactive position, in which said stop 19 releases the end of the plate 3, for unloading said plate 3 by sliding the charges on the support surface of said plate 3.

In the example shown, the plate 3 is a flanged plate provided, on the front end side 12 of the rolling frame 2 opposite the rear end 11, of a pivoting rim 19 acting as a stop, This pivoting rim 19 is mounted at pivoting, about an axis parallel to the longitudinal axis of the rollers 5 of the plate 3, between a raised position, in which said flange 19 closes the end of said plate 3, in a lowered position, in which said flange 19 releases end of the plate 3, for unloading said plate by sliding loads on its support surface of said plate. The carriage 1 further comprises an unlockable unlocking member 20 of the flange 19 in the raised position.

The flange can be pivoted by the presence of a hinge connecting the flange to the rest of the tray. The flange locking member (s) 19 in the raised position may be formed by simple spring-loaded locking fingers which fit into holes, the finger (s) and hole (s). ) being indifferently arranged one or on the rim, the one or more (s) on the associated plate.

It is therefore necessary for the operator to lower the flange 19 which extends parallel to the longitudinal axis of the rollers 5 and which is disposed at the front end of the chassis 2 rolling before discharging the loads such as than crates on the board.

In the example shown, the horizontal platform 3 load support is a lift plate. For this purpose, the carriage 1 comprises, interposed between the plate 3 load support and a portion of the chassis 2 rolling, a mechanism 4 preferably of the scissor drive type moving up and down the plate 3 load support. This lifting mechanism is formed of two pairs of arms articulated in cross, each forming a pair of scissors disposed between the plate 3 load support and the base of the chassis 2 rolling. One of the free ends of the arms of a pair of scissors is slidably coupled to the tray, while the other end of the arms of a pair of scissors is slidably coupled to the lower frame or rails carried by the lower frame, said rails extending parallel to the longitudinal members of the lower frame.

A jack is interposed between the base of the chassis 2 rolling and plateau, to allow the pivoting movement and sliding of said arms for a rise or descent of the load support plate, in a manner known per se. The movement up and down the tray can be controlled from a command also disposed at the handle 10 of the carriage 1.

The driving wheel 6 of the carriage 1 is coupled to the chassis 2 rolling by means of a yoke 24 coupled with a game to said chassis 2 rolling. The yoke 24 may affect the shape of a plate to the wheel upright. The game is obtained using an elastically deformable means, such as a spring, disposed between the yoke 24 and the chassis 2 rolling. This means 25 elastically deformable allows a displacement of the yoke in a direction perpendicular to the load support plane, in the sense of an elevation by bringing the plate 3 load support and the return of the yoke in the lower position, that is that is to say in the direction of a spacing of the plate 3 load support. Thus, the driving wheel 6 can match the variations of the ground profile, without the advance of the carriage being disturbed.

To enable the driving wheel 6 to drive in rotation, the engine control system 8, 9 which is configured to control the operation of the engine 7 at least as a function of the position of the stop 19 of the plate 3 and the step 13 to prevent any self-movement of the carriage 1 in the non-retracted position, that is to say when the step 13 is not in the retracted position, the step 13 and in the non-active position of the stop 19 of the plate 3, c ' that is to say when the stop 19 of the plate 3 is not in the active position, comprises a control unit 8 and at least two position detection members 9. One of the position detection members 9 is a member for detecting the retracted position of the step 13, and the other member 9 for detecting the position is a member for detecting the active position of the stop 19.

Each detection member 9 is for example a position switch having two electrical states. The detection member of the active position of the stop 19 thus has two electrical states, depending on the position of the stop. One of the electrical states corresponds to an actuated state of said switch, when the rim constituting the abutment bears on the switch, in the raised position of the rim corresponding to the active position of the stop. The other state, called the rest of the contactor, corresponds to the state of the contactor when the rim constituting the stop is not resting on the contactor, that is to say in the lowered position of the flange corresponding to the inactive position of the stop. A return spring tends to return the contactor in this state of rest.

In the same manner, the position detection member of the step in the retracted position is a position switch having two electrical states, depending on the position of the step, and corresponding one, to a state actuated, when the step is resting on the switch in the retracted position of said step, the other, in a state of rest, when the step is in the extended position, that is to say is not in contact with the contactor equipping the chassis 2 rolling , said contactor being recalled in the state of rest by a return spring.

These detection members 9 are therefore positioned at appropriate locations of the rolling chassis 2 or the plate 3. The control unit 8 is an electronic command control control unit, in fact, generally, the control unit 8 is an electronic and / or computer unit and preferably comprises at least one processor. Said control unit 8 is therefore configured to control the running of the motor 7 in the active position of the stop 19 and retracted step 13 and the stopping of the motor 7 in the inactive position of the stop 19 or in the non-retracted position of the step 13 .

The signals supplied by the contactors are therefore addressed and constitute the inputs of the control unit. Thus, when the signals sent by the detection members correspond to actuated states of the two detectors, the operating state of the motor is controlled by said control unit. All other pairs of signals formed by the pair of contactors control the stopping of the motor.

It should be noted that when the expression "the control unit is configured for" is used, it means that the processor, possibly associated with a working memory, includes instructions for performing the action. Thus, the engine is stopped, that is to say the electrical control circuit of the engine is open, in the inactive position of the stop 19 and not retracted from the step 13, while the engine is at the operating state, that is to say that the electric control circuit of the motor is closed, in the active position of the stop 19 and retracted foot step 13,

Thus, the control system allows switching of the engine between the on and off states, depending on the position of the step and the stop 19. This design of the control system ensures optimal use of the step without risk of falling to the driver. It also makes it possible to prevent the carriage from moving in the inactive position of the stop 19, at the risk of seeing loads rolling on the load transport tray 3, and falling.

Of course, when the engine is stopped, the rotation of the rotating part of the operating handle does not affect the motor, and therefore the movement of the carriage. The driver of the truck must imperatively store the step 13 in the retracted position and have the stop 19 in the active position if it wishes to control the advance of the carriage from the rotating part of the handle 10 maneuvering.

Claims (10)

1. trolley (1) for handling loads, in particular for the preparation of order, said carriage (1) comprising a chassis (2) rolling equipped with at least one plate (3) said horizontal load carrier whose support surface of load is formed at least partially of rollers (5) with parallel axes mounted free to rotate about their longitudinal axis, said chassis (2) rolling being equipped at one of its ends said rear (11) of a member (10). ), such as a handle for operating the carriage (1), characterized in that the plate (3) is provided with the front end (12) of the chassis (2) opposite the rear end (11), an abutment (19) movable between a so-called active position in which said abutment (19) at least partially closes an end of said plate (3) and a so-called inactive position, wherein said abutment (19) releases said end of the plate ( 3), for unloading said plate (3) by sliding loads on the support surface of said plate (3), in that the carriage (1) is equipped with a retractable step (13) mounted on the rear end side of the chassis (2) rolling, slidably movable in one direction, parallel in the forward / backward direction of the chassis (2) rolling, and perpendicular to the longitudinal axis of the rollers (5) of the plate (3), between a retracted position, wherein said step (13) extends at least partially under the plate (3), and an extended position, in which said step (13) projects from the rear end (11) of the rolling chassis (2), and in that at least one of the wheels (6) for supporting the chassis (2) on the ground is a so-called driving wheel equipped with a motor (7) for rotating the wheel (6) associated with a control system (8, 9), said motor control system (8, 9) being configured to control operation of the motor (7) at least in operation ion of the positions of the stop (19) of the plate (3) and the step (13) to avoid any self-propelled movement of the carriage (1) in the non-retracted position of the step (13) and inactive of the stop (19) of the plate (3), 2. trolley (1) for handling loads according to claim 1, characterized in that the or at least one of the wheels (6) driving the chassis (2) rolling is a wheel, preferably non-director, mounted fixed to rotation about an axis perpendicular to the load support plane of said plate (3). Load-handling trolley (1) according to one of the preceding claims, characterized in that the or at least one of the driving wheels (6) of the rolling chassis (2) is coupled to the chassis (2) via a yoke (24) coupled with a game to said chassis (2) rolling. 4. trolley (1) for handling loads according to one of the preceding claims, characterized in that the member (10) for maneuvering the carriage (1) is a rotary handle with a function of speed variation of the speed handle rotating the motor (7) driving the or each wheel (6) drive. Load-handling trolley (1) according to one of the preceding claims, characterized in that the carriage (1) comprises, interposed between the load-carrying tray (3) and a part of the rolling frame (2), a mechanism (4), preferably of the driving scissor type, in upward movement and downward movement of the load carrier plate (3), 6. trolley (1) for handling loads according to one of the preceding claims, characterized in that said abutment (19) of the plate (3) load carrier, movable between an active position and a so-called inactive position, is formed by a swiveling flange (19) of the load support tray, said flange (19) of the load support tray being pivotally mounted about an axis parallel to the longitudinal axis of the rollers (5) of the tray (3), between a raised position, in which said flange (19) closes the end of said plate, and a lowered position, wherein said flange (19) releases the end of the associated plate, for unloading said plate by sliding the load on the supporting surface of said plate (3), and in that the carriage (1) comprises a releasable locking member (20) of the flange (19) in the raised position, 7. trolley (1) for handling loads according to one of the preceding claims, characterized in that said carriage (1) comprises a member (14) for moving the running board (13) between the retracted position and exit and an unlockable locking member (15) of the running board (13) in the retracted position on the one hand, and in the extended position on the other hand. Load-handling trolley (1) according to one of the preceding claims, characterized in that the motor (7) is an electric motor and in that the motor control system (8, 9) (7) comprises at least two position detection members (9), one for detecting the retracted position of the step (13) and the other for detecting the active position of the stop (19), and a unit (8) for detecting control and in that said control unit (8) is configured to control the motor (7) according to the data provided by said position detection members (9). 9. trolley (1) for handling loads according to claim 8, characterized in that said control unit (8) is configured to control the running of the motor (7) in the active position of the stop (19) and retracted footboard (13) and stopping the motor (7) in the inactive position of the stop (19) or in the non-retracted position of the step (13). 10. trolley (1) for handling loads according to one of claims 8 or 9, characterized in that said control unit (8) is an electronic unit and / or computer and comprises at least one processor.