Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
  • B05B12/004—Arrangements for controlling delivery; Arrangements for controlling the spray area comprising sensors for monitoring the delivery, e.g. by displaying the sensed value or generating an alarm
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
  • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
  • B05B12/082—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to a condition of the discharged jet or spray, e.g. to jet shape, spray pattern or droplet size
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
  • B05B12/16—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
  • B05B9/01—Spray pistols, discharge devices
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F41—WEAPONS
  • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
  • F41A17/00—Safety arrangements, e.g. safeties
  • F41A17/08—Safety arrangements, e.g. safeties for inhibiting firing in a specified direction, e.g. at a friendly person or at a protected area
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F41—WEAPONS
  • F41B—WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
  • F41B9/00—Liquid ejecting guns, e.g. water pistols, devices ejecting electrically charged liquid jets, devices ejecting liquid jets by explosive pressure
  • F41B9/0087—Liquid ejecting guns, e.g. water pistols, devices ejecting electrically charged liquid jets, devices ejecting liquid jets by explosive pressure characterised by the intended use, e.g. for self-defence, law-enforcement, industrial use, military purposes

Definitions

• the present invention relates to a projection tool, in particular with a dangerous projection, of solid, liquid and / or gaseous products.
• the present invention can be applied to all sectors of activity (industry, service provision, leisure, etc.) where an operator uses a projection tool implementing a continuous or discontinuous projection (of solid, liquid or gaseous) and generating a dangerous projection for him and / or his environment.
• This projection tool can in particular correspond to one of the following tools: a high-pressure water jet cleaning lance, a sandblasting or shot blasting lance, a supersonic compressed air jet (especially for cleaning of cracks in pavements), a dry ice lance, a torch, a heat gun, etc.
• This projection tool includes at least:
• a projection lance configured to project a product in a projection direction
• a trigger member adapted to be actuated manually by an operator, to trigger the projection of the product.
• the danger of such a projection tool is related to the risk of bodily injury by an accidental projection of the operator against himself (loss of balance, poor control of a reaction of the projection tool, etc. ), or on an operator moving nearby (uncontrolled movement outside the area concerned by the work, ). To a lesser extent, dangerousness may also relate to the deterioration of goods or elements of the environment.
• the projection tools are generally equipped with a direct-acting control (for example a mechanical valve on a trigger handle when in need of mobility or foot control in case of static work, .. .) or more often indirect action (closing of a power circuit by a control (electronic, electrical, pneumatic, ...)).
• a direct-acting control for example a mechanical valve on a trigger handle when in need of mobility or foot control in case of static work, .. .
• indirect action closing of a power circuit by a control (electronic, electrical, pneumatic, ...)).
• a supervisor who authorizes the opening of the power circuit, by an action maintained on a control member.
• the present invention aims to overcome these disadvantages. It relates to a projection tool comprising at least one projection lance configured to project a product in a direction of projection and a trigger member adapted to be actuated manually by an operator, the projection tool being configured to trigger the projection of the product during actuation of the triggering member by the operator.
• said projection tool further comprises a protection device which comprises:
• a monitoring unit configured to monitor the projection direction of the projection tool with respect to at least one projection authorization beam, said projection authorization beam being defined around a reference axis starting at a reference point fixed on the projection tool, said reference axis having a given orientation in space, the monitoring unit being configured to emit an alert signal as soon as and the projection direction is outside the projection authorization beam;
• a cutoff unit configured to prevent projection by the projection tool when actuating the trigger member, as long as an alert signal is issued.
• the projection of a product by the projection tool is made impossible by the protection device as soon as the projection direction of the projection tool, that is to say the direction through which the product is projected, comes out of a projection authorization beam.
• the projection authorization beam with respect to a given direction in space (defined by said reference axis) presenting no risk of injury and / or deterioration, projection is allowed only when it is Safe for the operator and / or his environment.
• this protection does not require the continuous intervention of a third person.
• the projection authorization beam is predefined and can not be modified, while in a preferred embodiment, the projection authorization beam is adjustable.
• the protection device further comprises:
• an adjustment unit enabling an operator to provide characteristics for defining the projection authorization beam, and at least said reference axis; and a processing unit for defining said projection authorization beam from said characteristics, said projection authorization beam being used by the monitoring unit.
• the monitoring unit comprises:
• the monitoring unit comprises, as a sensor, at least one of the following elements:
• the adjustment unit comprises a control member operable by an operator, and is configured to record, as a reference axis, the projection direction of the projection tool at a given instant. where an operator actuates the adjustment member.
• the adjustment unit advantageously comprises an input unit enabling an operator to enter at least some of said characteristics.
• the input unit is:
• the projection authorization beam has one of the following forms:
• the projection tool is portable and / or it is configured to project at least one of the following products:
• the present invention also relates to a projection method, using a projection tool comprising at least one projection lance configured to project a product in a direction of projection and a trigger member adapted to be actuated manually by an operator , the projection tool being configured to trigger the projection of the product during the actuation of the trigger member by the operator.
• said projection method comprises:
• a monitoring step for monitoring the projection direction of the projection tool with respect to at least one projection authorization beam, said projection authorization beam being defined around a reference axis starting at a point reference plane fixed on the projection tool, said reference axis having a given orientation in space, the monitoring step being configured to emit an alert signal as soon as and the projection direction is outside the beam projection authorization;
• said projection method further comprises:
• an adjustment step enabling an operator to provide characteristics for defining the projection authorization beam, and at least said reference axis; and a processing step for defining said projection authorization beam from said characteristics, said projection authorization beam being used in the monitoring stage.
• Figure 1 is a schematic perspective view of a projection tool carried by an operator.
• Figure 2 is a block diagram of a particular embodiment of a protection device according to the invention.
• Figures 3, 4 and 5 are schematic views, in perspective, of a projection tool carried by an operator, respectively in different positions of the projection tool.
• Figure 6 is a schematic perspective view of a projection tool carried by an operator, to explain features of the invention.
• Figure 7 is a schematic perspective view of a projection tool illustrating successive positions of the operator carrying said projection tool.
• the projection tool 1 illustrating the invention and shown schematically in Figure 1 is a projection projection tool may be dangerous, solid, liquid and / or gaseous, for example to treat or clean a surface.
• This projection tool 1 is used by an operator OP shown diagrammatically in FIG. 1, which carries the projection tool 1.
• the present invention can be applied to all sectors of activity (industry, service provision, leisure, etc.) where an OP operator uses a projection tool 1 implementing a projection, continuous or discontinuous, capable of be dangerous for him and / or his environment.
• This projection tool 1 may, in particular, correspond to one of the following tools: a high-pressure water jet cleaning lance, a sandblasting or shot blasting lance, a supersonic compressed air jet (in particularly for the cleaning of cracks in pavements of road pavements), a dry ice lance, a torch and / or a heat gun, ...
• This projection tool 1 comprises in particular, as shown in FIG.
• a member (or handle) 2 trigger (or control), such as a trigger or trigger, which is adapted to be operated manually by the OP operator; and a projection lance 3 configured to project a product in a direction of projection L, as illustrated by an arrow E.
• the projection lance 3 is connected to a tank (not shown) of product to be sprayed.
• the projection tool 1 is configured, in the usual way, to project the product only, upon actuation of the trigger member 2 by the operator OP.
• the projection tool 1 may be continuous projection or discontinuous projection.
• said projection tool 1 further comprises a protection device 4.
• said protection device 4 comprises, as represented in FIG. 2:
• a monitoring unit 5 which is configured:
• This cutoff unit 6 can be any element, especially a mechanical element, making it possible to prevent the projection when it is triggered by the triggering element 2.
• the projection of a product by the projection tool 1 is made impossible by the protection device 4 as soon as the projection direction L of the projection tool 1, that is to say the direction by which the product is projected out of said projection projection beam F.
• the projection tool 1 also comprises, by way of illustration:
• a lateral handguard 10 held by the left hand MG of the operator OP.
• the projection authorization beam F is defined around a reference axis R starting at a reference point P fixed on the projection tool 1. According to the invention, this reference axis R has a given orientation in space.
• the protection device 4 allows a projection only when is safe for the OP operator and / or his environment. In addition, this protection does not require the continuous intervention of a third person.
• a dangerous projection is therefore automatically prevented when the projection direction L of the projection tool 1, for example the axis of a very high-pressure THP-type lance, comes out of a virtual security beam called a beam.
• projection authorization F which is established around a reference axis R.
• the reference axis R preferably corresponds to a preferred working (projection) direction.
• the vertex P of the projection authorization beam F that is to say the starting point of the half-line representing the reference axis R, is defined on the projection tool 1 and is located near immediate release member 2, for example less than 10 centimeters, as shown in Figure 6.
• the protection device 4 therefore forces the operator OP to constantly seek to be in the safety position behind the projection lance 3 so that the projection tool 1 can operate.
• any sudden or rapid displacement of the projection tool 1 (for example due to a fall of the OP operator or a loss of control of the projection tool 1 due to the HP jet reaction), as shown in FIG. 4 and 5, is detected by the protection device 4 which then prevents the projection.
• the OP operator can not hurt himself by for example projecting the product to a foot, as shown in FIG.
• the projection authorization beam F is predefined and fixed (for example at the time of manufacture of the projection tool 1) and can not be modified.
• the projection authorization beam F is adjustable.
• the protection device 4 further comprises, as shown in FIG. 2:
• a setting unit 1 1 enabling an operator OP to provide characteristics for defining the projection authorization beam F, and at least said reference axis R;
• a processing unit 12 which is connected via a link 13 to the control unit 11 and which is configured to define said projection authorization beam F at least from the characteristics, and especially from the reference axis R received via the adjustment unit 1 1, and possibly from predetermined and recorded characteristics.
• the projection authorization beam F thus defined is transmitted to the monitoring unit 5 via a link 14, which uses it as indicated above.
• the projection authorization beam F which starts from the point P on the projection tool 1, which is located near the trigger member 2, can have many shapes.
• the projection authorization beam F may be:
• the monitoring unit 5 preferably comprises an electronic module 22 located near the triggering member 2, and is capable of controlling a direction oriented in space (reference axis R) and the F beam around this direction which is the projection permission limit.
• the monitoring unit 5 comprises:
• This set 17 may be a module containing a mini-sensor integrating a gyroscope, an accelerometer (and / or a compass); and
• a processing module 18 connected via a link 19 to the assembly 17 and configured to process the information generated by said one or more sensors C.
• the adjustment unit 1 1 comprises a control member that can be actuated by an operator OP, for example the trigger member 2, and is configured to record, as reference axis R, the projection direction L of the projection tool 1 at a time when an operator OP actuates this adjustment member.
• the operator or a supervisor thus saves a projection direction L in the space by orienting the projection tool 1, for example by selecting a setting mode, setting the projection tool 1 to position.
• the operator or supervisor also sets the allowed angular deviation to deviate from this reference axis R, in particular via successive pulses, for example at a pitch of 2 ° 5 "per pulse.
• the adjustment unit 1 1 comprises an input unit 15, 16 allowing an operator OP to enter at least some of said characteristics intended to define the projection authorization beam F.
• the input unit can be:
• an input unit 15 for example a mini keyboard, which is directly mounted on the projection tool 1;
• an input unit 16 which is remote and configured to enable remote input from a remote computer (microcomputer or smartphone with application).
• a remote computer microcomputer or smartphone with application.
• the communication mode is wired or radio, and the transmission data are preferably coded to secure the exchange.
• the protection device 4 thus makes it possible to link to the projection tool 1 a projection authorization beam F whose parameterization is that the spatial orientation is fixed and the aperture is constant.
• the reference axis R (of the window) is the desired direction to orient the projection. Preferably, it originates from the fixed point P of a gyro sensor mounted on the projection tool 1 and for orientation of the projection direction L.
• This reference axis (namely a half-line) is movable and can be move with the projection tool 1 at any point in the space, keeping a fixed orientation.
• the protection device 4 automatically controls the projection prohibition outside the scope of this opening.
• the projection authorization beam F forms, on the wall 23 on which the projection takes place, a projection zone Z (or window) whose shape depends on the shape of the projection authorization beam. F and the angle between the reference axis R and a direction normal to the wall 23.
• the window is round or elliptical.
• the zone Z (or window) is round, the reference axis R being substantially orthogonal to the wall 23.
• the window is square or rectangular.
• the operator OP moves laterally, as illustrated by an arrow G along the wall 23.
• Two positions P1 and P2 are represented in this FIG. 7.
• a zone Z1, Z2 is treated by the projection tool 1.
• the displacement of the treatment zone forms a strip B substantially rectangular and horizontal.
• the projection tool 1 is portable, that is to say that it is carried by an operator OP, as shown in Figure 1 in particular.
• the projection tool 1 may alternatively also be mounted, fixedly or removably, on a mobile machine, in particular on a rolling machine.
• the protection device 4 can provide protection by allowing projection in a plurality (two, three, ...) of projection authorization beams, similar to the projection authorization beam. F supra, but having different reference axes and possibly different opening angles.
• the protection device 4 implements the following successive steps of a protection method: a monitoring step configured to monitor the projection direction L of the projection tool 1 with respect to at least one projection authorization beam F, said projection authorization beam F being defined around an axis of projection, reference R starting at a reference point P fixed on the projection tool 1, said reference axis R having a given orientation in space, the monitoring unit 5 being configured to emit an early warning signal and that the reference axis R is outside the projection authorization beam F; and
• a cutoff step configured to prevent projection by the projection tool 1 when actuating the trigger member 2, as long as a warning signal is issued.
• the protection device 4 makes it possible to secure the operator OP which uses the projection tool 1 with a dangerous projection of solid, liquid or gaseous products, by automatic prohibition of projection out of a projection authorization beam F , forming a window such as the base of a cone or a pyramid with five faces, whose vertex (centered or not) is located near the trigger member 2.

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• Chemical & Material Sciences (AREA)
• Analytical Chemistry (AREA)
• Auxiliary Devices For Machine Tools (AREA)
• Emergency Lowering Means (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=56087372

Family Applications (1)

Country Status (3)

Cited By (1)

Citations (8)

• 2016
  • 2016-03-22 FR FR1652452A patent/FR3049199A1/fr not_active Withdrawn
• 2017
  • 2017-03-03 WO PCT/FR2017/050486 patent/WO2017162950A1/fr active Application Filing
  • 2017-03-03 EP EP17713348.5A patent/EP3433024B1/de active Active

Patent Citations (8)

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