EP3882462B1 - Baumaschine - Google Patents

Baumaschine Download PDF

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Publication number
EP3882462B1
EP3882462B1 EP21163213.8A EP21163213A EP3882462B1 EP 3882462 B1 EP3882462 B1 EP 3882462B1 EP 21163213 A EP21163213 A EP 21163213A EP 3882462 B1 EP3882462 B1 EP 3882462B1
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EP
European Patent Office
Prior art keywords
mounting device
progressive cavity
cavity pump
construction machine
flange
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP21163213.8A
Other languages
English (en)
French (fr)
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EP3882462A1 (de
Inventor
Jean-Michel R SERVAT
Didier P CHAUVIN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PL2M SAS
Original Assignee
PL2M SAS
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Publication date
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Publication of EP3882462A1 publication Critical patent/EP3882462A1/de
Application granted granted Critical
Publication of EP3882462B1 publication Critical patent/EP3882462B1/de
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
    • B28C5/0887—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing provided with sieves or filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
    • B28C5/0893—Mobile mixing devices, e.g. hanging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
    • B28C5/10—Mixing in containers not actuated to effect the mixing
    • B28C5/12—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers
    • B28C5/1238—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers for materials flowing continuously through the mixing device and with incorporated feeding or discharging devices
    • B28C5/1253—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers for materials flowing continuously through the mixing device and with incorporated feeding or discharging devices with discharging devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/06—Mobile combinations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/22—Arrangements for enabling ready assembly or disassembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
    • F04C2/1071—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
    • F04B15/023—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous supply of fluid to the pump by gravity through a hopper, e.g. without intake valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/05—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by internal-combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00—Manufacture
    • F04C2230/60—Assembly methods

Definitions

  • the present presentation concerns a construction machine making it possible to distribute a fluid product, of the screed type for example, on a construction site as well as a method of replacing a progressive cavity pump on such a construction machine.
  • Such a construction machine and such a method of replacing a progressive cavity pump can in particular be used in the building sector to adapt the pumping properties of the construction machine to the specificities of the construction site on which it is used by allowing a easy and quick replacement of its progressive cavity pump.
  • construction machines are typically used to pump fluid products, such as mortars, screeds, cements or even concrete, in order to supply the needs of the construction site with such products.
  • Such a machine 91 generally takes the form of a trailer fitted with wheels 92 and a hitch system 93. It comprises a chassis 94 including means 95 for receiving the fluid product, generally taking the form of a hopper, and drive means 96, generally taking the form of one or more motors, thermal and/or hydraulic for example. It also includes a pumping device 97, generally of the progressive cavity pump type, and a distribution module 98 provided with a distribution orifice 98a.
  • Such a construction machine conventionally works in the following way.
  • the fluid product to be distributed on the site is received in the reception means 95 directly from a mixer truck, commonly called a mixer truck; the drive means 96 drive the means of pumping 97 which then advances the fluid product from the receiving means 95 to the distribution module 98; the fluid product then escapes through the distribution orifice 98a to which a distribution pipe has been connected which reaches the area of the site requiring the supply of the fluid product.
  • the pumping device 97 is mounted between the receiving means 95 and the distribution module 98 using a rigid mounting device 99.
  • this device mounting 99 comprises a plurality of tie rods 99a, extending from the frame 94, on which they are bolted, passing through the bores of a plate 99b of the distribution module 98, and provided at their front ends with threads on which are screwed tightly with 99c nuts.
  • the pumping device 97 is held in compression between a first centering flange communicating with the hopper of the receiving means 95 and a second centering flange communicating with the distribution module 98.
  • Other machines construction site according to the state of the art are known from the documents FR 1 572 335 , FROM 103 11 342 And FROM 41 20 895 .
  • the pumping device is an integral part of the construction machine.
  • the pumping device is a part that can wear out and which sometimes needs to be replaced.
  • the pumping device since the pumping device is an integral part of the construction machine, it is necessary to partially dismantle the latter in order to extract the pumping device and replace it.
  • this mounting device comprising a movable part, it is possible to install and uninstall the progressive cavity pump forming a pumping device simply and quickly. As a result, the progressive cavity pump can be replaced very easily, in the event of wear for example.
  • the mounting device makes it possible to release the progressive cavity pump by simply moving the module distribution, the distribution module remaining at all times integral with the mounting device and therefore connected to the chassis via the mounting device.
  • the blocking member can be manipulated between a first state in which it blocks the movement of the movable part by relative to the fixed part and a second state in which it authorizes such a movement.
  • the distribution module since the distribution module remains in place, the installation and uninstallation time of the progressive cavity pump is greatly shortened. Likewise, these operations are facilitated. In particular, the risk of error or incident linked to the assembly and disassembly of the distribution module is reduced, in particular problems with alignment or positioning of the distribution module.
  • the movable part of the mounting device is slidably mounted on the fixed part. Installing and uninstalling the progressive cavity pump is thus even simpler and faster since you simply slide the distribution module forward to release the progressive cavity pump. In addition, the problems of alignment and positioning of the distribution module are further reduced since its alignment is preserved.
  • the mounting device includes at least one cradle configured to support the progressive cavity pump.
  • a cradle makes it possible to support the progressive cavity pump during the installation or uninstallation operation, once the mobile part of the device mounting has been slid relative to the fixed part, and therefore once the progressive cavity pump is no longer retained between the flanges of the hopper and the distribution module. This reduces the risk of the progressive cavity pump falling during these operations.
  • the need to use external lifting or carrying equipment to maintain the progressive cavity pump is also reduced as long as the mounting device is open, that is to say as long as the movable part is slid forward. compared to the fixed part.
  • the fixed portion of the mounting device includes at least one cradle configured to support the progressive cavity pump.
  • a fixed support point in the chassis frame of reference ensures better stability of the progressive cavity pump in the frame frame of reference. In particular, this facilitates alignment of the progressive cavity pump with the hopper flange.
  • the mobile part of the mounting device comprises at least one cradle configured to support the progressive cavity pump.
  • a fixed support point in the frame of reference of the distribution module which ensures better stability of the progressive cavity pump in the frame of reference of the distribution module.
  • this facilitates the alignment of the progressive cavity pump with the flange of the distribution module.
  • this makes it possible to place the progressive cavity pump on this cradle and to drive its translation towards the flange of the hopper during sliding of the movable part of the mounting device towards the fixed part.
  • At least a first cradle is provided on the fixed part of the mounting device and a second cradle is provided on the movable part.
  • the progressive cavity pump can be held stably between these two cradles, without the need for external support.
  • the progressive cavity pump also remains supported during the sliding of the movable part relative to the fixed part.
  • At least one cradle of the movable part of the mounting device is positioned so as to support the central part of the progressive cavity pump when the latter is mounted between the hopper outlet flange and the hopper flange. input to the distribution module.
  • this central part corresponds to a section extending axially over a length of 20% of the total length of the progressive cavity pump on either side of the geometric center of the progressive cavity pump.
  • the cradle is located substantially at the level of the center of gravity of the progressive cavity pump, which reduces the risk of the progressive cavity pump tilting around this cradle.
  • At least one cradle is provided with two nipples directed towards the interior of the cradle.
  • Such point contacts make it possible to hold pumping devices having different diameters or having irregular surfaces in a stable manner.
  • a first part of the mounting device among the movable part and the fixed part comprises at least one rod engaged in a guide cylinder of the second part of the mounting device among the movable part and the fixed part.
  • a guide cylinder makes it possible to guide the rod in sliding along a slide connection. It can in particular be formed by a sheath or by at least two aligned bores.
  • the first part of the mounting device is the movable part of the mounting device while the second part of the mounting device is its fixed part.
  • the movable part of the mounting device comprises at least one rod engaged in a guide cylinder of the fixed part. In this way, the guide hole is carried by the fixed part, which provides greater stability and greater handling convenience.
  • the first part of the mounting device comprises two parallel rods engaged in two guide cylinders of the second part. These two rods preferably extend in a horizontal plane; however, other plans are possible.
  • a cradle connects the two rods of the first part of the mounting device.
  • At least one rod of the first part of the mounting device is provided with a detent pin at one of its ends. This end is preferably the one oriented towards the second part of the mounting device, that is to say the rear end when the first part is the movable part.
  • a stop pin forms a stop for sliding and thus makes it possible to avoid inadvertently separating the moving part from the fixed part.
  • At least one rod of the first part of the mounting device is provided with a nut screwed onto a thread provided at one of the ends of the rod.
  • This end is preferably the one oriented opposite the second part of the mounting device, that is to say the front end when the first part is the movable part.
  • This nut system makes it possible to complete the blocking action of the blocking member so as to ensure a greater compression force on the progressive cavity pump, when this is desired.
  • the distribution module is slidably mounted on at least one rod of the movable part of the mounting device.
  • the distribution module may comprise at least one bore crossed by said rod.
  • the distribution module can be retained at the rear end of the rod by a nut, a pin or any other retaining member.
  • the fixed part of the mounting device is a console mounted on the front face of the chassis.
  • the second part of the mounting device comprises two arms, each carrying a guide cylinder.
  • a cradle connects the two arms of the second part of the mounting device.
  • At least one locking member of the mounting device is a locking pin.
  • a locking pin is easy and quick to insert or remove to block or allow the sliding of the mounting device.
  • At least one locking pin is configured to engage in a locking hole of the first part of the mounting device and to be retained, once engaged in this locking hole, by a portion of the second part of the mounting device.
  • This stopping portion may in particular be a stopping surface provided on the back of the guide cylinder considered.
  • At least one locking pin is inclined relative to the vertical direction, preferably outward. This makes it easier to grip and maneuver the pin.
  • the locking pin can form an angle with the vertical direction of between 10 and 30°.
  • the construction machine further comprises a drive device, preferably mounted in the chassis. This drive device makes it possible to drive the progressive cavity pump.
  • the drive device is a motor.
  • This motor may in particular be thermal and/or hydraulic.
  • the construction machine includes a transmission shaft, connected to the output of the drive device and passing through the hopper towards the output flange.
  • this transmission shaft can be aligned, and preferably centered, on the output flange.
  • Such a shaft makes it possible to transmit the torque from the drive device to the progressive cavity pump.
  • the transmission shaft is provided with an Archimedes screw, pallets, or other transport elements. In this way, the transmission shaft helps to transport the fluid product present in the hopper towards the inlet of the progressive cavity pump.
  • the transmission shaft does not have a transport element.
  • the progressive cavity pump can be self-priming.
  • the transmission shaft is provided, at its front end, with a coupling part configured to couple the transmission shaft to the rotor of the progressive cavity pump.
  • the coupling part is configured to transmit a rotational torque while allowing axial translational movement of the rotor of the progressive cavity pump, at least forwards. In this way it is possible to uncouple the cavity pump progressive of the transmission shaft by a simple translation, which is possible after movement, and preferably sliding, of the movable part of the mounting device.
  • no bolting more generally no retaining member, retains the rotor of the progressive cavity pump on the coupling part. No tools are therefore required, and no potentially difficult access to the interior of the hopper is therefore necessary, which further simplifies the operation of installing or uninstalling the progressive cavity pump.
  • the coupling part has a hollow profile designed to receive a driving head of the rotor of the progressive cavity pump.
  • This profile can include at least 2 sides, for example 3 or 4 sides. It may in particular be a square profile.
  • the mating part includes a mating plate, extending in an axial plane and having two opposing mating surfaces, adapted to engage in a drive slot of a head of rotor drive of the progressive cavity pump.
  • the mating plate has a centering projection at its front end intended to engage a centering recess of the drive slot.
  • the coupling part comprises a centering ring, the central axis of which is parallel, preferably coincident, with the axis of the transmission shaft, designed to engage around the head of the transmission.
  • This ring is preferably cylindrical, preferably with a circular base.
  • the distribution module includes a stop configured to block the forward axial translation of the rotor of the progressive cavity pump.
  • a stop makes it possible to block the rotor against the coupling part when the progressive cavity pump is installed.
  • Such a stop is mainly useful when it is planned to drive the progressive cavity pump in reverse: in fact, in forward gear, the rotor is naturally pressed towards the coupling part.
  • the construction machine includes said progressive cavity pump.
  • This progressive cavity pump is preferably passive, that is to say driven by a driving torque provided from the outside, for example by the drive device mentioned above.
  • the flanges of the hopper and the distribution module are smooth.
  • the progressive cavity pump is not bolted to the latter: it is retained by compression between the latter.
  • the fluid product is a mortar, a screed, a cement or a concrete.
  • this product can have a certain viscosity.
  • the new progressive cavity pump may have a diameter different from that of the progressive cavity pump initially in place.
  • adaptation elements such as shims or spacers can be added to center the progressive cavity pump of smaller diameter on the larger diameter flanges of the hopper and the distribution module.
  • At least one nut screwed onto a thread provided at one of the ends of a rod of the mounting device is loosened.
  • this nut is simply loosened without being removed from the rod. In this way, part of the forces that can be exerted on the blocking member are released, which facilitates its operation.
  • At least said nut is tightened.
  • the rotor of the progressive cavity pump is uncoupled from the coupling part of the transmission shaft by a simple translation.
  • the rotor of the new progressive cavity pump is coupled with the coupling part of the transmission shaft, after alignment, by a simple translation.
  • axial means a plane passing through the main axis of the progressive cavity pump and “radial plane” means a plane perpendicular to this main axis;
  • upstream and downstream are defined in relation to the circulation of the fluid product in the construction machine.
  • FIG. 2 illustrates an example of construction machine 1 according to the presentation.
  • This construction machine 1 takes the form of a trailer equipped with wheels 2 and a hitch system 3. It comprises a chassis 10, a pumping device 20 and a distribution module 30. The pumping device 20 and the distribution module 30 are mounted on the chassis 10 using a mounting device 40.
  • the construction machine 1 comprises a hopper 11, mounted in the chassis 10, closed by a cover liftable 12 in which an opening 13 is made.
  • This hopper 11 is intended to receive a fluid product to be distributed on a construction site, for example a screed.
  • a mixer truck thus supplies this hopper 11 with fluid product through the opening 13.
  • a grid 14, acting as a screen or sieve, is provided at the top of the hopper 11 in order to retain any undesirable particles of large dimensions such as stones.
  • the hopper 11 is provided at its lower end, on the front of the chassis 10, with an outlet flange 11a (visible in particular on the figure 4 And 5 ).
  • This outlet flange 11a is circular and measures approximately 20 cm in diameter. It forms an annular shoulder, set back from the facade of the chassis 10, surrounding an outlet orifice 11b of the hopper 11.
  • the construction machine 1 also includes a drive device 60 mounted in the chassis, associating a thermal engine, for example of the diesel type, with a hydraulic machine.
  • the output shaft 61 of this drive device is coupled to a transmission shaft 62 using a first coupling part 63.
  • This coupling part has an elasticity allowing radial eccentricity of the shaft transmission shaft 62 relative to the output shaft 61.
  • the transmission shaft 62 extends through the hopper 11 to near its outlet orifice 11b where it ends in a second coupling part 64, centered on the outlet orifice 11b.
  • This coupling part 64 has on its front face, opposite the transmission shaft 62, a four-sided hollow profile 64a of square shape (visible in particular on the figure 5 ).
  • the transmission shaft 62 also forms the axis of an Archimedes screw 62a intended to facilitate the transport of the fluid product towards the outlet orifice 11b of the hopper 11.
  • the distribution module 30 takes the shape of a cone comprising a rear end plate 31, that is to say upstream, and a front end plate 32, that is to say downstream.
  • the rear end plate 31 is provided with a flange 31a surrounding a large diameter inlet port 31b; the front end plate 32 is provided for its part with a distribution orifice 32a of smaller diameter intended to distribute the fluid product pumped by the construction machine 1, in a distribution pipe for example.
  • the rear end plate 31 further comprises two bores 33 provided symmetrically with respect to the vertical axial plane.
  • the flange 31a of the distribution module 30 is circular and measures approximately 20 cm in diameter. It thus forms an annular shoulder, set back relative to the rear plate 31 of the distribution module 30, surrounding the inlet orifice 31b of the distribution module 30.
  • the distribution module 30 further has a stop 34 held in the center of the inlet orifice 31b using two arms 34a extending from the internal walls of the distribution module 30.
  • the pumping device 20 is of the progressive cavity pump type. It comprises a stator made of elastomeric material enclosed in a metal casing 21.
  • This casing 21 is cylindrical and has a diameter equal to or slightly less than that of the flanges 11a and 31a.
  • the front and rear ends of the casing 21 of the progressive cavity pump 20 rest respectively on the shoulder formed by the flange 31a of the distribution module 30 and the shoulder formed by the flange 11a of the hopper 11.
  • the casing 21 is thus retained in compression between these two flanges 11a, 31a, which blocks the position and orientation of the casing 21 and therefore of the progressive cavity pump 20.
  • the stator made of elastomeric material ensures the sealing of the progressive cavity pump 20 by also applying to the shoulders of these flanges 11a, 31a.
  • the progressive cavity pump 20 also comprises a rotor provided with a drive head having a shape complementary to the hollow face profile 64a of the second coupling part 64.
  • the head of the rotor can thus engage axially in the second coupling part 64 in order to couple the rotor of the progressive cavity pump 20 with the drive device 60.
  • a clearance of at least 1 mm can however be provided between the faces of the head of the rotor and the sides of the hollow profile 94a of the second coupling part 64.
  • the downstream end of the rotor is retained axially by the stop 34 of the distribution module 30. In this way, the rotor of the progressive cavity pump is maintained sandwiched between the second coupling part 64 and the stop 34, without it being necessary to bolt, or fix in any way, the rotor on the second coupling part 64 or the stop 34.
  • the mounting device 40 comprises a fixed part 41, surface-mounted on the front facade of the chassis 10, around the flange 11a of the hopper 11, and a mobile part 51, secured to the distribution module 30.
  • the fixed part 41 of the mounting device 40 comprises two arms 42, extending forward, on either side of the flange 11a of the hopper 11 symmetrically with respect to the vertical axial plane. These two arms 42 are connected by a first cradle 43 extending in a radial plane. This first cradle 43 is provided with two pins 43a, symmetrical with respect to the vertical axial plane and directed towards the inside of the cradle 43.
  • Each arm 42 is provided, at its front end, with a front plate 44 and, around ten centimeter further back, with a stop plate 45.
  • the front plate 44 and the stop plate 45 are each provided with a bore 44a, 45a, these two bores 44a, 45a, of the same diameter, being aligned according to the axial direction so as to form a guide cylinder 46.
  • the mobile part 51 of the mounting device 50 comprises two rods 52, extending axially, connected by a second cradle 53, extending in a radial plane.
  • This second cradle 53 is also provided with two pins 53a similar to those of the first cradle 43.
  • This second cradle 53 is provided axially substantially in the middle of the rods 52.
  • each of these rods 52 is engaged in a respective guide cylinder 46 of the fixed part 41 of the mounting device 40.
  • the diameter of the rear portion of these rods is thus substantially equal, or slightly less, than that bores 44a, 45a.
  • the rods 52 can slide in the guide cylinders 46, which allows the sliding of the movable part 51 of the mounting device 40 relative to its fixed part 41.
  • a stop pin 54 is mounted across the rear end of each of the rods 52 in order to prevent the rods 52 from being withdrawn from the guide cylinders 46, the stop pins 54 being retained at the end of their stroke by the stop plate 45 of the fixed part 41 of the mounting device 40.
  • each of these rods 52 is threaded and engaged in a respective bore 33 of the distribution module 30; a nut 55 screwed onto the front end of each rod 52 makes it possible to block the sliding of the distribution module 30 towards the front and thus ensures that the distribution module 30 is permanently secured to the chassis 10 via the device assembly 40.
  • each rod 52 is provided, in its rear half, approximately halfway between the cradle 53 and its rear end, with a blocking orifice 56, passing perpendicularly through the rod 52 from one side to the other.
  • the direction formed by this blocking orifice is inclined both with respect to the vertical direction and the horizontal direction; in the present example, it forms an angle of approximately 20° relative to the vertical direction.
  • each rod 52 comprises only one blocking orifice 56: however, in other examples, each rod could comprise several blocking orifices provided at different levels of the rod in order to install pumping devices of varying lengths.
  • the mounting device 40 further comprises a locking pin 57 for each of the rods 52.
  • This locking pin 57 can be engaged in the locking orifice 56 of the rod 52 to limit or block the sliding of the rod 52, the locking pin 57 being stopped either by the stop plate 45 of the fixed part 41 of the mounting device 40 when the latter is in its "closed” state, that is to say its operational mounting state, the part movable 51 being pushed backwards, either by the front plate 44 when the mounting device 40 is in its “open” state, the movable part 51 being pulled forwards.
  • the fully assembled and functional configuration can be seen on the figure 2 .
  • the progressive cavity pump 20 is installed between the hopper 11 and the distribution module 30.
  • the mounting device 40 is in its operational mounting state, that is to say in the “closed” state where the movable part 51 is pushed against the part fixed 41.
  • the locking pins 57 are engaged in the locking holes 56 and retained against the stop plates 45.
  • the second cradle 53 is located less than five centimeters from the plates front 44 of the fixed part 41.
  • the nuts 55 of the rods 52 of the mounting device 40 are slightly loosened to release the compressive stress exerted on the progressive cavity pump 20 as well as the shear stresses exerted on the locking pins 57 engaged in their locking holes 56.
  • the nuts 55 are simply loosened and are not unscrewed until they are removed from the rods 52: in this way, the distribution module 30 remains mounted on the mounting device 40.
  • the locking pins 57 are removed from their locking holes 56, which frees the sliding of the rods 52 in their guide cylinders 46.
  • the distribution module 30 can then be pulled forward, which causes the sliding of the movable part 51 of the mounting device relative to its fixed part 41.
  • the progressive cavity pump 20 then became detached from at least one of the flanges 11a or 31a and rests freely on the cradles 43 and 53. If the progressive cavity pump 20 remained stuck to the flange 11a from the hopper 11, it is then sufficient to pull it a few centimeters forward to uncouple, without the intervention of any tool, the rotor of the progressive cavity pump 20 from the second coupling part 64; otherwise, uncoupling has already taken place during sliding of the mounting device 40. The progressive cavity pump 20 can then be removed.
  • the new progressive cavity pump 20 is then positioned on the cradles 43 and 53.
  • the progressive cavity pump 20 is pressed against one of the flanges 11a, 31a, preferably the flange 31a of the distribution module 30.
  • the distribution module 30 is pushed backwards, bringing with it the new progressive cavity pump 20, until the new progressive cavity pump finds itself resting against the flange 11a of the hopper 11.
  • the locking pins 57 can be engaged again in the locking holes 56 which have found their places behind the stop plates 45.
  • the nuts 55 are then tightened in order to increase the compressive stress exerted on the new progressive cavity pump 20 and, thus, firmly block its position and orientation.
  • the second coupling part 164 still located at the downstream end of the transmission shaft 162, has a coupling plate 164a, extending in an axial plane and having two coupling surfaces opposite.
  • the coupling part 164 also includes a centering ring 164b, cylindrical with a circular base whose central axis coincides with the axis of the transmission shaft 162.
  • the progressive cavity pump rotor drive head 122 has a cylindrical outer surface 122a and a drive slot 122b extending axially from its upstream end.
  • the coupling plate 164a can thus engage in the drive slot 122b of the drive head 122 of the rotor of the progressive cavity pump in order to ensure rotational coupling.
  • the centering ring 164b makes it possible to radially retain the cylindrical external surface 122a in order to ensure its centering.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)
  • Reciprocating Pumps (AREA)

Claims (11)

  1. Baumaschine, umfassend:
    ein Gehäuse (10), das mit einem stromaufwärtigen Flansch (11a) versehen ist, der dazu vorgesehen ist, mit einem stromaufwärtigen Ende einer Exzenterschneckenpumpe (20) zu kommunizieren,
    ein stromabwärtiges Modul (30), das einen stromabwärtigen Flansch (31a) umfasst, der dazu vorgesehen ist, mit einem stromabwärtigen Ende der Exzenterschneckenpumpe (20) zu kommunizieren, und
    eine Montagevorrichtung (40), die dazu ausgestaltet ist, die Exzenterschneckenpumpe (20) zwischen dem stromaufwärtigen Flansch (11a) und dem stromabwärtigen Flansch (31a) des stromabwärtigen Moduls (30) zu montieren,
    wobei die Montagevorrichtung (40) umfasst:
    einen festen Teil (41), der fest mit dem Gehäuse (10) verbunden ist,
    einen beweglichen Teil (51), der fest mit dem stromabwärtigen Modul (30) verbunden und auf bewegliche Weise an dem festen Teil (41) montiert ist, und
    ein Blockierelement (57), das dazu ausgestaltet ist, die Beweglichkeit des beweglichen Teils (51) relativ zu dem festen Teil (41) zu blockieren oder freizugeben,
    dadurch gekennzeichnet, dass der bewegliche Teil der Montagevorrichtung (40) mindestens eine Halterung (53) umfasst, die dazu ausgestaltet ist, die Exzenterschneckenpumpe (20) zu stützen.
  2. Baumaschine nach Anspruch 1, wobei der bewegliche Teil (51) der Montagevorrichtung an dem festen Teil (41) verschiebbar montiert ist.
  3. Baumaschine nach Anspruch 1 oder 2, wobei ein erster Teil (51) der Montagevorrichtung (40) von dem beweglichen Teil (51) und dem festen Teil (41) mindestens eine Stange (52) in Eingriff mit einem Führungszylinder (46) des zweiten Teils (41) der Montagevorrichtung (40) von dem beweglichen Teil (51) und dem festen Teil (41) umfasst, wobei der erste Teil der Montagevorrichtung vorzugsweise der bewegliche Teil (51) der Montagevorrichtung (40) ist, während der zweite Teil der Montagevorrichtung vorzugsweise ihr fester Teil (41) ist.
  4. Baumaschine nach Anspruch 3, wobei der zweite Teil (41) der Montagevorrichtung (40) zwei Arme (42) umfasst, die jeweils einen Führungszylinder (46) tragen,
    wobei eine zusätzliche Halterung (43) die zwei Arme (42) des zweiten Teils (41) der Montagevorrichtung (40) verbindet,
    wobei der erste Teil (51) der Montagevorrichtung (40) zwei parallele Stangen (52) umfasst, die sich vorzugsweise in einer horizontalen Ebene erstrecken und jeweils in Eingriff mit einem Führungszylinder (46) des zweiten Teils (41) stehen, und
    wobei die Halterung (53) die zwei Stangen (52) des ersten Teils (51) der Montagevorrichtung (40) verbindet.
  5. Baumaschine nach Anspruch 3 oder 4, wobei mindestens eine Stange (56) des beweglichen Teils (51) der Montagevorrichtung (40) mit einer Mutter (55) versehen ist, die auf ein Gewinde aufgeschraubt ist, das an dem vorderen Ende der Stange (52) vorgesehen ist, und
    wobei das stromabwärtige Modul (30) auf mindestens einer Stange (52) des beweglichen Teils (51) der Montagevorrichtung (40) verschiebbar montiert ist.
  6. Baumaschine nach einem der Ansprüche 1 bis 5, wobei mindestens ein Blockierelement (57) der Montagevorrichtung (40) ein Blockierstift (57) ist, wobei der Blockierstift (57) dazu ausgestaltet ist, in Eingriff mit einer Blockieröffnung (56) des ersten Teils (51) der Montagevorrichtung (40) zu stehen und nach Eingriff mit dieser Blockieröffnung (56) von einem Abschnitt (45) des zweiten Teils (41) der Montagevorrichtung (40) festgehalten zu werden.
  7. Baumaschine nach einem der Ansprüche 1 bis 6, umfassend eine Antriebsvorrichtung (60), eine Übertragungswelle (62), die mit dem Ausgang (61) der Antriebsvorrichtung (60) verbunden ist und sich in Richtung des stromaufwärtigen Flansches (11a) erstreckt, und wobei die Übertragungswelle (62) an ihrem vorderen Ende mit einem Kopplungsteil (64) versehen ist, der dazu ausgestaltet ist, die Übertragungswelle (62) mit dem Rotor der Exzenterschneckenpumpe (20) zu koppeln.
  8. Baumaschine nach Anspruch 7, wobei der Kopplungsteil (64) dazu ausgestaltet ist, ein Drehmoment zu übertragen und gleichzeitig eine axiale Verschiebungsbewegung des Rotors der Exzenterschneckenpumpe (20) zumindest nach vorne zu ermöglichen, und wobei das stromabwärtige Modul (30) einen Anschlag umfasst, der dazu ausgestaltet ist, die axiale Verschiebung des Rotors der Exzenterschneckenpumpe (20) nach vorne zu blockieren.
  9. Baumaschine nach Anspruch 8, wobei der Kopplungsteil (64) ein Hohlseitenprofil mit 3 oder 4 Seiten besitzt, das dazu vorgesehen ist, einen Antriebskopf des Rotors der Exzenterschneckenpumpe (20) aufzunehmen.
  10. Baumaschine nach einem der Ansprüche 1 bis 9, umfassend die Exzenterschneckenpumpe (20).
  11. Verfahren zum Austausch einer Exzenterschneckenpumpe an einer Baumaschine nach einem der Ansprüche 1 bis 10, umfassend die folgenden Schritte:
    Freigeben des Blockierelements (57),
    Zurückziehen des beweglichen Teils (51) der Montagevorrichtung (40), der fest mit dem stromabwärtigen Modul (30) verbunden ist,
    Entfernen der ursprünglich vorhandenen Exzenterschneckenpumpe (20),
    Installieren der neuen Exzenterschneckenpumpe (20) an einem ersten Flansch von dem stromaufwärtigen Flansch (11a) des Gehäuses (10) und dem stromabwärtigen Flansch (31a) des stromabwärtigen Moduls (30),
    Zusammenbringen des beweglichen Teils (51) der Montagevorrichtung (40), der fest mit dem stromabwärtigen Modul (30) verbunden ist, bis die neue Exzenterschneckenpumpe (20) an dem zweiten Flansch von dem stromaufwärtigen Flansch (11a) des Gehäuses (10) und dem stromabwärtigen Flansch (31a) des stromabwärtigen Moduls (30) anliegt, und
    Blockieren des Blockierelements (57).
EP21163213.8A 2020-03-20 2021-03-17 Baumaschine Active EP3882462B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2002741A FR3108345B1 (fr) 2020-03-20 2020-03-20 Machine de chantier

Publications (2)

Publication Number Publication Date
EP3882462A1 EP3882462A1 (de) 2021-09-22
EP3882462B1 true EP3882462B1 (de) 2024-04-24

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FR (1) FR3108345B1 (de)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4120895C2 (de) * 1991-06-25 1998-08-27 Putzmeister Ag Mischpumpe

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1572335A (de) * 1968-04-05 1969-06-27
DE10245497C5 (de) * 2002-09-27 2009-02-19 Wilhelm Kächele GmbH Elastomertechnik Exzenterschneckenpumpe mit vergrößertem Temperaturbereich
DE10311342B3 (de) * 2003-03-14 2004-08-26 Mai International Gmbh Mörtelmischpumpe
FR2948424B1 (fr) * 2009-07-23 2017-07-21 Pcm Pompe a cavites progressives et dispositif de pompage associe
FR3057468B1 (fr) * 2016-10-13 2021-01-29 Pl2M Crible a pentes convergentes

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4120895C2 (de) * 1991-06-25 1998-08-27 Putzmeister Ag Mischpumpe

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FR3108345B1 (fr) 2023-04-21
EP3882462A1 (de) 2021-09-22
FR3108345A1 (fr) 2021-09-24

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