EP0960659A1 - Système de commande pour le déplacement d'un compacteur à plaque vibrante - Google Patents

Système de commande pour le déplacement d'un compacteur à plaque vibrante Download PDF

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Publication number
EP0960659A1
EP0960659A1 EP99108350A EP99108350A EP0960659A1 EP 0960659 A1 EP0960659 A1 EP 0960659A1 EP 99108350 A EP99108350 A EP 99108350A EP 99108350 A EP99108350 A EP 99108350A EP 0960659 A1 EP0960659 A1 EP 0960659A1
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EP
European Patent Office
Prior art keywords
piston
spool
cylinder
passage
control device
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.)
Granted
Application number
EP99108350A
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German (de)
English (en)
Other versions
EP0960659B1 (fr
Inventor
Takashi Togami
Giichi Tanaka
Hideki Mochigi
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.)
Mikasa Sangyo Co Ltd
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Mikasa Sangyo Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Publication of EP0960659A1 publication Critical patent/EP0960659A1/fr
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Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/10—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy
    • B06B1/16—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy operating with systems involving rotary unbalanced masses
    • B06B1/161—Adjustable systems, i.e. where amplitude or direction of frequency of vibration can be varied
    • B06B1/166—Where the phase-angle of masses mounted on counter-rotating shafts can be varied, e.g. variation of the vibration phase
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
    • E01C19/30—Tamping or vibrating apparatus other than rollers ; Devices for ramming individual paving elements
    • E01C19/34—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight
    • E01C19/38—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight with means specifically for generating vibrations, e.g. vibrating plate compactors, immersion vibrators
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/02—Improving by compacting
    • E02D3/046—Improving by compacting by tamping or vibrating, e.g. with auxiliary watering of the soil
    • E02D3/074—Vibrating apparatus operating with systems involving rotary unbalanced masses

Definitions

  • This invention is related to a travel control device for a vibrating plate compactor used for compacting the paved road surfaces, and more particularly to a travel control device for a vibrating plate compactor wherein the rotational phase of one of the two eccentric rotors rotating on a pair of parallel axes is changed relative to the other eccentric rotor and the compactor is moved forward/backward by the synthesized vector thereof.
  • This type vibrating plate compactor generally known in the prior art has a pair of eccentric rotors, the rotational phase of one rotor being variable relative to the other rotor and its vector moving the device forward or backward.
  • a device which uses hydraulic pressure to switch the travel direction forward or backward in order to change the rotational phase of an eccentric rotor is known from prior references such as Japanese Patent Kokai Nos. Sho 55/139884, Sho 63/60306, Hei 1/260107, and Hei 7/286306.
  • the compactor according to Japanese Patent Kokai Hei 1/260107 is provided with piston rods which can maintain the neutral state by springs on both sides inside the driven shaft, pistons and cylinders on both sides of the piston rod, connecting the cylinders and the outside pressure source to charge the pressure oil to one of the cylinders from the outside source to move the piston rod.
  • This compactor is also problematic in that the hand-operated pump used for supplying pressure into respective cylinders requires large force and the switching operation is so heavy that heavy weight compactors cannot be used.
  • the compactor according to Japanese Patent Kokai Sho 63/60306 is provided with a piston and a cylinder at one end of the piston rod inside the driven shaft, and the cylinder is connected to a three-way switch valve in the directions of forward, backward and neutral positions and a hydraulic pump circuit to always return these valves to the neutral position by the spring force.
  • the pressure of this hydraulic pump is used to supply pressure to the cylinder via the valves on the forward and backward sides.
  • the compactor according to Japanese Patent Kokai Hei 7/286306 is similar to the compactor disclosed in Japanese Patent Kokai Hei 1/260107 in that it is provided with a piston rod maintained neutral by springs on both sides in the driven shaft, and pistons and cylinders are respectively provided at both ends of the piston rod.
  • a hydraulic pump circuit provided with a three-way valve which can be switched to the forward, backward and neutral directions is connected to both cylinders as an outside source to supply the oil from the valve to respective cylinders in order to switch the piston rod to any one of the three directions.
  • the invention aims to offer a novel vibrating plate compactor which can set the travel lever at an arbitrary position between the fastest forward speed and the fastest backward speed for traveling the compactor at a desired speed event when the compactor is heavier than 500 kg by using a hydraulic pump circuit provided with a servo function as an outside pressure source for the piston rod to change the rotational phase of one of the eccentric rotors in a vibrating plate generator.
  • the travel control device for the vibrating plate compactor is characterized by the provision of a piston to receive at one end thereof the mechanical return force applied from the direction of the piston rod inside the cylindrical body, and a servo valve mechanism to supply oil from a hydraulic pump outside the body to the other end of the piston to resist the mechanical return force from the direction of the piston rod.
  • Said travel control device is preferably provided with a piston at one end of the cylindrical body to receive at one end thereof the mechanical return force from the direction of the said piston rod, a push rod for switching the travel direction between forward and backward directions at the other end of said body, a spool for the servo valve mechanism at the center of the said body to charge oil from the hydraulic pump positioned outside the body to the other end of the piston in order to resist the mechanical return force, and springs respectively between said piston and said push rod.
  • a passage for the pressure oil on the side of the vibration generator to guide the oil into the piston as a mechanical return force is applied from the direction of the piston rod of the vibration generator
  • another passage on the pump side to supply oil from the hydraulic pump outside the body to the outside of said piston to resist said mechanical return force.
  • the body supporting said spool is preferably constructed by providing a first passage to supply oil from the hydraulic pump to the outside of the piston via a concave groove cut on the outer periphery of the spool as the spool travels laterally by operation of the push rod, and a second passage on the tank side to send oil returned from the outside of said piston through said first passage to the tank via another concave groove cut on the outer periphery of the spool.
  • the present compactor basically comprises a vibration generator 1 shown in Fig. 1 and a travel control device 20 shown in Fig. 2 provided with a hydraulic servo valve mechanism for switching the direction of thrust generated by the vibration generator 1 to the device to forward or backward directions.
  • the vibration generator 1 has a drive shaft 3 to which rotation is transmitted via a pulley 2 from an engine not shown, and a driven shaft 4 which is positioned parallel to the drive shaft 3.
  • An eccentric rotor 5 is fixedly mounted on the drive shaft 3 and a similar eccentric rotor 6 is fixed axially to the driven shaft 4 in such a way that the phase may be varied relative to said eccentric rotor 5.
  • a driven gear 7 which is rotatable with the shaft 4 and fixed axially to prevent travel in the axial direction.
  • the driven gear 7 is transmitted rotation from the drive gear 8 of the drive shaft 3.
  • Said driven gear 7 is provided a spiral groove 10 on the inner wall of a boss 9 inclined in respect of the axis of the boss 9.
  • Said driven gear 4 is shaped like an open barrel with elongated holes 11 cut on the opposing walls at the position of said driven gear 7 respectively along the axial direction.
  • a piston rod 12 is inserted rotatably and movably in the axial direction inside the driven shaft 4.
  • the piston rod 12 has a boss 13 of a size to allow sliding inside the driven shaft 4 at one end and a piston 15 at another end via a bearing 16.
  • a hydraulic cylinder 18 On the outside of a vibrating case 17 to one end of which is axially fixed the driven shaft 4 is provided a hydraulic cylinder 18 inserted with said piston 15.
  • a knock pin 19 to perpendicularly cross the axial direction of the rod 12, and both ends of the knock pin 19 are fit inside the spiral groove 10 on the inner wall of said driven shaft 4 through the elongated hole 11 of said driven shaft 4.
  • the hydraulic cylinder 18 inserted with the piston 15 at one end of the piston rod 12 is connected to one end of said travel control device 20 provided outside.
  • the device 20 imparts resistance against said mechanical return force inside said hydraulic cylinder 18 by utilizing the pressure oil from an outside hydraulic pump 41, and also functions to push the piston rod 12 to the left (forward) side of Fig. 1 by overcoming said mechanical return force.
  • the device 20 is constructed with a push rod 22 inserted through a right chamber 21a at one end of the body 21 to connect the outer end thereof with a travel lever 23, a spool 24 inserted into the central chamber 21b to be moved by the push rod 22, and a piston 29 inserted into the left chamber 21c at the other end to be moved by the spool 24, and is further provided with a passage 45 on the vibration generator side connected to the hydraulic cylinder 18 of the vibration generator 1 inside the center chamber 21b provided with the above mentioned spool 24.
  • the inside of the right chamber 21a of the body 2 is shaped like a cylinder 26, and the push rod 22 having a flange 22a at the inside end is inserted slidably therethrough,
  • One end of the rod 22 provided with said flange 22a is also shaped like a cylinder 22b,
  • a spring bearing 25 having a boss 25a engaged with the flange 22a at the right and a flange 25b abutting upon the inner wall of the center chamber 21b on the left.
  • a spring 27 is inserted between the left flange 25b of the spring bearing 25 and the right and of the cylinder 26 inside said right chamber 21a to support said push rod 22 in a neutral position.
  • a hydraulic cylinder 28 inside the left chamber 21c of said body 21 provided with a piston 29 inside.
  • a rod 30 extending to the right side of the piston 29 is inserted in a freely slidable fashion into a bearing 31 provided on the side of the center chamber 21b of the left chamber 21c.
  • the right end of the rod 30 facing the center chamber 21b is shaped as a cylinder 30a inside which is positioned a spring 32 with one end extending into the center chamber 21b.
  • a hole 33 connecting the right chamber 21a and the left chamber 21c on the same axis is bored in the center chamber 21b of the body 21, and the spool 24 is slidably positioned inside the hole 33.
  • the portion between the flange 34a and the push rod 22 provided on the right hand side outer periphery of the spool 24 is supported by a spring 35 placed inside the cylinder 22b of the push rod 22.
  • the portion between the flange 34b provided on the left side outer periphery of the spool 24 and said piston rod 30 is supported by the spring 32 positioned inside the cylinder 30a of said piston rod 30. Therefore, said spool 24 is supported by a uniform spring pressure at the prescribed center position of the center chamber 21b by the left spring 32 and the right spring 35.
  • the length of the hole 33 inside the center chamber 21b for inserting the spool is slightly shorter than the distance between the flanges 34a and 34b provided on the left and the right outer peripheries of the spool 24, so that when the spool 24 is maintained at the prescribed center position of the center chamber 21b by the springs 32 and 35 on both sides, a short concave portion 37 is created with an interstice 36a between the right end of the hole 33 and the right flange 34a of the spool 24.
  • a long concave portion 38 with the interstice 36b to allow entry of the right end of said piston rod 30 is provided between the left end of the hole 33 and the left flange 34b of the spool 24 a long concave portion 38 with the interstice 36b to allow entry of the right end of said piston rod 30.
  • a pair of concave grooves 39, 40 are provided with a prescribed interval at the center of said spool 24.
  • a passage 42 connecting to a pump side port P of said hydraulic pump 41 and extending from the side of the center chamber 21b toward the hole 33 at a concave groove 39 on the right.
  • a passage 45 on the vibration generator side connecting with the hydraulic cylinder 18 of the piston rod 12 in said vibration generator 1, the passage being parallel to the pump side circuit 42 connecting with the pump side port P of the hydraulic pump 41.
  • another passage 46 for oil pressure provided with a check valve 47 leading to the right side of the piston 29 in the hydraulic cylinder 28 through the left chamber 21c from the center chamber 21b.
  • the numeral 48 in Fig. 4 denotes a relief valve for discharging the air mixed in the hydraulic cylinder 18 of the piston rod 12 in said vibration generator 1.
  • the lever 23 of the travel control device 20 When using a compactor as constructed above by maintaining the compactor in a neutral position, the lever 23 of the travel control device 20 is kept neutral as shown in Fig. 2.
  • the spool 24 of the device 20 is supported at the center of the center chamber 21b by the spring pressure of the springs 32, 35 on the left and the right sides, and the passage 43 for supplying pressure to the left side of the piston 29 in the hydraulic cylinder 28 is between the concave grooves 39, 40 on the left and the right of the spool 24.
  • the pump side passage 42 is therefore closed.
  • the push rod 22 on the right side of the spool 24 receives the spring pressure toward right by the spring 35, but the spring pressure at the springs 27 and 35 attains an equilibrium because of the spring pressure toward left by the outside spring 27 of the outside spring bearing 25.
  • the device maintains its neutral state even when the operator removes his/her hands from the lever 23 connected to the push rod 22.
  • the piston rod 12 of the vibrating plate generator 1 shown in Fig. 1 is positioned at the center of the driven shaft 4 at this time, but as the driven gear 7 continues its rotation, mechanical return force is imparted to the piston rod 12 toward the right hand side.
  • the pressure oil inside the hydraulic cylinder 18 of the vibration generator 1 passes through, the passage 45 on the side of the generator in the center chamber 21b of the device 20 and the passage 46 for oil pressure and flows to the right hand side of the piston 29 inside the hydraulic cylinder 28, to thereby push the piston 29 toward the left side of the hydraulic cylinder 28 from the position shown in Fig. 2.
  • the pump side passage 42 again becomes positioned at the intermediate position of the left and the right concave grooves 39, 40 as shown in Fig. 2, and blocks the flow of pressure oil from the pump side passage 42 to the left side of the piston 29 via the passage 43 for pressure oil.
  • Oil from the passage 45 on the vibration generator side again flows through the passage 46 into the right hand side of the piston 29 to push the piston 29 back to the left side.
  • the lever 23 When moving the device from the neutral to the forward position, the lever 23 should be pushed until it reaches the fastest forward position in the left at the figure or be maintained at an arbitrary position for setting the speed between the neutral and the fastest forward positions.
  • the device advances at a prescribed speed corresponding to the angle of inclination of the lever 23.
  • the device advances as described above, but the spool 24 repeats the above mentioned lateral movement corresponding to the intensity of the force of the spring 35 which pushes the push rod 22 to the left.
  • This increases the oil amount on the left rather than on the right of the piston 29 inside the cylinder 28, and this status is transmitted to the cylinder 18 of the generator 1 from the passage 45, to thereby advance the device at a predetermined speed.
  • the lever 7 When the device is moved backward, the lever 7 is pulled to the fastest backward speed position to the right of the figure from the neutral position as shown in Fig. 7, or maintained at an arbitrary angle between the neutral position and the fastest backward speed.
  • the push rod 22 is pulled to the right by resisting the pressure of the spring 27 on the outer periphery of the spring bearing 25 as shown in Fig. 7, and the spring force of the right spring 35 becomes lowered.
  • This moves the spool 24 to the right and connects the left concave groove 40 with the passage 43, which is at this time cut from the pump side passage 42. Since the left groove 40 is connected with the tank side passage 44 leading to the port T on the tank side, the oil on the left of the piston 29 is discharged toward the tank from the passage 43 via the concave groove 40 and the passage 44 on the tank side.
  • the device When the lever 23 is held at an arbitrary position before reaching the fastest backward speed position, the device recedes at a prescribed speed corresponding to the angle of inclination of the lever 23.
  • Figs. 9 through 14 show another construction of a travel control device 50 according to the second embodiment of the present invention
  • the device 50 consists of a piston 66 placed inside a cylinder 58 comprising a body 51, a push rod 52 manipulated by an outside travel lever 53 inserted into the left chamber 58a of the cylinder 58, and a spool 59 positioned in such a way to be inserted into the left side of the piston 66.
  • a passage 90 connecting with the hydraulic cylinder 18 of the vibration generator 1.
  • a passage 60 on the pump side to connect with a hydraulic pump 55 and a passage 61 on the tank side.
  • Said piston 66 is provided with an elongated hole 63 along its axis at the right end thereof, through which is inserted a vertical barrel 65 crossing perpendicular with the axis of the piston 66.
  • the piston 66 therefore moves laterally along the length of the elongated hole 63 without revolving inside the body 51.
  • the vertical barrel 65 has orifices 64a, 64b and is connected at its top with the tank side passage 61.
  • a spring 62 Inside the right chamber 58b of the cylinder between the right end of the piston 66 and a plug 56 closing the right end of the body 51.
  • a long concave groove 68 to receive the oil from the pump side passage 60 of said hydraulic pump 55, an orifice 69 at the left end of the groove 68 to guide the oil from the groove 68 toward the outer periphery of the inner spool 59, and a short concave groove 70 on the inner periphery of the piston 66 on the right side spaced slightly apart from the orifice 69.
  • the above mentioned left section 66a of the piston has an orifice 75 on the right wall 71 and a short concave portion 84 having an inner diameter to allow insertion of a flange 86 between the push rod 52 and the spool 59 at the left end.
  • the spool 59 is provided at the end of the push rod 52 inserted into the left chamber 58a through the plug 57 closing the left end of the body 51, and is placed inside a cylindrical chamber 67 within the left section 66a of the piston.
  • spring 72 is provided between the right end of the spool 59 in the chamber 67 and the right wall 71 of the left section 66a of the piston to impart the force to the spool 59 to constantly push to the left.
  • a pin 74 is fixed to the piston 66 at both ends of the hole to cross the axis of the spool 59 perpendicularly, The pin 74 stops the spool 59 from slipping ant of the left section 66a.
  • a partition wall 76 to divide the inside of the spool 59 into passages 77, 78.
  • a concave groove 79 is cut on the outer periphery of the spool 59 on the left side of the wall 76 and a concave groove 80 on the outer periphery of the spool 59 on the right side of the wall 76.
  • an orifice 81 to connect the groove 70 on the inner periphery of the left section 66a of the piston and the left passage 77 inside the spool 59.
  • An orifice 82 is provided on the groove 80 on the outer periphery of the spool 59 connecting with the chamber 78 on the right side of the wall 76 in the spool 59.
  • an orifice 83 connecting with the left chamber 58a of the cylinder on the left side of the piston 59 by passing through a flange 86 between the push rod 52 and the spool 59.
  • valve 85 is closed when the piston 66 and the spool 59 travel to the right in the body 51 as shown in Figs. 9 and 12, but when the piston 66 moves to the farthest left inside the body 51, it contacts said vertical barrel 65 and opens to release a part of the pressure oil in the right chamber 58b of the cylinder to the tank side passage 61 from the barrel 65.
  • the travel lever 53 is set at the neutral position as shown in Fig. 9 when the device is to be maintained in the neutral state, and the position is held manually,
  • the piston 66 is positioned at the intermediate point of the cylinder 58 at this time, In this state, the pressure oil receiving the mechanical return force of the vibration generator 1 is charged into the right chamber 58b of the cylinder on the right side of the body 51 through the passage 90.
  • the piston 66 moves to the left by the pressure oil and the spring 62 as shown in Fig. 10, opens the circuit to charge the oil from the passage 60 on the pump side of the hydraulic pump 55 to the left of the piston 66, and the pressure increases inside the left chamber 58a of the cylinder.
  • the piston 66 is therefore pushed back to the right as shown in Fig. 11.
  • the oil from the left chamber 58a of the cylinder passes through the spool 59 to the tank side passage 61 of the hydraulic pump 55 from the barrel 65 and lowers the pressure inside the left chamber 58a on the left of the piston 66.
  • the piston 66 is then pushed again toward the left by the oil charged into the right chamber 58b of the cylinder and the force of spring 62 as shown in Fig. 10.
  • the travel lever 53 When the device is to be moved forward from the neutral position, the travel lever 53 is pushed until the fastest forward position on the left side of the figure is reached or is maintained at an arbitrary angle for setting the speed prior to that position.
  • the piston 66 repeats the lateral movement as described above at the position with the spool 59 standing still at the end of the push rod 52.
  • the travel lever 53 When the device is brought backward from the neutral position, the travel lever 53 is pushed to the fastest backward speed position on the left side of the figure as shown in Fig. 13, or is maintained at an arbitrary angle for setting the speed prior to that position.
  • the spool 59 is pulled toward the left by the push rod 52, or the circuit to charge the oil from the left chamber 58b of the cylinder at the left of the piston 66 to the tank side passage 61 of the hydraulic pump 55 opens and the oil charged from the vibration generator 1 through the passage 90 increases the pressure inside the right chamber 58b of the cylinder on the right side of the piston 66.
  • the piston 66 is pushed back to the left as in Fig. 10, but since the push rod 52 is being pulled toward the backward direction (to the left) by the travel lever 53, the spool 59 immediately moves to the left as shown in Fig.
  • the piston 66 repeats the lateral movement as described above with the spool 59 standing stationary at the end of the push rod 52, to bring the device backward at the prescribed speed.
  • the travel control device for the vibrating plate compactor is provided with a piston to receive the mechanical return force from the vibration generator in the cylindrical body on one hand, and a servo valve spool which can supply the pressure from the hydraulic pump to resist the mechanical return force acting on the piston by manipulating the push rod on the other, so that the device can supply the pressure to one side of the piston from the hydraulic pump to resist the powerful mechanical return force from the vibration generator even when the compactor is very large with its weight exceeding 500 kg, and the switching operation of the travel lever may be made lighter, It is also possible to control the speed at any position in the forward or backward directions with the travel lever in operation.
  • the construction of the first embodiment provides a spool between the piston and the push rod via a spring in order to enable transmission of the force to operate the push rod to the spool via a spring and to further make the switching operation of the travel lever lighter.
  • the travel lever maintains its neutral condition automatically, thus enhancing safety by eliminating any risks of the device running out of control.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Road Paving Machines (AREA)
  • Fluid-Pressure Circuits (AREA)
EP19990108350 1998-05-13 1999-04-28 Système de commande pour le déplacement d'un compacteur à plaque vibrante Expired - Lifetime EP0960659B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP14666398 1998-05-13
JP14666398A JP3318528B2 (ja) 1998-05-13 1998-05-13 振動締固め機の前後進操作機構

Publications (2)

Publication Number Publication Date
EP0960659A1 true EP0960659A1 (fr) 1999-12-01
EP0960659B1 EP0960659B1 (fr) 2000-08-23

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Application Number Title Priority Date Filing Date
EP19990108350 Expired - Lifetime EP0960659B1 (fr) 1998-05-13 1999-04-28 Système de commande pour le déplacement d'un compacteur à plaque vibrante

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EP (1) EP0960659B1 (fr)
JP (1) JP3318528B2 (fr)
DE (1) DE69900009T2 (fr)
ES (1) ES2151766T3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002087789A1 (fr) 2001-05-02 2002-11-07 Wacker Construction Equipment Ag Commande pour systeme de reglage de desequilibre dans un dispositif de compactage du sol
US6981558B2 (en) 2001-05-02 2006-01-03 Wacker Construction Equipment Ag Controller for an unbalanced mass adjusting unit of a soil compacting device
EP2789862A1 (fr) * 2013-04-10 2014-10-15 ABI Anlagentechnik-Baumaschinen-Industriebedarf Maschinenfabrik und Vertriebsgesellschaft mbH Générateur de vibrations pour machines de construction
US9289799B2 (en) 2013-04-10 2016-03-22 Abi Anlagentechnik-Baumaschinen-Industriebedarf Maschinenfabrik Und Vertriebsgesellschaft Mbh Vibration exciter for construction machines
CN108005056A (zh) * 2017-12-06 2018-05-08 郑州诚合信息技术有限公司 一种便于移动的降尘式夯土机

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4510321B2 (ja) * 2001-04-19 2010-07-21 三笠産業株式会社 振動締固め機の前後進切換ハンドポンプ
DE102004015589A1 (de) * 2004-02-29 2005-09-15 Bomag Gmbh Steuerung und Steuerungsverfahren für eine Vibrationsmaschine
EP1568420B1 (fr) 2004-02-29 2018-08-15 BOMAG GmbH Dispositif et méthode de commande pour une machine vibrante
DE102012025378A1 (de) 2012-12-27 2014-07-03 Wacker Neuson Produktion GmbH & Co. KG Schwingungserreger für bodenverdichtungsvorrichtungen
CN110124975A (zh) * 2019-05-30 2019-08-16 湖北普爱药业有限公司 一种料包拍平装置
WO2022249341A1 (fr) * 2021-05-26 2022-12-01 三笠産業株式会社 Reniflard pour dispositif vibreur

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4356736A (en) * 1979-03-09 1982-11-02 Wacker-Werke Gmbh & Co. Kg Imbalance-oscillation exciter
US4771645A (en) * 1986-06-27 1988-09-20 Dynapac Ab Vibrating plate compactor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2513586B2 (ja) 1994-04-18 1996-07-03 三笠産業株式会社 振動締固め機

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4356736A (en) * 1979-03-09 1982-11-02 Wacker-Werke Gmbh & Co. Kg Imbalance-oscillation exciter
US4771645A (en) * 1986-06-27 1988-09-20 Dynapac Ab Vibrating plate compactor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002087789A1 (fr) 2001-05-02 2002-11-07 Wacker Construction Equipment Ag Commande pour systeme de reglage de desequilibre dans un dispositif de compactage du sol
US6981558B2 (en) 2001-05-02 2006-01-03 Wacker Construction Equipment Ag Controller for an unbalanced mass adjusting unit of a soil compacting device
EP2789862A1 (fr) * 2013-04-10 2014-10-15 ABI Anlagentechnik-Baumaschinen-Industriebedarf Maschinenfabrik und Vertriebsgesellschaft mbH Générateur de vibrations pour machines de construction
US9289799B2 (en) 2013-04-10 2016-03-22 Abi Anlagentechnik-Baumaschinen-Industriebedarf Maschinenfabrik Und Vertriebsgesellschaft Mbh Vibration exciter for construction machines
CN108005056A (zh) * 2017-12-06 2018-05-08 郑州诚合信息技术有限公司 一种便于移动的降尘式夯土机

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DE69900009D1 (de) 2000-09-28
JPH11323817A (ja) 1999-11-26
ES2151766T3 (es) 2001-01-01
JP3318528B2 (ja) 2002-08-26
DE69900009T2 (de) 2001-04-05
EP0960659B1 (fr) 2000-08-23

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