US3556317A - Installation for handling bulk materials - Google Patents

Installation for handling bulk materials Download PDF

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Publication number
US3556317A
US3556317A US826211A US3556317DA US3556317A US 3556317 A US3556317 A US 3556317A US 826211 A US826211 A US 826211A US 3556317D A US3556317D A US 3556317DA US 3556317 A US3556317 A US 3556317A
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Prior art keywords
winch
bucket
winches
carriage
installation
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US826211A
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English (en)
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Lucien Rene Vidal
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Individual
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/46—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor
    • E02F3/48—Drag-lines

Definitions

  • the return cable is wound on a return winch which is connected by a clutch to winches on which are wound cables connected to the carriage and the bucket respectively and the clutch is operated to disconnect the return winch from the other winches when the latter rotate to wind-on their cables and to drive the return winch when they rotate in the opposite direction to pay out their cables.
  • PATENT'EU JAN] 9 ism SHEET 1 0? s PATENTEU JAN 19.9"
  • the present invention is concerned with a dragline of the kind comprising a bucket so suspended from a carriage running along a substantially horizontal girder that the bucket moves substantially parallel with the ground.
  • a dragline of the kind specified is mainly characterized in that the carriage is driven by a traction cable wound on to a first winch permanently connected to a second winch on which is wound a scraper cable connected to the leading edge of the bucket. whilst the bucket is driven at a the rear by a return or lifting cable. running over a reversing pulley borne by the carriage and incorporating a mobilestop adapted to cooperate with two fixed stops borne by the girder. this return cable being wound on to a third winch. and in that Advantageously. the bucket is formed by two lateral plates interconnected at the rear by a plate covering only the upper portion. the lower portion being formed by a pivoted flap which is resiliently loaded and moves in the opposite direction from the scraping direction.
  • the means for connecting or disconnecting the third winch (return winch) to or from the first two winches (carriage control and scraper winches) are formed by a unidirectional mechanism which can be associated with a clutch means.
  • the unidirectional drive mechanism comprises a pawl mounted on a spindle borne by the first two (carriage I and scraper) winches andresiliently applied against a.ratchet wheel connected to a bush freely mounted on the shaft of the third winch (carriage return winch) and bearing a clutch disc cooperating with clutch pads associated with the return winch.
  • the three winches and the bush are mounted on the same shaft and the three winches are mounted on 11 platform disposed at the top of the distributor.
  • the platform bearing a shaft whose lower portion is mounted on a plinth associated with the distributor and'comprising means for regulating the angular position of the horizontal girder.
  • FIG. I is a diagrammatic elevation of a firstembodiment of the dragline according to the invention.
  • these means comprise a clutch disconnecting the third winch from the first two winches when the latter rotate in the direction corresponding to the windingon of their cables (forward movement. and
  • the three winches are coaxial. and the third winch bears a friction ring cooperating with a friction band one end of which is connected to a spindle which is borne by the scraper winch and on which there acts one of the arms of a bellcrank pivoted on a spindle borne by the scraper winch, the other arm of the bellcrank bearinga spindle. to which the other end of the friction band is connected. and being formed with a slot through which there freely extends a finger carried by a disc loosely mounted on the scraper winch and rotation of which is slightly braked by brakeshoes borne by a yoke unitary with the frame.
  • the movements of the carriage over the girder can thus be automatically controlled.
  • the band brake control mechanism is associated with the carriage cable winch instead of being associated as stated hereinbefore.-with the scraper cable winch.
  • the winch for the lifting cable is provided with a series of peripheral teeth with which cooperates a double pawl whose rotation clockwise or anticlockwise is controlled by two electromagnets, one of which is adapted to control the lifting of the bucket and the other the lowering thereof.
  • the lifting of the bucket can be controlled manually. by energizing the corresponding electromagnet. or automatically. if the bucket is "planted" in the pile of aggregates.
  • the scraper cable runs. upstream of its winch. over a return pulley having means for detecting the tension of the cable and to emit a signal for energizing the electromagnet controlling the lifting of the bucket.
  • FIG. 2 is a diagrammatic view showing the disposition of the cables'in the dragline shown in FIG. I;
  • FIG. 3 is a diagrammatic. perspective view of the clutch of the dragline shown in FIG. 1;
  • FIG. 4 is a diagrammatic side elevation of the second embodiment of the dragline according to the invention
  • FIG. 5 is a partial plan view of FIG. 4;
  • FIG. 6 is a partially sectioned perspective view of the mechanism connecting the three winches of the dragline shown in F 10. 4. and a FIG. 7 is a diagrammatic perspective view of the dragline shown in FIG. 4. the carriages and bucket being shown in an intermediate position during the operational cycle.
  • a pyramidical distributor I has surfaces such as. 2 and 3. provided with detectors 4. 5 which are known devices to detect the level of the pile of aggregates reformed in the radial sectors associated with the sides 2. 3.
  • detectors 4. 5 are known devices to detect the level of the pile of aggregates reformed in the radial sectors associated with the sides 2. 3.
  • the part played by the detectors 4. 5 is disclosed in French Pat. application No. P.V. 109 filed in the name of Societe PROMAT on 30th May. 1967, now French Pat. No.
  • a pivoting base 6 Mounted at the top of the distributor l is a pivoting base 6 having a platform 7. Mounted on the platform 7 are an electric motor or a geared reduction motor 8 driving a sprocket wheel 10 through a chain 9, and also an assembly of common spindles 11 associated with a winch 12 for a carriage cable 13, a winch 14 for a scraper cable 15. a winch 16 for a lifiing of return cable 17, and a clutch 78 by means of which the winch 16 can be connected to the two winches l4 and 12, which always rotate together and could therefore be replaced by a single winch.
  • a girder 18 on which runs a carriage 19 on rollers 20. 21. the carriage 19 hearing a return pulley 22.
  • a front fixed stop 23 Disposed on the girder 18 are a front fixed stop 23. a rear fixed stop 24. and a return pulley 25; the platform 7 also bears a return pulley 26 and a return pulley 27 is mounted on the lower surface of the platform 7.
  • the lifting cable 17 includes a mobile stop 31 which can cooperate with the carriage 19 and with the two stops 23. 24 borne by the girder 18.
  • the dragline described hereinbefore operates as follows: let us suppose that the various members are situated in the positions shown in FIG. 1. if the reduction geared motor 8 is started to rotate clockwise the winches l4 and 12 rotate in the same direction, so that the scraper cable 15 and the carriage cable 13 are wound on to the winches 14 and 12.
  • the geared reduction motor 8 is then reversed, i.e., so that it rotates anticlockwise.
  • the result is that the lifting cable 17 is wound on and pulls at the carriage 19 to move it to the left as shown in FIG. 1, this movement being possible since the carriage cable 13 and the scraper cable 15 are unwound at the same speed from their winches 12 and 14.
  • a convenient way of stopping the motor 18 when the carriage l9 abuts the fixed stop 24 is to associate the carriage cable 13 with a sensing roller 32 operating a microswitch 33 when the carriage cable 13 acquires slack.
  • FIG. 3 shows a particularly advantageous embodiment which can be used in the dragline according to the invention.
  • FIG. 3 shows diagrammatically the geared reduction motor 8, the transmission chain 9 and the gearwheel the latter is keyed to the shaft 11 bearing the winch 12 on to which the carriage cable 13 is wound, the winch 14 on to which the scraper cable is wound and the winch 16 on to which the return and lifting cable 17 is wound, it being understood that the two winches 12 and 14 can be replaced by a single winch on which the cables 13 and 15 are wound.
  • the winch 14 has an attachment 34 bearing a spindle 35 to which one end 36 of a friction band 37 is connected, its other end 38 being connected to a spindle 39 borne by a bellcrank 40.
  • the bellcrank 40 is pivoted on a spindle 41 parallel with the spindle 35 and borne by the attachment 34.
  • One of the arms 42 of the bellcrank engages below the spindle 35, while the other arm 43 is formed with a slot 44 in which the end ofa spindle 45 engages.
  • This spindle 45 is borne by a disc 46 (shown broken away for reasons of convenience) loosely mounted on the winch 14 with which it can rotate, due to the mechanical connection formed by the-bellcrank 40.
  • Pads 47 bear on the sides ofthe disc 46yeach' of-the pads 47 forms a friction pad and is supported by.
  • a yoke 48 attached to the frame in a manner not shown.
  • the winch 16 has a ,fric tion,surface 49 cooperating with a friction band 37.
  • the device described hereinbefore. operates as follows: let us suppose. that at first the reduction geared motor 8 is inoperative, so that both the winches 12 and.14 are immobile.
  • the reduction geared motor 8 If the reduction geared motor 8 is; connected to rotate clockwise or in the direction indicated by the arrow AR shown in FIG. 3, it will drive the two winches l2 and 14 in the same direction.
  • the spindle 35 isd-riven in the same direction and via its end 36 the band 37 is applied against the friction surface 49; as the disc 46 is braked by the pads 47, the bellcrank 40 is tilted anticlockwise around its spindle 41, thus displacing in the same direction the end 38 of the friction band 37 which is applied over its whole surface against the friction surface 49; the winch 16 is therefore engaged with the winches l2 and 14 and the whole assembly, including the disc 46, rotates clockwise, i.e., in the direction indicated by the arrow AR; if during the displacement of the carriage 19 to the left as shown in FIG.
  • the stop 31 abuts the fixed stop 24 to prevent any further winding of the cable 17 on to the winch 16 connected to the winches 12 and 14, the clutch can slip for the purpose indicated hereinbefore in the description of the operation of the dragline, with reference to FIGS. 1 and 2.
  • the geared reduction motor 8 is connected to rotate anticlockwise, i.e., in the direction indicated by the arrow AV in FIG. 3, the winches l2 and 14 rotate in the same direction.
  • the front portion (FlG. 3) of the band 37 is disengaged from the friction surface 49 and the bellcrank tilts clockwise and is entrained in the direction indicated by the arrow AV by the spindle 41 and retained by the slot 44, the disc 46 being stopped and braked by the pads 47. untensioning the other portion of the band so that the disengaged position is reached.
  • clutching is so performed as to be engaged whenever the winches 14 and 12 rotate in the direction indicated by the arrow AR and released whenever the winches rotate in the direction AV.
  • This mechanism comprises a number of peripheral teeth 50- 52 etc. which are uniformly spaced and which cooperate with a double pawl 53 which pivots around a spindle 54 fixed in relation to the frame and has engaging claws 55, 56; the rotation of the pawl is controlled by two electromagnets 57, 58.
  • the lifting of the bucket is controlled by the electromagnet 57 which can be energized either by a supply circuit controlled by a pushbutton, or automatically during the planting" of the bucket 28, it being understood that one or the other control methods for lifting the bucket is brought into operation when the carriage moves forwards, i.e., towards the distributor 1.
  • Control of the release of the bucket 28 during "planting" in a pile of materials is also performed by the energization of the electromagnet 57 and results in the operation described hereinbefore.
  • the energization of the electromagnet 57 is initiated by a signal obtained by means of a mechanism associated with the return pulley 26 which detects overtensioning of the scraper cable.
  • This mechanism can be formed by a spring associated with the'shaft of the return pulley to produce resilient suspension of the shaft.
  • the return pulley 26 can move in opposition to the spring (not shown) and close a contact inserted in the supply circuit of the electromagnet 57.
  • the electromagnet 58 enables the lowering of the bucket to be controlled at any time during operation by manual control, but only during the return travel of the carriage.
  • the cable 17 is wound on to the winch 16 and the cables 13 and 15 are paid-off from their winches 12 and 14, since the clutch 78 is in the engaged position.
  • the electromagnet 58 is energized, the double pawl tilts anticlockwise and its operational claw 55 abuts one of the teeth 50-52 stopping the rotation of the winch 16.
  • the clutch slips, but the carriage 19 continues to move to the left as seen in FIG. 1 as a result of the weight of the descending bucket, such descending movement being produced by the paying-off of the cables 13 and 15.
  • the bucket isv formed by two plates interconnected by pivots 29 and 60, the bucket also having a rear plate 61 which covers only the upper portion of the'bucket.
  • Articulated on the pivot-60 is a flap 62 which is directed downwardly and towards the front of the bucket 28 and is continued at the rear by claws 63, a spring being disposed'between the claws 63 and a flange 64 of the plate 61.
  • the clutch 78 described hereinbefore can be of the electromagnetic, pneumatic or hydraulic kind.
  • the double pawl 53 can be replaced by an electromagnetic, pneumatic, hydraulic or mechanical brake.
  • the installation according to the invention mainly comprises a platform 101 connected to a vertical pivot 102 whose lower portion 102' is mounted in bearings 103, 112 forming part of a plinth 104 disposed on a known distributor (not shown in FIG; 4).
  • the lower surface of the platform 101i bears a motor 105 whose shaft 106 bears a pinion 107 meshing with a chain 108 whose ends are attached at points109, 110 to a circular plate 111 connected to the plinth 104.
  • This device enables the angular position of the platform 101 to be controlled.
  • This mechanism comprises a geared reductionmotor 113 whose shaft 114 bears a toothed pinion 115 and also comprises two bearings 116, 117 in which a shaft 118 is mounted.
  • Mounted on the shaft 118 are two connected winches 119, 120, one of which, the winch 119, bears a toothed disc 121 connected to the pinion 115 via a chain 122.
  • Also mounted on shaft 118 is a ratchet wheel 123 with which a pawl 124 cooperates.
  • the wheel 123 bears a bush 125 bearing a clutch disc 126 disposed between two clutch linings 127, 128, one of which is borne by a winch 129 looselymounted on the shaft 118, and the other by a disc 130 coaxial with the shaft 118 and urged towards the winch 129 by return springs 131, 132.
  • a brakeshoe 133 on which a compression spring 134 acts.
  • Attached to the platform 101 is a horizontal girder 135 retained in place by guys, as 136. attached to the upper end of the shaft 102.
  • a stop carriage 140 also runs on the girder on rollers, 141, 142.
  • the horizontal girder bears a stop 143 adapted to cooperate with the stop carriage 140.
  • a second stop 144 is mounted in the upper portion of the girder and is also adapted to cooperate with the stop carriage.
  • the upper portion of the bucket carriage is disposed at a lower level than the second stop 144, while the height of the stop carriage is adequate for it to abut this stop which, on the other hand. allows the bucket carriage 137 to pass in the direction of the platform.
  • the horizontal girder also bears at its free end a return pulley 145. p
  • the bucket 146 is suspended by its rear portion from a bucket cable 147 which runs over areturn pulley 148 and is attached at 149 to the stop carriage. Attached at a place 150 thereof is a return cable 151 which runs over the return pulley 145 and is wound on to the return winch 129.
  • the bucket carriage 137 is connected at 152 to one end of the carriage cable 153 which is wound on to the winch 119 to which its other end is attached.
  • the bucket 146 is connected at 154 to a scraper cable 155 which runs over a return pulley 156 and is wound on to the winch 120 to which the other end of the scraper cable is attached.
  • FIG. 4 shows the various members in their respective staning positions.
  • the geared reduction motor 113 is rotated anticlockwise the toothed wheel 121 rotates in the direction indicated by the arrow 1'57 and simultaneously drives the two winches 119, 120 in the same direction.
  • the pawl 124 resiliently articulated on the spindle 158 borne by the winch 120 can slide over the teeth of the ratchet wheel 123, so that the rotation of the two winches 110, 120 is not transmitted to the winch 129.
  • the scraper cable 155 and the carriage cable 153 are respectively wound on to the winches 1 19, 120.
  • the bucket carriage 137 moves in the direction of the platform 101 and the bucket 146 describes a substantially horizontal trajectory, i.e., skims over the ground.
  • the bucket retains, via the bucket cable 147, the stop carriage against the bucket carriage 137. so that while the latter moves towards the platform 101 the stop carriage is displaced in the same direction as a result of the winch 129 rotating freely on the shaft 118 and enabling the return cable to be paid-out, the pad 133 maintaining a certain degree of tensioning of this cable to prevent any slack.
  • the carriage cable 153 and the scraper cable 155 continue to be wound on to their respective winches 119, 120 and the distance between the bucket car-- riage 137 and the stop carriage 140 increases, 'so that the bucket 146, whose cable 147 is connected to the stop carriage 140 describes an ascending trajectory until it is disposed just below the girder 135, a limit switch (not shown) then cutting off the supply to the geared reduction motor 113 and reversing its direction of rotation.
  • the geared reduction motor 113 then rotates clockwise and the toothed wheel 121 rotates in the same direction, driving the two winches 119, 120 in the direction indicated by the arrow 159.
  • the pawl 124 driven by the spindle 158 rotates in the same direction and drives the ratchet wheel 123 and also the clutch disc 126. so that the winch 129 is also entrained and rotates in the same direction as the two winches 119, 120.
  • the return cable 151 is wound on to its winch 129. while the carriage cable 153 and the scraper cable 155 are paid-out at the same speed as the winches 119, 120.
  • the pull exerted on the stop carriage 140 is transmitted, via the bucket cable 147 running over the return pulley 148, to the bucket carriage 137 and to the bucket 146, which are both also displaced towards the stop 143, the distance between the stop carriage 140 and the bucket carriage 137 beneath which the bucket 146 is situated being maintained, so that the bucket is withdrawn in its raised position without being able to descend, the clutch 126 exerting adequate torque.
  • the weight of the bucket 146 acting on its bucket cable dis places the bucket carriage 137 until it bears against the stop carriage 140, the bucket 146 descending to its starting position, when a limit contact reverses the supply to the geared reduction motor 113, thus starting a fresh operational cycle.
  • An installation for handling bulk materials comprising a compartmented distributor tower, a substantially horizontal girder rotatable about the vertical axis of the tower at the upper end thereof, a carriage movable along said girder, a bucket suspended below said carriage, a first winch, a traction cable connected at one end of said carriage and at the other end to said first winch, a second winch integrally connected to said first winch, a scraper cable connected at one end to the leading edge of said bucket and at the other end to said second winch, a third winch rotatable independently of said first and second winches, a return cable connected at one end to the rear of said bucket passing over a pulley on said carriage and a pulley on said girder and connected at the other end to said third winch, two fixed stops on said girder, a mobile stop carried by said return cable and movable between said fixed stops and means to connect said first and second winches to said third winch when they rotate in a direction to pay out their cables and to disconnect the
  • said means comprises a clutch disconnecting the third winch from the first two winches when the latter rotate in the direction corresponding to the winding-on of their cables, and connecting the third winch to the first two winches when the latter rotate in the direction corresponding to the unwinding of their cables.
  • An installation as claimed in claim 1 comprising a series of peripheral teeth on said third winch, a double pawl adapted to cooperate with said teeth, an electromagnet adapted to rotate said pawl in one direction to engage said teeth to control the lifting of said bucket and a second electromagnet adapted to rotate said pawl in the opposite direction to control the lowering of said bucket.
  • An installation as claimed in claim 1 including means for detecting the tension in the cable connected to the carriage and to emit a signal to energize an electromagnet controlling the lifting of the bucket.
  • said unidirectional drive mechanism comprises apawl mounted on a spindle borne by the first two winches and resiliently applied against a ratchet wheel connected to a bush freely mounted on the shaft of the third winch and bearing a clutch disc cooperating with clutch pads associated with said third winch.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Control And Safety Of Cranes (AREA)
  • Ship Loading And Unloading (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
US826211A 1968-05-22 1969-05-20 Installation for handling bulk materials Expired - Lifetime US3556317A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR152700 1968-05-22
FR182594 1968-12-31

Publications (1)

Publication Number Publication Date
US3556317A true US3556317A (en) 1971-01-19

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US826211A Expired - Lifetime US3556317A (en) 1968-05-22 1969-05-20 Installation for handling bulk materials

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US (1) US3556317A (enrdf_load_stackoverflow)
JP (1) JPS5116686B1 (enrdf_load_stackoverflow)
BE (1) BE733425A (enrdf_load_stackoverflow)
CH (1) CH491032A (enrdf_load_stackoverflow)
DE (2) DE6920153U (enrdf_load_stackoverflow)
ES (1) ES367362A1 (enrdf_load_stackoverflow)
GB (1) GB1203896A (enrdf_load_stackoverflow)
SE (1) SE340237B (enrdf_load_stackoverflow)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3851749A (en) * 1972-05-23 1974-12-03 L Vidal Drag lines for concrete
US3908838A (en) * 1973-09-21 1975-09-30 Elba Werk Maschinen Gmbh & Co Dragline conveyor
US4099631A (en) * 1976-05-15 1978-07-11 Firma Johannes Fuchs Scraper
US4153165A (en) * 1976-05-15 1979-05-08 Firma Johannes Fuchs Scraper
US4353674A (en) * 1980-05-30 1982-10-12 United Conveyor Corporation Drag bucket apparatus for separating pieces of solid material from a liquid in a receiving tank
US4954036A (en) * 1988-07-15 1990-09-04 Walker Harold A Variable height silo charge system
US6038795A (en) * 1998-04-22 2000-03-21 Navarro; Pablo Dredger with lockable rear door
US20140048758A1 (en) * 2012-08-17 2014-02-20 Ryan Kristian Oland Fence Stretcher
US20170316844A1 (en) * 2016-05-02 2017-11-02 Kurion, Inc. Tank cleaning system
US11440064B2 (en) 2017-08-17 2022-09-13 Veolia Nuclear Solutions, Inc. Systems and methods for tank cleaning
US11649606B2 (en) * 2020-06-19 2023-05-16 Caterpillar Inc. Dragline bucket
CN117682421A (zh) * 2024-02-04 2024-03-12 河南斯玛特起重机有限公司 一种起重机的吊具防倾斜装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4432641A1 (de) * 1994-09-14 1996-03-21 Stetter Gmbh Radial-Schrappwerk
CN117738257B (zh) * 2024-02-21 2024-05-17 内蒙古铁辰智能装备有限公司 一种露天矿用卡车装载对位装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1002732A (en) * 1910-05-31 1911-09-05 Charles A Morris Excavating system.
US1748931A (en) * 1929-06-03 1930-02-25 Bucyrus Erie Co Bank grader
SE416419B (sv) * 1977-11-28 1980-12-22 Asea Ab Sett att styra massaflode i blekeri samt anordning for settets utforande

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1002732A (en) * 1910-05-31 1911-09-05 Charles A Morris Excavating system.
US1748931A (en) * 1929-06-03 1930-02-25 Bucyrus Erie Co Bank grader
SE416419B (sv) * 1977-11-28 1980-12-22 Asea Ab Sett att styra massaflode i blekeri samt anordning for settets utforande

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3851749A (en) * 1972-05-23 1974-12-03 L Vidal Drag lines for concrete
US3908838A (en) * 1973-09-21 1975-09-30 Elba Werk Maschinen Gmbh & Co Dragline conveyor
US4099631A (en) * 1976-05-15 1978-07-11 Firma Johannes Fuchs Scraper
US4153165A (en) * 1976-05-15 1979-05-08 Firma Johannes Fuchs Scraper
US4353674A (en) * 1980-05-30 1982-10-12 United Conveyor Corporation Drag bucket apparatus for separating pieces of solid material from a liquid in a receiving tank
US4954036A (en) * 1988-07-15 1990-09-04 Walker Harold A Variable height silo charge system
US6038795A (en) * 1998-04-22 2000-03-21 Navarro; Pablo Dredger with lockable rear door
US20140048758A1 (en) * 2012-08-17 2014-02-20 Ryan Kristian Oland Fence Stretcher
US20170316844A1 (en) * 2016-05-02 2017-11-02 Kurion, Inc. Tank cleaning system
US10884393B2 (en) * 2016-05-02 2021-01-05 Veolia Nuclear Solutions, Inc. Tank cleaning system
US11440064B2 (en) 2017-08-17 2022-09-13 Veolia Nuclear Solutions, Inc. Systems and methods for tank cleaning
US11649606B2 (en) * 2020-06-19 2023-05-16 Caterpillar Inc. Dragline bucket
CN117682421A (zh) * 2024-02-04 2024-03-12 河南斯玛特起重机有限公司 一种起重机的吊具防倾斜装置
CN117682421B (zh) * 2024-02-04 2024-04-30 河南斯玛特起重机有限公司 一种起重机的吊具防倾斜装置

Also Published As

Publication number Publication date
CH491032A (fr) 1970-05-31
BE733425A (enrdf_load_stackoverflow) 1969-11-21
DE1925450B2 (de) 1972-08-31
DE1925450A1 (de) 1969-11-27
JPS5116686B1 (enrdf_load_stackoverflow) 1976-05-26
DE6920153U (de) 1973-09-20
SE340237B (enrdf_load_stackoverflow) 1971-11-08
ES367362A1 (es) 1971-04-01
GB1203896A (en) 1970-09-03

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