Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
  • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
  • B66D1/28—Other constructional details
  • B66D1/40—Control devices
  • B66D1/42—Control devices non-automatic
  • B66D1/44—Control devices non-automatic pneumatic of hydraulic

Definitions

• the present invention relates to a hydraulic control device for operating a winch, in particular in the fiering, heaving and mooring operation.
• a hydraulic control device for operating a winch is disclosed in WO00 / 57067 and shown in FIG. 1.
• This control device has a control lever which is attached to a cam disk 10 for rotation thereof.
• the cam disk 10 rotates, the position of a rotary valve connected to the cam disc changes from a directional valve provided in the hydraulic control device.
• the cam disk 10 is coupled to a control disk 20 so that it cannot rotate.
• the control disk 20 has a control cam 24, which is provided with a tappet 43 in the hydraulic control device
• the control curve 24 has a first elevation 21, a second elevation 22 and a central depression 23 arranged between them.
• the directional control valve When the control lever has rotated the cam plate 10 so that the tappet 43 is located between the second elevation 22 and the central recess 23, the directional control valve is in such a position that the pressure on the hydraulic motor causes the cable to unroll from the winch, that is, a freezing.
• the second elevation 22 represents a stop that prevents further rotation of the cam plate 10 beyond the elevation 22.
• the directional control valve When the plunger 43 is between the central recess 23 and the first elevation 21 after rotation of the cam plate 10, the directional control valve is in such a position that the pressure on the hydraulic motor causes the cable to roll up onto the winch, i.e. Heave, enables.
• the cam plate 10 has a first cam section 11, which is in contact both in the heaving position and in the free position of the cam plate 10 with a contact surface 35 of a pressure piece 30 slidably arranged in the housing of the hydraulic control device.
• the pressure piece 30 is biased via a return spring 41 against a screw plug 40 connected to the housing of the hydraulic control device.
• the return spring 41 has the effect that after actuation of the control lever for rotating the cam disk 10 into the heaving or freezing position and subsequent release of the control lever by the operator, the cam disk 10 is moved back into the position in which the tappet 43 moves in the middle recess 23 is located.
• first groove 33 and a second groove 34 in the longitudinal direction thereof on diametrically opposite sides, into which a pin 44, which is fastened to the housing of the hydraulic control device, engages, depending on the orientation of the pressure piece.
• the pressure piece 30 is secured against rotation by the pin 44.
• the axial length of the first groove 33 does not restrict the axial movement of the pressure piece 30.
• a second curve section 12 dips on the outer circumference of the cam disk 10 into a recess 31 of the pressure piece 30 and, upon further rotation of the cam disk in FIG. 1, moves counterclockwise along a surface 32 of the recess 31 up to a stop surface 32a, which is another Prevents rotation of the cam disc 10 counterclockwise.
• the pressure piece 30 is not only pretensioned by the return spring 41, but also by a pressure spring 42. Because of the arrangement of the second curve section 12 in the recess 31, the springs 41 and 42 no longer exert a restoring force the cam 10 and thus on the control lever, so that the operator can release the control lever while the winch continues to operate in the mooring area.
• the second groove 34 with a stop surface 34a is formed in the pressure piece 30 in the radial direction opposite to the first groove 33.
• This second groove 34 enables the pin 44 to engage the second groove after the pressure piece 30 has been rotated through an angle of 180 °, and thus prevents the tappet 43 from overcoming the first elevation 21 and the winch from reaching the mooring area.
• FIGS. 2a and 2b Another hydraulic control device according to the prior art is shown in FIGS. 2a and 2b.
• a rotary slide valve of a directional control valve for controlling the winch is actuated via the rotation of a cam plate 110.
• a control element 120 is secured against rotation on the cam disc, with which a thrust piece 130 is in contact in the neutral division shown in FIG. 2a, which is biased by a return spring 141 against a locking screw 140 fastened to the housing of the control device.
• the pressure piece 130 also has a groove 133 into which a pin 144 connected to the housing of the control device engages.
• the pressure piece 130 has a curved recess 132 in which the control element 120 can rotate. If the pressure piece 130 in FIG. 2a is pre-tensioned to such an extent that the control element 120 is located in the recess 132, the pressure piece 130 is also held under tension by a pressure spring 142.
• the cam plate 110 has a first stop surface 111 and a second stop surface 112, with which a first pin 151 or a second pin 152 attaches to the housing are in the system.
• Pins 151 and 152 are shown rotated 25 ° in the sectional plane in FIG. 2b.
• the second stop surface 112 is in contact with the pin 151 in the end position when it is being furred, while the pin 152 is in contact with the first stop surface 111 in the end position when hoisting with simultaneous mooring blocking.
• the first stop surface 111 can move closer to the first pin 151, which enables the winch to be moored.
• the object of the present invention is to eliminate the disadvantages of the prior art and to provide a hydraulic control device for a winch in which mooring blocking can be carried out in a simple manner without opening the housing.
• the hydraulic control device for a winch has an actuator for setting the mode of operation of the winch and an actuator. Characterized in that the control device can be brought into a position during the control of the winch in which a positive stop for Mooring blocking is ineffective, the mooring blocking can be removed with little effort, preferably even during the operation of the winch.
• movement of the actuating device in its longitudinal direction causes the form-fitting stop to be ineffective. In this way, no further device is required to remove the mooring block, so that the actuating device serves both to stop the operating work and to block the mooring operation.
• the lifting of the mooring block is preferably achieved by moving a screw in a longitudinal groove
• the Moo ing ses is blocked in cooperation with a housing-fixed stop that can be overcome by the movement of the actuator in its longitudinal direction. This feature also serves to simplify the technical requirements.
• the positive stop is rendered ineffective by a rotational movement of the adjusting device.
• the mooring blockage can be released by simple mechanical movements.
• the actuating device preferably has a rotation element with two contour points which are spaced differently from the axis of rotation of the actuating device. More precisely, the actuating device has a bolt with a milled groove, which is penetrated by a groove in a pressure piece of the control device is received. Through the milling, the contour point is provided at a smaller distance from the axis of rotation of the actuating device. The contour point with a greater distance from the axis of rotation of the actuating device, in its contact position with a section of the groove, prevents the actuating device from rotating into the mooring position. With such a design, the lifting of the mooring block can be implemented with simple mechanical means.
• a plurality of balls preferably four, can be provided on the outer circumference of the bolt. This measure improves the rotational behavior of the bolt.
• FIG. 1 shows a first hydraulic control device according to the prior art
• 2a and 2b shows a second hydraulic control device according to the prior art
• Fig. 2a is a cross section
• Fig. 2b is a longitudinal section
• FIG. 3a and 3b show a hydraulic control device for a winch according to a first embodiment of the present invention, wherein Fig. 3a shows a longitudinal section of a cover plate with a control lever and Fig. 3b is a plan view of the built-in cover plate,
• FIG. 4a to 4h shows a hydraulic control device for a winch according to a first exemplary embodiment of the present invention, the hydraulic control device in FIG. 4a being in the neutral position when the mooring is released, FIG. 4c is a detail from FIG. 4b, in which the hydraulic control device is in the end position from the mooring, the hydraulic control device in FIG. 4d is in the end position from the heave, FIG. 4e being a detail from FIG. 4d, FIG. 4f showing a first modification of the second exemplary embodiment , in which mooring is possible, but mooring blocking cannot be carried out, and FIGS. 4g and 4h represent a longitudinal section and a perspective illustration of a bolt for setting the mooring blocking.
• FIGS. 3a and 3b show a cover plate 250 which can be placed on a hydraulic control device for a winch according to the prior art, for example on a hydraulic control device shown in FIGS. 2a and 2b.
• the cover plate 250 has a stop washer 251, which screws 252a and 252b is attached to the housing of the hydraulic control device.
• a rotation shaft 255 runs through a central recess in the cover plate 250, via which rotation energy can be transmitted to the cam disk of the hydraulic control device.
• a control lever 260 is secured against rotation on the rotation shaft 255 in order to enable rotation of the rotation shaft 255 by actuating the control lever 260.
• the control lever has a pin portion 262 and a ball knob 261.
• the bolt section 260 is provided in the longitudinal direction with a recess 263 through which a screw 253, preferably a wing screw 253, via which the control lever 260 is fastened to the bolt section 262.
• the recess 263 has dimensions such that the control lever 260 can be displaced in its longitudinal direction after loosening the screw 253 and can then be rigidly connected to the rotary shaft again by the screw.
• the control lever 260 can assume a variety of positions with respect to its longitudinal direction, two positions being of particular interest for use in the present invention.
• a first position the control lever is in the position shown in FIG. 3a, in which the ball head 261 has the minimum distance from the rotation shaft 255.
• the ball head 261 In the second position, the ball head 261 has the maximum distance from the rotary shaft 255.
• the control lever 260 is moved from the first position to the second position by moving it away from the rotary shaft 255 after loosening the screw 253 and then the screw 253 is tightened again.
• a mooring blocking stop 254 preferably a screw, for example a socket head screw, is provided on the stop disk in such a position that the control lever 260 rotates in its first position when rotating counterclockwise, as shown in FIG. 3b the mooring blocking stop 254 is in contact and this prevents it from rotating out of the hoist area of the winch.
• the control lever 260 When the control lever 260 is in its second position, it can be moved over the mooring blocking stop 254, since the end section 264 opposite the ball knob of the control lever 260 is at a smaller distance from the axis of rotation of the rotary shaft 255 than the mooring blocking stop 254. The second position of the control lever 260 allows the winch to enter the mooring mode.
• the hydraulic control device for a winch can be brought into the operating state from the operating state in which the mooring operation is blocked and only heaving and lifting is possible without opening the housing in which a mooring operation is possible.
• the advantage of the hydraulic control device according to the first embodiment of the present invention is that simply by replacing the cover plate with the control lever, a retrofitting of hydraulic control devices according to the prior art, in which the mooring blocking only by a Opening the housing was removable, on the hydraulic control device according to the first embodiment, in which the mooring blocking can be removed by a longitudinal displacement of the control lever.
• the present first exemplary embodiment is not limited to the mechanical elements from FIGS. 3a and 3b, but can be applied to any shape of control lever and cover plate, provided that a positive stop can be rendered ineffective by a longitudinal displacement of the control lever.
• a hydraulic control device according to the second exemplary embodiment is described below with reference to FIGS. 4a to 4h.
• the hydraulic control device like the control device shown in FIGS. 2a and 2, has a housing 301, in which a cam disk 310 provided with a control element 320 is provided so that it can rotate.
• the control element 320 is in the position shown in FIG. 4a in contact with a pressure piece 330 biased by a return spring 341.
• the spring 341 for biasing the pressure piece 330 is supported on a screw plug 340.
• the hydraulic control device according to the second exemplary embodiment of the present invention differing from the prior art illustrated in FIGS. 2a and 2b in that the second Pin 152 from FIG. 2a in the second embodiment.
• Example of the present invention is not provided, so that a stop surface 311 shown in Fig. 4b can not block mooring.
• a pin 370 rotatably mounted in a bush 373 is provided on the housing 301 of the control device.
• the control element 320 has a first inclined surface section 321 and a second inclined surface section 322 at its opposite end sections.
• the inclined surface sections 321 and 322 each have an arrow-like cross section, as can be seen in FIG. 4a.
• the first inclined surface section 321 has the function that the control element 320, when rotating counterclockwise in Fig. 4a beyond a contact position between the first inclined surface section 321 and the pressure piece 330, pushes the pressure piece 330 away from the cam plate 310 and into the curved recess 332 of the Pressure piece 330 enters.
• the second inclined surface section 322 has the function that the control element 320, when rotating clockwise in FIG. 4d, presses the pressure piece 330 away from the cam plate 310 and into the arched recess 332 beyond a contact position between the second inclined surface section 322 and the pressure piece 330 of the pressure piece 330 occurs.
• the bolt 370 in the second embodiment of the present invention has a spindle 371 and a toggle 372 attached to an end portion thereof, with which the spindle can be rotated by manual operation by an operator.
• a spindle 371 and a toggle 372 attached to an end portion thereof, with which the spindle can be rotated by manual operation by an operator.
• recesses 371a are provided in the circumferential direction of the spindle at opposite portions thereof.
• the end section of the spindle 371 provided with the cutouts 371a, 371b is arranged in the assembled state of the control device according to the second exemplary embodiment shown in FIG. 4a in a groove 333 of the pressure piece 330 provided in the longitudinal direction of the pressure piece 330.
• the groove 333 has an end face 333a at its one end section which faces the control element 320.
• the spindle 371 and the groove 333 have dimensions such that in the position of the spindle 371 shown in FIG. 4b, in which the millings face the end face 333a of the groove, with a maximum distance between the pressure piece 330 and the cam plate 310 corresponding to that in FIG. 4c shown section of Fig. 4b between the contour point Y and the end face 333a of the groove 333, there is a slight distance.
• control element 320 can move freely in the curved recess 332 of the pressure piece 330 and the pressure piece by both the return spring 341 and by a pressure spring 342, which has the same function as the pressure spring according to the prior art, for Cam plate 310 is biased out, a contact between the end face 333a and the contour point Y is prevented.
• Fig. 4b there is a maximum distance between Cam 310 and thrust piece 330 in abutment surface 311 of the cam 310 with a pin 351 provided on the housing 301 of the control device. In this way, a further rotation of the control element 320 is prevented counterclockwise beyond the position shown in Fig. 4b.
• the spindle 371 and the groove 333 also have dimensions such that in the position shown in FIG. 4d, the spindle 371, in which the circumferential surface of the spindle 371 having the contour point X faces the end face 333a of the groove 333, is at a maximum Distance between thrust piece 330 and cam plate 310, the end face 333a is in contact with the contour point X, as can be seen from the enlarged section 4e from FIG. 4.
• This contact between the contour point X and the end face 333a of the groove 333 and by appropriate dimensioning of the curved recess 332 and the control element 320 prevents the control element 320 from rotating counterclockwise beyond the position shown in FIG. 4d.
• the fastening of the bolt 370 to the housing 301 is described below with reference to FIGS. 4d, 4g and 4h.
• the spindle 371 of the bolt 370 is fastened to the housing 301 via a bush 373 by means of screws 378, preferably two screws arranged opposite to the spindle 371, as shown in FIG. 4h.
• the bush 373 is located in a bore 302 which has a step section 302.
• An O-ring 375 seals the bush 373 with respect to the bore 302.
• An O-ring 374 is also provided between an inner recess of the bush and the outer circumference of the spindle 371, which enables a tight connection between these components.
• the spindle 371 has, at the end section on which the milled portions 371a are provided, a ball receptacle with bores, in each of which a ball 376 and a compression spring 377 are provided.
• a ball 376 and a compression spring 377 are provided in each of which a ball 376 and a compression spring 377 are provided.
• 4 balls are provided at 90 ° intervals.
• the balls 376 are pressed away from the step portion 303 of the bore 302 by the springs 377 and can enter grooves 373a provided in the bush 373.
• the grooves 373a are provided in the embodiment shown in FIG. 4h at 90 ° intervals extending from the outer circumference of the spindle 371.
• FIG. 4f shows a first modification of the hydraulic control device according to the second exemplary embodiment. This modification is applicable in the case where a mooring block does not have to be switched when using the hydraulic control device, but the mooring operation is always possible.
• the first modification of the second exemplary embodiment differs from the embodiment shown in FIGS. 4a to 4e in that the pin 370 from FIGS. 4a to 4e is not guided to the outside and cannot be actuated from the outside.
• the bolt 391 in FIG. 4f has a section 391 with a reduced dimension, which enters the groove 333.
• This reduced dimension corresponds to the dimension y of the embodiment shown in FIG. 4h.
• Section 391 with reduced dimensions preferably has a circular cross section, but any other configuration is also conceivable, provided the distance y exists between the central axis of the bolt 391 and the contour point X. If the section 391 with reduced dimensions also has contour points which are at a greater distance than the distance y from the central axis 391, the bolt 391 is to be arranged in a manner secure against rotation.
• the bolt 391 is received in FIG. 4f in the bore 302, which is closed by a cover plate 390.
• a bolt can also be accommodated in the bore 302 of the housing 301, which projects with a section into the groove 333, the dimension of which extends from the central axis of the bolt to cam 310 corresponds to the above distance x. In this way, the system shown in FIG. 4e between a contour point X of this bolt and the end face 333a of the groove 333 is possible.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Mechanical Control Devices (AREA)
• Mechanically-Actuated Valves (AREA)
• Forklifts And Lifting Vehicles (AREA)
• Fluid-Pressure Circuits (AREA)
• Control And Safety Of Cranes (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

Family

ID=28051071

Family Applications (1)

Country Status (6)

Citations (4)

Family Cites Families (1)

• 2002
  • 2002-04-03 DE DE10214732A patent/DE10214732A1/de not_active Withdrawn
• 2003
  • 2003-02-07 DE DE50307701T patent/DE50307701D1/de not_active Expired - Lifetime
  • 2003-02-07 JP JP2003580204A patent/JP4342321B2/ja not_active Expired - Fee Related
  • 2003-02-07 KR KR1020047015679A patent/KR101019523B1/ko not_active IP Right Cessation
  • 2003-02-07 WO PCT/DE2003/000359 patent/WO2003082726A1/de active IP Right Grant
  • 2003-02-07 EP EP03704297A patent/EP1490289B1/de not_active Expired - Lifetime
• 2004
  • 2004-09-08 NO NO20043766A patent/NO330654B1/no not_active IP Right Cessation

Patent Citations (4)

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