EP4341195A1 - Antriebsanordnung mit einer welle, einer seiltrommel, einem haltemittel und einem getriebemotor - Google Patents
Antriebsanordnung mit einer welle, einer seiltrommel, einem haltemittel und einem getriebemotorInfo
- Publication number
- EP4341195A1 EP4341195A1 EP22725163.4A EP22725163A EP4341195A1 EP 4341195 A1 EP4341195 A1 EP 4341195A1 EP 22725163 A EP22725163 A EP 22725163A EP 4341195 A1 EP4341195 A1 EP 4341195A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cable
- rope
- shaft
- cable drum
- drum
- 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
Links
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
- B66D1/26—Rope, cable, or chain winding mechanisms; Capstans having several drums or barrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
- B66C3/02—Bucket grabs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
- B66C3/12—Grabs actuated by two or more ropes
- B66C3/125—Devices for control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
- B66C3/14—Grabs opened or closed by driving motors thereon
- B66C3/18—Grabs opened or closed by driving motors thereon by electric motors
-
- 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
Definitions
- the invention relates to a drive arrangement with a shaft, a cable drum, a holding device and a geared motor.
- a drive arrangement is designed with a shaft, a cable drum, a holding device and a geared motor.
- a cable drum is known from US Pat. No. 5,167,401 A as the closest prior art.
- DE 11 87776 A discloses a device for determining the opening state of a gripper.
- a shell grab is known from DE 102015 112 639 A1.
- a grab basket is known from WO 2019/232937 A1.
- the invention is therefore based on the object of further developing a drive arrangement with a shaft, a cable drum, a holding means and a geared motor with increased safety and/or service life.
- the object is achieved in the drive arrangement with a shaft, a cable drum, a holding means and a geared motor according to the features specified in claim 1.
- the geared motor has a gear driven by an electric motor of the geared motor, the output shaft of which, in particular the output shaft, is designed as a hollow shaft, wherein in a Housing part of the gearbox bearings are accommodated for the rotatable mounting of the output shaft, the shaft being rotatably mounted by means of bearings accommodated in the holding means, in particular relative to the holding means, the cable drum being non-rotatably connected to the shaft, with two on the cable drum, in particular one from the other in the axial direction spaced ropes are at least partially wound up, the end area of the first rope being attached to a first basket part of a grab basket, the second rope being attached with its end area to a second basket part of the grab basket, the basket parts being rotatable about a common axis of rotation are arranged in bearings, with each basket part being connected via a respective pivot bearing to a rod which is connected to the
- the electronic signaling system has a comparison means which is designed to compare a first angle value read from the memory and assigned to a first position of the common axis of rotation with the angle value detected by the sensor and to switch off the electric motor depending on the result of the comparison, in particular so that when the grab basket is closed, the winding of the respective cable onto the cable drum is terminated when the first angular value is reached, and/or the electronic signaling system has a comparison means, which is suitably designed, to a second position of the common axis of rotation read out from the memory to compare the associated first angle value with the angle value detected by the sensor and to switch off the electric motor depending on the result of the comparison, in particular so that when the grab basket is opened, the unwinding of the respective cable from the cable drum ends when the second angle value is reached and will.
- the advantage here is that the rope is not overloaded, which increases safety and service life. Because as soon as an angle value stored in the memory is reached, the motor is switched off. The angular value is the absolute angular position, so that even if the cable drum has made several complete revolutions, a unique angular position is determined by the sensor and then compared with the value stored in the memory.
- a first limit switch which is electrically connected to the signal electronics, is fastened to the holding means, in particular fastened in such a way that a first of the rods or a part that is firmly connected to the first rod can be detected, in particular so that, depending on the result of the detection, the Electric motor is effected.
- the advantage here is that the rope is not overloaded, which increases safety and service life
- a second limit switch which is electrically connected to the electronic signaling system, is fastened to the holding means, in particular fastened in such a way that a second rod or a part firmly connected to the second rod can be detected, in particular in such a way that the electric motor is switched off depending on the result of the detection is effected.
- the advantage here is that the rope is not overloaded, which increases safety and service life.
- the inverter has a current sensor for detecting the motor current of the electric motor, i.e. in particular for detecting the amount of current supplied to the electric motor by the inverter, and the current sensor is connected to a monitoring means of the electronic signaling system, which is suitable for monitoring the detected Monitor current value for exceeding a threshold value, in particular to cause a shutdown of the motor in case of overload, in particular and to activate a brake connected to the motor.
- a monitoring means of the electronic signaling system which is suitable for monitoring the detected Monitor current value for exceeding a threshold value, in particular to cause a shutdown of the motor in case of overload, in particular and to activate a brake connected to the motor.
- a first roller holder is attached to the holding means, on which two rollers are accommodated and rotatably mounted, the rollers being spaced apart from one another and aligned coaxially with one another, the axis of rotation of the rollers being aligned parallel to the axis of rotation of the cable drum, with, in particular for Prevention of a multi-layer winding of the cable drum, the minimum distance between the cable drum and the respective pulley is less than twice the cable diameter, in particular the diameter of the cable, and/or is larger than the cable diameter or equal to the cable diameter.
- the advantage here is that the ropes are wound up in a controlled manner, which reduces wear and tear on the ropes and the risk of tears. This increases the service life.
- the drive arrangement according to the invention can be made compact and robust.
- the area covered by the cable drum in the axial direction includes the area covered by the two rollers in the axial direction.
- both rollers cover the winding area of the two ropes on the rope drum.
- each turn of rope along the entire winding area can be touched by one of the two rollers. In this way, a cable winding can be prevented from moving out radially.
- the first of the rollers touches a first rope above the point at which the first rope begins to touch the rope drum, with the first roller having a circumferential angle distance of between 10° and 50° from this point and in relation to the axis of rotation of the rope drum /or to the horizontal plane, in particular with the first cable running essentially vertically from the cable drum, in particular from the point, to a first basket part, in particular with the end area of the first cable being attached to the first basket part, and/or the second of the roller touches a second rope above that point at which the second rope begins to touch the rope drum, with reference to the axis of rotation of the rope drum, the second roller 33 having a circumferential angular distance value of between 10° and 50° from this point and/or from the horizontal plane, in particular wherein the second cable from the cable drum, in particular from the point until runs essentially vertically to a second basket part, in particular with the second cable is fixed with its end on the second basket part.
- the advantage here is that multi-layer, uncontrolled and/or disorderly winding up of the rope can be prevented. This also reduces the wear on the ropes.
- the basket parts of a grab basket can be actuated with the two ropes, so that the grab basket formed from the two basket parts can be opened or closed.
- the two ropes are wound up synchronously, so that the two basket parts can also be actuated synchronously and the grab basket therefore closes or opens as symmetrically as possible.
- a second roller holder is attached to the holding means, on which a third roller is received and rotatably mounted, the third roller being spaced apart from the other two rollers in the circumferential direction.
- the axis of rotation of the third pulley is aligned parallel to the axis of rotation of the cable drum, wherein the minimum distance between the cable drum and the third pulley is less than twice the cable diameter, in particular the diameter of the cable, in particular to prevent multiple layers of winding on the cable drum, and /or is greater than the cable diameter or equal to the cable diameter, in particular the area covered by the cable drum in the axial direction encompassing the area covered by the third pulley in the axial direction.
- a torque arm in particular a torque arm part, is connected to the holding means, in particular by means of screws, with at least one screw passing through a recess in the torque arm being screwed into a threaded hole in the housing part of the transmission or is screwed into a threaded bore of a part resting on the housing part of the transmission, in particular in the direction of the axis of rotation of the shaft which is positively connected to the housing part, wherein the screw with its screw head presses a first damping ring onto the torque arm and the torque arm thus presses a second damping ring to the housing part of the transmission.
- shock loads which are passed on to the holding means via the rods, can be dampened towards the geared motor.
- the drive arrangement is therefore of robust design.
- the cable drum is directly connected to the output shaft of the gearbox via the shaft. An adapter or a coupling is not provided. Therefore a compact solution is achieved.
- the gear is designed as a parallel shaft gear and the rotor shaft of the electric motor is aligned parallel to the shaft.
- the inside diameter of the recess is larger than the maximum outside diameter of that area of the screw that covers the same area in the axial direction as the recess also covers in the axial direction.
- the advantage here is that the screw is spaced from the torque support.
- the damping rings are made from a material that is softer and/or has higher elasticity and/or easier deformability than the material from which the torque support is made and/or from which the housing part is made.
- the advantage here is that high damping can be achieved.
- the damping rings are made of plastic and/or rubber.
- the advantage here is that damping of shock loads can be achieved.
- the torque arm is designed as an L-shaped bent steel part, with a first leg of the L extending parallel to the axis of rotation of the shaft and the other leg extending perpendicular to the axis of rotation of the shaft. The advantage here is that a simple production of a robust component is made possible.
- each damping ring is designed in several pieces.
- the advantage here is that improved damping can be achieved.
- each damping ring is designed as a stack of rings, each of which is made of a different material.
- the advantage here is that improved damping of shock waves can be achieved and the geared motor is therefore arranged in a protected manner.
- the shaft is partially inserted into the hollow shaft and connected in a torque-proof manner, in particular by means of a feather key connection.
- ropes can be wound up on the rope drum, with a respective rope being connected to a respective basket part of a grab basket.
- the basket parts are arranged so as to be rotatable about a common axis of rotation, with each basket part being connected via a respective pivot bearing to a rod which is connected to the holding means, in particular is connected with play.
- a roller mount for rotatably supporting and holding a damping roller is attached to the holding means, the electric motor, in particular with its housing, against the roll holder.
- FIG. 1 shows a schematic sketch of a grab basket drive, in particular a shovel drive.
- FIG. 2 shows a drive area of the drive according to the invention, having a geared motor, in an oblique view.
- FIG. 3 shows the drive area without a geared motor.
- the grab basket has two basket parts, in particular blades, which can be moved relative to one another.
- the two basket parts are arranged to be rotatable about a common axis of rotation.
- the axis of rotation is indicated schematically in FIG. 1 in a first position 1 and in a second position 2 .
- the position of the axis of rotation is shifted, since each basket part is connected via a swivel joint to a rod 5, which is connected to a holding means 23 of a cable winch drive 3 with only slight play.
- a shaft 31 is rotatably mounted on the holding means 23, onto which a cable drum of the cable winch drive 3, which can be driven by a geared motor (20, 21) of the cable winch drive 3, is attached and connected in a rotationally fixed manner.
- the cable drum is driven by an output shaft, designed as a hollow shaft 22, of a gear 21 of the geared motor.
- the hollow shaft 22 is slipped onto the axially protruding shaft 31 and connected in a torque-proof manner.
- the gear 21 is driven by an electric motor 20 .
- Two ropes 4 can be wound up on the rope drum, each of the ropes 4 being connected to a respective basket part 6 so that the respective basket part can be pivoted by winding or unwinding the ropes 4 on the rope drum.
- a torque support 24 is connected to the holding means 23, through which the reaction torque of the geared motor can be derived.
- screws 25 are screwed into threaded bores in the housing part of the transmission or in a sheet metal part lying against the housing part of the transmission.
- the screw head of the respective screw 25 is in contact with a first of the damping rings 32, which is in contact with the torque support 24, which is pressed towards the housing part of the transmission via a respective second damping ring 32.
- the screws 25 protrude through a recess in the torque support, the recess having a larger inside diameter than the outside diameter of the screw 25 .
- shock loads acting on the cables 4 are transmitted to the hollow shaft 22 via the cable drum and the shaft 31, shock loads which are applied via the rods 5 are only transmitted via the holding means 23 and the torque support 24 and the intermediate damping rings 32 to transfer gearbox.
- the damping rings 32 are made of a softer material than the torque support 24, which is preferably made of steel, and the housing part of the transmission, which is preferably made of steel.
- a plastic and/or rubber is suitable as the material for the damping rings 32 .
- the electric motor 20, in particular the housing of the electric motor 20, is preferably in contact with a roller mount 35, so that the geared motor is protected from impacts.
- the torque support 24 is designed as an L-shaped bent steel part, with a first leg of the L extending parallel to the axis of rotation of the shaft and the other leg extending perpendicularly to the axis of rotation of the shaft.
- the roller holder 35 is fastened to the holding means 23 and rotatably supports two rollers 33 which are coaxially aligned with one another.
- the two rollers 33 are spaced apart axially.
- the axes of rotation of the rollers 33 are aligned parallel to the axis of rotation of the cable drum 30 .
- the minimum distance between the cable drum 30 and the respective roller 33 is equal to the diameter of the cable 4.
- the roller 33 guides the respective cable 4.
- the roller 33 thus acts as a captive device.
- the rollers 33 touch the respective rope 4 above that point at which the rope 4 begins to touch the rope drum 30 .
- the roller 33 has a circumferential angular distance of between 10° and 50° from this point and/or from the horizontal plane.
- the cable 4 runs from the cable drum 30, in particular from the point, to the respective basket part 6 essentially vertically.
- the area covered by the cable drum 30 in the axial direction includes the area covered by the two rollers 33 in the axial direction.
- a third roller 34 is also rotatably mounted on a further bracket connected to the holding means 23 , the axis of rotation of this third roller 34 also being aligned parallel to the axis of rotation of the cable drum 30 .
- the area covered by the cable drum in the axial direction also includes the area covered by the third roller 34 in the axial direction.
- the minimum distance between the cable drum 30 and the third pulley 34 is also equal to the diameter of the cable 4.
- the third roller 34 also only releases a single-layer winding of the cable drum 30 with the cable 4, thus in particular preventing a two-layer or multi-layer winding.
- the area covered by the third roller 34 in the axial direction includes the area covered by the first and second roller 33 in the axial direction. Thus, only a single third roller 34 to secure the winding of both ropes 4 is necessary.
- the third roller 34 has an angular distance from the first roller 33 counter to the circumferential direction of between 70° and 90°.
- the third roller 34 is thus arranged below, ie below in the gravitational direction, the first roller 33 .
- the roller holder 35 has an axis which is firmly connected to the holding means 23 and on which the hollow-cylindrical rollers 33 are rotatably mounted by means of a roller bearing, in particular a needle bearing, or by means of plain bearings.
- the axis is connected centrally to the hardening means 23, so that the two rollers 33 can be arranged symmetrically to this central connection point.
- the further roller holder for the third roller 34 is designed in two parts, so that both ends of the third roller 34 are each mounted via a roller bearing, in particular needle bearings, or by means of plain bearings, and each of the two parts of the roller holder is firmly connected to the holding means 23.
- the electric motor 20 has a sensor for detecting the angular position of the rotor of the electric motor 20 .
- the sensor is designed as a multiturn encoder.
- the sensor also records the revolutions in addition to the angle of rotation values of the rotor shaft of the electric motor when winding the cable 4 onto the cable drum 30.
- the sensor signal from the sensor is fed to an inverter which feeds the electric motor.
- a first angle value assigned to the first position 1 and a second angle value assigned to the second position 2 are stored in a memory comprised by the inverter.
- the motor current i.e. the amount of current supplied to the electric motor
- a current sensor of the inverter for exceeding a threshold value in order to switch off the motor in the event of overload, in particular to activate a brake connected to the motor.
- limit switches are additionally fastened to the holding means 23, which detect when the rotary position of the rods 5 associated with the first position 1 or second position 2 has been reached. In this way, it is also possible to switch off the engine and thus increase safety.
- the limit switches do not have to detect the rod directly, but may also detect a part that is firmly connected to the rod.
- the limit switches are protected in a housing connected to the holding means 23 .
- it is not the cable diameter that is selected as the respective minimum distance, but a larger value which is smaller than twice the cable diameter. Thus there is some play for the rope, but a two-layer or multi-layer winding is still prevented.
- each damping ring is made in several pieces.
- each damping ring can be implemented as a stack of rings, each of which is made of a different material. A further improved damping can thus be achieved.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110533469.1A CN115367614A (zh) | 2021-05-17 | 2021-05-17 | 用于抓斗的驱动装置 |
| DE102021003503 | 2021-07-07 | ||
| PCT/EP2022/025163 WO2022242898A1 (de) | 2021-05-17 | 2022-04-21 | Antriebsanordnung mit einer welle, einer seiltrommel, einem haltemittel und einem getriebemotor |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP4341195A1 true EP4341195A1 (de) | 2024-03-27 |
| EP4341195C0 EP4341195C0 (de) | 2025-06-11 |
| EP4341195B1 EP4341195B1 (de) | 2025-06-11 |
Family
ID=81842065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22725163.4A Active EP4341195B1 (de) | 2021-05-17 | 2022-04-21 | Antriebsanordnung mit einer welle, einer seiltrommel, einem haltemittel, einem getriebemotor und einem greifkorb |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4341195B1 (de) |
| DE (1) | DE102022001368A1 (de) |
| WO (1) | WO2022242898A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118289631B (zh) * | 2024-06-05 | 2024-08-27 | 洛阳诚发电力设备有限公司 | 一种5g通信塔架用吊装设备 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE305499C (de) | ||||
| DE1187776B (de) | 1961-09-16 | 1965-02-25 | Licentia Gmbh | Einrichtung zur Ermittlung des OEffnungszustandes eines Greifers |
| US5167401A (en) | 1990-08-23 | 1992-12-01 | Harnischfeger Corporation | Hoist drive and method for driving a double hoist carrying apparatus |
| DE4034006A1 (de) * | 1990-10-25 | 1992-04-30 | Siemens Ag | Verfahren zum betreiben eines krans mit greifer |
| DE19903227C2 (de) | 1999-01-27 | 2001-03-29 | Stahl R Foerdertech Gmbh | Seilzug mit Überlastsicherung |
| US6653804B1 (en) * | 2000-09-29 | 2003-11-25 | Magnetek, Inc. | Method and apparatus for controlling a bucket hoist using a flux vector AC drive |
| US10150659B2 (en) | 2014-08-04 | 2018-12-11 | Nabors Drilling Technologies Usa, Inc. | Direct drive drawworks with bearingless motor |
| DE102015112639B4 (de) | 2015-07-31 | 2017-05-11 | Peiner SMAG Lifting Technologies GmbH | Schalengreifer |
| CN108675141A (zh) | 2018-06-08 | 2018-10-19 | 江苏金恒信息科技股份有限公司 | 一种四绳抓斗抓取渣料的系统及方法 |
-
2022
- 2022-04-21 DE DE102022001368.1A patent/DE102022001368A1/de active Pending
- 2022-04-21 WO PCT/EP2022/025163 patent/WO2022242898A1/de not_active Ceased
- 2022-04-21 EP EP22725163.4A patent/EP4341195B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022242898A1 (de) | 2022-11-24 |
| EP4341195C0 (de) | 2025-06-11 |
| DE102022001368A1 (de) | 2022-11-17 |
| EP4341195B1 (de) | 2025-06-11 |
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