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公开(公告)号：US11905147B2
公开(公告)日：2024-02-20
申请号：US17741588
申请日：2022-05-11
申请人： Bernward Welschof
CPC分类号： B66D1/50 , A01G23/003 , B66D1/08 , B66D2700/0108 , B66D2700/0133
摘要： A method for an operation of a forestry winch, which has a rope drum driven by a drive motor and on which a rope is wound up, and has a rope ejector roller for the rope driven by an additional drive motor, whereby the rope is guided from the rope drum to the rope ejector roller and is deflected on the rope ejector roller. The drive motor of the rope drum and the additional drive motor of the rope ejector roller are operated so that when the rope is unspooled from the rope drum, and when the rope is wound up onto the rope drum, a minimum rope pre-tension, in particular a constant minimum rope pre-tension, is generated in the segment of the rope between the rope drum and the rope ejector roller.
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公开(公告)号：US20220306433A1
公开(公告)日：2022-09-29
申请号：US17702646
申请日：2022-03-23
申请人： Bernward Welschof
IPC分类号： B66D1/36
摘要： An ejector for a forestry winch that includes a rotating ejector roller, over which a synthetic rope is guided and deflected, wherein the ejector roller is driven by a drive motor, and at least one rotating pressure roller, by means of which the synthetic roe is pressed against the ejector roller, wherein the driven ejector roller and the at least one rotating pressure roller are coupled in rotation.
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公开(公告)号：US20240002199A1
公开(公告)日：2024-01-04
申请号：US18029235
申请日：2021-09-13
申请人： Bernward Welschof
CPC分类号： B66D1/36 , B66D1/7489 , B66D1/7415 , A01G23/003
摘要： This invention relates to a forestry winch that has a rope drum driven by a drive motor and an ejector roller driven by an additional drive motor, wherein a rope runs from the rope drum to the ejector roller and is guided over the ejector roller. The rope is pressed against the ejector roller by means of a pressing device. The pressing device has at least three pressing elements which are distributed around the periphery of the ejector roller.
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公开(公告)号：US20220259018A1
公开(公告)日：2022-08-18
申请号：US17670568
申请日：2022-02-14
申请人： Bernward Welschof
IPC分类号： B66D1/50
摘要： A forestry winch may include a rope drum driven by a drive motor, wherein a rope is wound up on the rope drum, wherein the rope drum is functionally connected with a brake device, wherein the brake device is in the form of a spring-loaded brake which is impinged by a spring device toward a braking position and by a hydraulic brake release pressure present in a brake release pressure line toward a release position, wherein the drive motor is in the form of a hydraulic motor which is connected by a first pressure medium line and a second pressure medium line to a multi-port control valve device controlling the drive motor, and a bypass valve device connecting the first and second pressure medium lines and is located in a connecting line connecting the first and second pressure medium lines and has a closed position and a flow position.
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公开(公告)号：US12049391B2
公开(公告)日：2024-07-30
申请号：US17670568
申请日：2022-02-14
申请人： Bernward Welschof
IPC分类号： B66D1/08 , B66D1/44 , B66D5/26 , F16D121/12
CPC分类号： B66D1/08 , B66D1/44 , B66D5/26 , B66D2700/035 , F16D2121/12
摘要： A forestry winch may include a rope drum driven by a drive motor, wherein a rope is wound up on the rope drum, wherein the rope drum is functionally connected with a brake device, wherein the brake device is in the form of a spring-loaded brake which is impinged by a spring device toward a braking position and by a hydraulic brake release pressure present in a brake release pressure line toward a release position, wherein the drive motor is in the form of a hydraulic motor which is connected by a first pressure medium line and a second pressure medium line to a multi-port control valve device controlling the drive motor, and a bypass valve device connecting the first and second pressure medium lines and is located in a connecting line connecting the first and second pressure medium lines and has a closed position and a flow position.
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公开(公告)号：US20220363522A1
公开(公告)日：2022-11-17
申请号：US17741588
申请日：2022-05-11
申请人： Bernward Welschof
摘要： A method for an operation of a forestry winch, which has a rope drum driven by a drive motor and on which a rope is wound up, and has a rope ejector roller for the rope driven by an additional drive motor, whereby the rope is guided from the rope drum to the rope ejector roller and is deflected on the rope ejector roller. The drive motor of the rope drum and the additional drive motor of the rope ejector roller are operated so that when the rope is unspooled from the rope drum, and when the rope is wound up onto the rope drum, a minimum rope pre-tension, in particular a constant minimum rope pre-tension, is generated in the segment of the rope between the rope drum and the rope ejector roller.
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公开(公告)号：US20230373764A1
公开(公告)日：2023-11-23
申请号：US18247150
申请日：2021-09-13
申请人： Bernward Welschof
CPC分类号： B66D1/36 , B66D1/7415 , B66D1/08 , A01G23/003
摘要： A forestry winch that has a rope drum driven by a drive motor and an ejector roller driven by an additional drive motor is disclosed. A rope is guided from the rope drum to the ejector roller and is guided over the ejector roller. The additional drive motor is located on the ejector roller and is connected to an energy supply device by means of energy supply lines. Provided on the ejector roller a protective device, which covers the energy supply lines located in the area of the additional drive motor and protects them from mechanical damage.
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公开(公告)号：US20230003594A1
公开(公告)日：2023-01-05
申请号：US17852488
申请日：2022-06-29
申请人： Bernward Welschof
摘要： A winch testing device for testing the winch pulling capacity and brake holding capacity of a forestry winch of forestry equipment, in particular of a mobile forestry machine or an accessory rear shield, wherein the forestry winch has a rope drum that can be driven by a drive motor and braked by means of a brake device and on which a rope is spooled. The winch test device has a hydraulic test cylinder which has a first attachment interface, with which the hydraulic test cylinder can be fastened to an attachment point of the forestry equipment, and a second attachment interface with which the hydraulic test cylinder can be connected with the rope of the forestry winch.
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公开(公告)号：US20220306432A1
公开(公告)日：2022-09-29
申请号：US17702614
申请日：2022-03-23
申请人： Bernward Welschof
IPC分类号： B66D1/36
摘要： An ejector for a forestry winch, the ejector may include a rotating ejector roller by means of which a synthetic rope is guided and deflected, wherein the ejector has at least one rotating pressure roller driven by a drive motor and by means of which the synthetic rope is pressed against the ejector roller.
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