EP2949615A1 - Treuil à câble avec régulation contrôlée automatiquement de la vitesse de déroulement d'un câble de traction - Google Patents

Treuil à câble avec régulation contrôlée automatiquement de la vitesse de déroulement d'un câble de traction Download PDF

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Publication number
EP2949615A1
EP2949615A1 EP15169142.5A EP15169142A EP2949615A1 EP 2949615 A1 EP2949615 A1 EP 2949615A1 EP 15169142 A EP15169142 A EP 15169142A EP 2949615 A1 EP2949615 A1 EP 2949615A1
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EP
European Patent Office
Prior art keywords
speed
cable
carriage
cable winch
haulage
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
EP15169142.5A
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German (de)
English (en)
Other versions
EP2949615B1 (fr
Inventor
Drago Pintar
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.)
Uniforest doo
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Uniforest doo
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Publication date
Application filed by Uniforest doo filed Critical Uniforest doo
Publication of EP2949615A1 publication Critical patent/EP2949615A1/fr
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Publication of EP2949615B1 publication Critical patent/EP2949615B1/fr
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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
    • B66D1/48—Control devices automatic

Definitions

  • the object of the invention is a cable winch with automatically controlled regulation of speed of unwinding of a haulage cable.
  • a cable winch of the invention is used as a drive unit of a device for hauling of timber on a poorly accessible terrain. It allows access with a working machine, a tractor or a lorry only from the top of a terrain, so timber must be hauled uphill.
  • a first worker is located at a site where round timber is fastened, a second worker releases the round timber and a third worker is in charge of lowering the carriage downhill and of lowering the round timber in the upper point.
  • the mass of the round timber to be lowered to the ground is of key importance in pulling a brake.
  • the worker needs to monitor the speed of lowering of the round timber and to adequately react by using a mechanical lever of the brake.
  • the mass of round timber to be lowered can be in a range of up to 1,500 kg. While lowering the carriage the lower worker and the one operating the brake usually need to communicate since the worker operating the cable winch in the lower section of the terrain does not see how rapidly the carriage moves.
  • the embodiment of a cableway with a cable winch with automatically controlled regulation of the speed of unwinding of a haulage cable of the invention allows for a more simple automated process of cableway operation. This embodiment also allows for a remotely controlled operation of the cable winch, wherein the operator does no longer have to manually control the braking force of the cable winch based on an estimated speed of the carriage.
  • the embodiment of the cableway with the cable winch of the invention calls only for two workers in order to keep the same functionality of the cableway.
  • the embodiment of the cableway is schematically shown in Figure 2 .
  • an initial clip and a final clip (CLIP_1 and CLIP_2) need to be arranged.
  • the clips make it possible to release a cable from the carriage when they come in contact with the carriage.
  • the final section of the cable is fixed into the carriage between both clips. It is herewith ensured that the round timber is lifted from the ground during the entire uphill hauling.
  • a cable winch with automatically controlled regulation of speed of unwinding of a haulage cable of the invention is represented in a block diagram in Figure 3 .
  • the task of such cable winch is to automatically regulate the speed of unwinding of a haulage cable 6 and consequently the speed of movement of a carriage 10 along a bearer cable 5.
  • the haulage cable 6 is wound on a drum 2 of a hydraulic winch 8.
  • a brake 3 is fully pulled until a hauling function (winding of the haulage cable onto a drum - haulage of round timber towards the winch) or an unwinding function (unwinding of the haulage cable from the drum - lowering of the haulage cable downhill) is used. If the speed of unwinding of the haulage cable 6 is to be changed continuously, also the force, with which the brake 3 brakes the speed of rotation of the drum 2, needs to be changed continuously.
  • a hydraulically operated brake 3 is used for this purpose and its brake force can be defined by the pressure in a braking cylinder 4.
  • a hydraulic proportional valve 9 is used to change the pressure in the braking cylinder 4 .
  • An electronic circuit 7 is provided to change a reference value of the proportional valve, based on an operating algorithm, which is based on a measured value of movement of the haulage cable 6 that is measured by a sensor 1.
  • the speed of movement of the haulage cable 6 is measured on a pulley 11, through which the haulage cable 6 is led.
  • the pulley 11 is provided with holes that are detected by the sensor 1.
  • the task of the electronic circuit 7 is to measure the speed of movement of the haulage cable 6 when going downhill in the first phase and to influence the pressure in the proportional valve 9 in the second phase.
  • a signal from the sensor 1 and the holes on the pulley 11 are used. While the pulley 11 is rotating the sensor 1 detects a hole in the pulley 11: With the sensor 1 above a hole, the output status of the sensor 1 is logical '0' otherwise the output status is logical '1'. Based on the changing of the logical value of the sensor 1 output, the speed of movement of the haulage cable 6 can be determined by using data on:
  • the electronic circuit 7 can have influence on the speed of movement of an empty carriage and also on the movement of a loaded haulage cable at the top of the cableway where an unknown quantity of round timber (various loads) is lowered.
  • the force of the brake 3 needs to be regulated.
  • the force of the brake depends on various factors such as load mass, terrain inclination, setting of a pre-brake, current speed of the carriage and quantity of the haulage cable on the drum.
  • the electronic circuit 7 also provides for a function of load weighing.
  • the force needed on the braking cylinder 4 for the load to start moving should be determined (a rough value needed for such load on the braking cylinder is thus determined). By determining this force the following factors in the system are done away with: load mass, terrain inclination and pre-brake setting.
  • the pressure in the braking cylinder 4 is gradually increased for weighing purposes. As the pressure is increased, the braking cylinder 4 gets gradually opened. The position of the haulage cable 6 changes during the entire opening interval. When the haulage cable 6 moves, the electronic circuit 7 records the current pressure needed to make the load (attached to the haulage cable 6) start moving. Due to various loads, different pre-settings of the brake 3, different terrains this value can considerably vary between situations.
  • the electronic circuit 7 consists of a comparator 13 of desired speed 12 of the haulage cable 6 and of the actual speed 20 of the carriage 10, and an output of a proportional regulator 14 is connected to the first part of an adder 15 and the second part of the adder - pre-controller 17 is an output of an additional function of weighing a load 18 that is determined on the basis of pulse counts from the sensor of movement 21 that is monitored while the ramp 19 function is controlled, and the output of the additional function of weighing of the load 18 is also a function of changing the proportional parameter of the regulator 14.
  • Such method of weighing the load provides an indication on an approximate pressure value that is needed for the brake 3 to brake very smoothly (pre-control). And yet, the speed of the carriage and the load would remain uncontrolled if only such mode of control (without a regulator) were used.
  • Figure 4 shows a block diagram of a regulator for controlling a speed of the carriage.
  • a regulator for controlling a speed of the carriage.
  • the current data on the speed of movement of the haulage cable 6 are needed apart from the pre-control.
  • a regulation scheme of operating such system contains a P speed regulator with an added pre-control that is determined by the function of load weighing.
  • the used linear P-regulator changes the reference value of the proportional valve 9 on the basis of a difference between the reference and actual speed of movement of the haulage cable 6.
  • a parameter of the P-regulator changes with respect to the mass of the regulated load.
  • the output value of the regulator is limited within the range determined by a proportional hydraulic valve that is controlled via D/A converter.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control And Safety Of Cranes (AREA)
  • Types And Forms Of Lifts (AREA)
EP15169142.5A 2014-05-27 2015-05-26 Treuil à câble avec régulation contrôlée automatiquement de la vitesse de déroulement d'un câble de traction Active EP2949615B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SI201400198A SI24711B (sl) 2014-05-27 2014-05-27 Vitel s samodejnim nadzorovanim uravnavanjem hitrosti odvijanja vlečne vrvi

Publications (2)

Publication Number Publication Date
EP2949615A1 true EP2949615A1 (fr) 2015-12-02
EP2949615B1 EP2949615B1 (fr) 2018-07-11

Family

ID=53502414

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15169142.5A Active EP2949615B1 (fr) 2014-05-27 2015-05-26 Treuil à câble avec régulation contrôlée automatiquement de la vitesse de déroulement d'un câble de traction

Country Status (2)

Country Link
EP (1) EP2949615B1 (fr)
SI (1) SI24711B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3388386A1 (fr) * 2017-04-13 2018-10-17 Uniforest, D.o.o. Treuil forestier équipé d'un ensemble de mesure de la puissance de freinage et son procédé de fonctionnement
CN111176156A (zh) * 2019-12-25 2020-05-19 长江水利委员会水文局长江中游水文水资源勘测局 缆道远程现地控制设备
CN114153238A (zh) * 2021-11-30 2022-03-08 中天科技海缆股份有限公司 目标线缆的控制方法和装置、存储介质及电子装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110428589B (zh) * 2019-07-29 2020-08-21 精英数智科技股份有限公司 监控方法、装置、设备和存储介质

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4187681A (en) * 1978-08-28 1980-02-12 Bucyrus-Erie Company Hydrostatic winch
DE4130970A1 (de) * 1990-09-18 1992-04-02 Anglo Amer Corp South Africa Steuersystem fuer eine bergwerkswinde
JP2000063086A (ja) * 1998-06-10 2000-02-29 Hitachi Constr Mach Co Ltd 巻上ウインチの制御装置
US6644629B1 (en) * 1998-10-14 2003-11-11 Hitachi Construction Machinery Co., Ltd. Overwinding prevention device for winch
US20050114001A1 (en) * 2002-11-25 2005-05-26 Key Energy Services, Inc. Multiple sensor for preventing a crown-block incursion on an oil well rig
CN202164072U (zh) * 2011-06-28 2012-03-14 广东力特工程机械有限公司 一种流动式起重机卷扬过速保护器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4187681A (en) * 1978-08-28 1980-02-12 Bucyrus-Erie Company Hydrostatic winch
DE4130970A1 (de) * 1990-09-18 1992-04-02 Anglo Amer Corp South Africa Steuersystem fuer eine bergwerkswinde
JP2000063086A (ja) * 1998-06-10 2000-02-29 Hitachi Constr Mach Co Ltd 巻上ウインチの制御装置
US6644629B1 (en) * 1998-10-14 2003-11-11 Hitachi Construction Machinery Co., Ltd. Overwinding prevention device for winch
US20050114001A1 (en) * 2002-11-25 2005-05-26 Key Energy Services, Inc. Multiple sensor for preventing a crown-block incursion on an oil well rig
CN202164072U (zh) * 2011-06-28 2012-03-14 广东力特工程机械有限公司 一种流动式起重机卷扬过速保护器

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3388386A1 (fr) * 2017-04-13 2018-10-17 Uniforest, D.o.o. Treuil forestier équipé d'un ensemble de mesure de la puissance de freinage et son procédé de fonctionnement
CN111176156A (zh) * 2019-12-25 2020-05-19 长江水利委员会水文局长江中游水文水资源勘测局 缆道远程现地控制设备
CN114153238A (zh) * 2021-11-30 2022-03-08 中天科技海缆股份有限公司 目标线缆的控制方法和装置、存储介质及电子装置

Also Published As

Publication number Publication date
SI24711A (sl) 2015-11-30
SI24711B (sl) 2023-08-31
EP2949615B1 (fr) 2018-07-11

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