EP0653374A1 - Einholvorrichtung - Google Patents

Einholvorrichtung Download PDF

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Publication number
EP0653374A1
EP0653374A1 EP93116977A EP93116977A EP0653374A1 EP 0653374 A1 EP0653374 A1 EP 0653374A1 EP 93116977 A EP93116977 A EP 93116977A EP 93116977 A EP93116977 A EP 93116977A EP 0653374 A1 EP0653374 A1 EP 0653374A1
Authority
EP
European Patent Office
Prior art keywords
guide pulley
winding
towing
towing apparatus
cable
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
EP93116977A
Other languages
English (en)
French (fr)
Other versions
EP0653374B1 (de
Inventor
Makoto C/O Kabushiki Kaisha Honda Sanada
Masayoshi C/O Kabushiki Kaisha Honda Orita
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.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to DE1993614040 priority Critical patent/DE69314040T2/de
Priority to EP19930116977 priority patent/EP0653374B1/de
Priority to ES93116977T priority patent/ES2108185T3/es
Publication of EP0653374A1 publication Critical patent/EP0653374A1/de
Application granted granted Critical
Publication of EP0653374B1 publication Critical patent/EP0653374B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the present invention relates to a towing apparatus for towing a paraglider or drawing a beach seine.
  • a known towing apparatus of this kind disclosed in Japanese Patent Laid-open (Kokai) No. 3-95098 comprises a power unit, a brake unit mounted on the output shaft of the power unit, a winding drum mounted on the output shaft of the power unit and combined with the brake unit to wind a tow cable thereon, and a guide pulley disposed above the winding drum so as to be swingable in horizontal directions to guide the tow cable when winding the tow cable on and unwinding the tow cable from the winding drum.
  • control levers including a brake lever and a throttle lever for controlling the winding operation of the winding drum are arranged in the vicinity of the tow cable and on both sides of the guide pulley. Therefore, the towing apparatus needs protective members for obviating the interference between the tow cable and the control levers, which inevitably makes the construction of the towing apparatus complex.
  • the present invention has been made in view of those problems in the prior art and it is therefore an object of the present invention to provide a towing apparatus provided with control levers, a guide pulley and a tow cable arranged so that the control levers will not interfere with the guide pulley and the tow cable, and having a construction having high degree of freedom.
  • the present invention provides a towing apparatus comprising a power unit provided with a brake unit and a winding drum, a tow cable wound on the winding drum, and a guide pulley for guiding the tow cable when winding the tow cable on and unwinding the same from the winding drum.
  • the angular position of the guide pulley with respect to a horizontal plane can be changed in a specified angular range, a brake operating lever and a winding operation control lever included in the power unit are disposed outside a range in which the angular position of the guide pulley is changed.
  • the winding operation control lever is disposed on the same level as the guide pulley on the side opposite the towing side with respect to a guide pulley support unit supporting the guide pulley.
  • the guide pulley is disposed above a straight line passing the winding operation control lever and the free end of a foldaway stay in a fully unfolded state, and the winding drum is disposed with its axis positioned below the straight line.
  • the guide pulley is able to swing only in the specified angular range, and any control lever is not disposed within the range in which the guide pulley swings.
  • FIG. 1 is a front view of a towing apparatus embodying the present invention
  • Fig. 2 is a side view of the towing apparatus of Fig. 1
  • Fig. 3 is a plan view of the towing apparatus of Fig. 1
  • Fig. 4 is a pictorial view of the towing apparatus of Fig. 1 in operation
  • Fig. 5 is an enlarged side view of a foldaway stay.
  • the towing apparatus has a frame structure 1 consists of a substantially rectangular bottom frame 2, a post 3, a support frame 4 having the shape of an inverted letter U, and a top frame 5.
  • Foldaway stays 6 are joined pivotally, to brackets 7 fixed respectively to the four corners of the bottom frame 2.
  • Each foldaway stay 6 is fastened to the vertical arm of the bracket 7 by putting an eye-bolt 9 through a through hole 6a formed in the foldaway stay 6 and a through hole 7a formed in the vertical arm of the bracket 7 and securing the eye-bolt by a nut 8.
  • the nuts 8 are removed from the eye-bolts 9, the eye-bolts 9 are pulled out from the vertical arms of the brackets 7 and the foldaway stays 6, the foldaway stays 6 are unfolded, the eye-bolts 9 are put through the through holes 6a of the foldaway stays 6 and through holes 7b formed in the horizontal arms of the brackets 7, and then the nuts 8 are screwed on the eye-bolts 9 to fasten the foldaway stays 6 to the brackets 7.
  • the foldaway stays 6 are unfolded when the towing apparatus is used, and the foldaway stays 6 are folded up to facilitate the transportation of the towing apparatus.
  • the towing apparatus has a power unit 12 formed by integrally combining an engine 10 and a transmission 11 provided with a centrifugal clutch.
  • a brake unit 14 and a winding drum 16 for winding a tow cable 15 are mounted on the output shaft 13 of the transmission 11.
  • a guide pulley 17 Shown also in the drawings are a guide pulley 17, an exhaust muffler 18, a fuel tank 19, an air cleaner 20, a control handle 21, i.e., a winding operation control lever, and a brake lever 22, i.e., a brake operating lever.
  • the power unit 12 is supported on the post 3 and the support frame 4 having the shape of an inverted letter U.
  • the free end of the tow cable 15 extending from the winding drum 16 via the guide pulley 17 is joined to a flier F hanging on a paraglider P.
  • the power unit 12 is supported by support pins 60 and 61 on the post 3.
  • the support pin 60 is attached to a bracket 62 projecting from the post 3, and the support pin 61 is attached to one end of a link 74 connected to the power unit 12 and having the other end joined to a bracket 63.
  • the control handle 21 and the brake lever 22 of the power unit 12 are disposed outside the angular range of swivel motion of the guide pulley 17 substantially on the same height as the guide pulley 17.
  • the vertical center distance between the guide pulley 17 and the control handle 21 is B, and the horizontal distance between the center axis of the swivel support supporting the guide pulley 17 and the center axis of the control handle 21 is A.
  • the guide pulley 17 is disposed above a straight line L passing the control handle 21 and the free end of the foldaway stay 6 in the unfolded position, and the shaft 13 supporting the winding drum 16 is disposed below the straight line L.
  • the tow cable 15 is formed by connecting a kevlar cable and a nylon cable.
  • the length Lk (m) of the kevlar cable and the length Ln (m) of the nylon cable are determined so that the spring constant Kt of a portion of the tow cable 15 is within a desired range of spring constant.
  • Kk 100/Lk ⁇ dk
  • Kn 100/Ln ⁇ dn
  • 1/Kt 1/Kk + 1/Kn
  • Fig. 6 is a graph showing the relation between the length (m) of a portion of the tow cable 15 extending between the paraglider P and the winding drum 16, and the spring constant Kt (kgf/m), and values of spring constant Kt (kgf/m) meeting the weights (kg) of fliers.
  • a curve C indicates the variation of the spring constant Kt of the tow cable 15 with the length of the tow cable 15 when the tow cable 15 is formed by only a kevlar cable of 4 mm in diameter
  • a curve D indicates the spring constant Kt of the tow cable 15 with the length of the tow cable 15 when the tow cable 15 is formed by only a nylon cable of 6 mm in diameter.
  • the elongation percentage dk of the kevlar cable of 4 mm in diameter is 1 %
  • the elongation percentage dn of the nylon cable of 6 mm in diameter is 11.8 %. Accordingly, the tow cable 15 is able to absorb shocks and hence the power unit 12 need not be provided with any shock absorbing means.
  • an appropriate spring constant Kt of the tow cable 15 is 40 kgf/m to tow the paraglider P suspending a flier F of 50 kg in weight is 40 kgf/m, and 70 kgf/m to tow the paraglider F suspending a flier F of 80 kg in weight.
  • the power unit 12 is formed by integrally combining the engine 10 and the transmission 11 provided with a centrifugal clutch.
  • a driving pulley 26 consisting of a first part 26a and a second part 26b is mounted on the crankshaft 25 of the engine 10.
  • a V-belt 27 is wound round the driving pulley 26.
  • Shown also in Fig. 7 are a cylinder 28, a piston 29, a cylinder head 30 and an exhaust pipe 31.
  • a driven pulley 36 consisting of a first part 36a integrally provided with an inner sleeve 37, and a second part 36b integrally provided with an outer sleeve 38 is mounted on the input shaft 35 of the transmission 11.
  • the inner sleeve 37 and the outer sleeve 38 are interlocked by inserting a guide pin 39 fixed to the inner sleeve 37 in a cam slot 40 formed in the outer sleeve 38.
  • the second part 36b is a movable driven part moved by a cam mechanism consisting of the guide pin 39 and the cam slot 40.
  • the second part 36b is pressed toward the first part 36a by a compression spring 42 extending between the second part 36b and a driving clutch plate 41 fixed to the inner sleeve 37.
  • the V-belt 27 is extended between the driving pulley 26 and the driven pulley 36.
  • a centrifugal clutch 45 comprises the driving clutch plate 41, expanding friction shoes 43 mounted on the driving clutch plate 41, and a clutch drum 44 fixed to one end of the input shaft 35 so as to cover the driving clutch plate 41.
  • the driving clutch plate 41 rotates at a rotating speed exceeding a predetermined rotating speed
  • the expanding friction shoes 43 come into contact with the clutch drum 44 to transmit the rotation of the driven pulley 36 through the driving clutch plate 41, the expanding friction shoes 43 and the clutch drum 44 41 to the input shaft 35 of the transmission 11.
  • a pinion 46 is mounted on the other end of the input shaft 35 to drive the output shaft 13 of the transmission 11 through a gear 47, a pinion 48, and a gear 49 fixed to the output shaft 13.
  • the brake drum 50 of the brake unit 14 is welded to a sleeve 51, and the winding drum 16 for winding the tow cable 15 is welded to the brake drum 50.
  • the sleeve 51 is put on the output shaft 13 and secured to the same with a nut 52.
  • Brake shoes 53 are arranged near the inner circumference of the brake drum 50 so as to be brought into frictional contact with the brake drum 50 by cams, not shown, which are operated by a brake cable.
  • the centrifugal clutch 45 is housed in a clutch case 54.
  • the guide pulley does not interfere with the operation of the control levers because the guide roller swings within a fixed angular range of swing motion and the control levers are disposed outside the range of swing motion of the guide pulley.
  • control levers are arranged on the same level as the guide pulley, the operator is able to operate the control levers, paying attention to the direction of the guide pulley.
  • Fig.8 shows the perspective view of the towing appararus which is further equipped with communication lamps 110 which is mounted on the upper part of the support frame 4.
  • the communication lamp 110 is consist of three types of color 110a 110b 110c which are selectively lighted on when signal swich 100 is operated by the operator.
  • the signal switch 100 is mounted on the winding operatioin control handle 21 at the opposite side to the brake lever 22.
  • a stop switch 101 is mounted on the same side of the winding oparation handle 21, so that the operator can easily stop the engine 10.
  • the emgine 10 is started by the starter motor which is not shown, is mounted on the the control handle 21 near to the stop switch 101.
  • the main switch 102 is eqquiped on the top frame 5 near to the control handle 21.
  • Fig. 1 is a front view of a towing apparatus in a preferred embodiment according to the present invention.
  • Fig. 2 is a side view of the towing apparatus of Fig. 1.
  • Fig. 3 is a plan view of the towing apparatus of Fig. 1.
  • Fig. 4 is a pictorial view of the towing apparatus of Fig. 1 in operation.
  • Fig. 5 is an enlarged view of a foldaway stay.
  • Fig. 6 is a graph showing the relation between the spring constant Kt (kgf/m) of a portion of a tow cable and the length (m) of the portion of the tow cable.
  • Fig. 7 is a sectional view of a power unit.
  • Fig. 8 is a perspective view of the towing apparatus.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)
  • Flexible Shafts (AREA)
  • Braking Arrangements (AREA)
  • Motorcycle And Bicycle Frame (AREA)
EP19930116977 1993-10-20 1993-10-20 Einholvorrichtung Expired - Lifetime EP0653374B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE1993614040 DE69314040T2 (de) 1993-10-20 1993-10-20 Einholvorrichtung
EP19930116977 EP0653374B1 (de) 1993-10-20 1993-10-20 Einholvorrichtung
ES93116977T ES2108185T3 (es) 1993-10-20 1993-10-20 Aparato remolcador.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19930116977 EP0653374B1 (de) 1993-10-20 1993-10-20 Einholvorrichtung

Publications (2)

Publication Number Publication Date
EP0653374A1 true EP0653374A1 (de) 1995-05-17
EP0653374B1 EP0653374B1 (de) 1997-09-17

Family

ID=8213358

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930116977 Expired - Lifetime EP0653374B1 (de) 1993-10-20 1993-10-20 Einholvorrichtung

Country Status (3)

Country Link
EP (1) EP0653374B1 (de)
DE (1) DE69314040T2 (de)
ES (1) ES2108185T3 (de)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2896911A (en) * 1955-03-31 1959-07-28 Edward F Carpenter Cable puller
US3322398A (en) * 1965-12-30 1967-05-30 Hayward H Plumadore Portable power-driven winch device
CH603393A5 (en) * 1975-11-21 1978-08-15 Alfatech Ag Winch and rope launcher for gliders
CA1207748A (en) * 1983-09-07 1986-07-15 Emil J. David Portable log skidder
GB2220908A (en) * 1988-06-16 1990-01-24 Autosteer Controls Ltd Winching apparatus
DE3915501A1 (de) * 1989-05-12 1990-11-22 Rotzler Gmbh Co Transportable baueinheit mit einer seilwinde zum ziehen einer last
JPH0395098A (ja) * 1989-09-02 1991-04-19 Honda Motor Co Ltd 牽引装置
WO1993013006A1 (en) * 1991-12-23 1993-07-08 Cleveland Joe H A portable winch mounted on a backpack frame

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2896911A (en) * 1955-03-31 1959-07-28 Edward F Carpenter Cable puller
US3322398A (en) * 1965-12-30 1967-05-30 Hayward H Plumadore Portable power-driven winch device
CH603393A5 (en) * 1975-11-21 1978-08-15 Alfatech Ag Winch and rope launcher for gliders
CA1207748A (en) * 1983-09-07 1986-07-15 Emil J. David Portable log skidder
GB2220908A (en) * 1988-06-16 1990-01-24 Autosteer Controls Ltd Winching apparatus
DE3915501A1 (de) * 1989-05-12 1990-11-22 Rotzler Gmbh Co Transportable baueinheit mit einer seilwinde zum ziehen einer last
JPH0395098A (ja) * 1989-09-02 1991-04-19 Honda Motor Co Ltd 牽引装置
WO1993013006A1 (en) * 1991-12-23 1993-07-08 Cleveland Joe H A portable winch mounted on a backpack frame

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 15, no. 276 (M - 1135) 12 July 1991 (1991-07-12) *

Also Published As

Publication number Publication date
EP0653374B1 (de) 1997-09-17
ES2108185T3 (es) 1997-12-16
DE69314040T2 (de) 1998-01-22
DE69314040D1 (de) 1997-10-23

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