CN111348164A - Single-direction and two-direction switching pulley device for sailing boat - Google Patents
Single-direction and two-direction switching pulley device for sailing boat Download PDFInfo
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- CN111348164A CN111348164A CN202010226703.1A CN202010226703A CN111348164A CN 111348164 A CN111348164 A CN 111348164A CN 202010226703 A CN202010226703 A CN 202010226703A CN 111348164 A CN111348164 A CN 111348164A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H9/00—Marine propulsion provided directly by wind power
- B63H9/04—Marine propulsion provided directly by wind power using sails or like wind-catching surfaces
- B63H9/08—Connections of sails to masts, spars, or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H9/00—Marine propulsion provided directly by wind power
- B63H9/04—Marine propulsion provided directly by wind power using sails or like wind-catching surfaces
- B63H9/08—Connections of sails to masts, spars, or the like
- B63H2009/088—Means for tensioning sheets, or other running rigging, adapted for being guided on rails, or the like mounted on deck, e.g. travellers or carriages with pulleys
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- Ocean & Marine Engineering (AREA)
- Mechanical Operated Clutches (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The invention discloses a single-direction and double-direction switching pulley device for a sailing boat, which comprises a left side plate, a right side plate and a synchronizing wheel, wherein the middle part of the inner peripheral surface of the synchronizing wheel is provided with a circle of inner gear teeth distributed annularly, the inner sides of the left side plate and the right side plate are respectively provided with annular wheel holders at intervals, the inner peripheral surface of the synchronizing wheel is positioned at two sides of the inner gear teeth and is respectively matched with the outer peripheral surfaces of the annular wheel holders on the left side plate and the right side plate in a sliding way, a moving pin is arranged between the left side plate and the right side plate, two ends of the moving pin are respectively assembled in pin holes of the left side plate and the right side plate in a sliding way, the middle part of the moving pin is provided with a cylindrical part and a conical part, one side plate is provided with a pin and a shifting fork sleeved on the pin, the shifting end of the shifting fork is lapped on the outer surface of the cylindrical part or the conical part in a sliding way, the high-low teeth meshed, the synchronizing wheel rotates in two directions.
Description
Technical Field
The invention relates to a single-direction and two-direction switching pulley device for a sailing boat, in particular to a sail surface control device suitable for the sailing boat for training and competition, and belongs to the technical field of sailing boat control devices.
Background
Sailing boat sports is a sports item integrating sports, fitness, leisure, exploration and tourism, which is developed by people driving boats and acts on sails by means of natural wind power, and is one of the most popular sports in coastal countries, particularly developed countries and regions in the world. The Chinese economy is developed at a high speed for 40 years, the material culture level of people is obviously improved, the leisure and fitness consciousness is continuously improved, the sailing boat sports which is healthy sunlight and suitable for the old and the young generates vitality step by step in China, and the domestic modern sailing boat manufacturing industry rapidly walks on the way from inexistence to existence, and from the production of substitute industry to the establishment of an independent brand.
From the fluid mechanics perspective, the sailing boat is in an unpowered floating motion state under the combined action of wind, current and waves, and in order to enable the sailing boat to reach a specified destination in the shortest time, a driver needs to frequently adjust the inclination angle and the azimuth of the flexible sail, and for a small sailing boat, the work is mainly realized through the matching of a rope and a pulley. When the sailing boat turns or the sail needs to be adjusted due to the change of the wind direction, the pulley is in a bidirectional rotation mode; when the position of the sail needs to be fixed in the course running stage, the pulley is switched to a unidirectional rotation mode so as to reduce the operation intensity of a sailing boat driver.
In the international market, the pulley is mainly designed by European and American national companies at present, and the highest market share is products of American HARKEN company and Australian RONSTAN company. The above company samples were analyzed and found to switch steering modes, which were basically achieved by a paddle or knob, and the pulley configuration is shown in fig. 1. Because the poking direction of the poking piece and the knob is parallel to the movement direction of the pulley shell and the rope, and the pulley and the rope are in a non-fixed state, a driver is difficult to apply acting force to the poking piece/the knob by one hand and needs to vacate the other hand to hold the pulley to form support. Generally speaking, sailboat riders always keep control of the rudder or the wrest line or the like with one hand at any time (especially for single-person operated sailboats), and if forced to give up control of the sailboat because of the need to adjust the plectrum/knob of the pulley, when the sailboat is running near the front or back of the turn, or when strong shear wind is encountered, the result is reduced steering efficiency and reduced safety level, which often have serious adverse consequences for competitive sailboat movements.
Fig. 1 shows a conventional pulley device, which includes a synchronizing wheel and left and right side plates, and a one-way control device is a shifting piece 101. In the market, common pulleys can be switched in a one-way and two-way mode only by two hands, namely one hand grasps the pulleys and the other hand rotates the one-way control device on the pulleys, but then sailing boat drivers are forced to temporarily give up control over rudders or wrest lines and the like, so that the operation efficiency is reduced, the safety level is reduced, and serious adverse effects are often brought to competitive sailing boat movement.
Disclosure of Invention
The invention aims to provide a single-direction and two-direction switching pulley device for a sailing boat, which can simply realize single-direction and two-direction mode switching and is used for solving the technical problem that the pulleys for the sailing boat in the prior art are not easy to perform single-direction and two-direction switching by a single hand.
The invention adopts the following technical scheme: a single and double direction switching pulley device for sailing boat comprises a left and a right side plates fixedly connected with each other at the lower part and an annular synchronizing wheel assembled between the left and the right side plates in a sliding way, wherein an annular rope groove for a rope to pass through is arranged on the outer peripheral surface of the synchronizing wheel, a circle of inner wheel teeth distributed in an annular way is arranged in the middle of the inner peripheral surface of the synchronizing wheel, annular wheel supports are respectively arranged on the adjacent inner sides of the upper parts of the left and the right side plates, positioning pieces are respectively arranged at intervals inside the annular wheel supports of the left and the right side plates, after the positioning pieces on the left and the right side plates are connected with each other, intervals are arranged between the annular wheel supports on the left and the right side plates, the parts of the inner peripheral surface of the synchronizing wheel, which are positioned at both sides of the inner wheel teeth, are annular sliding parts, the sliding parts are positioned at the outer periphery of the annular wheel supports, the middle part of the moving pin is provided with a cylindrical part and a conical part which are connected together, the large end of the conical part has the same diameter as the cylindrical part and is fixedly connected with the cylindrical part, the moving pin is respectively provided with a blocking surface at the position close to the cylindrical part and the conical part, a pin is fixedly arranged at the position on one side plate, which is positioned at the inner side of the positioning part in the annular wheel support, the pin is parallel to the axis of the moving pin, a shifting fork is arranged on the pin, the shifting fork comprises an annular connecting part, a shifting end and a gear tooth end, which are fixed at the periphery of the annular connecting part, the annular connecting part is sleeved on the pin, a torsion spring is arranged between the annular connecting part and the pin, the included angle between the shifting end and the gear tooth end is more than 90 degrees, the shifting end is in sliding lap joint with the outer surface of the cylindrical part or the conical part, the end part of the gear tooth is provided with high-low teeth which, when the shifting end is contacted with the cylindrical part, the high-low teeth of the gear tooth end are meshed with the inner gear teeth, the synchronous wheel rotates in a single direction, and when the shifting end is contacted with the conical part, the gear tooth end is separated from the inner gear teeth, and the synchronous wheel rotates in two directions.
The ball rolling device is characterized in that a ball is arranged between the sliding part and the annular wheel support, a roller path for mounting the ball is arranged at the root of the periphery of the annular wheel support, and the ball is arranged between the sliding part and the annular wheel support in a rolling mode.
The middle part of the positioning piece is provided with an open slot, and the end part of the positioning piece on one side plate is inserted into the open slot of the positioning piece on the other side plate in the left side plate and the right side plate.
The outer end face of the moving pin, which is close to the conical portion, is provided with a one-way arrow, and the outer end face of the moving pin, which is close to the cylindrical portion, is provided with a two-way arrow.
The shapes of the two ends of the moving pin are different, and the shapes of the pin holes in the left side plate and the right side plate are respectively corresponding to the shapes of the two ends of the moving pin.
The end part of the moving pin close to the conical part is circular, the end part of the moving pin close to the cylindrical part is in a quincunx shape, and one pin hole and the other pin hole on the left side plate and the right side plate are in quincunx shape and round holes respectively.
The annular rope groove is internally provided with a ridge line.
The periphery of the root of the pin is provided with an annular groove, and the torsion spring is arranged in the annular groove.
The annular wheel supports on the left side plate and the right side plate are respectively connected with the left side plate and the right side plate integrally, and reinforcing ribs are arranged on the inner sides of the annular wheel supports in the radial direction.
The shifting fork, the moving pin and the synchronizing wheel are all made of titanium alloy or aluminum alloy.
The invention has the beneficial effects that: according to the invention, the cylindrical part and the conical part of the unidirectional and bidirectional switching shaft of the moving pin are respectively contacted with the shifting end of the shifting fork by pressing the moving pin, and when the shifting end is contacted with the cylindrical part, the high and low teeth of the gear tooth end are meshed with the inner gear teeth, so that the synchronizing wheel rotates in a unidirectional way; when the stirring end is contacted with the conical part, the gear tooth end is separated from the inner gear tooth under the action of the torsion spring, and the synchronous wheel rotates in two directions. When the pulley device is used, the left side plate and the right side plate are connected with the ship body through the lock catches, the rope penetrates through the annular rope grooves of the synchronizing wheels, a driver presses the moving pin to drive the shifting fork to rotate, and the pulley is switched between a one-way mode and a two-way mode. Under the general condition, the pulleys are in a bidirectional mode, when the sail surface is subjected to large wind acting force and the tensile force of the ropes needs to be kept, a driver can grasp the wheel changing by one hand and simultaneously press the moving pin, so that the ropes connected with the sail surface can only pass through the pulleys in a unidirectional mode, and the operation intensity of a sailing boat driver is reduced. Compared with the prior art, the pulley has the advantages that the function of the pulley is unchanged, but the operation mode is changed from the mode of poking the poking piece or rotating the knob to the mode of pressing the moving pin, namely the operation is changed from the mode of applying force parallel to the plane of the side plate/rope to the mode of applying force perpendicular to the plane of the side plate/rope, and the single-hand operation can be easily realized. According to the shifting fork and the moving pin with the conical part, the pressing force applied to the moving pin and perpendicular to the side plate can be realized through the matching of the shifting fork and the moving pin, the shifting fork is turned into the blocking force for propping against the inner gear teeth of the synchronous wheel, and the shifting fork can be tightly matched with the moving pin by rotating a small angle, so that the structure is simple, and the connection is firm. The invention changes the realization mode of the pulley one-way and two-way switching in the prior art, and can easily realize the switching of the one-way and two-way modes by one hand.
Preferably, the balls are arranged between the sliding part and the annular wheel support, so that the friction force between the sliding part and the annular wheel support can be reduced, and the wear resistance of the pulley is improved.
Preferably, the positioning parts on the left side plate and the right side plate are mutually meshed through the grooves on the plurality of positioning parts, so that the pulley device is easy to fix and install. When the assembling is carried out, the left side plate and the right side plate can be tightly matched by rotating a small angle, the structure is simple, and the connection is firm.
Preferably, two ends of the moving pin are respectively provided with a bidirectional arrow and a unidirectional arrow, so that a driver can distinguish and control the unidirectional or bidirectional rotation of the synchronizing wheel conveniently.
Preferably, two ends of the moving pin are in two different shapes, so that a driver can distinguish and control the one-way or two-way rotation of the synchronizing wheel conveniently.
Preferably, the ridges in the annular groove increase the friction when the rope passes through.
Preferably, on the basis of not obviously increasing the weight of the whole pulley device, the common plastic material of the pulley is changed into titanium alloy material or aluminum alloy and other materials, so that the maximum load and the reliability of the pulley device are obviously improved.
Drawings
FIG. 1 is a schematic view of a prior art single and double direction switching sheave arrangement;
FIG. 2 is a plan view of two sides of a single double direction switching pulley device for a sailboat in accordance with an embodiment of the present invention;
FIG. 3 is a side view of FIG. 2;
FIG. 4 is a cross-sectional view (single direction of rotation) of FIG. 3; (the balls are omitted from the drawing)
FIG. 5 is a top view of FIG. 3 (single direction rotation); (the balls are omitted from the drawing)
FIG. 6 is a schematic structural view of a synchronizing wheel;
FIG. 7 is a schematic view of the left and right side plates of FIG. 3;
FIG. 8 is a schematic view of the fork and the shift pin assembled on the left side plate of FIG. 6;
FIG. 9 is a side view of FIG. 7;
FIG. 10 is a schematic view of the shift pin and fork;
FIG. 11 is a schematic view of the fork and shift pin mating;
fig. 12 is an internal structural view of the pulley device in a bidirectional rotation state; (including balls in the figure)
Fig. 13 is a sectional view of the pulley device in a bidirectional rotation state; (the balls are omitted from the drawing)
FIG. 14 is a schematic view of the pulley apparatus with the synchronizing wheel removed;
fig. 15 is a table comparing the maximum load of the pulley device of the present embodiment with that of the pulley device of the prior art.
In the figure, 1-left and right side plates, 2-synchronous wheels, 21-annular rope grooves, 22-inner gear teeth, 23-sliding parts, 3-annular wheel brackets, 31-rolling ways, 32-rolling balls, 4-positioning pieces, 41-grooves, 5-pin holes, 51-plum blossom-shaped holes, 52-round holes, 6-moving pins, 61-cylindrical parts, 62-conical parts, 63-stopping surfaces, 7-pins, 8-torsion springs, 9-shifting forks, 91-annular connecting parts, 92-shifting ends, 93-gear tooth ends, 931-high teeth, 932-low teeth, 10-reinforcing ribs and 101-shifting pieces.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
The mono-bi directional switching pulley device for sailing boat according to an embodiment of the present invention is shown in fig. 1 to 13, and includes left and right side plates 1 fixedly coupled at lower portions thereof and a ring-shaped synchronizing wheel 2 slidably fitted between the left and right side plates 1, the synchronizing wheel and the left and right side plates being constructed as shown in fig. 6 and 7, respectively, the outer peripheral surface of the synchronizing wheel 2 is provided with an annular rope groove 21 for a rope to pass through, the annular rope groove 21 is internally provided with a ridge line, a circle of inner wheel teeth 22 distributed annularly are arranged in the middle of the inner circumferential surface of the synchronizing wheel 2, annular wheel supports 3 are respectively arranged on the adjacent inner sides of the upper parts of the left and right side plates 1, positioning pieces 4 are respectively arranged on the inner sides of the annular wheel supports 3 of the left and right side plates at intervals, an opening groove 41 is formed in the middle of the positioning piece 4, and the end of the positioning piece 4 on one side plate is inserted into the opening groove 41 of the positioning piece on the other side plate in the left side plate and the right side plate. The annular wheel supports 3 on the left side plate and the right side plate 1 are respectively connected with the left side plate and the right side plate integrally, reinforcing ribs 10 are arranged on the inner sides of the annular wheel supports 3 in the radial direction, and the synchronizing wheels 2 are made of titanium alloy.
After 4 interconnect of locating element on the curb plate 1 about, the interval has between the annular wheel on the curb plate holds in the palm 3, the position that the inner peripheral surface of synchronizing wheel 2 is located internal teeth of a cogwheel 22 both sides is annular sliding part 23, sliding part 23 is located annular wheel and holds in the palm 3 periphery and hold in the palm 3 concentric settings with the annular wheel, be equipped with ball 32 between sliding part 23 and the annular wheel support 3, be equipped with the raceway 31 that is used for installing ball 32 on the root of annular wheel support 3 periphery, ball 32 rolling installation is between sliding part 23 and annular wheel support 3, the ball can reduce the frictional force between sliding part and the annular wheel support, improve the wear resistance of pulley. The left side plate 1 and the right side plate 1 are respectively provided with a pin hole 5 coincident with the axis of the annular wheel support 3, a moving pin 6 is arranged between the left side plate 1 and the right side plate 1, two ends of the moving pin 6 are respectively assembled in the pin holes 5 of the left side plate and the right side plate in a sliding way, the middle part of the moving pin 6 is provided with a cylindrical part 61 and a conical part 62 which are connected together, the large end of the conical part 62 has the same diameter as the cylindrical part 61 and is fixedly connected with the cylindrical part 61, the moving pin 6 is respectively provided with a stop surface 63 at the position close to the cylindrical part 61 and the conical part 62, a pin 7 is fixedly arranged at the position on the inner side of a positioning part 4 in the annular wheel support 3 on one side plate, the pin 7 is parallel to the axis of the moving pin 6, a shifting fork 9 is arranged on the pin 7, the shifting fork 9 comprises an annular connecting part 91 and a shifting end 92 and a gear, the periphery of the root of the pin 7 is provided with an annular groove, and the torsion spring 8 is arranged in the annular groove. The included angle between the poking end 92 and the gear tooth end 93 is larger than 90 degrees, the poking end 92 is overlapped on the outer surface of the cylindrical part 61 or the conical part 62 in a sliding way, the end part of the gear tooth end 93 is provided with high and low teeth meshed with the inner gear teeth 22, the high and low teeth comprise high teeth 931 positioned at the end part of the gear tooth end 93 and low teeth 932 positioned at one side of the gear tooth end 93 far away from the poking end 92, the high and low teeth of the gear tooth end 93 are meshed with the inner gear teeth 22 when the poking end 92 is in contact with the cylindrical part 61, the synchronous wheel 2 rotates in one direction, the gear tooth end 93 is separated from the inner gear teeth 22 when the poking end 92 is in contact with the conical part, and the.
In this embodiment, the outer end surface of the moving pin 6 near the tapered portion 62 has a double-headed arrow, and the end portion is in a quincunx shape; the outer end face of the moving pin 6 near the cylindrical portion 61 has a one-way arrow, and the end portion is circular. In fig. 6, the annular rope groove 21 of the synchronizing wheel is designed with ridges to increase the friction force when the rope passes through, the inner side of the synchronizing wheel is provided with inner gear teeth 21, and the high-low teeth of the tooth end 93 of the shifting fork wheel and the inner gear teeth 21 of the synchronizing wheel meet the meshing condition.
As shown in fig. 7, the left and right side plates 1 are assembled together by three pairs of mutually matched positioning members 4, and one of the pin holes of the left and right side plates 1 is a quincuncial hole 51, and the other pin hole is a circular hole 52, which are respectively matched with two ends of the moving pin 6. The side plate on the left in fig. 7 has a pin 7 for mounting a fork 9. As shown in fig. 8 and 9, a torsion spring 8 is installed between the shifting fork 9 and the annular groove at the bottom of the pin 7, and the torsion spring 8 provides stable assistance for the shifting fork 9, so that the shifting end 92 of the shifting fork is kept in a state of being overlapped on the cylindrical part 61 or the conical part 62; after the shifting fork 9 is assembled with the pin 7, the shifting fork 9 has a rotating circle center and a supporting point. When the shifting fork is used, the two ends of the moving pin 6 are pressed, so that the shifting end 92 is lapped on the cylindrical part or the conical part, and the gear tooth end 93 of the shifting fork is controlled to be in two positions. The stopper surfaces 63 of the moving pin 6 prevent the moving pin 6 from coming off the left and right side plates 1.
As shown in fig. 4 and 5, when the circular end of the moving pin is pressed, the moving pin moves to make the conical part contact with the shifting end of the shifting fork, the tooth end of the shifting fork wheel is engaged with the inner teeth of the synchronizing wheel under the action of a lever, the torsion spring assembled with the shifting fork is in a tension state, and the synchronizing wheel can only move from low to high at the tooth end of the shifting fork wheel due to the high and low teeth at the outer side and the high end part, namely, anticlockwise unidirectional movement, which is represented as a unidirectional pulley.
As shown in fig. 12 and 13, when the quincunx end of the moving pin is pressed, the moving pin moves to enable the cylindrical part of the moving pin to be in contact with the shifting end of the shifting fork, the annular connecting part of the shifting fork rotates in the pin, the torsion spring assembled with the shifting fork is in a loose state, the tooth end of the shifting fork wheel is disengaged from the inner teeth of the rotating wheel, the synchronous wheel can do bidirectional movement clockwise and anticlockwise, and the synchronous wheel is represented as a bidirectional pulley.
Compared with the prior art, the pulley has the advantages that the function of the pulley is unchanged, but the operation mode is changed from the mode of poking the poking piece or rotating the knob to the mode of pressing the moving pin, namely the operation is changed from the mode of applying force parallel to the plane of the side plate/rope of the pulley to the mode of applying force vertical to the plane of the side plate/rope of the pulley, and the single-hand operation can be easily realized.
According to the invention, the common plastic material of the synchronous wheel is changed into a metal material with low density and high specific strength (bending strength sigma/density rho), so that under the condition that the weight of the whole machine is basically kept unchanged, the maximum load is obviously improved, and the experimental result is shown in figure 15. Fig. 15 is a table comparing the maximum load of the pulley device of the present embodiment with that of the pulley device of the prior art.
The above embodiment is a preferred embodiment of the present invention, and in other embodiments of the present invention, the shapes of the two ends of the moving pin may be the same or different, and may also be other shapes; when the shapes of the two ends of the moving pin are different, the shapes of the pin holes on the left side plate and the right side plate are respectively corresponding to the same shapes of the two ends of the moving pin; the shifting fork, the moving pin and the synchronizing wheel can also be made of aluminum alloy and other materials.
Other variations and modifications of the invention can be made without departing from the spirit of the invention, and these modifications are intended to be within the scope of the invention as claimed.
Claims (10)
1. A unidirectional and bidirectional switching pulley device for a sailing boat comprises a left side plate and a right side plate which are fixedly connected together at the lower parts, and an annular synchronizing wheel which is assembled between the left side plate and the right side plate in a sliding way, wherein the outer peripheral surface of the synchronizing wheel is provided with an annular rope groove for a rope to pass through, and the unidirectional and bidirectional switching pulley device is characterized in that: the middle part of the inner peripheral surface of the synchronizing wheel is provided with a circle of inner wheel teeth distributed annularly, the adjacent inner sides of the upper parts of the left side plate and the right side plate are respectively provided with an annular wheel support, the inner sides of the annular wheel supports of the left side plate and the right side plate are respectively provided with a positioning piece at intervals, the positioning pieces on the left side plate and the right side plate are connected with each other, then, the annular wheel supports on the left side plate and the right side plate are provided with intervals, the parts of the inner peripheral surface of the synchronizing wheel, which are positioned at the two sides of the inner wheel teeth, are annular sliding parts, the sliding parts are positioned at the periphery of the annular wheel supports and are arranged concentrically with the annular wheel supports, the left side plate and the right side plate are respectively provided with pin holes coincident with the axis of the annular wheel supports, a moving pin is arranged between the left side plate and the right side plate, the two ends of the moving pin are respectively assembled, the gear shifting mechanism comprises a side plate, a positioning piece, a shifting fork, a gear tooth end, a torsion spring, a synchronizing wheel and a shifting wheel, wherein the side plate is positioned on the inner side of the positioning piece in the annular wheel support, the pin is fixedly provided with a pin, the pin is parallel to the axis of the shifting pin, the shifting fork is arranged on the pin and comprises an annular connecting portion, a shifting end and the gear tooth end, the shifting end and the gear tooth end are fixed on the periphery of the annular connecting portion, the annular connecting portion is sleeved on the pin and the pin, the torsion spring is arranged between the shifting end and the gear tooth end, the included angle between the shifting end and the gear tooth end is larger than 90 degrees, the shifting end is in sliding lap joint with the outer surface of a cylindrical portion or a conical portion, the gear tooth end is provided with high and low teeth meshed with inner gear teeth, the high and low teeth are positioned on the side, away from the shifting end, the high and low teeth are meshed with the.
2. The sailing boat uni-bi-directional switching sheave arrangement of claim 1, wherein: the ball rolling device is characterized in that a ball is arranged between the sliding part and the annular wheel support, a roller path for mounting the ball is arranged at the root of the periphery of the annular wheel support, and the ball is arranged between the sliding part and the annular wheel support in a rolling mode.
3. The sailing boat uni-bi-directional switching sheave arrangement of claim 1, wherein: the middle part of the positioning piece is provided with an open slot, and the end part of the positioning piece on one side plate is inserted into the open slot of the positioning piece on the other side plate in the left side plate and the right side plate.
4. The sailing boat uni-bi-directional switching sheave arrangement of claim 1, wherein: the outer end face of the moving pin, which is close to the conical portion, is provided with a one-way arrow, and the outer end face of the moving pin, which is close to the cylindrical portion, is provided with a two-way arrow.
5. The sailing boat uni-bi-directional switching sheave arrangement of claim 1, wherein: the shapes of the two ends of the moving pin are different, and the shapes of the pin holes in the left side plate and the right side plate are respectively corresponding to the shapes of the two ends of the moving pin.
6. The sailing boat uni-bi-directional switching sheave arrangement of claim 1, wherein: the end part of the moving pin close to the conical part is circular, the end part of the moving pin close to the cylindrical part is in a quincunx shape, and one pin hole and the other pin hole on the left side plate and the right side plate are in quincunx shape and round holes respectively.
7. The sailing boat uni-bi-directional switching sheave arrangement of claim 1, wherein: the annular rope groove is internally provided with a ridge line.
8. The sailing boat uni-bi-directional switching sheave arrangement of claim 1, wherein: the periphery of the root of the pin is provided with an annular groove, and the torsion spring is arranged in the annular groove.
9. The sailing boat uni-bi-directional switching sheave arrangement of claim 1, wherein: the annular wheel supports on the left side plate and the right side plate are respectively connected with the left side plate and the right side plate integrally, and reinforcing ribs are arranged on the inner sides of the annular wheel supports in the radial direction.
10. The sailing boat uni-bi-directional switching sheave arrangement of claim 1, wherein: the shifting fork, the moving pin and the synchronizing wheel are all made of titanium alloy or aluminum alloy.
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| CN202010226703.1A CN111348164B (en) | 2020-03-25 | 2020-03-25 | Single-direction and two-direction switching pulley device for sailing boat |
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| CN202010226703.1A CN111348164B (en) | 2020-03-25 | 2020-03-25 | Single-direction and two-direction switching pulley device for sailing boat |
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| CN111348164B CN111348164B (en) | 2021-12-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102530964B1 (en) * | 2023-01-02 | 2023-05-11 | 김윤장 | fishing boat sail device |
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| FR2228025A1 (en) * | 1973-02-12 | 1974-11-29 | Tompa Pierre | Sailing boat lifting tackle - incorporates clutch engaged by distortion of resilient bush |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102530964B1 (en) * | 2023-01-02 | 2023-05-11 | 김윤장 | fishing boat sail device |
Also Published As
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|---|---|
| CN111348164B (en) | 2021-12-28 |
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