• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A boat lift for carrying a boat above water so as to prevent fouling comprises a - comprises a starboard float section and a port float section, - comprises a primary section comprising submersible primary buoys with chambers; and - comprises a secondary section comprising secondary floats for floating the boat lift in the sunken condition of the primary floats. To raise the boat lift, air is introduced into all rooms at the same time through the air intakes. Front chambers include means for limiting the outflow of water during a second air filling phase.
    公开号:BE1023451B1
    申请号:E2015/0200
    申请日:2015-07-20
    公开日:2017-03-23
    发明作者:Antonie Johannes VINK
    申请人:Ton Vink Beheer B.V.；
    IPC主号:
    专利说明:

    Boat lift
    The present invention relates to a boat lift for carrying a boat at least partly above the water, which boat lift has a front and a rear side and comprises a starboard section and a port side section for accommodating a boat between them, the starboard section and the port side section are connected to each other by means of at least one connecting element, - comprises two support regions spaced apart in the longitudinal direction of the boat lift for supporting the boat thereon in a relatively high, first condition of the boat lift, - a primary section comprising sinkable primary floats, each of the starboard float section and port float section comprising at least one sinkable primary float located between the front and rear, said sinkable primary floats having a chamber with an air inlet and a water outlet; and - comprises a secondary section connected to the primary section for causing the boat lift to float on the water of the boat lift in a relatively low, submerged, second state of the sinkable primary floats with at least one of the support areas below water, each of the starboard driving section and the port driving section comprising a secondary floating body located between the front and the rear.
    A boat lift is a floating device for raising and holding a boat when it is not being used. Fouling on the skin of the boat is thus avoided so that it can sail faster and / or with less energy consumption. This is particularly desirable for fast boats such as speedboats. Boat lifts are commercially available. They include sinkable primary floats. The boat must be sailed between the sunk primary floats. The sinkable primary floating bodies on either side of the boat are connected to each other, for example via at least two support arms, for supporting them against the bottom of the boat both near the front of the boat and near the rear of the boat. The boat is sunk above the boat lift in the sunk state of the primary floats, i.e. when the chambers are filled with water. Subsequently, air is introduced into the chambers whereby the water in the chambers is discharged through the water outlet and the buoyancy of the sinkable primary floats increases and the boat is lifted, generally until it is completely above the water level. The movements made by the boat lift must be checked for reliable lifting and lowering of the boat.
    A boat lift according to the preamble is known in the art.
    The object of the present application is to provide a boat lift with which the slope of the boat lift during lifting or lowering of the boat can be limited in a simple and reliable manner.
    To this end, a boat lift according to the preamble is characterized in that for each of the starboard section and the port side section, at least one primary float defines at least one front chamber and one rear chamber, each chamber having a front that is relatively close to the front of the boat lift and has a rear which is relatively close to the rear of the boat lift, - comprises an air inlet, and - comprises a water outlet; wherein the front chamber and the rear chamber for bringing the boat lift from the second state to the first state can be supplied via the air inlets with air during a first phase and a subsequent second phase; wherein the primary floating body comprising the anterior chamber is provided at the anterior chamber with a means for limiting the outflow of water during the second phase of filling with air.
    The boat lift according to the invention is suitable for a given embodiment for a greater variation in length of the boats to be carried above the water, since the center of gravity of each boat can be sailed near the location of the central upward point. This is in contrast to boat lifts where the front must be sailed against the front support arm. Boats with a large variation in length can thus be safely and stably lifted out of the water and brought back into the water. The angle of inclination can hereby remain limited.
    In the present application, the term "carrying a boat at least partially above the water" means that the boat, when worn, is higher above the water level than when the boat itself floats on the water. The boat is preferably carried so high that the bottom of the boat as a whole is no longer in contact with the water in which the boat lift is located. The air inlet of a room will be higher in the second state of the boat lift than its water outlet. The air inlet will be at the top of the room and the water outlet at the bottom of the room. In general, the air inlet of a chamber will be between the front and the water outlet and the water outlet will be between the rear and the air inlet. The air inlets are preferably located at the front of the relevant room. The water outlet of the rear chambers is preferably at the rear of the boat lift.
    The at least two support areas support the boat, with the center of gravity of the boat being lifted from between the two support areas.
    Secondary floats may be formed integrally with the primary floats and may or may not be in open communication therewith, i.e. air exchange between the lumen of the secondary floats and the primary floats is possible.
    A favorable embodiment is characterized in that the boat lift is arranged for preferentially supplying air to the front chamber in the first phase.
    As a result, the front of the boat lift is the first to rise when the boat lift is moved from the second state to the first state. The difference in height between the air inlet opening of the first chamber and the air inlet opening of the second chamber makes that through the hydrostatic pressure, air flows more easily into the front chamber than into the rear chamber. Thus, this does not have to be done through active control of the air supply to the rooms, which saves costs. The preferential supply of air to the front chamber in comparison with the rear chamber can be achieved, for example, when the boat lift at the rear half is of relatively heavy design compared to the proposed half. Instead or additionally, this can also be achieved, for example, with an air supply duct, for example a hose, in which there are inclined, flexible bristles with an axial component. When the air flows against the bristles, they are further set up and the flow of air is made more difficult. When (when discharging air from the rear chamber for the sinking of the primary floats) air flows in the other direction, the flow resistance is lower and air can flow out of the rear chamber more easily.
    A favorable embodiment is characterized in that the means for limiting the outflow of water from the chamber is in the form of a drain with a distal drain opening, which distal drain opening is located below the water drain opening of the posterior chamber in the sunken second condition.
    The discharge channel can, for example, be in the form of a pipe. The discharge channel has a length of at least 10 cm, such as at least 20 cm and more preferably at least 30 cm. The length is, for example, a maximum of 50 cm so that, if desired, the flow resistance for water in the first phase does not increase unnecessarily. Incidentally, that does not work with a tapered drain. As soon as the front room is so full of air that the drain is reached, the air will enter the drain. As a result, the hydrostatic back pressure increases considerably. This ensures that, in the second phase, air flows preferentially to the posterior chamber, thereby increasing the upward force there. Preferred supply of air to the front chamber can be achieved by narrowing the air supply to the rear chamber, a smaller air inlet opening, etc.
    A favorable embodiment is characterized in that the discharge channel is formed from flexible material.
    Such a discharge channel has a smaller chance of being damaged, for example in the event of a drought, the boat lift becomes dry. If the discharge channel is in the form of a pipe, it is, for example, a hose. For example, if the density of the hose is insufficient to allow it to point downwards, the end may be weighted.
    A favorable embodiment is characterized in that the drain channel has a distal drain channel opening that is larger than the water drain opening of the chamber.
    It is thought that this, with a downwardly directed discharge channel opening, promotes the speed of sinking of the primary floats. The water outlet of the rear chamber can also have such a drain, in which case the boat lift is designed such that the outlet opening of the drain of the front chamber is in the sunken second state below the outlet opening of the drain of the rear chamber. are located.
    A favorable embodiment is characterized in that the front chamber on its bottom is provided with a filling body with a density of less than 1 kg / l as the means for limiting the outflow of water during the second phase of filling with air.
    As soon as the air enters the filling body when the chamber is filled with air, further filling of the anterior chamber leads to a reduced outflow of water and thus to a reduced increase in the buoyancy.
    A favorable embodiment is characterized in that the air inlets of the front chamber and the rear chamber of the respective floating section are pneumatically connected to each other for simultaneously filling the front chamber and the rear chamber of the relevant floating section with air.
    This can easily be achieved when the air inlets are fed via a joint air supply line.
    A favorable embodiment is characterized in that for a floating section the air inlets of the front chamber and the rear chamber are connected to each other via the secondary section of the floating section.
    The secondary section can be used here as a duct for air, or for accommodating a duct. This saves costs and / or protects the transit channel.
    A favorable embodiment is characterized in that all air inlets of the primary section of the boat lift are pneumatically connected to each other.
    This makes it possible to provide the boat lift with air through a single air inlet for lifting the boat. Individual active control of the airflows to chambers and / or to floating bodies is thus effectively avoided. This increases the reliability of the elevator process and reduces costs.
    The present invention will now be explained with reference to the drawing, in which
    FIG. 1A and FIG. 1B show a boat lift according to the invention in respectively a perspective view and a front view;
    FIG. 2A and FIG. 2B schematically primary floating bodies of the boat lift of FIG. 1 in top view and side view, respectively;
    FIG. 3A to FIG. 3D schematically shows the elevation of a boat lift floating in the water in side view;
    FIG. 4 shows a schematic side view of an alternative embodiment of the boat lift; and
    FIG. 5A and FIG. 5B show cross-sections through an alternative primary float.
    FIG. 1A and FIG. 1B show a boat lift 100 according to the invention in respectively a perspective view and a front view. The boat lift 100 has a front side 101 and a rear side 102. The boat lift comprises a port driving section 105 'and a starboard driving section 105 ".
    The port driving section 105 'comprises a primary floating body 110' and a secondary floating body 120 '. Similarly, the starboard driving section 105 includes "includes a primary floating body 110" and a secondary floating body 120 ".
    The primary floating bodies 110 ', 110 "form a primary section which is submersible. The secondary floating bodies 120', 120" form a secondary section which prevent the boat lift 100 from sinking completely when the primary section is in a sunken state.
    The secondary floating bodies 120 ', 120 "are connected via uprights 130 to the primary floating bodies 110', 110". The uprights 130 can be adjustable in height, whereby, for example, the depth at which the primary floating bodies 110 ', 110 "are situated in the sunk state can be adjusted. For a boat with a small draft the length of the uprights 130 can be chosen shorter, whereby the process of sinking and lifting can be faster.
    The primary floats 110 ', 110 "are connected to each other via connecting elements 140, here connecting arms 140. In the illustrated embodiment, the connecting arms 140 provide two support areas 141 on which a boat 199 can be supported. For adapting to the hull of the boat 199 of the support areas 141, the two support areas 141 each comprise two height-adjustable support pads 142, for example in the form of rubber blocks (300 x 100 x 35 mm).
    In the embodiment shown here, the primary floating bodies are 110 cylindrical tubes of HDPE with a diameter of 63 cm and a length of 6 meters. The secondary floating bodies are also cylindrical, with a diameter of 20 cm and a length of 6 meters. In general, a boat lift will preferably be at least as long as the boat to be carried and more preferably longer.
    The boat lift 100 can be provided on gangways as well as on port side with gangways 150, of which in FIG. IA only one is shown.
    The primary section of the boat lift 100 comprises an inlets for air and outlets for water, but this will be explained below with reference to other figures.
    FIG. 2A and FIG. 2B schematically show primary floating bodies 110 ', 110 "of the boat lift 100 of Fig. 1A in top view and side view, respectively.
    FIG. 2A shows that the primary floats have a baffle 210 ', 210 "and therefore comprise a front chamber 211', 211" and a rear chamber 212 ', 212 ", each having upper air inlets 213', 213" of top the front chambers 211 ', 211 "and rear air inlets 214', 214" of the rear chambers 212 ', 212 ". The primary floats also each include on the underside respectively front water outlets 215', 215" of the front chambers 211 ', 211 "and rear water outlets 216 ', 216" of the rear chambers 212', 212 ". The location of the bulkhead will be chosen such that for the boats to be carried with the boat lift, the center of gravity of the boats to be carried is situated above the rear chambers will be located.
    The front air inlets 213 ', 213 ", and rear air inlets 214', 214" are pneumatically connected to one another via lines 240 to a central supply line 241. This has a main inlet 242 for air which, when the primary floating bodies 110 'sink, 110 "also acts as a discharge for air from the chambers. The front water outlets 215 ', 215" and rear water outlets 216', 216 "then function as a water supply for admitting water into the front chambers 211 ', 211" and the rear chambers, respectively. 212 ", 212".
    To prevent air from leaving the chambers at an undesirable moment, and the boat lift 100 lowers, so that the boat comes to lie back in the water, a valve 243 is provided in the embodiment shown. An alternative possibility is for the water outlets to be provided with flexible or hinged discharge channels, for example hoses, the distal ends of which are hoisted above water after the boat lift 100 has been brought into a floating state. The height adjustment can be effected, for example, by choosing the length of a rope connecting the distal end to the secondary float.
    For filling with air, the boat lift 100 may comprise an air pump 299. In the embodiment shown here, however, the air pump 299 is on shore, which has the advantage that it can easily be used for more boat lifts, which is cost-saving.
    The air pump 299 is of a type that can move air at a high flow. The pressure supplied thereby will be at least 0.04 bar, but preferably for practical use between 0.1 and 1 bar, such as between 0.15 and 0.5 bar.
    A suitable air pump is, for example, a side-channel fan which supplies air at a flow rate of 2800 liters per minute, with a 180 millibar underpressure on the air supply side of the pump and approximately 0.20 bar on its bladder side. A cheaper but noisy option is a vacuum cleaner, such as a Nilfisk multi 20, which can blow 4000 liters per minute (with 0.25 bar overpressure).
    In FIG. 2B, it can be seen that the front water outlets 215 of the front chambers 211 are connected to a drain 220 with a distal drain opening 221. The function thereof will be explained hereinafter.
    It is preferable that the conduits 240 and the supply conduit 241 are adapted to feed air at a high flow rate. They have, for example, an internal diameter of at least 40 mm. In the embodiment discussed here, the water outlets had a diameter of 50 mm.
    FIG. 3A to FIG. 3D schematically show the lifting of a boat lift 100 floating in the water.
    FIG. 3D shows the boat lift 100 in a relatively high, first state in which a boat (not shown) is lifted above the water 399. FIG. 3A shows the boat lift 100 in a relatively low, submerged second state where the boat lift 100 is held floating and in a defined position by the secondary floats 120. In this second state, the support areas 141 (Fig. 1A) are below the water surface and a boat can be sailed between the floating sections above the support areas 141.
    By the way: The present invention makes it possible to place two boat lifts in the longitudinal direction one behind the other and to have a boat sail over a first boat lift to the second boat lift. This is possible because both support areas can be under water. This can be practical in a busy port, so that boats can be kept above water in more than 1 row.
    In an open state of the valve 243, air is supplied to the supply line 241 with air pump 299, which air enters via the lines 240 into the chambers of the primary floats 110. This increases the floating power of the boat lift 100 and increases it (Fig. 3B). For a good understanding of the principle, these parts have been omitted from the schematic side views.
    For example, because the boat lift 100 is relatively heavy on the rear 102, the front 101 will rise rather sooner. This leads to a further advantage of the supply of air to the front chambers 211 since the front and rear air inlets are in communication with each other. The air pressure of the pump is, however, chosen to be such that at the same time as the front chambers 211, the rear chambers 212 are supplied with air.
    As a result, the front support area will first come against the hull of the boat 199 and begin to lift it. The force exerted by the boat causes the rear chambers 212 to be filled again somewhat more easily and the rear support area comes into contact with the rear hull part of the boat 199.
    The supply of air is continued, as a result of which the boat 199 is lifted, wherein because the rear side of a boat 199 is heavier than the front side, the boat 199 with the front side is lifted highest out of the water. This is the intention, so that in the event of a calamity the boat first enters the water with the (non-streamlined) rear and is immediately decelerated.
    With further air supply, a second phase of air supply is achieved as soon as air enters the discharge channels 220 (Fig. 3C). Because the distal discharge openings 221 thereof are lower than the rear water outlets 216 (or more precisely: than the water level in the rear chambers 212), more of the air supplied via the central supply line 241 will be led to the rear chambers 212, so that these now increase in upward strength. As soon as air escapes from the rear chambers 212, the second phase of the elevator process is complete. The valve 243 will be closed, after which the air pump 299 can be disconnected. It is of course also possible to stop earlier, as soon as the boat 199 has fully or partially risen above the water level.
    With the boat lift 100 according to the invention a complex movement of the boat lift can be carried out without actively controlling the amount of air to individual channels. The air pump 299 can have 1 switch for switching on and off the air supply, and the user does not have to do anything else to lift the boat.
    By choosing the distance from the discharge channels 220 to the partitions 210 larger or smaller, the moment at which the second phase of the supply of air begins can be adjusted. Closer to the front 101 means that the second phase starts earlier. The front water outlets 215 can be located at the very front of the boat lift. The rear water outlets 216 will in principle preferably be at the rear of the boat lift.
    The length of the discharge channel 220 (or more precisely: the relative vertical distance to the rear water outlets) determines the extent to which air is preferably directed to the rear chambers 212. In the case of FIG. In the embodiment discussed in Fig. 1, the discharge channels 220 had a length of 30 cm.
    With a boat lift according to the invention, in general and preferably a secondary floating body or at least a part thereof will extend above a rear chamber. The secondary floating body preferably extends over the full length of the primary floating body. This contributes to the boat lift being lowered into the water in a controlled manner.
    FIG. 4 shows a schematic side view of an alternative boat lift 100. With this boat lift 100, the secondary floating body 120 is used to connect the front air inlet 213 and rear air inlet 214, which saves on material costs.
    In the embodiment shown, the uprights 130 are also used for the passage of air. To maintain adjustability of the uprights 130 in a simple manner, the air can also be supplied to the chambers by means of hoses instead of the uprights.
    The secondary floating bodies of the starboard section and the port section can be connected to each other via a joint connecting channel 470. The connecting channel 470 can also act as a barrier for placing a boat, with the front having to act as the barrier. Of course, a barrier can also be provided that is not an air connection channel.
    For faster filling of the rear chamber 212 "when the boat lift is lowered again, in the embodiment shown here, the rear water outlet 216" is provided with a tapered drain channel 420. The distal drain channel opening 421 of this is larger than the opening of the boat lift. rear water outlet 216 ". The front drain can be designed like this.
    FIG. 5A shows a cross-section through the anterior chamber of an alternative primary float body 110. It has a filler body 575 on its bottom that has a density of less than 1 allowing it to provide an upward force. The second phase is reached when the water level in the anterior chamber 211 reaches the filling body 575. At that time, the buoyancy supplied by the front room will no longer increase rapidly and relatively more air will go to the rear room.
    The filling body 575 will allow all or almost all of the water to leave the front chamber 211 via the front water outlet 215.
    The rear chamber can have a corresponding filling body 576, but then at the top of the rear chamber 212. Thus, the upward effect of the filling bodies in the two chambers can be kept the same. The difference is that when filling with air, the hydrostatic pressure in the rear chamber 212 immediately increases and the air therefore preferentially goes to the front chamber 211. As soon as the air in the anterior chamber reaches the filling body 575, the reverse occurs and the posterior chamber 212 is favored.
    In the present application, in connection with the term water outlet, the term "limiting the outflow of water" also means limiting the outflow of air if the water has already left the chamber via the water outlet.
    With a boat lift according to the invention, the number of chambers of a primary floating body can also be more than two. The bulkheads can for instance be provided by means of mirror welding.
    权利要求:
    Claims (9)
    [1]
    CONCLUSIONS
    A boat lift (100) for carrying a boat (199) at least partially above water (399), said boat lift (100) having a front (101) and a rear (102) and - a starboard driving section (105 ") and comprises a port-driving section (105 ') for accommodating a boat (199) therebetween, the starboard-driving section (105 ") and the port-driving section (105') being connected to each other by at least one connecting element (140), - two longitudinally the boat lift (100) comprises spaced-apart support areas (141) for supporting the boat (199) thereon in a relatively high, first state of the boat lift (100), - a primary section comprising sinkable primary floats (110) ), wherein each of the starboard float section (105 ") and the port float section (105 ') comprises at least one sinkable primary float (110) located between the front (101) and the rear (102), which sinkable primary float (110) a ka for sinking mer with an air inlet and a water outlet; and - comprises a secondary section connected to the primary section for floating the boat lift (100) on the water (399) with the secondary section on the water (399) in a relatively low, sunk second floating body (110) wherein at least one of the support areas (141) is submerged in water (399), each of the starboard driving section (105 ") and the port driving section (105 ') being a secondary located between the front (101) and the rear (102) drive body (120), characterized in that for each of the starboard drive section (105 ") and the port drive section (105 ') at least one primary drive body (110) has at least one front chamber (211) and a rear chamber (212) wherein each chamber - has a front side that is relatively close to the front side (101) of the boat lift (100) and has a rear side that is relatively close to the rear side (102) of the boat lift (100), - comprises an air inlet, and - comprises a water outlet; wherein the front chamber (211) and the rear chamber (212) for bringing the boat lift (100) from the second state to the first state can be supplied with air during the first phase and a subsequent second phase via the air inlets; wherein the primary floating body (110) comprising the anterior chamber (211) is provided at the anterior chamber (211) with a means (220, 575) for limiting the outflow of water (399) during the second phase of filling with air.
    [2]
    The boat lift (100) according to claim 1, wherein the boat lift (100) is arranged for preferentially supplying air to the front chamber (211) in the first phase.
    [3]
    The boat lift (100) according to claim 1 or 2, wherein the means for limiting the outflow of water (399) from the chamber is in the form of a drain (220) with a distal drain opening (221), said distal drain opening (221) 221) is in the sunken second state below the water discharge opening of the rear chamber (212).
    [4]
    The boat lift (100) according to claim 3, wherein the discharge channel (220) is formed from flexible material.
    [5]
    The boat lift (100) according to any of claims 3 or 4, wherein the drain channel (220) has a distal drain channel opening (221) that is larger than the water drain opening of the chamber.
    [6]
    A boat lift (100) according to any one of the preceding claims, wherein the front chamber (211) is provided on its bottom with a filling body (575) with a density of less than 1 kg / l as the outflow limiting device of water (399) during the second phase of filling with air.
    [7]
    A boat lift (100) according to any one of the preceding claims, wherein the air inlets of the front chamber (211) and the rear chamber (212) of the respective floating section are pneumatically connected to each other for simultaneously filling the front chamber with air ( 211) and the rear chamber (212) of the respective three-section section.
    [8]
    The boat lift (100) of claim 7, wherein for a float section, the air inlets of the front chamber (211) and the rear chamber (212) are connected to each other via the secondary section of the float section.
    [9]
    The boat lift (100) according to any one of the preceding claims, wherein all air inlets of the primary section of the boat lift (100) are pneumatically connected to each other.
    类似技术:
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    US661246A|1900-11-06|Boat.
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    同族专利:
    公开号 | 公开日
    BE1023451A1|2017-03-23|
    NL2013214B1|2016-08-11|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4018179A|1975-11-28|1977-04-19|National Hydro-Hoist Company|Pontoon system for supporting watercraft on a body of water|
    US5394814A|1993-04-05|1995-03-07|Hydrohoist International, Inc.|Front mounted boat lift|
    JPH08216981A|1994-12-15|1996-08-27|Nobutaka Miura|Floating building berth|
    WO2010058156A2|2008-11-18|2010-05-27|Welcome Inn Investments N.V.|Floatable dry docks|
    AU2012201899A1|2011-03-30|2012-10-18|Grant Mcrobbie|Boat Lifting Apparatus and Method|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    NL2013214|2014-07-18|
    NL2013214A|NL2013214B1|2014-07-18|2014-07-18|Boat lift.|
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