Descent and lifting of the boat to the shore is always a physical activity that can spoil the mood even before the start of fishing or rest. Electric winch for lifting a boat It's the perfect solution for owners of berths, garage cooperatives by the water and suburban areas with a steep descent, and the mechanization of the process saves time and effort, making the operation of a boat or boat comfortable even for one person.
In this article we will analyze in detail the technical nuances of equipment selection, calculate the required power and consider the features of installation. Traction specifications And safety and safety are the two pillars on which a good descent is based, and ignoring the rules can not only cause expensive equipment to break down, but also damage the hull.
Principle of operation and types of winches for water technology
The main purpose of the device is to convert the motor's torque into the translational motion of the cable. winch It should be highly resistant to corrosion, because it is inevitable to come into contact with salt or fresh water, and they are structurally divided into drum and drumless models, each with its own advantages in specific operating conditions.
Drum models wind the cable onto the drum, which ensures a uniform distribution of the load, but requires more space to install. Drumless winches It is more compact and lightweight, but when working with long cables may require an additional guide. The choice of type of drive also affects the functionality: there are devices with self-braking and models that require constant holding of the control button.
- 🔋 Power tensionMost models run from 12V or 24V, which allows them to be connected to a boat battery or stationary source.
- ⚙️ Type of gearbox: worm gearboxes provide self-braking, and planetary gearboxes are characterized by high winding speed.
- 🛡️ Protection class: a critically important standard for the water environment
IP67or higher, which guarantees protection against immersion.
⚠️ Attention: Never use open-body winches near water, and getting moisture on the engine winding will cause short-circuit and instantaneous equipment failure.
Why is a worm gearbox better for a boat?
The worm gearbox has the property of self-braking, which means that when the voltage stops, the load (boat) will not spontaneously descend. In planetary gearboxes, a separate braking mechanism is required to lock in, which wears out over time. For the safety of a boat on a steep slope, worm gear is the priority choice.
Calculation of traction force and power selection
The most important thing that should not be ignored when buying is loading capacityMany beginners mistakenly believe that it is enough to know the weight of the boat, but the real load is much higher due to the angle of descent and friction. To correctly select, you need to consider not only the weight of the vessel with the engine and equipment, but also the steepness of the ramp.
The formula is simple, but it requires precision in data entry. If the slope angle is 15 degrees, the force is about 26% of the total weight. However, if the angle is increased to 30 degrees, the load on the winch will increase to 50%, which is why the power reserve should be at least 30-40% of the calculated value.
Below is a table that helps to orient in the choice of model depending on the type of boat and descent conditions:
| Type of boat | Full weight (kg) | Descent angle | Recommended traction (kg) |
|---|---|---|---|
| Inflatable PVC | 300-500 | 10-15° | 600-800 |
| aluminum | 500-800 | 15-20° | 1000-1350 |
| Boat (glass-plastic) | 1000-1500 | 10-12° | 1500-2000 |
| heavy boat | 2000+ | 5-10° | 2500+ |
When you choose, pay attention to the speed of lifting. High speed is convenient, but requires a more powerful power source and a thick cable. Low-speed models Often more reliable and create less stress on the battery.
Coils and ropes: steel or synthetic?
The choice of traction element directly affects the safety and durability of the entire system. Steel cable It's traditionally considered more durable and resistant to abrasion on rocks or concrete, but it has the property of rusting and can injure the hands when cliffed or non-returned. Synthetic analogues are devoid of these drawbacks, but require careful treatment of ultraviolet light.
The synthetic cable made of high molecular weight polyethylene (Dyneema) has a high tensile strength and does not absorb water. It does not rust, is lighter than the steel analogue, and most importantly, does not pose such a danger when it breaks, because it does not have the inertia of the bounced metal lash. synthetics are afraid of friction on the sharp edges of concrete or shellTherefore, it requires the installation of additional rollers-blowers.
The standard length of 15-20 meters is suitable for most stationary berths. If you plan to use a winch to pull a boat far ashore, consider models with a cable length of up to 30 meters.
- 🔩 Steel: high wear resistance, low price, risk of corrosion, heavy weight.
- 🧶 Synthetics: light weight, safety, buoyancy (not drowning), high price, fear of abrasives.
- 🔗 Hook.: a safety latch must be present to prevent the sliding of the frock.
⚠️ Attention: Check the condition of the cable regularly, if more than 10% of the broken wires appear on the steel rope at one step of the roll, it should be replaced immediately.
Connection schemes and catering
Correct connection winch The current consumed during the start and lift of heavy loads can reach 200-300 Amps, so the use of regular wiring of the car or thin wires is unacceptable.
It uses a remote control with the Up and Down buttons, and it is important that the remote control has a sufficient length of cable for comfortable control from the shore while the boat is in the water, and some models provide wireless control, which greatly improves the usability.
Connection diagram:[Battery 12B] -- -- -- -- [Fuse 300A] -- -- -- -- -- [Contactor/Relay] -- -- -- -- [Swan]
|
[Control remote]
When installing, use copper wires with a cross section of at least 25 mm2 (for low power) and up to 50 mm2 for high-power models. All connections should be securely insulated and protected from water. Tight terminals And shrinkage is mandatory.
☑️ Electrical checks
Rules of safe operation
Safety when working with lifting mechanisms is in the first place. Electric winch It's not a toy, and disregarding the rules can lead to serious injuries. Always be within sight of the boat, but don't stand on the line of tension of the cable. In the event of a cliff, the cable or the boat can bounce with great force.
Before starting the climb, make sure the boat is properly mounted on the runners or trolley and the cable is attached to the bow bolt. The outboard motor must be raised so that the screw does not damage the ground. The movement must be smooth, without jerks that can overload the gearbox.
Avoid cross-talking of the coils on the drum. If this happens, immediately stop the process and straighten the rope manually, wearing protective gloves. idling (without load) is also not recommended, as this can lead to uneven tension of the layers on the drum.
- 👀 Visual control: Always monitor the winding process and the position of the boat.
- 🚫 Prohibition of overloadingDo not try to pull weights that exceed face value, even for a short time.
- 🧤 Hand protectionNever touch a moving cable or drum.
Lubricate the cable with a special silicone lubricant once a season, which will prolong the life of both the cable itself and the laying mechanism, especially during the winter storage period.
Maintenance and winter storage
An aggressive aquatic environment does not forgive maintenance errors, and after each season, and ideally after each trip to the salt water, the mechanism should be washed with fresh water. Conservation For winter, it includes complete cleaning, lubrication of moving parts and storage in a dry room.
Pay special attention to the gearbox. In worm gearboxes, the oil loses its properties over time and becomes saturated with metal shavings. It is recommended to change the lubricant once every 1-2 years of active use. For bearings, use lithium lubricants that are resistant to washing out with water.
If the winch remains outside in winter, cover it with a protective case so that ultraviolet light does not destroy the plastic elements of the remote and body. Regular examination It will help to identify minor defects before they cause a breakdown.
Regular maintenance and proper preservation increase the life of the winch by 2-3 times, saving money for repair or replacement of expensive node.
Can I use a car winch for a boat?
Technically, it is possible if it is protected from moisture (IP67) and has a suitable traction. However, car winches often do not have self-braking and require constant holding of the button, which is inconvenient when launching a boat.
Which battery to choose for a winch?
Deep discharge traction batteries (GEL or AGM) are best suited. Car starter batteries are not designed for long-term current return and can quickly fail during frequent charge-discharge cycles.
What to do if the electricity is lost at the pier?
Have a spare mobile battery or allow the winch to be connected to the boat's battery via an adapter, some winch models allow manual unwinding of the cable in emergency mode.
Should I lubricate the winch cable?
Yes, but only with special cables, and the normal engine oil will pick up the sand and dirt, turning into an abrasive paste that will accelerate the wear of the cable and drum.