RU196926U1 - SCREW SOIL ANCHOR WITH RIGID FIXING ELEMENT - Google Patents

Abstract

A utility model of a ground anchor with an element of rigid fixation of a ship's transom refers to the equipment of water vehicles and is designed to prevent theft of small boats. The technical result is to reduce the risk of unauthorized removal of the anchor device from the ground, as well as increase the reliability of the connection between the anchor device and the guarded small boat. The result is achieved by the fact that the soil anchor device contains a conical tip with a helical blade in the lower part of the anchor barrel, and longitudinal slots in the upper part providing vertical displacement of the locking rod, the horizontal position of which is provided by passing it through the hole of the inner cylinder moving inside the anchor barrel. This design facilitates the combination of the locking rod with the hole in the transom of the boat. A rod threaded through it is locked on the cockpit side with a key and forms a rigid connection of the vessel with an anchor screwed into the ground.

Description

The utility model relates to the equipment of water vehicles and is intended to prevent the theft of small boats (boats and boats) from unequipped places (open shore of any reservoir).

A screw anchor is known from the prior art, comprising a barrel with a tapered tip, equipped with a tapered screw blade with an angle of elevation less than the angle of friction of the surface of the blade against soil with a bearing coil of constant diameter (RF patent No. 2470116, IPC E02D 5/80, publ. 20.12.2012) .

As the closest analogue of the claimed solution, a ground anchor device with protection against unauthorized access is known, containing a hollow cylindrical barrel closed at the upper end with a lid with a hole in the central part and having a through hole in the upper part for screwing the anchor device into the ground, in the lower part of the anchor device a conical tip and a helical blade are made, while an eye bolt is fixed in said barrel cover with the possibility of free rotation around its axis, and the specified the delivery hole is blocked by a protective element made in the form of a glass covering the upper end of the barrel of the anchor device and having an elongated hole on the closed end (patent RU 173023 U1, IPC E02D 5/80, published 07.08.2017).

The disadvantage of the above solution is the obligatory presence of an intermediate link connecting the soil anchor with the protected object, which is usually a cable or chain. With the modern development of portable hydraulic and cordless cutting tools for biting steel bars with a diameter of up to 18 mm, the chains used with a link thickness of 6-10 mm and cables do not pose a serious obstacle to the theft of boats and motors. In addition, the hole blocked by the protective glass for screwing the anchor into the ground is not an insurmountable obstacle to unscrew it; just grab the anchor barrel below the protective glass with a gas wrench and you can freely unscrew it from the ground. A flexible chain does not interfere with such actions. A padlock with an alarm securing the chain to the anchor does not save the situation, since the movable chain links do not transfer force from the hydraulic shears to the ground anchor when biting the chain, and the sound emitter of the castle is easily deactivated by mounting foam or by immersing the castle into a container of water.

The objective of the claimed technical solution is to eliminate the shortcomings of the existing analogue by creating a ground anchor device with a rigid connection to the boat transom, which prevents unauthorized removal of the anchor device from the ground and makes it impossible to bite or otherwise mechanical impact on the element connecting the ground anchor to the object of protection.

The technical result is to reduce the risk of unauthorized removal of the anchor device from the ground, as well as to increase the reliability of communication between the anchor and the associated object of protection, and, as a result, to reduce the risk of theft of a small vessel.

The most convenient place for a rigid bundle of soil anchor and a small vessel of any type is a transom, and with respect to PVC boats this is the only rigid element in the structure. In addition, for all modern boats and launches, a plug-closed valve for draining water from the cockpit is located in the transom, which is well suited for passing the locking rod connecting the transom to the anchor device through the transom. 2. Due to the fact that soils on the banks of water bodies can vary greatly in composition and density, the soil anchor can twist into the soil at different depths, and since we are faced with the task of rigidly connecting two elements: a transom drain valve and an anchor hole threaded through them with a steel rod, in the anchor it is necessary to provide for the possibility of a vertical shift of the locking rod to guarantee its combination with the drain valve hole, regardless of the depth of immersion of the anchor in the ground.

The indicated technical result and the task are achieved in that the soil anchor device of FIG. 1 contains a hollow cylindrical barrel 1 having a conical shaped injection tip 2 in the lower part of the barrel with a helical blade with a diameter of 80-90 mm and a thickness of 2 mm in the form of a spiral for screwing the anchor device into the ground, and in the upper part there are two diametrically located longitudinal slots 3 of length 120 mm and a width of 16.5 mm to move the locking rod 10 in the vertical direction, necessary for the convenience of combining it with the hole in the transom. The optimal distance from the upper edge of the barrel 1 of the anchor device to the upper edge of these slots 3 is 35-40 mm.

The barrel 1 of the anchor device can be made of galvanized steel pipe with a diameter of 57 mm with a wall thickness of 3 mm, while the preferred length of the barrel of the anchor device is 500-600 mm.

Below the slots 3 of the barrel of the anchor device there is a through hole 4 perpendicular to it with a diameter of 17 mm, designed to connect the anchor device with a device for screwing and removing the anchor device - with a winder 5, which is a hollow steel cylinder with an outer diameter 1 mm smaller than the inner diameter of the anchor barrel, with a through hole 7 in its lower part and a through hole 8 in its upper part. The gate is inserted into the barrel of the anchor to the stop 6 (rivet), designed to facilitate positioning and alignment of the holes. A handle for rotation 9 is threaded through the upper hole 8 of the handle, and a locking rod 10 is inserted through the lower hole 7, combined with the through hole 4 of the anchor barrel, to fix the handle to the anchor. FIG. 1a.

The locking rod has several purposes:

- fixes the handle with the anchor in the process of twisting the anchor into the ground;

- rigidly connects the motor vessel to the soil anchor, while the rod itself is almost inaccessible to mechanical impact, as it is almost completely hidden in the anchor barrel, transom wall and lock case;

- does not allow to unscrew or loosen the soil anchor due to the tight connection with the transom;

- creates additional resistance to the forceful extraction of the anchor from the ground, since the boat’s weight transmitted from the boat with the motor mounted on it is added to the usual soil resistance (from 50 to 300 kg, depending on the mass of the boat and motor).

The locking rod is made of stainless steel with a diameter of 16 mm with a mushroom-shaped extension at one end and an annular groove for the locking mechanism of the lock on the other side. The mass of the rod is about 200 g, while it performs the same function as a three-meter chain with a link diameter of 10 mm weighing more than 11 kg.

The anchor is installed vertically next to the boat transom opposite the drain valve and is screwed into the ground with the help of a winder to the level of hole 4, after which the locking rod is removed from the holes and the lever is removed to the side.

Instead of a winch, a freely moving hollow inner cylinder 11 is inserted into the anchor barrel.

The inner cylinder 11 is removable and has an outer diameter 1 mm smaller than the inner diameter of the barrel of the anchor device, it also has a through hole 12 in the middle of its length for horizontal positioning of the locking rod. It can be made of galvanized steel pipe 2-3 mm thick, to which a blind cover is welded on top. The length of the inner cylinder is 320 mm.

Restriction on the movement of the inner cylinder deep into the anchor barrel is the stop 6. The stop is installed in the wall of the anchor so that the inner cylinder maximally lowered into the anchor barrel rises by its upper edge 10-15 mm above the upper edge of the anchor barrel, and the lower edge of its through hole 12 coincided with the lower edges of the longitudinal slots 3 of the anchor barrel. The protrusion of the inner cylinder above the upper edge of the anchor is necessary for its rotation around the longitudinal axis to align the through hole of the inner cylinder with the slots of the barrel. After alignment, a locking rod 10 is horizontally threaded through them, which can be parallel moved in a vertical plane by a distance of the length of the slots of FIG. 1b, which will make it easy to combine it with the drain valve hole in the transom of the boat. After threading the locking rod through the hole of the drain valve, a lock is put on it, which is closed with a key. The distance between the screwed anchor and the transom does not exceed 5-8 mm, which eliminates the use of a hydraulic or cordless cutting tool. It is impossible to unscrew or loosen the anchor, since it is rigidly connected to the transom of the boat.

The interchangeable injection tips used in the anchor device are easily replaced depending on the type of soil. On sandy and sandy loamy soils, it is better to use a tip of the “blade” type 2a; on loams and clay soils, a “screw” tip 2b is better. The molding tips are attached to the anchor by means of furniture connecting bolts 13.

Installation and bringing the declared anchor device into working condition includes the following sequence of actions:

1) Install a vertical anchor opposite the hole in the transom of the vessel at a distance of 100 mm from the transom.

2) Insert the knob all the way and, aligning the through holes of the knob and the anchor barrel, fix them with a locking rod, insert the handle.

3) Screw the anchor into the ground, as far as possible to the level of the locking rod, aligning the slots in the anchor barrel with the drain valve hole in the transom.

4) Remove the locking rod, remove the hatch and slide the boat transom close to the anchor.

5) Insert the inner cylinder into the barrel of the anchor to the stop, and, grabbing it by the upper protruding part, turn until the through hole coincides with the slots of the anchor to install the locking rod.

6) Insert the locking rod into the formed lumen and, lifting it to the level of the drain valve hole in the transom, push the rod into it until the mushroom head stops in the anchor barrel.

7) From the cockpit side, put a lock on the locking rod and lock it with a key.

Dismantling the soil anchor device is carried out in the reverse order.

Claims (7)

1. A ground anchor device with a rigid connection protected from unauthorized access with a small boat, containing a hollow cylindrical barrel having a conical tip with a helical blade in the lower part, characterized in that it has longitudinal, diametrically located slots in the upper part of the barrel for the convenience of matching the openings in the transom of the vessel with a locking rod, regardless of the immersion depth of the anchor device in the ground, the horizontal direction of the locking rod provides a through hole in internal hollow cylinder, freely moving in the barrel of the anchor device within the length of the slots, below which there is a through hole for connecting the anchor with a device for screwing the anchor device into the ground. 2. The device according to p. 1, characterized in that due to the longitudinal slots in the anchor barrel and the inner cylinder with a through hole, the locking rod is easily aligned with the hole in the transom of the vessel, regardless of the depth of screwing of the anchor device into the ground. 3. The device according to p. 1, characterized in that the locking rod is hidden in the inner space of the barrel of the anchor, transom and lock, which greatly complicates the possibility of its mechanical destruction. 4. The device according to p. 1, characterized in that the rigid connection of the transom of the vessel with the anchor device through the locking rod does not allow it to loosen or unscrew from the ground. 5. The device according to p. 1, characterized in that the weight of the vessel and the outboard motor installed on the transom, transmitted through the locking rod to the anchor device, significantly increases the effort required for unauthorized removal of it from the ground. 6. The device according to claim 1, characterized in that as a result of using a short and light locking rod instead of a chain to connect the soil anchor to a small vessel, the total weight of the anti-theft system is almost halved. 7. The device according to p. 1, characterized in that as a result of the use of replaceable cast tips provides easy screwing and reliable fixation in soils of different compositions and densities.

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