KR-20260063790-A - Trim and brake system for airboats

KR20260063790AKR 20260063790 AKR20260063790 AKR 20260063790AKR-20260063790-A

Abstract

The present invention relates to a trim and brake system for an airboat that enables trim control and braking functions according to the operating conditions of the airboat by means of moving an operating plate equipped with a trim adjustment member and a brake pin in multiple stages up and down by means of a multi-stage cylinder at the rear of the hull of the airboat. That is, the present invention is characterized by a trim and brake system for an airboat comprising a pair of upper brackets mounted on both sides of the hull of an airboat (A), a cylinder rotatably installed on the upper brackets, a hinge mounted on the lower part of the hull of the airboat below the upper brackets, an operating plate installed so as to be able to move up and down with its outer end connected to the piston rod of the cylinder and its inner end connected to the hinge, and a trim adjustment member and a brake pin installed to protrude from the lower part of the outer end.

Inventors

김정열
오운기
김영환
정종석

Assignees

㈜은성중공업

Dates

Publication Date: 20260507
Application Date: 20241031

Claims (5)

A pair of upper brackets (10) mounted on both sides of the rear of the hull of the airboat (A), and A cylinder (20) rotatably installed on the upper bracket (10), and A hinge (30) mounted on the lower part of the upper bracket (10) above, at the bottom of the hull of the airboat (A), and An operating plate (40) installed so as to be able to move up and down, with the outer end connected to the piston rod (25) of the above cylinder (20) and the inner end connected to the hinge (30). A trim and brake system for an airboat characterized by being composed of a trim adjustment member (50) and a brake pin (60) installed to protrude from the lower part of the outer end.
In Article 1, The above cylinder (20) is provided as a multi-stage operating cylinder, and the piston rod (25) is extended in multiple stages to allow the operating plate (40) to move up and down in multiple stages, characterized by a trim and brake system for an airboat.
In Article 1, The trim adjustment member (50) is provided as a block that can be extended vertically, in a trim and brake system for an airboat.
In Article 1, A trim and brake system for an airboat, characterized in that a trim adjustment member (50) and a brake pin (60) are installed so as to protrude from the lower outer end of the above-mentioned operating plate (40), and the protruding upper and lower length (L1) of the trim adjustment member (50) protrudes longer than the protruding upper and lower length (L2) of the brake pin (60).
In Article 1, A trim and brake system for an airboat, characterized in that, depending on the operating conditions of the airboat (A), when the operating plate (40) moves up and down in 1 or 2 stages, trim control or a brake function is performed by the trim adjustment member (50) and the brake pin (60), and when the operating plate (40) moves up and down in 3 stages, trim control is performed by the operating plate (40).

Description

Trim and brake system for airboats The present invention relates to a trim and brake system for an airboat, and more specifically, to a trim and brake system for an airboat that enables trim control and brake functions according to the operating conditions of the airboat by means of moving an operating plate equipped with a trim adjustment member and a brake pin up and down in multiple stages by means of a multi-stage cylinder at the rear of the hull of the airboat. Generally, airboats generate thrust using aircraft propellers on the hull, rather than the underwater screws used on ships. In addition, since the hull is constructed to be flat, it can be operated not only in very shallow waters but also on wetlands, mudflats, ice, snow, and even on land roads. Thus, it is a specialized vessel that is widely used in the swamps of Florida in the United States and on frozen lakes and heavy snow regions in Russia. These airboats were commercialized by removing the underwater screw engines from existing small boats and equipping them with small airplane engines along with fixed-pitch or variable-pitch propellers. By utilizing the thrust generated by the airplane propellers, the airboats acquired the special capability of being amphibious. These airboats allow for trim adjustment of the longitudinal inclination of the hull during operation using trim tabs. In addition, since airboats perform braking by reducing thrust from air propellers, rapid braking is difficult during high-speed operation and braking precision is very low, making it difficult to control the hull; therefore, a brake system has been disclosed that takes this into account. However, conventional airboats not only lack a configuration capable of performing both trim and braking functions, but also lack the technology to perform trim control and braking functions suitable for different operating conditions, such as water surfaces, mudflats, wetlands, ice, and snow. FIG. 1 is a side view showing an airboat with a trim and brake system according to the present invention applied. FIG. 2 is a front view of the rear section showing an airboat with a trim and brake system according to the present invention applied. FIG. 3 is an enlarged perspective view showing a trim and brake system for an airboat according to the present invention. FIG. 4 is an enlarged view showing a trim and brake system for an airboat according to the present invention. FIG. 5 is a partially enlarged cross-sectional view showing a trim adjustment member and a brake pin installed to protrude from the lower part of an operating plate in a trim and brake system for an airboat according to the present invention. FIG. 6 is an exemplary diagram showing that in a trim and brake system for an airboat according to the present invention, the operating plate moves up and down in one step to enable trim control by the trim adjustment member. FIG. 7 is an exemplary diagram showing that in a trim and brake system for an airboat according to the present invention, the operating plate moves up and down in two stages and performs a braking function by means of a braking pin. FIG. 8 is an exemplary diagram showing that in a trim and brake system for an airboat according to the present invention, an operating plate on one side moves up and down in three stages, and trim control is achieved by the operating plate entering a water surface, mudflat, wetland, etc. FIG. 9 is an enlarged view showing part "A" of FIG. 8. FIG. 10 is an exemplary diagram showing that trim control is achieved by moving the operating plate up and down in three stages in a trim and brake system for an airboat according to the present invention. Preferred embodiments of the present invention are described in detail below. In describing the present invention, specific descriptions of related known functions or configurations are omitted if it is determined that such detailed descriptions may unnecessarily obscure the essence of the invention. The trim and brake system for an airboat according to the present invention comprises a pair of upper brackets (10) mounted on both sides of the rear of the hull of an airboat (A), a cylinder (20) rotatably installed on the upper brackets (10), a hinge (30) mounted on the lower part of the hull of the airboat (A) below the upper brackets (10), an operating plate (40) installed so as to be able to move up and down with its outer end connected to the piston rod (25) of the cylinder (20) and its inner end connected to the hinge (30), a trim adjustment member (50) installed to protrude from the lower part of the outer end, and a brake pin (60). The upper bracket (10) is mounted on the rear outer surface of the hull of the airboat (A) to allow the cylinder (20) to be rotatably installed using a pivot support pin (12), and the hinge (30) is mounted on the lower part of the upper bracket (10) to the rear outer surface of the hull of the airboat (A) to connect the inner end of the operating plate (40) t