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CN-117429593-B - Wing type paddle rack and racing boat

CN117429593BCN 117429593 BCN117429593 BCN 117429593BCN-117429593-B

Abstract

The invention discloses an airfoil type paddle frame and a racing boat, and belongs to the field of racing boats. An airfoil type paddle rack and a racing boat comprise a main paddle rack, wherein one end of the main paddle rack is provided with a connecting rack connected with paddles. The upper end face of the main paddle frame is an arc-shaped first arc-shaped surface, the lower end face of the main paddle frame is a first plane, and the cross section of the main paddle frame is an airfoil. When advancing, the air velocity of the first arcwall face surface is greater than the air velocity of the first plane surface, and then the pressure of main oar frame up end is less than the pressure of main oar frame lower terminal surface, and main oar frame receives ascending thrust. The pressure intensity of the upper surface and the lower surface of the main paddle frame is changed, so that the main paddle frame is subjected to upward thrust in the advancing process, the whole racing boat is further subjected to upward thrust, the advancing resistance of the racing boat is reduced, and better achievements are achieved for athletes.

Inventors

  • FANG WENYOU
  • FANG ZHICHENG
  • SHU ZHENGFANG
  • XU FENGFENG

Assignees

  • 杭州富阳方舟船艇有限公司

Dates

Publication Date
20260508
Application Date
20231109

Claims (8)

  1. 1. The wing type paddle rack is characterized by comprising a main paddle rack (2), wherein one end of the main paddle rack (2) is provided with a connecting rack (21) connected with paddles; The upper end face of the main paddle frame (2) is an arc-shaped first arc-shaped surface (201), and the lower end face of the main paddle frame is a first plane (202), and the cross section of the main paddle frame (2) is an airfoil; when the propeller runs, the air flow rate on the surface of the first arc-shaped surface (201) is larger than the air flow rate on the surface of the first plane (202), so that the pressure intensity of the upper end face of the propeller frame (2) is smaller than the pressure intensity of the lower end face of the propeller frame (2), and the propeller frame (2) is pushed upwards; The device also comprises an installation seat (4), wherein the main paddle frame (2) is rotationally connected to the installation seat (4), and an auxiliary paddle frame (3) is arranged between the main paddle frame (2) and the installation seat (4); in a use state, the main paddle frame (2), the auxiliary paddle frame (3) and the mounting seat (4) form a triangle structure, and then the main paddle frame (2) is stably positioned on the mounting seat (4); The lower end of the main paddle rack (2) is provided with a containing cavity (23) capable of containing the auxiliary paddle rack (3); In the storage state, the main paddle rack (2) is parallel to the mounting seat (4), and the auxiliary paddle rack (3) is positioned in the containing cavity (23).
  2. 2. An airfoil-shaped paddle rack according to claim 1, wherein the upper end surface of the auxiliary paddle rack (3) is an arc-shaped second arc-shaped surface (301), the lower end surface is a second plane (302), and the cross section of the auxiliary paddle rack (3) is an airfoil-shaped.
  3. 3. The wing-type paddle rack according to claim 1, wherein a sealing plate (6) is longitudinally and slidably connected in the accommodating cavity (23), a sliding groove (61) is formed in the sealing plate (6) along the length direction of the main paddle rack (2), a rotating column (31) which is slidably connected in the sliding groove (61) is formed in the auxiliary paddle rack (3), and a lock catch (5) is rotatably connected to the mounting seat (4); Under the use state, shrouding (6) and main oar frame (2) lower terminal surface parallel and level, hasp (5) are fixed vice oar frame (3) on mount pad (4).
  4. 4. The wing type paddle rack according to claim 3, wherein the upper end of the mounting seat (4) is provided with a mounting column (41), the lower end of the main paddle rack (2) is provided with a rotating sleeve (22) which is rotationally sleeved with the mounting column (41), the upper end of the mounting column (41) is provided with a containing groove (42) along the radial direction, and the sealing plate (6) is provided with a longitudinal moving block (63) which can be clamped with the containing groove (42); In the use state, the longitudinal moving block (63) is positioned in the accommodating groove (42), so that the rotation of the main paddle frame (2) is limited.
  5. 5. An airfoil-shaped paddle rack as claimed in claim 4, characterised in that the axis of the mounting post (41) is at an angle to the vertical plane and the axis of the rotating sleeve (22) is non-perpendicular to the length direction of the main paddle rack (2).
  6. 6. The wing-type paddle rack according to claim 4, wherein the sealing plate (6) is provided with a rotation stopping socket (62), a rotation stopping plug block (7) which can be plugged with the rotation stopping socket (62) is connected in the rotating column (31) in a sliding manner along the length direction of the auxiliary paddle rack (3), and a connecting rod (71) which is arranged along the length direction of the auxiliary paddle rack (3) is arranged on the rotation stopping plug block (7); the lock catch (5) is provided with an inclined pushing block (52) capable of driving the connecting rod (71) to move, and in a use state, the inclined pushing block (52) enables the anti-rotation inserting block (7) to be inserted into the anti-rotation inserting opening (62).
  7. 7. An airfoil-shaped paddle rack according to claim 1, wherein the upper end of the mounting seat (4) is provided with a retaining plate (43), and the auxiliary paddle rack (3) is abutted against the retaining plate (43) in a use state.
  8. 8. The racing boat is characterized by comprising a boat body (1), a sliding seat (11) connected in a sliding manner in the boat body, and pedals (12) connected in the boat body (1) in a rotating manner, wherein wing-shaped paddle frames as set forth in any one of claims 1-7 are arranged on two sides of the boat body (1).

Description

Wing type paddle rack and racing boat Technical Field The invention belongs to the field of racing boats, and particularly relates to an airfoil-shaped paddle frame and a racing boat. Background The racing boat is one of the conventional racing projects of the olympic games. One or more paddle hands sit on the boat and exercise on the water in the advancing direction of the boat by applying the muscle force of the paddle hands and the paddle frame through simple lever action. For the game, the time is a standard for measuring the win or lose, and 0.1 second can change the win or lose of a game, so that the time shortening is particularly important for athletes. However, the whole paddle rack on the existing racing boat is cylindrical, resistance can be generated in the advancing process of the racing boat, physical consumption of athletes is increased, and time is increased. Disclosure of Invention The invention aims to solve the technical problem of providing an airfoil-shaped paddle rack and a racing boat, which can reduce the resistance born by the racing boat in the advancing process and reduce the time of athletes. The wing type paddle rack comprises a main paddle rack, wherein one end of the main paddle rack is provided with a connecting rack connected with paddles. The upper end face of the main paddle frame is an arc-shaped first arc-shaped surface, the lower end face of the main paddle frame is a first plane, and the cross section of the main paddle frame is an airfoil. When advancing, the air velocity of the first arcwall face surface is greater than the air velocity of the first plane surface, and then the pressure of main oar frame up end is less than the pressure of main oar frame lower terminal surface, and main oar frame receives ascending thrust. The invention further provides an installation seat, the main paddle rack is rotatably connected to the installation seat, and an auxiliary paddle rack is arranged between the main paddle rack and the installation seat. Under the use state, the main paddle frame, the auxiliary paddle frame and the mounting seat form a triangle structure, and then the main paddle frame is stably positioned on the mounting seat. As a further improvement of the invention, the upper end surface of the auxiliary paddle frame is an arc-shaped second arc-shaped surface, the lower end surface of the auxiliary paddle frame is a second plane, and the cross section of the auxiliary paddle frame is an airfoil shape. As a further improvement of the invention, the lower end of the main paddle rack is provided with a containing cavity capable of containing the auxiliary paddle rack. Under the storage state, the main paddle frame is parallel to the mounting seat, and the auxiliary paddle frame is positioned in the containing cavity. As a further improvement of the invention, a sealing plate is longitudinally and slidably connected in the accommodating cavity, a sliding groove is formed in the sealing plate along the length direction of the main paddle frame, a rotating column which is slidably connected in the sliding groove is arranged on the auxiliary paddle frame, and a lock catch is rotatably connected on the mounting seat. Under the use state, the shrouding is parallel and level with main oar frame lower terminal surface, the hasp is fixed vice oar frame on the mount pad. As a further improvement of the invention, the upper end of the mounting seat is provided with a mounting column, the lower end of the main paddle frame is provided with a rotating sleeve which is in rotating sleeve joint with the mounting column, the upper end of the mounting column is provided with a containing groove along the radial direction, and the sealing plate is provided with a longitudinal moving block which can be clamped with the containing groove. In the use state, the longitudinal moving block is positioned in the accommodating groove, so that the rotation of the main paddle frame is limited. As a further improvement of the invention, the axis of the mounting column forms an included angle with the vertical plane, and the axis of the rotating sleeve is not vertical to the length direction of the main paddle frame. The auxiliary paddle rack is characterized in that the sealing plate is provided with a rotation stopping socket, a rotation stopping insertion block capable of being inserted into the rotation stopping socket is connected in the rotating column in a sliding mode along the length direction of the auxiliary paddle rack, and a connecting rod arranged along the length direction of the auxiliary paddle rack is arranged on the rotation stopping insertion block. And in a use state, the inclined pushing block enables the anti-rotation inserting block to be inserted into the anti-rotation inserting opening. As a further improvement of the invention, the upper end of the mounting seat is provided with the retaining plate, and the auxiliary paddle rack is abutted against the retaining plate in