Physical training device simulating sailboard sail rocking

Abstract

The invention relates to a physical training device simulating sailboard sail rocking. The physical training device comprises a base frame; the attitude simulation platform is connected to the upper part of the base frame through a multi-degree-of-freedom hinge mechanism; the mechanical resistance generating device is arranged on the base frame; one end of the traction cable is wound and connected to the output end of the mechanical resistance generating device, and the other end of the traction cable is provided with a grab handle for a trainer to hold; the two ends of the mechanical coupling feedback mechanism are connected with the multi-degree-of-freedom hinge mechanism, the bottom of the posture simulation platform and the resistance adjusting input end of the mechanical resistance generating device respectively, and posture changes of the platform are mechanically transmitted into adjustment of resistance parameters. By the adoption of the structure, real resistance simulation of the device is completed, the body can receive feedback in time, and the use experience degree and the training effect are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of sailing sports simulation technology, in particular to a physical training device for simulating the sailing of a windsurfing board. BACKGROUND

[0002] As one of the competition items, the training of windsurfing is usually carried out on the water, but this sport is often limited by the environment, weather and other conditions, so it is necessary to carry out land simulation training to improve the training efficiency and effect.

[0003] Since the International Sailing Federation lifted the restrictions on the rules of sailing, sailing has become a key factor in winning windsurfing competitions. Therefore, windsurfing athletes from various countries have used auxiliary training equipment to strengthen the training of their sailing-specific physical fitness and skills. The existing land sailing training equipment has the following shortcomings: the resistance simulation is not realistic; most of them use counterweights, fixed friction or simple wind resistance to provide constant or simple linear resistance, which cannot simulate the nonlinear aerodynamic resistance that changes dynamically with wind speed and attack angle of the sail in real sailing, and the feedback is missing, the platform shakes and the resistance on the hands is disconnected, the closed loop of body posture-power feedback cannot be formed, and the training efficiency is low.

[0004] Therefore, there is an urgent need to provide a physical training device for simulating the sailing of a windsurfing board to solve the above problems. SUMMARY

[0005] The purpose of the present application is to overcome the shortcomings and defects of the prior art, and to provide a physical training device for simulating the sailing of a windsurfing board, which realizes real resistance simulation of the device and timely feedback of the body, thereby improving the use experience and training effect.

[0006] The purpose of the present application is achieved by the following technical solutions:

[0007] A physical training device for simulating the sailing of a windsurfing board, characterized in that it comprises:

[0008] a base frame;

[0009] a posture simulation platform connected to the top of the base frame through a multi-degree-of-freedom hinge mechanism;

[0010] a mechanical resistance generating device arranged on the base frame;

[0011] a traction cable, one end of which is wound and connected to the output end of the mechanical resistance generating device, and the other end is provided with a handle for the trainer to hold;

[0012] A mechanical coupling feedback mechanism is connected with the multi-DOF hinge mechanism, the bottom of the attitude simulation platform and the resistance adjustment input end of the mechanical resistance generating device, and mechanically transmits the attitude change of the platform to the adjustment of the resistance parameter.

[0013] Optionally, the mechanical resistance generating device comprises a main shaft, a centrifugal mechanism, a counterweight and a friction brake ring, the traction cable is wound on the main shaft; the centrifugal mechanism is fixedly installed on the main shaft and rotates synchronously with the main shaft, the centrifugal mechanism is provided with a centrifugal counterweight which can slide radially; the friction brake ring is coaxially sleeved outside the main shaft; wherein the centrifugal force generated by the centrifugal counterweight when rotating with the main shaft makes the outer end of the centrifugal counterweight press tightly against the inner wall of the friction brake ring, thereby generating a braking torque.

[0014] Optionally, a set of pre-tightening springs are arranged between the centrifugal mechanism and the friction brake ring, for adjusting the initial rotation speed threshold at which the centrifugal counterweight starts to generate effective braking force.

[0015] Optionally, at least one annular sliding groove is radially arranged on the flange of the centrifugal mechanism; the bottom or back of the centrifugal counterweight is provided with a protrusion matched with the annular sliding groove, so that the centrifugal counterweight can slide radially.

[0016] Optionally, the mechanical coupling feedback mechanism is a rigid linkage mechanism or a steel wire traction mechanism; when the attitude simulation platform is tilted, the adjustment handle on the mechanical resistance generating device is directly driven through the mechanism to change the pre-tightening force of the pre-tightening spring in the centrifugal mechanism.

[0017] Optionally, the multi-DOF hinge mechanism is a spherical hinge, and a plurality of elastic plungers with different stiffnesses are arranged around the spherical hinge and the base frame.

[0018] Optionally, a rotatable annular limiting disc is arranged around the spherical hinge, and the swing angle of the attitude simulation platform in a specific direction can be selectively limited or released by rotating the limiting disc, so as to simulate the platform stability in different directions.

[0019] Optionally, it further comprises a lateral tension training module, which comprises a transverse slide rail symmetrically arranged on both sides of the attitude simulation platform, a sliding block installed on the transverse slide rail, a lateral pull belt connected with the sliding block, and a lateral spring providing a reset tension force for the sliding block.

[0020] Optionally, the attitude simulation platform is provided with a mast base mounting hole array with adjustable spacing and angle, for fitting and installing simulation masts of different specifications.

[0021] Optionally, the friction brake ring is fixed by a quick detachable clamp and equipped with a spare brake ring made of different friction coefficient materials.

[0022] Compared with the prior art, the application has the following beneficial effects:

[0023] In the application, the physical training device for simulating sailboard sailing includes a base frame, a posture simulation platform, a mechanical resistance generating device, a traction cable and a mechanical coupling feedback mechanism. The base frame is fixed to the ground. The posture simulation platform for standing is installed above the base frame through a multi-degree-of-freedom hinge mechanism. The structure enables the platform to tilt and swing in front-back, left-right and combined directions around the multi-degree-of-freedom hinge mechanism, thereby simulating the rocking caused by sea waves. The mechanical resistance generating device is installed on one side of the base frame. One end of the traction cable is wound around the output end of the resistance generating device, and the other end is led to the front of the platform through a guide pulley, and the end is provided with a handle for the trainer to hold. The lower end of the mechanical coupling feedback mechanism is hinged to the movable part of the multi-degree-of-freedom hinge mechanism, and the upper end extends to the side of the resistance generating device and is connected with an adjusting handle. By introducing the mechanical coupling feedback mechanism, the posture change of the platform under the feet of the trainer is directly and timely connected with the resistance perception of the hands at the mechanical structure level, thereby realizing the proprioception of controlling the sail with the body in the real sailboard sailing. The resistance is adjusted by the mechanical resistance generating device, and the changed resistance is transmitted to the user through the traction cable. Through the above components, the resistance simulation of the device is realized, the proprioception can timely receive feedback, and the use experience and training effect are improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Fig. 1 It is a structural schematic diagram of the application.

[0025] Fig. 2 It is a structural schematic diagram of the mechanical resistance generating device in the application.

[0026] Fig. 3 It is a structural schematic diagram of the tension training module in the application.

[0027] The above drawings include the following reference signs:

[0028] 1, base frame, 2, posture simulation platform, 31, spherical hinge, 32, elastic plunger, 33, annular limiting disc, 4, mechanical resistance generating device, 41, main shaft, 42, centrifugal mechanism, 43, counterweight, 44, friction brake ring, 45, pre-tightening spring, 46, annular sliding groove, 47, protrusion, 5, mechanical coupling feedback mechanism, 6, tension training module, 61, sliding block, 62, transverse sliding rail, 63, lateral pull belt, 64, lateral spring, 7, traction cable. DETAILED DESCRIPTION

[0029] The application will be described in further detail below with reference to the embodiments and drawings, but the embodiments of the application are not limited thereto.

[0030] The technical scheme of the application provides a physical training device simulating sailboard sailing.

[0031] With reference to Figs. 1 to 3 In the embodiment, the physical training device simulating sailboard sailing comprises a base frame 1, a posture simulation platform 2, a mechanical resistance generating device 4, a traction cable 7 and a mechanical coupling feedback mechanism 5.

[0032] The base frame 1 is fixed to the ground.

[0033] The posture simulation platform 2 is installed above the base frame 1 through a multi-degree-of-freedom hinged mechanism.

[0034] The mechanical resistance generating device 4 is installed on the base frame 1.

[0035] One end of the traction cable 7 is wound around the output end of the mechanical resistance generating device 4, and the other end is provided with a handle for the trainer to hold.

[0036] The mechanical coupling feedback mechanism 5 is connected to the multi-degree-of-freedom hinged mechanism, the bottom of the posture simulation platform 2 and the resistance adjusting input end of the mechanical resistance generating device 4 at both ends, and mechanically transmits the posture change of the platform to the adjustment of the resistance parameter.

[0037] Optionally, in the embodiment, the physical training device simulating sailboard sailing comprises a base frame 1, a posture simulation platform 2, a mechanical resistance generating device 4, a traction cable 7 and a mechanical coupling feedback mechanism 5. The base frame 1 is fixed to the ground. The posture simulation platform 2 is installed above the base frame 1 through a multi-degree-of-freedom hinged mechanism. This structure enables the platform to tilt and swing in front-back, left-right and combined directions around the multi-degree-of-freedom hinged mechanism, realizing the simulation of the rocking caused by sea waves. The mechanical resistance generating device 4 is installed on the inside of the base frame 1. One end of the traction cable 7 is wound around the output end of the resistance generating device, and the other end is led to the front of the platform through a guide pulley, and the end is provided with a handle for the trainer to hold. The lower end of the mechanical coupling feedback mechanism 5 is hinged to the movable part of the multi-degree-of-freedom hinged mechanism, and the upper end extends to the side of the resistance generating device and is connected to an adjusting handle. By introducing the mechanical coupling feedback mechanism 5, the posture change of the platform under the trainer's feet is directly and real-timely connected to the resistance perception of the trainer's hands at the mechanical structure level, realizing the simulation of the proprioception of controlling the sail with the body in real sailboard sailing. The resistance is adjusted by the mechanical resistance generating device 4, and the changed resistance is transmitted to the user through the traction cable 7.

[0038] When the trainer stands on the platform and changes the center of gravity to cause the platform to tilt forward (or in any direction), the platform rotates around the multi-degree-of-freedom hinge mechanism. This rotation causes the mechanical resistance generating device 4 to adjust the resistance in real time. The change in resistance means that the trainer needs to exert different sizes of initial force to pull the traction cable 7 (simulate windward pressurization); when the platform returns or leans backward, the resistance decreases, and the starting feeling becomes lighter (simulate downwind state). Through the above-mentioned components, the real simulation of the resistance of the device is completed, and the body can timely receive feedback, thereby improving the use experience and training effect.

[0039] Optionally, in this embodiment, the mechanical resistance generating device 4 includes a main shaft 41 rotatably supported on the bearing seat, and the traction cable 7 is directly wound on the main shaft 41; a centrifugal mechanism 42 is fixedly installed on the main shaft 41, the centrifugal mechanism 42 includes a hub and a plurality of radial sliding grooves, and each sliding groove is provided with a freely slidable centrifugal weight 43; and a fixed friction brake ring 44 is coaxially installed outside the centrifugal mechanism 42. When the trainer pulls slowly, the resistance is small; when the traction cable is pulled explosively and quickly, the main shaft 41 rotates at high speed, the centrifugal weight 43 is radially thrown out under the action of centrifugal force and tightly presses the inner wall of the friction brake ring 44, thereby generating a huge braking torque. This resistance increases nonlinearly with the pulling speed, which extremely realistically simulates the real wind resistance, and does not require any electronic control, and the structure is reliable and durable.

[0040] Optionally, in this embodiment, a set of pre-tightening springs 45 are further arranged between the centrifugal mechanism 42 and the friction brake ring 44, and are used for adjusting the initial rotation speed threshold at which the centrifugal weight 43 starts to generate effective braking force. The pre-tightening spring 45 is in a stretched state at normal times, and a reset force generated thereby causes the centrifugal weight 43 to be not connected with the friction brake ring 44. By adjusting the pre-tightening force, the rotation speed (that is, the initial pulling force) required to make the centrifugal weight 43 overcome the reset force to start to effectively press the brake ring can be controlled, so that the device can flexibly simulate different starting resistances from light wind to strong wind, and adapt to the training needs of athletes of different levels. Further, in this embodiment, at least one through T-shaped annular sliding groove 46 is radially machined on the spokes of the flange of the centrifugal mechanism 42. The cross section of the sliding groove is a standard T shape, providing two upper and lower guide bearing surfaces. The centrifugal weight 43 corresponds to the sliding groove, and the bottom of the centrifugal weight 43 is precisely machined with a T-shaped protrusion 47 (or T-shaped sliding block 61) that is completely matched with the T-shaped sliding groove. When assembled, the T-shaped protrusion 47 is embedded in the T-shaped sliding groove from the side of the flange, so that the centrifugal weight 43 is clamped in the sliding groove like a drawer. This design ensures that the centrifugal weight 43 can only slide along the radial straight trajectory of the sliding groove, and the upper and lower surfaces of the T-shaped structure bear the huge centrifugal force and possible impact load during high-speed rotation, and the sliding is stable and extremely stable.

[0041] Optionally, in this embodiment, the mechanical coupling feedback mechanism 5 is a rigid linkage mechanism composed of connecting rods and pivots. When the trainee moves the center of gravity to cause the posture simulation platform 2 to tilt forward or backward or left or right, the moving part of the multi-degree-of-freedom articulated mechanism will drive the connecting rod articulated therewith to displace, the displacement is transmitted and amplified through the connecting rod mechanism, and finally converted into a push-pull action on the side adjusting handle of the resistance generating device. The rigid linkage mechanism ensures that the feedback is direct, non-delayed and accurate; the platform tilt is immediately converted into the action of the adjusting handle, thereby changing the stretching or compression amount of the pre-tightening spring 45 in real time. For example, when the platform simulates the sailboard tilting forward to ride the wind, the connecting rod mechanism will pull the adjusting handle to increase the pre-tightening force, so that the resistance felt by the trainee's hands is also increased synchronously, simulating the real feedback of needing more force to press the sail surface, and realizing the deep mechanical coupling of body posture and resistance feeling.

[0042] Optionally, in this embodiment, the multi-degree-of-freedom articulated mechanism is a spherical hinge 31. Instead of rigid contact between the bottom of the spherical hinge 31 and the mounting surface of the base frame 1, a plurality of independent elastic plungers 32 are uniformly arranged around the spherical hinge 31. The upper end of each elastic plunger 32 abuts against the spherical hinge 31, and the lower end is fixed on the base frame 1. The stiffness of each elastic plunger 32 can be different, and each elastic plunger 32 can be individually disassembled and replaced. The combination of the spherical hinge 31 and the multi-stiffness elastic plungers 32 realizes the multi-directional tilting of the platform and the self-defined reset feedback. The elastic plungers 32 not only provide the reset force after the platform tilts, but also simulate the dynamic stability of the sailboard in various sea conditions through different stiffness combinations. For example, replacing the softer plunger can simulate the soft rocking in calm waters, and replacing the harder plunger can simulate the violent jolt in strong waves.

[0043] Optionally, in this embodiment, around the periphery of the elastic plungers 32, an annular limiting disc 33 is arranged which can rotate around the central axis. The inner ring of the limiting disc is provided with a protruding 47 block. Rotating the angle of the limiting disc can selectively move the block above or to the side of a specific elastic plunger 32, thereby limiting the compression stroke in that direction. The annular limiting disc 33 provides a quick mechanical locking function for the tilting freedom of the platform. For example, when simulating sailing against the wind, the limiting disc can be rotated to limit the forward and backward tilting of the platform while allowing left and right tilting; when simulating side wind sailing for basic training, the left and right tilting can be locked.

[0044] Optionally, in the embodiment, lateral pulling training modules 6 are symmetrically installed on both side edges of the posture simulation platform 2, each of which includes a transverse slide rail 62 fixed to the side of the platform, a slide block 61 slidable on the slide rail, a lateral pulling belt 63 connected to the slide block 61, and a lateral spring 64 connected between the slide block 61 and the end of the slide rail; the modules are used to specifically train the lateral pushing and pulling boom strength and anti-rotation core strength in sailing. The trainer can pull the pulling belt to one side with the foot or hand, move the slide block 61 against the pulling force of the spring, and simulate the action of pushing the sail to the side and back when sailing against the wind.

[0045] Optionally, in the embodiment, the posture simulation platform 2 is provided with a mast base mounting hole array with adjustable spacing and angle, which is used to adapt to the installation of different specifications of simulation masts. The mounting hole array allows the base of the simulation mast to be fixed on different holes by bolts, so that the trainer can flexibly adjust the front and back position, left and right span, and forward inclination angle of the mast according to the personal height, training habits (such as small amplitude high frequency shaking when simulating the start or large amplitude low frequency shaking when sailing against the wind).

[0046] Optionally, in the embodiment, the friction brake ring 44 is fixed on the support seat of the base frame 1 by two semicircular clamps, which are fastened by bolts, and the brake ring can be quickly removed by loosening the bolts. The device is equipped with a plurality of spare brake rings with different friction coefficients of lining materials; the clamp 4 is fixed in a way that makes it very convenient to replace the brake ring. By replacing the brake rings with different friction coefficients, the maximum resistance upper limit of the device at high speed can be set, and the application range and training intensity interval of the device are expanded.

[0047] The embodiments only express the embodiments of the present application, which are described in detail and specifically, but cannot be understood as the limitation of the patent scope of the present application. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A physical training device simulating windsurfing sailing, characterized in that, include: Base frame; The attitude simulation platform is connected to the base frame above by a multi-degree-of-freedom hinge mechanism; A mechanical resistance generating device is mounted on the base frame; The traction cable has one end wound and connected to the output end of the mechanical resistance generating device, and the other end is provided with a handle for the trainee to hold. The mechanical coupling feedback mechanism has its two ends connected to the multi-degree-of-freedom hinge mechanism, the bottom of the attitude simulation platform, and the resistance adjustment input end of the mechanical resistance generating device, respectively, so as to mechanically transmit the attitude change of the platform as the adjustment of the resistance parameter.

2. The physical training device for simulating windsurfing and sailing according to claim 1, characterized in that, The mechanical resistance generating device includes a main shaft, a centrifugal mechanism, a counterweight, and a friction brake ring. The traction cable is wound around the main shaft. The centrifugal mechanism is fixedly installed on the main shaft and rotates synchronously with it. The centrifugal mechanism is provided with a radially sliding centrifugal counterweight. The friction brake ring is coaxially sleeved on the outside of the main shaft. The centrifugal force generated by the centrifugal counterweight when rotating with the main shaft causes its outer end to press against the inner wall of the friction brake ring, thereby generating a braking torque.

3. The physical training device for simulating windsurfing sailing according to claim 2, characterized in that, A set of pre-tightening springs is also provided between the centrifugal mechanism and the friction brake ring to adjust the initial speed threshold at which the centrifugal counterweight begins to generate effective braking force.

4. The physical training device for simulating windsurfing and sailing according to claim 3, characterized in that, At least one annular groove is provided radially on the flange of the centrifugal mechanism; the bottom or back of the centrifugal counterweight is provided with a protrusion that cooperates with the annular groove, so that the centrifugal counterweight can slide radially.

5. The physical training device for simulating windsurfing and sailing according to claim 1, characterized in that, The mechanical coupling feedback mechanism is a rigid linkage mechanism or a wire traction mechanism; when the attitude simulation platform tilts, the adjustment handle on the mechanical resistance generating device is directly driven by the mechanism to change the preload of the preload spring in the centrifugal mechanism.

6. The physical training device for simulating windsurfing and sailing according to claim 1, characterized in that, The multi-degree-of-freedom hinge mechanism is a ball joint, and a plurality of independently replaceable elastic plungers with different stiffnesses are arranged around the ball joint and the base frame.

7. The physical training device for simulating windsurfing sailing according to claim 6, characterized in that, A rotatable and adjustable annular limiting disk is provided around the ball joint. By rotating the limiting disk, the swing angle of the attitude simulation platform in a specific direction can be selectively limited or released to simulate the platform stability under different headings.

8. The physical training device for simulating windsurfing and sailing according to claim 1, characterized in that, It also includes a lateral tension training module, which includes transverse slide rails symmetrically arranged on both sides of the posture simulation platform, a slider mounted on the transverse slide rails, a lateral pull strap connecting the slider, and a lateral spring that provides a reset tension for the slider.

9. A physical training device simulating windsurfing and sailing according to claim 1, characterized in that, The attitude simulation platform is equipped with an array of mast base mounting holes with adjustable spacing and angle, which can be used to accommodate the installation of simulated masts of different specifications.

10. A physical training device simulating windsurfing and sailing according to claim 2, characterized in that, The friction brake ring is fixed by a quick-release clamp and is equipped with a spare brake ring made of materials with different coefficients of friction.

Images