CN104000362B - A self-adaptive mountaineering cross-country stick imitating ostrich feet - Google Patents

Abstract

The invention discloses a kind of imitative ostrich foot self adaptation to climb the mountain cross-country cane, be made up of cane bar, top cover, lower support structure, spheroid, spheroid is arranged on the lower end of cane bar, above lower support structure, top cover is provided with ball-and-socket, spheroid is arranged in ball-and-socket, top cover covers on spheroid, top cover is linked together by multiple attachment screw and lower support structure, groove structure is formed in the middle of the bottom surface of lower support structure, the front portion of lower support structure bottom surface is provided with multiple convex closure, and the rear portion of lower support structure bottom surface is provided with ellipsoid structure.The present invention starts with from the lower support structure of alpin-stock and cane bar rotational structure, design cane bar can rotate around the centre of sphere with user's arm and there is the cross-country cane of mountain-climbing of unique lower support structure, can simultaneous adaptation meadow, hard pavement, muddy road surface and sandy soil road surface hiker use.

Description

A self-adaptive mountaineering cross-country stick imitating ostrich feet

technical field

The invention belongs to the technical field of engineering bionics, and in particular relates to a bionic mountaineering cross-country stick which imitates the three-dimensional curved surface of the sole of the ostrich foot and the movement mechanism of the metatarsophalangeal joint of the ostrich foot.

Background technique

Nowadays, more and more people adopt mountaineering and trekking as a large outdoor activity. Mountain climbing or trekking is a better exercise method, which can enable non-professionals to achieve the purpose of strengthening the body and honing personal perseverance under the condition of appropriate exercise intensity.

In outdoor sports, proper use of sports equipment can often achieve twice the result with half the effort. Trekking poles or cross-country poles are an essential tool for people to carry out outdoor hiking. Trekking poles can bring many benefits to outdoor sportsmen in hiking activities, such as improving the stability of walking and reducing the burden on the legs. Studies have shown that using trekking poles while walking can reduce the force applied to muscle joints such as legs and knees by at least 22%, making the legs feel more comfortable! At the same time, it can improve the range and frequency of body movements, increase walking speed, evenly exercise the muscles of the whole body, protect the waist and spine, and reduce physical energy consumption by 30%.

There are many kinds of trekking poles that are common on the market at present, and most of the pole heads adopt the pole tip structure. This trekking pole has good adaptability on conventional hard roads or relatively hard roads, and the tip of the pole can enter the soil to achieve the purpose of increasing traction and assisting walking. However, once encountering soft roads, such as muddy roads and sandy soil roads, this stick will be inserted into the soil or sand very deeply, the traction performance will be reduced, and it will be more laborious when the user needs to pull out the stick body from the soil when stepping. The physical energy of the athlete is consumed, and the function of assisting walking is reduced. In addition, the pole of most trekking poles is directly fixed to the bottom structure. When using it, as the user's center of gravity moves, the pole body moves around the tip of the pole and moves with the body. If the trekking pole is inserted too deep into the ground, it will not be able to wrap around the pole The tip rotates so that the stick can only be pulled out of the ground, causing discomfort and even more tiredness to the user.

The African ostrich is native to Africa and Arabia, and lives in vast desert areas and savannahs. It is the largest and heaviest bird in the world. According to the attributes of birds, ostriches belong to the ratites, that is, the sternum is flat without keel protrusions and the collarbone is degenerated. Ostriches have wings, but they cannot fly. They are mainly used for sports balance, so their main sports ability is realized by their strong and well-developed hind limbs. The ability of ostriches to run in a sandy environment is amazing, mainly in terms of stability, durability and high speed. After measurement, the ostrich has a span of 4-7m per step, a continuous running speed of about 50-60km/h, and can last for more than half an hour, and a sprint speed of more than 70km/h. It is the most powerful biped on land. class animals. The superior running and cross-country abilities of ostriches are closely related to its body structure, organs, feathers, neck, wings, and legs, and are the result of the cooperation of multiple parts. However, the ostrich's feet are directly in contact with the sand, which plays a key role in the process of crossing the sand. Due to the optimization of natural evolution, there are only two toes left on the ostrich foot, which are the third toe (inner toe) and fourth toe (outer toe). toenails. The fourth toe is smaller, only 1/2 the length of the third toe, and the toenail has degenerated. When an ostrich runs, only the third toe touches the ground, and the fourth toe only plays a role in maintaining body balance. Whether it is walking or running, the plantar surface of the third toe of the ostrich foot is always in direct contact with the ground, so the plantar surface of the third toe of the ostrich foot is one of the important factors that affect the fast and stable running of the ostrich on the desert/grassland. Using engineering bionics technology, applying the curved surface features of the third toe of the ostrich foot to the mountaineering cross-country stick will enhance the stick body and the ground, enhance the stability of the user's body, thereby increasing the user's traction and effectively assisting Mountaineering or trekking enthusiasts walk forward.

Contents of the invention

The purpose of the present invention is to provide a self-adaptive mountaineering cross-country pole imitating ostrich feet. The present invention starts from the bottom support structure of the trekking pole and the rotating structure of the pole, and designs a pole that can rotate around the center of the ball with the user's arm and has a unique The mountaineering cross-country poles with the bottom support structure can be used by hikers on grassland, hard road, muddy road and sandy road at the same time.

The present invention is composed of a rod, a top cover, a bottom support structure, and a sphere. The sphere is arranged at the lower end of the rod. The top of the bottom support structure and the top cover are provided with a ball socket. The ball is located in the ball socket, and the top cover covers the ball. , the top cover is connected with the bottom support structure through a plurality of connecting screws, a groove structure is formed in the middle of the bottom surface of the bottom support structure, a plurality of convex hulls are arranged on the front part of the bottom surface of the bottom support structure, and a plurality of protrusions are arranged on the bottom surface of the bottom support structure, and Has an ellipsoidal structure.

The ellipsoid structure is fixed on the bottom surface of the bottom support structure by screws passing through the top cover, and the bottom support structure is convenient for installation and disassembly of the ellipsoid structure.

The rod dust cover is fixed on the top cover, and the rod dust cover is set on the root of the rod. When the rod rotates, the upper mouth of the rod dust cover is always in close contact with the rod to prevent soil from entering Inside the rotating mechanism. The rod dust cover is made of rubber.

The ball cooperates with the ball socket to realize rotation in any direction around the vertical axis. When the rod is rotated to contact with the upper circular edge of the top cover, the maximum rotation angle of the rod is 25°.

The top cover and the bottom support structure are connected by connecting screws, which facilitates the installation and disassembly of the top cover and the bottom support structure.

When the bionic stick is used on a sandy soil road, the groove structure of the bottom support structure plays the role of sand-fixing, flow-limiting and anti-slip.

The front convex hull of the bottom support structure is directly processed on the bottom support structure, and the convex hull structure increases the frictional force of the bottom support structure to the ground, thereby increasing the user's traction.

The bionic design method of the ellipsoid surface of the ellipsoid structure, the groove surface of the groove structure and the gentle curved surface of the present invention:

First, the 3D point cloud of the curved surface of the third toe of the ostrich foot was obtained by a 3D scanner and a geometric model was constructed, and the sole of the third toe of the ostrich foot was divided into three parts, namely, the gentle curved surface of the forefoot, the middle groove surface and the convex crown surface of the heel. Import the surface point cloud data of the third toe bottom of the ostrich foot into the CATIA digital design module for point cloud filtering, retain the feature points that can reflect the surface features, and export the three-dimensional coordinates of the feature point cloud in the form of txt text.

Import the feature point cloud data of the forefoot buffer surface and the middle groove surface into Matlab software for surface fitting, and obtain the surface graphics after fitting the two surfaces. The surface of the middle groove area is a groove with a low middle and high sides , the middle part of the fitting curved surface of the forefoot buffer zone tends to be gentle, and the two sides are slightly lower than the middle part. Considering the needs of practical applications in the present invention, the gentle curved surface of the forefoot is simplified into a plane. Import the characteristic point cloud data of the heel convex crown surface into the nonlinear regression module of SAS software for surface fitting with the ellipse model, and obtain the fitted graphics, in which the heel convex crown surface is similar to an ellipsoid. Finally, according to the simplified features of the three surfaces, it is modeled in a 3D software, and the surfaces are connected through a reasonable transition method to obtain the bionic stick support body. The mastoid structure is distributed on the sole of the ostrich. At the same time, referring to the football spikes used for running on the grass, a certain number of spikes (convex hulls) are distributed on the plane to enhance the friction between the bionic stick and the ground and increase the use of the stick. forward traction.

The bionic trekking poles involved in the present invention have changed the traditional structure that the bottom of the trekking poles is the tip of the trekking poles. Based on the three-dimensional curved surface characteristics of the third toe bottom of the ostrich foot, and using engineering bionic technology, a unique support structure is designed at the bottom of the trekking poles. The support structure can At the same time, it adapts to various road environments such as grassland, hard road, muddy road and sandy soil, and changes the limitation of traditional trekking poles to adapt to a single road environment. At the same time, the present invention designs a ball-and-socket structure at the end of the rod, so that the rod can rotate around the bottom support structure at any angle, which enhances the user's flexibility and body comfort when using it, and also makes the user feel comfortable during the entire exercise process. Among them, the bottom support structure of the pole is always in full contact with the ground, which enhances the stability of the trekking pole during use, so as to achieve the purpose of assisting the forward movement of the human body.

Beneficial effects of the present invention:

1. The rod can rotate around the center of the sphere with the user's arm, which enhances the user's flexibility and physical comfort when using it.

2. The bottom surface of the bottom support structure has a convex hull, a groove structure and an ellipsoid structure, which can be used by hikers on grasslands, hard roads, muddy roads and sandy soil roads at the same time.

Description of drawings

Fig. 1 is a schematic perspective view of the present invention.

Figure 2 is a side view of the present invention.

Fig. 3 is a cross-sectional view of the present invention.

Fig. 4 is a schematic diagram of the maximum rotation angle of the rod of the present invention.

Fig. 5 is a bottom view of the present invention.

Detailed ways

Please refer to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and shown in Fig. 5, the present invention is made of rod 1, top cover 3, bottom support structure 5, sphere 10, and sphere 10 is arranged on the lower end of rod 1, The top of the bottom support structure 5 and the top cover 3 are provided with a ball socket 51, the ball 10 is located in the ball socket 51, the top cover 3 is covered on the ball 10, the top cover 3 is connected with the bottom support structure 5 through a plurality of connecting screws 4 A groove structure 8 is formed in the middle of the bottom surface of the bottom support structure 5 , a plurality of convex bumps 9 are arranged on the front part of the bottom surface of the bottom support structure 5 , and an ellipsoid structure 7 is arranged on the rear part of the bottom surface of the bottom support structure 5 .

The ellipsoid structure 7 is fixed on the bottom surface of the bottom support structure 5 through the top cover 3 and the bottom support structure 5 by the screws 6, so as to facilitate the installation and disassembly of the ellipsoid structure 7.

The rod dust cover 2 is fixed on the top cover 3, and the rod dust cover 2 is sleeved on the root of the rod 1. When the rod 1 rotates, the upper mouth of the rod dust cover 2 is always in contact with the rod. 1 Close contact to prevent soil from entering the interior of the rotating mechanism. The material of rod dust cover 2 is rubber.

The sphere 10 cooperates with the ball socket 51 to realize rotation in any direction around the vertical axis. When the rod 1 rotates to contact with the upper circular edge of the top cover 3, the maximum rotation angle of the rod 1 is 25°, as shown in FIG. 4 .

The top cover 3 and the bottom support structure 5 are connected by connecting screws 4 , which facilitates the installation and disassembly of the top cover 3 and the bottom support structure 5 .

When the bionic stick is used on a sandy soil road, the groove structure 8 of the bottom support structure 5 plays the role of sand-fixing, flow-limiting and anti-skidding.

The front convex hull 9 of the bottom support structure 5 is directly processed on the bottom support structure 5, and the convex hull 9 structure increases the frictional force of the bottom support structure 5 to the ground, thereby increasing the user's traction.

Claims (1)

1. A self-adaptive mountaineering cross-country pole imitating ostrich feet, which is composed of a pole (1), a top cover (3), a bottom support structure (5), and a sphere (10). The sphere (10) is set on the pole (1) ), the top of the bottom support structure (5) and the top cover (3) are provided with a ball socket (51), the ball (10) is located in the ball socket (51), and the top cover (3) is covered on the ball (10) , the top cover (3) is connected with the bottom support structure (5) through a plurality of connecting screws (4), the bottom support structure (5) has a groove structure (8) formed in the middle of the bottom surface, and the bottom support structure (5) ) is provided with a plurality of convex hulls (9) at the front of the bottom surface, and an ellipsoid structure (7) is provided at the rear of the bottom surface of the bottom support structure (5), which is characterized in that: the sphere (10) and the ball socket (51 ) to achieve rotation around the vertical axis in any direction. When the rod (1) rotates to contact with the upper circular edge of the top cover (3), the maximum angle of rotation of the rod (1) is 25°.