CN114225366A

CN114225366A - Skis brake device

Info

Publication number: CN114225366A
Application number: CN202210029237.7A
Authority: CN
Inventors: 吴迪; 黄子豪; 郭鸿宇; 寇忠皓; 尚修为; 许竣皓; 崔晋铭; 丁俊韬; 白宇峰
Original assignee: Dalian Maritime University
Current assignee: Dalian Maritime University
Priority date: 2022-01-11
Filing date: 2022-01-11
Publication date: 2022-03-25

Abstract

The invention discloses a snowboard brake device which comprises a double-head steering engine, a rotating shaft, a support frame and a brake knife, wherein the double-head steering engine is connected with the rotating shaft, the end part of the rotating shaft penetrates through a rotating shaft base and is connected with the support frame, the rotating shaft base is fixed at one end of a snowboard, the end part of the support frame is rotationally connected with the brake knife, a brake spring is further arranged between the support frame and the brake knife, the double-head steering engine and the brake knife are combined to form the brake device, the brake knife is in a suspended state and cannot be inserted into snow to influence sliding under a normal state, when a snowboarder cannot control a sliding plate, the brake knife is driven to be inserted into the snow through rotation of the steering engine, and the problem that safety hazards are caused to the snowboard and the surrounding people due to incapability of speed and direction control in a skiing process is solved.

Description

Skis brake device

Technical Field

The invention relates to the technical field of skiing equipment, in particular to a braking device of a ski.

Background

Skiing is a whole-body aerobic exercise item, is popular with people, can bring speed enjoyment, exercises balance ability, coordination ability and flexibility, and can enhance the cardio-pulmonary function of people. However, due to the limitation of various conditions, people do not have many chances to really touch skiing, so people who can master skiing skills are few, and many beginners and even children cannot control the body balance to fall down, and can not control the skiing skill, and accidents are caused because the skiing skill cannot be stopped in time in a skiing field.

It is counted that 179 of 235 skiing accidents are caused by uncontrollable skis, 41 of skiing equipment such as snow-covered tires are caused by incapability of controlling speed and direction in time, the accidents caused by collision among people are up to 104, the accidents caused by single people are also up to 85, and in the accidents, the fracture is the word eye which appears most frequently and occurs 203 times in total, and the ligament injury also appears 43 times.

According to the knowledge, the Beijing winter sports center and the skiing association in Beijing city in 2018 release 'the popular skiing exercise level standard in Beijing city', skiing is subdivided into 9 levels, each level describes the type of skiing snow tracks suitable for skiers in the level and the skiing technical level required to be achieved by the level, and the standard is released in hopes that the skiers can determine the level of skiing snow tracks suitable for the skiers through 'examination level', and the proper skiing snow tracks are selected according to the level. Even so, the number of injuries caused by skiing is still growing at a rate of 10% per year. As the quality of life of people increases, more and more people are exposed to the sport of skiing, and a device capable of protecting beginners and children is urgently needed.

Disclosure of Invention

The invention provides a snowboard brake device, which aims to solve the technical problem of potential safety hazard caused by incapability of controlling speed and direction in a skiing process.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a snowboard brake comprising: double-end steering wheel, pivot, support frame and brake sword, the double-end steering wheel with the pivot is connected, pivot tip pass the pivot base and with the support frame is connected, the one end at the ski is fixed to the pivot base, the tip of support frame with the brake sword rotates to be connected the support frame with still be equipped with brake spring between the brake sword.

Furthermore, the support frame is provided with a limiting block for limiting the brake knife.

Furthermore, a rotating bearing is arranged between the rotating shaft and the rotating shaft base.

Furthermore, a circuit integration box is further arranged on the ski, a control circuit board is arranged in the circuit integration box, and the control circuit board is in wireless communication with the communication module on the ski pole.

Furthermore, the support frame, the brake tool and the rotating shaft base are made of 7050 aviation aluminum materials.

Has the advantages that: the invention provides a snowboard brake device, which is characterized in that a double-head steering engine and a brake knife are combined to form the brake device, when the brake knife is in a suspended state in a normal state, the brake knife cannot be inserted into snow to influence sliding, when a skier cannot control a sliding plate, the steering engine rotates to drive the brake knife to be inserted into the snow, and the problem that safety hazards are caused to the skier and the surrounding due to the fact that the speed and the direction cannot be controlled in the skiing process is solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of a snowboard brake apparatus disclosed in the present invention;

FIG. 2 is a side view of the snowboard brake of the present disclosure;

in the figure: 1. double-end steering wheel, 2, pivot, 3, support frame, 4, brake sword, 5, pivot base, 6, brake spring, 7, stopper, 8, rolling bearing, 9, circuit integration case.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

However, when the speed of the snowboard relative to the snow is low, the snowboard is in contact with the snow for a time longer than a certain value and the friction force between the snowboard and the snow is increased.

Experiments prove that when the speed of a skier reaches 8m/s, the dynamic friction factor between the skis and the snowfield is increased from mu₁0.25 to μ₂0.125, when the skier is free to slide down from rest along a snow slope with an inclination angle theta of 37 DEG, the initial coefficient of kinetic friction mu₁0.25, by newton's second law:

a₁＝g(sinθ/μ₁cosθ)＝4m/s²

the sliding time is as follows:

t＝v/a₁＝2s

namely, after 2s, the dynamic friction coefficient is changed from mu 1 to 0.25 to mu 2 to 0.125,

the sliding distance is as follows:

X₁＝1/2 a₁t²＝8m

after the dynamic friction factor changes, the dynamic friction factor is obtained according to Newton's second law:

a₂＝g(sinθ/μ₂cosθ)＝5m/s²

that is, when the skier skips less than ten meters, the speed increases to 8m/s, and assuming that the skier skips for 10s while maintaining this state, the skiving speed reaches:

V_x＝a₁t+a₂t₂＝58m/s

if the ordinary snowboard reaches the flat ground to brake, the second law of Newton is that:

Ax₁＝-μ₂g＝-1.25m/s²

Ax₂＝-μ₁g＝-2.5m/s²

the time required for deceleration to stop is:

Tx＝Tx₁+Tx₂＝(Vx-8)/Ax₁+8/Ax₂＝43.2s

the sliding distance of the brake is as follows:

X＝X₁+X₂＝1/2Ax₁Tx₁ ²+1/2Ax₂Tx₂ ²＝1012.8m

that is, without an effective braking mode, an out-of-control skier will slide for 43.2 seconds at most and slip 1012.8m away, which is very likely to cause an accident and cause an immeasurable loss.

The present embodiment provides a snowboard brake apparatus, as shown in fig. 1, comprising: the double-head steering engine comprises a double-head steering engine 1, a rotating shaft 2, a support frame 3 and a brake knife 4, wherein the double-head steering engine 1 is connected with the rotating shaft 2, the end part of the rotating shaft 2 penetrates through a rotating shaft base 5 and is connected with the support frame 3, the rotating shaft base 5 is fixed at one end of a ski, the other end of the support frame 3 is rotatably connected with the brake knife 4, a brake spring 6 is further arranged between the support frame 3 and the brake knife 4, the brake knife 4 is always in a suspended state under a normal state, the double-head steering engine 1 is a double-head steering engine with a large torque, when the speed is uncontrollable, the double-head steering engine 1 rotates to drive the support frame 3 to rotate, the brake knife 4 is inserted into snow to decelerate, the brake spring 6 is slightly high and has a large elastic coefficient, and sufficient buffer energy is provided when the brake device is put down, so that the stability of braking is ensured, when the braking knife 4 is just inserted into snow, the weight of the snowboard and the weight of a person are large, the inertia is large, the braking spring 6 can be pulled open instantly, the force required by braking is provided enough, the snowboard and the person are helped to stop, and the safety of the person is guaranteed.

In particular embodiment, be equipped with on the support frame 3 and be used for right brake sword 4 carries out spacing stopper 7, when brake action in inserting snow as brake sword 4, because speed is too big, great corner appears between brake sword 4 and the support frame 3, probably leads to the braking effect to become invalid, through setting up stopper 7, restricts and appears great corner between support frame 3 and the brake sword 4, can prevent the brake and become invalid, increases brake stability.

In a specific embodiment, as shown in fig. 2, a rotating bearing 8 is arranged between the rotating shaft 2 and the rotating shaft base 5, and the rotating bearing 8 is arranged at the joint, so that smooth rotation is ensured, accidents are prevented, meanwhile, the embedding can be well achieved, and the problem of errors caused by human factors in the manufacturing process is solved.

In the specific embodiment, still be equipped with circuit integration box 9 on the skis, be equipped with control circuit board in the circuit integration box 9, control circuit board and the wireless intercommunication of the communication module on the skiing pole, when the unable control speed appears, press the button on the skiing pole, double-end steering wheel 1 drive is rotatory, puts down brake tool 4 in time through support frame 3, brakes.

In the concrete embodiment, support frame 3, brake sword 4 and pivot base 5 all adopt 7050 aviation aluminum product, light in weight, intensity are high, process through the CNC lathe, and the machining precision is higher, can guarantee brake sword 3, support frame 4 and pivot base 5's stability simultaneously.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A snowboard brake comprising: double-end steering wheel (1), pivot (2), support frame (3) and braking tool (4), double-end steering wheel (1) with pivot (2) are connected, pivot (2) tip pass pivot base (5) and with support frame (3) are connected, the one end at the ski is fixed in pivot base (5), the tip of support frame (3) with braking tool (4) rotate to be connected support frame (3) with still be equipped with brake spring (6) between braking tool (4).

2. A ski brake as claimed in claim 1, characterised in that the support (3) is provided with a stop (7) for limiting the position of the brake bit (4).

3. A ski brake, as claimed in claim 1, characterised in that a rotational bearing (8) is provided between the shaft (2) and the shaft mount (5).

4. A braking device as claimed in claim 1, characterized in that the snowboard is provided with a circuit integrated box (9), the circuit integrated box (9) is provided with a control circuit board, and the control circuit board is wirelessly communicated with the communication module on the ski pole.

5. A ski brake as claimed in claim 1, characterised in that the support frame (3), brake bit (4) and spindle base (5) are all of 7050 aircraft aluminium.