CN112704864B - Athlete ejection device for ice and snow sports - Google Patents

Abstract

The invention discloses an athlete ejection device for ice and snow sports, which comprises a driving motor, an energy accumulator, a steering wheel, a driving wheel, an adjusting wheel, a traction rope, a pulley, a laser velocimeter, a locking and releasing mechanism, a buffer, an athlete push frame, a movable support and a measurement control system. Two guide rails are installed to the upper strata symmetry of moving movable support, directive wheel and drive wheel respectively fixed mounting at moving movable support's both ends, drive motor and being connected of drive wheel, the coaster is on two guide rails via the pulley suspension of its both sides, the haulage rope both ends are connected respectively at the coaster both ends, and form a closed loop around directive wheel and drive wheel, in the below of guide rail, a plurality of regulating wheels interval ground range sets up the lower floor at moving movable support, sportsman pushes away a detachably and installs on the coaster, and stretch out side at moving movable support with the mode of cantilever beam. The invention can provide a certain initial speed for athletes engaged in ice and snow sports, help the athletes save physical strength and improve training efficiency.

Description

An athlete ejection device for ice and snow sports

technical field

The invention relates to an electric ejection device, which is mainly used for assisted ejection of athletes in ice and snow sports, and belongs to the technical field of sports training equipment design.

Background technique

In ice and snow sports, such as speed skating, cornering technology is a very important and difficult technical link. Cornering technology plays a vital role in improving the performance of athletes. Athletes need to specialize in cornering technology. train. However, in the previous curve training process, the athlete needed to accelerate from the speed of 0 on the straight road to ensure that the specified speed of entering the curve was reached before entering the curve. As a result, the efficiency of special training in cornering technology is not high. For example, in freestyle skiing aerial skills, athletes need to slide down a high-assist landslide of more than ten meters. After reaching a predetermined speed, they take off on the platform and demonstrate various technical movements in the air. In the past training, this sport has very strict requirements on training venues, and it is necessary to build up to the standard of the slopes and ski resorts. However, the number of ski resorts that meet the standard in China is very limited, and the scarcity of venue resources has resulted in the lack of training time for athletes. ensure.

If the ejection device can be applied to daily training, it can save the athletes' physical strength and single training time, improve the training efficiency and training quality, and also reduce the impact of venue restrictions on training.

SUMMARY OF THE INVENTION

The invention provides an athlete ejection device for ice and snow sports, which can be applied to sports (such as roller skating, speed skating, skiing, etc.) on smooth and flat fields (such as ice rinks, ski fields, etc.) The ground is ejected at a certain speed within a certain distance.

The athlete's ejection device for ice and snow sports of the present invention includes a driving motor, an accumulator, a steering wheel, a driving wheel, a regulating wheel, a traction rope, a pulley, a laser speedometer, a locking and releasing mechanism, a buffer, an athlete's push frame, a mobile Bracket and measurement control system; two guide rails are symmetrically installed on the upper layer of the movable bracket, the steering wheel and the driving wheel are respectively fixed and installed on both ends of the movable bracket, and the driving wheel and the driving motor are connected with each other. The accumulator is connected to the drive motor, the pulley is suspended on two guide rails via the pulleys on both sides of the pulley, the rear end of the pulley is connected to the locking release mechanism, and the guide rails are installed in the middle In the laser velocimeter, the buffer is installed at the front end of the guide rail, and the two ends of the traction rope are respectively connected to the two ends of the pulley and form a closed loop around the steering wheel and the driving wheel. Below, a plurality of the adjusting wheels are arranged at intervals on the lower layer of the moving bracket for adjusting the tightness of the traction rope. The athlete push frame is detachably mounted on the pulley and cantilevered The beams protrude from the side of the moving bracket, and are used for contacting with the athletes standing on the snow, which are the force transmission parts between the whole set of devices and the athletes.

Preferably, a measurement control system is also included, the adjustment wheel includes a sliding wheel, a pressure sensor and a screw jack, a tension sensor is installed on the traction rope, and the measurement control system is based on the data of the pressure sensor and each tension sensor, The screw jack is controlled to adjust the tension state of the traction rope, and the drive motor is controlled to operate.

Preferably, the athlete push frame structure can be automatically adjusted according to the height of the athlete and the type of exercise.

Preferably, there are three traction ropes, and each traction rope is provided with a tension sensor, which is connected to the measurement control system and can display the tension value of each traction rope in real time.

Preferably, the adjusting wheels are arranged in five groups at a certain interval in the moving direction of the pulley, and are fixedly mounted on the moving bracket and located below the traction rope.

Preferably, the movable bracket adopts a segmented modular design, and a universal wheel and a fixed outrigger are arranged below. The universal wheel can meet the needs of moving the whole set of devices. , to meet the fixed requirements with the ground of the site.

Compared with the prior art, the present invention has the following advantages:

(1) The various structural forms of the athlete's push frame can be automatically adjusted, and the ejection technology is combined with the athlete, which can be applied to various types of sports;

(2) The tightness of the traction rope can be adjusted automatically, which saves the work of inspection and maintenance and improves the safety of the whole system.

(3) The whole set of device is easy to move and disassemble, and can adapt to the use requirements of different types of venues.

Description of drawings

Fig. 1 is the structural principle diagram of the ejection device of the present invention;

Fig. 2 is the structural layout diagram of the ejection device of the present invention;

Fig. 3 is the sectional view of the pulley end face of the ejection device of the present invention;

FIG. 4 is a schematic view of the structure of the adjusting wheel of the ejection device of the present invention.

Detailed ways

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The direction of the arrow in FIG. 2 is the ejection direction, and in the present invention, the ejection direction of the athlete is the front.

As shown in Figures 1, 2, 3, and 4, the ejection device of the present invention includes a driving wheel 1, a traction rope 2, a pulley 3, a tension sensor 4, a regulating wheel 5, a steering wheel 6, a driving motor 7, an accumulator 8, a lock Tight release mechanism 9, athlete push frame 10, training field 11, laser velocimeter 12, buffer 13, moving bracket 14, guide rail 15, sliding wheel 16, pressure sensor 17, screw jack 18, etc.

The driving wheel 1 and the steering wheel 6 are fixedly installed at both ends of the moving bracket 14 respectively. The traction rope 2 forms a loop around the driving wheel 1 and the steering wheel 6. The traction rope 2 is provided with a tension sensor 4, and the tension sensor 4 can follow the traction. The rope 2 moves to realize real-time monitoring of the pulling force of the traction rope 2. Both ends of the traction rope 2 are respectively connected to the front and rear interfaces of the pulley 3 . Two guide rails 15 are symmetrically installed on the upper layer of the moving bracket 14 to provide guidance for the movement of the pulley 3 . The rear end of the pulley 3 is connected with a locking and releasing mechanism 9 , and the locking and releasing mechanism 9 is used to limit or release the position of the pulley 3 . A laser velocimeter 12 is installed in the middle of the guide rail 15 , and a buffer 13 is installed at the front end of the guide rail 15 . The athlete's push frame 10 is installed on the upper surface of the pulley 3, and the structure of the athlete's push frame can be automatically adjusted according to different players' feelings and different types of sports when in use. The adjusting wheel 5 is installed on the lower layer of the moving bracket 14. The adjusting wheel 5 is arranged as shown in FIG. 1. The adjusting wheel 5 includes a sliding wheel 16, a pressure sensor 17 and a screw lift 18. The screw lift 18 can control the sliding wheel 16 to move up and down, and can be adjusted The tension state of the traction rope 2, the pressure sensor 17 can monitor the force of the traction rope 2 on the adjusting wheel 5 in real time. The driving motor 7 is connected with the driving wheel 1, and the output speed and torque are provided by the driving motor 7, which drives the driving wheel 1 to rotate. Due to the friction between the traction rope 2 and the driving wheel 1, the traction rope 2 and the pulley 3 are driven to move with the driving wheel. 1 Synchronized movement. The accumulator 8 is connected with the driving motor 7, and the accumulator 8 is used to absorb the back electromotive force generated by the motor deceleration, and the back electromotive force is stored and dissipated by the accumulator 8 during braking.

When the whole device is used, the frictional force between the traction rope 2 and the driving wheel 1 needs to be kept at a certain value, so it is necessary to ensure that the tightness of the traction rope 2 does not change. The values collected by the tension sensor 4 on the traction rope 2 and the pressure sensor 17 on the adjustment wheel 5 jointly determine the tightness of the traction rope 2 at this moment. When the values of the tension sensor 4 and the pressure sensor 17 deviate from the preset value, the measurement control The system controls the screw jack 18 in the adjusting wheel 5 to ascend or descend, and can re-tighten the traction rope 2 to a preset state.

Steps to use this device:

1. First, set parameters such as ejection speed in the measurement control system;

2. The athlete stands in front of the athlete push frame 10, and makes a corresponding starting posture according to the requirements of different training items;

3. Turn on the drive motor 7, and the traction rope 2 and the pulley 3 are preloaded under the action of the driving force;

4. Open the locking release mechanism 9, the driving motor 7 starts quickly and drives the driving wheel 1 to rotate, the driving wheel 1 then drives the traction rope 2 and the pulley 3 on the traction rope 2 to accelerate the movement, and the pulley 3 drives the athlete to push the frame 10 together with the athlete. accelerate;

5. When the required movement speed for training is reached, the driving motor 7 decelerates sharply to generate a back electromotive force and stores it in the accumulator 8, the driving wheel 1 then quickly decelerates and drives the pulley 3 to decelerate and brake, and the athlete continues to move forward and enter the training under the action of inertia Field, the athlete's ejection process is over.

6. The ejection device resets the system, and prepares for the next ejection after the reset is completed.

The content not described in detail in the specification of the present invention belongs to the well-known technology of those skilled in the art.

Claims (4)

1. An athlete ejection device for ice and snow sports, which is characterized in that: the device comprises a driving motor, an energy accumulator, a steering wheel, a driving wheel, an adjusting wheel, a traction rope, a pulley, a laser velocimeter, a locking and releasing mechanism, a buffer, a sportsman push frame, a movable support and a measurement control system; the upper layer of the movable support is symmetrically provided with two guide rails, the steering wheel and the driving wheel are respectively and fixedly arranged at two end parts of the movable support, the driving wheel is connected with the driving motor, the energy accumulator is connected with the driving motor, the pulley is suspended on the two guide rails through pulleys at two sides of the pulley, the rear end of the pulley is connected with the locking and releasing mechanism, the laser velocimeter is arranged in the middle of the guide rails, the buffer is arranged at the front end of the guide rails, two ends of the traction rope are respectively connected at two ends of the pulley and form a closed loop around the steering wheel and the driving wheel, a plurality of adjusting wheels are arranged at the lower layer of the movable support at intervals under the guide rails and used for adjusting the tightness state of the traction rope, the athlete push frame is detachably arranged on the pulley and extends out of the side part of the movable support in a cantilever beam manner, the force transmission component is used for contacting with an athlete standing on the snow, and is a force transmission component between the whole device and the athlete;

the measuring and controlling system controls the spiral elevator to adjust the tightness state of the traction rope according to data of the pressure sensors and the tension sensors and controls the driving motor to operate;

the three traction ropes are provided, each traction rope is provided with a tension sensor, and the tension sensors are connected to a measurement control system and can display the tension value of each traction rope in real time.

2. An athlete ejection device for ice and snow sports, according to claim 1, wherein: the athlete pushing frame structure can be automatically adjusted according to the height and the motion type of the athlete.

3. An athlete ejection device for ice and snow sports, according to claim 1, wherein: five groups of adjusting wheels are arranged in the movement direction of the pulley at certain intervals, and are fixedly installed on the movable support and positioned below the traction rope.

4. An athlete ejection device for ice and snow sports, according to claim 1, wherein: the movable support adopts a segmented modular design, universal wheels and fixed support legs are arranged below the movable support, the universal wheels can meet the requirement for moving the whole device, and the fixed support legs are designed adaptively according to the use site of a snow field and an ice rink, so that the fixed requirement of the ground of the site is met.

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