CN87209856U - Automatic spring sun tracker - Google Patents

Abstract

The utility model discloses a double-shaft automatic spring sun tracker making use of the solar energy. Under the condition of having no other energy consumption and low cost, the tracker realizing high tracking precision, simple operation, strong wind interference resistance and large weight bearing force conducts the tracking of the hour angle and the declination of the sun. The utility model uses a spring as an energy and power storing element, uses a small clock as a main control element, uses a small torsion spring and an adjusting block as auxiliary control elements and uses the principle of the lever to amplify the force moment, finally making the bracket of the lighting device rotate in the angular speed of 15 DEG / hour so as to realize the tracking of the hour angle of the sun, and the automatic spring sun tracker uses the engaging position of the manual adjusting block worm screw on a worm fan to realize the tracking of the declination. Cc.

Description

Automatic spring sun tracker

The utility model belongs to a kind of automatic sun tracing device that utilizes solar energy.

Existing automatic sun tracing device has uniaxiality tracking and double-axis tracking.The single shaft autotracker as " screw pair---hydraulic pressure---water clock " device, can realize that 15 °/hour hour angle was followed the tracks of day.But, to relate to the adjustment flow velocity during use because of its angular speed is subjected to the decision of the flow stream velocity at water clock vessel port place---angular speed and handle water clock liquid etc., operation is trouble, and load capacity and tracking accuracy are also relatively poor simultaneously; Because of not realizing the declination tracking, in addition, the motive power of angle tracking is the weight of lighting device and main shaft at that time, so relatively poor to the adaptability of season and geographic latitude in addition.No matter existing double-shaft auto-tracking device is the computer program-control formula, or sensor type and shade tracking mode etc., follow the tracks of though can realize hour angle and declination, and the cost height, and need consumed power.Simultaneously, except that the program control type tracking means, many light-to-current inversions that caused by irradiation and the shading of the sun of remaining tracking signal and producing are controlled servo-drive system then to follow the tracks of, thereby are the discontinuous manner tracking, and tracking accuracy is affected.

Task of the present utility model, provide a kind of consumption under other energy and the prerequisite with low cost, realize that tracking accuracy is higher, easy and simple to handle, can be in extensive area to hour angle and declination double-axis tracking, and can bear than heavy load and the strong automatic sun tracing device of wind resistance interference performance.

Implementation method of the present utility model and principle are: the time angle tracking be that deformation with spring is as energy storage and dynamical element, big torsion spring, little torsion spring and adjustment piece are respectively as the device that produces active moment and control moment, by the master, pay sprocket wheel and master, pay the transmission one by one to power such as chain, utilize lever principle, make head sprocket and pay sprocket wheel with the speed rotation, pay the rotating speed of sprocket wheel, be to control with the gear that adds after the commercially available minor clock repacking, as long as make pair sprocket wheel and clock external gear that certain rotating ratio be arranged, and make and pay sprocket wheel the power-assist power of the resistance of clock external gear and little torsion spring etc. is adapted, just can make the angular speed of pair sprocket wheel accurately reach 15 °/hour.It is difference according to the day ordinal number that declination is followed the tracks of, and by the position of engagement of manual adjustments worm screw on the snail fan, carriage and contained lighting device was changeed around declination axis through one day or a few days once realize.

Fig. 1 and Fig. 2 are one of embodiment of the present utility model, and are respectively hour angle and declination following principle figure, and be modern as example, and automatic following principle is described.

Guide rail among Fig. 1 (8) is divided into two sections to lever (7).The righting moment of big torsion spring (5) acts on the carriage (4), passing to the head pulley (3) and the head sprocket (2) that are fixed as one with it through hour angle axle (6) reaches on the main chain bar (1) that meshes with head sprocket, two plush coppers (21) that make the lever (7) that is connected as a single entity with main chain bar (1) are with plane contact presses against track (8), and produce clockwise turning moment, simultaneously owing to the left thrust of restraint spring (9) to lever (7), also make the turning moment that plush copper (21) locates strengthen that (diagram restraint spring is a stage clip, if extension spring should place the lever left side), can not move so make lever (7) be subjected to the braking of guide rail (8).Guide rail and guide rod penetrate respectively in the respective aperture on the lever.The righting moment that produces because of deformation when the little torsion spring (15) on axostylus axostyle (13), promote to pay pulley (14), through axostylus axostyle (13) power transmission, make the coaxial gear (12) of paying pulley be subjected to the moment of the direction of arrow as shown, this moment produces power-assist to the clock external gear (16) of shaft gear (12) engagement together, and then the coaxial gear (17) of paying sprocket wheel (18) of promotion and latter's engagement, a pair sprocket wheel (18) is stirred paid a chain (19), lower end at lever (7) produces the power that moves right, this power produces counterclockwise turning moment to plush copper (21), and is reverse with the moment that big torsion spring (5) produces.The distance that cause pair chain (19) is located to plush copper (21) arrives the distance of plush copper greater than main chain bar (1), so pay the moment that small power produced at chain place, can offset the moment of the powerful power in main chain bar place, so lever (7) can move right, so head sprocket and hour angle axle just rotate with speed with pair sprocket wheel.Be subjected to the control of clock external gear owing to pay sprocket wheel, so can get 15 °/hour at the uniform velocity and accurately rotation.In addition because of the master, pay the sprocket wheel pitch diameter and equate, so contained carriage and lighting device are also driven with 15 °/hour rotating speed on the hour angle axle, thereby the purpose of angle tracking when having realized.After a week in the future, carriage and lighting device are wanted reposition, can turn back carriage (4) to get final product along the opposite direction of diagram arrow.When turning back, head pulley is paid the backward rotation of pulley (14) along arrow by flexible member (11) pulling, and the little torsion spring of writing that surpasses all the others, and by coaxial gear (12) rolling-in clock clockwork spring again through gear (17) and coaxial sprocket wheel (18), makes the reduction that moves to left of a pair chain.Main, a pair pulley can be a wholecircle or fan-shaped.The adjustment piece (20) of little torsion spring is fixed on to be paid on the pulley (14).

Modern is example explanation declination following principle with Fig. 2.One end of carriage (4) is supported on declination axis (24) and goes up also and can rotate around this axle.Snail fan (23) is fixed on the hour angle axle (6), worm screw (22) and the engagement of snail fan, and the other end of support rack (4).Worm screw is risen or fall by manual rotation, carriage is rotated, around declination axis (24) to follow the tracks of the variation of solar declination.Fig. 1 represents same part with the identical piece number among Fig. 2.

Major advantage of the present utility model is: 1. with spring as energy storage and dynamical element, pull one lower outsidely except every daily external force, do not need other energy consumptions. 2. this apparatus structure is simple, does not have again special material and element, thus with low cost, be convenient to production and sales. 3. tracking accuracy is higher, and easy and simple to handle. 4. because being double-axis tracking, and not take the weight of lighting device and carriage as motive power, so strong to season and Local Adaptation, be convenient to be extensive use of. 5. as long as according to factors such as lighting device weight and appearance and sizes, calculate cleverly and mate torsion spring, just can bear the greatly lighting device of weight and arbitrary shape, and can resist the powerful air-dry frequent variations of disturbing and adapting to load. Thereby the utility model can extensively popularize aspect the solar energy utilizing of industry, national defence, family etc.

Claims (1)

1, a kind of twin shaft automatic sun tracing device of being made up of lighting device carriage, hour angle axle and declination axis is characterized in that:

A. angle tracking system is by the main force's square transmission device time, control moment transmission device and servicing unit thereof constitute, main force's square transmission device comprises big torsion spring, head pulley, head sprocket, main chain bar and lever, head pulley and head sprocket are fixed on the hour angle axle, head sprocket and main chain bar are connected with a joggle, the main chain bar is fixed on an end of lever, two plush coppers are arranged on the lever, the control moment transmission device comprises little torsion spring, adjust piece, pay pulley and rotating shaft and coaxial gear, the clock external gear, pay sprocket wheel and coaxial gear thereof, pay chain, pay between coaxial gear of pulley and clock external gear and pair coaxial gear of sprocket wheel all with gears engaged, pay the other end that chain is fixed on lever, the time angle tracking system servicing unit comprise guide rail, guide rod, restraint spring and flexible member, the restraint spring can be stage clip or extension spring, guide rail and guide rod penetrate respectively in the respective aperture on the lever, lever contacts with guide level by two plush coppers on it, pay chain arrives plush copper greater than the main chain bar to the distance of plush copper distance, but head pulley and pair pulley wholecircle or fan-shaped, main, pay pulley and connect, a head sprocket and a pair sprocket wheel joint garden equal diameters with flexible member;

B. the declination tracking system is made up of intermeshing worm screw, snail fan, and the snail fan is fixed on the hour angle axle.

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