CN201130457Y

CN201130457Y - Simple pendulum experimental machine

Info

Publication number: CN201130457Y
Application number: CNU2007201877590U
Authority: CN
Inventors: 李振先
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-12-24
Filing date: 2007-12-24
Publication date: 2008-10-08
Anticipated expiration: 2017-12-24

Abstract

The utility model relates to a simple pendulum experiment device for the simple pendulum experiment of high school physical education, belonging to the technical field of the teaching appliances , which is mainly characterized in that the simple pendulum uses a cycloid fixed link, and the vertical rack of the support is additionally provided with a pendulum length positioning bar, the base is also provided with a pendulum ball guide discharging gate and a photoelectric counter, and an electronic timer; the pendulum experiment device has the functions of the fixing and replacing the simple pendulum, positioning the pendulum length, directionally releasing the pendulum ball, changing and regulating the swinging angle amplitude, and counting, timing and automatically synchronizing the whole vibration of the simple pendulum. As a formal modern new demonstration device of the simple pendulum experiment, the simple pendulum experiment device has the advantages of fast and easy configuration, standardized and reliable operation, and accurate determination of experimental data, thus increasing laboratory results.

Description

Single pendulum experimenter

Technical field

The utility model belongs to the instruments used for education field, relates to senior high school period physics teaching experiment with simple pendulum instrument, is specifically related to a kind of single pendulum experimenter.

Background technology

In present stage regular senior secondary school's physics teaching course, when doing experiment with simple pendulum, adopt iron stand to fasten usually to hang the single pendulum ball and do experiment with simple pendulum, defective such as it is long to exist setup time, is difficult for accurately operating, and the data determination error is big.

The utility model content

The designer is in being engaged in the senior middle school physics teaching practice for many years, find that traditional experiment with simple pendulum instrument exists above-mentioned open defect, through constantly groping, improve repeatedly, purpose is to provide a kind of single pendulum experimenter, can be simple and quick, realize that experiment with simple pendulum vibrates the counting timing entirely and carries out synchronously automatically, experimental data is measured precision and is improved.

Technical solution adopted in the utility model is a kind of single pendulum experimenter of design, its structure comprises: single pendulum, support, base, single pendulum adopts in cycloid system and hangs end connection cycloid fixed bar, also on the perpendicular frame of support, the pendulum length backstay is set, guiding releasing of brake and photoelectric counter, electronic timer and power switch are set on base, the spare part box is set in base.

Wherein, the cycloid fixed bar be used for doing in period of single pendulum and the test of swing ball relationship between quality can be quickly and easily fixing single pendulum or change the single pendulum of different quality; The pendulum length backstay adopts card slot type pendulum length backstay, one end fastening end can be fastened on the perpendicular frame of a side of support, the other end can be supported on the perpendicular frame of opposite side, offer the cycloid draw-in groove at the middle part of pendulum length backstay, the cycloid casting die is set on draw-in groove, be used for making things convenient for the pendulum length positioning action, do the relation test of simple pendulum oscillation cycle and pendulum length accurately and quickly; Described guiding releasing of brake adopts the swing ball releasing of brake is set in orientating box, the bottom of orientating box be arranged on the slide rail that support is flapped toward on the wing base and fasten, swing ball can be drawn when being used for doing the test of simple pendulum oscillation cycle and amplitude relation and be placed in the guiding releasing of brake, accurately discharge by orientating box standard swing ball is directed, can also promote orientating box along the slide rail displacement and in conjunction with transferring the cycloid fixed bar, be used for changing pivot angle, regulate amplitude; The photogate of described photoelectric counter is laid on the base that swing ball passes through, and cooperates with electronic timer to be used for receiving synchronously number of times and the time that the meter single pendulum is finished full vibration.

The utility model is owing to take above technical scheme and measure, designed single pendulum experimenter collection single pendulum is fixed, replacing, pendulum length location, swing ball is directed to be discharged, the pivot angle amplitude changes, and single pendulum vibrates the counting timing entirely and multiple function such as carries out automatically synchronously, and it is simple and efficient to have a configuration, working specification is reliable, experimental data is measured accurately, and remarkable advantages such as experiment effect raising are done the experiment with simple pendulum teaching for vast senior high school period a kind of regular modern lecture experiment instrument is provided.

Description of drawings

Fig. 1 represents the general structure synoptic diagram of the utility model single pendulum experimenter;

Fig. 2 represents the single pendulum structural representation of the utility model single pendulum experimenter;

Fig. 3 represents wherein pendulum length backstay structural representation of the utility model single pendulum experimenter;

Fig. 4 represents the utility model single pendulum experimenter releasing of brake structural representation that wherein leads.

Embodiment

The structure drawings and Examples further specify the concrete structure of the utility model single pendulum experimenter, and its feature and advantage are clearer.

The experimental example of the utility model single pendulum experimenter, referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, its structure comprises: base 1, single pendulum 2, support 3, cycloid fixed bar 4, pendulum length backstay 5, guiding releasing of brake 6, photoelectric counter 7, electronic timer 8, power switch 9.Wherein, cycloid fixed bar 4 is (referring to Fig. 2, end Fig. 1) adopts screw rod, big nut, set nut as fastening end 4.1, the other end connects single pendulum cycloid system and hangs end, cycloid fixed bar 4 is connected to become fixedly rod-type single pendulum with single pendulum 2, during as the irrelevant test of checking simple pendulum oscillation cycle and swing ball quality, the fastening end of steel swing ball or copper swing ball cycloid fixed bar 4 is fastened in the fastener hole in the middle part of the crossbearer of support 3; When utilizing single pendulum to measure the acceleration of gravity experiment, under the sagging naturally situation of the static cycloid of swing ball, with meter ruler measure cycloid and fixed bar tie point to cycloid and swing ball sphere joint length as length L; Pendulum length backstay 5 adopts fastening card slot type pendulum length backstay (referring to Fig. 3, Fig. 1), one end adopts screw rod, big nut, set nut as fastening end 5.1, offer cycloid draw-in groove 5.2 at the middle part, elastic pressuring plate 5.3 is set as the cycloid casting die on draw-in groove 5.2, as the checking simple pendulum oscillation cycle during, the fastening end laterally is fastened in the fastener hole at the perpendicular frame of side middle part of support 3, in the jack in the middle part of laterally inserted another the perpendicular frame of the other end with test that the square root of pendulum length is directly proportional; Guiding releasing of brake 6 is (referring to Fig. 4, Fig. 1) employing is provided with swing ball releasing of brake 6.2 in orientating box 6.1, flashboard 6.21 is half garden shape, the base plate of orientating box 6.1 engages with slide rail 1.1 on the base 1, when doing the simple pendulum oscillation test, when spanner 6.22 tips are pulled 180 °, drive flashboard 6.21 is in swing ball and is parked in swing ball releasing of brake 6.2 internal states, when spanner 6.22 tips are pulled to 0 °, drive flashboard 6.21 and be in the swing ball release conditions, as checking simple pendulum oscillation cycle and the irrelevant test of amplitude, measure the simple pendulum oscillation period T ₂The time, guiding releasing of brake 6 is passed specific bit, can change the swing ball pivot angle, regulate the simple pendulum oscillation amplitude; Photoelectric counter 7 adopts commercially available photoelectric counter, and photogate 7.1 is laid on the base 1 of 3 liang of footing inboards of support; Electronic timer 8 adopts commercially available electronic timer, and reset button, start button, power switch 9 all are arranged on the side plate of base 1; Spare part box 1.2 is set in the rear side of base 1, deposits the acknowledgment copies of displacing such as single pendulum.

Claims

1, a kind of single pendulum experimenter, comprise single pendulum, support, base, it is characterized in that the single pendulum cycloid be to hang end to connect the cycloid fixed bar, also on the perpendicular frame of support, the pendulum length backstay is set, the guiding releasing of brake is set on base, photoelectric counter, electronic timer and power switch are provided with the spare part box in base.

2, single pendulum experimenter as claimed in claim 1, it is characterized in that described pendulum length backstay adopts card slot type pendulum length backstay, an end fastening end can be fastened on the perpendicular frame of support one side, and the other end can be supported on the perpendicular frame of opposite side, offer the cycloid draw-in groove at the middle part, the cycloid casting die is set on draw-in groove.

3, single pendulum experimenter as claimed in claim 1 is characterized in that described guiding releasing of brake adopts the swing ball releasing of brake is set in orientating box, and the orientating box bottom engages with slide rail on the base.