CN217955311U

CN217955311U - Simple pendulum motion law demonstrator

Info

Publication number: CN217955311U
Application number: CN202221995481.0U
Authority: CN
Inventors: 袁挺; 鲁科军
Original assignee: Yuyao Zhida Education Equipment Co ltd
Current assignee: Yuyao Zhida Education Equipment Co ltd
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2022-12-02
Anticipated expiration: 2032-07-26

Abstract

The utility model discloses a simple pendulum motion law demonstrator, which comprises a base, wherein a vertical rod is installed at the top end of the base, a cantilever beam is fixed at the top of the vertical rod and used for installing a silica gel plug and a cotton rope, a jack is arranged on the cantilever beam, the silica gel plug is embedded in the jack to realize the spacing and installation of cotton threads, cotton threads penetrate through the silica gel plug, and a pendulum ball is connected at the bottom end of the cotton threads; the vertical rod is also provided with a measuring mechanism for counting the angle and the times of the simple pendulum, and the measuring mechanism comprises an angle scale II, a photoelectric door and an angle scale I which are sequentially arranged from top to bottom; through the utility model discloses a design can guarantee that the hanging point can not slide in the demonstration to reach the purpose of hanging the simple pendulum, also can conveniently change the pendulum length through upper and lower acting line hard simultaneously, it is very convenient to operate, has perfected not enough in the current structure.

Description

Simple pendulum motion law demonstrator

Technical Field

The utility model belongs to the technical field of the demonstration ware, concretely relates to simple pendulum motion law demonstration ware.

Background

The simple pendulum is a device capable of generating reciprocating swing, one end of a thin and flexible rope without a heavy thin rod or inextensible is suspended at a certain point in a gravity field, and the other end of the thin and flexible rope is fixedly connected with a heavy small ball, so that the simple pendulum is formed. If the ball is swung only in a vertical plane, it is a planar pendulum, and if the ball is swung only in a vertical plane, it is a spherical pendulum.

In the demonstration of simple pendulum movement, the traditional method is a suspension method by knotting, clipping and the like, but the method has the following problems:

1. the suspension point is not fixed, so that the pendulum is not an ideal simple pendulum capable of performing harmonic vibration;

2. the change of the pendulum length is troublesome and inconvenient;

the above two problems cause relatively large errors and difficulties in the measurement of the pendulum length and the measurement of the relevant physical quantity, and thus there is room for improvement.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a simple pendulum motion law demonstrator to there is the hanging point unfixed in the equipment that current adopted in the simple pendulum motion demonstration of proposing among the solution above-mentioned background art, and it is troublesome that the pendulum length changes, has the problem of great error.

In order to achieve the above object, the utility model provides a following technical scheme: the single pendulum motion law demonstrator comprises a base, wherein a vertical upright rod is installed at the top end of the base, a cantilever beam is fixed at the top of the upright rod and used for installing a silica gel plug and a cotton rope, an insertion hole is formed in the cantilever beam, the silica gel plug is embedded in the insertion hole to realize the limiting and installation of cotton threads, the cotton threads penetrate through the silica gel plug, and a pendulum ball is connected to the bottom end of the cotton threads; the vertical rod is further provided with a measuring mechanism for counting the angle and the frequency of the simple pendulum, and the measuring mechanism comprises an angle scale II, a photoelectric door and an angle scale I which are sequentially arranged from top to bottom.

Preferably, the angle scale II and the angle scale I are located on the same vertical plane, so that the installation is convenient, the angle scale II and the pendulum ball cannot collide with each other, and a space exists between the pendulum ball and the angle scale II.

Preferably, the cross section of the photoelectric door is of an inverted U shape, so that a cotton thread can be conveniently inserted into the photoelectric door and penetrates through the inner side of the photoelectric door.

Preferably, the silica gel stopper is in an inverted frustum shape, wherein the diameter of the minimum position of the silica gel stopper is smaller than the inner diameter of the jack, and the diameter of the maximum position of the silica gel stopper is larger than the inner diameter of the jack, so that tight installation is realized.

Preferably, the jack is provided with a plurality ofly, can adjust the position according to the demand, every the silica gel stopper corresponds single jack.

Preferably, the vertical rod is positioned at the midpoint of the top of the base, so that the supporting stability is ensured, and the height of the vertical rod is greater than the length of the cotton threads in a vertical state.

Preferably, pole setting and cantilever beam are mutually perpendicular form, demonstration that can be better and make things convenient for the installation of earlier stage, pole setting and cantilever beam pass through bolt fixed connection.

Compared with the prior art, the beneficial effects of the utility model are that:

through the utility model discloses a design can guarantee that the hanging point can not slide in the demonstration to reach the purpose of hanging the simple pendulum, also can conveniently change the pendulum length through upper and lower acting line hard simultaneously, it is very convenient to operate, has perfected not enough in the current structure.

Drawings

Fig. 1 is a front view of the present invention;

fig. 2 is a side view of the present invention;

fig. 3 is a cross-sectional view of the connection between the cantilever beam and the silica gel plug.

In the figure: 1. erecting a rod; 2. cotton threads; 3. a photogate; 4. a base; 5. a first angle scale; 6. a second angle scale; 7. placing a ball; 8. a cantilever beam; 9. a jack; 10. and (5) a silica gel plug.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a technical solution: the single pendulum motion law demonstrator comprises a base 4, wherein a vertical upright rod 1 is installed at the top end of the base 4, a cantilever beam 8 is fixed at the top of the upright rod 1, an insertion hole 9 is formed in the cantilever beam 8, a silica gel plug 10 is embedded in the insertion hole 9, a cotton thread 2 penetrates through the silica gel plug 10, the pendulum length can be conveniently changed by forcibly drawing the thread up and down, the operation is very convenient, the defects in the existing structure are overcome, and a pendulum ball 7 is connected to the bottom end of the cotton thread 2; the upright pole 1 is also provided with a measuring mechanism, the measuring mechanism comprises a second angle scale 6, a photoelectric door 3 and a first angle scale 5 which are sequentially arranged from top to bottom, the second angle scale 6 and the first angle scale 5 are positioned on the same vertical plane to avoid collision with a swing ball 7, a space exists between the swing ball 7 and the second angle scale 6, the cross section of the photoelectric door 3 is in an inverted U shape, a cotton thread 2 penetrates through the inner side of the photoelectric door 3, a silica gel plug 10 is in an inverted circular truncated cone shape and can ensure that a suspension point cannot slide in demonstration, and therefore the purpose of hanging a single pendulum is achieved, the diameter of the smallest part of the silica gel plug 10 is smaller than the inner diameter of the jack 9, the diameter of the largest part of the silica gel plug 10 is larger than the inner diameter of the jack 9, the jacks 9 are provided with a plurality of jacks 9, and each silica gel plug 10 corresponds to one jack 9.

In this embodiment, preferably, the vertical rod 1 is located at the top midpoint of the base 4, the vertical rod 1 is greater than the cotton thread 2 in the vertical state, the cotton thread 2 is prevented from contacting the ground and being suspended, the vertical rod 1 and the cantilever beam 8 are perpendicular to each other, and the vertical rod 1 and the cantilever beam 8 are fixedly connected through a bolt to ensure the installation stability.

The utility model discloses a theory of operation and use flow: the utility model discloses when using, earlier pass silica gel stopper 10 with the one end of cotton thread 2, insert the inside of jack 9 with silica gel stopper 10 after that, in inserting, silica gel stopper 10 can offset with the inner wall of jack 9, and silica gel stopper 10 can the deformation compression, can enough realize the inseparable installation of silica gel stopper 10 and cantilever beam 8, also can realize the zonulae occludens of silica gel stopper 10 and cotton thread 2, with this purpose of realizing the fastening installation, in use, demonstrate the simple pendulum motion through beating angle scale two 6, and calculate the change of pendulum ball 7 swing angle through angle scale one 5, can also make statistics of the swing number of times of cotton thread 2 in the motion through photoelectric door 3 simultaneously.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Simple pendulum motion law demonstrator, its characterized in that: the device comprises a base (4), wherein a vertical upright rod (1) is installed at the top end of the base (4), a cantilever beam (8) is fixed at the top of the upright rod (1), an insertion hole (9) is formed in the cantilever beam (8), a silica gel plug (10) is embedded in the insertion hole (9), a cotton thread (2) penetrates through the silica gel plug (10), and a pendulum ball (7) is connected to the bottom end of the cotton thread (2); still install measuring mechanism on pole setting (1), this measuring mechanism includes angle scale two (6), photogate (3), angle scale one (5) by setting gradually from top to bottom.

2. The demonstrator of law of motion of simple pendulum of claim 1, characterized in that: the angle scale II (6) and the angle scale I (5) are located on the same vertical plane, and a space exists between the pendulum ball (7) and the angle scale II (6).

3. The demonstrator of law of motion of simple pendulums of claim 1, characterized in that: the cross section of the photoelectric door (3) is inverted U-shaped, and the cotton thread (2) penetrates through the inner side of the photoelectric door (3).

4. The demonstrator of law of motion of simple pendulum of claim 1, characterized in that: the silica gel plug (10) is in an inverted circular truncated cone shape, wherein the diameter of the minimum position of the silica gel plug (10) is smaller than the inner diameter of the insertion hole (9), and the diameter of the maximum position of the silica gel plug (10) is larger than the inner diameter of the insertion hole (9).

5. The demonstrator of law of motion of simple pendulum of claim 4, characterized in that: the jack (9) is provided with a plurality of, and every silica gel stopper (10) corresponds single jack (9).

6. The demonstrator of law of motion of simple pendulums of claim 1, characterized in that: the vertical rod (1) is positioned at the middle point of the top of the base (4), and the height of the vertical rod (1) is larger than the length of the cotton thread (2) in a vertical state.

7. The demonstrator of law of motion of simple pendulum of claim 1, characterized in that: the vertical rod (1) and the cantilever beam (8) are perpendicular to each other, and the vertical rod (1) and the cantilever beam (8) are fixedly connected through bolts.