CN216527695U - Balance force demonstration device for physics teaching - Google Patents

Abstract

The utility model relates to the technical field of balance force demonstration, in particular to a balance force demonstration device for physical teaching, which comprises a base and a pillar, wherein the upper end surface of the base is fixedly connected with the pillar, the outer side of the pillar is connected with a sliding sleeve in a sliding manner, the outer side of the sliding sleeve is fixedly connected with a sliding ring, the upper end surface of the sliding sleeve is fixedly connected with a test table, a test ball is placed in the center above the test table, the outer side of the test ball is provided with a pull rope through a hook, and weights are hung at the other end of the pull rope; according to the utility model, through the arrangement of the central limiting frame, the fixing plate and the spring dynamometer, two pull ropes are fixed on the left side and the right side of the test ball, then weights are added, the spring dynamometer can measure the pressure of the test ball on the top plate, then the pull ropes passing through the rear side are fixed on the rear side of the test ball, the weights in the same center are added, and at the moment, the numerical value of the spring dynamometer can be observed, contrast can be formed at the moment, so that students can conveniently understand the test ball, and the teaching quality is improved.

Description

Balance force demonstration device for physics teaching

Technical Field

The utility model relates to the technical field of balance force demonstration, in particular to a balance force demonstration device for physical teaching.

Background

The balance force is that several forces act on the same object, if the object is still or becomes in a static state or in a uniform linear motion state, or the resultant force is zero, the resultant force of the several forces is zero, so that the several force balances are described, the demonstration is that information is transmitted to other people through some modes and tools, the mode is a behavior mode of information transmission, and the process of things is displayed by utilizing experiments or objects and tools, so that people can know or understand the process.

The equilibrant teaching mode that traditional physical teaching used demonstrates the explanation on the blackboard through the mr, and it does not have the material object demonstration, and classmates 'can not understand completely, and some teachers still teach through presentation device simultaneously, but its presentation device is complicated, is unfavorable for classmates' understanding, consequently, provides an equilibrant presentation device for physical teaching to above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a balance force demonstration device for physics teaching, which aims to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a balanced force presentation device for physical teaching, includes base and pillar, base up end fixedly connected with pillar, pillar outside sliding connection has the slip cap, slip cap outside fixedly connected with slip ring, the last up end fixedly connected with test bench of slip cap, test ball has been placed to test bench top central authorities, the test ball outside is equipped with the stay cord through the couple, the weight has all been hung to the stay cord other end, the spacing frame of fixedly connected with central authorities around the test bench up end, the spacing frame of test bench outside fixedly connected with side, the test ball front side is equipped with the fixed plate, terminal surface and test bench fixed connection under the fixed plate, terminal surface fixedly connected with spring dynamometer before the fixed plate, spring dynamometer rear end fixedly connected with roof.

Preferably, the rear end face of the top plate is an arc surface, the top plate is located on the front side of the test ball, the number of the pull ropes is three, and the lengths of the pull ropes are consistent.

Preferably, central authorities spacing and the spacing quantity of side are three, and are three central authorities spacing is in the coplanar, and is three the spacing of side is in the coplanar, the angle between the central authorities spacing is 120, the angle between the spacing of side is 120, the inboard axle of central authorities spacing and the spacing of side all is the rotation setting.

Preferably, the left side and the right side of the strut are provided with grooves, rotating plates are arranged in the grooves, the outer sides of the rotating plates are rotatably connected with the connecting part of the strut, the left side and the right side of the sliding ring are fixedly connected with fixing plates, screws are arranged above the fixing plates, and the outer sides of the screws are spirally connected with the fixing plates and the rotating plates which are vertically distributed.

Preferably, the equal fixedly connected with leading truck in the spacing frame outside of central authorities, all be equipped with the stay cord in the leading truck, leading truck quantity is three, and leading truck evenly distributed is in the test bench top.

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

1. according to the utility model, through the arrangement of the test ball, the pull ropes, the central limiting frame, the side limiting frames, the weights, the fixing plate and the spring dynamometer, the two pull ropes are fixed on the left side and the right side of the test ball, then the weights are added, the spring dynamometer can measure the pressure of the test ball to the top plate, then the pull ropes passing through the rear side are fixed on the rear side of the test ball, the weights in the same center are added, and at the moment, the numerical value of the spring dynamometer is observed, and at the moment, comparison data can be formed, so that students can conveniently understand the test balls, and the teaching quality is improved;

2. according to the utility model, through the arranged base, the pillar, the rotating plate, the fixed plate, the sliding ring, the sliding sleeve and the experiment table, when the device is used, the fixed plate and the rotating plate are fixed through the screw, the height of the experiment table can be fixed at the moment, so that the device is convenient for students to observe, and when the device is not used, the device can be stored through rotating the screw and then sliding the sliding sleeve downwards, so that the occupied space of the device is saved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic structural view of the sliding sleeve of the present invention.

In the figure: 1-base, 2-pillar, 3-rotating plate, 4-fixing plate, 5-sliding ring, 6-sliding sleeve, 7-experiment table, 8-test ball, 9-pull rope, 10-central spacing frame, 11-side spacing frame, 12-weight, 13-fixing plate, 14-spring dynamometer, 15-top plate and 16-guide frame.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.

Referring to fig. 1-2, the present invention provides a technical solution:

a balance force demonstration device for physics teaching comprises a base 1 and a support column 2, the upper end face of the base 1 is fixedly connected with the support column 2, the outer side of the support column 2 is slidably connected with a sliding sleeve 6, the outer side of the sliding sleeve 6 is fixedly connected with a sliding ring 5, the upper end face of the sliding sleeve 6 is fixedly connected with a test table 7, a test ball 8 is placed in the center above the test table 7, the outer side of the test ball 8 is provided with a pull rope 9 through a hook, weights 12 are hung at the other end of the pull rope 9, a central limiting frame 10 is fixedly connected around the upper end face of the test table 7, a side limiting frame 11 is fixedly connected with the outer side of the test table 7, the front side of the test ball 8 is provided with a fixed plate 13, the lower end face of the fixed plate 13 is fixedly connected with the test table 7, the front end face of the fixed plate 13 is fixedly connected with a spring dynamometer 14, the spring dynamometer 14 can test numerical values, and then, data comparison is formed in two experiments, so that students can conveniently understand that the rear end face of the spring dynamometer 14 is fixedly connected with a top plate 15.

The rear end face of a top plate 15 is arranged in a cambered surface, the top plate 15 is positioned at the front side of a test ball 8, the number of pull ropes 9 is three, the length of the pull ropes 9 is consistent, the number of central limiting frames 10 and the number of side limiting frames 11 are three, the three central limiting frames 10 are positioned on the same plane, the three side limiting frames 11 are positioned on the same plane, the angle between the central limiting frames 10 is 120 degrees, the angle between the side limiting frames 11 is 120 degrees, the shafts at the inner sides of the central limiting frames 10 and the side limiting frames 11 are rotatably arranged, the friction force can be reduced, the accuracy of the experiment is ensured, grooves are formed in the left side and the right side of a support column 2, rotating plates 3 are arranged in the grooves, the outer sides of the rotating plates 3 are rotatably connected with the connecting parts of the support columns 2, fixing plates 4 are fixedly connected with the left side and the right side of a sliding ring 5, screws are arranged above the fixing plates 4, the outer sides of the screws are spirally connected with the fixing plates 4 and the rotating plates 3 which are vertically distributed, this kind of setting is convenient for fixed slip ring 5, the equal fixedly connected with leading truck 16 in the spacing 10 outside of central authorities, all is equipped with stay cord 9 in the leading truck 16, and leading truck 16 quantity is three, and leading truck 16 evenly distributed is in test bench 7 top, and the trend of stay cord 9 is guaranteed in this kind of setting, can guarantee two stay cords 9 during operations simultaneously, and test ball 8 can contact with roof 15, makes things convenient for spring dynamometer 14 to measure numerical value.

The working process is as follows: when the device is used, the device is placed on a flat ground, then the sliding ring 5 slides upwards, the rotating plate 3 rotates 90 degrees, the fixing plate 4 and the rotating plate 3 are fixed through screws, firstly, two pull ropes 9 are hung on the front side of a test ball 8, weights 12 with the same mass are placed below the pull ropes 9, at the moment, the test ball 8 extrudes a top plate 15, the top plate 15 extrudes a spring dynamometer 14, the spring dynamometer 14 displays the numerical value, the other pull rope 9 is hung on the rear side of the test ball 8, then the weights 12 with the same mass are placed, at the moment, the numerical value of the spring dynamometer 14 is observed again, at the moment, the numerical value of the spring dynamometer 14 is found to be 0, at the moment, the test ball 8 is static, the arranged central limiting frame 10 and the side limiting frames 11 are used for reducing the influence of the friction force on the demonstration device, and the balance force is demonstrated in a comparison mode, so that students can conveniently understand, more vivid and vivid, has good use value, and after the use of the device is completed, the screw is disassembled, then the rotating plate 3 is reset, and the sliding sleeve 6 slides downwards, so that the occupied space of the device can be effectively reduced.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a balanced force presentation device for physical teaching, includes base (1) and pillar (2), its characterized in that: the testing device is characterized in that a supporting column (2) is fixedly connected to the upper end face of a base (1), a sliding sleeve (6) is slidably connected to the outer side of the supporting column (2), a sliding ring (5) is fixedly connected to the outer side of the sliding sleeve (6), a test table (7) is fixedly connected to the upper end face of the sliding sleeve (6), a test ball (8) is placed in the center above the test table (7), a pull rope (9) is arranged on the outer side of the test ball (8) through a hook, weights (12) are hung at the other end of the pull rope (9), a central limiting frame (10) is fixedly connected to the periphery of the upper end face of the test table (7), a side limiting frame (11) is fixedly connected to the outer side of the test table (7), a fixing plate (13) is arranged on the front side of the test ball (8), the lower end face of the fixing plate (13) is fixedly connected with the test table (7), and a spring dynamometer (14) is fixedly connected to the front end face of the fixing plate (13), and the rear end face of the spring dynamometer (14) is fixedly connected with a top plate (15).

2. The balance force demonstration device for physics teaching according to claim 1, wherein: the rear end face of the top plate (15) is arranged in an arc surface mode, the top plate (15) is located on the front side of the test ball (8), the number of the pull ropes (9) is three, and the lengths of the pull ropes (9) are consistent.

3. The balance force demonstration device for physics teaching according to claim 1, wherein: spacing (10) of central authorities and the spacing (11) quantity of side are three, and are three spacing (10) of central authorities are in the coplanar, and are three spacing (11) of side are in the coplanar, the angle between spacing (10) of central authorities is 120, the angle between spacing (11) of side is 120, spacing (10) of central authorities and the inboard axle of spacing (11) of side all are the rotation setting.

4. The balance force demonstration device for physics teaching according to claim 1, wherein: the novel support is characterized in that grooves are formed in the left side and the right side of the support (2), rotating plates (3) are arranged in the grooves, the outer sides of the rotating plates (3) are rotatably connected with the connecting parts of the support (2), fixing plates (4) are fixedly connected to the left side and the right side of the sliding ring (5), screws are arranged above the fixing plates (4), and the fixing plates (4) and the rotating plates (3) which are distributed vertically are spirally connected to the outer sides of the screws.

5. The balance force demonstration device for physics teaching according to claim 1, wherein: the outer side of the central limiting frame (10) is fixedly connected with a guide frame (16), pull ropes (9) are arranged in the guide frame (16), the number of the guide frames (16) is three, and the guide frames (16) are uniformly distributed above the test bed (7).

Images