CN214538364U

CN214538364U - Novel torsional pendulum method moment of inertia test device

Info

Publication number: CN214538364U
Application number: CN202120568771.6U
Authority: CN
Inventors: 韩建邦; 席祥祥; 王涛; 周洋
Original assignee: Zhengzhou University of Science and Technology
Current assignee: Zhengzhou University of Science and Technology
Priority date: 2021-03-19
Filing date: 2021-03-19
Publication date: 2021-10-29
Anticipated expiration: 2031-03-19

Abstract

The utility model provides a novel torsional pendulum method rotational inertia testing device, which effectively solves the problems of troublesome operation of experimental facilities and increased fatigue degree of experimenters during carrying; the supporting seat is provided with an experimental device, the upper end four corners of supporting seat is threaded respectively and is provided with a balance screw rod, every on the balance screw rod respectively coaxial rotation installs the last pinch-off blades that are located the supporting seat below, every on the balance screw rod respectively coaxial arrangement have gliding lower pinch-off blades that just are located the last pinch-off blades below, every on the balance screw rod respectively coaxial cover be equipped with be located the pinch-off blades and the spring between the pinch-off blades down, every on the balance screw rod respectively coaxial rotation install the roof that is located the pinch-off blades below, every on the roof respectively threaded installation and rotate the lock lever of installing at the pinch-off blades lower extreme down, through the cooperation use between turning block and the cylinder, can satisfy different experimental demands, increased the flexibility of experiment.

Description

Novel torsional pendulum method moment of inertia test device

Technical Field

The utility model relates to a physics experiment technical field, concretely relates to novel turn round pendulum method inertia test device.

Background

The role of the moment of inertia in rotational dynamics is equivalent to the mass in linear dynamics, which can be formally understood as the inertia of an object to rotational motion, and is used to establish the relationship between several quantities such as angular momentum, angular velocity, moment and angular acceleration; the conventional method for detecting the rotational inertia can use a rotational inertia tester for detection, but in an experimental class, a detection method for divergently thinking and demonstrating the rotational inertia is needed, and the rotational inertia tester serving as an electronic instrument cannot intuitively express the relation between each variable and the rotational inertia, but a common experimental facility for testing the rotational inertia by a torsion pendulum method is adopted;

however, the existing experimental facilities for testing the rotational inertia by the torsion pendulum method are all fixed on a test bed, and when the test bed or a stair slightly deviates, the horizontal relation of the test bed or the stair needs to be adjusted, the device needs to be disassembled and then installed, so that the operation is troublesome and the adjustment process is complicated; when the laboratory glassware was moved to other places to needs, at this moment the experimental apparatus also followed the laboratory glassware and separately carried corresponding place, this degree of fatigue that has just increased the experimenter.

Therefore, the utility model provides a novel turn round pendulum method inertia test device solves this problem.

SUMMERY OF THE UTILITY MODEL

To the circumstances, for overcoming prior art's defect, the utility model provides a novel turn round pendulum method inertia test device, the effectual troublesome poeration of having solved experimental facilities and the problem of the loaded down with trivial details degree of fatigue that has increased the experimenter when carrying of leveling process.

Novel turn round pendulum method inertia testing arrangement, including a supporting seat, the top of supporting seat is provided with experimental apparatus, the upper end four corners department of supporting seat is threaded respectively and is installed balanced lead screw, every on the balanced lead screw respectively coaxial rotation install be located the supporting seat below the last pinch-off blades, every gliding lower pinch-off blades that just are located the pinch-off blades below about the last respectively coaxial arrangement of balanced lead screw, every coaxial cover respectively on the balanced lead screw is equipped with the spring that is located between pinch-off blades and the lower pinch-off blades, every coaxial rotation installs the roof that is located lower pinch-off blades below respectively on the balanced lead screw, every install and rotate the check lock lever of installing at the lower pinch-off blades lower extreme at the last respectively threaded mounting of roof.

Preferably, the experimental apparatus includes the electric telescopic handle of fixed mounting on the supporting seat, electric telescopic handle's flexible end fixed mounting has the rectangular block, the left end of rectangular block rotates the cylinder of installing the upper and lower direction, fixed mounting has just the torsional reed of coaxial arrangement on the cylinder on the rectangular block, the disc is installed to the upper end screw thread of cylinder, the side fixed mounting of disc has a shelves pole, gliding and the infrared inductor that is located the disc right side about the upper end of rectangular block is installed.

Preferably, square groove has been seted up to the left end of rectangular block, torsional spring piece fixed mounting is in square groove, set up the hidden groove that is located square groove right side on the rectangular block, the gliding pull box around hiding the inslot and installing, test block has been placed in the pull box.

Preferably, the left end of the rectangular block is provided with an adjusting rack which slides up and down, the upper end of the adjusting rack is fixedly provided with a fixed column, the fixed column is coaxially and rotatably provided with a rotating block, the left end of the rotating block is provided with a U-shaped groove, the infrared inductor is arranged in the U-shaped groove, the upper end face of the rectangular block is provided with a limiting toothed plate which slides left and right and is meshed with the adjusting rack, and a reset spring is arranged between the left end of the limiting toothed plate and the rectangular block.

Preferably, the lower extreme fixed mounting of supporting seat has and runs through every respectively go up the spacing riser of pinch-off blades and lower pinch-off blades, every the lower extreme of balanced lead screw fixed mounting respectively with be located the fixed block of roof below, the spirit level is installed respectively at both ends about the supporting seat.

The utility model has the advantages that:

when the test bed is used, the upper clamping plate, the balance screw rod, the clamping plate and the locking rod are matched for use, the supporting seat can be fixed, and at the moment, an experimenter can carry out experiments on an experimental instrument, so that the problems that the existing test bed is troublesome to adjust and complicated in leveling process are solved; the adjusting rack can be adjusted to a proper height by matching the adjusting rack with the limiting toothed plate, so that the device is suitable for different heights; through the cooperation use between turning block and the cylinder, can satisfy different experiment demands, increased the flexibility of experiment.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is the installation drawing of the upper clamping plate of the utility model.

Figure 3 is the utility model discloses spacing pinion rack installation picture.

Fig. 4 is an installation diagram of the return spring of the present invention.

Detailed Description

The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings of fig. 1 to 4. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.

Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

In the first embodiment, as shown in fig. 1 and fig. 1-2, the novel torsional pendulum method rotational inertia testing device includes a supporting seat 1, an experimental device is disposed above the supporting seat 1, balancing screws 2 are respectively and threadedly mounted at four corners of the upper end of the supporting seat 1, a rotating button is respectively and fixedly mounted at the upper end of each balancing screw 2, an upper clamping plate 3 located below the supporting seat 1 is respectively and coaxially and rotatably mounted on each balancing screw 2, a rubber sheet is respectively disposed on the lower end surface of each upper clamping plate 2, the rubber sheet can increase friction force, a lower clamping plate 4 which slides up and down and is located below the upper clamping plate 3 is respectively and coaxially and rotatably mounted on each balancing screw 2, a rubber sheet is respectively disposed on the upper end surface of each lower clamping plate 4, and the rubber sheet can increase friction force;

a spring 5 positioned between an upper clamping plate 3 and a lower clamping plate 4 is coaxially sleeved on each balance screw rod 2 respectively, a proper type of the spring 5 is selected according to needs when the balance screw rod is used, a top plate 6 positioned below the lower clamping plate 4 is coaxially and rotatably installed on each balance screw rod 2 respectively, and a locking rod 7 which is rotatably installed at the lower end of the lower clamping plate 4 is respectively installed on each top plate 6 in a threaded manner;

when the test bed is used, when a planar test bed is selected, the support seat 1 is placed on the test bed, when the support seat 1 inclines or the test bed is not horizontal, the corresponding upper clamping plate 3 and the corresponding lower clamping plate 4 are manually supported, the corresponding balance screws 2 are manually adjusted, the bottom of each balance screw 2 is respectively attached to the test bed, the support seat 1 is in a horizontal state, and then an experimenter can perform experiments on experimental instruments;

when laboratory glassware was placed on the experiment frame to needs, at this moment manually respectively holding up corresponding last grip block 3 and lower grip block 4, at this moment every last grip block 3 and the face that is close to each other of lower grip block 4 are hugged closely corresponding experiment frame respectively, rotate locking lever 7 respectively this moment, at this moment every locking lever 17 is tight the experiment frame is pressed from both sides tight corresponding lower extreme of lower grip block 4 respectively, if supporting seat 1 appears inclining, adjust corresponding balanced lead screw 2, make supporting seat 1 be in the horizontality, at this moment the experimenter and then can carry out the experiment to laboratory glassware gold, through the aforesaid operation, when having solved current test bench or stair and having taken place slight skew, adjust troublesome and the loaded down with trivial details problem of leveling process.

Embodiment two, on the basis of embodiment one, as shown in fig. 3, the experimental apparatus includes an electric telescopic rod 8 fixedly mounted on a supporting seat 1, the supporting seat 1 is provided with a storage battery and a display, when the experimental apparatus is reused, the electric telescopic rod 8 can be adjusted to a proper height through the electric telescopic rod 8 as required, the electric telescopic rod 8 is connected with a switch, the switch is connected with the storage battery, a telescopic end of the electric telescopic rod 8 is fixedly mounted with a rectangular block 9, a cylinder 10 in the vertical direction is rotatably mounted at a left end of the rectangular block 9, a torsion spring 11 is fixedly mounted on the rectangular block 9 and coaxially mounted on the cylinder 10, a bottom end of the torsion spring 11 is fixedly mounted on the rectangular block 9, an upper end of the torsion spring is fixedly mounted on the cylinder 10, a disc 12 is mounted on an upper end thread of the cylinder 10, a stop rod 13 is fixedly mounted on a side surface of the disc 12, an infrared sensor 14 which slides up and down and is located on a right side of the disc 12 is mounted at an upper end of the rectangular block 9, the infrared sensor 14 is connected with a display, and the display is connected with a storage battery;

when using, when needing to do the experiment for circular experimental apparatus, at this moment manually install the disc 12 in the upper end of cylinder 10, place circular experimental apparatus this moment in disc 12, stir shelves pole 13 this moment, at this moment shelves pole 13 takes torsion spring piece 11 to take place deformation through cylinder 10, loosen shelves pole 13 this moment, because torsion spring piece 11 bounce, at this moment through observing the number of times and cycle time of shelves pole 13 on infrared inductor 14, and then obtain the experimental data on the display, experiment convenient through above-mentioned operation.

Third embodiment, on the basis of second embodiment, as shown in fig. 3, square groove 15 has been seted up to the left end of rectangular block 9, the lower extreme of twisting reed 11 is fixed at the lower terminal surface of square groove 15, and upper end fixed mounting is on cylinder 10, set up hidden groove 16 that is located square groove 15 right side on rectangular block 9, gliding pull box 17 around installing in hidden groove 16, test piece 18 has been placed in pull box 17, when needing board assay device to carry other positions, can place circular experimental apparatus and accomodate in pull box 17 at this moment, solved when needing to move other places experimental apparatus to experimental apparatus, experimental apparatus also followed experimental apparatus and separately carried corresponding place, corresponding tired degree that has reduced the experimenter

In a fourth embodiment, on the basis of the second embodiment, as shown in fig. 4, an adjusting rack 19 which slides up and down is installed at the left end of the rectangular block 9, a fixed column 20 is fixedly installed at the upper end of the adjusting rack 19, a rotating block 21 is coaxially and rotatably installed on the fixed column 20, a friction pad is installed between the rotating block 21 and the fixed column 20, so that the friction degree between the rotating block 21 and the fixed column 20 can be increased, a U-shaped groove 22 is formed at the left end of the rotating block 21, the infrared inductor 14 is installed in the U-shaped groove 22, when in use, the stopper rod 13 slides in the front-back direction of the U-shaped groove 22, a limit toothed plate 23 which slides left and right and is engaged with the adjusting rack 19 is installed on the upper end surface of the rectangular block 9, and a return spring 24 is installed between the left end of the limit toothed plate 23 and the rectangular block 9;

when the experiment tool is used, when experiments are needed to be conducted on circular experimental equipment, the disc 12 is manually installed at the upper end of the cylinder 10, the circular experimental equipment is placed in the disc 12, the blocking rod 13 is shifted at the moment, the blocking rod 13 drives the torsion spring piece 11 to deform through the cylinder 10, the blocking rod 13 is loosened at the moment, due to the rebound force of the torsion spring piece 11, the blocking rod 13 swings back and forth in the U-shaped groove 22 at the moment, experimental data on a display can be obtained, and the experiments are convenient to operate;

when needing to carry out the experiment for longer horizontal pole, adjust adjusting rack 19 to suitable height this moment, adjust turning block 21 to vertical state after that, at this moment adjust infrared inductor 14 to U type groove 22 bottom, make the vertical upwards irradiation of infrared inductor 14, fix the horizontal pole in the upper end of cylinder 10 through anchor clamps, stir the horizontal pole swing from beginning to end at this moment, the horizontal pole swings in infrared inductor 14's top, experimental data that can obtain through the display, can satisfy different experimental demands through above-mentioned operation, the flexibility of experiment has been increased.

Fifth embodiment, on the basis of first embodiment, as shown in fig. 2, the lower extreme fixed mounting of supporting seat 1 has the spacing riser 25 that runs through every respectively go up clamp plate 3 and lower clamp plate 4, and when using, the setting of spacing riser 25 can prevent every go up clamp plate 3 and lower clamp plate 4 back and forth swing, every the lower extreme of balance screw 2 fixed mounting respectively with be located the fixed block 26 of roof 6 below, every the bottom of fixed block 26 sets up the rubber pad, the friction of increase and test bench, spirit level 27 is installed respectively at both ends about supporting seat 1, can adjust the levelness of supporting seat 1 through observing spirit level 27.

The utility model has the advantages that:

Claims

1. Novel turn round pendulum method inertia test device, including supporting seat (1), its characterized in that: the top of supporting seat (1) is provided with experimental apparatus, the upper end four corners department of supporting seat (1) is threaded respectively and is installed balanced lead screw (2), every on balanced lead screw (2) respectively coaxial rotation install be located supporting seat (1) below last pinch-off blades (3), every on balanced lead screw (2) respectively coaxial arrangement have gliding from top to bottom and be located pinch-off blades (3) below lower pinch-off blades (4), every on balanced lead screw (2) respectively coaxial cover be equipped with be located pinch-off blades (3) and down between pinch-off blades (4) spring (5), every on balanced lead screw (2) respectively coaxial rotation install roof (6) that are located pinch-off blades (4) below, every on roof (6) respectively threaded installation and rotate mounting locking lever (7) of installing under pinch-off blades (4) lower extreme.

2. The novel torsional pendulum method moment of inertia test device of claim 1, characterized in that: the experimental apparatus includes electric telescopic handle (8) of fixed mounting on supporting seat (1), the flexible end mounting of electric telescopic handle (8) has rectangular block (9), the left end of rectangular block (9) rotates cylinder (10) of installing upper and lower direction, fixed mounting has just torsional reed (11) of coaxial arrangement on cylinder (10) on rectangular block (9), disc (12) are installed to the upper end screw thread of cylinder (10), the side fixed mounting of disc (12) has shelves pole (13), gliding and infrared inductor (14) that just are located disc (12) right side about the upper end of rectangular block (9) is installed.

3. The novel torsional pendulum method moment of inertia test device of claim 2, characterized in that: square groove (15) have been seted up to the left end of rectangle piece (9), torsional spring piece (11) fixed mounting is in square groove (15), seted up on rectangle piece (9) and lie in hidden groove (16) on square groove (15) right side, gliding pull box (17) around installing in hidden groove (16), test block (18) have been placed in pull box (17).

4. The novel torsional pendulum method moment of inertia test device of claim 2, characterized in that: gliding regulation rack (19) about the left end installation of rectangle piece (9), the upper end fixed mounting of regulation rack (19) has fixed column (20), coaxial rotation installs turning block (21) on fixed column (20), U type groove (22) have been seted up to the left end of turning block (21), install in U type groove (22) infrared inductor (14), the up end of rectangle piece (9) install horizontal slip and with regulation rack (19) meshing limit toothed plate (23), install reset spring (24) between the left end of limit toothed plate (23) and rectangle piece (9).

5. The novel torsional pendulum method moment of inertia test device of claim 1, characterized in that: the lower extreme fixed mounting of supporting seat (1) has the spacing riser (25) that runs through every respectively go up clamp plate (3) and lower clamp plate (4), every the lower extreme of balanced lead screw (2) fixed mounting respectively with be located fixed block (26) of roof (6) below, spirit level (27) are installed respectively to the left and right sides both ends of supporting seat (1).