CN215065841U - Auxiliary device of multifunctional three-wire pendulum experimental instrument - Google Patents
Auxiliary device of multifunctional three-wire pendulum experimental instrument Download PDFInfo
- Publication number
- CN215065841U CN215065841U CN202022210309.7U CN202022210309U CN215065841U CN 215065841 U CN215065841 U CN 215065841U CN 202022210309 U CN202022210309 U CN 202022210309U CN 215065841 U CN215065841 U CN 215065841U
- Authority
- CN
- China
- Prior art keywords
- positioning
- axis
- rectangular
- rectangular sheet
- reference surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
An auxiliary device of a multifunctional three-line pendulum experimental instrument is characterized in that a base is a cylinder, a positioning rectangular groove and a positioning conical hole are formed in the upper end face of the base, positioning pin holes are symmetrically formed in the bottoms of the grooves, and the distance between the positioning pin holes is matched with the positioning holes of a three-line pendulum chassis; the measuring and limiting clamp is matched with the positioning rectangular groove, a ball body is placed into the positioning rectangular groove after being placed into the clamp to measure the ball diameter, the ball body rolls in along the conical surface simultaneously, and the gravity center of the ball body is automatically overlapped with the axis of the base; the circular ring piece is placed into the positioning rectangular groove after the outer diameter of the clamp is measured, the circumferential surface of the circular ring piece is positioned by two reference surfaces of the clamp, and the gravity center of the circular ring piece is adjusted to be coincident with the axis of the base; placing the rectangular sheet into the positioning rectangular groove after the rectangular sheet is placed into the fixture for measuring the height, positioning the upper end surface and the lower end surface of the rectangular sheet by two reference surfaces of the fixture, adjusting the gravity center of the rectangular sheet to be coincident with the axis of the base, measuring Jx, rotating 90 degrees clockwise, and measuring Jy; the auxiliary device is used for measuring the moment of inertia of spheres, circular ring sheets or rectangular sheets with different diameters.
Description
Technical Field
The utility model relates to an improvement to the physics experimental apparatus, which belongs to the technical field of the ordinary physics experimental apparatus.
Background
The moment of inertia is a measure of the moment of inertia of a rigid body, and two important theorems reflecting the moment of inertia of the rigid body are a parallel axis theorem and a vertical axis theorem, wherein the expression of the parallel axis theorem is as follows:J x =J c+mx 2in the formula (I), wherein,Jc represents a mass ofmThe moment of inertia of the rigid body about the centroidal axis,J xrepresenting rigid body winding parallel to the centroidal axis and at a distance ofxThe moment of inertia of the shaft of (a); the theorem of the vertical axis is that: moment of inertia of a sheet-like object when rotating about an axis perpendicular to the planeJ zEquivalent to moment of inertia about two axes perpendicular to each other in its planeJ xAndJ yto sum, i.e.J z=J x+ J y 。
The research of rigid body moment of inertia by utilizing a three-wire pendulum experimental device is an important content in college physical experiment teaching, the existing three-wire pendulum experimental device consists of a support, a beam, a base and an upper disc and a lower disc, the upper disc is fixed on the beam, three isometric suspension wires extending out of the upper disc suspend the lower disc, and can do torsional motion around the symmetry axis of the disc, and the measurement principle is as follows: when the swing angle is very small, the rotational inertia of the lower disc rotating around the central shaftJAnd period of oscillationTThe relationship of (1):J 0=T 0 2×m 0 gRr/4π 2 Hin the formula:m 0the mass of the lower disc is the mass of the lower disc,r andRthe distance from the circle centers of the upper and lower disks to the respective suspension points,His an upper and a lower circular discsThe vertical distance of (a) is,T 0is the twisting period of the lower disc,gfor gravitational acceleration, by measuring the period of torsionT 0 The moment of inertia of the lower disc can be obtained.
The three-line pendulum experimental device can be used for measuring the rotational inertia of a disc-shaped object and a ring-shaped object, and the method comprises the following steps: and (3) flatly placing an object to be measured with the mass m on the lower disc, enabling the symmetry axis of the object to be measured to coincide with the rotating shaft, measuring the twisting period T of the combined rigid body around the central shaft, and measuring the rotational inertia of the combined rigid body to the central shaft:J=T 2× (m 0+m)gRr/4π 2 Hthe moment of inertia of the object to be measured can be determined byJ Test object =J - J 0Calculating; and verifying the theorem of parallel axes by two identical small cylinders, the method comprises the following steps: two identical small cylinders are respectively and symmetrically placed on the lower disk, the symmetrical axis of the cylinder is parallel to the central axis of the lower disk, and the distance between the cylinder and the center isxBy measuring the torsional period of the two cylinders and the lower disc assembly, the moment of inertia of a small cylinder around the central axis of the disc is obtainedJx, then with (a)Jc+mx 2) The parallel axis theorem can be verified by comparing the calculated values.
Disclosure of Invention
The existing three-line pendulum device has a limited application range, and firstly, the lower disc cannot stably place a spherical object and cannot directly measure the rotational inertia of the spherical object; secondly, when the circular thin plate or the rectangular thin plate is perpendicular to the rotating shaft of the lower disk, the thin plate cannot be stably placed, so that the moment of inertia of the thin plate-shaped object cannot be directly measuredJ xAndJ yand can not verify the vertical axis theorem, consequently the utility model provides an auxiliary device not only can accomplish original experiment teaching content, can also measure spherical object's inertia to and verify the vertical axis theorem, richened the teaching content of three-way pendulum experiment, be favorable to the improvement of teaching quality.
The utility model provides a be: the utility model provides an auxiliary device of multi-functional three-wire pendulum laboratory glassware, characterized by: the main body of the base 1 is a cylinder 101, the upper end face of the cylinder 101 is vertically provided with a positioning rectangular groove 103 and a positioning conical hole 104, the groove center of the positioning rectangular groove 103 passes through the axis of the cylinder, the groove width of the positioning rectangular groove 103 is equal to the thickness of a standard circular sheet in a three-line pendulum experiment instrument, the bottom of the groove is symmetrically provided with three positioning pin holes 102, the distance is matched with the chassis positioning holes of the three-line pendulum experiment instrument 4, the axes of the three positioning pin holes 102 are in a plane and perpendicular to the bottom of the groove, the axis of the hole in the middle of each positioning pin hole is coincided with the axis of the cylinder 101, the vertex of the positioning conical hole 104 is downward, and the axis is coincided with the axis of the cylinder 101; the measuring and limiting clamp 2 consists of a clamp seat 202, a traction rope 207, a movable beam 208, two positioning pins A201, two guide posts 204 and two nuts 205, wherein, the thickness of the clamp seat 202 is equal to the groove width of the positioning rectangular groove 103, two positioning pins A201 are fixed on the bottom surface of the clamp seat 202, the space is matched with a chassis positioning hole of a three-line pendulum experiment instrument 4, the upper surface of the clamp seat 202 is composed of a lower reference surface 210 and two upright columns provided with threaded holes 203, one ends of the two guide columns 204 are respectively screwed into the threaded holes 203 until the base points of scales 211 on the guide columns 204 are on the same horizontal plane with the lower reference surface 210, two guide holes 206 on the movable beam 208 are respectively sleeved on the two guide columns 204, the movable beam 208 is guided by the guide columns 204 to slide up and down, two ends of a traction rope 207 are tied to one guide column 204 respectively, and the other ends of the two guide columns 204 are screwed with nuts 205 respectively; the sphere 3 is placed on the lower reference surface 210, the movable beam 208 is guided by the guide column 204 to slide downwards until the upper reference surface 209 of the movable beam 208 is in contact with the other surface of the sphere 3, the scale of the scale 211 indicated by the upper reference surface 209 is the diameter of the sphere 3, the traction rope 207 is lifted, the measurement limiting clamp 2 is matched with the base 1, the clamp seat 202 moves downwards along the two side walls of the positioning rectangular groove 103, the two positioning pins A201 are inserted into the two corresponding positioning pin holes 102 and then are inserted into the chassis positioning holes of the three-line pendulum experimental instrument 4 for limiting, the sphere 3 is matched with the conical surface of the positioning conical hole 104 for automatic centering when moving downwards, the axis of the sphere 3 in the plumb direction is overlapped with the axis of the cylinder 101, and the rotational inertia of the sphere 3 is measured.
The auxiliary device of the multifunctional three-wire pendulum experimental instrument is characterized in that: the circular sheet 5 is placed on the lower reference surface 210, the movable beam 208 is guided by the guide post 204 to slide downwards to the upper reference surface 209 of the movable beam 208 to be in contact with the other surface of the circular sheet 5, the scale of the scale 211 indicated by the upper reference surface 209 is the outer diameter of the circular sheet 5, the traction rope 207 is lifted, the measurement limiting clamp 2 is matched with the base 1, the clamp seat 202 moves downwards along the two side walls of the positioning rectangular groove 103, the two positioning pins A201 are inserted into the two corresponding positioning pin holes 102 and then inserted into the chassis positioning holes of the three-wire pendulum experiment instrument 4 for limiting, the axis of the plumb direction of the circular sheet 5 is adjusted to be coincident with the axis of the cylinder 101, and the rotational inertia of the circular sheet 5 in the state is measured.
The auxiliary device of the multifunctional three-wire pendulum experimental instrument is characterized in that: the rectangular sheet B8 is placed on the lower reference surface 210, the movable beam 208 is guided by the guide post 204 to slide downwards until the upper reference surface 209 of the movable beam 208 is in contact with the other surface of the rectangular sheet B8, the scale of the scale 211 indicated by the upper reference surface 209 is the height of the rectangular sheet B8 in the state, the traction rope 207 is lifted, the measuring and limiting clamp 2 is matched with the base 1, the clamp seat 202 moves downwards along the two side walls of the positioning rectangular groove 103, the two positioning pins A201 are inserted into the two corresponding positioning pin holes 102, then the two positioning pins are inserted into the chassis positioning holes of the three-line pendulum experiment instrument 4 for limiting, the center line of the plumb direction of the rectangular sheet B8 is adjusted to be coincident with the axis of the cylinder 101, and the rotational inertia of the rectangular sheet B8 in the state is measured.
The auxiliary device of the multifunctional three-wire pendulum experimental instrument is characterized in that: the rectangular sheet B8 is placed on the lower reference surface 210 after rotating 90 degrees clockwise, the movable beam 208 is guided by the guide post 204 to slide downwards until the upper reference surface 209 of the movable beam 208 is in contact with the other surface of the rectangular sheet B8, the scale 211 indicated by the upper reference surface 209 is the height of the rectangular sheet B8 in the state, the traction rope 207 is lifted, the measuring limit clamp 2 is matched with the base 1, wherein the clamp seat 202 moves downwards along the two side walls of the positioning rectangular groove 103, the two positioning pins A201 are inserted into the corresponding two positioning pin holes 102, then the two positioning pins are inserted into the chassis positioning holes of the three-line pendulum experiment instrument 4 for limiting, the center line in the plumb direction of the rectangular sheet B8 is adjusted to be coincident with the axis of the cylinder 101, and the rotational inertia of the rectangular sheet B8 in the state is measured.
The auxiliary device of the multifunctional three-wire pendulum experimental instrument is characterized in that: the rectangular sheet A7 is placed in the positioning rectangular groove 103, the thickness of the rectangular sheet A7 is equal to the width of the positioning rectangular groove 103, two positioning pins B6 are inserted into the two corresponding positioning pin holes 102 and then inserted into the positioning holes of the chassis of the three-line pendulum experiment instrument 4 for limiting, the center line of the rectangular sheet A7 in the plumb direction is adjusted to be coincident with the axis of the cylinder 101, and the rotational inertia of the rectangular sheet A7 in the state is measured.
The auxiliary device of the multifunctional three-wire pendulum experimental instrument is characterized in that: the rectangular sheet A7 is placed in a positioning rectangular groove 103 after being rotated 90 degrees clockwise, two positioning pins B6 are inserted into two corresponding positioning pin holes 102 and then inserted into positioning holes of a chassis of a three-line pendulum experimental instrument 4 for limiting, the center line of the rectangular sheet A7 in the plumb direction is adjusted to be superposed with the axis of the cylinder 101, and the rotational inertia of the rectangular sheet A7 in the state is measured.
The utility model discloses an useful part lies in: an auxiliary device of a multifunctional three-line pendulum experimental instrument is characterized in that a base is a cylinder, a positioning rectangular groove and a positioning conical hole are formed in the upper end face of the base, positioning pin holes are symmetrically formed in the bottoms of the grooves, and the distance between the positioning pin holes is matched with the positioning holes of a three-line pendulum chassis; the measuring and limiting clamp is matched with the positioning rectangular groove, a ball body is placed into the positioning rectangular groove after being placed into the clamp to measure the ball diameter, the ball body rolls in along the conical surface simultaneously, and the gravity center of the ball body is automatically overlapped with the axis of the base; the circular ring piece is placed into the positioning rectangular groove after the outer diameter of the clamp is measured, the circumferential surface of the circular ring piece is positioned by two reference surfaces of the clamp, and the gravity center of the circular ring piece is adjusted to be coincident with the axis of the base; placing the rectangular sheet into the positioning rectangular groove after the rectangular sheet is placed into the fixture for measuring the height, positioning the upper end surface and the lower end surface of the rectangular sheet by two reference surfaces of the fixture, adjusting the gravity center of the rectangular sheet to be coincident with the axis of the base, measuring Jx, rotating 90 degrees clockwise, and measuring Jy; the auxiliary device is used for measuring the moment of inertia of spheres, circular ring sheets or rectangular sheets with different diameters.
Drawings
Fig. 1 is a front view of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a left side view of FIG. 1;
fig. 4 is a diagram of the use state a of the present invention;
fig. 5 is a diagram of the use state B of the present invention;
fig. 6 is a diagram of the usage state C of the present invention;
fig. 7 is a diagram of the usage state D of the present invention;
fig. 8 is a diagram of the usage state E of the present invention;
fig. 9 is a diagram of the usage state F of the present invention.
In the figure, 1, a base; 101. a cylinder; 102. a positioning pin hole; 103. positioning the rectangular groove; 104. positioning the conical hole; 2. measuring a limiting clamp; 201. positioning pins A; 202. a clamp seat; 203. a threaded hole; 204. a guide post; 205. a nut; 206. a guide hole; 207. a hauling rope; 208. a movable beam; 209. an upper reference surface; 210. a lower datum plane; 211. calibration; 3. a sphere; 4. a three-line pendulum experimental instrument; 5. a ring piece; 6. a positioning pin B; 7. a rectangular sheet A; 8. and a rectangular sheet B.
Detailed Description
An auxiliary device of a multifunctional three-line pendulum experimental instrument is shown in figures 1-4, and is characterized in that: the main body of the base 1 is a cylinder 101, the upper end face of the cylinder 101 is vertically provided with a positioning rectangular groove 103 and a positioning conical hole 104, the groove center of the positioning rectangular groove 103 passes through the axis of the cylinder, the groove width of the positioning rectangular groove 103 is equal to the thickness of a standard circular sheet in a three-line pendulum experiment instrument, the bottom of the groove is symmetrically provided with three positioning pin holes 102, the distance is matched with the chassis positioning holes of the three-line pendulum experiment instrument 4, the axes of the three positioning pin holes 102 are in a plane and perpendicular to the bottom of the groove, the axis of the hole in the middle of each positioning pin hole is coincided with the axis of the cylinder 101, the vertex of the positioning conical hole 104 is downward, and the axis is coincided with the axis of the cylinder 101; the measuring and limiting clamp 2 consists of a clamp seat 202, a traction rope 207, a movable beam 208, two positioning pins A201, two guide posts 204 and two nuts 205, wherein, the thickness of the clamp seat 202 is equal to the groove width of the positioning rectangular groove 103, two positioning pins A201 are fixed on the bottom surface of the clamp seat 202, the space is matched with a chassis positioning hole of a three-line pendulum experiment instrument 4, the upper surface of the clamp seat 202 is composed of a lower reference surface 210 and two upright columns provided with threaded holes 203, one ends of the two guide columns 204 are respectively screwed into the threaded holes 203 until the base points of scales 211 on the guide columns 204 are on the same horizontal plane with the lower reference surface 210, two guide holes 206 on the movable beam 208 are respectively sleeved on the two guide columns 204, the movable beam 208 is guided by the guide columns 204 to slide up and down, two ends of a traction rope 207 are tied to one guide column 204 respectively, and the other ends of the two guide columns 204 are screwed with nuts 205 respectively; the sphere 3 is placed on the lower reference surface 210, the movable beam 208 is guided by the guide column 204 to slide downwards until the upper reference surface 209 of the movable beam 208 is in contact with the other surface of the sphere 3, the scale of the scale 211 indicated by the upper reference surface 209 is the diameter of the sphere 3, the traction rope 207 is lifted, the measurement limiting clamp 2 is matched with the base 1, the clamp seat 202 moves downwards along the two side walls of the positioning rectangular groove 103, the two positioning pins A201 are inserted into the two corresponding positioning pin holes 102 and then are inserted into the chassis positioning holes of the three-line pendulum experimental instrument 4 for limiting, the sphere 3 is matched with the conical surface of the positioning conical hole 104 for automatic centering when moving downwards, the axis of the sphere 3 in the plumb direction is overlapped with the axis of the cylinder 101, and the rotational inertia of the sphere 3 is measured.
The auxiliary device of the multifunctional three-wire pendulum experimental instrument is shown in fig. 5, and is characterized in that: the circular sheet 5 is placed on the lower reference surface 210, the movable beam 208 is guided by the guide post 204 to slide downwards to the upper reference surface 209 of the movable beam 208 to be in contact with the other surface of the circular sheet 5, the scale of the scale 211 indicated by the upper reference surface 209 is the outer diameter of the circular sheet 5, the traction rope 207 is lifted, the measurement limiting clamp 2 is matched with the base 1, the clamp seat 202 moves downwards along the two side walls of the positioning rectangular groove 103, the two positioning pins A201 are inserted into the two corresponding positioning pin holes 102 and then inserted into the chassis positioning holes of the three-wire pendulum experiment instrument 4 for limiting, the axis of the plumb direction of the circular sheet 5 is adjusted to be coincident with the axis of the cylinder 101, and the rotational inertia of the circular sheet 5 in the state is measured.
The auxiliary device of the multifunctional three-wire pendulum experimental instrument is shown in fig. 8, and is characterized in that: the rectangular sheet B8 is placed on the lower reference surface 210, the movable beam 208 is guided by the guide post 204 to slide downwards until the upper reference surface 209 of the movable beam 208 is in contact with the other surface of the rectangular sheet B8, the scale value of the scale 211 indicated by the upper reference surface 209 is the height of the rectangular sheet B8 in the state, the traction rope 207 is lifted, the measuring and limiting clamp 2 is matched with the base 1, the clamp seat 202 moves downwards along the two side walls of the positioning rectangular groove 103, the two positioning pins A201 are inserted into the two corresponding positioning pin holes 102, then the two positioning pins are inserted into the chassis positioning holes of the three-line pendulum experiment instrument 4 for limiting, the center line of the plumb direction of the rectangular sheet B8 is adjusted to be coincident with the axis of the cylinder 101, and the rotational inertia of the rectangular sheet B8 in the state is measured.
The auxiliary device of the multifunctional three-wire pendulum experimental instrument is shown in fig. 9, and is characterized in that: the rectangular sheet B8 is placed on the lower reference surface 210 after rotating 90 degrees clockwise, the movable beam 208 is guided by the guide post 204 to slide downwards until the upper reference surface 209 of the movable beam 208 is in contact with the other surface of the rectangular sheet B8, the scale of the scale 211 indicated by the upper reference surface 209 is the height of the rectangular sheet B8 in the state, the traction rope 207 is lifted, the measuring limit clamp 2 is matched with the base 1, wherein the clamp seat 202 moves downwards along the two side walls of the positioning rectangular groove 103, the two positioning pins A201 are inserted into the corresponding two positioning pin holes 102, the two positioning pins A are inserted into the chassis positioning holes of the three-line pendulum experiment instrument 4 for limiting, the center line in the plumb direction of the rectangular sheet B8 is adjusted to be coincident with the axis of the cylinder 101, and the rotational inertia of the rectangular sheet B8 in the state is measured.
The auxiliary device of the multifunctional three-wire pendulum experimental instrument is shown in fig. 6, and is characterized in that: the rectangular sheet A7 is placed in the positioning rectangular groove 103, the thickness of the rectangular sheet A7 is equal to the width of the positioning rectangular groove 103, two positioning pins B6 are inserted into the two corresponding positioning pin holes 102 and then inserted into the positioning holes of the chassis of the three-line pendulum experiment instrument 4 for limiting, the center line of the rectangular sheet A7 in the plumb direction is adjusted to be coincident with the axis of the cylinder 101, and the rotational inertia of the rectangular sheet A7 in the state is measured.
The auxiliary device of the multifunctional three-wire pendulum experimental instrument is shown in fig. 7, and is characterized in that: the rectangular sheet A7 is placed in a positioning rectangular groove 103 after being rotated 90 degrees clockwise, two positioning pins B6 are inserted into two corresponding positioning pin holes 102 and then inserted into positioning holes of a chassis of a three-line pendulum experimental instrument 4 for limiting, the center line of the rectangular sheet A7 in the plumb direction is adjusted to be superposed with the axis of the cylinder 101, and the rotational inertia of the rectangular sheet A7 in the state is measured.
Claims (6)
1. The utility model provides an auxiliary device of multi-functional three-wire pendulum laboratory glassware, characterized by: the main body of the base (1) is a cylinder (101), the upper end face of the cylinder (101) is vertically provided with a positioning rectangular groove (103) and a positioning conical hole (104) downwards, the groove center of the positioning rectangular groove (103) passes through the axis of the cylinder, the groove width of the positioning rectangular groove is equal to the thickness of a standard circular sheet in a three-line pendulum experiment instrument, the bottom of the groove is symmetrically provided with three positioning pin holes (102), the distance is matched with a chassis positioning hole of the three-line pendulum experiment instrument (4), the axes of the three positioning pin holes (102) are in a plane and perpendicular to the bottom of the groove, the axis of a hole in the middle of each positioning pin hole is coincided with the axis of the cylinder (101), the vertex of each positioning conical hole (104) is downward, and the axis is coincided with the axis of the cylinder (101); the measuring and limiting clamp (2) consists of a clamp seat (202), a traction rope (207), a movable beam (208), two positioning pins A (201), two guide posts (204) and two nuts (205), wherein the thickness of the clamp seat (202) is equal to the groove width of the positioning rectangular groove (103), the two positioning pins A (201) are fixed on the bottom surface of the clamp seat (202), the distance between the two positioning pins A and the positioning holes is matched with the chassis positioning holes of the three-line pendulum experiment instrument (4), the upper surface of the clamp seat (202) consists of a lower reference surface (210) and two upright posts provided with threaded holes (203), one ends of the two guide posts (204) are respectively screwed into the base points of scales (211) from the threaded holes (203) to the guide posts (204) and the lower reference surface (210) on the same horizontal plane, the two guide holes (206) on the movable beam (208) are respectively sleeved on the two guide posts (204), and the movable beam (208) is guided by the guide posts (204) to slide up and down, two ends of the pulling rope (207) are tied on one guide post (204) respectively, and the other ends of the two guide posts (204) are screwed with one nut (205) respectively; the ball body (3) is placed on a lower reference surface (210), the movable beam (208) is guided by the guide column (204) to slide downwards to an upper reference surface (209) of the movable beam (208) to be in contact with the other surface of the ball body (3), the scale of a scale (211) pointed by the upper reference surface (209) is the diameter of the ball body (3), the traction rope (207) is lifted, the measuring and limiting clamp (2) is matched with the base (1), the fixture base (202) moves downwards along two side walls of the positioning rectangular groove (103), the two positioning pins A (201) are inserted into the two corresponding positioning pin holes (102) and then are inserted into chassis positioning holes of the three-line pendulum experiment instrument (4) for limiting, the sphere (3) is matched with a conical surface of the positioning conical hole (104) for automatic centering when moving downwards, the axis of the sphere (3) in the plumb direction coincides with the axis of the cylinder (101), and the moment of inertia of the sphere (3) is measured.
2. The auxiliary device of the multifunctional three-wire pendulum experimental instrument as claimed in claim 1, wherein: the circular sheet (5) is placed on a lower reference surface (210), the movable beam (208) is guided by the guide post (204) to slide downwards to the position where an upper reference surface (209) of the movable beam (208) is in contact with the other surface of the circular sheet (5), the scale of a scale (211) pointed by the upper reference surface (209) is the outer diameter of the circular sheet (5), a traction rope (207) is lifted, the measuring and limiting clamp (2) is matched with the base (1), wherein the clamp seat (202) moves downwards along two side walls of the positioning rectangular groove (103), the two positioning pins A (201) are inserted into the corresponding two positioning pin holes (102) and then inserted into a chassis positioning hole of the three-line pendulum experiment instrument (4) for limiting, the axis of the direction of a plumb bob of the circular sheet (5) is adjusted to coincide with the axis of the cylinder (101), and the rotational inertia of the circular sheet (5) in the state is measured.
3. The auxiliary device of the multifunctional three-wire pendulum experimental instrument as claimed in claim 1, wherein: the rectangular sheet B (8) is placed on a lower reference surface (210), the movable beam (208) is guided by the guide column (204) to slide downwards to the upper reference surface (209) of the movable beam (208) to be in contact with the other surface of the rectangular sheet B (8), the scale of the scale (211) pointed by the upper reference surface (209) is the height of the rectangular sheet B (8) in the state, the traction rope (207) is lifted, the measuring and limiting clamp (2) is matched with the base (1), the clamp seat (202) moves downwards along the two side walls of the positioning rectangular groove (103), the two positioning pins A (201) are inserted into the two corresponding positioning pin holes (102) and then inserted into the chassis positioning holes of the three-line pendulum experiment instrument (4) for limiting, the axis of the plumb direction of the rectangular sheet B (8) is adjusted to be coincident with the axis of the cylinder (101), and the rotational inertia of the rectangular sheet B (8) in the state is measured.
4. The auxiliary device of the multifunctional three-wire pendulum experimental instrument as claimed in claim 3, wherein: the rectangular sheet B (8) rotates clockwise by 90 degrees and then is placed on a lower reference surface (210), the movable beam (208) is guided by the guide post (204) to slide downwards to an upper reference surface (209) of the movable beam (208) to be contacted with the other surface of the rectangular sheet B (8), the scale value of a scale (211) pointed by the upper reference surface (209) is the height of the rectangular sheet B (8) in the state, the traction rope (207) is lifted, and the measuring and limiting clamp (2) is matched with the base (1), the fixture base (202) moves downwards along two side walls of the positioning rectangular groove (103), the two positioning pins A (201) are inserted into the two corresponding positioning pin holes (102) and then are inserted into chassis positioning holes of the three-wire pendulum experiment instrument (4) for limiting, the central line of the rectangular sheet B (8) in the plumb direction is adjusted to be superposed with the axis of the cylinder (101), and the rotational inertia of the rectangular sheet B (8) in the state is measured.
5. The auxiliary device of the multifunctional three-wire pendulum experimental instrument as claimed in claim 3, wherein: the rectangular sheet A (7) is placed in the positioning rectangular groove (103), the thickness of the rectangular sheet A (7) is equal to the groove width of the positioning rectangular groove (103), the two positioning pins B (6) are inserted into the two corresponding positioning pin holes (102), then the rectangular sheet A (7) is inserted into the chassis positioning hole of the three-wire pendulum experimental instrument (4) for limiting, the center line of the plumb direction of the rectangular sheet A (7) is adjusted to be coincident with the axis of the cylinder (101), and the rotational inertia of the rectangular sheet A (7) in the state is measured.
6. The auxiliary device of the multifunctional three-wire pendulum experimental instrument as claimed in claim 5, wherein: the rectangular sheet A (7) is rotated clockwise by 90 degrees and then placed in a positioning rectangular groove (103), two positioning pins B (6) are inserted into two corresponding positioning pin holes (102) and then inserted into chassis positioning holes of a three-line pendulum experiment instrument (4) for limiting, the center line of the rectangular sheet A (7) in the plumb direction is adjusted to be overlapped with the axis of a cylinder (101), and the moment of inertia of the rectangular sheet A (7) in the state is measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022210309.7U CN215065841U (en) | 2020-10-02 | 2020-10-02 | Auxiliary device of multifunctional three-wire pendulum experimental instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022210309.7U CN215065841U (en) | 2020-10-02 | 2020-10-02 | Auxiliary device of multifunctional three-wire pendulum experimental instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215065841U true CN215065841U (en) | 2021-12-07 |
Family
ID=79159912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022210309.7U Active CN215065841U (en) | 2020-10-02 | 2020-10-02 | Auxiliary device of multifunctional three-wire pendulum experimental instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215065841U (en) |
-
2020
- 2020-10-02 CN CN202022210309.7U patent/CN215065841U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105784276B (en) | The polyaxial inertia automatic measurement of marine structure thing test model and adjusting means and its application method | |
| CN201903430U (en) | Stand for measuring rotary inertia | |
| CN112577668B (en) | Irregular structure mass center measuring device and method | |
| CN112393832B (en) | Thimble type micro-impulse applying device for micro-impulse testing mechanism | |
| CN106979843B (en) | A kind of aero-engine center of gravity detection method | |
| CN215065841U (en) | Auxiliary device of multifunctional three-wire pendulum experimental instrument | |
| US11333568B2 (en) | Gravity pendulum, adapter and holder | |
| CN206002396U (en) | A kind of simple three axle soil sample stretcher strain measurement apparatus | |
| CN212933892U (en) | Auxiliary device of simple three-line pendulum experimental instrument | |
| CN203011579U (en) | Air spring detection device | |
| CN2922002Y (en) | Quantitative proofing tester for coulomb's law | |
| CN106052958B (en) | A kind of single-axle air bearing table balancing method and system | |
| CN103105280A (en) | Tester of main influencing factor of structure stability | |
| CN206095816U (en) | Static side's board method testing arrangement of timber shear modulus | |
| CN204010434U (en) | Double scale physical pendulum high-acruracy survey gravity acceleration experimental instrument | |
| CN114485595B (en) | Method for accurately positioning and marking strain measuring point of bridge static load test and marking device | |
| CN106952542B (en) | Physical gravity experimental simulation device | |
| CN214107017U (en) | Laboratory fixing device | |
| CN212180174U (en) | Six-dimensional force sensor dynamic calibration device | |
| CN207008930U (en) | A kind of novel self-balanced hoisting ring device | |
| CN210515843U (en) | Coulomb force experiment instrument based on light lever | |
| CN210346994U (en) | Rotational inertia measuring instrument | |
| CN202329939U (en) | Device for measuring center of mass of object | |
| CN221466170U (en) | Lever balance condition demonstration instrument | |
| CN206400893U (en) | A kind of carry accurately measures horizontal compound pendulum type dolly teaching aid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |