CN210324782U

CN210324782U - Three-wire pendulum experimental instrument with retractable suspension wire

Info

Publication number: CN210324782U
Application number: CN201920741536.7U
Authority: CN
Inventors: 韩运侠; 陶亚萍; 李大亮; 王莎莎
Original assignee: Luoyang Normal University
Current assignee: Luoyang Normal University
Priority date: 2019-04-23
Filing date: 2019-05-22
Publication date: 2020-04-14
Anticipated expiration: 2029-05-22

Abstract

The utility model provides a three-wire pendulum experiment appearance that suspension line can be received and released, comprising a base plate, inlay on the bottom plate and install digital millisecond meter, the bottom plate top surface left and right sides is fixed mounting pole setting respectively, through roof fixed connection between the coexistence pole top, the first pivot top of roof bottom surface middle part bearing installation, the first rotating circular disk of first pivot bottom end fixed mounting, bottom plate top surface middle part bearing installation second pivot bottom, second pivot top fixed mounting second rotating circular disk, second rotating circular disk diameter is greater than first rotating circular disk diameter, the three evenly distributed's of second rotating circular disk top surface outside fixed mounting draw-in groove. The utility model can fold or unfold the suspension wire, and the suspension wire can be stored in the box body when being carried or taken for storage, thereby avoiding the suspension wire from being hooked by surrounding objects to be pulled to break the suspension wire; simultaneously the utility model discloses still possess characteristics such as simple structure, convenient to use, low in manufacturing cost are honest and clean, should use widely.

Description

Three-wire pendulum experimental instrument with retractable suspension wire

Technical Field

The utility model belongs to the technical field of 3 laboratory glassware, specifically speaking is a three-wire pendulum laboratory apparatus that suspension line can receive and release.

Background

The three-cycloid method is an important method for measuring the rotational inertia of an object, has the advantages of clear image, simplicity and convenience in operation, suitability for various shapes and the like, and the experiment for measuring the rotational inertia of the object by using the three-cycloid method is the most common experiment project in physics experiments in science and technology. The prior art discloses the application numbers as follows: the CN201720507690.9 three-wire pendulum experiment instrument comprises a bottom plate, wherein an upright rod is arranged on the bottom plate, and a support … … is arranged at the top of the upright rod, so that the three-wire pendulum length is increased, the swing amplitude of a lower disc is controlled, errors caused by approximation are reduced, the lower disc is ensured to swing as a fixed shaft, the errors caused by measurement are limited, the measurement precision is improved, the operation is more stable and convenient, and the appearance is greatly improved; but the utility model discloses a suspension wire is in the expansion tensile state all the time, and the suspension wire is caught the emergence and is dragged by things on every side easily when carrying the in-process or taking to deposit, therefore the suspension wire is broken easily, and then influences the normal use of whole device.

SUMMERY OF THE UTILITY MODEL

The utility model provides a three-wire pendulum experiment instrument that suspension wire can receive and release for solve the defect among the prior art.

The utility model discloses a following technical scheme realizes:

a three-wire pendulum experiment instrument with retractable suspension wires comprises a bottom plate, wherein a digital millisecond meter is embedded and installed on the bottom plate, vertical rods are respectively and fixedly installed on the left side and the right side of the top surface of the bottom plate, the tops of the two vertical rods are fixedly connected through a top plate, the top end of a first rotating shaft is installed in the middle of the bottom surface of the top plate in a bearing mode, a first rotating disc is fixedly installed at the bottom end of the first rotating shaft, the bottom end of a second rotating shaft is installed in the middle of the top surface of the bottom plate in a bearing mode, a second rotating disc is fixedly installed at the top end of the second rotating shaft, the diameter of the second rotating disc is larger than that of the first rotating disc, three clamping grooves which are evenly distributed are fixedly installed on the outer side of the top surface of the second rotating disc, a plurality of uniformly distributed box bodies are fixedly installed on the outer side of the bottom surface, be equipped with the suspension wire in the pivot, suspension wire one end and the pivot of corresponding are at periphery middle part fixed connection, and the suspension wire other end passes the through-hole that corresponds and is located the box body outside that corresponds, and the suspension wire cooperates with the through-hole inner wall contact that corresponds, suspension wire other end fixed mounting foil, foil and draw-in groove one-to-one, and the foil can insert the draw-in groove that corresponds in, the foil is located the box body bottom that corresponds.

According to the three-wire pendulum experimental instrument with the retractable suspension wire, the push-pull rod is fixedly installed in the middle of the outer side of the metal sheet.

According to the three-wire pendulum experimental instrument with the retractable suspension wire, the anti-skid grains are arranged on the periphery of the push-pull rod.

According to the three-wire pendulum experimental instrument with the retractable suspension wire, the left side and the right side in the through hole are respectively provided with the spherical grooves, the balls are arranged in the spherical grooves in a matched mode, the balls can roll in the corresponding spherical grooves, and the balls are in contact fit with the corresponding suspension wires.

According to the three-wire pendulum experimental instrument with the retractable suspension wire, the left side and the right side and the front side and the rear side of the top surface of the metal sheet are respectively provided with the slot, the left side and the right side and the front side and the rear side of the bottom surface of the box body are respectively and fixedly provided with the inserted rods, the inserted rods are in one-to-one correspondence with the slots, and the inserted rods can be inserted into the corresponding slots.

The three-wire pendulum experimental instrument with the retractable suspension wire is characterized in that the surface of the torsion spring is galvanized.

The utility model has the advantages that: the utility model can fold or unfold the suspension wire, and the suspension wire can be stored in the box body when being carried or taken for storage, thereby avoiding the suspension wire from being hooked by surrounding objects to be pulled to break the suspension wire; when the utility model is used for experiments, the suspension wires can be pulled out from the box body and fixed on the lower rotating disc, so that the suspension wires are in an expanded and stretched state, and the experiments can be carried out by means of the utility model; when the utility model is not used, a user should firstly separate the metal thin sheet from the corresponding clamping groove in sequence, at the moment, the rotating shaft rotates under the torsion action of the corresponding torsion spring, because one end of the suspension wire is fixedly connected with the periphery of the rotating shaft, the rotating shaft rotates to drive the corresponding suspension wire to rotate, and the suspension wire moves upwards along the corresponding through hole and is gradually wound on the corresponding rotating shaft, so that the suspension wire can be taken into the corresponding box body, and the suspension wire can be prevented from being caught by the surrounding things to be pulled to break the suspension wire when being carried or taken for storage; when the device is used for carrying out experiments, the metal sheet is pulled by hands, the other end of the suspension wire is fixedly connected with the top surface of the metal sheet, the metal sheet drives the corresponding suspension wire to move downwards, the suspension wire pulls the corresponding rotating shaft to rotate, the suspension wire can be gradually unfolded, the metal sheet is continuously pulled downwards until the metal sheet is inserted into the corresponding clamping groove, and therefore the metal sheet can be fixed, and the suspension wire is in an unfolded and stretched state at the moment, so that the device can be used for carrying out experiments; simultaneously the utility model discloses still possess characteristics such as simple structure, convenient to use, low in manufacturing cost are honest and clean, should use widely.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural diagram of the present invention; FIG. 2 is an enlarged view of section I of FIG. 1; FIG. 3 is an enlarged view of section II of FIG. 1; fig. 4 is a partially enlarged view III of fig. 2.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

A three-wire pendulum experiment instrument with a retractable suspension wire comprises a bottom plate 1, wherein a digital millisecond meter is embedded and installed on the bottom plate 1, vertical rods 2 are fixedly installed on the left side and the right side of the top surface of the bottom plate 1 respectively, the top ends of the two vertical rods 2 are fixedly connected through a top plate 4, the top end of a first rotating shaft 5 is installed on the middle bearing of the bottom surface of the top plate 4, a first rotating disc 6 is fixedly installed at the bottom end of the first rotating shaft 5, the bottom end of a second rotating shaft 7 is installed on the middle bearing of the top surface of the bottom plate 1, a second rotating disc 8 is fixedly installed at the top end of the second rotating shaft 7, the diameter of the second rotating disc 8 is larger than that of the first rotating disc 6, three clamping grooves 9 which are uniformly distributed are fixedly installed on the outer side of the top surface of the second rotating disc 8, a plurality of uniformly distributed box bodies 10 are fixedly installed on the outer side of the bottom surface of, the right side is connected through the bearing between 12 right-hand members in pivot and the box body 10 that corresponds, be equipped with suspension wire 13 on pivot 12, suspension wire 13 one end and the pivot 12 that corresponds are at peripheral middle part fixed connection, the suspension wire 13 other end passes corresponding through-hole 11 and is located the box body 10 outside that corresponds, suspension wire 13 and the 11 inner wall contact cooperation of through-hole that corresponds, suspension wire 13 other end fixed mounting foil 14, foil 14 and draw-in groove 9 one-to-one, and foil 14 can insert in the draw-in groove 9 that corresponds, foil 14 is located the box body 10 bottom that corresponds. The utility model can fold or unfold the suspension wire, and the suspension wire can be stored in the box body when being carried or taken for storage, thereby avoiding the suspension wire from being hooked by surrounding objects to be pulled to break the suspension wire; when the utility model is used for experiments, the suspension wires can be pulled out from the box body and fixed on the lower rotating disc, so that the suspension wires are in an expanded and stretched state, and the experiments can be carried out by means of the utility model; when the utility model is not used, a user should firstly separate the metal thin sheet 14 from the corresponding clamping groove 9 in sequence, at the moment, the rotating shaft 12 rotates under the torsion action of the corresponding torsion spring, because one end of the suspension wire 13 is fixedly connected with the periphery of the rotating shaft 12, the rotating shaft 12 rotates to drive the corresponding suspension wire 13 to rotate, the suspension wire 13 moves upwards along the corresponding through hole 11 and is gradually wound on the corresponding rotating shaft 12, so that the suspension wire 13 can be collected into the corresponding box body 10, and the suspension wire can be prevented from being hooked by the surrounding objects to be pulled to break; when the utility model is used for experiment, the metal sheet 14 is pulled by hands, because the other end of the suspension wire 13 is fixedly connected with the top surface of the metal sheet 14, the metal sheet 14 drives the corresponding suspension wire 13 to move downwards, the suspension wire 13 pulls the corresponding rotating shaft 12 to rotate, so that the suspension wire 13 can be gradually unfolded, the metal sheet 14 is continuously pulled downwards until the metal sheet is inserted into the corresponding clamping groove 9, so that the metal sheet 14 can be fixed, and the suspension wire 13 is in an unfolded and stretched state at the moment, so that the utility model can be used for experiment; simultaneously the utility model discloses still possess characteristics such as simple structure, convenient to use, low in manufacturing cost are honest and clean, should use widely.

Specifically, in order to facilitate the user to pull or push the metal sheet 14, a push-pull rod 15 is fixedly installed at the middle of the outer side of the metal sheet 14 in the embodiment. The push-pull rod 15 can be arranged to give the user a point of force on his hand, which can facilitate the user pulling or pushing the foil 14.

Specifically, in order to avoid the hand slipping when the user holds the push-pull rod 15, the push-pull rod 15 according to the present embodiment is provided with anti-slip threads on the outer periphery thereof. The friction between the hand of the user and the push-pull rod 15 can be increased by arranging the anti-slip lines, so that the hand slip when the user holds the push-pull rod 15 can be avoided.

Furthermore, in order to make the suspension wires 13 move along the corresponding through holes 11 more smoothly, spherical grooves 16 are respectively formed in the left side and the right side of the through holes 11, balls 17 are arranged in the spherical grooves 16 in a matching manner, the balls 17 can roll in the corresponding spherical grooves 16, and the balls 17 are in contact fit with the corresponding suspension wires 13. The friction between the suspension wire 13 and the inner wall of the corresponding through hole 11 can be reduced through the matching of the spherical groove 16 and the ball 17, and further the suspension wire 13 can move more smoothly along the corresponding through hole 11.

Further, in order to avoid carrying the utility model discloses an in-process foil 14 rocks at will, this embodiment 14 top surface left and right sides of foil and front and back both sides set up slot 18 respectively, box body 10 bottom surface left and right sides and front and back both sides fixed mounting inserted bar 19 respectively, inserted bar 19 and slot 18 one-to-one, and inserted bar 19 can insert in the slot 18 that corresponds. Can fix foil 14 through the cooperation of inserted bar 19 with slot 18, and then can avoid carrying the utility model discloses an in-process foil 14 rocks at will.

Furthermore, in order to avoid rusting and corrosion on the surface of the torsion spring, the surface of the torsion spring is galvanized. The surface of the torsion spring is galvanized, so that the corrosion resistance of the torsion spring can be improved, and further, the surface of the torsion spring can be prevented from rusting and corroding.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a three-wire pendulum experimental apparatus that suspension line can receive and release which characterized in that: comprises a bottom plate (1), a digital millisecond meter is embedded and installed on the bottom plate (1), vertical rods (2) are respectively and fixedly installed on the left side and the right side of the top surface of the bottom plate (1), the top ends of the two vertical rods (2) are fixedly connected through a top plate (4), the top end of a first rotating shaft (5) is installed on the middle bearing of the bottom surface of the top plate (4), a first rotating disc (6) is fixedly installed on the bottom end of the first rotating shaft (5), the bottom end of a second rotating shaft (7) is installed on the middle bearing of the top surface of the bottom plate (1), a second rotating disc (8) is fixedly installed on the top end of the second rotating shaft (7), the diameter of the second rotating disc (8) is larger than that of the first rotating disc (6), three clamping grooves (9) which are uniformly distributed are fixedly installed on the outer side of the top surface of the second rotating disc (8), a plurality of box bodies (10, be equipped with pivot (12) in box body (10), pass through torsional spring connection between the left side in pivot (12) left end and the box body (10) that corresponds, be connected through the bearing between pivot (12) right-hand member and the box body (10) that corresponds in the right side, be equipped with suspension wire (13) on pivot (12), suspension wire (13) one end and pivot (12) that correspond are at periphery middle part fixed connection, the through-hole (11) that correspond is passed to the suspension wire (13) other end is located the box body (10) that corresponds outside, suspension wire (13) and the cooperation of the through-hole (11) inner wall contact that corresponds, suspension wire (13) other end fixed mounting foil (14), foil (14) and draw-in groove (9) one-to-one, and foil (14) can insert in corresponding draw-in groove (9), foil (14) are located corresponding box body (10) bottom.

2. The three-wire pendulum experimental instrument capable of retracting and releasing the suspension wire according to claim 1, wherein: and a push-pull rod (15) is fixedly arranged in the middle of the outer side of the metal sheet (14).

3. The three-wire pendulum experimental instrument capable of retracting and releasing the suspension wire according to claim 2, wherein: the periphery of the push-pull rod (15) is provided with anti-skid grains.

4. The three-wire pendulum experimental instrument capable of retracting and releasing the suspension wire according to claim 1, wherein: ball-shaped grooves (16) are respectively formed in the left side and the right side of the inside of the through hole (11), balls (17) are arranged in the ball-shaped grooves (16) in a matched mode, the balls (17) can roll in the corresponding ball-shaped grooves (16), and the balls (17) are in contact fit with the corresponding suspension lines (13).

5. The three-wire pendulum experimental instrument capable of retracting and releasing the suspension wire according to claim 1, wherein: slots (18) are respectively formed in the left side and the right side of the top surface and the front side and the rear side of the metal sheet (14), inserting rods (19) are fixedly mounted on the left side and the right side of the bottom surface and the front side and the rear side of the bottom surface of the box body (10) respectively, the inserting rods (19) correspond to the slots (18) one by one, and the inserting rods (19) can be inserted into the corresponding slots (18).

6. The three-wire pendulum experimental instrument capable of retracting and releasing the suspension wire according to claim 1, wherein: and the surface of the torsion spring is galvanized.