Centrifugal force testing device

Abstract

The utility model discloses a centrifugal force testing device, and belongs to the technical field of teaching experiment tools. A centrifugal force testing device comprises a frame body, a box body is arranged at the top of the frame body, a dynamometer is arranged in the box body, a traction rope is connected to the dynamometer, a bent pipe is rotationally connected to the bottom of the box body, and the end, away from the dynamometer, of the traction rope sequentially penetrates through the box body and the bent pipe and extends to the outer side of the bent pipe. A metal ball is connected to one end, far away from the bending pipe, of the traction rope outside the bending pipe; the end, away from the box body, of the bending pipe is rotationally connected with the motor through a rocker arm. According to the centrifugal force testing device, different metal ball centrifugal radiuses, metal ball weights or rotating speeds are selected, centrifugal force displayed on the dynamometer is read, the correlation between the metal ball centrifugal force and parameters such as the rotating radiuses, the weights or the rotating speeds is visually reflected, students can understand the correlation conveniently, and therefore the classroom teaching effect is improved.

Description

Technical Field

[0001] The present application relates to a centrifugal force testing device, belonging to the technical field of teaching experimental tools. Background Art

[0002] Centrifugal force is a fictitious force, or inertial force, that causes a rotating object to move away from its center of rotation. In common parlance, centrifugal force is not a real force. In Newtonian mechanics, centrifugal force was used to describe two different concepts: an inertial force observed in a non-inertial reference frame and the reaction of the centripetal force. Currently, most schools only teach centrifugal force by drawing diagrams on the blackboard and watching videos. Students rely on the teacher's explanations and their own imagination to understand, which fails to increase their interest in learning and results in suboptimal teaching outcomes. Furthermore, students' mechanical memorization of principles and conclusions leads to a lack of deep understanding of scientific principles and an inability to apply them flexibly.

[0003] Chinese utility model authorized patent CN205281912U discloses a centrifugal force demonstration teaching aid, including a cover, a box, a base, a switch, a motor, a rotating shaft, a turntable, a sleeve A, a ball A, a slot, a sleeve B, a ball B, a sleeve C, a ball C and a rotating buckle; the cover is connected to the box through a hinge; the four walls of the box are made of transparent material; a switch is provided on the base; the switch is divided into three buttons; a motor is provided at the center of the base; the motor is connected to the turntable through a rotating shaft; three sleeves are provided on the turntable; the sleeves are divided into sleeve A, sleeve B and sleeve C; the sleeve A is located on the left side of sleeve B; the sleeve C is located on the right side of sleeve B; the sleeve B is provided on the central axis of the turntable; the ball A is located in sleeve A; the ball B is located in sleeve B; the ball C is located in the sleeve; the slot is located on the left box wall; the rotating buckle is located on the cover. The centrifugal force demonstration teaching aid can intuitively demonstrate the relevant properties of centrifugal force; however, it cannot intuitively determine the magnitude of the centrifugal force. Students find it difficult to understand the correlation between centrifugal force and physical parameters such as weight, angular velocity, and centrifugal radius, resulting in unsatisfactory teaching results. Utility Model Content

[0004] In order to solve the above problems, this application proposes a centrifugal force testing device. By selecting different metal ball centrifugal radii, metal ball weights or rotation speeds, and reading the centrifugal force displayed on the dynamometer, it intuitively reflects the correlation between the centrifugal force of the metal ball and parameters such as rotation radius, weight or rotation speed, which is convenient for students to understand and thus improves the classroom teaching effect.

[0005] The utility model provides the following technical solutions:

[0006] A centrifugal force testing device comprises a frame, a box body is provided on the top of the frame, a dynamometer is provided in the box body, a traction rope is connected to the dynamometer, a bending tube is rotatably connected to the bottom of the box body, an end of the traction rope away from the dynamometer passes through the box body and the bending tube in sequence and extends to the outside of the bending tube, and a metal ball is connected to the end of the traction rope away from the bending tube outside the bending tube;

[0007] A motor is provided at the lower part of the frame, and one end of the bending tube away from the box body is rotatably connected to the motor through a rocker arm.

[0008] Optionally, a sliding bearing is further provided in the box body, and the sliding bearing is located below the dynamometer. The end of the sliding bearing away from the dynamometer is threadedly connected to the bending tube, and the end of the traction rope away from the dynamometer passes through the sliding bearing and the bending tube in sequence and extends to the outside of the bending tube.

[0009] Optionally, the traction rope includes a first rope body and a second rope body, and the first rope body and the second rope body are connected by a movable connection component.

[0010] Optionally, the movable connection assembly includes a lifting ring and a clamping ring, the clamping ring is connected to the lifting ring via a bolt, and the bolt is threadedly connected to the clamping ring.

[0011] Optionally, the clasp is connected to an end of the first rope away from the dynamometer, the metal ball is connected to an end of the second rope, and the lifting ring is connected to an end of the second rope away from the metal ball.

[0012] Optionally, one end of the rocker arm is fixedly connected to an end of the bending tube away from the sliding bearing, and the other end is detachably connected to the motor through a first connecting component and a second connecting component.

[0013] Optionally, the first connecting component includes an elastic clip, a slot and an elastic button, the output shaft of the motor includes a first connecting end and a second connecting end, the elastic clip is arranged on the first connecting end, and the end of the rocker arm away from the bending tube is provided with a plug-in tube, and the slot and the elastic button are arranged on the plug-in tube.

[0014] Optionally, the elastic buckle is snapped into the slot, and the elastic button is connected to the slot.

[0015] Optionally, the second connecting assembly includes a locking sleeve, a bolt and a nut, the locking sleeve is arranged at the connection between the second connecting end and the plug-in cylinder, the bolt passes through both ends of the locking sleeve and is locked by the nut.

[0016] Optionally, the outer sides of the second connecting end and the plug-in sleeve are both provided with a first protrusion and a first groove, the inner side of the locking sleeve is provided with a second protrusion and a second groove, the first protrusion is clamped in the second groove, and the second protrusion is clamped in the first groove.

[0017] The beneficial effects of this application include but are not limited to:

[0018] The centrifugal force testing device provided by the present application has a dynamometer connected by a traction rope so as to measure the centrifugal force generated by a metal ball in a circular motion in real time; the traction rope includes a first rope body and a second rope body that are movably connected so as to adjust the length of the traction rope and the weight of the metal ball, thereby being able to test the centrifugal force under different conditions; the traction rope is connected to the motor through a bending tube and a rocker arm, so that the traction rope can perform circular motion together with the bending tube and the rocker arm, making the whole process more stable and the measurement accuracy higher; the detachable connection between the bending tube and the box body and the detachable connection between the rocker arm and the motor not only achieves a tight connection between the bending tube and the box body and between the motor and the rocker arm, thereby improving the accuracy and reliability of the test, but also is easy to assemble and disassemble, flexible to use, ensuring the smooth operation of the device while facilitating subsequent maintenance and replacement of parts. The centrifugal force testing device can select different metal ball centrifugal radius, metal ball weight or rotation speed, and by reading the centrifugal force displayed on the dynamometer, it intuitively reflects the correlation between the metal ball centrifugal force and parameters such as rotation radius, weight or rotation speed, which is conducive to students' understanding of knowledge. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0020] Figure 1 Schematic diagram of the structure of the centrifugal force testing device involved in the embodiment of the present application;

[0021] Figure 2 This is a structural diagram of a first connection component involved in an embodiment of the present application;

[0022] Figure 3 This is a structural diagram of a second connection component involved in an embodiment of the present application;

[0023] Figure 4 for Figure 1 A magnified schematic diagram of area A in the middle;

[0024] Figure 5 for Figure 1 A magnified schematic diagram of area B in the middle;

[0025] List of parts and reference numerals:

[0026] 1. Frame, 2. Box, 3. Dynamometer, 4. Bending tube, 5. Metal ball, 6. Motor, 7. Rocker arm, 8. Sliding bearing, 9. First rope, 10. Second rope, 11. Lifting ring, 12. Snap ring, 13. Elastic buckle, 14. Slot, 15. Elastic button, 16. First connecting end, 17. Second connecting end, 18. Connecting tube, 19. Locking sleeve, 20. First protrusion, 21. First groove, 22. Second protrusion, 23. Second groove. DETAILED DESCRIPTION

[0027] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0028] In order to more clearly understand the above-mentioned objects, features and advantages of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other in the absence of conflict.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0030] In addition, in the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0032] In this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0033] In this application, unless otherwise expressly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0034] Reference Figure 1-5 , introduces the centrifugal force testing device according to the present application.

[0035] According to the centrifugal force testing device of this embodiment, it includes a frame 1, a box body 2 is provided on the top of the frame 1, a dynamometer 3 is provided in the box body 2, and a traction rope is connected to the dynamometer 3 so as to measure the centrifugal force generated by the metal ball 5 in the circular motion in real time; a bending tube 4 is rotatably connected to the bottom of the box body 2, and the end of the traction rope away from the dynamometer 3 passes through the box body 2 and the bending tube 4 in sequence and extends to the outside of the bending tube 4. The traction rope performs circular motion together with the bending tube 4, which makes the whole process smoother and the measurement accuracy higher; the end of the traction rope away from the bending tube 4 outside the bending tube 4 is connected to the metal ball 5, which has a complete structure and is convenient for real-time observation and recording of the motion trajectory and state of the metal ball 5, thereby improving the accuracy of the experiment;

[0036] A motor 6 is provided at the lower part of the frame 1 , and the end of the bending tube 4 away from the box body 2 is rotationally connected to the motor 6 through a rocker arm 7 . The structure is compact and reliable, and accurate control of the rotation speed of the metal ball 5 is achieved.

[0037] In the present invention, the top of the box body 2 is an opening and closing structure, which makes it easy to take out and put away the dynamometer 3 and the first rope body 9, thereby improving the convenience of use.

[0038] As an embodiment, a sliding bearing 8 is also provided in the box body 2. The sliding bearing 8 is located below the dynamometer 3. The end of the sliding bearing 8 away from the dynamometer 3 is threadedly connected to the bending tube 4. The end of the traction rope away from the dynamometer 3 passes through the sliding bearing 8 and the bending tube 4 in sequence and extends to the outside of the bending tube 4, ensuring that the bending tube 4 remains stable during rotation, reducing vibration and shaking, and improving the accuracy of the centrifugal force test.

[0039] It can be understood that in order to allow the traction rope to pass through the sliding bearing 8, the shaft neck of the sliding bearing 8 is a hollow structure, and the inner or outer side of the shaft neck away from the end of the dynamometer 3 has a thread so as to be threadedly connected to the bending tube 4; the bearing seat and bearing cover of the sliding bearing 8 connected by studs are embedded in the box body 2, so that the rotation of the bending tube 4 is more stable and reliable.

[0040] As an embodiment, the traction rope includes a first rope body 9 and a second rope body 10, and the first rope body 9 and the second rope body 10 are connected by a movable connection component. Such a configuration allows the length of the traction rope and the weight of the metal ball 5 to be adjusted, thereby being able to test the centrifugal force under different conditions.

[0041] In the present invention, the traction rope can be a steel wire rope or other inelastic rope, which is not limited here.

[0042] As an embodiment, the movable connection assembly includes a lifting ring 11 and a retaining ring 12. The retaining ring 12 is connected to the lifting ring 11 by bolts, and the bolts are threadedly connected to the retaining ring 12 to ensure that the connection between the lifting ring 11 and the retaining ring 12 is firm and reliable, and easy to assemble and disassemble, which is conducive to adjusting the experimental conditions.

[0043] As an embodiment, the snap ring 12 is connected to the end of the first rope 9 away from the dynamometer 3, the metal ball 5 is connected to one end of the second rope 10, and the lifting ring 11 is connected to the end of the second rope 10 away from the metal ball 5. This arrangement can facilitate the replacement of metal balls 5 of different weights and second ropes 10 of different lengths to meet various testing requirements, thereby improving the flexibility and adaptability of the device.

[0044] As an embodiment, one end of the rocker arm 7 is fixedly connected to the end of the bending tube 4 away from the sliding bearing 8, and the other end is detachably connected to the motor 6 through a first connecting component and a second connecting component. It is easy to assemble and disassemble and flexible to use, ensuring the smooth operation of the device while facilitating subsequent maintenance and replacement of parts.

[0045] As an embodiment, the first connecting component includes an elastic buckle 13, a slot 14 and an elastic button 15. The output shaft of the motor 6 includes a first connecting end 16 and a second connecting end 17. The elastic buckle 13 is arranged on the first connecting end 16. The end of the rocker arm 7 away from the bending tube 4 is provided with a plug-in tube 18. The slot 14 and the elastic button 15 are arranged on the plug-in tube 18, thereby realizing a tight connection between the output shaft of the motor 6 and the rocker arm 7, thereby improving the accuracy and reliability of the test.

[0046] As an embodiment, the elastic buckle 13 is snapped into the slot 14, and the elastic button 15 is connected to the slot 14, so that a reliable connection is formed between the motor 6 and the rocker arm 7, and it is convenient to quickly disassemble and assemble the two.

[0047] As an embodiment, the second connecting assembly includes a locking sleeve 19, a bolt and a nut. The locking sleeve 19 is sleeved at the connection between the second connecting end 17 and the plug-in tube 18. The bolt passes through both ends of the locking sleeve 19 and is locked by the nut, further enhancing the connection stability between the motor 6 and the rocker arm 7, so that it can better resist external impact and vibration, ensuring the smooth operation of the device.

[0048] As an embodiment, the outer sides of the second connecting end 17 and the plug-in tube 18 are provided with a first protrusion 20 and a first groove 21, and the inner side of the locking sleeve 19 is provided with a second protrusion 22 and a second groove 23. The first protrusion 20 is clamped in the second groove 23, and the second protrusion 22 is clamped in the first groove 21, which further improves the connection stability and reliability between the motor 6 and the rocker arm 7, and also has additional support and protection functions, which helps to extend the service life of the second connecting component.

[0049] It can be understood that the elastic buckle 13 includes an elastic member and a buckle, and the elastic member (such as a spring) is connected between the buckle and the first connecting end 16 to control the contraction and release of the buckle; the elastic button 15 includes an elastic member and a button, and the elastic member (such as a spring) is connected between the button and the plug-in tube 18, so that the button can produce a certain buffering and rebound effect when pressed, thereby improving the pressing comfort.

[0050] When in use, first select a metal ball 5 of appropriate weight and a second rope body 10 of appropriate length, connect the clamping ring 12 and the lifting ring 11 with bolts, so as to connect the first rope body 9 and the second rope body 10, then adjust the speed of the motor 6, and start the motor 6. Through the rotation of the rocker arm 7 and the bending tube 4, the metal ball 5 makes a circular motion in the frame 1. After the tension exerted on the metal ball 5 is transmitted to the dynamometer 3 through the traction rope, the quantitative relationship between the centrifugal force of the metal ball 5 and parameters such as the rotation radius, weight or speed can be obtained.

[0051] In the present invention, the motor 6 may be a variable frequency speed regulating motor 6 , which adjusts the speed of the motor 6 through a frequency converter, or may be other speed regulating motors 6 , which are not limited here.

[0052] In addition, the dynamometer 3 of the present application is equipped with a display screen, which is connected to the tension detection element of the dynamometer 3 and can intuitively display the magnitude of the centrifugal force. This display technology is an existing technology.

[0053] The various embodiments in this specification are described in a progressive manner. Similar parts between the various embodiments can be referred to in conjunction with each other. Each embodiment focuses on the differences between the other embodiments. In particular, the system embodiments are generally similar to the method embodiments, so the description is relatively simple. For relevant parts, refer to the description of the method embodiments.

[0054] The foregoing is merely an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A centrifugal force testing device, characterized in that: The invention comprises a frame, a box body is provided on the top of the frame, a dynamometer is provided in the box body, a traction rope is connected to the dynamometer, a bending tube is rotatably connected to the bottom of the box body, the end of the traction rope away from the dynamometer passes through the box body and the bending tube in sequence and extends to the outside of the bending tube, and a metal ball is connected to the end of the traction rope away from the bending tube outside the bending tube; A motor is provided at the lower part of the frame, and one end of the bending tube away from the box body is rotatably connected to the motor through a rocker arm.

2. The centrifugal force testing device according to claim 1, characterized in that: A sliding bearing is also provided in the box body, and the sliding bearing is located below the dynamometer. The end of the sliding bearing away from the dynamometer is threadedly connected to the bending tube. The end of the traction rope away from the dynamometer passes through the sliding bearing and the bending tube in sequence and extends to the outside of the bending tube.

3. The centrifugal force testing device according to claim 1, characterized in that: The traction rope includes a first rope body and a second rope body, and the first rope body and the second rope body are connected by a movable connection component.

4. The centrifugal force testing device according to claim 3, characterized in that: The movable connection assembly includes a lifting ring and a clamping ring. The clamping ring is connected to the lifting ring through a bolt, and the bolt is threadedly connected to the clamping ring.

5. The centrifugal force testing device according to claim 4, characterized in that: The clamping ring is connected to one end of the first rope body away from the dynamometer, the metal ball is connected to one end of the second rope body, and the lifting ring is connected to one end of the second rope body away from the metal ball.

6. The centrifugal force testing device according to claim 2, characterized in that: One end of the rocker arm is fixedly connected to the end of the bending tube away from the sliding bearing, and the other end is detachably connected to the motor through the first connecting component and the second connecting component.

7. The centrifugal force testing device according to claim 6, characterized in that: The first connecting component includes an elastic clip, a slot and an elastic button. The output shaft of the motor includes a first connecting end and a second connecting end. The elastic clip is arranged on the first connecting end. The end of the rocker arm away from the bending tube is provided with a plug-in tube. The slot and the elastic button are arranged on the plug-in tube.

8. The centrifugal force testing device according to claim 7, characterized in that: The elastic buckle is engaged in the card slot, and the elastic button is communicated with the card slot.

9. The centrifugal force testing device according to claim 7, characterized in that: The second connecting assembly includes a locking sleeve, a bolt and a nut. The locking sleeve is arranged at the connection between the second connecting end and the plug-in cylinder. The bolt passes through both ends of the locking sleeve and is locked by the nut.

10. The centrifugal force testing device according to claim 9, characterized in that: The outer sides of the second connecting end and the plug-in sleeve are both provided with a first protrusion and a first groove, the inner side of the locking sleeve is provided with a second protrusion and a second groove, the first protrusion is clamped in the second groove, and the second protrusion is clamped in the first groove.

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