Device for measuring gravitational acceleration

Abstract

The utility model relates to the technical field of physics teaching, and discloses a device for measuring gravitational acceleration, which comprises a base, the top of the base is fixedly connected with a support, the outer wall of the support is provided with an adjusting mechanism, the top of the adjusting mechanism is provided with a supporting plate, the top of the supporting plate is rotatably connected with an adjusting wheel disc, and the adjusting wheel disc is provided with a rotating shaft. A cycloid is wound around the outer ring of the adjusting wheel disc, and a metal ball is fixedly connected to the bottom end of the cycloid. According to the device for measuring the gravitational acceleration, through the arranged adjusting mechanism, after the device is adjusted to a proper position, a rotating block I is reversely rotated, so that an arc-shaped block can press and limit a bracket again, a sliding cylinder cannot move any more, the purpose of height adjustment is further achieved, the height of a supporting plate is convenient to adjust in the using process, and the use is convenient. Therefore, the device can be flexibly suitable for testing environments with different heights, is convenient for an operator to use in an adjusting process, facilitates the further development of gravitational acceleration measurement, and improves the flexible performance of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of physics teaching, in particular to a device for measuring gravity acceleration. Background Art

[0002] Gravitational acceleration refers to the effect of the Earth's gravitational acceleration on any object when it is in free fall. In scientific research and engineering applications, it is very important to measure the Earth's gravitational acceleration. A simple pendulum experimenter is an instrument used to study the motion of a simple pendulum. It usually consists of a pendulum, a weight, and a bracket.

[0003] A simple pendulum tester is used in the process of measuring gravity acceleration. However, the common simple pendulum tester is not convenient for adjusting the height of the bracket during use, and thus cannot be flexibly applied to test environments of different heights. It is not convenient for the operator to use it during the adjustment process, which makes it inconvenient to further carry out the work of measuring gravity acceleration, reducing the flexibility of the device. Utility Model Content

[0004] The purpose of the utility model is to provide a device for measuring gravity acceleration to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for measuring gravity acceleration, comprising a base, a bracket fixedly connected to the top of the base, an adjustment mechanism provided on the outer wall of the bracket, a support plate provided on the top of the adjustment mechanism, an adjustment wheel rotatably connected to the top of the support plate, a cycloid wound around the outer ring of the adjustment wheel, a metal ball fixedly connected to the bottom end of the cycloid, a dial fixedly connected to the top of the base, and a mounting mechanism provided at the bottom of the base;

[0006] The adjusting mechanism includes a sliding cylinder, which is movably connected to the outer wall of the bracket, the outer wall of the sliding cylinder is fixedly connected to a connecting sleeve, the bottom of the connecting sleeve is fixedly connected to a fixing box, the inner wall of the fixing box is rotatably connected to a second threaded rod, the outer wall of the second threaded rod is threadedly connected to a connecting plate, one side of the connecting plate is fixedly connected to a connecting shaft, and the end of the connecting shaft away from the connecting plate is fixedly connected to an arc block.

[0007] Preferably, a rotating hole is opened on the right side of the fixing box, and the second threaded rod is rotatably connected to the inner wall of the rotating hole, so as to provide stable support for the second threaded rod.

[0008] Preferably, the outer wall of the second threaded rod is fixedly connected with a rotating block, the threads of the outer walls at both ends of the second threaded rod are in opposite directions, and the connecting plate is slidably connected to the inner wall of the fixed box, so that the rotational motion of the second threaded rod is converted into the linear motion of the connecting plate.

[0009] Preferably, a long opening is provided on the front side of the fixing box, and the connecting plate passes through the long opening, so that the connecting plate can pass through the long opening and move.

[0010] Preferably, a moving opening is provided on the outer wall of the sliding cylinder, and the arc-shaped block passes through the moving opening, so that the arc-shaped block can move through the moving opening.

[0011] Preferably, the inner side of the arc block is provided with anti-slip grooves, and the inner side of the arc block is in close contact with the outer wall of the bracket, so as to further improve the stability of the adjustment.

[0012] Preferably, the mounting mechanism comprises a support frame, the support frame is fixedly connected to the bottom of the base, a clamping plate is slidably connected to the inner side of the support frame, and a threaded rod is rotatably connected to the bottom of the clamping plate to facilitate the installation of the base.

[0013] Preferably, the threaded rod 1 is threadedly connected to the bottom of the support frame, and the bottom end of the threaded rod 1 is fixedly connected to a rotating block 2 to facilitate driving the threaded rod 1 to rotate.

[0014] Compared with the prior art, the utility model provides a device for measuring gravitational acceleration, which has the following beneficial effects:

[0015] 1. The device for measuring gravity acceleration, through the setting of the adjustment mechanism, when adjusted to a suitable position, reversely rotates the rotating block 1, so that the arc block can again press and limit the bracket, so that the sliding cylinder can no longer move, thereby achieving the purpose of height adjustment. During use, it is convenient to adjust the height of the support plate, so that it can be flexibly applied to different height test environments. During the adjustment process, it is convenient for the operator to use it, which is convenient for further development of the work of measuring gravity acceleration and enhancing the flexibility of the device.

[0016] 2. The device for measuring gravitational acceleration uses an installation mechanism to clamp and limit the top of the clamping plate and the bottom of the experimental tabletop, so that the base can be stably supported on the experimental tabletop without easily causing deviation or shaking, thereby achieving a good experimental effect and ensuring the stability of the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor:

[0018] Figure 1 This is a front view of the structure of the utility model;

[0019] Figure 2 This is a bottom view of the structure of the utility model;

[0020] Figure 3 This is a rear view of the structure of the utility model;

[0021] Figure 4 It is a partial structural diagram of the regulating mechanism.

[0022] In the figure: 1. base; 2. dial; 3. support plate; 4. adjusting wheel; 5. cycloid; 6. metal ball; 7. adjusting mechanism; 71. sliding cylinder; 72. connecting sleeve; 73. fixing box; 74. threaded rod two; 75. connecting plate; 76. connecting shaft; 77. arc block; 8. mounting mechanism; 81. supporting frame; 82. pressing plate; 83. threaded rod one; 9. bracket. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] The utility model provides the following technical solutions:

[0026] Embodiment 1

[0027] Combination Figures 1 to 4 , a device for measuring gravity acceleration, comprising a base 1, a bracket 9 is fixedly connected to the top of the base 1, an adjustment mechanism 7 is arranged on the outer wall of the bracket 9, a support plate 3 is arranged on the top of the adjustment mechanism 7, an adjustment wheel 4 is rotatably connected to the top of the support plate 3, a cycloid 5 is wound around the outer ring of the adjustment wheel 4, a metal ball 6 is fixedly connected to the bottom end of the cycloid 5, a dial 2 is fixedly connected to the top of the base 1, and a mounting mechanism 8 is arranged at the bottom of the base 1;

[0028] The adjusting mechanism 7 includes a sliding cylinder 71, which is movably connected to the outer wall of the bracket 9. The outer wall of the sliding cylinder 71 is fixedly connected to a connecting sleeve 72, and the bottom of the connecting sleeve 72 is fixedly connected to a fixing box 73. The inner wall of the fixing box 73 is rotatably connected to a threaded rod 74, and the outer wall of the threaded rod 74 is threadedly connected to a connecting plate 75. A connecting shaft 76 is fixedly connected to one side of the connecting plate 75, and an arc block 77 is fixedly connected to the end of the connecting shaft 76 away from the connecting plate 75.

[0029] A rotating hole is provided on the right side of the fixing box 73 , and the threaded rod 74 is rotatably connected to the inner wall of the rotating hole, so as to provide stable support for the threaded rod 74 .

[0030] Furthermore, the outer wall of the threaded rod 2 74 is fixedly connected to the rotating block 1, the threads of the outer walls at both ends of the threaded rod 2 74 are in opposite directions, and the connecting plate 75 is slidably connected to the inner wall of the fixed box 73, so that the rotational motion of the threaded rod 2 74 is converted into the linear motion of the connecting plate 75.

[0031] Furthermore, a long opening is opened on the front side of the fixing box 73, and the connecting plate 75 passes through the long opening, so that the connecting plate 75 can pass through the long opening and move.

[0032] Furthermore, a moving opening is provided on the outer wall of the sliding cylinder 71 , and the arc block 77 passes through the moving opening, so that the arc block 77 can move through the moving opening.

[0033] Furthermore, the inner side of the arc block 77 is provided with anti-slip textures, and the inner side of the arc block 77 is in close contact with the outer wall of the bracket 9, further improving the stability of the adjustment.

[0034] Embodiment 2

[0035] See also Figures 1 to 4 On the basis of the first embodiment, the installation mechanism 8 further comprises a support frame 81, the support frame 81 is fixedly connected to the bottom of the base 1, a clamping plate 82 is slidably connected to the inner side of the support frame 81, and a threaded rod 83 is rotatably connected to the bottom of the clamping plate 82, so as to facilitate the installation of the base 1.

[0036] Furthermore, the threaded rod 83 is threadedly connected to the bottom of the support frame 81, and the bottom end of the threaded rod 83 is fixedly connected to a rotating block 2 to facilitate driving the threaded rod 83 to rotate.

[0037] In actual operation, when this device is used, the operator can first insert the support frame 81 into one side of the experimental desktop, and then turn the rotating block 2 to drive the threaded rod 1 83 to rotate. Since the support frame 81 and the threaded rod 1 83 are threadedly connected, and the clamping plate 82 can slide and limit on the inner side of the support frame 81, the threaded rod 1 83 will drive the clamping plate 82 to move upward, so that the top of the clamping plate 82 is clamped and limited with the bottom of the experimental desktop, so that the base 1 can be stably supported on the experimental desktop, and it will not easily produce deviation and shaking, so as to achieve a good experimental effect and ensure the stability of the experiment.

[0038] When it is necessary to adjust the height of the support plate 3, the rotating block 1 can be first rotated to drive the threaded rod 2 74 to rotate. Since the threads on the outer walls of the two ends of the threaded rod 2 74 are in opposite directions, the connecting plate 75 can drive the arc block 77 to move away from the bracket 9 through the connecting shaft 76, thereby canceling the clamping limit on the bracket 9. Then, the sliding cylinder 71 can be pushed upward to move so that the sliding cylinder 71 can slide on the outer wall of the bracket 9. When it is adjusted to a suitable position, the rotating block 1 is rotated in the opposite direction so that the arc block 77 can clamp and limit the bracket 9 again, so that the sliding cylinder 71 can no longer move, thereby achieving the purpose of height adjustment. During use, it is convenient to adjust the height of the support plate 3, and it can be flexibly applied to test environments of different heights. During the adjustment process, it is convenient for the operator to use it, which is convenient for the further development of the work of measuring gravity acceleration and enhancing the flexibility of the device.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A device for measuring gravitational acceleration, comprising a base (1) characterized in that: The top of the base (1) is fixedly connected to a bracket (9), the outer wall of the bracket (9) is provided with an adjustment mechanism (7), the top of the adjustment mechanism (7) is provided with a support plate (3), the top of the support plate (3) is rotatably connected to an adjustment wheel (4), the outer ring of the adjustment wheel (4) is wound with a cycloid (5), the bottom end of the cycloid (5) is fixedly connected to a metal ball (6), the top of the base (1) is fixedly connected to a dial (2), and the bottom of the base (1) is provided with a mounting mechanism (8); the adjustment mechanism (7) includes a sliding cylinder (71) The sliding cylinder (71) is movably connected to the outer wall of the bracket (9), the outer wall of the sliding cylinder (71) is fixedly connected to a connecting sleeve (72), the bottom of the connecting sleeve (72) is fixedly connected to a fixing box (73), the inner wall of the fixing box (73) is rotatably connected to a threaded rod 2 (74), the outer wall of the threaded rod 2 (74) is threadedly connected to a connecting plate (75), one side of the connecting plate (75) is fixedly connected to a connecting shaft (76), and the end of the connecting shaft (76) away from the connecting plate (75) is fixedly connected to an arc block (77).

2. The device for measuring gravitational acceleration according to claim 1, characterized in that: A rotating hole is provided on the right side of the fixing box (73), and the second threaded rod (74) is rotatably connected to the inner wall of the rotating hole.

3. The device for measuring gravitational acceleration according to claim 1, characterized in that: The outer wall of the second threaded rod (74) is fixedly connected to the first rotating block, the threads of the outer walls at both ends of the second threaded rod (74) are in opposite directions, and the connecting plate (75) is slidably connected to the inner wall of the fixed box (73).

4. The device for measuring gravitational acceleration according to claim 1, characterized in that: The front side of the fixing box (73) is provided with a long opening, and the connecting plate (75) passes through the long opening.

5. The device for measuring gravitational acceleration according to claim 1, characterized in that: The outer wall of the sliding cylinder (71) is provided with a moving opening, and the arc-shaped block (77) passes through the moving opening.

6. The device for measuring gravitational acceleration according to claim 1, characterized in that: The inner side of the arc-shaped block (77) is provided with anti-slip grooves, and the inner side of the arc-shaped block (77) is in close contact with the outer wall of the bracket (9).

7. The device for measuring gravitational acceleration according to claim 1, characterized in that: The mounting mechanism (8) comprises a support frame (81), the support frame (81) is fixedly connected to the bottom of the base (1), a clamping plate (82) is slidably connected to the inner side of the support frame (81), and a threaded rod (83) is rotatably connected to the bottom of the clamping plate (82).

8. The device for measuring gravitational acceleration according to claim 7, characterized in that: The threaded rod 1 (83) is threadedly connected to the bottom of the support frame (81), and the bottom end of the threaded rod 1 (83) is fixedly connected to the rotating block 2.

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