Pendulum bob period testing device

Abstract

The embodiment of the utility model provides a pendulum bob period testing device, and the device comprises a base station which is used for being disposed on a supporting surface; the first bracket is arranged on the base station; the first testing assembly comprises an encoder and a controller, the encoder is installed on the first support and electrically connected with the controller, the encoder is provided with a connecting shaft capable of rotating relatively, the connecting shaft is used for being connected with one end of the pendulum bob, and when the pendulum bob swings relative to the encoder, the encoder sends an electric signal to the controller; the controller determines the swing period of the pendulum bob according to the electric signal. The connecting shaft of the encoder is connected with one end of the pendulum bob, so that swinging of the pendulum bob can be detected through the encoder, the swinging of the pendulum bob is converted into an electric signal to be sent to the controller, the swinging period of the pendulum bob can be calculated through timing of the controller after the pendulum bob completes the set swinging times, manual timing and counting are not needed, and the working efficiency is improved. Errors caused by manual testing can be avoided, and the testing accuracy of the swing period is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pendulum testing, in particular to a pendulum period testing device. Background Art

[0002] A pendulum impact tester is an instrument used to measure the impact toughness of non-metallic and metallic materials, such as plastics. The performance of the pendulum determines the accuracy of the test, with key parameters including torque, initial potential energy, strike center distance, swing period, and strike speed. Currently, these parameters are measured and calculated manually, resulting in low test efficiency and prone to human error. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a pendulum period testing device with high testing efficiency and smaller error.

[0004] An embodiment of the present utility model provides a pendulum period testing device, which includes: a base for being set on a supporting surface; a first bracket for being set on the base; a first testing component, including an encoder and a controller, wherein the encoder is mounted on the first bracket and is electrically connected to the controller, the encoder is provided with a relatively rotatable connecting shaft, the connecting shaft is used to be connected to one end of the pendulum, when the pendulum swings relative to the encoder, the encoder sends an electrical signal to the controller, and the controller determines the swing period of the pendulum based on the electrical signal.

[0005] The pendulum cycle test device provided by the embodiment of the present utility model has at least the following beneficial effects:

[0006] By setting up a first bracket and an encoder, the connecting shaft of the encoder is connected to one end of the pendulum, so that the swing of the pendulum can be detected by the encoder, and the swing of the pendulum is converted into an electrical signal and sent to the controller. After the pendulum completes the set number of swings, the swing period of the pendulum can be calculated through the timing of the controller, thereby eliminating the need for manual timing and counting, avoiding errors caused by manual testing, and improving the test accuracy of the swing period.

[0007] In an example of this implementation manner, the encoder is fixed to one side of the first bracket in the horizontal direction, and a reinforcing rib is provided on a side of the first bracket facing away from the encoder.

[0008] In an example of this embodiment, the reinforcing rib extends from the top to the bottom of the first bracket and is connected to the base.

[0009] In one embodiment of this implementation, the pendulum period testing device includes a second bracket, a rotating shaft and a second test assembly, the second bracket is arranged on a base, the rotating shaft is rotatably connected to the second bracket, and is used to connect one end of the pendulum, the second test assembly includes a sliding structure and a sensing structure, the sliding structure is slidably connected to the base, the sensing structure is installed on the sliding structure, and is used to abut against the other end of the pendulum to make the pendulum in a horizontal state.

[0010] In an embodiment of this embodiment, the base is provided with a slide groove, the sliding structure slides in cooperation with the slide groove, the extension direction of the slide groove is horizontal and perpendicular to the axis of rotation of the rotation shaft relative to the second bracket.

[0011] In an example of this embodiment, the sliding structure includes a first slider, the first slider abuts against the top surface of the base and extends into the sliding groove, and the sensing structure is installed on the first slider.

[0012] In one embodiment of this embodiment, the sliding structure includes a second slider and a locking member, the second slider abuts against the bottom surface of the base and extends into the slide groove, the first slider and the second slider are opposite to each other and have a spacing distance, and the locking member connects the first slider and the second slider.

[0013] In an embodiment of this embodiment, the first sliding block is provided with a through hole, the second sliding block is provided with a threaded hole, and the locking member passes through the through hole and is threadedly engaged with the threaded hole.

[0014] In an embodiment of this embodiment, the pendulum period testing device includes a plurality of supporting feet, which are mounted on the base and can move vertically relative to the base, and are used to abut against the supporting surface.

[0015] In an example of this embodiment, the pendulum period testing device includes a level, and the level is mounted on the base.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of a pendulum period testing device according to an embodiment of the present invention;

[0019] Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of the pendulum period test device from another perspective;

[0020] Figure 3 yes Figure 1 A schematic structural diagram of the base and the first test component in a disassembled state;

[0021] Figure 4 yes Figure 1 A schematic cross-sectional structural diagram of the first bracket, the rotating shaft and related components.

[0022] Reference numerals:

[0023] Pendulum period test device 100; base 10; slide 101; second bracket 20; mounting hole 201; rotating shaft 30; second test assembly 40; sliding structure 41; first slider 411; through hole 4111; second slider 412; threaded hole 4121; locking member 413; sensing structure 42; force sensor 421; support rod 422; abutment surface 4221; bearing 51; support foot 52; control console 53; first bracket 60; reinforcing rib 61; first test assembly 70; encoder 71; connecting shaft 711. DETAILED DESCRIPTION

[0024] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0025] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention 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. Therefore, they cannot be understood as limitations on the present invention.

[0026] In the description of this utility model, "several" means more than one, "plurality" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of the terms "first" and "second" is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0028] In the description of the present invention, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," 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 invention. In this specification, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0029] See also Figure 1 and Figure 2 , Figure 1 1 is a schematic diagram of the three-dimensional structure of a pendulum period testing device 100 according to an embodiment of the present invention; Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of the pendulum period test device 100 from another perspective. An embodiment of the utility model provides a pendulum period test device 100, which includes a base 10, a first bracket 60 and a first test assembly 70. The base 10 is used to be set on a support surface, and the first bracket 60 is set on the base 10. The first test assembly 70 includes an encoder 71, which is mounted on the first bracket 60 and electrically connected to the controller. The encoder 71 is provided with a relatively rotatable connecting shaft 711, and the connecting shaft 711 is used to be connected to one end of the pendulum. When the pendulum swings relative to the encoder 71, the encoder 71 sends an electrical signal to the controller, and the controller determines the swing period of the pendulum based on the electrical signal.

[0030] Specifically, the pendulum period tester 100 further includes a console 53, within which a controller is housed. During testing, one end of the pendulum is first mounted on the connecting shaft 711. The angle is then reset to zero using the console 53 while the pendulum is stationary. By observing the angle displayed on the console 53, the pendulum is manually raised to approximately 5 degrees and then released. The pendulum is then allowed to swing about the connecting shaft 711 of the encoder 71. After the pendulum completes the set number of swings, the controller's timing can be used to calculate the pendulum's swing period. This eliminates the need for manual timing and counting, avoids errors caused by manual testing, and improves the accuracy of swing period testing.

[0031] By setting the first bracket 60 and the encoder 71, the connecting shaft 711 of the encoder 71 is connected to one end of the pendulum, so that the swing of the pendulum can be detected by the encoder 71, and the swing of the pendulum is converted into an electrical signal and sent to the controller. After the pendulum completes the set number of swings, the swing period of the pendulum can be calculated through the timing of the controller, thereby eliminating the need for manual timing and counting, avoiding errors caused by manual testing, and improving the test accuracy of the swing period.

[0032] In one embodiment of this embodiment, please refer to Figure 1 and Figure 2 , the encoder 71 is fixed to one side of the first bracket 60 in the horizontal direction, and a reinforcing rib 61 is provided on the side of the first bracket 60 facing away from the encoder 71. It is understandable that, due to the need to reserve sufficient swing space for the pendulum, the first bracket 60 is usually set to have a higher height relative to the base 10, and the weight of the pendulum is generally large, which can easily lead to looseness between the first bracket 60 and the base 10, or deformation of the first bracket 60, or deformation of the connecting shaft 711 of the encoder 71, affecting the reliability of the test results of the pendulum's swing period. By providing a reinforcing rib 61 on the side of the first bracket 60 facing away from the encoder 71, the structural strength of the first bracket 60 can be improved, and the test reliability of the pendulum's swing period can be improved.

[0033] In one embodiment of this embodiment, please refer to Figure 1 and Figure 2 The reinforcing rib 61 extends from the top to the bottom of the first bracket 60 and is connected to the base 10. This arrangement can effectively improve the connection strength between the first bracket 60 and the base 10 and reduce the risk of loosening of the first bracket 60 and the base 10.

[0034] In one embodiment of this embodiment, please refer to Figure 1 and Figure 2 The pendulum period test device 100 includes a second bracket 20, a rotating shaft 30, and a second test assembly 40. The second bracket 20 is mounted on a base 10. The rotating shaft 30 is rotatably connected to the second bracket 20 and is used to connect one end of the pendulum. The second test assembly 40 includes a sliding structure 41 and a sensing structure 42. The sliding structure 41 is slidably connected to the base 10. The sensing structure 42 is mounted on the sliding structure 41 and is used to abut the other end of the pendulum to keep the pendulum in a horizontal state.

[0035] Specifically, the supporting surface can be selected as the ground, a wall or the surface of other equipment. The axis of relative rotation between the rotating shaft 30 and the second bracket 20 is horizontal. It is understandable that when the pendulum is in a horizontal state, the sensing structure 42 can accurately obtain the gravity of the pendulum, and then accurately calculate the parameters such as the torque, initial potential energy, striking center distance and striking speed of the pendulum according to the length of the pendulum. In this embodiment, in order to improve the accuracy of the test, the abutment point of the sensing structure 42 and the pendulum and the connection position of the rotating shaft 30 and the pendulum are located in the same horizontal plane, thereby ensuring that the state of the pendulum when it is installed on the rotating shaft 30 and abuts against the sensing structure 42 is horizontal.

[0036] By setting a second bracket 20 and a rotating shaft 30 that are rotatably connected, the rotating shaft 30 is connected to one end of the pendulum, and a sensing structure 42 is set, and the sensing structure 42 is connected to the other end of the pendulum, the pendulum is in a horizontal state, so that the gravity of the pendulum can be obtained through the sensor, so as to further calculate parameters such as the torque, initial potential energy, striking center distance and striking speed of the pendulum. The test efficiency is high and the error is small. At the same time, a sliding structure 41 is set, and the sliding structure 41 can drive the sensing structure 42 to slide relative to the base 10, so as to adapt to the test of pendulums of different lengths, thereby improving the versatility of the test.

[0037] In one embodiment of this embodiment, please refer to Figure 1 and Figure 3 , Figure 3 yes Figure 1 Schematic diagram of the structure of the base 10 and the second test assembly 40 in a disassembled state. The base 10 is provided with a slide groove 101, and the sliding structure 41 slidably engages with the slide groove 101. The slide groove 101 extends horizontally and perpendicular to the axis of rotation of the rotation shaft 30 relative to the second bracket 20. This arrangement ensures that the slide groove 101 extends parallel to the horizontal extension direction of the pendulum after it is mounted on the rotation shaft 30. This allows the sliding structure 41 to slide within the slide groove 101 to change the position of the sensing structure 42, positioning it at the bottom side of the pendulum away from the rotation shaft 30, thereby accommodating the testing of pendulums of different lengths.

[0038] In one embodiment of this embodiment, please refer to Figure 1 and Figure 3The sliding structure 41 includes a first slider 411, which abuts the top surface of the base 10 and extends into the slide groove 101. The sensing structure 42 is mounted on the first slider 411. Specifically, the top surface of the base 10 is horizontal. The first slider 411 abuts the top surface of the base 10 and extends into the slide groove 101. This not only enables relative sliding of the sensing structure 42 and the base 10, but also restricts the vertical movement of the sensing structure 42 relative to the base 10, causing the pendulum to be unable to maintain a horizontal state, thereby affecting the test results.

[0039] In one embodiment of this embodiment, please refer to Figure 1 and Figure 3 The sliding structure 41 includes a second slider 412 and a locking member 413. The second slider 412 abuts the bottom surface of the base 10 and extends into the slide groove 101. The first slider 411 and the second slider 412 are opposite and separated by a distance. The locking member 413 connects the first slider 411 and the second slider 412. This configuration allows the locking member 413 to lock the first slider 411 and the second slider 412, limiting their vertical movement relative to the base 10, thereby ensuring test accuracy. Furthermore, the sliding structure 41 is relatively simple and easy to assemble and disassemble, which helps reduce costs.

[0040] In one embodiment of this embodiment, please refer to Figure 1 and Figure 3 The first slider 411 is provided with a through-hole 4111, and the second slider 412 is provided with a threaded hole 4121. The locking member 413 passes through the through-hole 4111 and is threadedly engaged with the threaded hole 4121. This arrangement facilitates adjustment of the tightening force between the first and second sliders 411, 412, and the base 10 via the locking member 413, thereby adjusting the friction and reducing the risk of loosening leading to inaccurate test results. Furthermore, the locking member 413 passes through the through-hole 4111 and is threadedly engaged with the threaded hole 4121, thereby mounting the first and second sliders 411, 412 on the base 10. Both the mounting method and structure are relatively simple.

[0041] In one embodiment of this embodiment, please refer to Figure 1 and Figure 3 The pendulum period test device 100 includes a ruler (not shown) mounted on the base 10, with the ruler extending in a direction parallel to the direction of the chute 101. By placing the ruler on the base 10, a worker can determine the length of the pendulum by reading the ruler, thereby facilitating the calculation of parameters such as the pendulum's torque, initial potential energy, striking center distance, and striking speed.

[0042] Specifically, the controller is electrically connected to the sensor structure 42. A worker can read the scale and input the vertical value to the console 53. The controller can then calculate the hammer's torque, initial potential energy, striking center distance, striking speed, and other parameters based on pre-set formulas. This arrangement can effectively improve testing efficiency.

[0043] In one embodiment of this embodiment, please refer to Figure 1 and Figure 3 The sensing structure 42 includes a force sensor 421 and a support rod 422. The force sensor 421 is fixed to the sliding structure 41. One end of the support rod 422 is connected to the force sensor 421, and the other end of the support rod 422 is used to abut the pendulum. With this arrangement, the weight of the pendulum can act on the force sensor 421 through the support rod 422, allowing the force sensor 421 to detect the weight of the pendulum.

[0044] In this embodiment, the fulcrum where the support rod 422 abuts against the pendulum is located on the same horizontal plane as the connection position where the pendulum is connected to the rotating shaft 30. In other embodiments, the support rod 422 can also be configured to be retractable to accommodate pendulums of different shapes.

[0045] In this embodiment, the contact surface 4221 between the support rod 422 and the pendulum is an arc surface, which can reduce the risk of the pendulum being damaged.

[0046] In one embodiment of this embodiment, please refer to Figure 1 and Figure 4 , Figure 4 yes Figure 1 The pendulum period test device 100 includes a bearing 51, the outer ring of which is fixed within the mounting hole 201, and the inner ring of which is fixedly connected to the rotating shaft 30. This arrangement, connecting the rotating shaft 30 to the second bracket 20 via the bearing 51, reduces friction during relative rotation between the rotating shaft 30 and the second bracket 20, thereby further improving test accuracy.

[0047] In one embodiment of this embodiment, please refer to Figure 1 and Figure 4 The number of the bearings 51 is two, and the two bearings 51 are spaced apart and arranged in the mounting hole 201. Such an arrangement can improve the stability of the connection between the rotating shaft 30 and the second bracket 20, and can better bear the load of the pendulum.

[0048] In one embodiment of this embodiment, please refer to Figure 1 and Figure 2The pendulum period test device 100 includes a plurality of support legs 52 mounted on the base 10 and capable of vertical movement relative to the base 10. The plurality of support legs 52 are configured to abut against the support surface. This arrangement facilitates adjustment of the levelness of the base 10 to ensure accurate testing.

[0049] In one embodiment of this embodiment, please refer to Figure 1 and Figure 2 The pendulum period test device 100 includes a level (not shown) mounted on the base 10. This arrangement allows the user to determine the levelness of the base 10 by observing the level, thus avoiding the possibility of significant errors in the pendulum test results when the base 10 is not level. The user can adjust the height of the support legs 52 based on the level's display to level the base 10.

[0050] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various modifications can be made within the scope of knowledge possessed by a person skilled in the art without departing from the spirit of the present invention. In addition, the embodiments of the present invention and the features of the embodiments can be combined with each other unless there is a conflict.

Claims

1. A pendulum period testing device, characterized in that: include: an abutment for setting on a support surface; A first bracket is arranged on the base; The first test component includes an encoder and a controller. The encoder is mounted on the first bracket and electrically connected to the controller. The encoder is provided with a relatively rotatable connecting shaft, and the connecting shaft is used to connect to one end of the pendulum. When the pendulum swings relative to the encoder, the encoder sends an electrical signal to the controller, and the controller determines the swing period of the pendulum based on the electrical signal.

2. The pendulum period testing device according to claim 1, characterized in that: The encoder is fixed to one side of the first bracket in the horizontal direction, and a reinforcing rib is provided on a side of the first bracket facing away from the encoder.

3. The pendulum period testing device according to claim 2, characterized in that: The reinforcing rib extends from the top to the bottom of the first bracket and is connected to the base.

4. The pendulum period testing device according to claim 1, characterized in that: The pendulum period testing device includes a second bracket, a rotating shaft and a second testing assembly. The second bracket is arranged on a base. The rotating shaft is rotatably connected to the second bracket and is used to connect one end of the pendulum. The second testing assembly includes a sliding structure and a sensing structure. The sliding structure is slidably connected to the base. The sensing structure is installed on the sliding structure and is used to abut against the other end of the pendulum to keep the pendulum in a horizontal state.

5. The pendulum period testing device according to claim 4, characterized in that: The base is provided with a slide groove, the sliding structure is slidably matched with the slide groove, and the extension direction of the slide groove is horizontal and perpendicular to the axis of rotation of the rotating shaft relative to the second bracket.

6. The pendulum period testing device according to claim 5, characterized in that: The sliding structure includes a first sliding block, the first sliding block abuts against the top surface of the base and extends into the sliding groove, and the sensing structure is installed on the first sliding block.

7. The pendulum period testing device according to claim 6, characterized in that: The sliding structure includes a second slider and a locking member. The second slider abuts against the bottom surface of the base and extends into the slide groove. The first slider and the second slider are opposite to each other and have a spacing distance. The locking member connects the first slider and the second slider.

8. The pendulum period testing device according to claim 7, characterized in that: The first sliding block is provided with a through hole, the second sliding block is provided with a threaded hole, and the locking member passes through the through hole and is threadably engaged with the threaded hole.

9. The pendulum period testing device according to claim 1, characterized in that: The pendulum period testing device includes a plurality of supporting feet, which are mounted on the base and can move vertically relative to the base, and are used to abut against the supporting surface.

10. The pendulum period testing device according to claim 1, characterized in that: The pendulum period testing device includes a level meter mounted on the base platform.

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