A vibration exciter for sensor detection

Abstract

The present application relates to the technical field of vibration excitation device, and particularly relates to a vibration exciter for sensor detection, comprising: a mounting frame body; a linear reciprocating knocking mechanism, which is installed on the mounting frame body and comprises a knocking rod and a return spring, the knocking rod being capable of reciprocating along the length direction of the knocking rod; a rotary driving assembly, which is installed on the mounting frame body and is adapted with a knocking driving member, the knocking driving member being capable of rotating around a first preset axis, and the knocking driving member being in transmission connection with the knocking rod at a first set position; wherein the knocking driving member is capable of driving the knocking rod to move along the length direction of the knocking rod and compress the return spring, and the knocking driving member is disconnected from the transmission connection with the knocking rod when the knocking driving member rotates to a second set position, and the knocking driving member is capable of rotating to the first set position cyclically. The present application can realize automatic knocking detection with large amplitude, large knocking force and different frequencies.

Description

Technical Field

[0001] This invention relates to the field of vibration equipment technology, and more specifically to a vibrator for sensor detection. Background Technology

[0002] Currently, in the testing of vibration, shock, and overload sensor signals in some weapon systems, manual tapping is mostly used, requiring additional manpower, and the effectiveness varies from person to person. To replace manual tapping, vibration excitation devices such as mobile phone vibrators and eccentric wheel motors can be used. When using such devices, the vibrator or motor must be placed on or near the sensor, and its vibration is controlled by switching the power supply on and off, thereby exciting the sensor and detecting its condition.

[0003] While vibration devices such as mobile phone vibrators and eccentric wheel motors can replace manual tapping, their vibration amplitude is very small. When the sensor has a large range or is far from the vibration device, it is difficult to detect the vibration signal, thus failing to achieve the purpose of automatic inspection. Furthermore, installing a vibration device near each sensor will increase the number of vibration devices and control leads, affecting the spatial layout of the test specimen and even the structural response of the test specimen. Summary of the Invention

[0004] To address the technical problem that existing vibration equipment has a small vibration amplitude, making it difficult to meet the requirements of automatic knocking inspection, this invention provides a vibrator for sensor detection. By driving the striking rod of the linear reciprocating striking mechanism through a rotary drive component, it can achieve automatic knocking inspection with large amplitude, large striking force, and different frequencies, replacing manual knocking inspection. This can save manpower, improve the consistency and comprehensiveness of the knocking effect, and avoid affecting the spatial layout and structural response of the test piece.

[0005] This invention is achieved through the following technical solution:

[0006] This invention provides a vibrator for sensor detection, comprising: a mounting frame; a linear reciprocating striking mechanism mounted on the mounting frame, including a striking rod and a return spring, the striking rod being capable of reciprocating along its own length direction, and the return spring being used to drive the striking rod to return to its original position; and a rotary drive assembly mounted on the mounting frame, adapted with a striking transmission component, the striking transmission component being capable of rotating around a first preset axis, and the striking transmission component being drively connected to the striking rod at a first preset position; wherein, under the action of the striking transmission component, the striking rod can be driven to move along its own length direction and compress the return spring, and when the striking transmission component rotates to a second preset position, the striking transmission component disconnects from the striking rod, and the striking transmission component can cyclically rotate back to the first preset position.

[0007] In an optional embodiment of this application, the striking rod includes: a sliding rod capable of reciprocating along its own length; and a first transmission arm disposed on one side of the sliding rod and extending radially along the sliding rod; wherein the first transmission arm is capable of abutting against the striking transmission member.

[0008] In an optional embodiment of this application, the outer end of the first transmission arm has an arc-shaped structure.

[0009] In an optional embodiment of this application, the reset spring is a cylindrical spring, and one end of the sliding rod is provided with a mounting protrusion, which is inserted into the corresponding end of the reset spring.

[0010] In an optional embodiment of this application, the linear reciprocating striking mechanism further includes a mounting slide, which is provided with a mounting groove; the length direction of the mounting groove is perpendicular to the first preset axis, the sliding rod is slidably engaged in the mounting groove, and the first transmission arm extends to the outside of the mounting slide.

[0011] In an optional embodiment of this application, the rotation drive assembly further includes a drive motor, which is mounted on the mounting frame, and the striking transmission component is mounted on the output shaft of the drive motor.

[0012] In an optional embodiment of this application, the striking transmission component includes a connecting sleeve, which is fixedly sleeved on the output shaft of the drive motor; a second transmission arm is provided on one side of the connecting sleeve, the second transmission arm extends radially along the connecting sleeve, and when the striking transmission component is in a first set position, the second transmission arm abuts against the first transmission arm.

[0013] In an optional embodiment of this application, the outer end of the second transmission arm has an arc-shaped structure.

[0014] In an optional embodiment of this application, the drive motor is a geared motor assembly with a selectable reduction ratio.

[0015] In an optional embodiment of this application, the mounting frame is a box structure and is fitted with a cover.

[0016] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0017] The vibrator for sensor detection provided by this invention includes a mounting frame, a linear reciprocating striking mechanism, and a rotary drive assembly. Both the linear reciprocating striking mechanism and the rotary drive assembly are mounted on the mounting frame. The linear reciprocating striking mechanism includes a striking rod and a return spring. The striking rod can reciprocate along its own length, and the return spring drives the striking rod to return to its original position. The rotary drive assembly is equipped with a striking transmission component. The striking transmission component can rotate around a first preset axis and is connected to the striking rod in a first preset position. Driving the striking transmission component to rotate drives the striking rod to move along its own length and compresses the return spring. When the striking transmission component rotates to a second preset position, the transmission connection between the striking transmission component and the striking rod is disconnected. At this point, the striking rod, driven by the elastic force of the return spring, strikes the striking rod instantly. The device strikes the bottom surface of the mounting frame. When the striking transmission component rotates to the first set position, it drives the striking rod to move again. Thus, the striking transmission component strikes once for every revolution of the striking transmission component. The striking control is simple, the frequency is easy to calculate, and the magnitude of the striking force depends on the stiffness coefficient of the return spring and the distance between the projections of the first and second set positions onto the length of the striking rod. This allows for the output of large striking force and large striking amplitude. The striking frequency can be selected according to actual needs by choosing the appropriate specifications of the rotary drive component to adapt to different automatic striking occasions. Therefore, this invention can achieve automatic striking inspection with large amplitude, large striking force, and different frequencies to replace manual striking inspection, saving manpower, improving the consistency and comprehensiveness of the striking effect, and avoiding affecting the spatial layout and structural response of the test piece. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] In the attached diagram:

[0020] Figure 1This is a cross-sectional structural schematic diagram of an exciter for sensor detection provided in an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the main structure of the cap provided in an embodiment of the present invention.

[0022] Figure 3 This is a front view schematic diagram of the striking rod provided in an embodiment of the present invention;

[0023] Figure 4 This is a top view of the striking rod provided in an embodiment of the present invention;

[0024] Figure 5 This is a cross-sectional view of the mounting slide provided in an embodiment of the present invention;

[0025] Figure 6 This is a side view of the mounting slide provided in an embodiment of the present invention;

[0026] Figure 7 A cross-sectional view of the striking transmission component provided in an embodiment of the present invention;

[0027] Figure 8 This is a top view of the striking transmission component provided in an embodiment of the present invention.

[0028] The attached figures include reference numerals and their corresponding component names:

[0029] 10- Mounting frame, 20- Striking rod, 21- Sliding rod, 22- First transmission arm, 23- Mounting protrusion, 30- Striking transmission component, 31- Connecting sleeve, 32- Second transmission arm, 40- Mounting slide, 41- Mounting groove, 50- Drive motor, 60- Cover, 70- Motor mounting bracket. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0032] It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0033] In the description of the embodiments of this application, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this application is usually placed in when in use, or the orientation or positional relationship that is commonly understood by those skilled in the art. It is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0034] In the description of this application, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] Example

[0036] Combination Figure 1 This embodiment provides a vibrator for sensor detection, comprising: a mounting frame 10; a linear reciprocating striking mechanism mounted on the mounting frame 10, including a striking rod 20 and a return spring, wherein the striking rod 20 is capable of reciprocating along its own length direction, and the return spring is used to drive the striking rod 20 to return to its original position; and a rotary drive assembly mounted on the mounting frame 10, adapted with a striking transmission component 30, wherein the striking transmission component 30 is capable of rotating around a first preset axis, and the striking transmission component 30 is connected to the striking rod 20 in a first preset position; wherein, under the action of the striking transmission component 30, the striking rod 20 is driven to move along its own length direction and compress the return spring, and when the striking transmission component 30 rotates to a second preset position, the striking transmission component 30 disconnects from the striking rod 20, and the striking transmission component 30 can cyclically rotate back to the first preset position.

[0037] Understandably, the mounting frame 10, as the main body for mounting the vibrator, only needs to be able to install the linear reciprocating striking mechanism and the rotary drive assembly in relative positions. It can be a frame structure, a rod-based frame structure, a box structure, etc. Combined with... Figure 2In this embodiment, the mounting frame 10 is a box structure, and the mounting frame 10 is equipped with a cover 60 to protect the moving parts of the vibrator and prevent foreign objects from entering the mounting frame 10. The mounting frame 10 is also provided with multiple mounting and positioning holes to facilitate fixing it to the test piece.

[0038] Combination Figure 3 and Figure 4 The striking rod 20 includes: a sliding rod 21 capable of reciprocating along its own length; and a first transmission arm 22 disposed on one side of the sliding rod 21 and extending radially along the sliding rod 21. The first transmission arm 22 is capable of abutting against the striking transmission member 30 to ensure that the striking rod can be connected to the striking transmission member 30 in a transmission manner.

[0039] To reduce the frictional resistance when the striking transmission component 30 rotates, the outer end of the first transmission arm 22 has an arc-shaped structure.

[0040] To ensure the stability of the reset spring installation, the reset spring is a cylindrical spring, and one end of the sliding rod 21 is provided with a mounting protrusion 23, which is inserted into the corresponding end of the reset spring.

[0041] Combination Figure 1 , Figure 5 and Figure 6 It should be understood that the linear reciprocating striking mechanism also includes a mounting slide 40, which is provided with a mounting groove 41; the length direction of the mounting groove 41 is perpendicular to the first preset axis, the sliding rod 21 is slidably engaged in the mounting groove 41, and the first transmission arm 22 extends to the outside of the mounting slide 40.

[0042] Correspondingly, the return spring is installed in the mounting groove 41. The spring constant is determined according to the usage requirements, i.e., the magnitude of the elastic force is selectable. The mounting protrusion 23 is inserted into the end of the return spring, and one end of the sliding rod 21 abuts against the return spring to confine it within the mounting groove 41. Simultaneously, under the elastic force of the return spring, the other end of the sliding rod 21 abuts against the bottom surface of the mounting frame 10. Furthermore, lubricating oil is applied to the mounting groove 41 to facilitate the sliding of the sliding rod 21 within the mounting groove 41.

[0043] Combined again Figure 1 The rotation drive assembly further includes a drive motor 50, which is mounted on the mounting frame 10, and the striking transmission component 30 is mounted on the output shaft of the drive motor 50.

[0044] Specifically, the drive motor 50 is a geared motor assembly, which improves the ability of the rotary drive assembly to compress the return spring by reducing speed. Similarly, the reduction ratio of the drive motor 50 is determined according to the usage requirements, such as 30:1. To facilitate the installation of the drive motor 50, this embodiment provides a motor mounting bracket 70 to fix the drive motor 50 to the mounting frame 10. At the same time, the connecting cable of the drive motor 50 passes through the mounting frame 10 through a connector (such as a J30J-9ZKP type connector).

[0045] Combination Figure 1 , Figure 7 and Figure 8 The striking transmission component 30 includes a connecting sleeve 31, which is fixedly sleeved on the output shaft of the drive motor 50. A second transmission arm 32 is provided on one side of the connecting sleeve 31. The second transmission arm 32 extends radially along the connecting sleeve 31, and when the striking transmission component 30 is in a first set position, the second transmission arm 32 abuts against the first transmission arm 22.

[0046] Specifically, the inner hole of the connecting sleeve 31 is provided with a flat sidewall to prevent the output shaft of the drive motor 50 from sliding relative to the striking transmission component 30. At the same time, the connecting sleeve 31 is fixedly mounted on the output shaft of the drive motor 50, for example, by using AB glue to prevent the striking transmission component 30 from loosening. Of course, other fixing adhesives can also be used, or fastening screws can be used for fastening.

[0047] Correspondingly, the outer end of the second transmission arm 32 is an arc-shaped structure to further reduce the frictional resistance when the striking transmission component 30 rotates.

[0048] In summary, the vibrator for sensor detection provided in this embodiment includes a mounting frame 10, a linear reciprocating striking mechanism, and a rotary drive assembly. Both the linear reciprocating striking mechanism and the rotary drive assembly are mounted on the mounting frame 10. The linear reciprocating striking mechanism includes a striking rod 20 and a return spring. The striking rod 20 can reciprocate along its own length direction, and the return spring is used to drive the striking rod 20 to return to its original position. The rotary drive assembly is equipped with a striking transmission component 30, which can rotate around a first preset axis and is connected to the striking rod 20 in a first preset position.

[0049] Power is supplied to the drive motor 50, which drives the striking transmission component 30 to rotate, thereby moving the striking rod 20 along its own length and compressing the return spring. When the striking transmission component 30 rotates to the second preset position, the transmission connection between the striking transmission component 30 and the striking rod 20 is disconnected. At this time, the striking rod 20, driven by the elastic force of the return spring, instantly strikes the bottom surface of the mounting frame 10, thus generating a strike. When the striking transmission component 30 rotates to the first preset position, it drives the striking rod 20 to move again.

[0050] Therefore, the striking transmission component 30 strikes once per revolution, making striking control simple and frequency easy to calculate. The striking force depends on the spring constant and the distance between the projections of the first and second set positions onto the striking rod 20 along its length, enabling the output of large striking force and amplitude. Furthermore, by increasing the spring force through a geared motor, the striking force can be amplified, making it easy for the testing system to detect the striking signal. The striking frequency, force, and amplitude can all be adjusted by selecting appropriate specifications for the return spring, geared motor, and striking transmission component 30 to suit different automatic striking applications.

[0051] In summary, the vibrator for sensor detection provided in this embodiment can achieve automatic knocking inspection with large amplitude, large impact force, and different frequencies, replacing manual knocking inspection. This can save manpower, improve the consistency and comprehensiveness of the impact effect, and avoid affecting the spatial layout and structural response of the test piece.

[0052] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An exciter for sensor detection, characterized in that, include: Mounting frame (10); A linear reciprocating striking mechanism is installed on the mounting frame (10) and includes a striking rod (20) and a return spring. The striking rod (20) can reciprocate along its own length direction, and the return spring is used to drive the striking rod (20) to return to its original position. A rotary drive assembly is mounted on the mounting frame (10) and is adapted to a striking transmission component (30). The striking transmission component (30) is capable of rotating around a first preset axis, and the striking transmission component (30) is connected to the striking rod (20) in a first preset position. Under the action of the striking transmission member (30), the striking rod (20) can be driven to move along its own length direction and compress the reset spring. When the striking transmission member (30) rotates to the second set position, the striking transmission member (30) disconnects the transmission connection with the striking rod (20), and the striking transmission member (30) can rotate cyclically to the first set position.

2. The exciter for sensor detection according to claim 1, characterized in that, The striking rod (20) includes: The sliding rod (21) can reciprocate along its own length. The first transmission arm (22) is disposed on one side of the sliding rod (21) and extends radially along the sliding rod (21); The first transmission arm (22) can abut against the striking transmission member (30).

3. The exciter for sensor detection according to claim 2, characterized in that, The outer end of the first transmission arm (22) has an arc-shaped structure.

4. The exciter for sensor detection according to claim 2, characterized in that, The reset spring is a cylindrical spring, and one end of the sliding rod (21) is provided with a mounting protrusion (23), which is inserted into the corresponding end of the reset spring.

5. The exciter for sensor detection according to claim 2, characterized in that, The linear reciprocating striking mechanism also includes a mounting slide (40), which is provided with a mounting groove (41). The length direction of the mounting groove (41) is perpendicular to the first preset axis, the sliding rod (21) is slidably engaged in the mounting groove (41), and the first transmission arm (22) extends to the outside of the mounting slide (40).

6. The exciter for sensor detection according to claim 2, characterized in that, The rotation drive assembly also includes a drive motor (50) mounted on the mounting frame (10), and the striking transmission component (30) mounted on the output shaft of the drive motor (50).

7. The exciter for sensor detection according to claim 6, characterized in that, The striking transmission component (30) includes a connecting sleeve (31), which is fixedly sleeved on the output shaft of the drive motor (50); A second transmission arm (32) is provided on one side of the connecting sleeve (31). The second transmission arm (32) extends radially along the connecting sleeve (31), and when the striking transmission member (30) is in the first set position, the second transmission arm (32) abuts against the first transmission arm (22).

8. The exciter for sensor detection according to claim 7, characterized in that, The outer end of the second transmission arm (32) has an arc-shaped structure.

9. The exciter for sensor detection according to claim 6, characterized in that, The drive motor (50) is a geared motor assembly.

10. The exciter for sensor detection according to any one of claims 1 to 9, characterized in that, The mounting frame (10) is a box structure and is equipped with a cover (60).

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