Multi-mode excitation transmission force hammer

Abstract

The utility model relates to a multimode excitation transmission force hammer, and relates to the technical field of force hammer excitation. Comprising a hammer head, a hammer body, a hammer handle, a dynamic signal sensor and a wireless signal acquisition and transmission device, the dynamic signal sensor is arranged between the hammer head and the hammer body, and the hammer head, the dynamic signal sensor and the hammer body are connected through a double-end stud; the hammer handle is installed in a through hole in the middle of the hammer body, and the wireless signal collecting and transmitting device is installed at the end close to the tail of the taper shank and connected with the dynamic signal sensor through a signal line. The utility model has the advantages of simple structure, multi-mode excitation, wireless data transmission and lower cost; and the functions of multi-mode excitation and wireless excitation data transmission can be realized.

Description

Technical Field

[0001] This utility model relates to the field of force hammer excitation technology, specifically a multi-mode excitation transmission force hammer. Background Technology

[0002] To evaluate the performance and load-bearing capacity of structural components, non-destructive testing is often required. One type of testing involves measuring the component's structural dynamic parameters, such as frequency, damping, and mode shape. Comparing these parameters at different service stages allows for analysis of changes in the component's dynamic performance, thereby assessing its performance and load-bearing capacity.

[0003] To measure the structural dynamic parameters of a component, it is necessary to excite the component structure. Existing excitation methods generally include four types: environmental excitation method (also known as earth vibration method), vehicle vibration method (vehicles pass over the bridge at a certain speed, which can be divided into running car excitation, jumping car excitation, and braking excitation, etc.), hammer excitation method, and drop hammer excitation method.

[0004] Environmental vibration methods typically utilize earth pulsations to induce micro-vibrations in bridges, only capable of generating the fundamental frequency. In vehicle vibration methods, the bridge experiences small amplitude and rapid attenuation when a vehicle is driven over a wedge-shaped obstacle 15cm high, causing the wheels to impact the bridge surface; this method poses a significant potential hazard to older bridges. Braking vibration, similar in effect, utilizes the braking force generated when a vehicle brakes at a specific point on the bridge, causing vibration but potentially damaging the vehicle itself and posing a considerable risk to older bridges with unknown characteristics. Drop hammer vibration methods generally require large, complex, and costly devices, and can only induce vertical downward vibrations. These vibration methods have limited applicability and versatility, suitable only for vibrating bridges and larger structural components.

[0005] Currently, commonly used force hammers suffer from the following technical problems:

[0006] (1) Excitation data needs to be transmitted via wire, and dragging the transmission line has a significant impact on the excitation operation;

[0007] (2) It can only be operated manually, which is labor-intensive;

[0008] (3) It cannot be interchanged with excitation devices in multiple modes, thus limiting its versatility.

[0009] (4) It cannot wirelessly transmit excitation data, limiting its application and transmission distance.

[0010] Therefore, how to provide a multi-mode excitation transmission hammer has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0011] The purpose of this utility model is to solve at least one of the technical problems in the background art mentioned above, and to provide a multi-mode excitation transmission hammer, which has the advantages of simple structure, multi-mode excitation, wireless data transmission and low cost; it can realize the functions of multi-mode excitation and wireless transmission of excitation data.

[0012] To achieve the above objectives, this utility model provides a multi-mode excitation transmission hammer, comprising: a hammer head, a hammer body, a hammer handle, a dynamic signal sensor, and a wireless signal acquisition and transmission device;

[0013] The dynamic signal sensor is disposed between the hammer head and the hammer body, and the hammer head, the dynamic signal sensor and the hammer body are connected by a double-ended stud; the hammer handle is installed in the through hole in the middle of the hammer body, and the wireless signal acquisition and transmission device is installed at one end near the tail of the cone handle, and the wireless signal acquisition and transmission device is connected to the dynamic signal sensor through a signal line.

[0014] Furthermore, the hammer body is securely riveted to the hammer handle by a hammer handle expansion core.

[0015] Furthermore, it also includes a connecting block and a hammer handle signal line plug. The connecting block is fixed to the end of the hammer handle expansion core, and the hammer handle signal line plug is installed at the tail of the hammer handle. Both the connecting block and the hammer handle signal line plug are equipped with bidirectional connectors. The signal line connected to the dynamic signal sensor is connected to the wireless signal acquisition and transmission device in sequence through two bidirectional connectors.

[0016] Furthermore, it also includes a counterweight, which is mounted on the tail of the hammer body by connecting bolts.

[0017] Furthermore, it also includes a clamping device, on the outer circumference of which a fixing plate is welded, and the wireless signal acquisition and transmission device is fastened to the fixing plate. The clamping device is equipped with an open bushing, which is tightly fixed to one end near the tail of the hammer handle.

[0018] The beneficial effects of this utility model are as follows:

[0019] This invention provides a multi-mode excitation transmission hammer, capable of multi-mode excitation and wireless signal transmission. During hammer excitation, the wireless signal collector experiences minimal impact and interference. Switching between multiple excitation modes is convenient and operation is simple. The hammer handle and hammer body are connected using a riveting method, ensuring a firm and reliable connection. The connection between the hammer handle end and the device can be achieved using a slotted through-hole clamping method and screw fastening, providing high clamping force and reliable connection. This hammer enables multi-mode excitation, improving signal acquisition efficiency, stability, and reliability. Its wireless transmission function extends the overall service life of the hammer. Attached Figure Description

[0020] Figure 1This is a cross-sectional view of the hammer head of a multi-mode excitation transmission force hammer according to one embodiment.

[0021] Figure 2 This is a technical diagram of a multi-mode excitation transmission force hammer in one of the embodiments;

[0022] Figure 3 A schematic diagram of a manually held, vibratory lifting hammer.

[0023] Figure 4 A schematic diagram of force hammer excitation in manual hand-held excitation mode;

[0024] Figure 5 A schematic diagram of an electrically controlled lifting hammer for a pendulum excitation mode;

[0025] Figure 6 A schematic diagram of the release force hammer being excited in the pendulum excitation mode;

[0026] Figure 7 This is a technical diagram of another multi-mode excitation transmission hammer in the embodiment (the wireless signal acquisition and transmission device is not fixed on the hammer handle);

[0027] In the figure:

[0028] 1. Hammer head; 2. Double-ended stud; 3. Dynamic signal sensor; 4. Signal cable; 5. Two-way connector; 6. Connecting block; 7. Hammer handle expansion core; 8. Hammer body; 9. Counterweight; 10. Connecting bolt; 11. Hammer handle; 12. Open bushing; 13. Clamping device; 14. Fixing plate; 15. Wireless signal acquisition and transmission device; 16. Hammer handle signal cable plug. Detailed Implementation

[0029] The technical solutions in the embodiments of this utility model are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0031] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0032] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0033] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0034] like Figure 1-7 As shown, this utility model provides a multi-mode excitation transmission hammer, including: hammer head 1, hammer body 8, hammer handle 11, dynamic signal sensor 3, and wireless signal acquisition and transmission device 15;

[0035] The dynamic signal sensor 3 is disposed between the hammer head 1 and the hammer body 8, and the hammer head 1, dynamic signal sensor 3, and hammer body 8 are connected by double-ended studs 2. The hammer handle 11 is installed in a through hole in the middle of the hammer body 8, and the wireless signal acquisition and transmission device 15 is installed at one end near the tail of the handle. The wireless signal acquisition and transmission device 15 is connected to the dynamic signal sensor 3 via a signal line 4, and is used for internal wired transmission and wireless transmission of excitation signals to the outside. The wireless signal acquisition and transmission device 15 has signal amplification, information processing, and wireless transmission functions. It amplifies and processes the excitation force signal acquired from the dynamic signal sensor 3, and wirelessly transmits the data to the upper-level control center through the wireless transmission function.

[0036] The technical solution is further optimized. The hammer body 8 is firmly riveted to the hammer handle 11 by the expansion core 7, and the riveting is firm, reliable and not easy to loosen or fall off.

[0037] This utility model also includes a connecting block 6 and a hammer handle signal line plug 16. The connecting block 6 is fixed to the end of the expansion core 7 of the hammer handle 11, and the hammer handle signal line plug 16 is installed at the tail of the hammer handle 11. Both the connecting block 6 and the hammer handle signal line plug 16 are equipped with bidirectional connectors 5. The signal line 4 connected to the dynamic signal sensor 3 is connected to the wireless signal acquisition and transmission device 15 in sequence through two bidirectional connectors 5.

[0038] This utility model also includes a counterweight 9, which is installed at the tail of the hammer body 8 by a connecting bolt 10.

[0039] This utility model also includes a clamping device 13, on which a fixing plate 14 is welded. The wireless signal acquisition and transmission device 15 is fastened to the fixing plate 14. An open bushing 12 is installed inside the clamping device 13 and is tightly fixed to one end near the tail of the hammer handle 11. In terms of structural layout, fixing the wireless signal acquisition and transmission device 15 at a distance from the tail of the hammer handle 11 facilitates handheld vibration, such as... Figure 3 and Figure 4 As shown, secondly, it can be quickly installed on other excitation devices, such as... Figure 5 and Figure 6 The pendulum device shown is designed to minimize impact and interference when the hammer vibrates bridges and structural components, thereby improving the efficiency, stability, and reliability of signal acquisition and wireless transmission, and extending the service life of the hammer.

[0040] This invention has two excitation modes: one is to use a handheld hammer to manually excite bridges and structural components of any size, and to reach narrow and complex spaces that cannot be accessed by other excitation devices; the other is that the hammer can be quickly and easily installed in some excitation devices to excite bridges and large and medium-sized structural components, and through power control, to realize automated or semi-automated excitation of bridges and large and medium-sized structural components.

[0041] This invention provides a multi-mode excitation transmission hammer, capable of multi-mode excitation and wireless signal transmission. During hammer excitation, the wireless signal acquisition and transmission devices experience minimal impact and interference. Switching between modes is convenient and operation is simple. The hammer handle and hammer body are connected firmly and reliably using a riveting method. This improves signal acquisition efficiency, stability, and reliability, and extends the overall service life of the hammer. This multi-mode excitation wireless transmission hammer can be used for handheld excitation of structural components or installed in devices such as pendulums for electrically controlled excitation, possessing both multi-mode excitation and wireless transmission functions.

[0042] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A multi-mode excitation transmission force hammer, characterized in that, include: Hammer head, hammer body, hammer handle, dynamic signal sensor, and wireless signal acquisition and transmission device; The dynamic signal sensor is disposed between the hammer head and the hammer body, and the hammer head, the dynamic signal sensor and the hammer body are connected by a double-ended stud; the hammer handle is installed in the through hole in the middle of the hammer body, and the wireless signal acquisition and transmission device is installed at one end near the tail of the cone handle, and the wireless signal acquisition and transmission device is connected to the dynamic signal sensor through a signal line.

2. The multi-mode excitation transmission hammer as described in claim 1, characterized in that, The hammer body is securely riveted to the hammer handle by a hammer handle expansion core.

3. The multi-mode excitation transmission hammer as described in claim 2, characterized in that, It also includes a connecting block and a hammer handle signal line plug. The connecting block is fixed to the end of the hammer handle expansion core, and the hammer handle signal line plug is installed at the tail of the hammer handle. Both the connecting block and the hammer handle signal line plug are equipped with bidirectional connectors. The signal line connected to the dynamic signal sensor is connected to the wireless signal acquisition and transmission device in sequence through two bidirectional connectors.

4. The multi-mode excitation transmission force hammer as described in claim 1, characterized in that, It also includes a counterweight, which is mounted on the tail of the hammer body by connecting bolts.

5. A multi-mode excitation transmission force hammer as described in claim 1, characterized in that, It also includes a clamping device, on which a fixing plate is welded to the outer circumference. The wireless signal acquisition and transmission device is fastened to the fixing plate. The clamping device has an open bushing inside, which is tightly fixed to one end near the tail of the hammer handle.

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