A new type of vibration measuring device for hydroelectric generating set

Abstract

The utility model discloses a novel hydroelectric generating set vibration measuring device relates to vibration measuring device field, including portable vibration measuring appearance main part, the lower end fixed mounting of portable vibration measuring appearance main part is used for the connecting fixed structure who is used for the fixed connection of user's finger and portable vibration measuring appearance main part, and connecting fixed structure contains installation base plate, support base plate, screw rod, handle, hard support plate, sponge pad, trapezoidal mounting block and trapezoidal sliding block, through setting up connecting fixed structure on portable vibration measuring appearance main part, when operating, can place one of the fingers between two sponge pads on two hard support plates, drive screw rod rotation through rotating handle, utilize the thread cooperation of screw rod and support base plate on the thread hole, push the movable hard support plate and move along the trapezoidal guide rail groove to the fixed hard support plate, realize the clamping of different thicknesses of fingers and fixed, effectively avoid the vibration measuring appearance in the process of using because of the hand sweating, equipment vibration conduction or environmental interference lead to on the user's hand sliding deviation.

Description

Technical Field

[0001] This utility model relates to the field of vibration measuring devices, and in particular to a novel vibration measuring device for hydropower units. Background Technology

[0002] As the core equipment of a hydropower system, the operating status of hydropower units directly affects the stability and security of power supply. During long-term high-load operation, critical components such as the impeller, main shaft, and bearings inside the unit are prone to abnormal vibration due to wear, assembly deviations, or fluid excitation. If not detected and addressed in a timely manner, this may lead to escalation of equipment failure, downtime for maintenance, or even safety accidents. Therefore, regular vibration testing of hydropower units is a core element in ensuring the healthy operation of the equipment. By acquiring key parameters such as vibration frequency and amplitude through vibration measuring devices, early warning and accurate diagnosis of potential unit faults can be achieved.

[0003] Portable vibration meters are widely used in the industry for vibration testing of hydropower units. Their compact size, ease of operation, and high accuracy make them a primary tool for on-site maintenance personnel. During use, personnel hold the vibratory meter and firmly press the measuring end against the surface of the hydropower unit being tested (such as bearing housings, main shaft housings, and other stable vibration transmission areas). Internal sensors convert the mechanical vibration signal into an electrical signal, which is then processed and output as test data. However, traditional portable vibration meters rely on a simple grip, using only the friction between the user's hand and the instrument. Hydropower unit operation sites often involve vibration transmission from the equipment itself and environmental interference, making the meter prone to slipping and shifting in the user's hand, especially when hands are sweaty. This can cause the measuring end to detach from the test surface or make poor contact, affecting the accuracy of the test data and potentially damaging the equipment if it slips. Utility Model Content

[0004] The main objective of this invention is to provide a novel vibration measuring device for hydropower units, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A novel vibration measuring device for hydropower units includes a portable vibration meter body. A connecting and fixing structure for fixing a user's finger to the portable vibration meter body is fixedly installed at the lower end of the portable vibration meter body. The connecting and fixing structure includes a mounting base plate, a support base plate, a lead screw, a handle, a rigid support plate, a sponge pad, a trapezoidal mounting block, and a trapezoidal slider. The support base plate is fixedly installed on one side of the lower end of the mounting base plate. The lead screw is installed on the support base plate, and the handle is fixedly installed on the outer end of the lead screw. There are two rigid support plates; one rigid support plate is fixedly installed on the other side of the lower end of the mounting base plate, and the other rigid support plate is rotatably connected to the inner end of the lead screw. There are two sponge pads, each installed on the inner end of one of the two rigid support plates. There are two trapezoidal mounting blocks, each fixedly installed on the outer end of one of the two sponge pads. The trapezoidal mounting blocks are also installed inside the rigid support plates. The trapezoidal slider is fixedly installed on the upper end of the rigid support plate mounted on the lead screw, and the trapezoidal slider is also slidably installed inside the mounting base plate.

[0007] Preferably, a detection structure is installed at one end of the portable vibration meter body.

[0008] Preferably, the mounting base plate on the connecting and fixing structure is fixedly mounted on the lower end of the portable vibration meter body by screws, and the lower end of the mounting base plate is provided with a trapezoidal guide rail groove.

[0009] Preferably, the support substrate and the mounting substrate are integrally formed, and the support substrate has a threaded hole that penetrates the inside and outside of the support substrate.

[0010] Preferably, the lead screw is installed in a threaded hole on the support base plate, and a rigid support plate mounted on the lead screw is movably installed between the support base plate and another rigid support plate. The inner end of the rigid support plate is provided with a trapezoidal mounting groove, and the trapezoidal mounting block is installed in the trapezoidal mounting groove.

[0011] Preferably, the trapezoidal slider is slidably mounted in a trapezoidal guide groove opened at the lower end of the mounting base plate.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] By incorporating a connection and fixing structure consisting of a mounting base plate, a support base plate, a lead screw, a handle, a rigid support plate, a sponge pad, a trapezoidal mounting block, and a trapezoidal slider on the main body of the portable vibration meter, the user can place one finger between two sponge pads on the two rigid support plates during operation. By rotating the handle, the lead screw is rotated, and the threaded engagement between the lead screw and the threaded hole on the support base plate pushes the movable rigid support plate along the trapezoidal guide groove towards the fixed rigid support plate. This clamps and fixes fingers of different sizes, effectively preventing the vibration meter from sliding or shifting in the user's hand due to sweaty hands, equipment vibration transmission, or environmental interference during use. This ensures that the detection structure and the unit's detection surface always maintain a tight and stable contact, significantly improving the accuracy of the detection data. Attached Figure Description

[0014] Figure 1 This is a top view of the overall structure of this utility model;

[0015] Figure 2 This is a bottom view of the overall structure of this utility model;

[0016] Figure 3 This is an exploded view of the connection and fixing structure of this utility model.

[0017] In the diagram: 1. Portable vibration meter body; 2. Connecting and fixing structure; 3. Detection structure; 4. Mounting base plate; 5. Trapezoidal guide rail groove; 6. Support base plate; 7. Threaded hole; 8. Lead screw; 9. Handle; 10. Rigid support plate; 11. Trapezoidal mounting groove; 12. Sponge pad; 13. Trapezoidal mounting block; 14. Trapezoidal slider. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] Please see Figure 1 - Figure 3As shown, a novel vibration measuring device for hydropower units includes a portable vibration meter body 1. A connecting and fixing structure 2 for fixing a user's finger to the portable vibration meter body 1 is fixedly installed at the lower end of the portable vibration meter body 1. The connecting and fixing structure 2 includes a mounting base plate 4, a support base plate 6, a lead screw 8, a handle 9, a rigid support plate 10, a sponge pad 12, a trapezoidal mounting block 13, and a trapezoidal slider 14. The support base plate 6 is fixedly installed on one side of the lower end of the mounting base plate 4. The lead screw 8 is installed on the support base plate 6. The handle 9 is fixedly installed on the outer end of the lead screw 8. There are two rigid support plates 10; one rigid support plate 10 is fixedly installed on the other side of the lower end of the mounting base plate 4, and the other rigid support plate 10 is rotatably connected to the inner end of the lead screw 8. There are two sponge pads 12, each installed on the inner end of one of the two rigid support plates 10. There are two trapezoidal mounting blocks 13, each fixedly installed on the outer end of one of the two sponge pads 12. The trapezoidal mounting blocks 13 are also installed inside the rigid support plates 10. The trapezoidal slider 14... 4. The upper end of the rigid support plate 10 is fixedly installed on the lead screw 8. The trapezoidal slider 14 is simultaneously slidably installed in the mounting base plate 4. By setting the connecting and fixing structure 2 on the main body 1 of the portable vibration meter, which consists of the mounting base plate 4, the support base plate 6, the lead screw 8, the handle 9, the rigid support plate 10, the sponge pad 12, the trapezoidal mounting block 13, and the trapezoidal slider 14, the user can place one finger between the two sponge pads 12 on the two rigid support plates 10 during operation. By turning the handle 9, the lead screw 8 is rotated. The threaded engagement between the lead screw 8 and the threaded hole 7 on the support base plate 6 pushes the movable rigid support plate 10 along the trapezoidal guide groove 5 to move towards the fixed rigid support plate 10, thereby clamping and fixing fingers of different thicknesses. This effectively avoids the vibration meter from sliding and shifting in the user's hand due to hand sweat, equipment vibration transmission, or environmental interference during use, ensuring that the detection structure 3 and the unit detection surface always maintain a tight and stable contact, and greatly improving the accuracy of the detection data.

[0020] Specifically, a detection structure 3 is installed at one end of the portable vibration meter body 1. A mounting base plate 4 on the connecting and fixing structure 2 is fixedly installed at the lower end of the portable vibration meter body 1 by screws. A trapezoidal guide rail groove 5 is opened at the lower end of the mounting base plate 4. The support base plate 6 and the mounting base plate 4 are integrally formed. A threaded hole 7 is opened on the support base plate 6, which passes through the inside and outside of the support base plate 6. A lead screw 8 is installed in the threaded hole 7 on the support base plate 6. A rigid support plate 10 installed on the lead screw 8 is movably installed between the support base plate 6 and another rigid support plate 10. A trapezoidal mounting groove 11 is opened at the inner end of the rigid support plate 10. A trapezoidal mounting block 13 is installed in the trapezoidal mounting groove 11. A trapezoidal slider 14 is slidably installed in the trapezoidal guide rail groove 5 opened at the lower end of the mounting base plate 4. When using, the user holds the portable vibration meter body 1 with one hand, and at the same time, one finger of that hand needs to be placed... Between the two rigid support plates 10 in the connecting and fixing structure 2, the finger is pressed against the sponge pad 12 at the inner end of the fixed rigid support plate 10. Then, the handle 9 is turned to drive the lead screw 8 to rotate in the threaded hole 7 of the support base plate 6. The threaded engagement between the lead screw 8 and the threaded hole 7 pushes the rigid support plate 10, which is rotatably connected to the inner end of the lead screw 8, to move. At this time, the trapezoidal slider 14 at the upper end of the rigid support plate 10 slides along the trapezoidal guide groove 5 of the mounting base plate 4 until the two rigid support plates 10 clamp and fix the finger through the sponge pad 12. After the fixation is completed, the user holds the portable vibration meter body 1 and presses the detection structure 3 at one end of the portable vibration meter body 1 tightly against the detection part of the hydroelectric generator (such as the bearing seat, spindle housing, etc.). Then, vibration detection can be performed. After the detection is completed, the handle 9 is turned in the opposite direction to move the movable rigid support plate 10 away from the fixed rigid support plate 10. Finally, the finger can be removed.

[0021] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A novel vibration measuring device for hydropower units, comprising a portable vibration meter body (1), characterized in that: The lower end of the portable vibration meter body (1) is fixedly equipped with a connecting and fixing structure (2) for fixing the user's finger to the portable vibration meter body (1). The connecting and fixing structure (2) includes a mounting base plate (4), a support base plate (6), a lead screw (8), a handle (9), a rigid support plate (10), a sponge pad (12), a trapezoidal mounting block (13), and a trapezoidal slider (14). The support base plate (6) is fixedly installed on one side of the lower end of the mounting base plate (4). The lead screw (8) is installed on the support base plate (6). The handle (9) is fixedly installed on the outer end of the lead screw (8). There are two rigid support plates (10). One of the rigid support plates (10) is fixedly installed on the other side of the lower end of the mounting base plate (4), and the other rigid support plate (10) is rotatably connected to the inner end of the lead screw (8). There are two sponge pads (12) and they are respectively installed on the inner ends of the two rigid support plates (10). There are two trapezoidal mounting blocks (13) and they are respectively fixedly installed on the outer ends of the two sponge pads (12). The trapezoidal mounting blocks (13) are also installed inside the rigid support plates (10). The trapezoidal slider (14) is fixedly installed on the upper end of the rigid support plate (10) installed on the lead screw (8). The trapezoidal slider (14) is also slidably installed inside the mounting base plate (4).

2. The novel vibration measuring device for hydropower units according to claim 1, characterized in that: The portable vibration meter body (1) has a detection structure (3) installed at one end.

3. The novel vibration measuring device for hydropower units according to claim 2, characterized in that: The mounting base plate (4) on the connecting and fixing structure (2) is fixedly mounted on the lower end of the portable vibration meter body (1) by screws, and a trapezoidal guide rail groove (5) is provided at the lower end of the mounting base plate (4).

4. The novel vibration measuring device for hydropower units according to claim 3, characterized in that: The supporting substrate (6) and the mounting substrate (4) are integrally formed. The supporting substrate (6) has a threaded hole (7) that penetrates the supporting substrate (6) inside and out.

5. A novel vibration measuring device for hydropower units according to claim 4, characterized in that: The lead screw (8) is installed in the threaded hole (7) on the support base plate (6). The rigid support plate (10) installed on the lead screw (8) is movably installed between the support base plate (6) and another rigid support plate (10). The inner end of the rigid support plate (10) is provided with a trapezoidal mounting groove (11). The trapezoidal mounting block (13) is installed in the trapezoidal mounting groove (11).

6. A novel vibration measuring device for hydropower units according to claim 5, characterized in that: The trapezoidal slider (14) is slidably installed in the trapezoidal guide groove (5) opened at the lower end of the mounting base plate (4).

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