A transformer noise measurement tool capable of automatically adjusting the position of a sound level sensor

Abstract

The application discloses a transformer noise measurement tool capable of automatically adjusting the position of a sound level sensor, relates to the technical field of transformer noise detection equipment, and comprises a transformer noise measurement frame, wherein an adapter frame is arranged on the outer wall of the measurement frame, an inner wall sliding groove is formed in the inner wall of the adapter frame, a measurement tool main body is connected to the lower end of a rotary adjusting box through an extension rod, a driving motor, a driving shaft and a driving gear are arranged in the rotary adjusting box, the driving gear is engaged with the driving gear teeth on the outer wall of an adaptive adjusting rod, the automatic adjustment of the position of the measurement tool main body is realized, and a rotary clamping rod, a lower edge plate, a lead screw, a carrying plate and an extension clamping plate are arranged at the lower end of the measurement frame and the adapter frame and used for clamping and fixing the position of the adaptive adjusting rod. The application can adapt to the shape change of the outer wall of the transformer, and the position of the sound level sensor measuring point can be adjusted and fixed.

Description

Technical Field

[0001] This invention relates to the field of transformer noise detection equipment technology, specifically a transformer noise measurement fixture that can automatically adjust the position of the sound level sensor. Background Technology

[0002] Transformers generate continuous noise during operation due to factors such as core magnetostriction, winding vibration, and cooling device operation. Noise level is one of the important indicators for evaluating the operating status and product quality of transformers. Therefore, noise measurement of transformers is a routine and important part of power equipment testing. Currently, the industry generally uses sound level sensors (sound level meters) with fixed brackets to collect noise values ​​at different measuring points around the transformer. Usually, according to national or industry standards, multiple measuring points are arranged at certain intervals around the transformer body, and the noise data at each point is measured and then analyzed comprehensively. However, most existing transformer noise measurement fixtures have relatively simple structures, with fixed sensor installation positions or single adjustment methods. When changing measurement points, operators often need to manually disassemble and reinstall the sensor brackets, which is cumbersome and inefficient. At the same time, due to the differences in the shape and structure of the transformer, especially at the corners of the transformer's outer wall, traditional fixtures lack the technical means to integrate the adaptive sliding groove fitting mechanism with the automatic gear and rack transmission mechanism for coordinated operation. This results in poor fit between the measuring frame and the transformer's outer wall, which can easily cause measurement position deviation and affect the accuracy of noise data. In addition, some fixtures are not securely fixed after the sensor height and angle are adjusted, and are prone to loosening or displacement during long-term measurement, further reducing the reliability and repeatability of the measurement results. Therefore, how to design a measurement fixture that can automatically adapt to changes in the shape of the transformer's outer wall and achieve flexible adjustment and reliable fixation of the sound level sensor position has become an urgent technical problem to be solved in this field. To this end, we propose a transformer noise measurement fixture that can automatically adjust the position of the sound level sensor. Summary of the Invention

[0003] The purpose of this invention is to provide a transformer noise measurement fixture that can automatically adjust the position of the sound level sensor.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a transformer noise measurement fixture capable of automatically adjusting the position of a sound level sensor, comprising a transformer noise measurement frame, an adapter frame sleeved on the outer wall of the transformer noise measurement frame, the adapter frame surrounding the transformer noise measurement frame, both the outer wall of the transformer noise measurement frame and the adapter frame having an outer wall groove, and the inner wall of the adapter frame having an inner wall groove, an adapter adjustment rod connected between the inner wall groove and the outer wall groove of the transformer noise measurement frame, and a telescopic hole being provided on the side of the adapter adjustment rod near the inner wall groove, a telescopic rod being slidably connected to the inner wall of the telescopic hole, and a telescopic rolling ball being rotatably connected to the side of the telescopic rod away from the telescopic hole, and the outer wall of the telescopic rolling ball being slidably connected to the interior of the inner wall groove; The adapter adjustment rod is connected to a fixed rod on the side near the transformer noise measuring frame, and an auxiliary rolling ball is rotatably connected to the side of the fixed rod away from the adapter adjustment rod. The outer wall of the auxiliary rolling ball is slidably connected to the inner wall of the outer wall groove of the transformer noise measuring frame. The outer wall of the adapter adjustment rod is connected to a rotating adjustment box, and the lower end of the rotating adjustment box is connected to a telescopic rod for adjusting the height, and the lower end of the telescopic rod is connected to the main body of the transformer noise measurement fixture. The lower ends of the telescopic rod and the fixed rod are rotatably connected to rotating clamping rods, and the lower ends of the transformer noise measuring frame and the adapter frame are connected to lower edge clamping frames for fixing the position of the adapter adjustment rod.

[0005] As a further aspect of the present invention: the upper end of the transformer noise measuring frame is connected to a connecting frame, and the side of the connecting frame away from the transformer noise measuring frame is connected to the upper end of the adapter frame.

[0006] As a further embodiment of the present invention: the upper end of both the transformer noise measuring frame and the adapter frame is provided with an installation port, and the side wall of the installation port is provided with a locking groove. The locking groove is rotatably connected to a locking shaft, and the outer wall of the locking shaft is rotatably connected to a rotation limiting frame.

[0007] As a further aspect of the present invention: the outer wall of the transformer noise measuring frame is rotatably connected to a rotating rod, and the outer wall of the rotating rod is rotatably connected to a compression fixing frame; the outer wall of the transformer noise measuring frame is connected to an idle mounting block for mounting the compression fixing frame and a position limiting mounting block.

[0008] As a further aspect of the present invention: the upper end of the rotating adjustment box is provided with an automatic adjustment groove, and the inner wall of the automatic adjustment groove is connected to a drive motor, and the output end of the drive motor is connected to a drive shaft.

[0009] As a further embodiment of the present invention: the outer wall of the drive shaft is connected to a drive gear, and the outer wall of the adapter adjustment rod is provided with drive teeth, which mesh with the drive gear; the lower side of the outer wall of the telescopic rod is connected to a stabilizing frame for stabilizing the adapter adjustment rod and the angle position of the telescopic rod, and the lower end of the stabilizing frame contacts the bottom wall of the inner wall groove.

[0010] As a further embodiment of the present invention: the lower end of the rotating clamping rod is connected to a lower edge plate, and a lead screw is rotatably connected to the side of the lower edge plate away from the adapter adjusting rod.

[0011] As a further embodiment of the present invention: the outer wall of the lead screw is spirally connected to a carrying plate, and the upper end of the carrying plate is provided with a telescopic opening.

[0012] As a further aspect of the present invention: a telescopic clamping plate is slidably connected inside the telescopic opening, and the lower end of the telescopic clamping plate is connected to the bottom wall of the telescopic opening through a spring, and the left and right corners of the upper end of the telescopic clamping plate are all inclined corners.

[0013] Compared with the prior art, the beneficial effects of the present invention by adopting the above technical solution are as follows: 1. This invention achieves adaptive adjustment of the measuring frame structure to complex shapes such as corners of transformer outer walls and protrusions of heat sinks through the cooperative structure of the adapter frame, adapter adjustment rod, telescopic rod and telescopic rolling ball; 2. Based on the above-mentioned adaptive chute structure, this invention further integrates the automated displacement drive mechanism and the adaptive fitting chute mechanism onto the same fitting adjustment rod through the meshing transmission structure of the drive motor, drive shaft, drive gear, and drive teeth on the outer wall of the adapter adjustment rod. The lower end of the stabilizer is always in contact with the bottom wall of the inner chute to ensure the stability of the angle of the adapter adjustment rod during automatic movement. This overcomes the problems of angle offset and transmission jamming that are easy to occur when the two are integrated, and realizes the automatic movement of the rotating adjustment box on the adapter adjustment rod. This drives the main body of the transformer noise measurement fixture to automatically adjust its position, thereby improving the automation level and measurement efficiency of the sound level sensor measurement point adjustment. 3. The present invention achieves reliable clamping and fixing of the position of the adaptive adjustment rod through the cooperative structure of the rotating clamping rod, the lower edge plate, the lead screw, the carrying plate and the telescopic clamping plate, which avoids loosening or displacement during long-term measurement and improves the reliability and repeatability of the measurement results.

[0014] Other advantages, objectives and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be learned from the practice of the invention. Attached Figure Description

[0015] Figure 1This is an overall three-dimensional schematic diagram of an embodiment of the present invention; Figure 2 This is a three-dimensional schematic diagram of the main body of the transformer noise measurement fixture in an embodiment of the present invention; Figure 3 This is a three-dimensional schematic diagram of the adapter adjustment rod in an embodiment of the present invention; Figure 4 This is a three-dimensional schematic diagram of the carrying plate in an embodiment of the present invention; Figure 5 This is a three-dimensional schematic diagram of the rotating adjustment box in an embodiment of the present invention; Figure 6 This is a three-dimensional schematic diagram of the rotating limiting frame in an embodiment of the present invention; Figure 7 This is a three-dimensional schematic diagram of the extrusion fixing frame in an embodiment of the present invention.

[0016] In the diagram: 1. Transformer noise measuring frame; 11. Telescopic rod; 12. Main body of transformer noise measuring fixture; 2. Adapter frame; 21. Inner wall groove; 22. Outer wall groove; 23. Rotary adjustment box; 24. Adapter adjustment rod; 25. Telescopic hole; 26. Telescopic rod; 27. Telescopic rolling ball; 28. Rotary clamping rod; 29. ​​Lower edge clamping frame; 3. Connecting frame; 4. Mounting port; 41. Locking slot; 42. Rotation limiting frame; 44. Rotating rod; 45. Extrusion fixing frame; 46. Idle mounting block; 47. Position limiting mounting block; 5. Fixing rod; 51. Auxiliary rolling ball; 6. Automatic adjustment groove; 61. Drive motor; 62. Drive shaft; 63. Drive gear; 64. Drive teeth; 65. Stabilizing frame; 7. Lower edge plate; 71. Lead screw; 72. Carrying plate; 73. Telescopic port; 74. Telescopic clamping plate. Detailed Implementation

[0017] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. It should be noted that the description of these embodiments is for the purpose of helping to understand the present invention, but does not constitute a limitation of the present invention.

[0018] Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0019] Please see the appendix Figure 1 - Appendix Figure 7The present invention discloses a transformer noise measurement fixture that can automatically adjust the position of a sound level sensor, comprising a transformer noise measurement frame 1, an adapter frame 2 sleeved on the outer wall of the transformer noise measurement frame 1, and the adapter frame 2 surrounding the transformer noise measurement frame 1. Both the outer walls of the transformer noise measurement frame 1 and the adapter frame 2 are provided with outer wall grooves 22, and the inner wall of the adapter frame 2 is provided with an inner wall groove 21. An adapter adjustment rod 24 is connected between the inner wall groove 21 and the outer wall groove 22 of the transformer noise measurement frame 1. A telescopic hole 25 is provided on the side of the adapter adjustment rod 24 near the inner wall groove 21. A telescopic rod 26 is slidably connected to the inner wall of the telescopic hole 25. A telescopic rolling ball 27 is rotatably connected to the side of the telescopic rod 26 away from the telescopic hole 25. The outer wall of the telescopic rolling ball 27 is slidably connected to the interior of the inner wall groove 21. A fixed rod 5 is connected to the side of the adapter adjustment rod 24 that is close to the transformer noise measuring frame 1, and an auxiliary rolling ball 51 is rotatably connected to the side of the fixed rod 5 that is away from the adapter adjustment rod 24. The outer wall of the auxiliary rolling ball 51 is slidably connected to the inner wall of the outer wall groove 22 of the transformer noise measuring frame 1. The outer wall of the adapter adjustment rod 24 is connected to a rotating adjustment box 23, and the lower end of the rotating adjustment box 23 is connected to a telescopic rod 11 for adjusting the height, and the lower end of the telescopic rod 11 is connected to the transformer noise measuring fixture body 12. The lower ends of the telescopic rod 26 and the fixed rod 5 are rotatably connected to a rotating clamping rod 28, and the lower ends of the transformer noise measuring frame 1 and the adapter frame 2 are connected to a lower edge clamping frame 29 for fixing the position of the adapter adjusting rod 24. Furthermore, a connecting frame 3 is connected to the upper end of the transformer noise measuring frame 1, and the side of the connecting frame 3 away from the transformer noise measuring frame 1 is connected to the upper end of the adapter frame 2. Furthermore, both the transformer noise measuring frame 1 and the adapter frame 2 have an installation port 4 at their upper ends, and the side wall of the installation port 4 has a locking groove 41. The locking groove 41 is rotatably connected to a locking shaft, and the outer wall of the locking shaft is rotatably connected to a rotation limiting frame 42. Furthermore, a rotating rod 44 is rotatably connected to the outer wall of the transformer noise measuring frame 1, and a compression fixing frame 45 is rotatably connected to the outer wall of the rotating rod 44. An idle mounting block 46 and a position limiting mounting block 47 for mounting the compression fixing frame 45 are connected to the outer wall of the transformer noise measuring frame 1. Furthermore, an automatic adjustment slot 6 is provided at the upper end of the rotating adjustment box 23, and a drive motor 61 is connected to the inner wall of the automatic adjustment slot 6, and a drive shaft 62 is connected to the output end of the drive motor 61. Furthermore, a drive gear 63 is connected to the outer wall of the drive shaft 62, and a drive tooth 64 is provided on the outer wall of the adapter adjustment rod 24, and the drive tooth 64 meshes with the drive gear 63. A stabilizing frame 65 is connected to the lower side of the outer wall of the telescopic rod 26 to stabilize the angle position of the adapter adjustment rod 24 and the telescopic rod 26, and the lower end of the stabilizing frame 65 contacts the bottom wall of the inner wall groove 21. Furthermore, the lower end of the rotating clamping rod 28 is connected to a lower edge plate 7, and a lead screw 71 is rotatably connected to the side of the lower edge plate 7 away from the adapter adjusting rod 24; Furthermore, a carrying plate 72 is spirally connected to the outer wall of the lead screw 71, and a telescopic opening 73 is provided at the upper end of the carrying plate 72; Furthermore, a telescopic clamping plate 74 is slidably connected inside the telescopic opening 73, and the lower end of the telescopic clamping plate 74 is connected to the bottom wall of the telescopic opening 73 by a spring. The upper left and right corners of the telescopic clamping plate 74 are all inclined corners. The device includes a transformer noise measuring frame 1, an adapter frame 2 fitted around the outer wall of the transformer noise measuring frame 1, and an outer wall groove 22 on the outer wall of both the transformer noise measuring frame 1 and the adapter frame 2. An inner wall groove 21 is provided on the inner wall of the adapter frame 2. An adapter adjustment rod 24 is connected between the inner wall groove 21 and the outer wall groove 22 of the transformer noise measuring frame 1. A telescopic hole 25 is provided on the side of the adapter adjustment rod 24 near the inner wall groove 21. A telescopic rod 26 is slidably connected to the inner wall of the telescopic hole 25. A telescopic rolling ball 27 is rotatably connected to the side of the telescopic rod 26 away from the telescopic hole 25. The outer wall of the telescopic rolling ball 27 is slidably connected to the interior of the inner wall groove 21. A fixed rod 5 is connected to the side of the adapter adjustment rod 24 near the transformer noise measuring frame 1. An auxiliary rolling ball 51 is rotatably connected to the side of the fixed rod 5 away from the adapter adjustment rod 24. The outer wall of the auxiliary rolling ball 51 is slidably connected to the inner wall of the outer wall groove 22 of the transformer noise measuring frame 1. The outer wall of the adapter adjustment rod 24 is connected to a rotating adjustment box 23. The lower end of the rotating adjustment box 23 is connected to a telescopic rod 11 for adjusting the height. The lower end of the telescopic rod 11 is connected to a transformer noise measuring fixture body 12. A sound level sensor is installed on the transformer noise measuring fixture body 12 for collecting transformer noise data. When installing the adapter adjustment rod 24, rotate the compression fixing frame 45 to the positioning position on the upper end of the idle mounting block 46, thereby releasing the restriction on the position of the entire pair of blocks 43. At this time, drive the rotation limiting frame 42 and the entire pair of blocks 43 from the inside of the locking groove 41 to open the installation port 4. Then, place the telescopic rolling ball 27 and the auxiliary rolling ball 51 of the adapter adjustment rod 24 into the inner wall slide groove 21 and the outer wall slide groove 22 respectively. Then, insert the rotation limiting frame 42 and the entire pair of blocks 43 into the inside of the locking groove 41, close the installation port 4, and at the same time, rotate the compression fixing frame 45 to the position contacting the upper end of the position limiting mounting block 47 to fix the entire pair of blocks 43. When it is necessary to adjust the position of the adapter adjustment rod 24 and the transformer noise measurement fixture body 12, the telescopic rolling ball 27 and the auxiliary rolling ball 51 of the adapter adjustment rod 24 are driven to move inside the inner wall slide groove 21 and the outer wall slide groove 22, thereby realizing the adjustment of the position of the adapter adjustment rod 24 and the transformer noise measurement fixture body 12. When encountering a corner position on the transformer noise measurement frame 1, the telescopic rod 26 will extend and retract inside the adapter adjustment rod 24, thereby adjusting the overall length of the adapter adjustment rod 24, the telescopic rod 26 and the telescopic rolling ball 27, so as to adapt to the length change of the adapter adjustment rod 24 when moving at the corner, and realize the adaptive fit of the measurement frame to the shape of the transformer outer wall. After the position of the adapter adjustment rod 24 is adjusted, rotate the rotating clamping rod 28. The rotation of the rotating clamping rod 28 drives the lower edge plate 7 to rotate, thereby rotating the telescopic clamping plate 74 at the upper end of the carrying plate 72 to the position of contact with the lower edge clamping frame 29. Continue to rotate, and use the contact between the telescopic clamping plate 74 and the lower edge clamping frame 29 to push the telescopic clamping plate 74 to move into the telescopic opening 73 until the telescopic clamping plate 74 moves to the side of the lower edge clamping frame 29 away from the lower edge plate 7. At this time, the lower edge clamping frame 29 releases the pressure on the telescopic clamping plate 74, and the telescopic clamping plate 74 extends out from the inside of the telescopic opening 73. Then rotate the screw 71, and use the rotation of the screw 71 to drive the carrying plate 72 to move along the screw 71, thereby contacting the lower edge clamping frame 29 and forming a clamping fixation between the carrying plate 72 and the lower edge clamping frame 29, thereby fixing the position of the adapter adjustment rod 24. When the position of the transformer noise measurement fixture body 12 on the adapter adjustment rod 24 needs to be automatically adjusted, the drive motor 61 is started, and the drive motor 61 drives the drive shaft 62 to rotate. The rotation of the drive shaft 62 drives the drive gear 63 to rotate on the drive teeth 64, thereby realizing the movement of the rotating adjustment box 23 on the adapter adjustment rod 24. The lower end of the stabilizer 65 always keeps in contact with the bottom wall of the inner wall slide groove 21, stabilizing the angle position of the adapter adjustment rod 24 and the telescopic rod 26, thereby realizing the automatic adjustment of the position of the sound level sensor measuring point. Example 1: Manual adjustment implementation method in a small transformer noise measurement scenario: Structural configuration: The transformer noise measuring frame 1 adopts a square frame structure, and the adapter frame 2 is fitted on the outer wall of the transformer noise measuring frame 1. The two are connected by the inner wall sliding groove 21, the outer wall sliding groove 22 and the adapter adjustment rod 24. Since this type of transformer has few corners and a regular shape, the drive motor 61 is not activated in the automatic adjustment groove 6 at the upper end of the rotating adjustment box 23 in this embodiment. The position adjustment of the rotating adjustment box 23 on the adapter adjustment rod 24 is achieved by manual pushing. Specific implementation steps: Step 1: Before installation, rotate the compression fixing frame 45 to the positioning position of the idle stacking block 46, loosen the restriction on the whole pair of blocks 43, drive the rotating limiting frame 42 and the whole pair of blocks 43 to rotate out from the inside of the locking slot 41, and open the installation port 4. Step 2: Place the telescopic rolling ball 27 at one end of the adapter adjustment rod 24 into the inner wall slide groove 21 of the adapter frame 2, and place the auxiliary rolling ball 51 on the other end of the fixed rod 5 into the outer wall slide groove 22 of the transformer noise measuring frame 1, so that the adapter adjustment rod 24 can slide freely along the slide groove direction. Step 3: Close the installation port 4, rotate the rotating limiting frame 42 and the pair of blocks 43 to re-engage into the locking slot 41, and rotate the compression fixing frame 45 until it contacts the position limiting mounting block 47 to complete the fixing and limiting of the pair of blocks 43; Step 4: According to the measurement point position determined by the national standard GB / T1094 (or the corresponding transformer noise measurement standard), manually push the adapter adjustment rod 24 to slide along the inner wall slide groove 21 and the outer wall slide groove 22, thereby driving the rotating adjustment box 23 and the transformer noise measurement fixture body 12 to move above the predetermined measurement point. Since there are no obvious corners on the outer wall of the transformer in this embodiment, the telescopic rod 26 basically maintains its initial length and does not need to be telescopically adjusted. Step 5: Adjust the height of the transformer noise measurement fixture body 12 using the telescopic rod 11 so that the sound level sensor installed on it reaches the measurement height specified in the standard (generally 1 / 3 of the transformer height or determined according to site requirements). Step 6: After the position is determined, rotate the rotating clamping rod 28 to drive the lower edge plate 7 to rotate, so that the telescopic clamping plate 74 on the carrying plate 72 contacts and engages with the lower edge clamping frame 29. Then rotate the lead screw 71 to drive the carrying plate 72 to move along the lead screw 71, so that the carrying plate 72 and the lower edge clamping frame 29 are clamped and fixed, and the current position of the adapter adjustment rod 24 is locked to prevent displacement during the measurement process. Step 7: After completing the data acquisition at one measurement point, repeat steps 4 to 6 to adjust the sound level sensor to other preset measurement points around the transformer in turn, and complete the noise data acquisition at all measurement points. This embodiment has a simple structure and is easy to operate. It is suitable for noise measurement of small transformers with a small number of measuring points and regular outer wall shape. Moreover, it can complete the sensor position adjustment without relying on electric drive, and has good field applicability and economy. Example 2: Automatic Adjustment Implementation Method in Noise Measurement Scenarios of Large Irregularly Shaped Transformers: Structural configuration: In this embodiment, a drive motor 61 is installed in the automatic adjustment slot 6 at the upper end of the rotating adjustment box 23. The output end of the drive motor 61 is connected to the drive shaft 62. The outer wall of the drive shaft 62 is connected to the drive gear 63, which meshes with the drive teeth 64 on the outer wall of the adapter adjustment rod 24 to form a gear and rack transmission structure, thereby realizing the automatic displacement of the rotating adjustment box 23 on the adapter adjustment rod 24. At the same time, the stabilizing frame 65 on the lower side of the outer wall of the telescopic rod 26 always keeps in contact with the bottom wall of the inner wall slide groove 21, ensuring the angular stability of the adapter adjustment rod 24 during automatic movement. Specific implementation steps: Step 1: Referring to steps 1 to 3 in Embodiment 1, complete the installation of the adapter adjustment rod 24 between the transformer noise measuring frame 1 and the adapter frame 2, and close and fix the installation port 4. Step 2: In complex shapes such as corners or fin protrusions on the outer wall of the transformer, the distance between the inner wall groove 21 and the outer wall groove 22 changes. The telescopic rod 26 automatically expands and contracts in the telescopic hole 25 inside the adapter adjustment rod 24, causing the telescopic rolling ball 27 to always maintain a close sliding connection with the inner wall groove 21. This allows the overall length of the adapter adjustment rod 24, the telescopic rod 26, and the telescopic rolling ball 27 to adaptively adjust with the change of the outer wall contour, ensuring that the adapter adjustment rod 24 moves smoothly along the outer wall contour of the transformer without getting stuck or disengaging from the groove. Step 3: Based on the pre-set multiple measurement point positions (the running time or revolutions of the drive motor 61 corresponding to each measurement point can be pre-programmed by the controller), start the drive motor 61. The drive shaft 62 drives the drive gear 63 to rotate along the drive teeth 64 on the outer wall of the adapter adjustment rod 24. The meshing transmission between the drive gear 63 and the drive teeth 64 causes the rotating adjustment box 23 to automatically move the transformer noise measurement fixture body 12 along the adapter adjustment rod 24 to the first measurement point position, and the drive motor 61 stops running. Step 4: After the sound level sensor completes the noise data acquisition at the measurement point, start the drive motor 61 again to drive the rotating adjustment box 23 to move to the next measurement point position. Repeat this process until the automatic inspection of all preset measurement points within the surrounding area of ​​the transformer noise measurement frame 1 and the adapter frame 2 is completed. Step 5: During the automatic adjustment process, if it is necessary to change the height of the sound level sensor at the same time, it can be adjusted synchronously with the telescopic rod 11 to ensure that the sensor is always at the standard measurement height. Step 6: After all measuring points are measured, rotate the rotating clamping rod 28 and the lead screw 71 as described in step 6 of embodiment 1. Use the clamping cooperation between the carrying plate 72 and the lower edge clamping frame 29 to fix the adapter adjustment rod 24 in the final position to prevent the adapter adjustment rod 24 from sliding accidentally during equipment transportation or storage. This embodiment achieves automated and continuous adjustment of the sound level sensor measurement point position through the transmission cooperation of the drive motor 61, drive shaft 62, drive gear 63 and drive teeth 64. It eliminates the need for repeated manual movement of the main body of the measuring fixture, significantly improving the efficiency and automation level of noise measurement of large transformers with multiple measurement points and complex outer wall shapes. At the same time, thanks to the adaptive structural design of the telescopic rod 26 and the stabilizer 65, the fixture is well adapted to the complex contour of the transformer outer wall and has good operational stability during automatic movement.

[0020] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on.

[0021] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0022] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments.

[0023] For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and these variations still fall within the protection scope of the present invention.

Claims

1. A transformer noise measurement fixture capable of automatically adjusting the position of a sound level sensor, comprising a transformer noise measurement frame (1), characterized in that: The transformer noise measuring frame (1) is fitted with an adapter frame (2) on its outer wall, and the adapter frame (2) is arranged around the transformer noise measuring frame (1). The outer walls of both the transformer noise measuring frame (1) and the adapter frame (2) are provided with outer wall grooves (22), and the inner wall of the adapter frame (2) is provided with an inner wall groove (21). An adapter adjustment rod (24) is connected between the inner wall groove (21) and the outer wall groove (22) of the transformer noise measuring frame (1). An extension hole (25) is provided on the side of the adapter adjustment rod (24) near the inner wall groove (21). An extension rod (26) is slidably connected to the inner wall of the extension hole (25). An extension rolling ball (27) is rotatably connected to the side of the extension rod (26) away from the extension hole (25). The outer wall of the extension rolling ball (27) is slidably connected to the inside of the inner wall groove (21). The adapter adjustment rod (24) is connected to a fixed rod (5) on the side close to the transformer noise measuring frame (1), and the fixed rod (5) is rotatably connected to an auxiliary rolling ball (51) on the side away from the adapter adjustment rod (24), and the outer wall of the auxiliary rolling ball (51) is slidably connected to the inner wall of the outer wall groove (22) of the transformer noise measuring frame (1). The outer wall of the adapter adjustment rod (24) is connected to a rotating adjustment box (23), and the lower end of the rotating adjustment box (23) is connected to a telescopic rod (11) for adjusting the height, and the lower end of the telescopic rod (11) is connected to the main body (12) of the transformer noise measurement fixture. The lower ends of the telescopic rod (26) and the fixed rod (5) are rotatably connected to a rotating clamping rod (28), and the lower ends of the transformer noise measuring frame (1) and the adapter frame (2) are connected to a lower edge clamping frame (29) for fixing the position of the adapter adjusting rod (24).

2. The transformer noise measurement fixture capable of automatically adjusting the position of the sound level sensor according to claim 1, characterized in that: The upper end of the transformer noise measuring frame (1) is connected to a connecting frame (3), and the side of the connecting frame (3) away from the transformer noise measuring frame (1) is connected to the upper end of the adapter frame (2).

3. The transformer noise measurement fixture that can automatically adjust the position of the sound level sensor according to claim 1, characterized in that: The transformer noise measuring frame (1) and the adapter frame (2) are both provided with an installation port (4) at their upper ends, and a slot (41) is provided on the side wall of the installation port (4). The slot (41) is rotatably connected to a slot shaft, and a rotation limiting frame (42) is rotatably connected to the outer wall of the slot shaft.

4. The transformer noise measurement fixture that can automatically adjust the position of the sound level sensor according to claim 3, characterized in that: The outer wall of the transformer noise measuring frame (1) is rotatably connected to a rotating rod (44), and the outer wall of the rotating rod (44) is rotatably connected to a compression fixing frame (45). The outer wall of the transformer noise measuring frame (1) is connected to an idle mounting block (46) for mounting the compression fixing frame (45) and a position limiting mounting block (47).

5. A transformer noise measurement fixture capable of automatically adjusting the position of a sound level sensor according to claim 1, characterized in that: The upper end of the rotating adjustment box (23) is provided with an automatic adjustment groove (6), and the inner wall of the automatic adjustment groove (6) is connected to a drive motor (61), and the output end of the drive motor (61) is connected to a drive shaft (62).

6. A transformer noise measurement fixture capable of automatically adjusting the position of a sound level sensor according to claim 5, characterized in that: The outer wall of the drive shaft (62) is connected to a drive gear (63), and the outer wall of the adapter adjustment rod (24) is provided with drive teeth (64), and the drive teeth (64) mesh with the drive gear (63). The lower side of the outer wall of the telescopic rod (26) is connected to a stabilizing frame (65) for stabilizing the angle position of the adapter adjustment rod (24) and the telescopic rod (26), and the lower end of the stabilizing frame (65) contacts the bottom wall of the inner wall groove (21).

7. A transformer noise measurement fixture capable of automatically adjusting the position of a sound level sensor according to claim 1, characterized in that: The lower end of the rotating clamping rod (28) is connected to a lower edge plate (7), and a lead screw (71) is rotatably connected to the side of the lower edge plate (7) away from the adapter adjusting rod (24).

8. A transformer noise measuring fixture capable of automatically adjusting the position of a sound level sensor according to claim 7, characterized in that: The outer wall of the lead screw (71) is spirally connected to a carrying plate (72), and the upper end of the carrying plate (72) is provided with a telescopic opening (73).

9. A transformer noise measuring fixture capable of automatically adjusting the position of a sound level sensor according to claim 8, characterized in that: The telescopic opening (73) is slidably connected to a telescopic clamping plate (74), and the lower end of the telescopic clamping plate (74) is connected to the bottom wall of the telescopic opening (73) by a spring. The upper left and right corners of the telescopic clamping plate (74) are all inclined corners.

Images