A transformer testing device for electrical power construction

Abstract

This utility model discloses a transformer testing device for power construction, relating to the field of power construction technology. The transformer testing device for power construction includes a base plate, with a testing device mounted on top of the base plate. A control panel is mounted on one side of the testing device. A limiting mechanism is mounted above the base plate: a conveying assembly, positioned above the base plate to convey the transformer into the testing device; and a clamping assembly, including a limiting shaft fixedly mounted above the base plate. A linkage frame and a transmission frame are inserted and mounted at the top of the limiting shaft. After the transformer is placed on the support plate, a rodless cylinder drives the support plate to slide along a guide shaft and a linear bearing. The transmission column moves with the support plate, contacts the transmission rod, and pushes it to slide along the guide rail. The transmission rod's sliding groove drives the transmission frame to rotate around the limiting shaft, and the linkage frame rotates synchronously. Both mechanisms cause the clamping plate to automatically converge towards the center to clamp the transformer, eliminating the need for manual adjustment.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy engineering technology, specifically a transformer testing device for power construction. Background Technology

[0002] The transformer test bench is suitable for factory testing and evaluation of the main electrical performance of power transformers, as well as safety testing and other major test items. It adopts a color display and provides full Chinese prompts for operation, realizing real-time monitoring of the entire test process, automatic measurement and control, and realizing a comprehensive measurement and control system that integrates primary circuit display, measurement, control tracking, analysis and processing, report storage, printing, and protection.

[0003] The existing Chinese utility model patent with publication number CN216013456U discloses a transformer testing device for power construction, including a testing cabinet and a base plate. A cylinder is fixedly installed on the top of the base plate, and a lifting rod is fixedly connected to the output end of the cylinder. A placement platform is fixedly connected to the top of the lifting rod. A testing instrument is fixedly installed on the top rear side wall of the testing cabinet. Slider blocks are fixedly installed on both sides of the placement platform. A through groove is opened in the placement platform, and a lead screw is rotatably connected in the through groove. A rotating disk and a lead screw nut are sequentially screwed onto the outer side wall of the lead screw. This utility model is reasonably designed. The transformer to be tested and debugged is placed on the placement platform. The rotating disk drives the lead screw to rotate, which in turn drives the lead screw nut to move in a relative direction. The lead screw nut drives the pressure plate to clamp the left and right sides of the transformer to stabilize the transformer's position.

[0004] The aforementioned transformer testing device restricts the transformer's position by clamping it with a lead screw. In this way, the transformer and the pressure plate are rigidly connected. During the monitoring process, the inrush current when the transformer is energized causes the iron core to saturate rapidly, and the magnetic field strength changes drastically, which intensifies the instantaneous impact of electromagnetic force, resulting in significant vibration of the transformer. At the same time, the transformer will also vibrate during normal operation. The stress generated by the vibration in the rigid connection method cannot be released quickly, which will cause the iron core fixing bolts inside the transformer to loosen under the influence of vibration, thus damaging the transformer. In addition, the device requires manual operation of the lead screw's turntable to drive the lead screw to rotate during the process of restricting the transformer's position, which affects the testing efficiency. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a transformer testing device for power construction, which solves the problems of inconvenient transportation and the overall strength of the unbuffered structure decreasing over time.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A transformer testing device for power construction includes a base plate, a testing device is mounted on top of the base plate, a control panel is mounted on one side of the testing device, and a limit mechanism is mounted on top of the base plate. A conveying assembly, located above the base plate, is used to convey the transformer into the testing equipment. The clamping assembly includes a limiting shaft fixedly installed above the base plate. A linkage frame and a transmission frame are inserted through the top of the limiting shaft. A clamping plate is movably installed on one side of the linkage frame and the transmission frame. A movable frame is movably installed on one side of the clamping plate. A limiting spring is inserted through the outer side of the movable frame. The clamping assembly also includes a guide rail fixedly installed above the base plate. A transmission rod is movably installed above the guide rail.

[0007] Preferably, the conveying assembly includes a rodless cylinder fixedly installed above the base plate, a connecting frame fixedly installed above the slider of the rodless cylinder, a support plate fixedly installed above the connecting frame, and the conveying assembly also includes a guide shaft fixedly installed above the base plate, a linear bearing inserted through the outer side of the guide shaft, a transmission column fixedly installed below the support plate, and a transmission spring inserted through the outer side of the transmission column.

[0008] Preferably, the support plate is fixedly connected to the slider of the rodless cylinder via a connecting frame, and a protruding structure for the linear bearing to be fitted and installed is provided below the support plate. The support plate is slidably connected to the guide shafts on both sides of the base plate via the linear bearing.

[0009] Preferably, the transmission columns are symmetrically installed on both sides of the bottom of the support plate, the transmission columns and the front end of the transmission rod are slidably connected, the front end of the transmission spring contacts the front end of the transmission rod, and the rear end of the transmission spring is fixedly connected to the rear end of the transmission column.

[0010] Preferably, there are four limiting shafts, the linkage frame and transmission frame are rotatably connected to the limiting shafts, the clamping plate is rotatably connected to the linkage frame and transmission frame, and the movable frame is slidably connected to the clamping plate.

[0011] Preferably, the limiting spring is located between the clamping plate and the movable frame, the transmission rod and the guide rail form a sliding connection, and one side of the transmission rod is provided with an outwardly inclined sliding groove that fits into the cylindrical protrusion structure at the bottom of the transmission frame, thus forming a sliding connection between the transmission rod and the transmission frame. Beneficial effects

[0012] This invention provides a transformer testing device for power construction. Compared with the prior art, it has the following advantages: (1) The transformer testing device for power construction, through the setting of the clamp plate, when the transformer vibrates during operation, the stress is first transmitted to the clamp plate. Since the clamp plate and the movable frame are slidably connected, the clamp plate can slide slightly along the movable frame, directly consuming part of the vibration energy. At the same time, the clamp plate drives the linkage frame and the transmission frame. The two are connected to the bottom plate through the limit shaft, and can rotate slightly with the vibration, converting the stress into a small rotation of the structure. The bottom of the transmission frame is slidably engaged with the transmission rod groove. When rotating, it drives the transmission rod to slide slightly along the guide rail, further dispersing the stress. The support plate is slidably connected to the guide shaft through the linear bearing, and can make a small displacement with the vibration. Combined with the rigid contact between the transmission column and the transmission rod, the remaining stress is transmitted to the bottom plate, and finally, multi-level dispersion and release are achieved to avoid stress concentration and damage to the equipment.

[0013] (2) The transformer testing device for power construction, through the setting of the transmission rod, after the transformer is placed on the support plate, the rodless cylinder drives the support plate to slide along the guide shaft and linear bearing. The transmission column moves with the support plate, and after contacting the transmission rod, it pushes it to slide along the guide rail. The transmission rod groove drives the transmission frame to rotate around the limit shaft, and the linkage frame rotates synchronously. The two drive the clamping plate to automatically close towards the center to clamp the transformer without manual adjustment. After the test is completed, the rodless cylinder pulls the support plate in the opposite direction, and the transmission column drives the transmission rod to slide in the opposite direction, so that the transmission frame and linkage frame are reset, and the clamping plate is automatically released. The entire clamping and releasing process is automatically completed with the conveying action, reducing manual intervention, shortening the single test cycle, and improving efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the rodless cylinder mounting structure of this utility model; Figure 3 This is a schematic diagram of the clamping plate installation structure of this utility model; Figure 4 This is a schematic diagram of the connection structure between the transmission rod and the transmission column of this utility model; In the diagram: 1. Base plate; 11. Testing equipment; 12. Control panel; 2. Limiting mechanism; 21. Conveying assembly; 211. Rodless cylinder; 212. Connecting frame; 213. Support plate; 214. Guide shaft; 215. Linear bearing; 216. Transmission column; 217. Transmission spring; 22. Clamping assembly; 221. Limiting shaft; 222. Linkage frame; 223. Transmission frame; 224. Clamping plate; 225. Movable frame; 226. Limiting spring; 227. Guide rail; 228. Transmission rod. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-4 This utility model provides a technical solution: a transformer testing device for power construction, including a base plate 1, a testing device 11 arranged above the base plate 1, a control panel 12 arranged on one side of the testing device 11, and a limit mechanism 2 arranged above the base plate 1. A conveying assembly 21, positioned above the base plate 1, is used to convey the transformer into the testing equipment 11. The conveying assembly 21 includes a rodless cylinder 211 fixedly mounted above the base plate 1. A connecting frame 212 is fixedly mounted above the slider of the rodless cylinder 211, and a support plate 213 is fixedly mounted above the connecting frame 212. The conveying assembly 21 also includes a guide shaft 214 fixedly mounted above the base plate 1. A linear bearing 215 is inserted through the outer side of the guide shaft 214. A transmission column 216 is fixedly mounted below the support plate 213, and a transmission spring 217 is inserted through the outer side of the transmission column 216. The support plate 213 is connected to the connecting frame 213. 12 is fixedly connected to the slider of the rodless cylinder 211. The support plate 213 has a protruding structure for the linear bearing 215 to be fitted and installed below it. The support plate 213 is slidably connected to the guide shafts 214 on both sides of the base plate 1 through the linear bearing 215. The transmission column 216 is symmetrically installed on both sides of the bottom of the support plate 213. The transmission column 216 is slidably connected to the front end of the transmission rod 228. The front end of the transmission spring 217 is in contact with the front end of the transmission rod 228. The rear end of the transmission spring 217 is fixedly connected to the rear end of the transmission column 216.

[0017] Specifically, the rodless cylinder 211 can drive the support plate 213 to move through the connecting frame 212. The support plate 213 can support the transformer. The weight of the transformer can be transmitted to the guide shaft 214 through the protruding structure at the bottom of the support plate 213. The rodless cylinder 211 and the guide shaft 214 jointly provide support for the support plate 213. The guide shaft 214 can limit the movement direction of the support plate 213 through the linear bearing 215. The linear bearing 215 can reduce the friction between the support plate 213 and the guide shaft 214 when sliding. The transmission column 216 can limit the position of the transmission spring 217. The transmission spring 217 forms a soft connection between the transmission column 216 and the transmission rod 228. When the support plate 213 moves forward, the transmission spring 217 can drive the transmission rod 228 to move forward.

[0018] The clamping assembly 22 includes a limiting shaft 221 fixedly installed above the base plate 1. A linkage frame 222 and a transmission frame 223 are inserted through the top of the limiting shaft 221. A clamping plate 224 is movably installed on one side of the linkage frame 222 and the transmission frame 223. A movable frame 225 is movably installed on one side of the clamping plate 224. A limiting spring 226 is inserted through the outer side of the movable frame 225. The clamping assembly 22 also includes a guide rail 227 fixedly installed above the base plate 1. A transmission rod 228 is movably installed above the guide rail 227. There are four limiting shafts 221 in total. The linkage frame 222, the transmission frame 223 and the limiting shaft 221 are rotatably connected. The clamping plate 224 is rotatably connected to the linkage frame 222 and the transmission frame 223. The movable frame 225 is slidably connected to the clamping plate 224. The limiting spring 226 is located between the clamping plate 224 and the movable frame 225. The transmission rod 228 and the guide rail 227 are slidably connected. One side of the transmission rod 228 is provided with an outwardly inclined sliding groove that fits into the cylindrical protrusion structure at the bottom of the transmission frame 223. The transmission rod 228 and the transmission frame 223 are slidably connected.

[0019] Specifically, the limiting shaft 221 can restrict the position of the linkage frame 222 and the transmission frame 223, and allow the linkage frame 222 and the transmission frame 223 to rotate. Since the position of the limiting shaft 221 is fixed, a parallelogram structure is formed between the linkage frame 222, the transmission frame 223 and the clamping plate 224. The limiting spring 226 between the movable frame 225 and the clamping plate 224 can allow the movable frame 225 to move while applying a certain clamping force to the transmission frame 223. The cylindrical protrusion structure at the bottom of the transmission frame 223 is located in the groove of the transmission rod 228. When the rodless cylinder 211 drives the support plate 213 to move forward, the guide shaft 214 at the bottom of the support plate 213 moves with the support plate 213. The rear end of the guide shaft 214 is connected to the front end of the transmission rod 228. The transmission spring 217 will be compressed as the support plate 213 moves. After the transmission spring 217 is compressed to a certain extent, it will drive the transmission rod 228 to move forward. The outward sliding groove of the transmission rod 228 will guide one end of the transmission frame 223 to rotate outward, so that the parallelogram structure formed between the linkage frame 222, the transmission frame 223 and the clamping plate 224 will reduce the angle of a set of angles, thereby causing the clamping plate 224 to move to the left and right sides of the base plate 1 and cancel the clamping state. During the process of the support plate 213 moving into the detection equipment 11, since the front end of the transmission rod 228 and the transmission column 216 form a sliding connection, the transmission rod 228 will not drive the transmission frame 223 to rotate when the front end of the transmission column 216 is not in contact with the transmission rod 228.

[0020] Specifically, the rodless cylinder 211 is model MY3B. All content not described in detail in this specification is prior art known to those skilled in the art.

[0021] During operation, the transformer is placed on the support plate 213. In the initial state of the equipment, the clamping plate 224 of the clamping assembly 22 is in an open, ready-to-clamp state. The transmission rod 228 is in its initial position on the guide rail 227, with no contact between the transmission column 216 and the front end of the transmission rod 228. The rodless cylinder 211 is activated, pulling the support plate 213 along the guide shaft 214 towards the testing equipment 11 via the connecting frame 212. The linear bearing 215 slides along the guide shaft 214, ensuring stable and linear movement of the support plate 213. To prevent conveying deviation, as the support plate 213 moves inward, the bottom transmission column 216 advances accordingly until it rigidly contacts the front end of the transmission rod 228. The support plate 213 continues to move inward, and the transmission column 216 pushes the transmission rod 228 to slide inward synchronously along the guide rail 227. As the transmission rod 228 slides inward, its outward-inclined groove drives the transmission frame 223 to rotate inward. Because the linkage frame 222, transmission frame 223, and limiting shaft 221 are hinged, a set of diagonals in the resulting parallelogram structure gradually decreases. The clamping plate 224 is forced to move towards the center of the base plate 1 until it clamps the transformer. The testing equipment 11 starts the test. The transformer generates vibration during operation. The vibration is transmitted to the clamping plate 224 through the support plate 213. The sliding fit between the clamping plate 224 and the movable frame 225 allows the clamping plate 224 to move slightly, releasing the vibration stress. The rotational redundancy of the linkage frame 222, the transmission frame 223 and the limit shaft 221 further buffers the vibration and avoids rigid impact damage to the internal structure of the transformer (such as the core and windings). After the test is completed, the rodless cylinder 211 moves in the opposite direction, pushing the support plate 213 to move away from the testing equipment 11 along the guide shaft 214. The transmission column 216 moves forward with the support plate 213, pulling the transmission rod 228 to slide outward synchronously along the guide rail 227. When the transmission rod 228 slides outward, the slide groove drives the bottom end of the transmission frame 223 to rotate outward. The diagonal of the parallelogram structure expands, and the clamping plate 224 opens to both sides of the base plate 1, releasing the clamping of the transformer, which is convenient for unloading or replacing the test piece.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A transformer testing device for power construction, comprising a base plate (1), characterized in that: A detection device (11) is provided above the base plate (1), a control panel (12) is provided on one side of the detection device (11), and a limit mechanism (2) is provided above the base plate (1). A conveying assembly (21) is disposed above the base plate (1) for conveying the transformer into the testing equipment (11); The clamping assembly (22) includes a limiting shaft (221) fixedly installed above the base plate (1). A linkage frame (222) and a transmission frame (223) are inserted through the top of the limiting shaft (221). A clamping plate (224) is movably installed on one side of the linkage frame (222) and the transmission frame (223). A movable frame (225) is movably installed on one side of the clamping plate (224). A limiting spring (226) is inserted through the outside of the movable frame (225). The clamping assembly (22) also includes a guide rail (227) fixedly installed above the base plate (1). A transmission rod (228) is movably installed above the guide rail (227).

2. The transformer testing device for power construction according to claim 1, characterized in that: The conveying assembly (21) includes a rodless cylinder (211) fixedly installed above the base plate (1). A connecting frame (212) is fixedly installed above the slider of the rodless cylinder (211). A support plate (213) is fixedly installed above the connecting frame (212). The conveying assembly (21) also includes a guide shaft (214) fixedly installed above the base plate (1). A linear bearing (215) is inserted through the outer side of the guide shaft (214). A transmission column (216) is fixedly installed below the support plate (213). A transmission spring (217) is inserted through the outer side of the transmission column (216).

3. A transformer testing device for power construction according to claim 2, characterized in that: The support plate (213) is fixedly connected to the slider of the rodless cylinder (211) through the connecting frame (212). The support plate (213) has a protruding structure for the linear bearing (215) to be fitted and installed below it. The support plate (213) is slidably connected to the guide shafts (214) on both sides of the base plate (1) through the linear bearing (215).

4. A transformer testing device for power construction according to claim 2, characterized in that: The transmission column (216) is symmetrically installed on both sides of the bottom of the support plate (213). The transmission column (216) and the front end of the transmission rod (228) are slidably connected. The front end of the transmission spring (217) is in contact with the front end of the transmission rod (228). The rear end of the transmission spring (217) is fixedly connected to the rear end of the transmission column (216).

5. A transformer testing device for power construction according to claim 1, characterized in that: There are four limiting shafts (221). The linkage frame (222), transmission frame (223) and limiting shafts (221) are rotatably connected. The clamping plate (224) is rotatably connected to the linkage frame (222) and transmission frame (223). The movable frame (225) and clamping plate (224) are slidably connected.

6. A transformer testing device for power construction according to claim 1, characterized in that: The limiting spring (226) is located between the clamping plate (224) and the movable frame (225). The transmission rod (228) and the guide rail (227) form a sliding connection. One side of the transmission rod (228) is provided with an outwardly inclined sliding groove that fits into the cylindrical protrusion structure at the bottom of the transmission frame (223). The transmission rod (228) and the transmission frame (223) form a sliding connection.

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