Transformer magnetic core strength tester
By combining the design of pressurized and tensile components in the transformer core strength tester, the problem of single function of the existing tester is solved, and a comprehensive evaluation and performance measurement of the core under different mechanical stress conditions is achieved.
Patent Information
- Application Number
- CN202421704029.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-18
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-07-18
AI Technical Summary
The existing transformer core strength tester has a single test function. Usually, the core can only be pressurized or stressed, and it is impossible to fully evaluate the performance of the core under different pressure and mechanical stress conditions.
A transformer core strength tester is designed, combining pressurized components and tensile components to apply pressure through the cylinder to drive the pressurized plate, and the threaded rod and mobile rod are driven through the tooth plate, transmission gear and pulley system to achieve tensile testing of the magnetic core.
A comprehensive evaluation of the core under pressure and tensile loading is achieved to ensure that the core can withstand mechanical stresses that may occur during normal operation in actual use and measure its maximum load-bearing capacity.
Smart Images
Figure CN223037622U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of transformer manufacturing, and particularly relates to a transformer core strength tester. Background Technique
[0002] A transformer core strength tester is a special equipment used to evaluate the physical strength, stability and durability of a transformer core under various mechanical stress conditions. It usually simulates the pressure and stress that a transformer may withstand during operation by applying controlled pressure or tensile force. The tester can precisely control the applied force and the changing speed to ensure the accuracy and repeatability of the test conditions. In addition, the equipment can also conduct tests under different environmental conditions, such as high temperature, low temperature or high humidity, to evaluate the performance of the core under these conditions. Through these tests, the mechanical response of the core under actual working conditions can be comprehensively understood, and important engineering data and guidance can be provided for optimizing the transformer design.
[0003] In the existing transformer core strength tester, when detecting the core, a single tester can only perform a pressure test or a stress test on the core, and the test function is single, which limits the comprehensive evaluation of the core under different pressure and mechanical stress conditions.
[0004] Therefore, we provide a transformer core strength tester to solve the above problems. Content of the Utility Model
[0005] The purpose of the utility model is to provide a transformer core strength tester, which solves the problem that the existing transformer core strength tester has a single test function and usually can only perform a pressure test or a stress test on the core through the cooperation of a pressurizing component and a stretching component.
[0006] To solve the above technical problems, the utility model is realized through the following technical solutions:
[0007] The utility model is a transformer core strength tester, including a bottom plate, a bracket fixedly connected to the top of the bottom plate, and a test bench fixedly connected to the top of the bottom plate;
[0008] A pressurizing component is arranged at the top of the bracket. The pressurizing component includes a cylinder fixedly connected to the top of the bracket, a pressurizing plate fixedly connected to the bottom of the cylinder, and a transmission part arranged at the back of the bottom of the cylinder;
[0009] A stretching component is arranged at the top of the test bench. The stretching component includes fixing blocks arranged on both sides of the top of the test bench, a first threaded rod threadedly connected to the top of the fixing blocks, a clamping plate movably connected to the bottom of the first threaded rod through a bearing, a stretching part arranged on one side of the fixing block, and a reset part arranged on both sides of the bottom of the test bench.
[0010] The present utility model is further configured such that the transmission member includes a toothed plate, the toothed plate is fixedly connected to the back surface of the bottom of the air cylinder, a rotating rod is rotatably connected to the rear side of the inner cavity of the bracket, a transmission gear is fixedly connected to the surface of the rotating rod, the back surface of the transmission gear meshes with the front surface of the toothed plate, and a first pulley is fixedly connected to one side of the surface of the rotating rod.
[0011] The present utility model is further configured such that the stretching member includes a second threaded rod, the second threaded rod is rotatably connected to the bottom of the inner cavity of the bracket, a second pulley is fixedly connected to one side of the surface of the second threaded rod, a threaded sleeve is threadedly connected to the surface of the second threaded rod, a connecting plate is fixedly connected to the surface of the threaded sleeve, a moving rod is fixedly connected to the top of the connecting plate, a cross plate is fixedly connected to the bottom of one side of the fixed block, and the moving rod is slidably connected to the inside of the cross plate.
[0012] The present utility model is further configured such that the resetting member includes a limiting rod, the limiting rod is fixedly connected to the front side and the rear side of the top of the test bench through a vertical plate, sliders are respectively slidably connected to both ends of the limiting rod, the sliders are fixedly connected to the fixed block, springs are respectively sleeved on both ends of the limiting rod, one end of each spring abuts against the vertical plate, and the other end abuts against the slider.
[0013] The present utility model is further configured such that a sliding groove is formed inside the cross plate, and the moving rod is slidably connected to the inside of the sliding groove.
[0014] The present utility model is further configured such that a guiding rod is fixedly connected to the bottom of the inner cavity of the bracket, and the connecting plate is slidably connected to the surface of the guiding rod.
[0015] The present utility model is further configured such that movable grooves are formed on both sides of the top of the test bench, and the moving rod is slidably connected to the inside of the movable grooves.
[0016] The present utility model is further configured such that a hand crank is fixedly connected to the top of the first threaded rod, and a limiting pin is arranged at the rear side of the top of the hand crank, and one end of the limiting pin penetrates into the fixed block.
[0017] The present utility model has the following beneficial effects:
[0018] 1. Through the operation of the air cylinder of the present utility model, the pressing plate can be driven to move, and the pressing plate presses the magnetic core to test the mechanical strength of the magnetic core. At the same time, the air cylinder also drives the toothed plate to move, thereby driving the transmission gear to rotate, so that the rotating rod drives the first pulley to rotate. The first pulley can drive the threaded rod to rotate through the second pulley, the threaded rod drives the threaded sleeve to move, and then drives the moving rod to move, so that the fixed block moves, thereby testing the maximum stress value that the magnetic core can withstand.
[0019] 2. Through the provision of the pressurizing assembly, the present utility model can evaluate the stability and deformation characteristics of the magnetic core under pressure loading, ensuring that the magnetic core can withstand the mechanical stress that may occur during normal operation in actual use. Through the provision of the stretching assembly, the maximum load-bearing capacity of the magnetic core under tensile loading, i.e., its tensile strength, can be measured, ensuring the ultimate load-bearing capacity of the magnetic core under tensile stress.
[0020] Of course, it is not necessary for any product implementing the present utility model to simultaneously achieve all the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments will be briefly introduced below.
[0022] Figure 1 FIG. 1 is a three-dimensional structure diagram of a transformer core strength tester;
[0023] Figure 2 FIG. 2 is a schematic structural diagram of a transmission member in a transformer core strength tester;
[0024] Figure 3 FIG. 3 is a schematic structural diagram of a reset member in a transformer core strength tester;
[0025] Figure 4 FIG. 4 is a schematic structural diagram of a stretching member in a transformer core strength tester.
[0026] In the drawings: 1, bottom plate; 2, bracket; 3, test bench; 4, cylinder; 5, pressure plate; 6, fixed block; 7, first threaded rod; 8, clamping plate; 9, toothed plate; 10, rotating rod; 11, transmission gear; 12, first pulley; 13, second threaded rod; 14, second pulley; 15, threaded sleeve; 16, connecting plate; 17, moving rod; 18, cross plate; 19, limiting rod; 20, slider; 21, spring. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0027] The technical solutions in the embodiments of the present utility model will be described below with reference to the drawings in the embodiments of the present utility model. The described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Specific Embodiment 1
[0029] Please refer to Figures 1-4, the utility model relates to a transformer core strength tester, which comprises a bottom plate 1, a bracket 2 fixedly connected to the top of the bottom plate 1, and a test bench 3 fixedly connected to the top of the bottom plate 1; a pressurizing component is arranged at the top of the bracket 2, the pressurizing component comprises a cylinder 4, the cylinder 4 is fixedly connected to the top of the bracket 2, a pressure plate 5 is fixedly connected to the bottom of the cylinder 4, and a transmission part is arranged on the back of the bottom of the cylinder 4; a stretching component is arranged at the top of the test bench 3, the stretching component comprises fixing blocks 6, the fixing blocks 6 are arranged on both sides of the top of the test bench 3, a first threaded rod 7 is threadedly connected to the top of the fixing blocks 6, the bottom of the first threaded rod 7 is movably connected with a clamping plate 8 through a bearing, a stretching part is arranged on one side of the fixing blocks 6, and resetting parts are arranged on both sides of the bottom of the test bench 3.
[0030] Specifically: the brackets 2 are fixed on both sides of the top of the bottom plate 1, the test bench 3 is fixed at the center of the top of the bottom plate 1, the cylinder 4 is fixed at the center of the top of the bracket 2, the number of the fixing blocks 6 is two, and they are both slidably connected to the left and right sides of the top of the test bench 3. Through the arrangement of the stretching part, the core can be subjected to stretching test, which increases the practicability during use. Specific Embodiment Two
[0032] Please refer to Figures 1-4 , on the basis of Specific Embodiment One, the transmission part comprises a toothed plate 9, the toothed plate 9 is fixedly connected to the back of the bottom of the cylinder 4, a rotating rod 10 is rotatably connected to the rear side of the inner cavity of the bracket 2, a transmission gear 11 is fixedly connected to the surface of the rotating rod 10, the back of the transmission gear 11 is meshed with the front of the toothed plate 9, a first belt pulley 12 is fixedly connected to one side of the surface of the rotating rod 10, the stretching part comprises a second threaded rod 13, the second threaded rod 13 is rotatably connected to the bottom of the inner cavity of the bracket 2, a second belt pulley 14 is fixedly connected to one side of the surface of the second threaded rod 13, a threaded sleeve 15 is threadedly connected to the surface of the second threaded rod 13, a connecting plate 16 is fixedly connected to the surface of the threaded sleeve 15, a moving rod 17 is fixedly connected to the top of the connecting plate 16, a cross plate 18 is fixedly connected to the bottom of one side of the fixing block 6, the moving rod 17 is slidably connected to the inside of the cross plate 18, the resetting part comprises a limiting rod 19, the limiting rod 19 is fixedly connected to the front and rear sides of the top of the test bench 3 through a vertical plate, both ends of the limiting rod 19 are slidably connected with sliders 20, the sliders 20 are fixedly connected with the fixing blocks 6, both ends of the limiting rod 19 are respectively sleeved with springs 21, one end of the spring 21 abuts against the vertical plate, and the other end abuts against the slider 20.
[0033] A sliding groove is formed inside the cross plate 18, the moving rod 17 is slidably connected to the inside of the sliding groove, a guiding rod is fixedly connected to the bottom of the inner cavity of the bracket 2, the connecting plate 16 is slidably connected to the surface of the guiding rod, moving grooves are formed on both sides of the top of the test bench 3, the moving rod 17 is slidably connected to the inside of the moving grooves, a hand crank is fixedly connected to the top of the first threaded rod 7, and a limiting pin is arranged at the rear side of the top of the hand crank, and one end of the limiting pin penetrates into the fixing block 6.
[0034] Specifically: The toothed plate 9 is fixed to the rear side of the bottom of the air cylinder 4. The rotating rod 10 is rotatably connected to the rear side of the top of the inner cavity of the bracket 2 through a bearing. The transmission gear 11 is fixed at the center of the surface of the rotating rod 10. The rear side of the transmission gear 11 meshes with the front side of the toothed plate 9. The second threaded rod 13 is rotatably connected to the bottom of the inner cavity of the bracket 2 through a bearing. The first pulley 12 is fixed to the left side of the surface of the rotating rod 10. The second pulley 14 is fixed to the left side of the surface of the second threaded rod 13. There are two threaded sleeves 15, which are symmetrically threadedly connected to the left and right sides of the surface of the second threaded rod 13. There are two moving rods 17, which are symmetrically fixed to the top of the connecting plate 16. There are two limiting rods 19, which are both fixed to the front and rear sides of the top of the test bench 3 through vertical plates. There are four sliders 20, which are symmetrically slidably connected to both sides of the surface of the limiting rod 19. There are four springs 21, which are symmetrically sleeved on both sides of the surface of the limiting rod 19, and the two ends of the spring 21 are respectively fixed to the vertical plate and the slider 20. The sliding groove can facilitate the movement of the moving rod 17. The guiding rod can limit the connecting plate 16 to prevent rotation during movement. There are two moving grooves, which are symmetrically opened on both sides of the top of the test bench 3. The limiting pin can limit the handwheel to increase the practicality during use.
[0035] The working principle of the present utility model is as follows: When it is necessary to perform a strength test on the magnetic core, the user starts the air cylinder 4 through an external controller. The air cylinder 4 drives the pressure plate 5 to press down. The pressure plate 5 applies pressure to the magnetic core to perform a pressure test on it. When the air cylinder 4 moves upward, the air cylinder 4 will drive the toothed plate 9 to move. The toothed plate 9 drives the transmission gear 11 to rotate. The transmission gear 11 drives the rotating rod 10 to rotate. The rotating rod 10 drives the first pulley 12 to rotate. The first pulley 12 drives the second pulley 14 to rotate through a belt. The second pulley 14 drives the second threaded rod 13 to rotate. The second threaded rod 13 drives the two threaded sleeves 15 to move to both sides. The threaded sleeve 15 drives the connecting plate 16 to move. The connecting plate 16 drives the moving rod 17 to move. When the air cylinder 4 moves to the preset position, the moving rod 17 will move to the end of the sliding groove far from the fixed block 6. At this time, when the air cylinder 4 moves upward again, it can drive the fixed block 6 to move through the cross plate 18. When the air cylinder 4 presses down, the moving rod 17 will move to the end close to the fixed block 6 to ensure that there is enough distance for the pressure test, so as to achieve the purpose of performing a tensile test on the magnetic core.
[0036] The standard parts used in the present utility model can all be purchased from the market, and can also be customized according to the descriptions in the specification and the attached drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. The control method is automatically controlled through a control unit. The control circuit of the control unit can be realized by simple programming by those skilled in the art, which belongs to the common general knowledge in this field. Therefore, the control method and circuit connection are not explained in detail in the present utility model.
[0037] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the relevant technical field can well understand and utilize the present utility model.
Claims
1. A transformer core strength tester, comprising a base plate (1), characterized in that: The top of the base plate (1) is fixedly connected to a bracket (2), and the top of the base plate (1) is fixedly connected to a test bench (3); A pressurizing assembly is arranged at the top of the support (2), and the pressurizing assembly comprises a cylinder (4), the cylinder (4) is fixedly connected to the top of the support (2), a pressurizing plate (5) is fixedly connected to the bottom of the cylinder (4), and a transmission member is arranged on the back of the bottom of the cylinder (4); A stretching assembly is arranged on the top of the test bench (3), and the stretching assembly comprises a fixed block (6). The fixed block (6) is arranged on both sides of the top of the test bench (3). A first threaded rod (7) is threadedly connected to the top of the fixed block (6), and a clamping plate (8) is movably connected to the bottom of the first threaded rod (7) via a bearing. A stretching piece is arranged on one side of the fixed block (6), and reset pieces are arranged on both sides of the bottom of the test bench (3).
2. A transformer core strength tester according to claim 1, characterized in that: The transmission member comprises a toothed plate (9), the toothed plate (9) being fixedly connected to the back side of the bottom of the cylinder (4), a rotating rod (10) being rotatably connected to the rear side of the inner cavity of the bracket (2), a transmission gear (11) being fixedly connected to the surface of the rotating rod (10), the back side of the transmission gear (11) being meshed with the front side of the toothed plate (9), and a first pulley (12) being fixedly connected to one side of the surface of the rotating rod (10).
3. A transformer core strength tester according to claim 1, characterized in that: The stretching member comprises a second threaded rod (13), the second threaded rod (13) is rotatably connected to the bottom of the inner cavity of the bracket (2), a second pulley (14) is fixedly connected to one side of the surface of the second threaded rod (13), a threaded sleeve (15) is threadedly connected to the surface of the second threaded rod (13), a connecting plate (16) is fixedly connected to the surface of the threaded sleeve (15), a moving rod (17) is fixedly connected to the top of the connecting plate (16), a transverse plate (18) is fixedly connected to the bottom of one side of the fixed block (6), and the moving rod (17) is slidably connected to the inside of the transverse plate (18).
4. A transformer core strength tester according to claim 1, characterized in that: The reset member comprises a limit rod (19), wherein the limit rod (19) is fixedly connected to the front side and the rear side of the top of the test bench (3) through a vertical plate, and the two ends of the limit rod (19) are respectively slidably connected to a slider (20), and the slider (20) is fixedly connected to the fixed block (6), and the two ends of the limit rod (19) are respectively sleeved with a spring (21), one end of the spring (21) is in contact with the vertical plate, and the other end is in contact with the slider (20).
5. A transformer core strength tester according to claim 3, characterized in that: A sliding groove is provided inside the transverse plate (18), and the moving rod (17) is slidably connected inside the sliding groove.
6. A transformer core strength tester according to claim 3, characterized in that: A guide rod is fixedly connected to the bottom of the inner cavity of the bracket (2), and the connecting plate (16) is slidably connected to the surface of the guide rod.
7. A transformer core strength tester according to claim 3, characterized in that: Both sides of the top of the test bench (3) are provided with movable grooves, and the moving rod (17) is slidably connected inside the movable grooves.
8. A transformer core strength tester according to claim 1, characterized in that: The top of the first threaded rod (7) is fixedly connected to a hand wheel, and a limit pin is arranged at the rear side of the top of the hand wheel, and one end of the limit pin penetrates into the interior of the fixed block (6).