A power distribution network electrical equipment withstand voltage test device

Abstract

This utility model relates to the field of electrical equipment testing technology, and more particularly to a withstand voltage testing device for electrical equipment in power distribution networks. The utility model includes a frame, support columns, and a test bench. Multiple support columns are evenly distributed and fixed to the bottom of the inner side of the frame, and a test bench is fixed to the top of the support columns. A pressure-applying mechanism is assembled on the top of the inner side of the frame, used to apply pressure to the electrical equipment on the test bench. Through the structural design of the pressure-applying mechanism and the foolproof mechanism, this utility model allows the device to prevent accidental operation by swinging an interference rod during the pressure application process, thus avoiding accidental injury to the operator during the downward pressure of the rod and improving the safety of the device. Furthermore, the structural design of the auxiliary mechanism allows for rapid positioning and fixation of the electrical equipment, making the pressure application process more stable.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment testing technology, and in particular to a withstand voltage test device for electrical equipment in power distribution networks. Background Technology

[0002] As a key component of the power grid, the distribution network plays an important role in the distribution of electrical energy. Traditional electrical equipment is defined as a comprehensive embodiment of disciplines related to the creation and generation of electrical and electronic systems. When electrical equipment leaves the factory, it usually needs to undergo a withstand voltage test, which tests the pressure-bearing capacity of the electrical equipment casing.

[0003] For example, a withstand voltage testing device for electrical equipment in a power distribution network, with publication number CN220289756U, includes a base plate, a frame fixedly connected to the top of the base plate, a hydraulic rod fixedly connected to the top of the frame, and a pressure block fixedly connected to the bottom of the hydraulic rod. In this withstand voltage testing device, the electrical equipment of the power distribution network is placed on top of the base plate. A motor is then started to rotate the threaded rod, which in turn moves a threaded plate upwards. This upward movement of the threaded plate moves a push block upwards, which in turn moves a slider closer to the threaded rod. The slider's movement causes a clamping block to move relative to the threaded rod, thus clamping and fixing the electrical equipment. Then, the hydraulic rod is activated to move the pressure block downwards, pressing the electrical equipment down. Simultaneously, a rubber sleeve is used to block current, reducing electrical leakage and improving the device's safety and efficiency. This also helps prevent the electrical equipment from shifting.

[0004] In summary, the following technical problems exist in the existing technology: Although the existing technology can fix electrical equipment during use, during the pressure application process, if the worker has just placed the electrical equipment on the base plate, there may be a risk of misoperation, such as applying pressure before the worker has time to withdraw their hand, which poses a safety hazard. Therefore, we propose a withstand voltage test device for electrical equipment in power distribution networks. Utility Model Content

[0005] The purpose of this invention is to provide a withstand voltage test device for electrical equipment in power distribution networks to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A withstand voltage test device for electrical equipment in a power distribution network includes a frame, support columns, and a test bench. Multiple support columns are evenly distributed and fixed at the bottom of the inner side of the frame, and a test bench is fixed at the top of the multiple support columns. A pressure applying mechanism is assembled at the top of the inner side of the frame, and the pressure applying mechanism is used to apply pressure to the electrical equipment on the test bench.

[0008] Preferably, the pressure applying mechanism includes a first hydraulic rod, a U-shaped force applying frame, guide rails, and a pressure rod. The first hydraulic rod is fixed to the top of the inner side of the frame, and the output end of the first hydraulic rod is fixed to the U-shaped force applying frame. Guide rails are slidably connected to both ends of the U-shaped force applying frame, and the tops of the guide rails are fixed to the frame. A pressure rod is fixed to the bottom of the U-shaped force applying frame.

[0009] Preferably, a foolproof mechanism is installed between the U-shaped force-applying frame and the guide rail, the foolproof mechanism being used to protect the pressure application process.

[0010] Preferably, the error-proof mechanism includes an extension bar, a support rod, an L-shaped plate, a T-shaped frame, an L-shaped rod, and an interference rod. An extension bar is fixed to one side of the U-shaped force-applying frame. A support rod is rotatably connected to one end of the extension bar. An L-shaped plate is rotatably connected to one end of the support rod. A T-shaped frame is rotatably connected to the bend of the L-shaped plate. Both ends of the T-shaped frame are fixed to the guide rail. An L-shaped rod is fixed to one end of the L-shaped plate. An interference rod is fixed to one end of the L-shaped rod.

[0011] Preferably, an auxiliary mechanism is installed between the frame and the test bench, the auxiliary mechanism being used to fix the electrical equipment.

[0012] Preferably, the auxiliary mechanism includes a support column, a directional plate, an L-shaped tie rod, a positioning frame, a guide groove, a first protruding plate, a second hydraulic rod, a horizontal rod, and a second protruding plate. The support column is fixed at the center of the bottom of the test bench. The bottom of the support column is fixed to the frame. The directional plate is rotatably connected to the outer side of the support column. Each of the four corners of the directional plate is rotatably connected to an L-shaped tie rod. One end of each L-shaped tie rod is rotatably connected to a positioning frame. Multiple guide grooves are evenly distributed on the top of the test bench. The inner side of the guide groove is slidably connected to the positioning frame. The bottom of two positioning frames is respectively fixed with a first protruding plate and a second protruding plate. The bottom of the first protruding plate is fixed with two second hydraulic rods by bolts. A horizontal rod is fixed to the output end of the two second hydraulic rods. The horizontal rod is fixed to the second protruding plate.

[0013] It is clear without a doubt that the technical solution described above in this application can solve the technical problem that this application aims to address.

[0014] At the same time, through the above technical solutions, this utility model has at least the following beneficial effects:

[0015] 1. Through the structural design of the pressure application mechanism and the foolproof mechanism, this utility model enables the device to prevent accidental injury to the operator's hand by swinging the interference rod during the pressure application process on electrical equipment, thereby improving the safety of the device.

[0016] 2. Through the structural design of the auxiliary mechanism, this utility model enables the device to quickly position and fix electrical equipment, making the pressure application process more stable. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the connection structure between the frame and the first hydraulic rod of this utility model;

[0020] Figure 3 This is a schematic diagram of the connection structure between the L-shaped rod and the interference rod of this utility model;

[0021] Figure 4 This is a schematic diagram of the connection structure between the load-bearing column and the test bench of this utility model;

[0022] Figure 5 This is a schematic diagram of the connection structure between the steering plate and the L-shaped tie rod of this utility model.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] In the diagram: 1. Frame; 2. Support column; 3. Test bench; 4. First hydraulic rod; 5. U-shaped force application frame; 6. Guide rail; 7. Pressure bar; 8. Extension bar; 9. Support rod; 10. L-shaped plate; 11. T-frame; 12. L-shaped rod; 13. Interference rod; 14. Bearing column; 15. Direction plate; 16. L-shaped tie rod; 17. Positioning frame; 18. Guide groove; 19. First protruding plate; 20. Second hydraulic rod; 21. Horizontal rod; 22. Second protruding plate. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0026] Example 1

[0027] Reference Figure 1-3A withstand voltage test device for electrical equipment in a power distribution network includes a frame 1, support columns 2, and a test bench 3. Multiple support columns 2 are evenly distributed and fixed at the bottom of the inner side of the frame 1, and a test bench 3 is fixed at the top of the multiple support columns 2. A pressure applying mechanism is assembled at the top of the inner side of the frame 1. The pressure applying mechanism is used to apply pressure to the electrical equipment on the test bench 3. In this embodiment, the electrical equipment is an electrical box, model GB203012002, manufactured by Haofuman.

[0028] The pressure-applying mechanism includes a first hydraulic rod 4, a U-shaped force-applying frame 5, a guide rail 6, and a pressure rod 7. The first hydraulic rod 4, model DYTZ1000-500, is fixed to the top of the inner side of the frame 1. The output end of the first hydraulic rod 4 is fixed to the U-shaped force-applying frame 5. The two ends of the U-shaped force-applying frame 5 are slidably connected to the guide rail 6. The top of the guide rail 6 is fixed to the frame 1. The bottom of the U-shaped force-applying frame 5 is fixed to the pressure rod 7. The pressure rod 7 is connected to the U-shaped force-applying frame 5 by threaded fixing. In other embodiments, different specifications of pressure rod 7 can be replaced to adapt to the testing of different electrical equipment.

[0029] A foolproof mechanism is installed between the U-shaped force-applying frame 5 and the guide rail 6 to protect against the pressure application process. The foolproof mechanism includes an extension bar 8, a support rod 9, an L-shaped plate 10, a T-shaped frame 11, an L-shaped rod 12, and an interference rod 13. An extension bar 8 is fixed to one side of the U-shaped force-applying frame 5. One end of the extension bar 8 is rotatably connected to the support rod 9. One end of the support rod 9 is rotatably connected to the L-shaped plate 10. The T-shaped frame 11 is rotatably connected to the bend of the L-shaped plate 10. Both ends of the T-shaped frame 11 are fixed to the guide rail 6. One end of the L-shaped plate 10 is fixed to the L-shaped rod 12. One end of the L-shaped rod 12 is fixed to the interference rod 13. The interference rod 13 is located at the outer edge of the test bench 3 and there is a gap between it and the test bench 3. When the interference rod 13 rotates, there will be no motion interference between it and the test bench 3.

[0030] Example 2

[0031] Further optimizations to Example 1, specifically, such as... Figure 4-5 As shown, an auxiliary mechanism is installed between the frame 1 and the test bench 3. The auxiliary mechanism is used to fix the electrical equipment.

[0032] The auxiliary mechanism includes a support column 14, a directional plate 15, an L-shaped tie rod 16, a positioning frame 17, a guide groove 18, a first protruding plate 19, a second hydraulic rod 20, a horizontal bar 21, and a second protruding plate 22. The support column 14 is fixed at the center of the bottom of the test bench 3. The bottom of the support column 14 is fixed to the frame 1. The directional plate 15 is rotatably connected to the outer side of the support column 14. Each of the four corners of the directional plate 15 is rotatably connected to an L-shaped tie rod 16. One end of each L-shaped tie rod 16 is rotatably connected to a positioning frame 17. Multiple guide grooves 18 are evenly distributed on the top of the test bench 3. The inner side of each guide groove 18 is slidably connected to the positioning frame 17. The bottoms of two positioning frames 17 are respectively fixed with a first protruding plate 19 and a second protruding plate 22. The bottom of the first protruding plate 19 is fixed with two second hydraulic rods 20 by bolts. The second hydraulic rods 20 are of model DYTZW. A horizontal rod 21 is fixed to the output end of each of the two second hydraulic rods 20. The horizontal rod 21 is fixed to the second protruding plate 22. When the electrical equipment is placed on the test bench 3, the second hydraulic rods 20 are activated, causing the output end of the second hydraulic rods 20 to retract. Because the output end of the second hydraulic rods 20 is fixed to the horizontal rod 21, and the horizontal rod 21 is fixed to the second protruding plate 22, and the bottom of the first protruding plate 19 is fixed to the second hydraulic rods 20 by bolts, the two positioning frames 17 can move along the inner side of the guide groove 18. Because the positioning frames 17 are rotatably connected to the L-shaped tie rod 16, and the L-shaped tie rod 16 is rotatably connected to the direction plate 15, the direction plate 15 can rotate, causing all the positioning frames 17 to move along the inner side of the guide groove 18 toward the direction of the electrical equipment, until the multiple positioning frames 17 fix the electrical equipment in place.

[0033] In summary:

[0034] This utility model addresses the technical problem of: while existing technologies can secure electrical equipment, during the application of pressure, if a worker has just placed the equipment on the base plate, there is a possibility of misoperation where pressure is applied before the worker has had time to withdraw their hand, posing a safety hazard; the present invention employs the technical solutions described in the above embodiments. Furthermore, the implementation process of the above technical solutions is as follows:

[0035] During use, the stroke of the output end of the first hydraulic rod 4 is first set by the controller. Then, the electrical equipment is placed on the test bench 3, and the first hydraulic rod 4 is started. The output end of the first hydraulic rod 4 pushes the U-shaped force-applying frame 5 and the pressure rod 7 downward, applying pressure to the electrical equipment through the pressure rod 7. After the pressure is applied, the output end of the first hydraulic rod 4 retracts. The deformation of the electrical equipment is observed to reflect the load-bearing capacity of the electrical equipment. During the pressure application, the U-shaped force-applying frame 5 drives the extension bar 8 to move downward synchronously. Because the extension bar 8 is rotatably connected to the support rod 9, the support rod 9 is rotatably connected to the L-shaped plate 10, and the L-shaped plate 10 is rotatably connected to the T-shaped frame 11, and the L-shaped plate 10 is fixed to the L-shaped rod 12, the extension bar 8 can pull the L-shaped plate 10 to rotate through the support rod 9, thereby causing the L-shaped plate 10 to drive the T-shaped frame 11 and the interference rod 13 to rotate synchronously, sweeping across one side of the electrical equipment to prevent injury to the staff due to failure to withdraw their hands in time.

[0036] Permissible deformation of electrical equipment: The permissible deformation δ is set according to the electrical equipment standard (GB / T2423.44), where δ is 2mm; the test deformation of electrical equipment is δmax, and the judgment rule is as follows:

[0037] If δmax≤δ, it is judged as "qualified";

[0038] If δmax > δ, it is judged as "unqualified", and the maximum deformation and the time of occurrence are recorded.

[0039] The test data recording table is as follows:

[0040]

[0041]

[0042] With the above-mentioned settings, this application will certainly solve the above-mentioned technical problems, and at the same time achieve the following technical effects:

[0043] 1. Through the structural design of the pressure application mechanism and the error prevention mechanism, this utility model makes it easy for the device to prevent accidental operation by driving the interference rod 13 to swing during the pressure application process of electrical equipment, thereby avoiding accidental injury to the operator during the pressing of the pressure rod 7 and improving the safety of the device.

[0044] 2. Through the structural design of the auxiliary mechanism, this utility model enables the device to quickly position and fix electrical equipment, making the pressure application process more stable.

[0045] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A withstand voltage testing device for electrical equipment in a power distribution network, characterized in that, The device includes a frame (1), support columns (2) and a test bench (3). Multiple support columns (2) are evenly distributed and fixed at the bottom of the inner side of the frame (1). A test bench (3) is fixed at the top of the multiple support columns (2). A pressure applying mechanism is assembled at the top of the inner side of the frame (1). The pressure applying mechanism is used to apply pressure to the electrical equipment on the test bench (3).

2. The withstand voltage test device for electrical equipment in a power distribution network according to claim 1, characterized in that, The pressure applying mechanism includes a first hydraulic rod (4), a U-shaped force applying frame (5), a guide rail (6), and a pressure rod (7). The first hydraulic rod (4) is fixed to the top of the inner side of the frame (1). The output end of the first hydraulic rod (4) is fixed to the U-shaped force applying frame (5). The two ends of the U-shaped force applying frame (5) are slidably connected to the guide rail (6). The top of the guide rail (6) is fixed to the frame (1). The bottom of the U-shaped force applying frame (5) is fixed to the pressure rod (7).

3. The withstand voltage test device for electrical equipment in a power distribution network according to claim 2, characterized in that, A foolproof mechanism is installed between the U-shaped force-applying frame (5) and the guide rail (6), which is used to protect the pressure application process.

4. The withstand voltage test device for electrical equipment in a power distribution network according to claim 3, characterized in that, The error-proof mechanism includes an extension bar (8), a support rod (9), an L-shaped plate (10), a T-shaped frame (11), an L-shaped rod (12), and an interference rod (13). An extension bar (8) is fixed to one side of the U-shaped force-applying frame (5). One end of the extension bar (8) is rotatably connected to the support rod (9). One end of the support rod (9) is rotatably connected to the L-shaped plate (10). The T-shaped frame (11) is rotatably connected to the bend of the L-shaped plate (10). Both ends of the T-shaped frame (11) are fixed to the guide rail (6). One end of the L-shaped plate (10) is fixed to the L-shaped rod (12). One end of the L-shaped rod (12) is fixed to the interference rod (13).

5. The withstand voltage test device for electrical equipment in a power distribution network according to claim 1, characterized in that, An auxiliary mechanism is assembled between the frame (1) and the test bench (3), which is used to fix the electrical equipment.

6. The withstand voltage test device for electrical equipment in a power distribution network according to claim 5, characterized in that, The auxiliary mechanism includes a support column (14), a directional plate (15), an L-shaped tie rod (16), a positioning frame (17), a guide groove (18), a first protruding plate (19), a second hydraulic rod (20), a horizontal rod (21), and a second protruding plate (22). The support column (14) is fixed at the center of the bottom of the test bench (3). The bottom of the support column (14) is fixed to the frame (1). The directional plate (15) is rotatably connected to the outside of the support column (14). The four corners of the directional plate (15) are rotatably connected to L-shaped tie rods (16). (16) is rotatably connected to a positioning frame (17) at one end. Multiple guide grooves (18) are evenly distributed on the top of the test bench (3). The inner side of the guide groove (18) is slidably connected to the positioning frame (17). The bottom of the two positioning frames (17) is respectively fixed with a first protrusion plate (19) and a second protrusion plate (22). The bottom of the first protrusion plate (19) is fixed with two second hydraulic rods (20) by bolts. The output end of the two second hydraulic rods (20) is fixed with a horizontal rod (21). The horizontal rod (21) is fixed to the second protrusion plate (22).

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