A grabbing device for network transformer water pressure test

Abstract

This utility model relates to the field of network transformer testing technology, and discloses a gripping device for water withstand voltage testing of network transformers. It includes a flat belt with mounting plates at both ends. An adjusting plate is mounted on the outside of each mounting plate, and a driven wheel is mounted on the inside of each mounting plate. Limiting sheet metal is provided on both the front and rear sides of the flat belt, with both ends of the limiting sheet metal fixedly connected to the mounting plates. A support block is welded to the lower end of the limiting sheet metal, and a motor module is located in the middle of the lower end of the limiting sheet metal. The material blocking component of this utility model uses a cylinder drive combined with a sliding sleeve guide to ensure smooth and uninterrupted movement of the material blocking rod. The buffer design of the floating block reduces the impact between the fixture and the material blocking structure. Furthermore, the material misalignment component, through the cooperation of a high-precision cylinder with a magnetic ring and a control system, achieves precise control of the misalignment distance, significantly improving the gripping success rate of the gripping mechanism and reducing product damage and efficiency losses caused by gripping failures.

Description

Technical Field

[0001] This utility model relates to the field of network transformer testing technology, specifically a gripping device for water withstand voltage testing of network transformers. Background Technology

[0002] Water withstand voltage testing of network transformers is a crucial step in the network transformer manufacturing process. It primarily tests the electrical insulation performance of network transformers in simulated underwater or humid environments. The core principle involves placing the network transformer in a specific fixture, which is then transported to the test area via a conveyor line. The transformer is immersed in water, and a specific voltage is applied to detect any insulation defects such as leakage or breakdown. This test directly impacts the safety and reliability of the network transformer in practical use, especially in humid environments and underwater applications, where the accuracy of the test results is paramount.

[0003] However, existing technologies have several significant problems. First, traditional material-blocking devices either use rigid baffles lacking cushioning, causing deformation or displacement of the fixture upon impact, leading to inaccurate positioning; or they use simple cylinder drives, but the low precision of the cylinder-stopping rod's fit results in jamming during rod movement, leading to increasingly larger deviations in the material-blocking position over time, severely impacting the accuracy of subsequent testing and gripping. Second, the material-grabbing misalignment accuracy is poor; manual or simple mechanical adjustments cannot guarantee consistent fixture misalignment distances each time. The gripping mechanism often fails to grasp due to fixture positional deviations, even damaging the network transformer, reducing production efficiency and increasing product scrap rates. Therefore, we propose a gripping device for water-based withstand voltage testing of network transformers. Utility Model Content

[0004] The purpose of this invention is to provide a gripping device for water withstand voltage testing of network transformers, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a gripping device for water withstand voltage testing of network transformers, comprising a flat belt, mounting plates at both ends of the flat belt, an adjusting plate on the outer side of the mounting plate, a driven wheel on the inner side of the mounting plate, limiting sheet metal on both the front and rear sides of the flat belt, both ends of the limiting sheet metal being fixedly connected to the mounting plate, a support block welded to the lower end of the limiting sheet metal, a motor module at the middle of the lower end of the limiting sheet metal, the flat belt being wound between the motor module and the driven wheel, a fixture at the upper end of the flat belt, a material blocking component and a material picking misalignment component respectively provided at the front end of the flat belt, the material blocking component and the material picking misalignment component being sequentially arranged on the limiting sheet metal along the conveying direction of the flat belt, a bearing transition sheet metal provided on one side of the material picking misalignment component, and the bearing transition sheet metal being fixedly connected to the limiting sheet metal.

[0006] Optionally, the material blocking assembly includes a first mounting block, which is fixed on a limiting sheet metal. A first sliding sleeve is embedded in the first mounting block, and a first material blocking rod is provided through the middle of the first sliding sleeve. A first cylinder is provided at the upper end of the first mounting block, and one end of the first material blocking rod is connected to the output end of the first cylinder through a first floating block.

[0007] Optionally, the first floating block is made of rubber and is detachably connected to the first stop rod via threads.

[0008] Optionally, the material misalignment component includes a second mounting block; the size of the second mounting block is larger than that of the first mounting block, a second cylinder is provided at the upper end of the second mounting block, the second mounting block is fixedly connected to the limiting sheet metal, a second sliding sleeve is embedded in the second mounting block, and a second stop rod is provided through the middle of the second sliding sleeve.

[0009] Optionally, the support block is made of cast iron and is fixedly connected to the adjusting plate and the mounting plate by bolts, and the top height of the support block is consistent.

[0010] Optionally, the motor module includes a servo motor and a reducer, wherein the output end of the servo motor is connected to the input end of the reducer, and the output end of the reducer is connected to a flat belt drive.

[0011] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows:

[0012] The material blocking component in this application uses a cylinder drive and a sliding sleeve guide to ensure smooth and uninterrupted movement of the material blocking rod. The floating block's buffer design reduces the impact between the fixture and the material blocking structure. Furthermore, the material picking misalignment component, through the cooperation of a high-precision cylinder with a magnetic ring and a control system, achieves precise control of the misalignment distance, significantly improving the success rate of the gripping mechanism and reducing product damage and efficiency loss caused by gripping failures.

[0013] This application ensures the conveyor line is level precisely by adjusting the plate. The mounting plate and support block are made of high-strength materials and have standardized connections, which reduces vibration and deformation during the conveying process. Attached Figure Description

[0014] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0015] Figure 1 This is a schematic diagram of the overall structure of a gripping device for water withstand voltage testing of network transformers according to the present invention.

[0016] Figure 2 This is a schematic diagram of the material-blocking component structure of a gripping device for water withstand voltage testing of network transformers according to this utility model;

[0017] Figure 3 This is a schematic diagram of the material misalignment component of a gripping device for water withstand voltage testing of network transformers according to this utility model.

[0018] In the diagram: 1. Adjusting plate; 2. Driven wheel; 3. Mounting plate; 4. Fixture; 5. Limiting sheet metal; 6. Support block; 7. Motor module; 8. Material stop assembly; 9. Material picking misalignment assembly; 10. Flat belt; 11. Bearing transition sheet metal; 81. First cylinder; 82. First floating block; 83. First material stop rod; 84. First sliding sleeve; 85. First mounting block; 91. Second cylinder; 92. Second floating block; 93. Second material stop rod; 94. Second sliding sleeve; 95. Second mounting block. Detailed Implementation

[0019] Please see Figure 1-3This utility model provides a technical solution: a gripping device for water withstand voltage testing of network transformers, including a flat belt 10, with mounting plates 3 at both ends of the flat belt 10, an adjusting plate 1 on the outside of the mounting plate 3, a driven wheel 2 on the inside of the mounting plate 3, and limiting sheet metal 5 on both the front and rear sides of the flat belt 10. The two ends of the limiting sheet metal 5 are fixedly connected to the mounting plate 3, and a support block 6 is welded to the lower end of the limiting sheet metal 5. A motor module 7 is provided in the middle of the lower end of the limiting sheet metal 5. The flat belt 10 is wound between the motor module 7 and the driven wheel 2. A fixture 4 is provided at the upper end of the flat belt 10. A material blocking component 8 and a material picking misalignment component 9 are respectively provided at the front end of the flat belt 10. The material blocking component 8 and the material picking misalignment component 9 are sequentially arranged on the limiting sheet metal 5 along the conveying direction of the flat belt 10. A bearing transition sheet metal 11 is provided on one side of the material picking misalignment component 9, and the bearing transition sheet metal 11 is fixedly connected to the limiting sheet metal 5.

[0020] In this embodiment, an mounting plate 3 is fixedly installed above the adjusting plate 1. The mounting plate 3 is made of thick steel plate and is tightly connected to the adjusting plate 1 by bolts. Anti-slip pads are also provided between the two to prevent the mounting plate 3 from loosening after long-term operation. Multiple support blocks 6 are evenly distributed on the mounting plate 3. The support blocks 6 are made of cast iron and have undergone high-temperature aging treatment to eliminate internal stress, ensuring that their structure is stable and not easily deformed. The top height of the support blocks 6 is consistent, and they jointly support the upper structure of the conveyor line, ensuring that the conveyor will not sink or bend due to uneven load during the conveying process. At the same time, in order to limit the conveying path of the fixture 4, symmetrical limiting sheet metal 5 is provided on both sides of the flat belt 10. Wear-resistant strips are provided on the inner side of the limiting sheet metal 5. The wear-resistant strips are made of polytetrafluoroethylene material, which reduces the friction between the fixture 4 and the limiting sheet metal 5, prevents the sides of the fixture 4 from being scratched, and also reduces the noise during operation.

[0021] In this technical solution, the material blocking assembly 8 includes a first mounting block 85, which is fixed on the limiting sheet metal 5. A first sliding sleeve 84 is embedded in the first mounting block 85. A first material blocking rod 83 is provided through the middle of the first sliding sleeve 84. A first cylinder 81 is provided at the upper end of the first mounting block 85. One end of the first material blocking rod 83 is connected to the output end of the first cylinder 81 through a first floating block 82.

[0022] In this embodiment, the material blocking component 8 is located in the middle of the feeding conveyor line of the fixture 4. It is mainly used to block and position the fixture 4 when it reaches the testing or material picking position, so as to ensure that the fixture 4 stays stably in the preset position. When the fixture 4 needs to be positioned, the piston rod of the first cylinder 81 slowly extends after receiving the signal, driving the first material blocking rod 83 to move along the first sliding sleeve 84 until the first floating block 82 contacts the side of the fixture 4, blocking the fixture 4 from continuing to move. When it is necessary to release, the piston rod of the first cylinder 81 slowly retracts, the first material blocking rod 83 resets, and the fixture 4 continues to move with the flat belt 10.

[0023] In this technical solution, the first floating block 82 is made of rubber and is detachably connected to the first stop rod 83 by threads.

[0024] In this technical solution, the material misalignment component 9 includes a second mounting block 95; the size of the second mounting block 95 is larger than the size of the first mounting block 85, a second cylinder 91 is provided at the upper end of the second mounting block 95, the second mounting block 95 is fixedly connected to the limiting sheet metal 5, a second sliding sleeve 94 is embedded in the second mounting block 95, and a second stop rod 93 is provided through the middle of the second sliding sleeve 94.

[0025] In this embodiment, the material misalignment component 9 is located downstream of the material blocking component 8 and works in conjunction with it. After the fixture 4 is stopped, it pushes the fixture 4 a certain distance perpendicular to the conveying direction to achieve misalignment, placing the network transformer in the optimal gripping position of the gripping mechanism. When the material blocking component 8 stops the fixture 4, the control system detects the fixture 4's arrival signal, and the second cylinder 91 of the material misalignment component 9 is activated. The piston rod extends according to a preset stroke, pushing the fixture 4 to move perpendicular to the conveying direction via the second material blocking rod 93 and the second floating block 92. After misalignment is completed, a magnetic switch sends a signal, and the gripping mechanism begins to grip the network transformer. After gripping, the piston rod of the second cylinder 91 retracts, the fixture 4 returns to the initial conveying path, the material blocking component 8 is then reset, and the fixture 4 continues to move with the flat belt 10 to the next stage.

[0026] In this technical solution, the support block 6 is made of cast iron and is fixedly connected to the adjusting plate 1 and the mounting plate 3 by bolts, and the top height of the support block 6 is consistent.

[0027] In this embodiment, the support block 6 provides effective support for the flat belt 10, thus ensuring the stability of the flat belt 10 during operation.

[0028] In this technical solution, the motor module 7 includes a servo motor and a reducer. The output end of the servo motor is connected to the input end of the reducer, and the output end of the reducer is connected to the flat belt 10 for transmission.

[0029] In this embodiment, the flat belt 10 is driven by the motor module 7 to transport the network transformer, which facilitates the subsequent grasping of the network transformer.

Claims

1. A grabbing device for water pressure test of network transformer, characterized in that: The device includes a flat belt (10), with mounting plates (3) at both ends. An adjusting plate (1) is provided on the outside of the mounting plate (3), and a driven wheel (2) is provided on the inside of the mounting plate (3). Limiting sheet metal (5) is provided on both the front and rear sides of the flat belt (10). Both ends of the limiting sheet metal (5) are fixedly connected to the mounting plate (3). A support block (6) is welded to the lower end of the limiting sheet metal (5). A motor module (7) is provided in the middle of the lower end of the limiting sheet metal (5). The flat belt (10) is wound between the motor module (7) and the driven wheel (2). A fixture (4) is provided at the upper end of the flat belt (10). The front end of the flat belt (10) is respectively provided with a material blocking component (8) and a material picking misalignment component (9), and the material blocking component (8) and the material picking misalignment component (9) are sequentially arranged on the limiting sheet metal (5) along the conveying direction of the flat belt (10); The material picking misalignment component (9) is provided with a bearing transition sheet metal (11) on one side, and the bearing transition sheet metal (11) is fixedly connected to the limiting sheet metal (5).

2. The gripping device for water withstand voltage testing of network transformers according to claim 1, characterized in that: The material blocking assembly (8) includes a first mounting block (85), which is fixed on the limiting sheet metal (5). A first sliding sleeve (84) is embedded in the first mounting block (85). A first material blocking rod (83) is provided through the middle of the first sliding sleeve (84). A first cylinder (81) is provided at the upper end of the first mounting block (85). One end of the first material blocking rod (83) is connected to the output end of the first cylinder (81) through a first floating block (82).

3. The gripping device for water withstand voltage testing of network transformers according to claim 2, characterized in that: The first floating block (82) is made of rubber and is detachably connected to the first stop rod (83) by threads.

4. The gripping device for water withstand voltage testing of network transformers according to claim 3, characterized in that: The material picking misalignment component (9) includes a second mounting block (95); the size of the second mounting block (95) is larger than the size of the first mounting block (85), a second cylinder (91) is provided at the upper end of the second mounting block (95), the second mounting block (95) is fixedly connected to the limiting sheet metal (5), a second sliding sleeve (94) is embedded in the second mounting block (95), and a second stop rod (93) is provided through the middle of the second sliding sleeve (94).

5. The gripping device for water withstand voltage testing of network transformers according to claim 4, characterized in that: The support block (6) is made of cast iron and is fixedly connected to the adjusting plate (1) and the mounting plate (3) by bolts. The top height of the support block (6) is consistent.

6. The gripping device for water withstand voltage testing of network transformers according to claim 5, characterized in that: The motor module (7) includes a servo motor and a reducer. The output end of the servo motor is connected to the input end of the reducer, and the output end of the reducer is connected to the flat belt (10) for transmission.

Images