Sealing cover plate for low-voltage junction box of transformer
By designing several clamping devices on the sealing cover of the transformer low-voltage junction box, including knobs, press plates, rotary rods, elastic bodies, baffles and L-shaped plates, the problem of disassembly and assembly of the sealing cover in the prior art is solved, and the effect of rapid disassembly and assembly and improvement of safety and stability is achieved.
Patent Information
- Application Number
- CN202421453686.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-25
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-06-25
AI Technical Summary
Existing transformer low-voltage junction box sealing covers are usually connected by screws, and specific tools are required for disassembly and replacement, which takes a long time and leads to inefficient disassembly and assembly.
A transformer low-voltage junction box sealing cover is designed. By setting up several clamping devices, the sealing cover is quickly fixedly installed on the junction box without using tools. The clamping device includes a knob, a pressing plate, a rotary rod, an elastic body, a baffle and an L-shaped plate. The status of each clamping device is visually displayed through the indicator arrows at the top of the knob, and an upward thrust is provided through the elastomer to prevent the clamping device from loosening due to external forces or vibrations.
It realizes rapid disassembly and assemble the seal cover without using tools, improves disassembly and assemble efficiency, and improves safety and stability through the design of the elastic body, avoiding the clamping device being loosened due to external forces or vibration.
Smart Images
Figure CN222939743U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of transformer junction boxes, and particularly relates to a sealing cover plate for a transformer low-voltage junction box. Background Art
[0002] A transformer is an electrical device mainly used to change the magnitude of voltage in an alternating current system. It works based on the principle of electromagnetic induction and can convert electrical energy from one voltage level to another without changing the current frequency. Transformers are widely used in multiple fields such as power systems, industrial equipment, and household appliances. A transformer low-voltage junction box is an electrical component used to connect wires. It can connect multiple wires together or lead out wires, making the circuit neater, reducing wire intersections, and improving the reliability of the circuit.
[0003] However, the existing sealing cover plates for transformer low-voltage junction boxes usually use screw connections, which require specific tools for disassembly and replacement and take a long time. Therefore, researching new sealing cover plates for transformer low-voltage junction boxes and solving the above problems are of great significance for improving the disassembly and assembly efficiency of the sealing cover plates for transformer low-voltage junction boxes. Summary of the Utility Model
[0004] To solve the above problems, the utility model provides a sealing cover plate for a transformer low-voltage junction box. The sealing cover plate for the transformer low-voltage junction box can quickly fix and install the sealing cover plate on the junction box without using tools through a plurality of clamping devices arranged, improving the disassembly and assembly efficiency; through the indicating arrow arranged on the top of the knob, the state of each clamping device can be intuitively displayed, thus facilitating the disassembly of the sealing cover plate; through the elastic body sleeved on the rotating rod and fixedly connected to the pressing plate and the cover body at both ends respectively, an upward thrust is always provided to the L-shaped plate, thus preventing the clamping device from loosening due to external force or vibration, thereby improving the safety and stability.
[0005] The technical solution of the utility model is as follows:
[0006] A sealing cover plate for the low-voltage terminal box of a transformer, comprising a sealing cover plate which is installed on the mounting hole of the terminal box. The sealing cover plate includes a cover plate body and a plurality of clamping devices. The cover plate body is detachably installed on the mounting hole of the terminal box through the plurality of clamping devices. The clamping device includes a knob, a pressing plate, a rotating rod, an elastic body, a baffle and an L-shaped plate. The rotating rod rotatably passes through the cover plate body. The knob is detachably installed at the top of the rotating rod and is located above the cover plate body. The pressing plate is detachably coaxially installed on the rotating rod and is located above the cover plate body. The elastic body is sleeved on the rotating rod and is fixedly connected to the pressing plate and the cover plate body at both ends respectively. The baffle is coaxially fixedly installed on the rotating rod and is located below the cover plate body. The L-shaped plate includes a short plate, a long plate and a hole. The hole is arranged on the long plate. The L-shaped plate is fixedly connected to the rotating rod through the hole and is located below the baffle. The short plate of the L-shaped plate faces upward, and the distance from the short plate to the axis of the rotating rod is not less than the shortest distance from the axis of the rotating rod to the adjacent edge of the mounting hole.
[0007] The sealing cover plate includes four clamping devices.
[0008] In order to ensure that the force is evenly applied during clamping and avoid deformation of the cover plate body caused by uneven force, the plurality of clamping devices are symmetrically arranged on the cover plate body.
[0009] In order to visually display the state of each clamping device, thus facilitating the disassembly of the sealing cover plate, an indicating arrow is provided at the top of the knob, and the indicating arrow points in the direction of the short plate.
[0010] In order to increase the friction with the hand and improve the anti-slip property during operation, the outer wall of the knob is provided with knurling.
[0011] The pressing plate is threadedly connected to the rotating rod.
[0012] The outer wall of the pressing plate is provided with knurling.
[0013] In order to always provide an upward thrust to the L-shaped plate, thus avoiding loosening of the clamping device due to external force or vibration, and improving safety and stability, the elastic body is a disc spring.
[0014] A sealing gasket is provided between the sealing cover plate and the terminal box.
[0015] The sealing gasket is a rubber gasket.
[0016] The beneficial effects of the present utility model are as follows:
[0017] 1. For a sealing cover plate for the low-voltage terminal box of a transformer disclosed by the present utility model, through the plurality of clamping devices provided, the sealing cover plate can be quickly and fixedly installed on the terminal box without using tools, improving the disassembly and assembly efficiency.
[0018] 2. The disclosed sealing cover plate for the low-voltage terminal box of a transformer according to the present utility model can visually display the state of each clamping device through the indicating arrow provided at the top of the knob, thus facilitating the disassembly of the sealing cover plate.
[0019] 3. The disclosed sealing cover plate for the low-voltage terminal box of a transformer according to the present utility model always provides an upward thrust to the L-shaped plate through the elastic body sleeved on the rotating rod and fixedly connected to the pressure plate and the cover plate body at both ends, thereby preventing the clamping device from loosening due to external force or vibration, and improving safety and stability. Description of the Drawings
[0020] By reading the detailed description of the preferred embodiments below, the solutions and advantages of the present application will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered as a limitation of the present utility model.
[0021] In the drawings:
[0022] Figure 1 is a top view of a sealing cover plate for the low-voltage terminal box of a transformer according to an embodiment of the present utility model;
[0023] Figure 2 is Figure 1 a sectional view taken along line A-A when the sealing cover plate is in a clamped state in
[0024] Figure 3 is Figure 1 a sectional view taken along line A-A when the sealing cover plate is in a loosened state in
[0025] Figure 4 is Figure 2 an enlarged schematic view of part I in
[0026] Figure 5 is a schematic structural view of the L-shaped plate of a sealing cover plate for the low-voltage terminal box of a transformer according to an embodiment of the present utility model.
[0027] The components represented by the reference numerals in the drawings are:
[0028] The present utility model: 1. Terminal box, 1a. Mounting hole, 2. Sealing cover plate, 2a. Cover plate body, 2b. Clamping device, 2b1. Knob, 2b2. Pressure plate, 2b3. Rotating rod, 2b4. Elastic body, 2b5. Baffle, 2b6. L-shaped plate, 2b61. Short plate, 2b62. Long plate, 2b63. Hole. Detailed Embodiments
[0029] As Figures 1 to 3As shown, a sealing cover plate for a low-voltage terminal box of a transformer includes a sealing cover plate 2, and the sealing cover plate 2 is installed on the mounting hole 1a of the terminal box 1. A sealing gasket is provided between the sealing cover plate 2 and the terminal box 1; preferably, the sealing gasket is a rubber gasket; the rubber gasket has good elasticity and deformability, can effectively fill and seal the tiny gaps between two contact surfaces, prevent the leakage of liquids, gases or solids, has good high-temperature resistance, can be stably used in a high-temperature environment for a long time without losing the sealing performance, and the rubber sealing gasket can be customized according to different requirements and application scenarios, and can be made into sealing gaskets of different shapes, sizes and materials; the sealing cover plate 2 includes a cover plate body 2a and several clamping devices 2b; preferably, the sealing cover plate 2 includes four clamping devices 2b; preferably, the several clamping devices 2b are symmetrically arranged on the cover plate body 2a; the symmetrical arrangement of the clamping devices can ensure that the force is evenly applied during clamping, avoid deformation or damage of the cover plate body caused by uneven force, better clamp the workpiece, improve the clamping efficiency, ensure the workpiece is firmly fixed, reduce the risk of clamping failure, improve the safety and stability of the workpiece, and the symmetrically arranged clamping devices are more convenient and simple to operate, and the operator can clamp the workpiece more easily. The cover plate body 2a is detachably installed on the mounting hole 1a of the terminal box 1 through several clamping devices 2b, such as Figure 1 、 Figure 2 and Figure 4As shown, the clamping device 2b includes a knob 2b1, a pressing plate 2b2, a rotating rod 2b3, an elastic body 2b4, a baffle 2b5 and an L-shaped plate 2b6. The rotating rod 2b3 is rotatably passed through the cover body 2a. The knob 2b1 is detachably installed on the top of the rotating rod 2b3 and is located above the cover body 2a. Preferably, an indicating arrow is provided on the top of the knob 2b1, and the indicating arrow points in the direction of the short plate 2b61; the indicating arrow shows the rotation direction of the knob, enabling the operator to clearly understand the operation direction of the knob, improving the convenience of operation. The indicating arrow is in the same direction as the clamping plate, avoiding misoperation, ensuring that the clamping plate is adjusted and fixed in the correct direction, reducing problems caused by incorrect operation. The operator can quickly and accurately adjust the knob according to the indicating arrow, enabling the clamping plate to quickly and accurately move to the designated position, thereby improving work efficiency; preferably, the outer wall of the knob 2b1 is provided with knurling; the knurling on the outer wall of the knob can increase the friction force, improve the anti-slip property during operation, make the operation more stable and safe. The knurling can increase the surface roughness of the outer wall of the knob, enhancing the comfort of the hand feeling, making the operation easier and more natural. At the same time, the knurling design on the outer wall of the knob can not only improve the aesthetic appearance but also has great advantages in practicality, making the operation more convenient; the pressing plate 2b2 is detachably coaxially installed on the rotating rod 2b3 and is located above the cover body 2a; preferably, the pressing plate 2b2 is threadedly connected to the rotating rod 2b3; the threaded connection can lock itself and is not easy to loosen, providing a relatively stable connection, suitable for occasions where a firm connection needs to be maintained. It can be tightened and disassembled relatively easily without additional tools, enabling the speed of component replacement and repair to be accelerated. The threaded connection is relatively simple, low-cost, and can conveniently adjust the position of the pressing plate on the rotating rod; the outer wall of the pressing plate 2b2 is provided with knurling. The knurling on the outer wall of the knob can increase the friction force, improve the anti-slip property during operation, make the operation more stable and safe; the elastic body 2b4 is sleeved on the rotating rod 2b3 and is fixedly connected to the pressing plate 2b2 and the cover body 2a at both ends respectively. Preferably, the elastic body 2b4 is a disc spring. Compared with the traditional helical spring, the disc spring has a small volume, light weight, can provide a greater elastic force, and has a compact structure, and is relatively convenient to install and use, suitable for occasions with limited space; the baffle 2b5 is coaxially and fixedly installed on the rotating rod 2b3 and is located below the cover body 2a, such as Figure 5As shown, the L-shaped plate 2b6 includes a short plate 2b61, a long plate 2b62, and a hole 2b63. The hole 2b63 is provided on the long plate 2b62. The L-shaped plate 2b6 is fixedly connected to the rotating rod 2b3 through the hole 2b63 and is located below the baffle 2b5. The short plate 2b61 of the L-shaped plate 2b6 faces upward, and the distance from the short plate 2b61 to the axis of the rotating rod 2b3 is not less than the shortest distance from the axis of the rotating rod 2b3 to the adjacent edge of the mounting hole 1a; for the sealing cover plate of the low-voltage terminal box of the transformer, through the provided plurality of clamping devices, the sealing cover plate can be quickly and fixedly installed on the terminal box without using tools, improving the disassembly and assembly efficiency; through the indicating arrow provided at the top of the knob, the state of each clamping device can be intuitively displayed, thus facilitating the disassembly of the sealing cover plate; through the elastic body sleeved on the rotating rod and fixedly connected to the pressing plate and the cover body at both ends respectively, an upward thrust is always provided to the L-shaped plate, thereby preventing the clamping device from loosening due to external force or vibration, thus improving the safety and stability.
[0030] As Figures 1 to 5 As shown, before installing the sealing cover plate 2, first rotate the knob 2b1 on each clamping device 2b so that the arrow at the top of the knob 2b1 is parallel to the edge of the corresponding mounting hole 1a; then install the cover body 2a onto the mounting hole 1a of the terminal box 1, and then press down the knob 2b1 in the clamping device 2b to drive the pressing plate 2b2 to compress the elastic body 2b4 downward, thereby driving the rotating rod 2b3, the baffle 2b5, and the L-shaped plate 2b6 to move downward. After moving in place, rotate the knob 2b1 so that the arrow at the top of the knob 2b1 is perpendicular to the edge of the corresponding mounting hole 1a. At this time, release the pressed knob 2b1. Since the direction of the indicating arrow is the same as the direction of the short plate 2b61, at this time, the short side 2b61 of the L-shaped plate 2b6 is clamped with the terminal box 1, thereby installing the sealing cover plate 2 on the terminal box 1; for the sealing cover plate of the low-voltage terminal box of the transformer, through the provided plurality of clamping devices, the sealing cover plate can be quickly and fixedly installed on the terminal box without using tools, improving the disassembly and assembly efficiency; through the indicating arrow provided at the top of the knob, the state of each clamping device can be intuitively displayed, thus facilitating the disassembly of the sealing cover plate.
Claims
1. A sealing cover plate for a transformer low-voltage junction box, comprising a sealing cover plate (2), wherein the sealing cover plate (2) is mounted on a mounting hole (1a) of a junction box (1), characterized in that: The sealing cover plate (2) comprises a cover plate body (2a) and a plurality of clamping devices (2b); the cover plate body (2a) is detachably mounted on the mounting hole (1a) of the junction box (1) via the plurality of clamping devices (2b); the clamping device (2b) comprises a knob (2b1), a pressure plate (2b2), a rotating rod (2b3), an elastic body (2b4), a baffle (2b5) and an L-shaped plate (2b6); the rotating rod (2b3) rotatably passes through the cover plate body (2a); the knob (2b1) is detachably mounted on the top of the rotating rod (2b3) and is located at the upper part of the cover plate body (2a); the pressure plate (2b2) is detachably mounted coaxially on the rotating rod (2b3) and is located at the upper part of the cover plate body (2a); the elastic body (2b4) The baffle (2b5) is mounted on the rotating rod (2b3) and its two ends are respectively fixedly connected to the pressure plate (2b2) and the cover body (2a); the baffle (2b5) is coaxially fixedly mounted on the rotating rod (2b3) and is located at the lower part of the cover body (2a); the L-shaped plate (2b6) includes a short plate (2b61), a long plate (2b62) and a hole (2b63); the hole (2b63) is arranged on the long plate (2b62); the L-shaped plate (2b6) is fixedly connected to the rotating rod (2b3) through the hole (2b63) and is located at the lower part of the baffle (2b5); the short plate (2b61) of the L-shaped plate (2b6) faces upward; the distance from the short plate (2b61) to the axis of the rotating rod (2b3) is not less than the shortest distance from the axis of the rotating rod (2b3) to the adjacent edge of the mounting hole (1a).
2. A transformer low voltage junction box sealing cover according to claim 1, characterized in that: The sealing cover plate (2) comprises four clamping devices (2b).
3. A transformer low voltage junction box sealing cover plate according to claim 1, characterized in that: The plurality of clamping devices (2b) are symmetrically arranged on the cover plate body (2a).
4. A transformer low voltage junction box sealing cover plate according to claim 1, characterized in that: An indication arrow is arranged on the top of the knob (2b1), and the indication arrow points in the direction of the short plate (2b61).
5. The sealing cover plate of a transformer low-voltage junction box according to claim 1, characterized in that: The outer wall of the knob (2b1) is provided with a knurled pattern.
6. A transformer low voltage junction box sealing cover plate according to claim 1, characterized in that: The pressing plate (2b2) is threadedly connected to the rotating rod (2b3).
7. A transformer low voltage junction box sealing cover plate according to claim 1, characterized in that: The outer wall of the pressing plate (2b2) is provided with a knurled pattern.
8. The sealing cover plate of a transformer low-voltage junction box according to claim 1, characterized in that: The elastic body (2b4) is a disc spring.
9. The sealing cover plate of a transformer low-voltage junction box according to claim 1, characterized in that: A sealing gasket is provided between the sealing cover plate (2) and the junction box (1).
10. A sealing cover plate for a transformer low voltage junction box according to claim 9, characterized in that: The sealing pad is a rubber pad.