Bus clamping device of low-voltage power distribution cabinet

Abstract

The utility model discloses a low voltage power distribution cabinet bus clamping device comprising an upper clamping plate and a lower clamping plate, the upper clamping plate and the lower clamping plate are respectively provided with an upper groove and a lower groove, the upper groove and the lower groove are arranged oppositely, the upper clamping plate is provided with an upper clamping groove communicated with the upper groove, and the lower clamping plate is provided with a lower clamping groove communicated with the lower groove. A lower clamping groove communicated with the lower groove is formed in the lower clamping plate, and the upper clamping groove is opposite to the lower clamping groove; two screws are fixedly installed on the lower clamping plate upwards, two receding holes allowing the screws to penetrate are formed in the upper clamping plate in a penetrating mode, and a connecting structure capable of being synchronously connected with the two screws is installed on the upper clamping plate. The bus clamping device of the low-voltage power distribution cabinet has the advantages of being capable of achieving rapid and synchronous clamping, saving time and labor and being high in stability.

Description

Technical Field

[0001] This utility model relates to the field of power distribution equipment technology, and in particular to a low-voltage distribution cabinet busbar clamping device. Background Technology

[0002] Low-voltage distribution cabinets are electrical distribution equipment used for power distribution, control, metering, and cable connection. Each distribution cabinet is equipped with a busbar for connecting the power supply. The function of the distribution cabinet is to introduce the power supply from the busbar to the electrical equipment through circuit breakers, contactors, and frequency converters. A busbar clamp is a clamp made of insulating material used to fix the busbar, and it is commonly used to fix the busbar in low-voltage electrical distribution cabinets.

[0003] The current busbar clamp structure includes an upper clamp plate and a lower clamp plate. Both sides of the upper and lower clamp plates are fixed by long screws passing through and connecting with nuts. During connection, it is difficult to achieve uniformity in the fit between the long screws and nuts on both sides of the busbar clamp, and the installation is time-consuming and labor-intensive. Its disadvantages are particularly prominent when on-site maintenance and when rapid installation is required. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by this patent application is how to provide a low-voltage distribution cabinet busbar clamping device that can achieve rapid synchronous clamping, save time and effort, and has high stability.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A low-voltage distribution cabinet busbar clamping device includes an upper clamping plate and a lower clamping plate. The upper clamping plate and the lower clamping plate are respectively provided with an upper groove and a lower groove, which are arranged opposite each other. The upper clamping plate is provided with an upper slot communicating with the upper groove, and the lower clamping plate is provided with a lower slot communicating with the lower groove, which are arranged opposite each other. Two screws are fixedly installed on the lower clamping plate upwards. The upper clamping plate is provided with two clearance holes that allow the screws to pass through. A connection structure that can be synchronously connected to the two screws is installed on the upper clamping plate.

[0007] In this design, the upper and lower clamping plates are equipped with upper and lower locking slots for securing the busbar. The lower clamping plate is fixed inside the distribution cabinet. The busbar is inserted into the lower locking slot on the lower clamping plate. With the upper clamping plate aligned with the lower clamping plate, the busbar is inserted into the upper locking slot. As the upper clamping plate moves closer to the lower clamping plate, the screws pass through the clearance holes. The connecting structure simultaneously locks the two screws, ensuring that the upper and lower clamping plates clamp and secure the busbar. This design is simple to operate and allows for a more balanced clamping force between the upper and lower clamping plates, resulting in better clamping performance.

[0008] Preferably, the connection structure includes two mounting ports on the upper clamping plate. The mounting ports are coaxially arranged with the clearance holes and communicate with them. A nut sleeve is installed in the mounting port through a bearing. A nut that can be threadedly connected to the screw is fixedly installed in the nut sleeve. A worm gear is fixedly installed at the upper end of the nut sleeve. The worm gear has a through hole that allows the screw to pass through along the axial direction.

[0009] Two supports are installed on the upper clamp plate opposite the worm gear. A worm is rotatably mounted on the support and meshes with the worm gear. The two worms are coaxially and fixedly connected by a connecting rod. A knob is fixedly installed at one end of the worm.

[0010] Preferably, a guide structure is further provided between the upper clamping plate and the lower clamping plate; the guide structure includes a guide rod fixedly installed on the lower clamping plate, and the upper clamping plate is provided with a guide hole that slides with the guide rod.

[0011] Preferably, at least two guide rods are spaced apart.

[0012] Preferably, the sum of the depths of the upper groove, upper slot, lower groove, and lower slot is less than the height of the busbar copper bus.

[0013] In summary, this low-voltage distribution cabinet busbar clamping device has the advantages of enabling rapid synchronous clamping, saving time and effort, and high stability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a low-voltage distribution cabinet busbar clamping device according to the present invention.

[0015] Figure 2 for Figure 1 A diagram showing another location.

[0016] Figure 3 This is a cross-sectional view of a low-voltage distribution cabinet busbar clamping device according to the present invention.

[0017] Figure 4 for Figure 3 Enlarged diagram of point A in the middle. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings. In the description of the present invention, it should be understood that directional terms such as "upper," "lower," "top," and "bottom" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are used only for the convenience of describing the present invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of the present invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0019] like Figure 1-4 As shown, a low-voltage distribution cabinet busbar clamping device includes an upper clamping plate 1 and a lower clamping plate 2. The upper clamping plate and the lower clamping plate are respectively provided with an upper groove and a lower groove, which are arranged opposite each other. The upper clamping plate is provided with an upper slot 3 communicating with the upper groove, and the lower clamping plate is provided with a lower slot 4 communicating with the lower groove, which are arranged opposite each other. Two screws 5 are fixedly installed upward on the lower clamping plate. The upper clamping plate is provided with two clearance holes that allow the screws to pass through. A connection structure that can be synchronously connected with the two screws is installed on the upper clamping plate.

[0020] In this design, the upper and lower clamping plates are equipped with upper and lower locking slots for securing the busbar. The lower clamping plate is fixed inside the distribution cabinet. The busbar is inserted into the lower locking slot on the lower clamping plate. With the upper clamping plate aligned with the lower clamping plate, the busbar is inserted into the upper locking slot. As the upper clamping plate moves closer to the lower clamping plate, the screws pass through the clearance holes. The connecting structure simultaneously locks the two screws, ensuring that the upper and lower clamping plates clamp and secure the busbar. This design is simple to operate and allows for a more balanced clamping force between the upper and lower clamping plates, resulting in better clamping performance.

[0021] In implementation, the connection structure includes two mounting ports on the upper clamping plate. The mounting ports are coaxially arranged with the clearance holes and communicate with them. A nut sleeve 7 is installed in the mounting port through a bearing 6. A nut 8 that can be threadedly connected to the screw is fixedly installed in the nut sleeve. A worm gear 9 is fixedly installed at the upper end of the nut sleeve. The worm gear has a through hole that allows the screw to pass through along the axial direction.

[0022] Two supports 10 are installed on the upper clamp plate opposite the worm gear. A worm 11 is rotatably mounted on the supports. The worm meshes with the worm gear. The two worms are coaxially and fixedly connected by a connecting rod 12. A knob 13 is fixedly installed at one end of the worm.

[0023] In this way, when fixing the upper and lower clamping plates, the screw is passed through the clearance hole and aligned with the nut. Turning the knob drives the worm and connecting rod to rotate. The worm meshes with the turbine, driving the worm wheel to rotate. The worm wheel drives the nut sleeve and the nut to rotate, so that the nut is threaded onto the screw. Through a single power input, the two nuts rotate synchronously, achieving locking between the nut and the screw. For disassembly, simply turn the knob in the opposite direction. This connection structure requires separate installation of nuts on both screws, resulting in a more stable connection between the upper and lower clamping plates.

[0024] In implementation, a guide structure is also provided between the upper and lower clamping plates; the guide structure includes a guide rod 14 fixedly installed on the lower clamping plate, and a guide hole through which the guide rod slides. The guide structure guides the movement of the upper and lower clamping plates.

[0025] In practice, at least two guide rods are spaced at intervals to improve the reliability of guidance.

[0026] In practice, the sum of the depths of the upper groove, upper slot, lower groove, and lower slot is less than the height of the busbar copper bus. The upper and lower clamping plates can be used to press and fix the busbar.

[0027] Finally, it should be noted that those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A low-voltage distribution cabinet busbar clamping device, comprising an upper clamping plate (1) and a lower clamping plate (2), wherein the upper clamping plate and the lower clamping plate are respectively provided with an upper groove and a lower groove, the upper groove and the lower groove being directly opposite each other, the upper clamping plate being provided with an upper slot (3) communicating with the upper groove, and the lower clamping plate being provided with a lower slot (4) communicating with the lower groove, the upper slot and the lower slot being directly opposite each other; characterized in that, The lower clamping plate is fixedly mounted with two screws (5) facing upwards. The upper clamping plate is provided with two clearance holes that allow the screws to pass through. The upper clamping plate is equipped with a connection structure that can be synchronously connected with the two screws.

2. The low-voltage distribution cabinet busbar clamping device according to claim 1, characterized in that, The connection structure includes two mounting ports on the upper clamp plate. The mounting ports are coaxially arranged with the clearance holes and communicate with the clearance holes. A nut sleeve (7) is installed in the mounting port through a bearing (6). A nut (8) that can be threadedly connected to the screw is fixedly installed in the nut sleeve. A worm gear (9) is fixedly installed at the upper end of the nut sleeve. The worm gear has a through hole that allows the screw to pass through along the axial direction. Two supports (10) are installed on the upper clamp plate opposite the worm wheel. A worm (11) is rotatably installed on the support. The worm meshes with the worm wheel. The two worms are coaxially and fixedly connected by a connecting rod (12). A knob (13) is fixedly installed at one end of the worm.

3. The low-voltage distribution cabinet busbar clamping device according to claim 2, characterized in that, A guide structure is also provided between the upper clamping plate and the lower clamping plate; the guide structure includes a guide rod (14) fixedly installed on the lower clamping plate, and the upper clamping plate is provided with a guide hole that slides with the guide rod.

4. The low-voltage distribution cabinet busbar clamping device according to claim 3, characterized in that, The guide rods are spaced at least two apart.

5. A low-voltage distribution cabinet busbar clamping device according to claim 1, characterized in that, The sum of the depths of the upper groove, upper slot, lower groove, and lower slot is less than the height of the busbar copper bus.

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