High-protection power distribution junction box

Abstract

The utility model discloses a high protection power distribution junction box, which comprises a box body and a box door, the box body and the box door are rotatably connected through a hinge, a longitudinal beam is vertically and fixedly connected in the box body, the left side of the longitudinal beam and the inner wall of the right side of the box body are jointly and fixedly connected with a cross beam, the cross beam is provided with a plurality of strip-shaped holes, and the strip-shaped holes are arranged in the box body. The box body is provided with a longitudinal beam and a cross beam, the longitudinal beam is provided with a plurality of threading holes, the longitudinal beam and the cross beam divide the box body into two installation spaces and a threading space, electronic elements are installed in the installation spaces, three groups of wire clamping assemblies are arranged in the threading space, each group of wire clamping assembly comprises two wire clamping plates, and each wire clamping plate is provided with three arc-shaped grooves. The utility model has the advantages of clear function partition, adaptive multi-specification lead fixing structure, high-strength anti-corrosion support component and reliable sealing performance, thereby meeting the power distribution requirement in complex environment and improving the safety and durability of equipment operation.

Description

Technical Field

[0001] The utility model relates to the technical field of power distribution junction boxes, in particular to a high-protection power distribution junction box. Background Art

[0002] In industrial power systems, outdoor power distribution projects, and large-scale building power supply networks, power distribution junction boxes are critical equipment for energy distribution and control. Their operational stability and protection performance directly impact the safe and reliable operation of the power system. With the diversification of application scenarios, junction boxes must withstand complex operating conditions such as outdoor wind and rain, dust intrusion, industrial environmental vibration, and alternating high and low temperatures. These conditions place stringent demands on the box's structural strength, sealing performance, and internal wire management.

[0003] The existing power distribution junction box has the following technical pain points in actual application: First, the internal structure of the box is not clearly divided, and the electronic component installation area and the wire layout area are mixed with each other, resulting in the wires being tangled. This not only increases the difficulty of maintenance, but also easily causes the insulation layer to be damaged due to friction and extrusion of the wires, causing the risk of short circuit or leakage; second, the wire fixing structure is simply designed, and mostly uses a single specification of clips or bolts for clamping, which is difficult to adapt to power cables, signal lines and grounding wires of different diameters, and is prone to loosening under long-term vibration conditions, resulting in poor contact of the wire joints, affecting the stability of power transmission.

[0004] Therefore, it is necessary to design a high-protection power distribution junction box to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to solve the shortcomings of the existing technology and propose a high-protection power distribution junction box. The utility model has the advantages of clear functional zoning, a fixed structure suitable for multi-specification wires, high-strength anti-corrosion support components and reliable sealing performance, thereby meeting the power distribution needs in complex environments and improving the safety and durability of equipment operation.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A high-protection power distribution junction box includes a box body and a box door, which are rotatably connected by hinges. A longitudinal beam is vertically fixedly connected to the box body, and a cross beam is fixedly connected to the left side of the longitudinal beam and the right inner wall of the box body. The cross beam is provided with a plurality of strip holes, and the longitudinal beam is provided with a plurality of wire threading holes. The longitudinal beam and the cross beam divide the box body into two installation spaces and one wire threading space. Electronic components are installed in the installation space, and three groups of wire clamping assemblies are provided in the wire threading space. Each group of wire clamping assemblies includes two wire clamping plates, and each of the wire clamping plates is provided with three arc grooves.

[0008] Preferably, the three groups of wire clamping assemblies are staggered to the right.

[0009] Preferably, each of the wire clamping plates is provided with three wire fixing components, and the wire fixing components include a movable groove, the arc-shaped groove passes through the movable groove, and the front and rear inner walls of the movable groove are connected to a threaded rod for common rotation through a damping bearing, and two movable blocks are threadedly connected to the threaded rod, and the two movable blocks are slidingly connected to the inner wall of the movable groove, and the left sides of the two movable blocks are fixedly connected to an elastic cloth, and the front side of the threaded rod extends to the outside and is fixedly connected to a knob.

[0010] Preferably, the left and right edges of each threading hole are chamfered.

[0011] Preferably, a sealing strip is provided on the contact edge between the box door and the box body. The sealing strip is made of aging-resistant rubber material and is bonded and fixed to the box door.

[0012] Preferably, the longitudinal beam and the cross beam are integrally stamped from Q235B galvanized steel plates, the thickness of the steel plates is 3-5 mm, the surface of the steel plates is hot-dip galvanized to form a -μm thick zinc layer, the connection parts of the longitudinal beam and the cross beam are fixed by a full welding process, and the welding points are coated with epoxy anti-rust paint for secondary protection.

[0013] Compared with existing technologies, the advantages of this device are:

[0014] Compared with existing technologies, the rational layout of longitudinal and transverse beams clearly divides the box into two installation spaces and one wiring space, achieving physical isolation between electronic component installation and wire routing, avoiding insulation wear and short circuit risks caused by messy wire entanglement, and improving the convenience of subsequent maintenance.

[0015] Compared with the existing technology, the three sets of wire clamping assemblies in the threading space are staggered, and each set of wire clamping assemblies is equipped with a movable block and elastic cloth structure that can be adjusted by a threaded rod. This can not only adapt to wires of different diameters, but also reduce the impact of vibration on the wires through the buffering effect of the damping bearing and elastic cloth. This effectively solves the problems of poor adaptability and easy loosening of traditional fixed structures. At the same time, the main line, branch line and ground wire can be fixed separately, making it easier to quickly find the corresponding wires during subsequent maintenance.

[0016] Compared with the existing technology, the longitudinal beams and cross beams are stamped and formed as a whole using Q235B galvanized steel plates and undergo multiple anti-corrosion treatments. Anti-aging rubber sealing strips are set on the edges of the box doors, and the wire holes are chamfered. The protection level of the box is comprehensively improved from structural strength, sealing performance to wire protection, and the equipment's anti-rust, anti-wear ability and service life in complex environments are significantly enhanced. It can also avoid the wear and damage of the wires during threading. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of a high-protection power distribution junction box proposed by the utility model;

[0018] Figure 2 for Figure 1 Structural diagram from another perspective;

[0019] Figure 3 Schematic diagram of the structure of the clamping plate.

[0020] In the figure: 1 box body, 2 box door, 3 crossbeam, 4 strip-shaped hole, 5 longitudinal beam, 6 wire clamping plate, 7 threading hole, 8 arc groove, 9 movable groove, 10 movable block, 11 elastic cloth, 12 threaded rod, 13 knob. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Reference Figure 1-Figure 3 A high-protection power distribution box includes a box body 1 and a door 2. The box body 1 and the door 2 are connected by a hinge. A sealing strip is provided on the contact edge of the door 2 and the box body 1. The cross-section of the sealing strip is a "U"-shaped structure with a width of 8-10mm. The compression amount is controlled between 30% and 40% to ensure that an effective seal is formed after the door 2 is closed. The protection level can reach IP65. The sealing strip is made of aging-resistant rubber material and is bonded to the door 2. A longitudinal beam 5 is vertically fixed in the box body 1. The left side of the longitudinal beam 5 and the right inner wall of the box body 1 are connected. A crossbeam 3 is fixedly connected together, and a plurality of strip holes 4 are provided on the crossbeam 3. A plurality of threading holes 7 are provided on the longitudinal beam 5. The threading holes 7 are long strips, and the left and right edges of each threading hole 7 are chamfered with a radius of 2-3mm. The longitudinal beam 5 and the crossbeam 3 divide the box body 1 into two installation spaces and one threading space. Electronic components are installed in the installation space. Three groups of wire clamping assemblies are provided in the threading space. The three groups of wire clamping assemblies are offset to the right. Each group of wire clamping assemblies includes two wire clamping plates 6, and each wire clamping plate 6 is provided with three arc grooves 8.

[0023] Among them, each wire clamping plate 6 is provided with three wire fixing components, which include a movable groove 9, an arc groove 8 running through the movable groove 9, and the front and rear inner walls of the movable groove 9 are connected to a threaded rod 12 for rotation through a damping bearing. Two movable blocks 10 are threadedly connected to the threaded rod 12, and the two movable blocks 10 are slidingly connected to the inner wall of the movable groove 9. The left sides of the two movable blocks 10 are fixedly connected to an elastic cloth 11. The elastic cloth 11 is made of chloroprene rubber with a thickness of 1-1.5mm and a stretching ratio of not less than 200%. The surface is provided with diamond anti-slip patterns, and the front side of the threaded rod 12 extends to the outside and is fixedly connected to a knob 13.

[0024] Among them, the longitudinal beam 5 and the cross beam 3 are both stamped and formed as a whole using Q235B galvanized steel plates with a thickness of 3-5mm. The surface of the steel plates is hot-dip galvanized to form a zinc layer 80-100μm thick. The connection between the longitudinal beam 5 and the cross beam 3 is fixed by a full welding process, and the welding points are coated with epoxy anti-rust paint for secondary protection.

[0025] The functional principle of the present invention can be explained through the following operation mode: first, during the stage of box partitioning and component installation, the device forms independent installation space and wiring space by means of the fixed connection between the longitudinal beam 5 and the cross beam 3. The operator installs electronic components such as circuit breakers and terminal blocks in the two installation spaces respectively; and the wiring space is specifically used for combing and fixing wires, which structurally avoids cross interference between electronic components and wires, laying the foundation for subsequent operations.

[0026] During the wire classification and securing operation, after the wires are inserted through the threading holes 7 of the longitudinal beam 5, the operator places them into one of three staggered clamping assemblies within the threading space, according to their nature (main line, branch line, ground line). Each clamping assembly comprises two clamping plates 6. Turning a knob 13 rotates a threaded rod 12, causing two movable blocks 10 to move away from each other along the movable groove 9. This stretches the elastic fabric 11, and the curved groove 8 and movable blocks 10 cooperate to press the wires into the groove 8, achieving a secure fixation for wires of varying diameters. The damping bearing effectively reduces loosening of the threaded rod 12 during vibration, while the elastic fabric 11 cushions the stress generated by wire vibration, thereby preventing loosening of the joints due to prolonged wire movement.

[0027] Finally, in the sealing and protection guarantee link, when the door 2 is closed, the aging-resistant rubber sealing strip on the contact edge of the door 2 and the box body 1 fits tightly with the box body 1, forming a reliable sealing barrier, effectively preventing the invasion of rain and dust from the outside.

[0028] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-protection power distribution box, comprising a box body (1) and a box door (2), wherein the box body (1) and the box door (2) are rotatably connected by a hinge, and characterized in that: A longitudinal beam (5) is vertically fixedly connected in the box body (1), and a cross beam (3) is fixedly connected to the left side of the longitudinal beam (5) and the right inner wall of the box body (1). The cross beam (3) is provided with a plurality of strip holes (4), and the longitudinal beam (5) is provided with a plurality of threading holes (7). The longitudinal beam (5) and the cross beam (3) divide the box body (1) into two installation spaces and one threading space. Electronic components are installed in the installation space. Three groups of wire clamping assemblies are provided in the threading space. Each group of wire clamping assemblies includes two wire clamping plates (6), and each of the wire clamping plates (6) is provided with three arc grooves (8).

2. The high-protection power distribution junction box according to claim 1, characterized in that: The three groups of wire clamping components are arranged to be offset to the right.

3. The high-protection power distribution junction box according to claim 1, characterized in that: Each of the wire clamping plates (6) is provided with three wire fixing components, and the wire fixing components include a movable groove (9), the arc groove (8) passes through the movable groove (9), and the inner walls on both sides of the movable groove (9) are connected to a threaded rod (12) for rotation through a damping bearing, and two movable blocks (10) are threadedly connected to the threaded rod (12), and the two movable blocks (10) are slidably connected to the inner wall of the movable groove (9), and the left sides of the two movable blocks (10) are fixedly connected to an elastic cloth (11), and the front side of the threaded rod (12) extends to the outside and is fixedly connected to a knob (13).

4. The high-protection power distribution junction box according to claim 1, characterized in that: The left and right edges of each threading hole (7) are chamfered.

5. The high-protection power distribution junction box according to claim 1, characterized in that: A sealing strip is provided at the contact edge between the box door (2) and the box body (1); the sealing strip is made of aging-resistant rubber material and is bonded and fixed to the box door (2).

6. The high-protection power distribution junction box according to claim 1, characterized in that: The longitudinal beam (5) and the cross beam (3) are both integrally stamped from Q235B galvanized steel plates, the thickness of the steel plates being 3-5 mm, and the surfaces of the steel plates being hot-dip galvanized to form a zinc layer 80-100 μm thick. The connection between the longitudinal beam (5) and the cross beam (3) is fixed by a full welding process, and the welds are coated with epoxy anti-rust paint for secondary protection.

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