Explosion-proof junction box capable of protecting incoming line and outgoing line

Abstract

The utility model discloses an explosion-proof junction box with incoming and outgoing line protection, which comprises an upper box body and a label plate, the upper box body and the label plate are connected and fixed through a connecting piece, the side surfaces of the upper box body and the label plate are respectively provided with a semicircular line hole, and when the upper box body and the label plate are closed, the two semicircular line holes are matched to form a circular line hole. According to the utility model, through the arrangement of the line protection structure, a line passing through the circular line hole can be protected, as the arc seats are arranged in pairs, the line can be easily installed when the upper box body and the label plate are separated, and when the upper box body and the label plate are closed, the two outer arc sheets are closed, so that the two inner arc sheets are inserted into the arc-shaped supporting sheets, and the line can be conveniently installed. By screwing the outer arc piece, the inner arc piece moves along the inner side of the arc supporting piece, the arc sliding block is gradually pushed, in the pushing process of the arc sliding block, the arc elastic wrinkle piece is gradually compressed, wrinkles are extruded inwards, and therefore the sealing performance of line installation is improved; dust is prevented from entering, and explosion caused by dust accumulation is avoided.

Description

Technical Field

[0001] This utility model relates to the field of junction box technology, and in particular to an explosion-proof junction box for protecting incoming and outgoing lines. Background Technology

[0002] In the field of industrial explosion protection, explosion-proof junction boxes, which protect incoming and outgoing lines, are key components for ensuring the safe operation of electrical equipment. Especially in flammable and explosive environments, such as oil, chemical, and coal mines, any electrical fault can trigger a serious explosion. Therefore, the design of explosion-proof junction boxes must strictly adhere to explosion-proof standards, ensuring excellent sealing, dustproof, and explosion-proof performance.

[0003] Traditional explosion-proof junction boxes often use simple wire holes or sealing rings for protection when the wires enter and exit. While these designs can prevent the leakage of sparks and high-temperature gases to some extent, over long-term use, frequent plugging and unplugging of wires and the influence of the external environment can easily lead to a decline in sealing performance, allowing dust and moisture to enter and increasing the risk of explosion. In addition, traditional designs are also more cumbersome to adjust and maintain, requiring disassembly of the entire junction box or the use of special tools, reducing work efficiency.

[0004] A search revealed Chinese patent application CN202410341070.7, which discloses a junction box for industrial control. The box includes a housing with wiring holes on its outer surface. A wiring fixing mechanism is mounted on the surface of the wiring holes. This mechanism includes a fixing box, a fixing ring, an extension bracket, and a diagonal rod. The fixing ring is located on the inner wall of the fixing box. The diagonal rod is rotatably mounted on the upper surface of the extension bracket, and an internal release mechanism is provided on one side of the diagonal rod. The junction box in the aforementioned document has the following shortcomings: the wiring fixing mechanism has poor sealing performance and is a closed-loop structure, making wiring installation and adjustment inconvenient. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an explosion-proof junction box for protecting incoming and outgoing lines.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An explosion-proof junction box for protecting incoming and outgoing lines includes: an upper box and a lower box, the upper box and the lower box being connected and fixed by a connector, and semi-circular wire holes being provided on the sides of both the upper box and the lower box. When the upper box and the lower box are closed, the two semi-circular wire holes cooperate to form a circular wire hole.

[0008] The upper and lower housings are provided with wiring protection structures on their sides, and the wiring protection structures include:

[0009] Arc seats are set in pairs on the outside of the semi-circular wire holes of the upper and lower housings. An arc-shaped support plate is fixed at the end of the arc seat away from the upper housing, and the arc-shaped support plate is threaded. The threads of the two arc-shaped support plates are matched. When the upper and lower housings are closed, the two arc seats of each pair cooperate to form a closed loop structure, and the threads of the arc-shaped support plates cooperate to form a complete continuous thread.

[0010] An arc-shaped elastic corrugated sheet, one end of which is fixed to the outer wall of one side of the arc seat, and V-shaped corrugations are provided on the arc-shaped elastic corrugated sheet;

[0011] The arc-shaped slider slides inside the arc-shaped support plate and is fixed to one end of the arc-shaped elastic corrugated plate. When the upper and lower boxes are closed, the fold positions of the two arc-shaped elastic corrugated plates are matched, and the two arc-shaped sliders form a closed loop structure.

[0012] The clamping component is detachably mounted on the arc-shaped support plate and is used to press the arc-shaped slider against the arc seat.

[0013] The clamping element includes:

[0014] The inner arc plate has an arc-shaped structure that matches the inner side of the arc-shaped support plate.

[0015] The outer arc plate has an arc-shaped structure that matches the outer side of the arc-shaped support plate. One side of the outer arc plate is connected to the inner arc plate through a connecting plate. The outer arc plate and the connecting plate are provided with threads that match the arc-shaped support plate on the side near the inner arc plate. When the two outer arc plates are closed, they cooperate to form a ring structure.

[0016] As a further improvement of this utility model: a side bracket is fixed to the side of the outer arc plate, and the side brackets of the two outer arc plates are connected and fixed by screws;

[0017] One of the arc-shaped sliders has connecting posts at both ends, and the other arc-shaped slider has insertion holes at both ends. When the two arc-shaped sliders are closed, the connecting posts are inserted into the insertion holes.

[0018] As a further improvement of this utility model: the arc seat is provided with a slot, and an elastic sleeve is detachably installed on the outer side of the arc-shaped support piece. The bottom of the elastic sleeve is provided with a strip-shaped opening. The elastic sleeve is a non-closed-loop structure. One end of the elastic sleeve is provided with a retaining strip. The elastic sleeve is detachably installed in the slot of the arc seat through the retaining strip.

[0019] As a further embodiment of this utility model: the connecting member includes a connecting plate, which is fixed to the lower housing. A connecting frame is fixed to the side of the upper housing. When the upper housing is installed on the lower housing, the connecting plate is fixed to the connecting frame by fixing screws.

[0020] As a further improvement of this utility model: an elastic baffle is fixed on the outer side of the top of the lower box, and when the upper box is installed on the lower box, the elastic baffle is located on the outer side of the connection between the upper box and the lower box.

[0021] As a further improvement of this utility model: a mounting plate is fixed to the bottom of the lower box, and an oblong hole is provided on the mounting plate.

[0022] As a further improvement of this utility model: a plurality of mounting grooves are provided on one side of the outer wall of the upper box, the mounting grooves are located above the wire holes, and a label plate is detachably installed in the mounting grooves.

[0023] The beneficial effects of this utility model are as follows:

[0024] 1. This utility model, by setting up a circuit protection structure, can protect the circuit passing through the circular wire hole. Since the arc seats are set in pairs, the circuit can be easily installed when the upper and lower boxes are separated. When the upper and lower boxes are closed, the two outer arc plates are closed, allowing the two inner arc plates to be inserted into the arc-shaped support plate. By twisting the outer arc plates, the inner arc plates move along the inner side of the arc-shaped support plate, gradually pushing the arc-shaped slider. During the process of the arc-shaped slider being pushed, the arc-shaped elastic corrugated plate is gradually compressed, and the folds are squeezed inward, thereby improving the sealing of the circuit installation; preventing dust from entering and avoiding dust accumulation that could cause an explosion.

[0025] 2. Because the circuit protection structure of this utility model is not an integrated closed-loop structure, it can better adjust the circuit and can be disassembled and assembled without the end of the circuit passing through, making it easier to operate.

[0026] 3. By setting an elastic rubber sleeve, this utility model can insert the clip of the elastic rubber sleeve into the slot after installing structures such as inner arc plates, and use the elastic rubber sleeve to wrap the structure.

[0027] 4. By setting up a label plate, this utility model can easily identify each line, thus improving its practicality. Attached Figure Description

[0028] Figure 1 This is a structural schematic diagram of an explosion-proof junction box for protecting incoming and outgoing lines, as proposed in this utility model.

[0029] Figure 2 This is a schematic diagram of the structure of an explosion-proof junction box for protecting incoming and outgoing lines, with separate upper and lower boxes.

[0030] Figure 3 This is a schematic diagram of the structure of an explosion-proof junction box for inlet and outlet line protection proposed in this utility model, showing the separation of two arc-shaped support plates.

[0031] Figure 4This is a schematic diagram of the structure of an explosion-proof junction box for inlet and outlet line protection, where the outer arc plate, inner arc plate, and arc-shaped slider are separated.

[0032] In the diagram: 1-Upper housing, 2-Label plate, 3-Mounting groove, 4-Elastic rubber sleeve, 5-Lower housing, 6-Mounting plate, 7-Connecting plate, 8-Connecting bracket, 9-Fixing screw, 10-Outer arc plate, 11-Inner arc plate, 12-Clamping strip, 13-Arc-shaped elastic corrugated plate, 14-Clamping groove, 15-Arc-shaped support plate, 16-Connecting column, 17-Arc-shaped slider, 18-Side bracket, 19-Connecting plate, 20-Elastic baffle, 21-Arc seat. Detailed Implementation

[0033] The technical solution of this utility model will be further described in detail below with reference to specific embodiments.

[0034] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0035] Example 1

[0036] An explosion-proof junction box with protection for incoming and outgoing lines, such as Figure 1-4 As shown, it includes: an upper box 1 and a lower box 5. The upper box 1 and the lower box 5 are connected and fixed by a connector. The upper box 1 and the lower box 5 are each provided with a semi-circular wire hole on their side. When the upper box 1 and the lower box 5 are closed, the two semi-circular wire holes cooperate to form a circular wire hole.

[0037] The upper housing 1 and the lower housing 5 are provided with a line protection structure on their sides, the line protection structure including:

[0038] Arc seat 21, arc seat 21 is set in pairs on the outside of the semi-circular wire hole of the upper box 1 and the lower box 5. An arc-shaped support plate 15 is fixed at the end of the arc seat 21 away from the upper box 1, and the arc-shaped support plate 15 is provided with threads. The threads of the two arc-shaped support plates 15 are matched. When the upper box 1 and the lower box 5 are closed, the two arc seats 21 of each pair cooperate to form a closed loop structure, and the threads of the arc-shaped support plates 15 cooperate to form a complete continuous thread.

[0039] An arc-shaped elastic corrugated piece 13 is fixed at one end to the outer wall of one side of the arc seat 21, and V-shaped corrugations are provided on the arc-shaped elastic corrugated piece 13.

[0040] Arc-shaped slider 17 slides on the inner side of arc-shaped support plate 15 and is fixed to one end of arc-shaped elastic corrugated plate 13. When the upper box 1 and the lower box 5 are closed, the corrugated positions of the two arc-shaped elastic corrugated plates 13 are matched, and the two arc-shaped sliders 17 form a closed loop structure.

[0041] A clamping component is detachably mounted on the arc-shaped support plate 15 and is used to press the arc-shaped slider 17 against the arc seat 21.

[0042] The clamping element includes:

[0043] The inner arc plate 11 has an arc-shaped structure that matches the inner side of the arc-shaped support plate 15;

[0044] The outer arc plate 10 has an arc-shaped structure that matches the outer side of the arc-shaped support plate 15. One side of the outer arc plate 10 is connected to the inner arc plate 11 through the connecting plate 19. The outer arc plate 10 and the connecting plate 19 are provided with threads that match the arc-shaped support plate 15 on the side near the inner arc plate 11. When the two outer arc plates 10 are closed, the two outer arc plates 10 cooperate to form a ring structure.

[0045] By setting up a circuit protection structure, the circuit passing through the circular wire hole can be protected. Since the arc seat 21 is set in pairs, the circuit can be easily installed when the upper box 1 and the lower box 5 are separated. When the upper box 1 and the lower box 5 are closed, the two outer arc pieces 10 are closed, so that the two inner arc pieces 11 are inserted into the arc-shaped support piece 15. By twisting the outer arc pieces 10, the inner arc pieces 11 move along the inner side of the arc-shaped support piece 15, gradually pushing the arc-shaped slider 17. During the process of the arc-shaped slider 17 being pushed, the arc-shaped elastic corrugated piece 13 is gradually compressed, and the folds are squeezed inward, thereby improving the sealing of the circuit installation; preventing dust from entering and avoiding dust accumulation that may cause an explosion.

[0046] Because the line protection structure is not a one-piece closed-loop structure, it allows for better line adjustment. It can be disassembled and assembled without the end of the line passing through, making it easier to operate.

[0047] To improve structural strength; such as Figure 4 As shown, a side bracket 18 is fixed to the side of the outer arc plate 10, and the side brackets 18 of the two outer arc plates 10 are connected and fixed by screws.

[0048] One of the arc-shaped sliders 17 has connecting posts 16 at both ends, and the other arc-shaped slider 17 has insertion holes at both ends. When the two arc-shaped sliders 17 are closed, the connecting posts 16 are inserted into the insertion holes.

[0049] By setting up structures such as side brackets 18 and connecting columns 16, the stability of the structure after installation can be improved.

[0050] To further improve the sealing effect; such as Figure 3 As shown, the arc seat 21 is provided with a slot 14, and an elastic sleeve 4 is detachably installed on the outer side of the arc support piece 15. The bottom of the elastic sleeve 4 is provided with a strip-shaped opening. The elastic sleeve 4 is a non-closed-loop structure. One end of the elastic sleeve 4 is provided with a retaining strip 12. The elastic sleeve 4 is detachably installed in the slot 14 of the arc seat 21 through the retaining strip 12, and covers the arc support piece 15, the outer arc piece 10 and other structures.

[0051] By setting the elastic sleeve 4, after installing structures such as the inner arc plate 11, the retaining strip 12 of the elastic sleeve 4 can be inserted into the retaining groove 14, and the structure can be wrapped by the elastic sleeve 4.

[0052] For ease of connection and fixation; such as Figure 1 , Figure 2 As shown, the connector includes a connecting plate 7, which is fixed to the lower housing 5. A connecting frame 8 is fixed to the side of the upper housing 1. When the upper housing 1 is installed on the lower housing 5, the connecting plate 7 is fixed to the connecting frame 8 by a fixing screw 9.

[0053] To improve sealing; such as Figure 1 , Figure 2 As shown, an elastic baffle 20 is fixed on the outer side of the top of the lower box 5. When the upper box 1 is installed on the lower box 5, the elastic baffle 20 is located on the outer side of the connection between the upper box 1 and the lower box 5.

[0054] By setting the elastic baffle 20, a certain degree of shielding effect is achieved.

[0055] Preferably, the upper housing 1 and the lower housing 5 are made of high-strength aluminum alloy and other materials to enhance corrosion resistance.

[0056] For ease of installation; such as Figure 1 As shown, a mounting plate 6 is fixed to the bottom of the lower housing 5, and the mounting plate 6 is provided with a waist-shaped hole.

[0057] Example 2

[0058] For ease of use, please refer to Figure 1 An explosion-proof junction box for protecting incoming and outgoing lines. In this embodiment, based on embodiment 1, a plurality of mounting grooves 3 are provided on one side of the outer wall of the upper box 1. The mounting grooves 3 are located above the wire holes, and the lower box 5 is detachably installed in the mounting grooves 3.

[0059] By setting up the lower enclosure 5, it is easy to label each line, thus improving practicality.

[0060] For the parts of this utility model not disclosed in detail, those skilled in the art can ensure the smooth implementation of the solution of this utility model based on common sense, normal thinking logic and existing technology.

[0061] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An explosion-proof junction box for protecting incoming and outgoing lines, characterized in that, include: The upper box (1) and the lower box (5) are connected and fixed by a connector. The upper box (1) and the lower box (5) are provided with semi-circular wire holes on their sides. When the upper box (1) and the lower box (5) are closed, the two semi-circular wire holes cooperate to form a circular wire hole. The upper housing (1) and the lower housing (5) are provided with line protection structures on their sides, the line protection structures including: Arc seat (21) is set in pairs on the outside of the semi-circular wire hole of the upper box (1) and the lower box (5). An arc support plate (15) is fixed at the end of the arc seat (21) away from the upper box (1), and the arc support plate (15) is provided with a thread. The threads of the two arc support plates (15) are matched. When the upper box (1) and the lower box (5) are closed, the two arc seats (21) of each pair cooperate to form a closed loop structure, and the threads of the arc support plates (15) cooperate to form a complete continuous thread. Arc-shaped elastic pleated piece (13), one end of which is fixed to the outer wall of one side of the arc seat (21), and V-shaped pleats are provided on the arc-shaped elastic pleated piece (13); Arc-shaped slider (17) slides on the inner side of arc-shaped support plate (15) and is fixed to one end of arc-shaped elastic pleated plate (13). When the upper box (1) and lower box (5) are closed, the pleated positions of the two arc-shaped elastic pleated plates (13) are matched, and the two arc-shaped sliders (17) form a closed loop structure. The clamping component is detachably mounted on the arc-shaped support plate (15) and is used to press the arc-shaped slider (17) against the arc seat (21); The clamping element includes: The inner arc plate (11) has an arc-shaped structure that is adapted to the inner side of the arc-shaped support plate (15); The outer arc plate (10) has an arc-shaped structure that matches the outer side of the arc support plate (15). One side of the outer arc plate (10) is connected to the inner arc plate (11) through the connecting plate (19). The outer arc plate (10) and the connecting plate (19) are provided with threads that match the arc support plate (15) on the side of the outer arc plate (10) and the connecting plate (19) near the inner arc plate (11). When the two outer arc plates (10) are closed, the two outer arc plates (10) cooperate to form a ring structure.

2. The explosion-proof junction box for protecting incoming and outgoing lines according to claim 1, characterized in that, The outer arc plate (10) is fixed with a side bracket (18), and the side brackets (18) of the two outer arc plates (10) are connected and fixed by screws; One of the arc-shaped sliders (17) has connecting posts (16) at both ends, and the other arc-shaped slider (17) has insertion holes at both ends. When the two arc-shaped sliders (17) are closed, the connecting posts (16) are inserted into the insertion holes.

3. The explosion-proof junction box for incoming and outgoing line protection according to claim 2, characterized in that, The arc seat (21) is provided with a slot (14), and an elastic sleeve (4) is detachably installed on the outside of the arc support piece (15). The bottom of the elastic sleeve (4) is provided with a strip-shaped opening. The elastic sleeve (4) is a non-closed-loop structure. One end of the elastic sleeve (4) is provided with a locking strip (12). The elastic sleeve (4) is detachably installed in the slot (14) of the arc seat (21) through the locking strip (12).

4. The explosion-proof junction box for protecting incoming and outgoing lines according to claim 1, characterized in that, The connector includes a connecting plate (7), which is fixed on the lower housing (5). A connecting frame (8) is fixed on the side of the upper housing (1). When the upper housing (1) is installed on the lower housing (5), the connecting plate (7) is fixed on the connecting frame (8) by a fixing screw (9).

5. The explosion-proof junction box for incoming and outgoing line protection according to claim 1, characterized in that, An elastic baffle (20) is fixed on the outer side of the top of the lower box (5). When the upper box (1) is installed on the lower box (5), the elastic baffle (20) is located on the outer side of the connection between the upper box (1) and the lower box (5).

6. The explosion-proof junction box for protecting incoming and outgoing lines according to claim 1, characterized in that, The bottom of the lower housing (5) is fixed with an installation plate (6), and the installation plate (6) is provided with a waist-shaped hole.

7. An explosion-proof junction box for protecting incoming and outgoing lines according to any one of claims 1-6, characterized in that, The upper housing (1) has multiple mounting slots (3) on one side of its outer wall. The mounting slots (3) are located above the wire holes, and the lower housing (5) is detachably installed in the mounting slots (3).

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