Shell structure of explosion-proof junction box

Abstract

The utility model relates to the technical field of junction boxes, in particular to an explosion-proof junction box shell structure, which comprises a junction box shell, an installation panel is fixedly connected to the top end of the junction box shell, four positioning columns are symmetrically and fixedly connected to the installation panel relative to the vertical central plane of the installation panel, and a box cover is arranged on the installation panel. According to the utility model, the butt joint column can be aligned and inserted with the limiting groove on the positioning column, so that the mounting position of the box cover can be positioned, and when the positioning sleeve and the positioning column are in sliding sleeving connection and the inclined surface of the inclined clamping block and the inclined surface of the inclined tooth block are in sliding contact, the connecting block and the inclined clamping block can be driven to slide in the positioning sleeve; when the box cover is attached to the surface of the mounting panel at the top of the junction box shell, the reset spring can drive the connecting block and the inclined clamping block to move, so that the inclined clamping block can be engaged and clamped with the inclined tooth block, the box cover can be fixedly mounted at the top of the junction box, the mounting speed of the box body and the box cover can be increased, and no threaded connecting piece is used.

Description

Technical Field

[0001] The utility model relates to the technical field of junction boxes, in particular to an explosion-proof junction box shell structure. Background Art

[0002] The explosion-proof junction box is a specially designed electrical device, mainly used in explosive and flammable hazardous places, which can prevent internal electric sparks from causing explosions. Its main functions include flameproofing, protection and distribution of electrical energy. The explosion-proof junction box adopts explosion-proof technology, which can operate stably in the environment of explosive gas mixture, effectively isolate the explosive gas and prevent explosion accidents. At the same time, it can also effectively protect electrical components to prevent fires or personal accidents caused by overload, short circuit and other faults.

[0003] The ends of the threaded connectors of the existing explosion-proof junction box shells are mostly directly exposed to the outside world. After long-term use, the threaded connectors are prone to rust and damage, making it difficult to easily disassemble and separate the box body and the box cover. In addition, since the explosion-proof junction box shell has good sealing performance, it will lead to poor internal heat dissipation performance. If it runs at high load for a long time, a high temperature may be generated inside the junction box. If the heat dissipation is not good, it may affect the performance and life of the electrical components. Utility Model Content

[0004] The purpose of the utility model is to provide an explosion-proof junction box shell structure to solve the problem that the existing explosion-proof junction box shell proposed in the above background technology has threaded connector ends that are mostly directly exposed to the outside world. After long-term use, the threaded connectors are prone to rust and damage, making it difficult to easily disassemble and separate the box body and the box cover; in addition, since the explosion-proof junction box shell has good sealing performance, it will lead to poor internal heat dissipation performance. If it is operated at high load for a long time, a higher temperature may be generated inside the junction box. If the heat dissipation is poor, it may affect the performance and life of the electrical components.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A shell structure of an explosion-proof junction box comprises a junction box shell, a mounting panel is fixedly connected to the top of the junction box shell, four positioning columns are symmetrically fixedly connected to the mounting panel about its vertical center plane, a box cover is arranged on the mounting panel, an explosion-proof cover is fixedly connected to the center position of the box cover, a plurality of wiring sleeves are fixedly connected to the outer wall of the junction box shell at equal distances, four positioning sleeves are symmetrically fixedly connected to the box cover, the positioning sleeves are slidably sleeved with the positioning columns, a plurality of beveled tooth blocks are fixedly connected to the inner wall of the positioning columns at equal distances, a connecting block is slidably connected in the positioning sleeve, and an oblique clamping block meshing and clamping with the beveled tooth block is fixedly connected to the end of the connecting block.

[0007] Furthermore, heat conducting plates are fixedly connected to opposite side walls of the junction box housing, and a plurality of heat sinks are fixedly connected to the surface of the heat conducting plates at equal distances.

[0008] Furthermore, the four positioning posts are each provided with a limiting groove, and the inner side wall of the positioning sleeve is fixedly connected with a docking post which is slidably sleeved with the limiting groove.

[0009] Furthermore, one end of the connecting block is fixedly connected to one end of a linkage column, the other end of the linkage column is rotatably connected to a rotating rod, the end of the rotating rod is rotatably connected to a lifting plate, a toggle handle is fixedly connected to the center position of the lifting plate, the bottom end of the toggle handle is slidably connected to a limiting column, and the limiting column is fixedly connected to the upper surface of the box cover.

[0010] Furthermore, a sliding seat is fixedly connected to the opposite side walls of the connecting block, the sliding seat is slidably connected to the positioning sleeve, a return spring is fixedly connected to the side wall of the sliding seat, the end of the return spring is fixedly connected to a fixing plate, and the fixing plate is fixedly connected to the positioning sleeve.

[0011] Furthermore, a pull rod is fixedly connected between the two positioning sleeves, and an anti-slip sleeve is fixedly sleeved on the outside of the pull rod.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. By aligning the box cover and placing it on the installation panel, the docking column on the inner wall of the positioning sleeve can be aligned and plugged with the limiting groove on the positioning column, so that the installation position of the box cover can be positioned. When the positioning sleeve and the positioning column are slidably sleeved, the inclined surfaces of the oblique clamping block and the oblique tooth block slide and conflict with each other, which can drive the connecting block and the oblique clamping block to slide in the positioning sleeve. When the box cover and the surface of the installation panel on the top of the junction box shell are in contact, the reset spring will drive the connecting block and the oblique clamping block to move, so that the oblique clamping block can mesh and engage with the oblique tooth block. In this way, the box cover can be fixedly installed on the top of the junction box, thereby speeding up the installation speed of the box body and the box cover, and no threaded connectors are used.

[0014] 2. By turning the handle, the lifting plate can be driven to rise, so that the two ends of the lifting plate can drive the rotating rod to rotate, so that the end of the rotating rod can drive the linkage column to slide in the positioning sleeve, thereby driving the linkage column and the connecting block to move, so that the oblique clamping block and the oblique tooth block are separated, and then holding the pull rod to drive the box cover to lift up, so that the box cover and the junction box shell can be quickly disassembled and separated, so that the electrical components in the junction box can be replaced or repaired in time.

[0015] 3. The heat dissipated from the junction box can be conducted to the heat conducting plate by the heat conducting plate arranged on the side wall of the junction box shell. The heat dissipation area of ​​the heat conducting plate can be increased by the heat sink on the surface of the heat conducting plate, so that the temperature of the heat conducting plate can be quickly reduced. This can effectively dissipate heat and cool down the inside of the junction box, preventing the internal temperature of the junction box from being too high and affecting the performance and life of electrical components. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the junction box housing in the utility model;

[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of the positioning column in the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the box cover in the utility model;

[0020] Figure 5 It is a schematic diagram of the connecting structure of the linkage column in the utility model.

[0021] In the figure: 101, junction box shell; 102, installation panel; 103, wiring sleeve; 104, heat conducting plate; 105, heat sink; 106, positioning column; 107, limiting groove; 108, oblique tooth block; 201, box cover; 202, explosion-proof cover; 203, positioning sleeve; 204, docking column; 205, pull rod; 206, anti-slip sleeve; 207, limiting column; 208, lifting plate; 209, toggle handle; 210, rotating rod; 211, linkage column; 212, connecting block; 213, oblique clamping block; 214, sliding seat; 215, reset spring; 216, fixing plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Embodiment 1

[0024] See also Figures 1 to 5In an embodiment of the utility model, an explosion-proof junction box housing structure includes a junction box housing 101, a mounting panel 102 is fixedly connected to the top of the junction box housing 101, four positioning columns 106 are symmetrically fixedly connected to the mounting panel 102 about its vertical center plane, a box cover 201 is arranged on the mounting panel 102, an explosion-proof cover 202 is fixedly connected to the center position of the box cover 201, a plurality of wiring sleeves 103 are fixedly connected to the outer wall of the junction box housing 101 at equal distances, four positioning sleeves 203 are symmetrically fixedly connected to the box cover 201, the positioning sleeves 203 are slidably sleeved with the positioning columns 106, and a plurality of inclined sleeves 203 are fixedly connected to the inner wall of the positioning columns 106 at equal distances. The tooth block 108 and the positioning sleeve 203 are slidably connected with a connecting block 212, and the end of the connecting block 212 is fixedly connected with an oblique clamping block 213 meshing and clamping with the oblique tooth block 108; the four positioning columns 106 are all provided with limiting grooves 107, and the inner side wall of the positioning sleeve 203 is fixedly connected with a docking column 204 slidably sleeved with the limiting groove 107; the opposite side walls of the connecting block 212 are fixedly connected with a sliding seat 214, and the sliding seat 214 is slidably connected to the positioning sleeve 203, and the side wall of the sliding seat 214 is fixedly connected with a return spring 215, and the end of the return spring 215 is fixedly connected with a fixed plate 216, and the fixed plate 216 is fixedly connected to the positioning sleeve 203.

[0025] Specifically, by aligning the box cover 201 and placing it on the installation panel 102, the docking column 204 on the inner wall of the positioning sleeve 203 can be aligned and plugged with the limiting groove 107 on the positioning column 106, so that the installation position of the box cover 201 can be positioned. When the positioning sleeve 203 and the positioning column 106 are slidably sleeved, the inclined surfaces of the oblique clamping block 213 and the oblique tooth block 108 slide and conflict with each other, which can drive the connecting block 212 and the oblique clamping block 213 to slide in the positioning sleeve 203. When the box cover 201 and the surface of the installation panel 102 on the top of the junction box housing 101 are in contact with each other, the return spring 215 will drive the connecting block 212 and the oblique clamping block 213 to move, so that the oblique clamping block 213 can mesh and engage with the oblique tooth block 108, so that the box cover 201 can be fixedly installed on the top of the junction box, thereby speeding up the installation speed of the box body and the box cover 201, and no threaded connectors are used.

[0026] like Figure 5 As shown, in the present embodiment, one end of the connecting block 212 is fixedly connected to one end of the linkage column 211, the other end of the linkage column 211 is rotatably connected to the rotating rod 210, the end of the rotating rod 210 is rotatably connected to the lifting plate 208, a toggle handle 209 is fixedly connected at the center position of the lifting plate 208, the bottom end of the toggle handle 209 is slidably sleeved with the limiting column 207, the limiting column 207 is fixedly connected to the upper surface of the box cover 201; a pull rod 205 is fixedly connected between the two positioning sleeves 203, and an anti-slip sleeve 206 is fixedly sleeved on the outside of the pull rod 205.

[0027] In this embodiment, the lifting plate 208 can be driven to rise by toggling the handle 209, so that the two ends of the lifting plate 208 can drive the rotating rod 210 to rotate, so that the end of the rotating rod 210 can drive the linkage column 211 to slide in the positioning sleeve 203, thereby driving the linkage column 211 and the connecting block 212 to move, so that the oblique clamping block 213 and the oblique tooth block 108 are separated, and then the pull rod 205 is held to drive the box cover 201 to lift up, so that the box cover 201 and the junction box shell 101 can be quickly disassembled and separated, so that the electrical components in the junction box can be replaced or repaired in time.

[0028] Embodiment 2

[0029] like Figure 2 As shown, in this embodiment, heat conducting plates 104 are fixedly connected to opposite side walls of the junction box housing 101 , and a plurality of heat sinks 105 are fixedly connected to the surface of the heat conducting plates 104 at equal distances.

[0030] In a specific implementation, the heat emitted from the junction box can be conducted to the heat conducting plate 104 through the heat conducting plate 104 arranged on the side wall of the junction box shell 101, and the heat dissipation area of ​​the heat conducting plate 104 can be increased by the heat sink 105 on the surface of the heat conducting plate 104, so that the temperature of the heat conducting plate 104 can be quickly reduced, which can effectively dissipate heat and cool down the inside of the junction box, preventing the internal temperature of the junction box from being too high and affecting the performance and life of electrical components.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0032] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An explosion-proof junction box housing structure, characterized in that: The invention comprises a junction box housing (101), a mounting panel (102) being fixedly connected to the top of the junction box housing (101), four positioning columns (106) being fixedly connected to the mounting panel (102) symmetrically about its vertical center plane, a box cover (201) being arranged on the mounting panel (102), an explosion-proof cover (202) being fixedly connected at the center of the box cover (201), and a plurality of junction boxes (206) being fixedly connected to the outer wall of the junction box housing (101) at equal distances. The box cover (201) is symmetrically and fixedly connected with four positioning sleeves (203), the positioning sleeves (203) are slidably sleeved with the positioning column (106), a plurality of bevel gear blocks (108) are equidistantly and fixedly connected to the inner wall of the positioning column (106), a connecting block (212) is slidably connected in the positioning sleeve (203), and an end of the connecting block (212) is fixedly connected with an bevel clamping block (213) meshing and clamping with the bevel gear block (108).

2. The explosion-proof junction box housing structure according to claim 1, characterized in that: Heat conducting plates (104) are fixedly connected to opposite side walls of the junction box housing (101), and a plurality of heat sinks (105) are fixedly connected to the surface of the heat conducting plates (104) at equal distances.

3. The explosion-proof junction box housing structure according to claim 1, characterized in that: The four positioning posts (106) are each provided with a limiting groove (107), and the inner side wall of the positioning sleeve (203) is fixedly connected with a docking post (204) which is slidably sleeved with the limiting groove (107).

4. The explosion-proof junction box housing structure according to claim 1, characterized in that: One end of the connecting block (212) is fixedly connected to one end of a linkage column (211); the other end of the linkage column (211) is rotatably connected to a rotating rod (210); the end of the rotating rod (210) is rotatably connected to a lifting plate (208); a toggle handle (209) is fixedly connected at the center of the lifting plate (208); the bottom end of the toggle handle (209) is slidably sleeved with a limiting column (207); and the limiting column (207) is fixedly connected to the upper surface of the box cover (201).

5. The explosion-proof junction box housing structure according to claim 1, characterized in that: The connecting block (212) is fixedly connected to a sliding seat (214) on its opposite side walls, the sliding seat (214) is slidably connected to the positioning sleeve (203), the sliding seat (214) is fixedly connected to the side wall of the sliding seat (214), the end of the reset spring (215) is fixedly connected to a fixing plate (216), and the fixing plate (216) is fixedly connected to the positioning sleeve (203).

6. The explosion-proof junction box housing structure according to claim 1, characterized in that: A pull rod (205) is fixedly connected between the two positioning sleeves (203), and an anti-slip sleeve (206) is fixedly sleeved on the outside of the pull rod (205).

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