Explosion-proof power supply maintenance socket box
By designing a reasonable internal structure of explosion-proof socket and plug in the explosion-proof power supply maintenance socket box, the coordination of the seat body, conductive column and contact sheet is used to solve the problem of low safety factor in the prior art, achieving higher safety and lower assembly costs.
Patent Information
- Application Number
- CN202421243536.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-03
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-06-03
AI Technical Summary
In the existing explosion-proof maintenance power socket box, the internal structure of the explosion-proof socket and plug is unreasonable, resulting in a low safety factor and a safety hazard.
An explosion-proof power supply maintenance socket box is designed. The internal structure of the explosion-proof socket and the plug is coordinated by a fixed first seat and a rotatable second seat. The structure of the conductive column and the contact piece is used to achieve conduction while reducing the phenomenon of direct plug-in and conduction, and the safety is improved through structures such as seals and limit rings.
It effectively improves the safety of explosion-proof plugs and sockets, reduces the risk of direct plugging and conduction, reduces assembly costs, and simplifies the repair and replacement process. The overall structure is designed reasonably and safer to use.
Smart Images
Figure 00000000_0000_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of explosion-proof power supply maintenance socket boxes, in particular to an explosion-proof power supply maintenance socket box. Background Art
[0002] Explosion-proof maintenance power outlet boxes are equipped with an auxiliary power supply input device for easy access to the power supply for maintenance. They can also be equipped with a main switch and provide overload and short-circuit protection. The housing is die-cast aluminum alloy or welded steel, and the surface is sprayed with high-voltage electrostatic plastic. The explosion-proof sockets and plugs currently used in explosion-proof maintenance power outlet boxes have unreasonable internal structures, resulting in a low safety factor. They are not suitable for use in flammable and explosive hazardous locations, posing certain safety risks. Utility Model Content
[0003] In view of the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide an explosion-proof power supply maintenance socket box which has a reasonable structure and is safer to use.
[0004] The utility model solves its technical problem by adopting a technical solution of an explosion-proof power maintenance socket box, comprising an explosion-proof power supply housing, wherein a power wiring device is installed in the explosion-proof power supply housing, wherein a first power supply introduction device and a second power supply introduction device are respectively provided at the lower end and the front end of the explosion-proof power supply housing for matching with the power wiring device, wherein the second power supply introduction device comprises an explosion-proof socket and an explosion-proof plug, wherein a fixed first base body and a second base body that can be rotated to a locked position are provided inside the explosion-proof socket, wherein a plurality of first conductive posts are integrally provided on the first base body, wherein the other ends of the first conductive posts are each connected to a first contact piece, wherein the first contact pieces are uniformly distributed circumferentially on the inner sides of corresponding ends of the first base body, wherein the second base body is provided with corresponding second contact pieces and first connecting sockets corresponding to the second contact pieces, wherein a fixed third base body is provided inside the explosion-proof plug, wherein the third base body is integrally provided with corresponding second conductive posts, wherein the second conductive posts are matched with the corresponding first connecting sockets and are electrically connected with the corresponding second contact pieces, and when the second conductive posts drive the second base body to rotate to the locked position, the second contact pieces are brought into contact and electrically connected with the corresponding first contact pieces.
[0005] The advantages of adopting the above technical solution are as follows: the conduction of the internal circuit of the explosion-proof plug and the explosion-proof socket is achieved by the third base body driving the second base body to rotate to the locked position, so that the second contact piece on the second base body is in contact and conductive with the first contact piece on the first base body, thereby effectively reducing the phenomenon of the explosion-proof plug being conductive when directly plugged in, and the operation process is safer. In addition, the first base body and the first conductive column, as well as the third base body and the second conductive column are all configured as an integrated structure, realizing an effective combination of parts, reducing assembly costs, and ensuring the safety of electrical conduction, further reducing safety hazards. At the same time, the coordination of the first base body, the second base body, and the third base body is also convenient for maintenance and replacement, the overall structural design is reasonable, and it is safer to use.
[0006] Furthermore, a second connecting hole is provided at a central position on the inner side of the second seat body relative to the second contact piece, a mounting shaft is provided at the second connecting hole, a spring seat is provided on the mounting shaft, and a first spring is connected between the spring seat and the corresponding second contact piece.
[0007] Advantages of the above technical solution: by arranging a spring seat at a central position, a first spring on the spring seat provides a stronger force for the second contact piece, so that the second contact piece can be in contact with the first contact piece more stably, ensuring the stability of electrical conduction and a reasonable structural design.
[0008] Furthermore, the second contact piece is provided with a conductive pin that cooperates with the first contact piece, the rod of the conductive pin is provided for the first spring to be sleeved, and a receiving hole is provided at the corresponding position of the spring seat, and the other end of the first spring is located in the receiving hole.
[0009] Advantages of the above technical solution: the second contact piece uses a conductive pin to contact the first contact piece, which has better conductivity. At the same time, the conductive pin and the receiving hole also provide stable support for the first spring, making the effect provided by the first spring stronger.
[0010] Furthermore, the spring seat is axially movable and cooperates with the installation shaft. The first seat body is provided at a central position relative to the inner side of the first contact piece. A connecting sleeve is provided in the third connecting hole, and the other end of the installation shaft cooperates with the connecting sleeve.
[0011] The advantages of adopting the above technical solution are as follows: when the second contact piece rotates to form a match with the first contact piece, a force is generated, and the force applied to the first spring is converted into axial movement of the spring seat. The first spring is not easy to reduce its use effect during long-term use, and the service life of the first spring will be longer. By providing a third connecting jack and a connecting sleeve for use on the first seat body, the installation effect of the mounting shaft is improved, and the effective use of the spring seat is guaranteed. Therefore, the contact effect between the first contact piece and the second contact piece will be better and the matching life will be longer.
[0012] Furthermore, the explosion-proof socket forms a first annular groove at the bottom end of the first seat body, and a first sealing member is provided in the first annular groove. The explosion-proof plug forms a second annular groove at the bottom end of the third seat body, and a second sealing member is provided in the second annular groove.
[0013] The advantages of adopting the above technical solution are as follows: the first sealing member and the second sealing member are provided to increase the sealing effect inside the explosion-proof socket and the explosion-proof plug, making the coordinated use of the explosion-proof socket and the explosion-proof plug safer.
[0014] Furthermore, a limiting ring platform that cooperates with the locking position is formed on the outer periphery of the explosion-proof plug, the bottom of the limiting ring platform forms a limiting fit with the upper end surface of the explosion-proof socket and is provided with a third ring groove, a third sealing member is provided in the third ring groove, and a fourth sealing member is provided between the outer peripheral wall of the explosion-proof socket and the matching position of the explosion-proof power supply box.
[0015] The advantages of adopting the above technical solution are: the limiting ring is used to limit the insertion depth of the explosion-proof plug. Therefore, when the limiting ring forms a limiting fit with the upper end of the explosion-proof socket, rotating the explosion-proof plug can cause the second conductive column on the internal third seat body to drive the second seat body to rotate to a locked position. The structure is simple and the design is reasonable. In addition, by arranging a third seal at the fitting position of the explosion-proof plug and the explosion-proof socket, and arranging a fourth seal at the fitting position of the explosion-proof socket and the explosion-proof power supply box, the use of the explosion-proof socket and the explosion-proof plug is safer.
[0016] Furthermore, a protective cover is connected to the outer peripheral wall of the explosion-proof socket via a pin with a second spring, and the protective cover is matched with the front end of the explosion-proof socket.
[0017] The advantages of adopting the above technical solution are: the protective cover can cover the front end of the explosion-proof socket, thereby preventing liquid from flowing into the interior when the explosion-proof socket is not matched with the explosion-proof plug, thereby ensuring safety in use.
[0018] Furthermore, the explosion-proof power supply box is composed of a power supply box main shell and a power supply box cover shell. The power supply box cover shell is fixedly connected to the front end of the power supply box main shell by bolts. Protrusions are formed on the end walls on both sides of the power box main shell. A fourth annular groove is provided at the corresponding position of the power supply box cover shell. A fifth sealing member is provided in the fourth annular groove, and the protrusion is tightly fitted with the fifth sealing member.
[0019] The advantages of adopting the above technical solution are: the main shell of the power box and the cover shell of the power box are open structures before being closed, which is convenient for setting components such as the power wiring device, the first power introduction device and the second power introduction device on the main shell and the cover shell of the power box. When the main shell of the power box and the cover shell of the power box are fixed, the protrusion will press the fifth seal tightly against the fourth ring groove, thereby forming effective protection for the main shell of the power box and the cover shell of the power box, thereby avoiding leakage inside the main shell of the power box and ensuring the explosion-proof effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0021] Figure 2 This is a cross-sectional view of the overall structure of the utility model;
[0022] Figure 3 for Figure 2 A magnified view of the structure at point A;
[0023] Figure 4 for Figure 2 A magnified view of the structure at point B in FIG;
[0024] Figure 5 for Figure 2 Enlarged view of the structure at point C in .
[0025] In the figure: 1- explosion-proof power supply box, 2- power wiring device, 3- first power introduction device, 4- second power introduction device, 5- explosion-proof socket, 6- explosion-proof plug, 7- first seat, 8- second seat, 9- first conductive column, 10- first contact piece, 11- second contact piece, 12- third seat, 13- second conductive column, 14- mounting shaft, 15- spring seat, 16- first spring, 17- conductive pin, 18- connecting sleeve, 19- first seal, 20- second seal, 21- limiting ring, 22- third seal, 23- fourth seal, 24- protective cover, 25- power box main shell, 26- power box cover shell, 27- protrusion, 28- fifth seal, 29- explosion-proof control box, 30- control box main shell, 31- control box cover shell, 32- power control device, 33- control switch, 34- sixth seal. DETAILED DESCRIPTION
[0026] To more clearly illustrate the embodiments of the present invention and / or the technical solutions in the prior art, the following describes specific embodiments of the present invention with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of the present invention. A person skilled in the art can, without inventive effort, derive other drawings and other embodiments from these drawings. References to orientations only represent relative positional relationships between components, not absolute positional relationships.
[0027] See also Figures 1 to 5 As shown, an explosion-proof power maintenance socket box includes an explosion-proof power box body 1, a power wiring device 2 is installed in the explosion-proof power box body 1, the power wiring device 2 includes a guide rail installed in the explosion-proof power box body 1 through a fixing part, and a wiring terminal installed on the guide rail, a first power introduction device 3 and a second power introduction device 4 are respectively provided at the lower end and the front end of the explosion-proof power box body 1 to match the power wiring device 2, the first power introduction device 3 is for sealing the external cable to be introduced into the power wiring device 2 in the explosion-proof power box body 1, the second power introduction device 4 includes an explosion-proof socket 5 and an explosion-proof plug 6, the interior of the explosion-proof socket 5 is provided with a fixed first seat body 7 and a second seat body 8 which can be rotated to a locked position, the second seat body 8 can be installed on the explosion-proof socket 5 (unlocked) through a corresponding guide structure, a plurality of first conductive columns 9 are integrally provided on the first seat body 7, one end of the first conductive column 9 is connected to the power wiring device 2 through a wire, and the other end of the first conductive column 9 is connected to a first contact piece 10. It should be noted that the first conductive column There are four pillars 9, so there are also four first contact pieces 10. The four first contact pieces 10 are evenly distributed on the inner side of the corresponding ends of the first base body 7 in a circumferential manner, that is, the four first contact pieces 10 are arranged at 90° intervals. The second base body 8 is provided with corresponding second contact pieces 11 and first connecting holes corresponding to the second contact pieces 11. That is, there are also four second contact pieces 11 and they are evenly distributed on the second base body 8 in a circumferential manner. There are also four first connecting holes for the other end of the second contact piece 11 to cooperate with. A fixed third base body 12 is provided in the explosion-proof plug 6. The third base body 12 is integrally provided with corresponding second conductive pillars 13. The second conductive pillars 13 are connected to the external power switch through wires, and there are also four second conductive pillars 13. The four second conductive pillars 13 are matched in the corresponding connecting holes 12 and are conductive with the corresponding second contact pieces 11. When the second base body 8 is driven to rotate to the locked position by the second conductive pillars 13, the second contact pieces 11 and the corresponding first contact pieces 10 are brought into contact and conductive cooperation.
[0028] In the above structure, the conduction of the internal circuit of the explosion-proof plug 6 and the explosion-proof socket 5 is achieved by the third seat body 12 driving the second seat body 8 to rotate to the locked position. More specifically, the explosion-proof plug 6 is inserted into place so that the second conductive post 13 on the third seat body 12 is inserted into the corresponding first connecting jack, and then the explosion-proof plug 6 is rotated to make the third seat body 12 rotate synchronously, and the second conductive post 13 on the third seat body 12 can drive the second seat body 8 to rotate. When the locking protrusion of the explosion-proof plug 6 is rotated to form a locking fit with the locking groove on the inner wall of the explosion-proof socket 5, the second seat body 8 is rotated into place, so that the second conductive post 13 on the second seat body 8 The contact piece 11 is in contact and conductive with the first contact piece 10 on the first base body 7. Such a conductive mode is set up, which can effectively reduce the phenomenon of the explosion-proof plug 6 being conductive when it is directly plugged in, and the operation process is safer. The first base body 7 and the first conductive column 9, as well as the third base body 12 and the second conductive column 13 are all set as an integrated structure, which realizes the effective combination of parts, reduces the assembly cost, and can also ensure the safety of electrical conduction, further reducing safety hazards. At the same time, the matching mode of the first base body 7, the second base body 8, and the third base body 12 is also convenient for maintenance and replacement. The overall structural design is reasonable and it will be safer to use.
[0029] In this embodiment, a second connecting hole is provided at a central position on the inner side of the second base body 8 relative to the second contact piece 11. A mounting shaft 14 is provided at the second connecting hole. A spring seat 15 is provided on the mounting shaft 14. A first spring 16 is connected between the spring seat 15 and the corresponding second contact piece 11. By providing the spring seat 15 at the central position, the first spring 16 on the spring seat 15 provides a strong force for the second contact piece 11. Therefore, the second contact piece 11 can be more stably contacted with the first contact piece 10, thereby ensuring the stability of electrical conduction and a reasonable structural design.
[0030] In this embodiment, a conductive pin 17 is provided on the second contact piece 11 to cooperate with the first contact piece 10. The rod of the conductive pin 17 is provided for the first spring 16 to be sleeved. A receiving hole is provided at the corresponding position of the spring seat 15. The other end of the first spring 16 is located in the receiving hole. The second contact piece 11 uses the conductive pin 17 to contact the first contact piece 10, which has a better conductive effect. At the same time, the conductive pin 17 and the receiving hole also provide stable support for the first spring 16, making the effect provided by the first spring 16 stronger.
[0031] In this embodiment, the spring seat 15 is axially movable and cooperates with the mounting shaft 14. The first seat body 7 is provided with a third connecting hole at a central position on the inner side of the first contact piece 10. A connecting sleeve 18 is provided in the third connecting hole. The other end of the mounting shaft 14 cooperates with the connecting sleeve 18. During the process of the second contact piece 11 rotating to cooperate with the first contact piece 10, a force will be generated. The force applied to the first spring 16 will be converted into axial movement of the spring seat 15. The first spring 16 will not easily reduce its use effect during long-term use, and the service life of the first spring 16 will be longer. By arranging the third connecting hole and the connecting sleeve 18 for use on the first seat body 7, the installation effect of the mounting shaft 14 is good, and the effective use of the spring seat 15 is guaranteed. Therefore, the contact effect between the first contact piece 10 and the second contact piece 11 will be better and the cooperation life will be longer.
[0032] In this embodiment, the explosion-proof socket 5 forms a first annular groove at the bottom end of the first base body 7, and a first sealing member 19 is provided in the first annular groove. The explosion-proof plug 6 forms a second annular groove at the bottom end of the third base body 12, and a second sealing member 20 is provided in the second annular groove. By providing the first sealing member 19 and the second sealing member 20, the sealing effect inside the explosion-proof socket 5 and the explosion-proof plug 6 is enhanced, making the combined use of the explosion-proof socket 5 and the explosion-proof plug 6 safer.
[0033] In this embodiment, a limiting ring platform 21 is formed on the outer periphery of the explosion-proof plug 6 to cooperate with the locking position. The bottom of the limiting ring platform 21 forms a limiting fit with the upper end surface of the explosion-proof socket 5 and is provided with a third ring groove. A third sealing member 22 is provided in the third ring groove. A fourth sealing member 23 is provided between the outer peripheral wall of the explosion-proof socket 5 and the matching position of the explosion-proof power supply box 1. The limiting ring platform 21 is used to limit the insertion depth of the explosion-proof plug 6. Therefore, when the limiting ring platform 21 forms a limiting fit with the upper end of the explosion-proof socket 5, the explosion-proof plug 6 is rotated to make the second conductive column 13 on the internal third seat body 12 drive the second seat body 8 to rotate to the locking position. The structure is simple and the design is reasonable. By providing the third sealing member 22 at the matching position of the explosion-proof plug 6 and the explosion-proof socket 5, and providing the fourth sealing member 23 at the matching position of the explosion-proof socket 5 and the explosion-proof power supply box 1, the use of the explosion-proof socket 5 and the explosion-proof plug 6 is safer.
[0034] In this embodiment, a protective cover 24 is connected to the outer peripheral wall of the explosion-proof socket 5 via a pin with a second spring. The protective cover 24 cooperates with the front end of the explosion-proof socket 5. The protective cover 24 can cover the front end of the explosion-proof socket 5, thereby preventing liquid from flowing into the interior of the explosion-proof socket 5 when it is not mated with the explosion-proof plug 6, thereby ensuring safety of use.
[0035] In this embodiment, the explosion-proof power supply box 1 is composed of a power box main shell 25 and a power box cover shell 26. The power box cover shell 26 is fixedly connected to the front end of the power box main shell 25 by bolts. Protrusions 27 are formed on the end walls of both sides of the power box main shell 25. A fourth ring groove is provided at the corresponding position of the power box cover shell 26. A fifth seal 28 is provided in the fourth ring groove. The protrusion 27 is tightly fitted with the fifth seal 28. The power box main shell 25 and the power box cover shell 26 are open structures before being closed, which is convenient for the power box main shell 25 and the power box cover shell 26 to set components such as the power wiring device 2, the first power introduction device 3 and the second power introduction device 4. When the power box main shell 25 and the power box cover shell 26 are fixed, the protrusion 27 will press the fifth seal 28 tightly into the fourth ring groove, thereby forming effective protection for the power box main shell 25 and the power box cover shell 26, thereby avoiding leakage inside the power box main shell 25 and ensuring the explosion-proof effect.
[0036] In this embodiment, the explosion-proof power supply maintenance socket box also includes an explosion-proof control box body 29, which is composed of a control box main shell 30 and a control box cover shell 31. A power control device 32 is installed in the control box main shell 30. The power control device 32 is a circuit breaker. The power control device 32 is connected to the power wiring device 2 through a connecting wire. The lower end of the control box main shell 30 and the upper end of the power box main shell 25 are both provided with a threading port. The connecting wire is connected to the power control device 32 and the power wiring device 2 through the threading port. A glue-sealed filler is provided in the threading port at the lower end of the control box main shell 30. The filler is epoxy resin or 8501 glue, which can ensure better sealing and explosion-proof effect, and can also fix the position of the connecting wires passing through. The control box cover shell 31 is fixedly connected to the front end of the control box main shell 30 by bolts. The control box cover shell 31 is sealed with a control switch 33 that cooperates with the power control device 32. At the same time, a fifth annular groove is provided between the joint of the control box main shell 30 and the control box cover shell 31, and a sixth sealing member 34 is provided in the fifth annular groove. By arranging the sixth sealing member 34 in the fifth annular groove, when the control box main shell 30 contacts the control box cover shell 31, the sealing effect of the explosion-proof power maintenance socket box is increased.
[0037] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.
Claims
1. An explosion-proof power supply maintenance socket box, comprising an explosion-proof power supply box (1), a power supply wiring device (2) installed in the explosion-proof power supply box (1), a first power supply introduction device (3) and a second power supply introduction device (4) respectively matched with the power supply wiring device (2) are provided at the lower end and the front end of the explosion-proof power supply box (1), characterized in that: The second power supply introduction device (4) comprises an explosion-proof socket (5) and an explosion-proof plug (6); a fixed first seat body (7) and a second seat body (8) which can be rotated to a locked position are provided inside the explosion-proof socket (5); a plurality of first conductive columns (9) are integrally provided on the first seat body (7); the other ends of the first conductive columns (9) are all connected to first contact pieces (10); the first contact pieces (10) are evenly distributed on the inner sides of corresponding ends of the first seat body (7) in a circumferential manner; the second seat body (8) is provided with corresponding second contact pieces (10); 1), and a first connection socket corresponding to the second contact piece (11), the explosion-proof plug (6) is provided with a fixed third seat body (12), the third seat body (12) is integrally provided with a corresponding second conductive column (13), the second conductive column (13) is matched in the corresponding first connection socket and is connected with the corresponding second contact piece (11), and when the second conductive column (13) drives the second seat body (8) to rotate to the locking position, the second contact piece (11) and the corresponding first contact piece (10) are in contact and connected.
2. The explosion-proof power supply maintenance socket box according to claim 1, characterized in that: The second seat body (8) is provided with a second connection socket at a central position on the inner side of the second contact piece (11); a mounting shaft (14) is provided at the second connection socket; a spring seat (15) is provided on the mounting shaft (14); and a first spring (16) is connected between the spring seat (15) and the corresponding second contact piece (11).
3. The explosion-proof power supply maintenance socket box according to claim 2, characterized in that: The second contact piece (11) is provided with a conductive pin (17) that matches the first contact piece (10); the rod of the conductive pin (17) is provided for the first spring (16) to be sleeved; a receiving hole is provided at a corresponding position of the spring seat (15); the other end of the first spring (16) is located in the receiving hole.
4. The explosion-proof power supply maintenance socket box according to claim 3, characterized in that: The spring seat (15) is axially movable and matched with the installation shaft (14); a third connecting hole is provided at a central position of the first seat body (7) relative to the inner side of the first contact piece (10); a connecting sleeve (18) is provided in the third connecting hole; and the other end of the installation shaft (14) is matched with the connecting sleeve (18).
5. The explosion-proof power supply maintenance socket box according to claim 1, characterized in that: The explosion-proof socket (5) forms a first annular groove at the bottom end of the first seat body (7), and a first sealing member (19) is arranged in the first annular groove. The explosion-proof plug (6) forms a second annular groove at the bottom end of the third seat body (12), and a second sealing member (20) is arranged in the second annular groove.
6. The explosion-proof power supply maintenance socket box according to claim 1, characterized in that: A limiting ring platform (21) is formed on the outer periphery of the explosion-proof plug (6) to cooperate with the locking position, the bottom of the limiting ring platform (21) forms a limiting fit with the upper end surface of the explosion-proof socket (5) and is provided with a third ring groove, a third sealing member (22) is provided in the third ring groove, and a fourth sealing member (23) is provided between the outer peripheral wall of the explosion-proof socket (5) and the matching position of the explosion-proof power supply box (1).
7. The explosion-proof power supply maintenance socket box according to claim 1, characterized in that: A protective cover (24) is connected to the outer peripheral wall of the explosion-proof socket (5) via a plug with a second spring, and the protective cover (24) is matched with the front end of the explosion-proof socket (5).
8. The explosion-proof power supply maintenance socket box according to claim 1, characterized in that: The explosion-proof power supply box (1) is composed of a power supply box main shell (25) and a power supply box cover shell (26); the power supply box cover shell (26) is fixedly connected to the front end of the power supply box main shell (25) by bolts; protrusions (27) are formed on the end walls of both sides of the power supply box main shell (25); a fourth annular groove is provided at a corresponding position of the power supply box cover shell (26); a fifth sealing member (28) is provided in the fourth annular groove; the protrusion (27) is tightly fitted with the fifth sealing member (28).