Door opening interlocking mechanism of mining high-voltage permanent magnet vacuum power distribution device

Abstract

A door opening interlocking mechanism of a mining high-voltage permanent magnet vacuum power distribution device comprises an interlocking seat, a hook and an action baffle, a fixing shaft is installed outside the interlocking seat, and the hook is rotationally connected to the fixing shaft; a limiting shaft is arranged at the end part of the hook; a pressing plate matched with the limiting shaft is arranged in the door cover; a first support shaft sleeve and a second support shaft sleeve are respectively arranged outside the interlocking seat, a first action shaft and a second action shaft are respectively arranged in the first support shaft sleeve and the second support shaft sleeve, and the first action shaft and the second action shaft are connected through a linkage plate; the second action shaft is connected with the second supporting shaft sleeve through a tension spring; limiting jacks are formed in the side walls of the door cover and the power distribution box body; the action baffle is installed on the side of the distribution trolley. The defects in the prior art are overcome, the door cover can be opened only when the power distribution trolley needs to move to the maintenance position, the problem that the power distribution trolley is pushed to be closed due to misoperation can be effectively prevented after the door is opened, and then the safety of the whole feed switch is effectively guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power equipment, and in particular to a door opening interlocking mechanism of a high-voltage permanent magnet vacuum power distribution device for mining. Background Art

[0002] In conventional mining flameproof distribution devices and integrated protection devices, the current trend is that the electrical device body can realize manual mechanical opening and closing operations without opening the cover. That is, when the door cover is closed, the electrical device body can be swung back to the maintenance position by using a crank on a special shaft on the door cover, thereby ensuring the absolute safety of the circuit or performing further operations such as opening the cover for maintenance. This step requires the interlocking of the shell, the electrical device body and the door cover to ensure the safety of the operation process.

[0003] The main body of an electrical device is often referred to as a "distribution trolley." Typically, the trolley is connected to a rotating shaft that passes through the housing. A groove in the shaft forms a retaining relationship with a locking rod, which extends into a notch in the sliding door cover, interlocking the door cover with the main body. However, because the interlocking mechanism is located outside the distribution box, it is susceptible to damage and deformation from external forces, resulting in the door cover being unable to open. Summary of the Invention

[0004] In response to the shortcomings of the prior art, the present invention provides a door-opening interlock mechanism for a high-voltage permanent-magnet vacuum power distribution device for mining. This mechanism overcomes the shortcomings of the prior art and features a rational design. This mechanism ensures that the distribution trolley must be moved to the maintenance position before the door cover can be opened. Furthermore, after the door is opened, the mechanism effectively prevents the distribution trolley from being pushed into the switch due to misoperation, thereby effectively ensuring the safety of the entire feeder switch. Furthermore, the mechanism effectively prevents the door cover from being unable to open due to damage and deformation of the door-opening interlock mechanism caused by external forces.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A door opening interlock mechanism for a high-voltage permanent magnet vacuum power distribution device for mining comprises an interlock seat, a hook, and an action baffle. The interlock seat is fixedly mounted on the side wall of the inner cavity of a power distribution box. A fixed shaft is fixedly mounted above the outer surface of the interlock seat. The middle of the hook is rotatably connected to the outer surface of the fixed shaft via a rotating through hole. A hook groove is formed on the lower surface of one end of the hook. A limit shaft is fixedly mounted on the outer surface of the other end of the hook. A door cover is mounted on the front side of the power distribution box along an up and down sliding manner. A pressure plate is fixedly mounted on the inner surface of the door cover. The lower surface of the pressure plate contacts the limit shaft.

[0007] The cam is fixedly connected to the first supporting shaft sleeve in the middle of the outer surface of the interlocking seat, and the middle of the first supporting shaft sleeve is horizontally slidably connected to the first action shaft, and the lower part of the outer surface of the interlocking seat is fixedly connected to the second supporting shaft sleeve, and the middle of the second supporting shaft sleeve is horizontally slidably connected to the second action shaft, and the first action shaft and the second action shaft are close to each other and are transmitted through a linkage plate; a tension spring connecting plate is provided on the inner side of one end of the second action shaft close to the first action shaft, and one end of the tension spring is connected to the tension spring connecting plate, and the other end of the tension spring is fixedly connected to the second support shaft sleeve; the door cover and the side wall of the distribution box body are both provided with corresponding limit holes, and the end of the second action shaft away from the first action shaft is movably inserted in the limit hole; a linkage plate mounting shaft is fixedly installed on the outer surface of the interlocking seat, and the middle of the linkage plate is rotatably connected to the outer surface of the linkage plate mounting shaft;

[0008] The action baffle is installed on the side of the power distribution trolley, the side of the action baffle cooperates and conflicts with the end of the first action shaft, and the upper surface of the action baffle cooperates and is hooked with the hook groove.

[0009] Preferably, the first support sleeve includes a first support plate and a first hollow sleeve, one end of the first support plate is fixedly connected to the outer surface of the interlocking seat, and the other end of the first support plate is fixedly connected to the first hollow sleeve; the second support sleeve includes a second support plate and a second hollow sleeve, one end of the second support plate is fixedly connected to the outer surface of the interlocking seat, and the second support plate is fixedly connected to the second hollow sleeve; a tension spring connecting hole is opened on the surface of the second hollow sleeve, and the end of the tension spring is connected to the tension spring connecting hole.

[0010] Preferably, the first and second movable slots are respectively provided at the ends of the first and second movable slots where the first and second action shafts are close to each other, and the first and second rotating slots are respectively installed with the first and second rotating slots, and the two ends of the linkage plate are movably connected to the first and second movable slots through the first and second rotating shafts.

[0011] Preferably, both ends of the linkage plate are respectively provided with a first strip hole and a second strip hole, the first rotating shaft passes through the first strip hole and the first movable slot and is limitedly installed on the first action shaft by a locking pin, and the second action shaft passes through the second strip hole and the second movable slot and is limitedly installed on the second action shaft by a locking pin.

[0012] The present invention provides a door-opening interlock mechanism for a high-voltage permanent-magnet vacuum power distribution device for mining. The mechanism has the following beneficial effects: By providing an interlock seat, on which a first operating shaft and a second operating shaft are slidably mounted, and by means of a linkage plate, the first and second operating shafts are driven by a linkage plate. Furthermore, through the interaction of a hook and an operating baffle, the door can only be opened after the power distribution trolley reaches the maintenance position. After the door is opened, the hook and the operating baffle engage and limit the trolley, preventing it from returning to the operating position, effectively ensuring maintenance safety. Furthermore, the trolley's spring can only be returned to its operating position when the door cover is closed. This effectively ensures that the trolley can only be closed after the door is closed, effectively preventing the trolley from being pushed into the trolley due to misoperation after the door is opened. Furthermore, the entire door-opening interlock mechanism is located within the power distribution box, thereby meeting interlocking requirements while reducing the overall space occupied by the device. This also effectively prevents the door cover from being damaged or deformed by external forces, preventing the door cover from being opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for describing the prior art.

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 It is a partial enlarged structural schematic diagram of the present invention;

[0016] Figure 3 Schematic diagram of the structure of the interlocking seat in the present invention;

[0017] Figure 4 This is a schematic diagram of the structure of the present invention in conjunction with a power distribution trolley;

[0018] Figure 5 Schematic diagram of the structure of the first action shaft, the second action shaft and the linkage plate in the present invention;

[0019] Figure 6 This is a schematic diagram of the structure in which the first action shaft, the second action shaft and the linkage plate are separated from each other in the present invention;

[0020] Description of the numbers in the figure:

[0021] 1. Interlocking seat; 2. Hook; 3. Action baffle; 4. Distribution box; 5. Fixed shaft; 6. Hook groove; 7. Limit shaft; 8. Door cover; 9. Pressure plate; 10. First support sleeve; 11. First action shaft; 12. Second support sleeve; 13. Second action shaft; 14. Linking plate; 15. Distribution trolley; 16. Tension spring connecting plate; 17. Tension spring; 18. Limit jack; 19. Linking plate mounting shaft; 20. First movable notch; 21. Second movable notch; 22. First rotating shaft; 23. Second rotating shaft; 101; First support plate; 102. First hollow sleeve; 121. Second support plate; 122. Second hollow sleeve; 141. First strip hole; 142. Second strip hole. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention.

[0023] Example 1, as Figure 1-6 As shown, a door opening interlock mechanism of a high-voltage permanent magnet vacuum power distribution device for mining includes an interlock seat 1, a hook 2 and an action baffle 3. The interlock seat 1 is fixedly mounted on the side wall of the inner cavity of the distribution box body 4. A fixed shaft 5 is fixedly mounted above the outer surface of the interlock seat 1. The middle of the hook 2 is rotatably connected to the outer surface of the fixed shaft 5 through a rotating through hole. A hook groove 6 is formed on the lower surface of one end of the hook 2, and a limit shaft 7 is fixedly mounted on the outer surface of the other end of the hook 2. A door cover 8 is mounted on the front side of the distribution box body 4 so as to slide up and down. A pressure plate 9 is fixedly mounted on the inner surface of the door cover 8, and the lower surface of the pressure plate 9 is in contact with the limit shaft 7. The end of the hook 2 close to the hook groove 6 is heavier than the end close to the limit shaft 7.

[0024] A first supporting sleeve 10 is fixedly connected to the middle of the outer surface of the interlock seat 1, and a first action shaft 11 is horizontally slidably connected to the middle of the first supporting sleeve 10. A second supporting sleeve 12 is fixedly connected to the lower surface of the interlock seat 1, and a second action shaft 13 is horizontally slidably connected to the middle of the second supporting sleeve 12. The ends of the first action shaft 11 and the second action shaft 13 that are close to each other are transmission connected through a linkage plate 14; a tension spring connecting plate 16 is provided on the inner side of the end of the second action shaft 13 close to the first action shaft 11, and one end of the tension spring 17 is connected to the tension spring connecting plate 16, and the other end of the tension spring 17 is fixedly connected to the second support sleeve 12; corresponding limiting holes 18 are provided on the side walls of the door cover 8 and the distribution box body 4, and the end of the second action shaft 13 away from the first action shaft 11 is movably inserted into the limiting hole 18; a linkage plate mounting shaft 19 is fixedly installed on the outer surface of the interlock seat 1, and the middle of the linkage plate 14 is rotatably connected to the outer surface of the linkage plate mounting shaft 19;

[0025] The action baffle 3 is mounted on the side of the power distribution trolley 15. The side of the action baffle 3 cooperates and contacts with the end of the first action shaft 11, and the upper surface of the action baffle 3 cooperates and engages with the hook groove 6. The two ends of the linkage plate 14 are respectively provided with a first strip hole 141 and a second strip hole 142. The first rotating shaft 22 passes through the first strip hole 141 and the first movable notch 20 and is fixed to the first action shaft 11 by a locking latch. The second action shaft 13 passes through the second strip hole 142 and the second movable notch 21 and is fixed to the second action shaft 13 by a locking latch.

[0026] A first strip hole 141 and a second strip hole 142 are respectively formed at both ends of the linkage plate 14. The first rotating shaft 22 passes through the first strip hole 141 and is installed on the first action shaft 11 by a locking pin. The second action shaft 13 passes through the second strip hole 142 and is installed on the second action shaft 13 by a locking pin.

[0027] Working principle:

[0028] In the initial state, the distribution trolley 15 is located in the working position in the distribution box 4, and the door cover 8 is in the closed state. Figure 4 As shown, at this time, the action baffle 3 on the side of the distribution trolley 15 is away from the first action shaft 11, and the second action shaft 13 is also moved toward the door cover 8 by the tension of the tension spring 17, so that the second action shaft 13 can always remain inserted into the limiting socket 18, thereby achieving a continuous locking state of the door cover 8. At this time, because the door cover 8 is in a closed state of sliding downward, the pressure plate 9 on the inner surface of the door cover 8 also presses down on the upper part of the limiting shaft 7, so that the hook groove 6 at the other end of the hook 2 is in an upward tilted state.

[0029] When the distribution trolley 15 needs to retreat from the working position to the maintenance position, the action baffle 3 on the side of the distribution trolley 15 is first used to push the first action shaft 11 to move horizontally along the first support shaft sleeve 10, thereby driving one end of the linkage plate 14 to move toward the door cover 8. Since the middle of the linkage plate 14 is rotatably connected to the outer surface of the linkage plate mounting shaft 19, the lever principle is used to make the other end of the linkage plate 14 move away from the door cover 8, and then the second action shaft 13 is driven to move backward away from the door cover 8 through the linkage plate 14, and then the end of the second action shaft 13 is pushed out of the limit socket 18, so that the door cover 8 can slide upward to open the door. In this embodiment, a first strip hole 141 and a second strip hole 142 are respectively provided at both ends of the linkage plate 14. Therefore, when the linkage plate 14 rotates around the linkage plate mounting shaft 19, both ends of the linkage plate 14 and the first action shaft 11 and the second action shaft 13 can have a certain displacement, so as to avoid the problem of the linkage plate 14 being stuck during rotation.

[0030] When the door cover 8 slides upward to open the door, the pressure plate 9 on the inner surface of the door cover 8 will also move upward synchronously. At this time, the pressure plate 9 will separate from the limit shaft 7. Since the end of the hook 2 close to the hook groove 6 is heavier than the end close to the limit shaft 7, the hook 2 will rely on its own gravity to rotate the hook groove 6 downward, so that the hook groove 6 can just be stuck on the action baffle 3 on the side of the distribution trolley 15. At this time, the first action shaft 11 is pressed tightly by the action baffle 3, and the hook groove 6 at the end of the hook 2 just sticks to the action baffle 3, thus forming a closed loop. At this time, when the door cover 8 does not slide downward to close, the distribution trolley 15 can be confined to the maintenance position and cannot enter the vehicle. As a result, the circuit breaker of the distribution trolley 15 cannot close the circuit when the door is open, thereby effectively ensuring maintenance safety.

[0031] When the inspection is completed, the door cover 8 will be slid down and closed first. At this time, the pressure plate 9 will also move downward synchronously to press against the limit shaft 7 again, thereby driving the hook 2 to rotate around the fixed shaft 5 so that the hook groove 6 is in an upward tilted state again. At this time, the hook groove 6 is separated from the action baffle 3 on the side of the distribution trolley 15. Only then can the distribution trolley 15 be controlled to return to the working position again, and the second action shaft 13 is also again inserted into the limit socket 18 through the tension of the tension spring 17 to lock the door cover 8. In this way, after the door cover 8 is opened, the distribution trolley 15 cannot return to the working position of the gate, and can only be returned to the working position by closing the door cover 8.

[0032] In this embodiment, the entire door opening interlocking mechanism is arranged entirely inside the distribution box 4 and does not pass through the distribution box 4, thereby reducing the overall space occupied by the equipment while meeting the interlocking requirements; and it can also effectively avoid the problem of the door opening interlocking mechanism being damaged and deformed by external force, resulting in the door cover 8 being unable to open.

[0033] Embodiment 3, as a further preferred embodiment of embodiment 1, the first support sleeve 10 includes a first support plate 101 and a first hollow sleeve 102. One end of the first support plate 101 is fixedly connected to the outer surface of the interlocking seat 1, and the other end of the first support plate 101 is fixedly connected to the first hollow sleeve 102. The second support sleeve 12 includes a second support plate 121 and a second hollow sleeve 122. One end of the second support plate 121 is fixedly connected to the outer surface of the interlocking seat 1, and the second support plate 121 is fixedly connected to the second hollow sleeve 122. The second hollow sleeve 122 has a tension spring connection hole formed on its surface, and the end of the tension spring 17 is connected to the tension spring connection hole. By providing the first hollow sleeve 102 and the second hollow sleeve 122, a guiding and limiting effect is achieved on the first and second action shafts 11 and 13 during movement, thereby effectively ensuring the stability of the first and second action shafts 11 and 13 during horizontal movement.

[0034] In the fourth embodiment, as a further preferred embodiment of the first embodiment, a first movable notch 20 and a second movable notch 21 are respectively formed at the ends of the first and second operating shafts 11, 13 that are close to each other. A first rotation shaft 22 and a second rotation shaft 23 are respectively mounted in the first and second movable notches 20, 21. The ends of the linkage plate 14 are movably connected to the first and second movable notches 20, 21 via the first and second rotation shafts 22, 23. The provision of the first and second movable notches 20, 21 allows a certain amount of space for movement at both ends of the linkage plate 14 when the linkage plate 14 rotates about the linkage plate mounting shaft 19.

[0035] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A door opening interlocking mechanism for a high voltage permanent magnet vacuum power distribution device for mining, characterized in that: It comprises an interlocking seat (1), a hook (2) and an action baffle (3); the interlocking seat (1) is fixedly mounted on the inner cavity side wall of a distribution box (4); a fixed shaft (5) is fixedly mounted above the outer surface of the interlocking seat (1); the middle of the hook (2) is rotatably connected to the outer surface of the fixed shaft (5); a hook groove (6) is provided on the lower surface of one end of the hook (2); a limit shaft (7) is fixedly mounted on the outer surface of the other end of the hook (2); a door cover (8) is slidably mounted on the front side of the distribution box (4); a pressure plate (9) is fixedly mounted on the inner surface of the door cover (8); the lower surface of the pressure plate (9) is in contact with the limit shaft (7); A first supporting sleeve (10) is fixedly connected in the middle of the outer surface of the interlocking seat (1), a first operating shaft (11) is horizontally slidably connected in the middle of the first supporting sleeve (10), a second supporting sleeve (12) is fixedly connected below the outer surface of the interlocking seat (1), a second operating shaft (13) is horizontally slidably connected in the middle of the second supporting sleeve (12), the first operating shaft (11) and the second operating shaft (13) are connected in transmission via a linkage plate (14) at their ends close to each other; a tension spring is arranged on the inner side of the end of the second operating shaft (13) close to the first operating shaft (11). A connecting plate (16), one end of a tension spring (17) is connected to the tension spring connecting plate (16), and the other end of the tension spring (17) is fixedly connected to the second supporting shaft sleeve (12); the door cover (8) and the side wall of the distribution box (4) are both provided with corresponding limiting holes (18), and one end of the second action shaft (13) away from the first action shaft (11) is movably inserted into the limiting hole (18); a linkage plate mounting shaft (19) is fixedly installed on the outer surface of the interlocking seat (1), and the middle of the linkage plate (14) is rotatably connected to the outer surface of the linkage plate mounting shaft (19); The action baffle (3) is installed on the side of the power distribution trolley (15), the side of the action baffle (3) cooperates with and contacts the end of the first action shaft (11), and the upper surface of the action baffle (3) cooperates with and is hooked with the hook groove (6).

2. A door opening interlocking mechanism for a high voltage permanent magnet vacuum power distribution device for mining according to claim 1, characterized in that: The two ends of the linkage plate (14) are respectively provided with a first strip hole (141) and a second strip hole (142); the first rotating shaft (22) passes through the first strip hole (141) and is installed on the first action shaft (11) by means of a locking latch; the second action shaft (13) passes through the second strip hole (142) and is installed on the second action shaft (13) by means of a locking latch.

3. A door opening interlocking mechanism for a high voltage permanent magnet vacuum power distribution device for mining according to claim 1, characterized in that: The first support sleeve (10) comprises a first support plate (101) and a first hollow sleeve (102), one end of the first support plate (101) is fixedly connected to the outer surface of the interlocking seat (1), and the other end of the first support plate (101) is fixedly connected to the first hollow sleeve (102); the second support sleeve (12) comprises a second support plate (121) and a second hollow sleeve (122), one end of the second support plate (121) is fixedly connected to the outer surface of the interlocking seat (1), and the second support plate (121) is fixedly connected to the second hollow sleeve (122); a tension spring connecting hole is provided on the surface of the second hollow sleeve (122), and the end of the tension spring (17) is connected to the tension spring connecting hole.

4. A door opening interlocking mechanism for a high voltage permanent magnet vacuum power distribution device for mining use according to claim 1, characterized in that: A first movable slot (20) and a second movable slot (21) are respectively provided at the ends of the first movable slot (20) and the second movable slot (21) that are close to each other, and a first rotating shaft (22) and a second rotating shaft (23) are respectively installed in the first movable slot (20) and the second movable slot (21), and two ends of the linkage plate (14) are movably connected to the first movable slot (20) and the second movable slot (21) via the first rotating shaft (22) and the second rotating shaft (23).

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