Visual break point isolating switch box

Abstract

The present invention specifically relates to a visible break disconnect switch box; it includes a box body, a handle arranged outside the box body, an interlocking mechanism and a display device arranged inside the box body. The interlocking mechanism includes an electromagnetic lock, and the electromagnetic lock further includes a lock tongue rod. The handle is connected with a transmission rod, and the transmission rod is connected with the interlocking mechanism and the display device. A first visible window is arranged on the box door of the box body, and the first visible window is used to observe the content displayed by the display device; in the present invention, the staff can clearly identify whether the visible break disconnect switch box is in the open or closed state; in addition, by providing a second lock tongue hole and an electromagnetic lock correspondingly arranged with the second lock tongue hole, when the visible break disconnect switch box is in the energized state, the electromagnetic lock is attracted to the second lock tongue hole, thereby fixing the transmission disc and preventing it from rotating. Therefore, the handle cannot rotate either, and at the same time, the box door cannot be opened, ensuring the safety of the staff.

Description

Technical Field

[0001] The present invention relates to the technical field of disconnect switch boxes, and particularly to a visible-break disconnect switch box. Background Art

[0002] The disconnect switch box plays a role in electrical isolation. When maintenance is required in an electrical circuit, the disconnect switch box serves as an obvious disconnection point, allowing maintenance personnel to perform maintenance with confidence.

[0003] As a very important component in the disconnect switch box, the circuit breaker can quickly cut off the power supply when a short circuit or overcurrent fault occurs in the circuit, preventing the expansion of the fault. At the same time, it can also be used as a general switch to achieve the distribution and control of electric energy. The circuit breaker can be used to distribute electric energy, start asynchronous motors infrequently, and protect power supply lines and motors, etc. It can automatically cut off the circuit when they suffer from serious overload, short circuit, undervoltage and other faults.

[0004] In order to facilitate the control of closing and opening of the existing circuit breaker, an operating handle is provided on the circuit breaker. The operating handle is rotatably connected to the circuit breaker, also called a rotating handle. The staff rotates the rotating handle to change the position of the rotating handle and adjust the closing and opening states of the circuit breaker, thus facilitating the adjustment of the circuit breaker.

[0005] However, the closing and opening states of the current circuit breaker can only be seen whether it is in the opening or closing state by the staff observing carefully through the visible window, which increases the potential safety hazards for the staff during maintenance. In addition, for the current disconnect switch box, whether it is in the energized state or the de-energized state, the disconnect switch box can perform closing or opening operations, which is very likely to cause misoperation of being energized without opening, increasing the potential safety hazards for the staff during maintenance. Summary of the Invention

[0006] The present invention aims at the defects of the prior art and provides a visible-break disconnect switch box that is safe and convenient to use, simple to operate, and more convenient to observe the closing and opening states.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] The visible-break disconnect switch box includes a box body, a handle provided outside the box body, an interlocking mechanism and a display device provided inside the box body. The interlocking mechanism includes an electromagnetic lock, and the electromagnetic lock further includes a lock tongue rod. The handle is connected with a transmission rod, and the transmission rod is connected with the interlocking mechanism and the display device. The electromagnetic lock can lock the transmission rod to prevent it from rotating in the energized state. A first visible window is provided on the box door of the box body, and the first visible window is used to observe the content displayed by the display device.

[0009] Further, the interlocking mechanism includes a transmission mechanism and a transmission disk. The transmission rod is connected to the transmission disk through the transmission mechanism. Four connecting columns are provided on the transmission disk. Four second locking tongue holes matching the locking tongue rod are also provided on the transmission disk. The four second locking tongue holes respectively correspond to the four connecting columns, and the second locking tongue holes are correspondingly arranged with the electromagnetic locks; the display device includes a housing and a display body that can horizontally move within the housing. A second visible window is provided on the housing for displaying the mark on the display body within the housing. One end of the display body is connected to the connecting column through a connecting plate. One end of the connecting plate is hinged to the display body, and the other end is hinged to the connecting column. The handle can rotate 90 degrees clockwise or counterclockwise.

[0010] Further, the four connecting columns are respectively arranged on the same circumference, and a door catch plate is also fixedly provided on the transmission rod.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] In the present invention, the horizontal movement or up-and-down rotation of the display body is driven by the transmission disk to display the on-off state of the visible-break disconnecting switch box, so that the staff can clearly identify whether the visible-break disconnecting switch box is in the off state or the on state; in addition, by providing the second locking tongue holes and the electromagnetic locks correspondingly arranged with the second locking tongue holes, when the visible-break disconnecting switch box is in the energized state, the electromagnetic lock is attracted to the second locking tongue hole, thereby fixing the transmission disk and preventing it from rotating. Therefore, the handle cannot rotate either, and at the same time, the cabinet door cannot be opened, ensuring the safety of the staff. Description of the Drawings

[0013] Figure 1 Structural schematic diagram of the visible-break disconnecting switch box in the on state of Embodiment 1 and Embodiment 2 of the present invention;

[0014] Figure 2 Structural schematic diagram of the visible-break disconnecting switch box in the off state of Embodiment 1 and Embodiment 2 of the present invention;

[0015] Figure 3 Structural schematic diagram of the side of the visible-break disconnecting switch box of Embodiment 1 and Embodiment 2 of the present invention;

[0016] Figure 4 Structural schematic diagram of the first locking hook and the second locking hook being buckled with each other when the cabinet door is closed in Embodiment 1 and Embodiment 2 of the present invention;

[0017] Figure 5 Structural schematic diagram of the U-shaped plate and the locking rod of Embodiment 1 of the present invention;

[0018] Figure 6 is Figure 5 Structural schematic diagram along the A-A direction;

[0019] Figure 7 Schematic diagram of the U-shaped plate, locking plate and pressure rod structure in the second embodiment of the present invention;

[0020] Figure 8 Schematic diagram of the closing state structure of the visible-break disconnecting switch box in the third embodiment of the present invention;

[0021] Figure 9 Schematic diagram of the opening state structure of the visible-break disconnecting switch box in the third embodiment of the present invention;

[0022] Figure 10 Schematic diagram of the side structure of the visible-break disconnecting switch box in the third embodiment of the present invention. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment 1:

[0024] Refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 as shown,

[0025] The present invention provides a visible-break disconnecting switch box, which includes a box body 1, a handle 2 arranged outside the box body 1, an interlocking mechanism and a display device 3 arranged inside the box body 1. The interlocking mechanism includes an electromagnetic lock 4. The electromagnetic lock 4 further includes a lock tongue rod. The handle 2 is connected with a transmission rod 5. The transmission rod 5 is connected with the interlocking mechanism and the display device 3. The electromagnetic lock can lock the transmission rod and prevent it from rotating when it is in the energized state. A first visible window 7 is arranged on the box door 6 of the box body 1. The first visible window is used to observe the content displayed by the display device. The display device is a cuboid or a cube. The display device can rotate with the handle to display two different faces; the words "open" and "close" are respectively arranged on these two faces. When the switch box is in the opening state, the display device displays "open", and when the switch box is in the closing state, the display device displays "close". The handle can rotate clockwise or counterclockwise by an angle of 90 degrees.

[0026] The interlocking mechanism includes a sector-shaped rotating plate 8 and a first locking hook 9 provided at the end of the sector-shaped rotating plate 8. A second locking hook 10 matching the first locking hook 9 is provided on the cabinet door 6. The transmission rod is respectively connected to the sector-shaped rotating plate and the display device. Two first locking tongue holes 81 matching the locking tongue rod are provided on the sector-shaped rotating plate 8. The first locking tongue holes 81 are arranged corresponding to the electromagnetic lock 4. The interlocking mechanism further includes a U-shaped plate 51 provided on the inner surface of the cabinet side plate and a locking rod 52 horizontally passing through the U-shaped plate 51. The transmission rod 5 passes through the locking rod 52. The locking rod 52 is movably connected to the U-shaped plate 51. A return spring 54 is provided between the locking rod 52 and the U-shaped plate 51. The shape of the locking rod is a rod-shaped structure of "vertical-horizontal-vertical" or an L-shaped structure. A bolt 53 is provided on the U-shaped plate, and the bolt passes through one rod of the locking rod and is fixed on the U-shaped plate 51. The return spring 54 is sleeved on the bolt 53. The locking rod 52 is movably connected to the bolt 53. A square through hole 55 with the same cross-section as the transmission rod is provided on the locking rod 52. The locking rod is further provided with a second through hole 56. The second through hole is communicated with the square through hole and the cross-section of the second through hole is larger than that of the square through hole.

[0027] The handle, the transmission rod and the circuit breaker form a linkage. The transmission rod passes through the interlocking mechanism, the display device and the circuit breaker and is connected through square holes. The transmission rod is a square rod. Therefore, the rotation of the transmission rod can drive the interlocking mechanism, the display device and the circuit breaker to rotate.

[0028] Working principle:

[0029] When the switch cabinet needs to be closed, close the cabinet door. When the cabinet door is closed, the end of the second locking hook 10 presses against the locking rod and applies a force to the locking rod. Since the locking rod is movably connected to the U-shaped plate, the locking rod presses the return spring. Due to the movement of the locking rod, the connection between the locking rod and the transmission rod changes from the square through hole to the second through hole. Since the cross-section of the second through hole is larger than that of the square through hole, at this time the transmission rod is not locked by the locking rod and the transmission rod can rotate in the second through hole. That is, after closing the cabinet door, the transmission rod can be rotated 90 degrees until the first locking hook and the second locking hook are engaged with each other to close the cabinet door. At this time, the circuit breaker is in the closed state, and the word "closed" is also displayed on the display device. The word "closed" on the display device can be clearly seen through the first visual window.

[0030] When the switch cabinet needs to be switched off, rotate the transmission rod 90 degrees. The rotation direction of the transmission rod is opposite to that during switching on. The first locking hook and the second locking hook are separated from each other, and the cabinet door opens. Since the second locking hook no longer applies force to the locking rod, the locking rod moves under the action of the return spring. The connection between the locking rod and the transmission rod changes from the second through hole to a square through hole. Since the cross-section of the square through hole is the same as that of the transmission rod, that is, the locking rod and the transmission rod are in a locked state. The locking rod can only move horizontally on the U-shaped plate and cannot rotate clockwise or counterclockwise. Moreover, the U-shaped plate is fixedly arranged on the inner surface of the side plate of the cabinet body. Therefore, after the switch cabinet is switched off, the transmission rod is locked and the handle cannot rotate. At this time, the circuit breaker is in the switched-off state, and the word "OFF" is also displayed on the display device. The word "OFF" on the display device can be clearly seen through the first visual window.

[0031] In the present invention, the second through hole can be a circular hole or a rectangular hole, and the second through hole and the square through hole are interconnected through an opening. When the switch cabinet is in the switched-on state, that is, the cabinet door is closed. If the switch cabinet is still powered on at this time, the locking tongue rod of the electromagnetic lock extends into the first locking tongue hole to lock the fan-shaped rotating plate, so that the fan-shaped rotating plate cannot rotate even under the action of an external force. That is, when the electromagnetic lock locks the fan-shaped rotating plate, the handle cannot rotate. If the handle cannot rotate, the cabinet door cannot be opened, ensuring the safety of operation. Embodiment 2:

[0032] See Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 7 as shown in

[0033] The present invention provides a visible-break disconnecting switch cabinet, which includes a cabinet body 1, a handle 2 arranged outside the cabinet body 1, an interlocking mechanism and a display device 3 arranged inside the cabinet body 1. The interlocking mechanism includes an electromagnetic lock 4. The electromagnetic lock 4 further includes a locking tongue rod. The handle 2 is connected with a transmission rod 5. The transmission rod 5 is connected with the interlocking mechanism and the display device 3. The electromagnetic lock can lock the transmission rod and prevent it from rotating when it is powered on. A first visual window 7 is arranged on the cabinet door 6 of the cabinet body 1. The first visual window is used to observe the content displayed by the display device. The display device is a cuboid or a cube. The display device can rotate with the handle to display two different faces. The words "OFF" and "ON" are respectively arranged on these two faces. When the switch cabinet is in the switched-off state, the display device displays "OFF". When the switch cabinet is in the switched-on state, the display device displays "ON". The handle can rotate 90 degrees clockwise or counterclockwise.

[0034] The interlocking mechanism includes a sector-shaped rotating plate 8 and a first locking hook 9 provided at the end of the sector-shaped rotating plate 8. A second locking hook 10 matching the first locking hook 9 is provided on the cabinet door 6. The transmission rod is respectively connected to the sector-shaped rotating plate and the display device. Two first locking tongue holes 81 matching the locking tongue rod are provided on the sector-shaped rotating plate 8. The first locking tongue holes 81 are arranged corresponding to the electromagnetic lock 4. The interlocking mechanism further includes a U-shaped plate 51 provided on the inner surface of the cabinet side plate, a locking plate 57 provided in the U-shaped plate 51, and a pressure rod 58 connected to the locking plate 57. The transmission rod 5 passes through the locking plate 57. Both sides of the locking plate are movably connected with bolts 53. Both ends of the two bolts 53 are fixed on the U-shaped plate 51. A return spring 54 is sleeved on each of the two bolts. The pressure rod passes through the U-shaped plate and is fixedly connected to the locking plate. The pressure rod 58 and the locking plate are movably connected with the U-shaped plate. A square through hole 55 with the same cross-section as the transmission rod is provided on the locking plate. The locking plate is further provided with a second through hole 56. The second through hole communicates with the square through hole and the cross-section of the second through hole is larger than that of the square through hole.

[0035] The handle, the transmission rod and the circuit breaker form a linkage. The transmission rod passes through the interlocking mechanism, the display device and the circuit breaker and is connected through square holes. The transmission rod is a square rod. Therefore, the rotation of the transmission rod can drive the interlocking mechanism, the display device and the circuit breaker to rotate.

[0036] Working principle:

[0037] When the switch cabinet needs to be closed, close the cabinet door. When the cabinet door is closed, the end of the second locking hook 10 presses against the pressure rod and applies a force to the pressure rod. The pressure rod drives the locking plate to move. Since the locking plate is movably connected to the U-shaped plate, the locking plate presses the return spring. Due to the movement of the locking plate, the connection between the locking plate and the transmission rod changes from the square through hole to the second through hole. Since the cross-section of the second through hole is larger than that of the square through hole, the transmission rod is not locked by the locking plate at this time and can rotate in the second through hole. That is, after closing the cabinet door, the transmission rod can be rotated 90 degrees until the first locking hook and the second locking hook are engaged with each other to close the cabinet door. At this time, the circuit breaker is in the closed state and the word "closed" is also displayed on the display device. The word "closed" on the display device can be clearly seen through the first visual window.

[0038] When the switch cabinet needs to be switched off, rotate the transmission rod 90 degrees. The rotation direction of the transmission rod is opposite to that during closing. The first locking hook and the second locking hook are separated from each other, and the cabinet door opens. Since the second locking hook no longer applies force to the pressure rod, the locking plate moves under the action of the return spring. The connection between the locking plate and the transmission rod changes from the second through hole to a square through hole. Since the cross-section of the square through hole is the same as that of the transmission rod, that is, the locking plate and the transmission rod are in a locked state. The locking plate can only move horizontally on the U-shaped plate and cannot rotate clockwise or counterclockwise. Moreover, the U-shaped plate is fixedly arranged on the inner surface of the side plate of the cabinet body. Therefore, after the switch cabinet is switched off, the transmission rod is locked and the handle cannot rotate. At this time, the circuit breaker is in the switched-off state, and the word "OFF" is also displayed on the display device. The word "OFF" on the display device can be clearly seen through the first visual window.

[0039] In the present invention, the second through hole can be a circular hole or a rectangular hole, and the second through hole and the square through hole are interconnected through an opening. When the switch cabinet is in the closed state, that is, the cabinet door is closed, if the switch cabinet is still powered on at this time, the locking tongue rod of the electromagnetic lock extends into the first locking tongue hole to lock the fan-shaped rotating plate, so that the fan-shaped rotating plate cannot rotate even under the action of an external force. That is, when the electromagnetic lock locks the fan-shaped rotating plate, the handle cannot rotate. If the handle cannot rotate, the cabinet door cannot be opened, ensuring the safety of operation. Embodiment Three:

[0040] See Figure 8 、 Figure 9 、 Figure 10 as shown in

[0041] The present invention provides a visible-break disconnect switch cabinet, which includes a cabinet body 1, a handle 2 arranged outside the cabinet body 1, an interlocking mechanism and a display device 3 arranged inside the cabinet body 1. The interlocking mechanism includes an electromagnetic lock 4. The electromagnetic lock 4 further includes a locking tongue rod. The handle 2 is connected with a transmission rod 5. The transmission rod 5 is connected with the interlocking mechanism and the display device 3. The electromagnetic lock can lock the transmission rod to prevent it from rotating in the powered-on state. A first visual window 7 is arranged on the cabinet door 6 of the cabinet body 1. The first visual window is used to observe the content displayed by the display device.

[0042] The interlocking mechanism includes a transmission mechanism 12 and a transmission disk 13. The transmission rod 5 is connected to the transmission disk 13 through the transmission mechanism 12. The transmission mechanism 12 is a square hole that can control the opening and closing of the circuit breaker. The middle part of the transmission disk 13 is also a square hole, and the cross-section of the transmission rod is also square. The transmission rod 5 matches the square holes of the transmission disk 13 and the transmission mechanism. Therefore, the rotation of the transmission rod 5 can control the rotation of the transmission mechanism 12 and the transmission disk 13, so as to control the opening and closing of the circuit breaker and display the opening and closing states. Four connecting columns 14 are provided on the transmission disk 13. Four second locking tongue holes 15 that match a locking tongue rod (not shown) are also provided on the transmission disk 13. The second locking tongue holes 15 respectively correspond to the four connecting columns 14. The second locking tongue holes 15 are arranged corresponding to the electromagnetic lock 4. That is, no matter how the transmission disk rotates, there will be a second locking tongue hole 15 corresponding to the electromagnetic lock 4 when the transmission disk is stationary, which is convenient for the locking tongue rod (not shown) to extend into the second locking tongue hole 15 to lock the transmission disk when the electromagnetic lock is energized, that is, to lock the transmission rod to prevent it from rotating; The display device 3 includes a housing 31 and a display body 32 that can move horizontally in the housing 31. A second visual window 33 is provided on the housing 31 for displaying the marks on the display body inside the housing. One end of the display body 32 is connected to the connecting column 14 through a connecting plate 16. One end of the connecting plate 16 is hinged to the display body 32, and the other end is hinged to the connecting column; The handle can rotate 90 degrees clockwise or counterclockwise. The four connecting columns are respectively arranged on the same circumference, and the included angle formed between adjacent connecting columns among the four connecting columns is 90 degrees. A door buckle plate 17 is also fixedly provided on the transmission rod 5.

[0043] Working principle: The handle, the transmission mechanism and the circuit breaker form a linkage, that is, the handle controls the rotation of the transmission mechanism by rotation to control the opening or closing of the circuit breaker. The transmission mechanism is provided with a transmission disc, and the transmission disc rotates together with the transmission mechanism. Therefore, when the handle is rotated, the transmission disc also rotates together. At least one connecting column is arranged on the transmission disc, and a display device is also included. The display device includes a housing and a display body that can move horizontally in the housing. The words "open" and "close" are respectively arranged on the display body, and they are arranged in parallel on the same horizontal plane. A second visual window is arranged on the housing for displaying the signs on the display body in the housing. When the word "open" is displayed in the visual window, it means that the visual break disconnecting switch box is in the open state; when the word "close" is displayed in the visual window, it means that the visual break disconnecting switch box is in the closed state, enabling the staff to more intuitively distinguish the opening and closing states of the visual break disconnecting switch box. One end of the display body is connected to the connecting column through a connecting plate. One end of the connecting plate is hinged to the display body, and the other end is hinged to the connecting column. Through the hinged method, the transmission disc can more conveniently control the movement of the display body through the connecting plate. For example, when the visual break disconnecting switch box is in the closed state and the transmission disc rotates 90 degrees counterclockwise, the visual break disconnecting switch box is in the open state; similarly, when the visual break disconnecting switch box is in the open state and the transmission disc rotates 90 degrees clockwise, the visual break disconnecting switch box is in the closed state.

[0044] As a specific embodiment of the present invention, four connecting columns are evenly arranged on the transmission disc, and the four connecting columns are respectively arranged on the same circumference. The included angle formed between adjacent connecting columns among the four connecting columns is 90 degrees. By setting these four connecting columns, three of them are in a standby state. Arranging them on the same circumference and setting the included angle formed between adjacent ones to 90 degrees is also for more convenient replacement. Four second locking tongue holes are also arranged on the transmission disc, and the four second locking tongue holes respectively correspond to the four connecting columns. The electromagnetic lock is arranged corresponding to the second locking tongue holes. The four second locking tongue holes and the four connecting columns are all arranged corresponding to each other, and the electromagnetic lock is arranged corresponding to the second locking tongue holes, that is, regardless of whether the visual break disconnecting switch box is in the open or closed state, the electromagnetic lock and the second locking tongue holes can correspond. If the visual break disconnecting switch box is in the energized state, the locking tongue rod of the electromagnetic lock will extend into the second locking tongue hole to lock the transmission disc. At this time, the transmission disc cannot rotate, and the transmission mechanism cannot rotate either, that is, the handle cannot rotate either. A door buckle plate is also fixedly arranged on the transmission rod. In the actual implementation of the present invention, when the visual break disconnecting switch box is in the closed state, the door buckle plate just buckles the door frame, that is, when the visual break disconnecting switch box is in the closed state, the box door is in the closed state. If the visual break disconnecting switch box is in the energized state at this time, the handle just cannot rotate, that is, the handle cannot rotate and the box door cannot be opened either. Through such a setting, the maintenance is made safer.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Visual break-point isolating switch box, characterized in that: It includes a box body, a handle arranged outside the box body, an interlocking mechanism and a display device arranged inside the box body. The interlocking mechanism includes an electromagnetic lock, and the electromagnetic lock further includes a locking tongue rod. The handle is connected with a transmission rod, and the transmission rod is connected with the interlocking mechanism and the display device. A first visual window is arranged on the door of the box body, and the first visual window is used for observing the content displayed by the display device. The interlocking mechanism includes a transmission mechanism and a transmission disk. The transmission rod is connected with the transmission disk through the transmission mechanism. Four connecting columns are arranged on the transmission disk, and four second locking tongue holes matching with the locking tongue rod are further arranged on the transmission disk. The four second locking tongue holes respectively correspond to the four connecting columns, and the second locking tongue holes are arranged corresponding to the electromagnetic lock. The display device includes a housing and a display body capable of horizontally moving inside the housing. A second visual window is arranged on the housing for displaying the mark on the display body inside the housing. One end of the display body is connected with the connecting column through a connecting plate. One end of the connecting plate is hinged with the display body, and the other end is hinged with the connecting column. The handle can rotate 90 degrees clockwise or counterclockwise. The four connecting columns are respectively arranged on the same circumference, and a door catch plate is also fixedly arranged on the transmission rod.

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