An electrical safety switch structure and an electrical switch distribution box comprising the same

Abstract

The application relates to the technical field of electrical switch distribution boxes, and discloses an electrical safety switch structure and an electrical switch distribution box comprising the same. The distribution box body is internally provided with an isolating switch, a circuit breaker group, a mistaken touch prevention assembly and a partition assembly. The mistaken touch prevention assembly is matched with the blade through a clamping head, so that the isolating switch cannot be randomly closed or disconnected under an unconfirmed safety state, thus effectively avoiding mistaken operation, strengthening the stability and reliability of the mistaken touch prevention assembly, enhancing the limiting capacity, preventing mistaken triggering caused by external force or improper operation, and preventing mistaken operation through the cooperation between the partition assembly on the circuit breaker group and the push rod, thus ensuring the stable operation of the circuit breaker group. The distribution box body is provided with indicator lamps matched with the isolating switch and the circuit breaker group, which can display the working state of the equipment in real time and provide clear state feedback for the operator. The distribution box effectively improves the safety and operation convenience of the equipment, and reduces the risk of mistaken operation and electrical short circuit.

Description

Technical Field

[0001] This invention relates to the field of electrical switch distribution box technology, and particularly to an electrical safety switch structure and an electrical switch distribution box including the structure. Background Technology

[0002] Distribution boxes are commonly used electrical equipment in power systems. Their main function is to open, close, control, and protect electrical equipment during the power generation, transmission, distribution, and energy conversion processes. Low-voltage electrical switch distribution boxes are widely used in power transmission and transformation equipment and automated production lines. However, existing low-voltage electrical switch distribution boxes lack robust protection devices. The isolating switches on the boxes are almost entirely without any safety mechanisms, making it easy to close or disconnect them. When performing equipment maintenance, live work is usually prohibited, so the switches must be disconnected.

[0003] In a distribution cabinet anti-misoperation safety switch and outdoor electrical switch distribution cabinet with application number CN202011420180.0, the transmission component includes a mutually matched guide push block and a swing rod. The guide wheel enters the guide groove, and the movement of the guide push block nearing or moving away forces the guide wheel to drive the swing rod to rotate counterclockwise or clockwise through the guide groove. The rotation of the swing rod causes the locking pin assembly to retract or extend from the mounting seat to release or restore the obstruction to the lock seat. In a mechanical interlocking device for a low-voltage electrical switch distribution cabinet with application number CN201711484383.4, there is a disconnecting switch linkage shaft, a linkage shaft locking mechanism that can keep the disconnecting switch in the open state, and a linkage shaft unlocking mechanism that releases the linkage shaft locking state. The disconnecting switch linkage shaft is coaxial with the disconnecting switch and is connected in transmission.

[0004] However, in actual use, in order to prevent accidental operation, the locking mechanism in the designed anti-accidental-touch structure is too complicated. The anti-accidental-touch structure makes the normal operation process cumbersome. Maintenance personnel need extra steps or time when closing or closing the circuit breaker, which increases the inconvenience of operation. Especially in emergency situations, even if an anti-accidental-touch structure is designed, the staff's understanding and operation of these protection mechanisms may still produce errors. For example, unclear understanding of the unlocking sequence of the locking device or the warning signal may lead to misoperation or ignoring the warning signal.

[0005] Therefore, the present invention proposes an electrical safety switch structure and an electrical switch distribution box including the structure to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide an electrical safety switch structure and an electrical switch distribution box including the structure, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an electrical switch distribution box, comprising a distribution box body, a protective door hinged to the distribution box body, a disconnecting switch installed on the left side inside the distribution box body, a knife switch configured on the disconnecting switch, a circuit breaker group installed on the right side inside the distribution box body, an anti-accidental contact component matched to the disconnecting switch, and an isolation component matched to the circuit breaker group fixed on the distribution box body; The anti-accidental contact component includes a mounting base fixed on the disconnect switch. Three sets of rotating plates are rotatably mounted on the mounting base via a central shaft. The three sets of rotating plates are connected by a connecting rod. Each set of rotating plates has an integrally formed locking head at its end that matches the switch. A helical spring is sleeved on the outer side of the central shaft between two adjacent sets of rotating plates. One end of each helical spring is fixed on the middle rotating plate, and the other end is fixed on the mounting base. When the switch is closed, the rotating plate is pressed against the disconnector by the restoring force of the helical spring, and the locking head is limited and abuts against the root of the switch. When the switch is open, the end of the switch is locked onto the locking head at the end of the rotating plate, and the rotating plate is limited and abuts against the end of the switch by the compression and restoring force of the helical spring.

[0008] Preferably, the anti-accidental touch component further includes a storage slot formed on the fixed base, all three sets of rotating plates are stored in the storage slot, the two ends of the central shaft are fixed to the side wall of the storage slot, and the left and right ends of the fixed base are fixed with connecting ears, and the connecting ears are fixed to the disconnect switch by connecting bolts.

[0009] Preferably, the top of the engaging head is configured as a guide portion, and the guide portion is an arc-shaped head. The bottom of the engaging head is provided with an engaging groove, and the engaging groove matches the end of the guillotine. A pull cable is fixed on the intermediate rotating plate, and a pull ring is fixed to the end of the pull cable.

[0010] Preferably, the anti-accidental touch component further includes a reinforcing member disposed on the fixed base. The reinforcing member includes three sets of slides formed in the storage groove, and each set of slides corresponds to a rotating plate. A slide plate is slidably mounted in each set of slides. A return spring is connected between the slide plate and the inner side wall of the slide. A guide wheel is fixed on the other side wall of the slide plate. A pull rope is fixed on each set of rotating plates. The other end of the pull rope passes around the guide wheel and is fixed on the slide plate.

[0011] Preferably, the circuit breaker group includes multiple circuit breakers, and each group of circuit breakers is equipped with a push rod. The isolation assembly includes a fixing plate fixed to the inner side wall of the distribution box. Bolts are installed on the fixing plate, and the ends of the bolts are rotatably fitted with baffles via bearings. The baffles correspond to the push rods.

[0012] Preferably, the left and right sides of the distribution box are respectively set as a switch compartment and an electrical compartment. The disconnect switch is installed in the switch compartment, and a guide rail is installed in the electrical compartment. A relay module and a conversion terminal block are set on the guide rail, and the circuit breaker group is snapped onto the guide rail.

[0013] Preferably, the protective door is provided with a first indicator light corresponding to the disconnect switch on the left side, and the protective door is provided with a second indicator light matching the circuit breaker group on the right side.

[0014] The present invention provides an electrical safety switch structure for an electrical switch distribution box, including an anti-accidental contact component and a reinforcing device disposed on a disconnecting switch, and an isolation component disposed on a circuit breaker group.

[0015] The technical effects and advantages of this invention are as follows: This invention employs an anti-misoperation component and an isolation component to provide limit protection for the disconnecting switch and the circuit breaker group, respectively. The anti-misoperation component, by limiting the disconnecting switch, effectively prevents misoperation regardless of whether the disconnecting switch is closed or open. Similarly, the isolation component, by limiting the circuit breaker group, avoids the risk of misoperation of the circuit breaker group, thereby achieving interference protection for equipment operation. The invention has a simple structural design and is optimized for the disconnecting switch. By designing new anti-misoperation components, reinforcing devices, and isolation components, the workflow of the distribution box is optimized, which improves equipment safety, reduces operational difficulty, simplifies the operation process, and avoids the problem of operators misoperating due to misunderstanding of the anti-misoperation structure, thereby ensuring the stability and safety of electrical equipment during operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the assembly structure of the disconnect switch and the anti-accidental contact component of the present invention; Figure 4 This is a schematic diagram of the anti-accidental touch component structure of the present invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram of section A in the middle; Figure 6 This is a first-view structural diagram of the circuit breaker group and isolation assembly of the present invention. Figure 7 This is a second-view structural schematic diagram of the circuit breaker group and isolation assembly of the present invention.

[0017] In the diagram: 10. Distribution box; 11. Protective door; 12. Switch room; 13. Electrical room; 14. Disconnecting switch; 141. Knife switch; 15. Guide rail; 16. Relay module; 17. Transfer terminal block; 18. Circuit breaker group; 181. Push rod; 20. Anti-accidental contact component; 21. Fixing base; 22. Storage slot; 23. Central shaft; 24. Turning plate; 25. Engaging head; 26. Guide part; 27. Engaging slot; 28. Connecting rod; 29. ​​Helical spring; 210. Cable; 211. Connecting ear; 30. Isolation component; 31. Fixing plate; 32. Bolt; 33. Baffle; 40. Reinforcing device; 41. Slide rail; 42. Slide plate; 43. Return spring; 44. Guide wheel; 45. Pull rope. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] like Figures 1 to 7 As shown, this embodiment discloses an electrical switch distribution box, including a distribution box body 10, a protective door 11 hinged to the distribution box body 10, a disconnecting switch 14 installed on the left side inside the distribution box body 10, a knife switch 141 configured on the disconnecting switch 14, a circuit breaker group 18 installed on the right side inside the distribution box body 10, an anti-misoperation component 20 matchedly installed on the disconnecting switch 14, and an isolation component 30 matched with the circuit breaker group 18 fixed on the distribution box body 10. The anti-misoperation component 20 limits the disconnecting switch 14, so that the disconnecting switch 14 can be limited whether it is closed or open, thus avoiding the situation of misoperation. Similarly, the isolation component 30 installed on the circuit breaker group 18 can effectively limit the circuit breaker group 18, thereby preventing the circuit breaker from interfering with closing, thus effectively preventing misoperation and greatly improving the safety of the distribution box during use.

[0020] Please see Figures 2-5 The anti-accidental contact component 20 includes a mounting base 21 fixed on the disconnect switch 14. Three sets of rotating plates 24 are rotatably mounted on the mounting base 21 via a central shaft 23. The three sets of rotating plates 24 are connected by a connecting rod 28. Each set of rotating plates 24 has an integrally formed engagement head 25 that matches the knife switch 141 at its end. A spiral spring 29 is sleeved on the outside of the central shaft 23 between two adjacent sets of rotating plates 24. One end of each spiral spring 29 is fixed on the middle rotating plate 24, and the other end is fixed on the mounting base 21.

[0021] In actual use, the rotating plate 24 can rotate around the central axis 23, which facilitates the limiting of the switch 141 when the rotating plate 24 rotates. Moreover, the helical spring 29 can provide rotational force to the rotating plate 24 through its own rebound force. Therefore, when the switch 141 is closed, the rotating plate 24 is attached to the disconnector switch 14 under the reset rebound force of the helical spring 29, and the locking head 25 is limited and abuts against the root of the switch 141 to prevent the switch 141 from being opened by accident, thus improving electrical safety. When the switch 141 is opened, the end of the switch 141 is locked on the locking head 25 at the end of the rotating plate 24. The rotating plate 24 is limited and abuts against the end of the switch 141 under the compression rebound force of the helical spring 29. Thus, after the switch 141 is opened, it can be locked by the locking head 25 to prevent the switch 141 from rotating or from rotating in case of accidental contact and closing.

[0022] Please see Figures 2-5 The anti-accidental touch component 20 also includes a storage groove 22 on the fixed base 21. All three sets of rotating plates 24 are stored in the storage groove 22. The two ends of the central shaft 23 are fixed to the side wall of the storage groove 22. The left and right ends of the fixed base 21 are fixed with connecting ears 211, and the connecting ears 211 are fixed to the disconnect switch 14 by connecting bolts. The top of the locking head 25 is set as a guide part 26, and the guide part 26 is an arc-shaped head. The bottom of the locking head 25 is provided with a locking groove 27, and the locking groove 27 matches the end of the switch 141. A pull cable 210 is fixed on the middle rotating plate 24, and a pull ring is fixed at the end of the pull cable 210.

[0023] In actual use, when the switch 141 is in the closed state, only when the operator manually pulls the pull ring, the pull cable 210 pulls the rotating plate 24 to overcome the rebound force of the spiral spring 29 and drive the rotating plate 24 to rotate around the central axis 23. This allows the locking head 25 to disengage from the base of the switch 141, and then the switch 141 can be manually removed to complete the circuit breaker operation. After the switch 141 is removed, the pull ring is manually released, so that the rotating plate 24, under the action of the rebound force of the spiral spring 29, drives the locking head 25 to engage at the end of the switch 141, thus completing the clamping and limiting of the switch 141. This restricts the closing path of the switch 141 and improves the safety of use.

[0024] Please see Figures 3-5To improve the limiting capability of the locking head 25 on the knife switch 141, the anti-accidental contact assembly 20 also includes a reinforcing member 40 mounted on the fixed base 21. The reinforcing member 40 includes three sets of slides 41 formed in the storage slot 22, with each set of slides 41 corresponding to the rotating plate 24. A sliding plate 42 is slidably mounted in each set of slides 41. A return spring 43 is connected between the sliding plate 42 and the inner wall of the slide 41. A guide wheel 44 is fixed on the other side wall of the sliding plate 42. A pull rope 45 is fixed on each set of rotating plates 24, with the other end of the pull rope 45 passing around the guide wheel 44 and fixed to the sliding plate 42. In actual use, when the rotating plate 24 rotates... When the central shaft 23 rotates, the pull rope 45 drives the slide plate 42 to move within the slide rail 41 as the rotating plate 24 rotates. The guide wheel 44 can guide and limit the pull rope 45, giving it better constraint. This allows the return spring 43 to be stretched, increasing the clamping force of the locking head 25 at the end of the rotating plate 24 on the switch 141 and preventing it from coming off. When the switch 141 is in the closed state, the locking head 25 presses against the base of the switch 141, and the return spring 43 also increases the resistance to the switch 141 being accidentally disconnected, improving the protection against accidental disconnection.

[0025] Please see Figure 2 , Figure 6 and Figure 7 The circuit breaker group 18 includes multiple circuit breakers, and each circuit breaker group is equipped with a push rod 181. The isolation assembly 30 includes a fixing plate 31 fixed to the inner wall of the distribution box 10. Bolts 32 are installed on the fixing plate 31. The end of the bolt 32 is rotatably fitted with a baffle 33 through a bearing, and the baffle 33 corresponds to the push rod 181. The push rod 181 on the circuit breaker group 18 has a fixed flipping path. Therefore, the baffle 33 is provided on the outside of the push rod 181 to set an obstacle on the flipping path of the push rod 181, thereby improving the ability to prevent accidental contact. Moreover, the setting of the bolt 32 can adjust the position of the baffle 33, thereby facilitating the push rod 181 to perform closing and opening operations. The isolation assembly 30 is used to realize the locking operation of the circuit breaker group 18, ensuring the stable operation of the circuit breaker group 18 and preventing misoperation or electrical short circuit problems caused by external factors.

[0026] Please see Figure 2 The left and right sides of the distribution box 10 are respectively set as switch chamber 12 and electrical room 13. The disconnect switch 14 is installed in the switch chamber 12. The electrical room 13 is equipped with a guide rail 15. The guide rail 15 is equipped with a relay module 16 and a conversion terminal block 17. The circuit breaker group 18 is engaged on the guide rail 15.

[0027] Please see Figure 1The protective door 11 has a first indicator light 19 on the left side corresponding to the disconnector switch 14, and a second indicator light 110 on the right side matching the circuit breaker group 18. The first indicator light 19 corresponds one-to-one with the open / closed state of the knife switch 141 of the disconnector switch 14. Thus, during maintenance, the state of the disconnector switch 14 can be confirmed by the indication state of the first indicator light 19. The second indicator light 110 can directly display the operating status of the circuit breaker group 18. The indicator light system provides timely operation information to the staff, further improving the safety and ease of operation of the equipment.

[0028] This embodiment discloses an electrical safety switch structure for an electrical switch distribution box, including an anti-misoperation component 20 and a reinforcing member 40 installed on a disconnector switch 14, and an isolation component 30 installed on a circuit breaker group 18. The anti-misoperation component 20, through the matching of the locking head 25 with the knife switch 141, ensures that the disconnector switch 14 cannot be arbitrarily closed or opened without confirming a safe state, thus avoiding misoperation. The reinforcing member 40 improves the stability and reliability of the anti-misoperation component 20, ensuring that the turntable 24 can operate smoothly during operation and avoiding accidental triggering caused by external force or improper operation. The isolation component 30, through the design of the baffle 33, effectively prevents the circuit breaker group 18 from misoperation or short circuit, ensuring the stable operation of electrical equipment.

[0029] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An electrical switch distribution box, comprising a distribution box body (10), wherein a protective door (11) is hingedly installed on the distribution box body (10), characterized in that: A disconnector switch (14) is installed on the left side inside the distribution box (10). A knife switch (141) is configured on the disconnector switch (14). A circuit breaker group (18) is installed on the right side inside the distribution box (10). An anti-accidental contact component (20) is installed on the disconnector switch (14). An isolation component (30) matching the circuit breaker group (18) is fixed on the distribution box (10). The anti-accidental contact component (20) includes a fixed base (21) fixed on the disconnect switch (14). Three sets of rotating plates (24) are rotatably mounted on the fixed base (21) via a central shaft (23). The three sets of rotating plates (24) are connected by a connecting rod (28). Each set of rotating plates (24) has an integrally formed locking head (25) at its end that matches the knife switch (141). A spiral spring (29) is sleeved on the outside of the central shaft (23) between two adjacent sets of rotating plates (24). One end of each set of spiral springs (29) is fixed on the middle rotating plate (24), and the other end is fixed on the fixed base (21). When the switch (141) is closed, the rotating plate (24) is attached to the disconnector (14) under the reset and rebound force of the helical spring (29), and the locking head (25) is limited and abuts against the root of the switch (141). When the switch (141) is open, the end of the switch (141) is locked on the locking head (25) at the end of the rotating plate (24), and the rotating plate (24) is limited and abuts against the end of the switch (141) under the compression and rebound force of the helical spring (29).

2. The electrical switch distribution box according to claim 1, characterized in that: The anti-accidental touch component (20) also includes a storage slot (22) opened on the fixed base (21). All three sets of rotating plates (24) are stored in the storage slot (22). The two ends of the central shaft (23) are fixed on the side wall of the storage slot (22). The left and right ends of the fixed base (21) are fixed with connecting ears (211), and the connecting ears (211) are fixed to the disconnect switch (14) by connecting bolts.

3. The electrical switch distribution box according to claim 2, characterized in that: The top of the locking head (25) is configured as a guide part (26), and the guide part (26) is an arc-shaped head. The bottom of the locking head (25) is provided with a locking groove (27), and the locking groove (27) matches the end of the guillotine (141). A pull cable (210) is fixed on the intermediate rotating plate (24), and a pull ring is fixed at the end of the pull cable (210).

4. The electrical switch distribution box according to claim 3, characterized in that: The anti-accidental touch component (20) also includes a reinforcing device (40) set on the fixed base (21). The reinforcing device (40) includes three sets of slides (41) opened on the storage slot (22), and each set of slides (41) corresponds to the rotating plate (24). A sliding plate (42) is slidably assembled in each set of slides (41). A return spring (43) is connected between the inner side wall of the sliding plate (42) and the slide (41). A guide wheel (44) is fixed on the other side wall of the sliding plate (42). A pull rope (45) is fixed on each set of rotating plates (24). The other end of the pull rope (45) passes around the guide wheel (44) and is fixed on the sliding plate (42).

5. The electrical switch distribution box according to claim 1, characterized in that: The circuit breaker group (18) includes multiple circuit breakers, and each group of circuit breakers is equipped with a push rod (181). The isolation assembly (30) includes a fixing plate (31) fixed on the inner side wall of the distribution box (10). A bolt (32) is installed on the fixing plate (31). The end of the bolt (32) is rotatably fitted with a baffle (33) through a bearing, and the baffle (33) corresponds to the push rod (181).

6. The electrical switch distribution box according to claim 1, characterized in that: The distribution box (10) has a switch compartment (12) and an electrical compartment (13) on the left and right sides respectively. The disconnect switch (14) is installed in the switch compartment (12). The electrical compartment (13) is equipped with a guide rail (15). The guide rail (15) is equipped with a relay module (16) and a conversion terminal block (17). The circuit breaker group (18) is engaged on the guide rail (15).

7. The electrical switch distribution box according to claim 1, characterized in that: The protective door (11) is equipped with a first indicator light (19) corresponding to the disconnect switch (14) on the left side, and a second indicator light (110) matching the circuit breaker group (18) is equipped with a second indicator light (110) on the right side of the protective door (11).

8. An electrical safety switch structure, applied to an electrical switch distribution box as described in any one of claims 1-7, characterized in that: It includes an anti-accidental contact component (20) and a reinforcing device (40) installed on the disconnector (14) and an isolation component (30) installed on the circuit breaker group (18).

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