An inflatable cabinet with a locking mechanism

Abstract

The present application relates to the technical field of inflatable cabinets, and discloses an inflatable cabinet with a chain mechanism, which includes a cabinet body, a lower door connected to the cabinet body, an isolation and grounding mechanism and a circuit breaker mechanism arranged in the cabinet body, wherein the cabinet body is provided with a chain mechanism for locking or unlocking the lower door, and the chain mechanism includes a chain rod slidably arranged in the cabinet body, a lock block fixed to the chain rod on the side facing the lower door, a linkage assembly arranged between the circuit breaker operating shaft and the chain rod, and a positioning assembly arranged between the grounding operating shaft and the chain rod, wherein a lock slot for the lock block to extend into is provided in the lower door; when the circuit breaker operating shaft rotates, the lock block can be moved into or out of the lock slot under the action of the linkage assembly to achieve locking or unlocking of the lower door; the positioning assembly can move with the grounding operating shaft to position the chain rod in a state where the lower door is unlocked. When using the present application, it is not easy for an operator to accidentally enter a live interval, and the safety is high.

Description

Technical Field

[0001] The present application relates to the technical field of inflatable cabinets, and in particular to an inflatable cabinet with a locking mechanism. Background Art

[0002] The gas-insulated switchgear is an indoor AC high-voltage gas-insulated metal-enclosed switchgear. The entire switchgear combines air insulation with sulfur hexafluoride gas compartments. It has the characteristics of compact structure, flexible operation, and reliable interlocking. It is suitable for small secondary substations, switchgear, box-type substations, residential communities, industrial and mining enterprises, large shopping malls, as well as airports, subways, and railways in power systems.

[0003] A related art inflatable cabinet includes a cabinet body, a hinged lower door, an isolating and grounding switch, and a circuit breaker mounted within the cabinet body. When in use, the circuit breaker is closed, the isolating switch in the isolating and grounding switch is closed, and the grounding switch is open. If an operator accidentally opens the lower door during this time, they could easily enter a live compartment and cause a safety accident. This poor safety feature warrants improvement. Summary of the Invention

[0004] In order to prevent operators from accidentally entering the live compartment and improve safety, the present application provides an inflatable cabinet with a locking mechanism.

[0005] The present application provides an inflatable cabinet with a chain mechanism that adopts the following technical solutions:

[0006] The lock mechanism is actuated by a lever, which is fixed to the lock body, and a lever, which is engaged with the lever, and a lever which is engaged with the lever, and a lever which is engaged with the lever, and a lever which is engaged with the lever, and a lever which is engaged with the lever, and a lever which is engaged with the lever, and a lever which is engaged with the lever, and a lever which is engaged with the lever, and a lever which is engaged with the lever, and a lever which is engaged with the lever, and a lever which is engaged with the lever, and a lever which is engaged with the lever, and a lever which is engaged with the lever, and a lever which is engaged with the lever, and a lever which is engaged with the lever, and a lever which is engaged with the lever, and a lever which is engaged with the lever, and a lever which is engaged with the lever, and a lever which is engaged with the lever,

[0007] By adopting the above technical solution, when the inflatable cabinet is in normal use, the lower door is closed, the circuit breaker operating shaft is in a state of controlling the closing of the circuit breaker mechanism, the isolating operating shaft is in a state of controlling the closing of the isolating switch, and the grounding operating shaft is in a state of controlling the opening of the grounding switch. At this time, the lock block is located in the lock slot, and the lower door is limited by the lock block and is difficult to move relative to the cabinet body, so that the lower door cannot be opened. It is not easy for the operator to accidentally enter the energized interval due to accidentally opening the lower door, and the safety hazard is small and the safety is high.

[0008] To open the lower door, first rotate the circuit breaker operating shaft to open the circuit breaker mechanism, then rotate the isolating switch operating shaft to open the isolating switch, and then rotate the grounding operating shaft to close the grounding switch. This lock block can only be removed from the lock slot to unlock the lower door after the circuit breaker operating shaft is turned to the open position, preventing operators from accidentally opening or closing the lower door. A positioning assembly positions the interlocking lever in the unlocked position, facilitating maintenance and other operations while the lower door is open.

[0009] Optionally, the linkage assembly includes a first shift block fixed to the circumferential side wall of the circuit breaker operating shaft and a linkage block fixed to the side of the chain rod facing the first shift block, and the linkage block can move toward or away from the side of the lower door when the first shift block swings.

[0010] By adopting the above technical solution, when the circuit breaker operating shaft rotates, the first shift block will rotate synchronously therewith, thereby causing the linkage block and the chain rod to move toward or away from the lower door, so that the lock block moves into or out of the lock slot to achieve locking or unlocking of the lower door. The structure is simple and the driving effect is good.

[0011] Optionally, a moving block is fixed on one side of the chain rod close to the isolation operating shaft, and a second shift block that abuts against the moving block is fixed on the circumferential side wall of the isolation operating shaft, and the second shift block can drive the isolation operating shaft to rotate circumferentially when the moving block slides.

[0012] By adopting this technical solution, when the circuit breaker operating shaft rotates to the open state, the interlocking rod moves away from the lower door. The moving block moves synchronously with the interlocking rod, which in turn causes the second shifting block to rotate the isolating operating shaft, thereby also rotating the isolating operating shaft to the open state. When driving the circuit breaker mechanism and the isolating switch to open, the operator only needs to perform a single operation to achieve the sequential movement of the circuit breaker operating shaft and the isolating operating shaft, making operation simple.

[0013] Optionally, the cabinet includes a mounting plate for assembling the isolation grounding mechanism and the circuit breaker mechanism, and a drive assembly for controlling the rotation of the circuit breaker operating shaft and the isolation operating shaft is provided on the mounting plate, and the drive assembly includes a first gear fixed on the circuit breaker operating shaft, a second gear fixed on the isolation operating shaft, a drive rack for engaging the first gear and the second gear, and a power member for driving the drive rack to slide, and the sliding direction of the drive rack is parallel to the sliding direction of the locking rod.

[0014] By adopting this technical solution, when the power element is operating, the drive rack slides parallel to the interlocking rod. When the drive rack meshes with the first gear, the force applied to the first gear drives the circuit breaker operating shaft to rotate, thereby opening and closing the circuit breaker mechanism. When the drive rack meshes with the second gear, the force applied to the second gear drives the isolation operating shaft to rotate, thereby opening and closing the disconnector. This arrangement allows the power element to provide a rotational power source for opening and closing the circuit breaker mechanism and disconnector, which is more labor-saving and convenient than manual rotation.

[0015] Optionally, a pushing assembly for pushing and pulling the drive rack is provided on the mounting plate, and the pushing assembly includes a pushing and pulling block and a pushing cylinder for driving the pushing and pulling block to move toward or away from one side of the chain rod. The extension and retraction direction of the piston rod of the pushing cylinder is perpendicular to the sliding direction of the chain rod, and the power part is slidably arranged on the mounting plate.

[0016] By adopting the above technical solution, when repairing the circuit breaker mechanism or the disconnector, the operator can control the drive rack to move to the side away from the locking rod through the push assembly to release the meshing relationship between the drive rack and the first gear or the second gear, so that the operator can perform maintenance operations.

[0017] Optionally, the positioning assembly includes a positioning block slidably set on the mounting plate, a connecting rod hingedly set between the positioning block and the grounding operating shaft, and a positioning groove for the positioning block to extend into is provided on the connecting rod; when the grounding operating shaft rotates, the positioning block can move toward or away from one side of the connecting rod under the action of the connecting rod.

[0018] By adopting the above technical solution, when the lower door is locked, the grounding switch is in the open state, and the positioning block is misaligned with the positioning slot. After the lower door is unlocked, the chain rod will move to the side away from the lower door, causing the relative position of the positioning slot and the positioning block to change. After the positioning slot is moved to align with the positioning block, the grounding operating shaft is rotated to the state of controlling the grounding switch to close. The positioning block will move to the side close to the chain rod under the action of the connecting rod, and then the positioning block will extend into the positioning slot to position the chain rod in the state where the lower door is unlocked. With this arrangement, before the grounding operating shaft is turned to the open position, the chain rod cannot move relative to the lower door, that is, the circuit breaker operating shaft and the isolation operating shaft cannot be turned to the closed position. The operation sequence is controllable and the safety is higher.

[0019] Optionally, the positioning block includes a connecting portion hingedly connected to the connecting rod, a positioning portion located on the side of the connecting portion facing the chain rod, and a positioning spring fixed between the connecting portion and the positioning portion, wherein the expansion and contraction direction of the positioning spring is perpendicular to the sliding direction of the chain rod.

[0020] By adopting the above technical solution, the positioning spring is arranged between the positioning part and the connecting part. On the one hand, the overall length of the positioning block can be adjusted, and the positioning block has stronger adaptability; on the other hand, in some special cases, the positioning part can be moved out of the positioning slot without rotating the grounding operating shaft, thereby unlocking the locking rod, which is highly practical.

[0021] Optionally, a guiding slope is provided on one end of the positioning portion facing the chain rod, and the guiding slope is located on the side of the positioning portion facing the lower door.

[0022] By adopting the above technical solution, the guiding slope plays a guiding role when the positioning part moves into the positioning groove, which helps to improve the plugging efficiency of the positioning block and the positioning groove, thereby shortening the action time of the entire mechanism.

[0023] Optionally, the connecting rod includes a main rod and an insertion rod integrally formed at both ends of the main rod, and a slot for the insertion rod to be inserted is provided on the eccentric position and the connecting part of the grounding operating shaft, and the insertion rod is rotatably engaged with the slot.

[0024] By adopting the above technical solution, when assembling the connecting rod, it is only necessary to insert one of the rods into the slot of the grounding operating shaft and the other rod into the slot of the connecting part, and the rod can be hinged between the grounding operating shaft and the slot. The structure is simple and easy to disassemble and assemble.

[0025] Optionally, a fixing block is provided on the mounting plate, a reset block is fixed on the side wall of the chain rod, and a reset spring is provided between the reset block and the fixing block for driving the chain rod to move toward the lower door.

[0026] By adopting the above technical solution, after the positioning block moves out of the positioning slot, the chain rod will automatically move to the side close to the lower door under the action of the reset spring, so that the lock block automatically moves into the lock slot, thereby accelerating the locking efficiency of the lower door.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. When the lower door is closed, the circuit breaker operating shaft and the isolating operating shaft are in the closed position, the grounding operating shaft is in the open position, and the lock block is located in the lock slot to prevent the lower door from opening, thereby preventing operators from accidentally entering the energized compartment and minimizing safety hazards;

[0029] 2. When the circuit breaker operating shaft rotates to the open position, the first shift block will interfere with the linkage block, which will then move the locking rod away from the lower door, causing the locking block to move out of the lock slot, thereby unlocking the lower door. During the movement of the locking rod, the moving block will contact the second shift block, causing the isolation operating shaft to also rotate to the open position, providing good linkage performance.

[0030] 3. When the interlocking rod is in the position of unlocking the lower door, the positioning block is aligned with the positioning slot. After the grounding operating shaft is turned to the closed position, the positioning block will extend into the positioning slot to prevent the interlocking rod from moving relative to the lower door, making it easier for operators to perform maintenance operations. Before the grounding operating shaft is opened, the circuit breaker operating shaft and the disconnector operating shaft cannot be turned to the closed position, providing high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural diagram of an embodiment of the present application.

[0032] Figure 2 It is a structural diagram of the embodiment of the present application when the lower door is in a locked state.

[0033] Figure 3 It is a structural diagram of the embodiment of the present application when the lower door is in an unlocked state.

[0034] Figure 4 It is a structural diagram highlighting the relationship between the positioning assembly and the linkage rod in the embodiment of the present application.

[0035] Figure 5 It is a partial schematic diagram of the pushing component in the embodiment of the present application.

[0036] Description of reference numerals:

[0037] 1. Cabinet; 11. Main cabinet; 12. Mounting plate; 121. Slide rail; 122. Positioning rail; 123. Fixing block; 124. Slide slot; 2. Lower door; 21. Lock slot; 3. Isolation operating shaft; 31. Second shift block; 4. Grounding operating shaft; 41. Slot; 5. Circuit breaker operating shaft; 6. Interlock mechanism; 61. Interlock rod; 611. Moving block; 612. Positioning slot; 613. Reset block; 62. Lock block; 63. Linkage assembly; 631. First shift block; 6 32. Linkage block; 64. Positioning assembly; 641. Positioning block; 642. Connecting rod; 643. Connecting portion; 644. Positioning portion; 645. Positioning spring; 646. Guide ramp; 647. Main rod; 648. Insert rod; 7. Return spring; 8. Driving assembly; 81. First gear; 82. Second gear; 83. Driving rack; 831. Push-pull groove; 832. Give way groove; 84. Power part; 9. Pushing assembly; 91. Push-pull block; 92. Pushing cylinder. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-5 This application is described in further detail.

[0039] The embodiment of the present application discloses an inflatable cabinet with a locking mechanism.

[0040] Reference Figure 1 、 Figure 2 The inflatable cabinet with an interlocking mechanism comprises a cabinet body 1, a lower door 2 hingedly mounted on the cabinet body 1, and an isolation and grounding mechanism and a circuit breaker mechanism disposed within the cabinet body 1. The isolation and grounding mechanism comprises an isolating switch and a grounding switch. The cabinet body 1 comprises a main cabinet 11 and a mounting plate 12 fixedly mounted within the main cabinet 11. The isolation and grounding mechanism and the circuit breaker mechanism are mounted on the mounting plate 12. The mounting plate 12 is provided with an interlocking mechanism 6 for locking and unlocking the lower door 2, preventing it from being opened or closed accidentally.

[0041] Reference Figure 2 、 Figure 3 The isolation and grounding mechanism has an isolation operating shaft 3 for rotating and controlling the opening and closing of the isolation switch, and a grounding operating shaft 4 for rotating and controlling the opening and closing of the grounding switch. The circuit breaker mechanism has a circuit breaker operating shaft 5 for rotating and controlling its opening and closing. The circuit breaker operating shaft 5, the isolation operating shaft 3 and the grounding operating shaft 4 are all rotatably arranged in the mounting plate 12.

[0042] Reference Figure 2 、 Figure 3The interlocking mechanism 6 includes a interlocking rod 61 slidably mounted on the mounting plate 12, a locking block 62 fixed to the side of the interlocking rod 61 facing the lower door 2, a linkage assembly 63 disposed between the circuit breaker operating shaft 5 and the interlocking rod 61, and a positioning assembly 64 disposed between the grounding operating shaft 4 and the interlocking rod 61. The circuit breaker operating shaft 5 and the isolation operating shaft 3 are located on the same side of the interlocking rod 61, while the grounding operating shaft 4 is located on the other side of the interlocking rod 61. A locking slot 21 is defined on the side wall of the lower door 2 facing the interlocking mechanism 6, into which the locking block 62 tightly engages. When the locking block 62 is engaged in the locking slot 21, the lower door 2 is restricted by the locking block 62 and is difficult to rotate, thereby locking the lower door 2.

[0043] Reference Figure 2 、 Figure 3 In order to improve the stability of the chain rod 61 when it slides, a slide rail 121 extending toward the lower door 2 is fixed on the mounting plate 12, and the chain rod 61 is slidably set in the slide rail 121.

[0044] Reference Figure 2 、 Figure 3 The linkage assembly 63 includes a first shift block 631 fixed to the circumferential sidewall of the circuit breaker operating shaft 5 and a linkage block 632 fixed to the side of the linkage rod 61 facing the first shift block 631. Specifically, the linkage block 632 is located at the end of the linkage rod 61 near the lower door 2. When the circuit breaker operating shaft 5 rotates, the first shift block 631 rotates synchronously, causing the linkage block 632 to move toward or away from the lower door 2, thereby moving the locking block 62 into or out of the locking slot 21 to lock or unlock the lower door 2.

[0045] Reference Figure 2 、 Figure 3 A movable block 611 is fixed to the side of the linkage rod 61 near the isolation operating shaft 3. The movable block 611 is located at the end of the linkage rod 61 away from the lower door 2 and has the same shape and size as the linkage block 632. A second shift block 31 is fixed to the circumferential sidewall of the isolation operating shaft 3. The second shift block 31 has the same shape and size as the first shift block 631 and can abut and cooperate with the movable block 611. When the circuit breaker operating shaft 5 and the disconnector operating shaft are in the closed position, the first shift block 631 abuts the lower side of the linkage block 632, and the second shift block 31 abuts the upper side of the movable block 611. When the circuit breaker operating shaft 5 is rotated counterclockwise to the open position, the first shift block 631 pushes the linkage block 632 upward, causing the linkage rod 61 to drive the second shift block 31 upward, thereby rotating the isolation operating shaft 3 to the open position. In this way, the circuit breaker operating shaft 5 and the isolation operating shaft 3 can be driven in sequence in one step, so that the circuit breaker mechanism is opened first and the isolation switch is opened later.

[0046] Reference Figure 3 、 Figure 4The positioning assembly 64 includes a positioning block 641 slidably mounted on the mounting plate 12, a connecting rod 642 hingedly mounted between the positioning block 641 and the grounding operating shaft 4, the positioning block 641 including a connecting portion 643 hingedly connected to the connecting rod 642, a positioning portion 644 located on the side of the connecting portion 643 facing the locking rod 61, and a positioning spring 645 fixed between the connecting portion 643 and the positioning portion 644. The positioning spring 645 extends and contracts perpendicular to the sliding direction of the locking rod 61. A positioning slot 612 is defined on the side wall of the locking rod 61 facing the grounding operating shaft 4, into which the positioning portion 644 extends. When the locking rod 61 is moved so that the positioning block 641 is aligned with the positioning slot 612, if the grounding operating shaft 4 is rotated to the closed position, the positioning portion 644 extends into the positioning slot 612, thereby preventing the locking rod 61 from moving relative to the lower door 2.

[0047] Reference Figure 4 In order to improve the plugging efficiency between the positioning block 641 and the positioning groove 612, a guide slope 646 is provided at one end of the positioning portion 644 facing the chain rod 61. The guide slope 646 is located on the side of the positioning portion 644 facing the slope and plays a guiding role.

[0048] Reference Figure 3 、 Figure 4 In order to control the sliding direction of the positioning block 641 and improve the positioning effect of the positioning block 641 on the chain rod 61, a positioning guide rail 122 is fixed on the mounting plate 12 in this embodiment, and the positioning block 641 is slidably set in the positioning guide rail 122.

[0049] Reference Figure 4 The connecting rod 642 comprises a main rod 647 and insert rods 648 integrally formed at both ends of the main rod 647. The insert rods 648 extend perpendicularly to the main rod 647, and both the insert rods 648 and the main rod 647 have circular cross-sections. Specifically, the connecting rod 642 in this embodiment is formed from a bent metal rod. Slots 41 are defined at an eccentric position on the grounding operating shaft 4 and on the connecting portion 643. The inner diameter of the slots 41 is slightly larger than the diameter of the insert rods 648, allowing the insert rods 648 to extend into the slots 41, thereby achieving a hinged connection between the main rod 647, the grounding operating shaft 4, and the connecting portion 643.

[0050] Reference Figure 2 、 Figure 3 To ensure that the locking lever 61 automatically returns to the locked position of the lower door 2 after the positioning block 641 moves out of the positioning slot 612, two fixing blocks 123 are provided on the upper side of the mounting plate 12, one on each opposite side of the locking lever 61. A reset block 613 is fixed to each of the two opposite side walls of the locking lever 61, and a reset spring 7 is provided between the reset block 613 and the adjacent fixing block 123. When the locking lever 61 is unstressed, the elastic force of the reset spring 7 drives the locking lever 61 toward the lower door 2.

[0051] Reference Figure 2 、 Figure 3 A drive assembly 8 is provided on the mounting rod for controlling the rotation of the circuit breaker operating shaft 5 and the isolation operating shaft 3. The drive assembly 8 includes a first gear 81 fixed to the circumferential side wall of the circuit breaker operating shaft 5, a second gear 82 fixed to the isolation operating shaft 3, a drive rack 83 for engaging the first gear 81 and the second gear 82, and a power member 84 for driving the drive rack 83 to slide. In this embodiment, the power member 84 is preferably an electric cylinder. The extension direction of the electric cylinder piston rod is parallel to the sliding direction of the chain rod 61, so that the drive rack 83 can slide in a direction parallel to the chain rod 61.

[0052] Reference Figure 2 、 Figure 3 When the power member 84 is in operation, the drive rack 83 slides relative to the mounting plate 12 and meshes with the first gear 81 or the second gear 82. When the drive rack 83 meshes with the first gear 81, the circuit breaker operating shaft 5 is forced to rotate, thereby controlling the opening and closing of the circuit breaker mechanism. When the drive rack 83 meshes with the second gear 82, the isolation operating shaft 3 is forced to rotate, thereby controlling the opening and closing of the isolation switch.

[0053] Reference Figure 3 、 Figure 5 Furthermore, a push assembly 9 is provided on the mounting plate 12 for driving the drive rack 83 to move toward or away from the locking rod 61. The push assembly 9 includes a push-pull block 91 and a push cylinder 92 for driving the push-pull block 91 to move horizontally. The extension and contraction direction of the piston rod of the push cylinder 92 is parallel to the direction from the drive rack 83 to the locking rod 61. The push-pull block 91 is fixed to the piston rod of the push cylinder 92, and the width of the push-pull block 91 is greater than the diameter of the piston rod of the push cylinder 92. The side wall of the drive rack 83 is provided with a push-pull groove 831 for the push-pull block 91 to slide into, and a clearance groove 832 for the push-pull cylinder 92 to slide into. The width of the clearance groove 832 is slightly greater than the diameter of the piston rod of the push cylinder 92 and less than the width of the push-pull block 91. The extension directions of the clearance groove 832 and the push-pull groove 831 are both parallel to the extension and contraction direction of the piston rod of the power member 84.

[0054] Reference Figure 3 In order to prevent the power member 84 from affecting the movement of the driving rack 83, the power member 84 in this embodiment is slidably set on the mounting plate 12. Specifically, the sliding connection structure between the two is: a slider (not shown in the figure) is fixed on the side wall of the power member 84, and a sliding groove 124 is provided on the mounting plate 12 to slide with the slider. The extension direction of the sliding groove 124 is parallel to the extension direction of the piston rod of the push cylinder 92.

[0055] The implementation principle of the inflatable cabinet with a interlocking mechanism in an embodiment of the present application is: when the inflatable cabinet is in normal use, the lower door 2 is closed, the circuit breaker operating shaft 5 and the isolation operating shaft 3 are in the closed position, the grounding operating shaft 4 is in the open position, and the locking block 62 is located in the lock slot 21, so that the lower door 2 is in a locked state, and it is not easy for the operator to open the lower door 2 by mistake.

[0056] If the lower door 2 needs to be opened, the circuit breaker operating shaft 5 can be turned to the open position first, the isolation operating shaft 3 can be turned to the open position, and then the grounding operating shaft 4 can be turned to the closed position, so that the chain rod 61 moves to the side away from the lower door 2 and the lock block 62 moves out of the lock slot 21. Only then can the lower door 2 be opened. At this time, the positioning block 641 is located in the positioning slot 612, which serves to prevent the movement of the chain rod 61.

[0057] After the lower door 2 is closed again, the grounding operating shaft 4 is first rotated to the open position, causing the positioning block 641 to move out of the positioning slot 612. The locking rod 61, under the action of the return spring 7, moves toward the lower door 2, causing the locking block 62 to move into the locking slot 21. The isolation operating shaft 3 is then rotated to the closed position, and finally the circuit breaker operating shaft 5 is rotated to the closed position, restoring normal operation of the power system where the inflatable cabinet is located.

[0058] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An inflatable cabinet with a locking mechanism, comprising a cabinet body (1), a lower door (2) connected to the cabinet body (1), an isolation grounding mechanism and a circuit breaker mechanism arranged in the cabinet body (1), characterized in that: The isolating grounding mechanism comprises an isolating operating shaft (3) for rotating and controlling the opening and closing of the isolating switch, and a grounding operating shaft (4) for rotating and controlling the opening and closing of the grounding switch; the circuit breaker mechanism comprises a circuit breaker operating shaft (5) for rotating and controlling the opening and closing of the circuit breaker; a chain mechanism (6) for locking or unlocking the lower door (2) is provided in the cabinet (1); the chain mechanism (6) comprises a chain rod (61) slidably provided in the cabinet (1), a lock block (62) fixed on the chain rod (61) on the side facing the lower door (2), and a locking block (62) provided between the circuit breaker operating shaft (5) and the chain rod (61). The invention relates to a circuit breaker ... The assembly (63) comprises a first shift block (631) fixed to the circumferential side wall of the circuit breaker operating shaft (5), and a linkage block (632) fixed to the side of the chain rod (61) facing the first shift block (631). The linkage block (632) can move toward or away from the side of the lower door (2) when the first shift block (631) swings. A moving block (611) is fixed to the side of the chain rod (61) close to the isolation operating shaft (3). A second shift block (31) abutting against the moving block (611) is fixed to the circumferential side wall of the isolation operating shaft (3). The second shift block ( 31) can drive the isolation operating shaft (3) to rotate circumferentially when the moving block (611) slides, the positioning assembly (64) includes a positioning block (641) slidably set on the mounting plate (12), and a connecting rod (642) hingedly set between the positioning block (641) and the grounding operating shaft (4), and the chain rod (61) is provided with a positioning groove (612) for the positioning block (641) to extend into; when the grounding operating shaft (4) rotates, the positioning block (641) can move toward or away from one side of the chain rod (61) under the action of the connecting rod (642).

2. The inflatable cabinet with a locking mechanism according to claim 1, characterized in that: The cabinet (1) includes a mounting plate (12) for assembling an isolation grounding mechanism and a circuit breaker mechanism. A drive assembly (8) for controlling the rotation of a circuit breaker operating shaft (5) and an isolation operating shaft (3) is provided on the mounting plate (12). The drive assembly (8) includes a first gear (81) fixed on the circuit breaker operating shaft (5), a second gear (82) fixed on the isolation operating shaft (3), a drive rack (83) for meshing the first gear (81) and the second gear (82), and a power member (84) for driving the drive rack (83) to slide. The sliding direction of the drive rack (83) is parallel to the sliding direction of the chain rod (61).

3. The inflatable cabinet with a locking mechanism according to claim 2, characterized in that: A pushing assembly (9) for pushing and pulling the driving rack (83) is provided on the mounting plate (12). The pushing assembly (9) includes a pushing block (91) and a pushing cylinder (92) for driving the pushing block (91) to move toward or away from the locking rod (61). The extension direction of the piston rod of the pushing cylinder (92) is perpendicular to the sliding direction of the locking rod (61). The power member (84) is slidably provided on the mounting plate (12).

4. The inflatable cabinet with a locking mechanism according to claim 1, characterized in that: The positioning block (641) includes a connecting portion (643) hingedly connected to the connecting rod (642), a positioning portion (644) located on the side of the connecting portion (643) facing the chain rod (61), and a positioning spring (645) fixed between the connecting portion (643) and the positioning portion (644), wherein the expansion and contraction direction of the positioning spring (645) is perpendicular to the sliding direction of the chain rod (61).

5. The inflatable cabinet with a locking mechanism according to claim 4, characterized in that: A guide slope (646) is provided on one end of the positioning portion (644) facing the chain rod (61), and the guide slope (646) is located on the side of the positioning portion (644) facing the lower door (2).

6. The inflatable cabinet with a locking mechanism according to claim 4, characterized in that: The connecting rod (642) includes a main rod (647) and an inserting rod (648) integrally formed at both ends of the main rod (647). A slot (41) for the inserting rod (648) to extend into is provided on the eccentric position of the grounding operating shaft (4) and the connecting portion (643). The inserting rod (648) is rotatably engaged with the slot (41).

7. The inflatable cabinet with a locking mechanism according to claim 1, characterized in that: A fixing block (123) is provided on the mounting plate (12), a reset block (613) is fixed on the side wall of the chain rod (61), and a reset spring (7) is provided between the reset block (613) and the fixing block (123) for driving the chain rod (61) to move toward the lower door (2).

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