Electric cabinet hand switch lock catch

Abstract

The utility model discloses an electric cabinet hand switch lock catch, which belongs to the technical field of switch cabinet structures and comprises a lock catch seat, the lock catch seat is provided with an assembling groove, and a first side plate and a second side plate which are opposite are arranged on two sides of the assembling groove and at one end of the assembling groove of the lock catch seat. Opposite first through holes are formed in the first side plate and the second side plate, an n-shaped lock rod is rotationally connected between the two first through holes, and a limiting piece is arranged on the side, close to the second side plate, of the lock rod. According to the scheme, the assembling groove in the lock catch base is used for being connected with a switch in a matched mode, the first side plate and the second side plate are used for installing the lock rod, the lock rod plays a role in limiting a pull rod on the switch, the limiting piece can prevent the lock rod from rotating excessively, the rotating range of the pull rod is reduced, and the lock catch can be used for a three-gear switch-out structure. And the lock rod only needs to be provided with two gears, so that the use convenience of the lock catch is improved.

Description

Technical Field

[0001] The utility model relates to a lock buckle structure, more specifically, it relates to a lock buckle for a hand-pull switch of an electric cabinet. Background Art

[0002] In some electric cabinets or switch cabinets, there is usually a switch structure, and some switch structures have three gears, namely upper, middle and lower gears. When the switch is in the upper gear, the electric cabinet is in normal working state, when the switch is in the middle gear, the electric cabinet is in shutdown state, and when the switch is in the lower gear, the electric cabinet is in power generation state. In the working state of the electric cabinet, it is necessary to avoid the three gears of the switch from operating continuously, or when the upper gear is working normally, it is necessary to avoid the switch from falling to the lower gear, so as to ensure the normal operation of the electric cabinet or switch cabinet and improve the safety factor.

[0003] For example: Chinese patent announcement number CN102867667B, announcement date August 6, 2014, invention name is a fully mechanical five-protection 10kV switchgear knife switch anti-misoperation mechanism, the application discloses a switchgear pull-off structure, including a knife switch, an intelligent lock, the knife switch includes a rotating shaft, a locking disk and a handle, the intelligent lock includes a key and a lock core, the locking disk has a first and a second stop groove, a linkage pin extends from one disk surface of the locking disk, and a crank arm is fixed on the lock core. This solution can prevent the switchgear knife switch from misoperation, but the solution is complex in structure and cannot be applied to the pull-off function of three gears. Utility Model Content

[0004] The utility model overcomes the problem that the manual switch of the electric cabinet has a complex structure or may cause the switch to fall, and provides a manual switch lock for the electric cabinet. This solution can be applied to the three-speed switch, has a simple structure, can prevent the three speeds of the switch from moving continuously or falling to other speeds, and improves the safety factor of the electric cabinet.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a lock for a hand-operated switch of an electric cabinet, comprising a lock seat, the lock seat is provided with an assembly groove, opposite first side panels and second side panels are provided on both sides of the assembly groove and at one end of the assembly groove of the lock seat, opposite first through holes are provided on the first side panel and the second side panel, a "X"-shaped locking rod is rotatably connected between the two first through holes, and a limiting plate is provided on the side of the locking rod close to the second side panel. In this solution, the assembly groove on the lock seat is used to cooperate with the switch, the first side panel and the second side panel are used to install the locking rod, the locking rod plays a role of limiting the pull rod on the switch, the limiting plate can prevent the locking rod from excessively rotating, and reduce the rotation range of the pull rod. For a three-gear switch structure, the locking rod only needs to be set to two gears; at the same time, the limiting plate also has a certain weight, and under the action of its own gravity, it can automatically drive the locking rod to rotate and unlock, thereby improving the convenience of using the lock.

[0006] Preferably, the height of the second side plate is greater than that of the first side plate, a second through hole is provided on the second side plate, the position of the second through hole is higher than that of the first through hole, and the second through hole is located on the side of the notch position of the first through hole away from the assembly slot. The size of the second side plate is greater than that of the first side plate, and a second through hole structure is also required to be provided on the second side plate, and the second through hole is used to install the lock buckle, so the position of the second through hole needs to be higher than the position of the first through hole (relative to the surface of the base of the lock buckle seat), so that the lock buckle can limit the locking rod; on the other hand, the position of the second through hole is relative to the first through hole away from the notch of the assembly slot, so that the locking rod can limit the lower gear position of the pull gate.

[0007] Preferably, the limit piece is a fan-shaped structure, and the fan-shaped angle of the limit piece is 87° to 93°. The fan-shaped limit piece can reduce the rotation range of the lock rod. If there is no limit piece, the lock rod can rotate within a range of 180°. By adding a fan-shaped limit piece to the lock rod, the rotation range of the lock rod can be reduced. The preferred angle is 90°, so that the lock rod can only be in two gears: the lower state and the middle state; when the lock rod is in the lower state, the pull switch is generally only in the lower gear, and when the lock rod is in the middle state, the pull switch can be in the middle gear stop state, or in the upper gear normal working state.

[0008] Preferably, the limit piece is located on the side of the lock rod away from the lock seat when the lock rod rotates. In order to ensure that the lock rod cannot reach the upper gear position of the gate during rotation, or exceed the middle position of the lock rod, the limit piece needs to be located on the side of the lock rod away from the lock seat, that is, the limit piece cannot be set between the lock rod and the lock seat.

[0009] Preferably, a lock buckle is provided on the second through hole, and a telescopic rod that can pass through the second through hole is provided on the lock buckle. The lock buckle is used to limit the lock rod, and when the telescopic rod is in an extended state, it is generally used to limit the lock rod from rotating; when the telescopic rod is in a retracted state, the lock rod can be rotated to switch gears.

[0010] Preferably, it further comprises a gate assembly, the gate assembly comprising a gate seat, the gate seat is adapted to the assembly groove, and the lock seat is fixedly connected to the gate seat. The gate seat and the assembly groove are matched together, the lock seat and the gate seat are fixed, and the lock rod on the lock seat can limit the pull rod on the gate seat.

[0011] Preferably, the gate seat is rotatably connected to a pull rod, which is used to switch the gear position of the gate.

[0012] Preferably, the gate seat is semicircular, and the rotation radius of the lock rod is adapted to the radius of the gate seat. In order to facilitate the rotation of the lock rod, the gate seat needs to be designed as an arc structure, and the gate seat can also protect the electrical connection inside the pull rod from being exposed, thereby protecting the internal circuit structure. The rotation radius of the lock rod is slightly larger than the radius of the gate seat, which will not make the structure too large and can ensure the normal movement of the lock rod.

[0013] Preferably, the lock seat is provided with a fixing hole, and the lock seat and the gate seat are detachably connected through the fixing hole. The fixing hole on the lock seat can be a threaded hole, and the same fixing hole is also provided on the gate seat, so that the lock seat and the gate seat can be fixed together by screws, which facilitates the disassembly work between the lock seat and the gate seat and is beneficial to the later maintenance work.

[0014] Compared with the prior art, the beneficial effects of the present invention are: (1) it is suitable for three-position switch pulling, with a simple structure, which can avoid the three positions of the switch pulling being operated continuously or the switch pulling falling to other positions, thereby improving the safety factor of the electrical cabinet; (2) the design is reasonable, the locking rod is designed with only two positions, and the limit plate can promote the rotation of the locking rod to the lower position; (3) the scheme is simple, easy to implement, convenient to assemble and disassemble, and conducive to later maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an axonometric drawing of the present utility model.

[0016] Figure 2 This is another axonometric view of the present invention.

[0017] Figure 3 It is an exploded view of the lock seat of the utility model.

[0018] Figure 4 It is a front view of the utility model.

[0019] Figure 5 This is a schematic diagram of the upper gear position of the pull-gate assembly of the utility model.

[0020] Figure 6 It is a schematic diagram of the middle gear state of the pull-gate assembly of the utility model.

[0021] Figure 7 This is a schematic diagram of the lower gear state of the pull-gate assembly of the utility model.

[0022] Figure 8 It is a structural schematic diagram of the lock buckle of the utility model.

[0023] In the figure: 1. lock seat, 2. assembly groove, 3. first side plate, 4. second side plate, 5. first through hole, 6. lock rod, 7. limit plate, 8. second through hole, 9. lock, 91. lock body, 92. knob, 93. guide groove, 94. fixing part, 10. telescopic rod, 11. gate seat, 12. pull rod, 13. fixing hole, 14. base, 15. second fixing hole, 16. nut. DETAILED DESCRIPTION

[0024] The technical solution of the utility model is further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0025] Example 1: Figures 1 to 3 The illustrated electric cabinet hand-pull switch lock comprises a pull switch assembly and a lock seat 1. The surface of the lock seat 1 is provided with an assembly groove 2. One end of the assembly groove 2 extends to the edge of the lock seat 1 to form a notch, and the other end of the assembly groove 2 is located in the surface of the lock seat 1 to form a groove bottom; so that the assembly groove 2 can accommodate the pull switch assembly inside. The first side plate 3 and the second side plate 4 are provided on both sides of the edge of the lock seat 1, that is, on both sides of the assembly groove 2. The first side plate 3 and the second side plate 4 and the lock seat 1 are an integrally formed structure. Specifically, the first side plate 3 and the second side plate 4 are formed by bending the edge of the lock seat 1 upward. The first side plate 3 and the second side plate 4 are both perpendicular to the surface of the lock seat 1. In this solution, the width dimension of the lock seat 1 (that is, the distance between the first side plate 3 and the second side plate 4) is 100 mm; the length dimension of the lock seat 1 (the length dimension of the side where the first side plate 3 or the second side plate 4 is located) is also 100 mm.

[0026] A first through hole 5 is provided on the first side panel 3 and the second side panel 4. The positions of the two first through holes 5 correspond to each other. The first through hole 5 is close to the bottom surface of the lock seat 1. Specifically, the first through hole 5 can be 10 mm to 20 mm away from the bottom surface of the lock seat 1. In the present embodiment, it is designed to be 15 mm. A locking rod 6 structure is installed on the first through hole 5 on the first side panel 3 and the second side panel 4. The locking rod 6 is in a "J" shape. Both ends of the locking rod 6 are rotatably connected to the first through holes 5 on the first side panel 3 and the second side panel 4 respectively.

[0027] The size of the second side plate 4 is greater than that of the first side plate 3 . Specifically, the width of the second side plate 4 is greater than that of the first side plate 3 , and the height of the second side plate 4 is greater than that of the first side plate 3 . In the present scheme, the first side panel 3 is only used to rotate one end of the connected locking rod 6, so it is only necessary to design a reasonable size. Specifically, the distance from the top of the first side panel 3 to the bottom surface of the lock seat 1 is 35 mm; and a structure for limiting the locking rod 6 needs to be provided on the second side panel 4, so the size of the second side panel 4 needs to be larger. Specifically, a second through hole 8 is provided on the second side panel 4, and the position of the second through hole 8 is biased to the bottom side of the assembly groove 2 relative to the first through hole 5, so that the structure for limiting the locking rod 6 can limit the locking rod 6 downward to prevent the locking rod 6 from rotating downward; at the same time, the position of the second through hole 8 is also far away from the bottom surface of the lock seat 1 relative to the first through hole 5, so that the structure for limiting the locking rod 6 can limit the locking rod 6. If the position of the second through hole 8 is flush with the first through hole 5 or close to the bottom surface of the lock seat 1, the locking rod 6 cannot be limited in any state.

[0028] A limiting plate 7 is provided on the locking rod 6, and the limiting plate 7 is provided on the side of the locking rod 6 close to the second side plate 4, and the limiting plate 7 and the locking rod 6 are fixed by welding; Figure 3 As shown, after the limiting plate 7 is welded and fixed, the main body of the limiting plate 7 is located on the side of the locking rod 6 away from the main body of the bottom surface of the lock seat 1 (that is, during the rotation process, the locking rod 6 is located between the bottom surface of the lock seat 1 and the limiting plate 7), the limiting plate 7 is a fan-shaped structure, the fan-shaped angle of the limiting plate 7 is 90°, a right-angled side of the limiting plate 7 is in contact with the locking rod 6, the center position of the limiting plate 7 is lower than the position of the first through hole 5, and when the plane where the locking rod 6 is located is perpendicular to the bottom surface of the lock seat 1, the other right-angled side of the limiting plate 7 can be as close to the bottom surface of the lock seat 1 as possible, so that if the locking rod 6 continues to rotate upward, it will be resisted by the limiting plate 7 and cannot continue to rotate upward.

[0029] The gate assembly includes a gate seat 11 and a base 14. The gate seat 11 and the base 14 are fixedly connected, and can be fixed by welding. The gate seat 11 includes two left and right parts. The gate seat 11 is rotatably connected to a pull rod 12 structure in the middle. The pull rod 12 can switch the gears for the electric cabinet or switch cabinet. The gate seat 11 is a semicircular structure, which is a common structural form.

[0030] like Figure 1 and Figure 2As shown, the lower surface of the lock seat 1 is fitted with the base 14, and the assembly groove 2 of the lock seat 1 is engaged with the main body of the gate seat 11, and three fixing holes 13 are arranged on the lock seat 1. Specifically, a fixing hole 13 is arranged on the lower side of the bottom of the assembly groove 2 of the lock seat 1 and on both sides of the notch of the assembly groove 2, and corresponding adapter holes are also arranged on the base 14 of the pull-gate assembly corresponding to the three fixing holes 13. The lock seat 1 can be completely fixed on the base of the pull-gate assembly by fasteners such as screws. The installation method is simple and detachable, which is convenient for subsequent maintenance and repair work.

[0031] It should be noted that the diameter of the fixing hole 13 on the lower side of the bottom of the assembly groove 2 is larger than the diameter of the fixing holes 13 on both sides of the notch of the assembly groove 2, and a second fixing hole 15 is provided on the upper side of the base 14 of the pull-gate assembly, and the second fixing hole 15 is located above the gate seat 11. The fixing hole 13 on the lower side of the bottom of the assembly groove 2 and the second fixing hole 15 are mainly used to fix the pull-gate assembly on the surface of the switch cabinet or the electric cabinet, and specifically, the pull-gate assembly is fixed to the electric cabinet by fasteners such as screws.

[0032] It should also be noted that after the lock catch seat 1 is installed on the shutter assembly, the rotation radius of the lock rod 6 will be slightly larger than the radius of the shutter seat 11, so that the lock rod 6 will not interfere with the shutter seat 11 during rotation.

[0033] like Figure 5 As shown, the switch assembly is in the upper position, and the electrical cabinet is in a normal energized working state. At this time, the locking rod 6 is rotated to a horizontal state, that is, the plane where the locking rod 6 is located is perpendicular to the base 14 of the switch assembly. At this time, the pull rod 12 is in the upper position. In normal working conditions, in order to prevent the pull rod 12 from falling due to gravity or external environmental factors (such as equipment vibration or human accidental touch), the locking rod 6 needs to be locked in the position shown in the figure. Specifically, by inserting a limit rod into the second through hole 8, the locking rod 6 is prevented from falling; and even if the pull rod 12 falls, it will only fall to the middle position and stop state, thereby improving the safety index of the equipment. When the switch assembly needs to be switched to the middle position, it is only necessary to pull the pull rod 12 downward and rotate it until it abuts against the locking rod 6, as shown in the figure. Figure 6 At this time, the lock rod 6 is still in the locked limit state, and the lock rod 6 can prevent the pull rod 12 from being pulled down excessively and entering the lower gear state, thereby preventing the three gears of the electric cabinet from being continuously moved and damaging the equipment.

[0034] like Figure 7 As shown, the shutter assembly is in the lower gear state, and the lower gear state needs to be switched from the middle gear. Specifically, the limit rod on the second through hole 8 is pulled out. At this time, the downward limit of the lock rod 6 is released, and the lock rod 6 automatically falls under the action of gravity (including the gravity of the limit piece 7) and rotates until the plane of the lock rod 6 is parallel or nearly parallel to the bottom surface of the lock seat 1. At this time, the pull rod 12 can be pulled to switch to the lower gear of the shutter assembly.

[0035] Example 2: Figures 1 to 3 The illustrated electric cabinet hand-pull switch lock comprises a pull switch assembly and a lock seat 1. The surface of the lock seat 1 is provided with an assembly groove 2. One end of the assembly groove 2 extends to the edge of the lock seat 1 to form a notch, and the other end of the assembly groove 2 is located in the surface of the lock seat 1 to form a groove bottom; so that the assembly groove 2 can accommodate the pull switch assembly inside. The first side plate 3 and the second side plate 4 are provided on both sides of the edge of the lock seat 1, that is, on both sides of the assembly groove 2. The first side plate 3 and the second side plate 4 and the lock seat 1 are an integrally formed structure. Specifically, the first side plate 3 and the second side plate 4 are formed by bending the edge of the lock seat 1 upward. The first side plate 3 and the second side plate 4 are both perpendicular to the surface of the lock seat 1. In this solution, the width dimension of the lock seat 1 (that is, the distance between the first side plate 3 and the second side plate 4) is 100 mm; the length dimension of the lock seat 1 (the length dimension of the side where the first side plate 3 or the second side plate 4 is located) is also 100 mm.

[0036] A first through hole 5 is provided on the first side panel 3 and the second side panel 4. The positions of the two first through holes 5 correspond to each other. The first through hole 5 is close to the bottom surface of the lock seat 1. Specifically, the first through hole 5 can be 10 mm to 20 mm away from the bottom surface of the lock seat 1. In the present embodiment, it is designed to be 15 mm. A locking rod 6 structure is installed on the first through hole 5 on the first side panel 3 and the second side panel 4. The locking rod 6 is in a "J" shape. Both ends of the locking rod 6 are rotatably connected to the first through holes 5 on the first side panel 3 and the second side panel 4 respectively.

[0037] The size of the second side plate 4 is greater than that of the first side plate 3 . Specifically, the width of the second side plate 4 is greater than that of the first side plate 3 , and the height of the second side plate 4 is greater than that of the first side plate 3 . In the present scheme, the first side panel 3 is only used to rotate one end of the connecting locking rod 6, so it only needs to design a reasonable size. Specifically, the distance from the top of the first side panel 3 to the bottom surface of the lock seat 1 is 35 mm; and a lock 9 structure needs to be provided on the second side panel 4, so the size of the second side panel 4 needs to be larger. Specifically, a second through hole 8 is provided on the second side panel 4. The position of the second through hole 8 is biased to the bottom side of the assembly groove 2 relative to the first through hole 5. The second through hole 8 is used to install the lock 9 structure, so that the lock 9 structure can limit the downward position of the locking rod 6 to prevent the locking rod 6 from rotating downward; at the same time, the position of the second through hole 8 is also far away from the bottom surface of the lock seat 1 relative to the first through hole 5, so that the lock 9 structure can limit the locking rod 6. If the position of the second through hole 8 is flush with the first through hole 5 or close to the bottom surface of the lock seat 1, the locking rod 6 cannot be limited by the lock 9 in any state.

[0038] Specifically, Figure 4As shown, a nut member 16 is arranged on the second through hole 8 and on the outside of the second side plate 4. The nut member 16 is welded at the position of the second through hole 8 of the second side plate 4 so that the nut hole is connected with the second through hole 8. The lock buckle 9 structure is installed on the nut member 16. Figure 8 The figure shows a common lock form, including a lock body 91, a knob 92 and a telescopic rod 10. The knob 92 is inserted into the lock body 91. There is a guide groove 93 in the lock body 91. The telescopic rod 10 can slide in the guide groove 93. The end of the knob 92 extends into the guide groove 93 to link with the telescopic rod 10. When the knob 92 is rotated, the telescopic rod 11 can slide along the guide groove 93, so that the telescopic rod 11 extends or retracts into the guide groove 93, thereby limiting the locking rod 6. Specifically, a gear rack linkage mode can be adopted between the telescopic rod 11 and the knob 92. This linkage mode is a common technical solution and will not be repeated.

[0039] A fixing portion 94 is also provided at the outlet end of the guide groove 93, and the fixing portion 94 can be connected with the nut member 16. The nut member 16 has an internal thread, and the outer side of the fixing portion 94 has an external thread, so that the lock buckle 9 can be fixed on the nut member 16 through the fixing portion 94. The lock buckle 9 structure is also detachably assembled with the lock buckle seat 1, the assembly method is simple, and it is convenient for later maintenance and repair.

[0040] A limiting plate 7 is provided on the locking rod 6, and the limiting plate 7 is provided on the side of the locking rod 6 close to the second side plate 4, and the limiting plate 7 and the locking rod 6 are fixed by welding; Figure 3 As shown, after the limiting plate 7 is welded and fixed, the main body of the limiting plate 7 is located on the side of the locking rod 6 away from the main body of the bottom surface of the lock seat 1 (that is, during the rotation process, the locking rod 6 is located between the bottom surface of the lock seat 1 and the limiting plate 7), the limiting plate 7 is a fan-shaped structure, the fan-shaped angle of the limiting plate 7 is 90°, a right-angled side of the limiting plate 7 is in contact with the locking rod 6, the center position of the limiting plate 7 is lower than the position of the first through hole 5, and when the plane where the locking rod 6 is located is perpendicular to the bottom surface of the lock seat 1, the other right-angled side of the limiting plate 7 can be as close to the bottom surface of the lock seat 1 as possible, so that if the locking rod 6 continues to rotate upward, it will be resisted by the limiting plate 7 and cannot continue to rotate upward.

[0041] The gate assembly includes a gate seat 11 and a base 14. The gate seat 11 and the base 14 are fixedly connected, and can be fixed by welding. The gate seat 11 includes two left and right parts. The gate seat 11 is rotatably connected to a pull rod 12 structure in the middle. The pull rod 12 can switch the gears for the electric cabinet or switch cabinet. The gate seat 11 is a semicircular structure, which is a common structural form.

[0042] like Figure 1 and Figure 2As shown, the lower surface of the lock seat 1 is fitted with the base 14, and the assembly groove 2 of the lock seat 1 is engaged with the main body of the gate seat 11, and three fixing holes 13 are arranged on the lock seat 1. Specifically, a fixing hole 13 is arranged on the lower side of the bottom of the assembly groove 2 of the lock seat 1 and on both sides of the notch of the assembly groove 2, and corresponding adapter holes are also arranged on the base 14 of the pull-gate assembly corresponding to the three fixing holes 13. The lock seat 1 can be completely fixed on the base of the pull-gate assembly by fasteners such as screws. The installation method is simple and detachable, which is convenient for subsequent maintenance and repair work.

[0043] It should be noted that the diameter of the fixing hole 13 on the lower side of the bottom of the assembly groove 2 is larger than the diameter of the fixing holes 13 on both sides of the notch of the assembly groove 2, and a second fixing hole 15 is provided on the upper side of the base 14 of the pull-gate assembly, and the second fixing hole 15 is located above the gate seat 11. The fixing hole 13 on the lower side of the bottom of the assembly groove 2 and the second fixing hole 15 are mainly used to fix the pull-gate assembly on the surface of the switch cabinet or the electric cabinet, and specifically, the pull-gate assembly is fixed to the electric cabinet by fasteners such as screws.

[0044] It should also be noted that after the lock catch seat 1 is installed on the shutter assembly, the rotation radius of the lock rod 6 will be slightly larger than the radius of the shutter seat 11, so that the lock rod 6 will not interfere with the shutter seat 11 during rotation.

[0045] like Figure 5 As shown, the shutter assembly is in the upper position, and the electrical cabinet is in normal power-on working state. At this time, the locking rod 6 is rotated to a horizontal state, that is, the plane where the locking rod 6 is located is perpendicular to the base 14 of the shutter assembly. At this time, the pull rod 12 is in the upper position. In normal working state, in order to prevent the pull rod 12 from falling due to gravity or external environmental factors (such as equipment vibration or human accidental touch), the locking rod 6 needs to be locked in the position shown in the figure. Specifically, by rotating the knob 92 of the lock buckle 9, the telescopic rod 10 is extended to prevent the locking rod 6 from falling; and even if the pull rod 12 falls, it will only fall to the middle position and stop state, thereby improving the safety index of the equipment. When the shutter assembly needs to be switched to the middle position, it is only necessary to pull the pull rod 12 downward and rotate it until it abuts against the locking rod 6, as shown in the figure. Figure 6 At this time, the lock rod 6 is still in the locked limit state, and the lock rod 6 can prevent the pull rod 12 from being pulled down excessively and entering the lower gear state, thereby preventing the three gears of the electric cabinet from being continuously moved and damaging the equipment.

[0046] like Figure 7As shown, the shutter assembly is in the lower gear state, and the lower gear state needs to be switched from the middle gear. Specifically, by rotating the knob 92 of the lock buckle 9, the telescopic rod 10 is retracted. At this time, the downward limit of the lock rod 6 is released, and the lock rod 6 automatically falls under the action of gravity (including the gravity of the limit piece 7) and rotates until the plane of the lock rod 6 is parallel or nearly parallel to the bottom surface of the lock buckle seat 1. At this time, the pull rod 12 can be pulled to switch to the lower gear of the shutter assembly.

[0047] Embodiment 3: In this embodiment, the use of the lock in Embodiment 1 and Embodiment 2 is specifically described.

[0048] Specifically, a hand-operated switch lock of an electric cabinet is arranged on a low-voltage cabinet, and the low-voltage cabinet has the above-mentioned three states of upper gear, middle gear and lower gear. The gear switching of the low-voltage cabinet is controlled by the lock 9 and the lock rod 6. In actual application, this scheme is used for interlocking between the low-voltage cabinet and the high-voltage cabinet. Similarly, the same lock 9 structure is arranged on the high-voltage cabinet to control the state of the high-voltage cabinet; and the lock structure on the high-voltage cabinet and the low-voltage cabinet is the same, that is, the knob 92 structure on the high-voltage cabinet and the low-voltage cabinet is common (shared).

[0049] In actual use, in order to prevent the electricity user from feeding self-generated electricity back to the main power grid when generating electricity, the high-voltage cabinet and the low-voltage main cabinet need to be interlocked. Therefore, only one knob 92 structure is provided for use with the low-voltage cabinet and the high-voltage cabinet.

[0050] Under normal working conditions, when the low voltage cabinet is in the upper gear working state, the high voltage cabinet is also in the open working state, and the knob 92 shared by the lock buckles 9 on the two cabinets is located on the high voltage cabinet. The knob 92 on the lock buckle 9 on the corresponding high voltage cabinet can only be removed when the high voltage cabinet is closed and disconnected.

[0051] When the low-voltage cabinet needs to perform the power generation operation in the lower gear, the corresponding high-voltage cabinet must be closed. Specifically, first put the high-voltage cabinet in the closed and disconnected state, then remove the knob 92 on the lock buckle 9 on the high-voltage cabinet, and then match the knob 92 to the lock buckle 9 of the low-voltage cabinet, and turn the knob 92 to retract the telescopic rod 10 in the lock buckle 9, so that the limit of the lock rod 6 is released, and then the pull rod 12 on the low-voltage cabinet pull-gate seat 11 can be pulled down to the lower gear to perform power generation operation.

[0052] When the low-voltage cabinet no longer needs to generate electricity, pull the pull rod 12 up to the upper gear position for normal working state, then lock the lock rod 6, remove the knob 92, and then put the knob 92 back on the lock buckle 9 of the high-voltage cabinet to reopen the high-voltage cabinet.

[0053] This solution uses two locks 9 to share one key to ensure the safety of the operation, so that when the low-voltage cabinet is generating electricity, the high-voltage cabinet is in a closed and disconnected state.

Claims

1. A manual switch lock for an electric cabinet, characterized in that: It includes a lock seat, which is provided with an assembly groove, and opposite first and second side plates are provided on both sides of the assembly groove and at one end of the assembly groove of the lock seat, and opposite first through holes are provided on the first side plate and the second side plate, and a "X"-shaped locking rod is rotatably connected between the two first through holes, and a limiting plate is provided on the side of the locking rod close to the second side plate.

2. The electric cabinet hand-pull switch lock according to claim 1 is characterized in that: The height of the second side plate is greater than that of the first side plate. A second through hole is provided on the second side plate. The second through hole is located higher than the first through hole and is located on the side of the notch of the first through hole away from the assembly groove.

3. The electric cabinet hand-pull switch lock according to claim 1 is characterized in that: The limiting piece is a fan-shaped structure, and the fan-shaped angle of the limiting piece is 87° to 93°.

4. The electric cabinet hand-pull switch lock according to claim 3 is characterized in that: The limiting piece is located at a side away from the lock seat when the lock rod rotates.

5. The electric cabinet hand-pull switch lock according to claim 2 is characterized in that: The second through hole is provided with a lock buckle, and the lock buckle is provided with a telescopic rod which can pass through the second through hole.

6. The electric cabinet hand-pull switch lock according to any one of claims 1 to 5, characterized in that: It also includes a shutter assembly, which includes a shutter seat, the shutter seat is adapted to the assembly groove, and the locking seat is fixedly connected to the shutter seat.

7. The electric cabinet hand-pull switch lock according to claim 6 is characterized in that: The gate seat is rotatably connected with a pull rod.

8. The electric cabinet hand-pull switch lock according to claim 6 is characterized in that: The gate seat is semicircular in shape, and the rotation radius of the locking rod is adapted to the radius of the gate seat.

9. The electric cabinet hand-pull switch lock according to claim 6 is characterized in that: The lock catch seat is provided with a fixing hole, and the lock catch seat is detachably connected to the gate seat through the fixing hole.

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