Anti-misoperation safety protection device for low-voltage circuit breaker

Abstract

The invention provides an anti-misoperation safety protection device for a low-voltage circuit breaker, which relates to the technical field of power distribution cabinets and comprises a low-voltage power distribution cabinet, a circuit breaker is mounted on a back plate of the low-voltage power distribution cabinet, a fixing part is mounted on the side wall of the low-voltage power distribution cabinet, a sliding rod is fixedly connected to one side of the fixing part, and a wiring bar is slidably mounted on the outer wall of the sliding rod. The low-voltage power distribution cabinet comprises a low-voltage power distribution cabinet body, a power connection wire bar and a fixing part, the power connection wire bar is installed on the side wall of the low-voltage power distribution cabinet body and elastically matched with the fixing part, and the power connection wire bar is clamped and matched with the power connection wire bar lock catch assembly through a clamping rod fixedly connected with the side wall of the low-voltage power distribution cabinet body. The clamping rod on the wiring bar is inserted into the bar lock catch assembly for insertion and fixation, so that the power-on of the circuit breaker is limited, and no danger is generated even if mistaken touch occurs; the clamping rod abuts against the lock catch to rotate, and the abutting piece abuts against the lock catch under the action of the second torsion spring, so that rotation of the lock catch is limited.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution cabinets, and in particular to a safety protection device for preventing misoperation of a low-voltage circuit breaker. Background Art

[0002] The distribution cabinet is divided into power distribution cabinet, lighting distribution cabinet and metering cabinet. The distribution cabinet is used in the occasions with dispersed load and fewer circuits; the motor control center is used in the occasions with concentrated load and more circuits. They distribute the electric energy of a circuit of the upper-level distribution equipment to the nearest load, and are the final equipment in the field of power distribution system safety technology. The power supply circuit of the distribution cabinet generally uses a low-voltage circuit breaker. During the use of this low-voltage circuit breaker, you only need to move the handle up and down to disconnect and connect the low-voltage power supply circuit as needed. These low-voltage circuit breakers generally have no protective devices. During maintenance or operation, it is easy to touch the circuit breaker due to misoperation and trigger the power supply circuit, which has certain risks. In the field of power system safety technology, the prevention of misoperation emphasizes five aspects (referred to as "five preventions"), namely, preventing the misoperation and misclosing of circuit breakers (switches); preventing the opening and closing of isolating switches with load; preventing the hanging (closing) of grounding wires (grounding switches) with power on; preventing the power supply with grounding wires; preventing the mistaken entry into the live interval. At present, due to technical reasons, there are only suggestive measures, and there is no effective technical means to prevent the misoperation of circuit breakers. When operators are operating the power distribution cabinet, they may sometimes accidentally operate the circuit breaker due to negligence, which may cause power outages of normally operating equipment and threaten the safe and stable operation of the power grid.

[0003] Therefore, we have made improvements to effectively prevent the misoperation of circuit breakers, so as to improve the safety and stability level of power grid operation and maintenance management, and proposed a low-voltage circuit breaker anti-misoperation safety protection device. Summary of the invention

[0004] The object of the present invention is to provide a safety protection device for preventing misoperation of a low-voltage circuit breaker. The circuit breaker is installed on the back plate of a low-voltage distribution cabinet by design, and a fixing part is also installed on the side wall of the low-voltage distribution cabinet. A sliding rod is fixedly connected to one side of the fixing part, and a wiring row is slidably installed on the outer wall of the sliding rod. The wiring row and the fixing part are elastically matched to automatically cut off the power, thereby reducing the risk of electric shock caused by misoperation of the power supply.

[0005] In order to achieve the above-mentioned object of the invention, the present invention provides a low-voltage circuit breaker anti-misoperation safety protection device, which also includes:

[0006] The wire row lock assembly is installed on the side wall of the low-voltage power distribution cabinet, and the wire row is engaged with the wire row lock assembly through a clamping rod fixedly connected to the side wall;

[0007] The power socket is fixedly installed on the side wall of the low-voltage distribution cabinet and arranged corresponding to the wire row. When the wire row is inserted into the power socket along the sliding rod, the circuit breaker is in the power-on state. When the wire row is engaged with the wire row locking assembly along the sliding rod, the circuit breaker is in the power-off state.

[0008] As a preferred technical solution of the present invention, a vent is provided on the side wall of the low-voltage distribution cabinet, a cooling fan is installed at the vent, and an air outlet fence is also provided on the outer wall of the low-voltage distribution cabinet along the vent.

[0009] As a preferred technical solution of the present invention, the cooling fan is provided with a temperature sensor, and if the temperature exceeds the set temperature, ventilation and heat dissipation are automatically started.

[0010] As a preferred technical solution of the present invention, a return spring is fixedly connected to the side wall of the wiring bank, and one end of the return spring is fixedly connected to a fixing member.

[0011] As a preferred technical solution of the present invention, the wiring busbar includes a card frame with a built-in copper busbar, the side wall of the card frame is provided with an insertion port, the front of the card frame is threadedly connected with a positioning bolt, the positioning bolt is used to contact the copper busbar with the wire, the copper busbar located at the top is connected to the positive electrode post, the copper busbar located at the bottom is connected to the negative electrode post, a sliding hole is provided in the middle of the card frame, and the card frame is slidably installed on the outer wall of the slide rod through the sliding hole.

[0012] As a preferred technical solution of the present invention, the power socket includes a plug with a slot, the plug is connected to the power supply device through a guide, the inner wall of the plug has two metal springs, and the metal springs have elastic potential energy to expand outward after being squeezed to fit the positive electrode post and the negative electrode post.

[0013] As a preferred technical solution of the present invention, the wire row lock assembly includes a support frame, and the side walls of the support frame are rotatably connected with a lock and a resistance member. When the locking rod resists the lock, the lock can be driven to flip so that the resistance member is embedded in the bottom of the lock to limit the rotation of the lock.

[0014] As a preferred technical solution of the present invention, the circuit breaker anti-misoperation locking device also includes a local unlocking device, and the local unlocking device is used to perform a local unlocking operation on the mechanical locking mechanism.

[0015] As a preferred technical solution of the present invention, the side wall of the lock is provided with a resistance screw 1, the outer wall of the support frame is provided with a rotating shaft 1 and a resistance screw 2, the rotating shaft 1 is provided with a torsion spring 1, and the torsion spring 1 is in resistance cooperation with the resistance screw 1 and the resistance screw 2.

[0016] As a preferred technical solution of the present invention, the side wall of the resistance member is provided with a resistance screw rod three, the side wall of the support frame is provided with a rotating shaft rod two and a resistance screw rod four, the outer wall of the rotating shaft rod two is provided with a torsion spring rod two, the torsion spring rod two is in resistance with the resistance screw rod three and the resistance screw rod four, and the side wall of the support frame is provided with an empty groove for the movement of the resistance screw rod one and the resistance screw rod three.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention is provided with a low-voltage power distribution cabinet, a fixing part, a sliding rod, a wire row, a wire row locking assembly and a power socket. The wire row is connected to the circuit breaker. When power is required, the wire row is plugged into the power socket to achieve electrical connection. When power is required to be disconnected for maintenance, the clamping rod on the wire row is plugged into the wire row locking assembly for plugging and fixing, thereby limiting the power supply of the circuit breaker. The mechanical mechanism used in this device has high reliability, good repeatability, strong adaptability and is easy to maintain. Even if an accidental touch occurs, no danger will occur.

[0019] 2. When the clamping rod of the present invention is inserted into the line row lock assembly, it first contacts the lock, and the lock rotates. The abutment contacts the lock under the action of the second torsion spring, thereby limiting the rotation of the lock. At this time, the line row cannot be pulled out, which can effectively prevent misjudgment during operation and cause accidents that threaten personnel safety and power grid stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the three-dimensional structure of a low-voltage circuit breaker anti-misoperation safety protection device provided by the present invention;

[0021] Figure 2 A schematic diagram of the main structure of a low-voltage circuit breaker anti-misoperation safety protection device provided by the present invention;

[0022] Figure 3 A low voltage circuit breaker anti-misoperation safety protection device provided by the present invention Figure 1 The enlarged structural diagram at A in the middle;

[0023] Figure 4 A schematic diagram of the structure of a locking state of a wire row lock assembly of a low-voltage circuit breaker anti-misoperation safety protection device provided by the present invention;

[0024] Figure 5 A schematic diagram of the structure of a wiring bar in a low-voltage circuit breaker anti-misoperation safety protection device provided by the present invention;

[0025] Figure 6 A schematic diagram of the partial structure of a center line lock assembly of a low voltage circuit breaker anti-misoperation safety protection device provided by the present invention;

[0026] Figure 7 A low voltage circuit breaker anti-misoperation safety protection device provided by the present invention Figure 6 A schematic diagram of the second perspective structure;

[0027] Figure 8 The present invention provides a schematic structural diagram of an electrical socket in a low-voltage circuit breaker anti-misoperation safety protection device.

[0028] Indicated in the figure:

[0029] 1. Low voltage distribution cabinet; 11. Fan;

[0030] 2. Circuit breaker;

[0031] 3. Fixing parts;

[0032] 4. Slide bar;

[0033] 5. Wire connection bar; 51. Reset spring; 52. Card holder; 53. Insertion port; 54. Positioning bolt; 55. Positive electrode post; 56. Negative electrode post;

[0034] 6. Wire row lock assembly; 61. Support frame; 62. Lock; 63. Conflict piece; 64. Conflict screw rod 1; 65. Rotating shaft 1; 66. Conflict screw rod 2; 67. Torsion spring; 68. Conflict screw rod 3; 69. Rotating shaft 2; 610. Torsion spring rod 2; 611. Conflict screw rod 4;

[0035] 7. Clamp rod;

[0036] 8. Electrical socket; 81. Plug; 82. Metal reed. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "longitudinal" and the like should be understood in a broad sense, for example: it can be fixedly connected; it can also be detachably connected; or integrated; it can be mechanically connected; it can also be electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0040] See also Figures 1 to 8 The present invention provides a technical solution: a low-voltage circuit breaker anti-misoperation safety protection device, comprising a low-voltage distribution cabinet 1, a circuit breaker 2 is installed on the back plate of the low-voltage distribution cabinet 1, a fixing member 3 is installed on the side wall of the low-voltage distribution cabinet 1, a sliding rod 4 is fixedly connected to one side of the fixing member 3, a connection wire row 5 is slidably installed on the outer wall of the sliding rod 4, and the connection wire row 5 is elastically matched with the fixing member 3, and also includes:

[0041] The wire row lock assembly 6 is installed on the side wall of the low-voltage power distribution cabinet 1, and the wire row 5 is connected to the clamping rod 7 fixedly connected to the side wall and is engaged with the wire row lock assembly 6;

[0042] The power socket 8 is fixedly installed on the side wall of the low-voltage distribution cabinet 1 and arranged corresponding to the wire row 5. When the wire row 5 is inserted into the power socket 8 along the sliding rod 4, the circuit breaker 2 is in a power-on state. When the wire row 5 is engaged with the wire row locking assembly 6 along the sliding rod 4, the circuit breaker 2 is in a power-off state.

[0043] As a preferred embodiment, on the basis of the above-mentioned method, further, ventilation holes are opened on both sides of the side walls of the low-voltage distribution cabinet 1, and a cooling fan 11 is installed at the ventilation hole on one side. An air outlet fence is also provided along the ventilation hole on the outer wall of the low-voltage distribution cabinet 1, and the air outlet fence can protect the cooling fan 11. The cooling fan 11 is connected to the power supply using wires.

[0044] A return spring 51 is fixedly connected to the side wall of the wire block 5, one end of which is fixedly connected to the fixing member 3. The return spring 51 has elastic potential energy when squeezed, so that after unlocking, it automatically pushes the wire block 5 to connect with the power socket 8 to power on.

[0045] As a preferred embodiment, on the basis of the above-mentioned method, further, the wire connection bus 5 includes a bracket 52 with a built-in copper bus, the side wall of the bracket 52 is provided with an insertion port 53, the front of the bracket 52 is threadedly connected with a positioning bolt 54, the positioning bolt 54 is used to contact the copper bus with the wire, the upper copper bus is connected with a positive pole 55, the lower copper bus is connected with a negative pole 56, the middle of the bracket 52 is provided with a sliding hole, the bracket 52 is slidably installed on the outer wall of the slide rod 4 through the sliding hole, the wire is inserted into the insertion port 53, and the positioning bolt 54 is rotated to lock the wire, thereby achieving the purpose of fixing the wire.

[0046] The power socket 8 includes a plug 81 with a slot, and the plug 81 is connected to the power supply device through a guide. The inner wall of the plug 81 has two metal springs 82. After being squeezed, the metal springs 82 have elastic potential to expand outward to fit the positive electrode post 55 and the negative electrode post 56. The advantage of using the metal springs 82 is that they can fit tightly to achieve the purpose of electrical connection.

[0047] As a preferred embodiment, on the basis of the above-mentioned method, further, the line row locking buckle assembly 6 includes a support frame 61, and the side walls of the support frame 61 are rotatably connected with a lock buckle 62 and a resistance member 63 respectively. When the clamping rod 7 resists the lock buckle 62, the lock buckle 62 can be driven to flip so that the resistance member 63 is embedded in the bottom of the lock buckle 62 to limit the rotation of the lock buckle 62. Specifically, the middle part of the lock buckle 62 has a clamping groove, the bottom has a limiting groove, and the resistance member 63 has a resistance arm, which can be inserted into the limiting groove to limit the rotation of the lock buckle 62. In the locked state, if the clamping rod 7 is directly pulled out, the lock buckle 62 and the resistance member 63 will only be locked more tightly. When unlocking is required, the resistance member 63 can only be disengaged after the lock buckle 62 rotates inward.

[0048] The side wall of the lock buckle 62 is provided with a resistance screw rod 1 64, the outer wall of the support frame 61 is provided with a rotating shaft 1 65 and a resistance screw rod 2 66, and a torsion spring 1 67 is mounted on the rotating shaft 1 65. The torsion spring 1 67 is in resistance with the resistance screw rod 1 64 and the resistance screw rod 2 66, and the torsion spring 1 67 can provide elastic potential energy for the lock buckle 62.

[0049] The side wall of the resistance member 63 is provided with a resistance screw rod 3 68, the side wall of the support frame 61 is provided with a rotating shaft 2 69 and a resistance screw rod 4 611, the outer wall of the rotating shaft 2 69 is provided with a torsion spring 2 610, the torsion spring 2 610 is in contact with the resistance screw rod 3 68 and the resistance screw rod 4 610, the side wall of the support frame 61 is provided with an empty groove for the movement of the resistance screw rod 1 64 and the resistance screw rod 3 68, the torsion spring 2 610 can provide elastic potential energy for the resistance member 63.

[0050] Example 1:

[0051] When the low-voltage circuit breaker anti-misoperation safety protection device is working / in use: first open the low-voltage distribution cabinet 1, observe the connection status of the wiring row and the circuit breaker, when power is needed, the wiring row 5 can be plugged into the power socket 8 to achieve electrical connection. When plugging, the positive pole 55 and the negative pole 56 are plugged into the plug 81 and can contact the metal spring 82. When the clamping rod 7 is plugged into the wiring row lock assembly 6, it first contacts the lock 62, and the lock 62 rotates. The contact member 63 contacts the lock 62 under the action of the torsion spring 611, thereby limiting the rotation of the lock 62. At this time, the wiring row 5 cannot be pulled out, and the wiring row 5 slides on the slide bar 4 to ensure the stability of the wiring row 5. When the extrusion force is lost, the reset spring 51 provides elastic potential energy, thereby pushing the wiring row 5 to move to the power-on state. When the low-voltage distribution cabinet 1 is in operation, the airflow can also be intersected by the fan 11, thereby reducing the temperature inside the low-voltage distribution cabinet 1.

[0052] Example 2:

[0053] The low-voltage circuit breaker anti-misoperation safety protection device is used during maintenance: when the power is turned off for maintenance, first open the low-voltage distribution cabinet 1, observe the working status of the wiring row and the circuit breaker, first observe whether the positive pole 55 and the negative pole 56 are plugged into the plug 81, and insert the clamping rod 7 on the wiring row 5 into the wiring row locking assembly 6 for plugging and fixing, thereby limiting the circuit breaker from being powered on, and no danger will occur even if an accidental touch occurs.

[0054] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. A low voltage circuit breaker anti-misoperation safety protection device, comprising a low voltage distribution cabinet (1), characterized in that: A circuit breaker (2) is provided on the back side of the low-voltage distribution cabinet (1), a fixing member (3) is provided on the side wall of the low-voltage distribution cabinet (1), a sliding rod (4) is provided on one side of the fixing member (3), a connection wire row (5) is slidably connected to the outer wall of the sliding rod (4), the connection wire row (5) is slidably connected to the fixing member (3), a wire row locking assembly (6) is provided on the side wall of the connection wire row (5), and the wire row locking assembly (6) is fixedly connected to the low-voltage distribution cabinet (1) on a side away from the connection wire row (5). The wiring row (5) is clamped with the row locking assembly (6) via a clamping rod (7) fixedly connected to the side wall; power sockets (8) are provided at the front sides of the upper and lower ends of the wiring row (5); the power sockets (8) are fixedly connected to the low-voltage power distribution cabinet (1); when the wiring row (5) is inserted into the power sockets (8) along the sliding rod (4), the circuit breaker (2) is in a power-on state; when the wiring row (5) is clamped with the row locking assembly (6) along the sliding rod (4), the circuit breaker (2) is in a power-off state.

2. A low voltage circuit breaker anti-misoperation safety protection device according to claim 1, characterized in that: A vent is provided on a side wall of the low-voltage power distribution cabinet (1), a cooling fan (11) is provided at the vent, and an air outlet fence is also provided on the outer wall of the cooling fan (11) along the vent.

3. A low voltage circuit breaker anti-misoperation safety protection device according to claim 2, characterized in that: A return spring (51) is provided on the side wall of the wiring row (5), and one end of the return spring (51) is fixedly connected to the fixing member (3).

4. A low voltage circuit breaker anti-misoperation safety protection device according to claim 3, characterized in that: The wiring bus (5) is provided with a bracket (52) with a built-in copper busbar, the side wall of the bracket (52) is provided with an insertion port (53), the front surface of the bracket (52) is threadedly connected with a positioning bolt (54), the positioning bolt (54) is used to contact the copper busbar with the wire, the copper busbar located at the top is connected with a positive pole pole (55), and the copper busbar located at the bottom is connected with a negative pole pole (56), a sliding hole is provided in the middle of the bracket (52), and the bracket (52) is slidably mounted on the outer wall of the slide rod (4) through the sliding hole.

5. A low voltage circuit breaker anti-misoperation safety protection device according to claim 2 or 3, characterized in that: The power socket (8) is provided with a plug (81) having a slot, the plug (81) being connected to the power supply device through a guide, the inner side wall of the plug (81) having two metal springs (82), the metal springs (82) having elastic potential energy to expand outwards after being squeezed so as to fit the positive electrode post (55) and the negative electrode post (56).

6. A low voltage circuit breaker anti-misoperation safety protection device according to claim 5, characterized in that: The line row lock buckle assembly (6) is provided with a support frame (61), and a lock buckle (62) and a resisting member (63) are provided on a side wall of the support frame (61). When the clamping rod (7) resists the lock buckle (62), the lock buckle (62) can be driven to flip so that the resisting member (63) is embedded in the bottom of the lock buckle (62) to limit the rotation of the lock buckle (62).

7. A low voltage circuit breaker anti-misoperation safety protection device according to claim 6, characterized in that: The lock buckle (62) is provided with a first contact screw (64) on the other side of the support frame (61); a first rotating shaft (65) is provided at the lower end of the first contact screw (64); a second contact screw (66) is provided on the right side of the first rotating shaft (65); a first torsion spring (67) is sleeved on the first rotating shaft (65); the first torsion spring (67), the first contact screw (64), the first rotating shaft (65) and the second contact screw (66) form a contact fit.

8. A low voltage circuit breaker anti-misoperation safety protection device according to claim 6 or 7, characterized in that: The resistance member (63) is provided with a resistance screw rod 3 (68) on the other side of the support frame (61), and a resistance screw rod 4 (611) is provided on the lower side of the resistance screw rod 3 (68). A rotating shaft 2 (69) is provided on the right side of the resistance screw rod 3 (68) and the resistance screw rod 4 (611). The torsion spring 2 (610), the resistance screw rod 3 (68), the rotating shaft 2 (69) and the resistance screw rod 4 (611) form a resistance fit, and a side wall of the support frame (61) is provided with an empty groove for the resistance screw rod 1 (64) and the resistance screw rod 3 (68) to move.

9. A low voltage circuit breaker anti-misoperation safety protection device according to claim 8, characterized in that: The surfaces of the support frame (61), the lock buckle (62) and the abutment member (63) are provided with an anti-corrosion coating.

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