Electric operation mechanism of reclosing circuit breaker

Abstract

The utility model relates to an electric operation mechanism of a reclosing circuit breaker, which comprises a base, a gate body is fixedly connected in the base, a rotating rod is rotatably connected in the base, a closing knife is fixedly connected on the outer surface of the rotating rod, and an electric operation assembly is arranged in the base. According to the electric operation mechanism of the reclosing circuit breaker, when a switch-on switch and a gate body are switched on and electrified, a motor is started to drive a gear connected with a sleeve to be in meshing transmission with a rack plate, so that the rack plate drives a moving rod to move downwards, and a connecting rod drives a rotating rod hinged to a poke rod to do arc-shaped motion with a rotating column as the circle center; the closing switch blade connected with the rotating rod is inserted into the gate body for closing and electrifying; when power-off opening is needed, the motor is started to rotate reversely, so that the rack plate moves upwards, the switch-on switch connected with the rotating rod is driven to be separated from the gate body, the quick opening effect can be achieved, and the effect is more thorough during switch-on and switch-off.

Description

Technical Field

[0001] The utility model relates to the technical field of reclosing circuit breakers, in particular to an electric operating mechanism of a reclosing circuit breaker. Background Art

[0002] Small circuit breakers are widely used in low-voltage power consumption areas such as commercial, residential, and industrial production. Since ordinary small circuit breakers need to be manually closed after tripping or opening to continue power supply, and even in the low-voltage power consumption area, the voltage of the power transmitted is much higher than the safety voltage for the human body. Therefore, there is undoubtedly a safety hazard in that ordinary small circuit breakers need to be manually closed after tripping or opening.

[0003] The gear transmission system of existing products is designed with a fixed stroke and poor fault tolerance, so a few units will have problems with poor opening and closing in batch products. In actual use, the operating life of the electric operating mechanism is insufficient. After a period of use, the gears may break or the circuit breaker may not close properly. Therefore, an electric operating mechanism for a reclosing circuit breaker is proposed to solve the above problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an electric operating mechanism for a reclosing circuit breaker, which has the advantages of adopting a gear rack closing method to avoid the situation where the operating rod is not fully closed, etc., and solves the problem that during the closing process of the prior reclosing circuit breaker, the electric operating mechanism adopts a gear transmission system design, the electric operating mechanism is not fully closed, and the opening and closing state is unstable.

[0005] To achieve the above object, the utility model provides the following technical solution: an electric operating mechanism of a reclosing circuit breaker, comprising a base, a gate body is fixedly connected to the inside of the base, a rotating rod is rotatably connected to the inside of the base, a closing knife is fixedly connected to the outer surface of the rotating rod, and an electric operating assembly is arranged inside the base;

[0006] The electric operation component includes a motor, which is fixedly connected to the inside of the base, one end of the motor output shaft is fixedly connected to a sleeve, the left side of the sleeve is fixedly connected to a gear, two springs are fixedly connected to the inside of the base, the two springs are fixedly connected to the same rack plate on opposite sides, the gear and the rack plate are meshed for transmission, the inside of the base is fixedly connected to a limiting block, the left side of the rack plate is fixedly connected to a moving rod, the top of the moving rod is fixedly connected to a connecting rod, the front side of the connecting rod is hinged with a toggle rod, and the toggle rod is hinged to the rotating rod.

[0007] Furthermore, a motor bracket is fixedly connected inside the base, and the motor is fixedly connected to the inside of the base through the motor bracket.

[0008] Furthermore, a rotating column is fixedly connected to the interior of the base, and the rotating rod rotates inside the base through the rotating column. A closing groove is opened inside the gate body, and the closing knife is located inside the gate body through the closing groove.

[0009] Furthermore, a fastening screw is passed through the interior of the sleeve, and the sleeve is fixedly connected to the output shaft of the motor through the fastening screw. A limiting groove is provided inside the limit block, and the rack plate slides inside the limit block through the limiting groove.

[0010] Furthermore, the movable rod is in the shape of a rectangular rod, the interior of the base is fixedly connected to a limiting plate, a sliding through slot is provided inside the limiting plate, and the connecting rod slides inside the limiting plate through the sliding through slot.

[0011] Furthermore, the connecting rod is in the shape of an L-shaped rod, a rotating rod hole is provided inside the connecting rod, and the connecting rod is hinged to the toggle rod through the rotating rod hole.

[0012] Furthermore, a fixing column is fixedly connected to the front side of the rotating rod, and the toggle rod is hinged to the rotating rod via the fixing column.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] 1. The electric operating mechanism of the reclosing circuit breaker, when the closing knife is closing and energizing the gate body, the gear connected to the sleeve is driven by the starting motor to mesh with the rack plate, so that the rack plate drives the moving rod to move downward, and the connecting rod drives the rotating rod hinged to the toggle rod to make an arc movement with the rotating column as the center, so that the closing knife connected to the rotating rod is inserted into the inside of the gate body to close and energize; when it is necessary to cut off the power and open the gate, the rack plate is moved upward by starting the motor to rotate in the opposite direction, driving the closing knife connected to the rotating rod to separate from the gate body, so as to achieve the effect of rapid opening, thereby solving the problem of closing and opening more thoroughly.

[0015] 2. The electric operating mechanism of the reclosing circuit breaker is provided with springs on both the upper and lower sides of the rack plate, so that when the rack plate is limited by the limit block, the springs on both sides can play the role of elastic limitation when it moves up and down, ensuring that the rack plate is more stable during the movement, paving the way for subsequent closing and opening of the gate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the main cross-sectional view of the structure of the utility model;

[0017] Figure 2 This is a top view of the rack plate and the limit block of the utility model structure;

[0018] Figure 3It is a three-dimensional diagram of the structural limiting plate of the utility model.

[0019] In the figure: 1. base; 2. gate body; 3. rotating column; 4. rotating rod; 5. closing knife; 6. motor; 7. sleeve; 8. gear; 9. spring; 10. rack plate; 11. limit block; 12. moving rod; 13. connecting rod; 14. toggle rod; 15. limit plate; 16. sliding groove. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-3 In this embodiment, an electric operating mechanism of a reclosing circuit breaker includes a base 1, a gate body 2 is fixedly connected to the inside of the base 1, a rotating rod 4 is rotatably connected to the inside of the base 1, a rotating column 3 is fixedly connected to the inside of the base 1, the rotating rod 4 rotates inside the base 1 through the rotating column 3, a closing knife 5 is fixedly connected to the outer surface of the rotating rod 4, a closing groove is opened inside the gate body 2, the closing knife 5 is located inside the gate body 2 through the closing groove, and an electric operating component is arranged inside the base 1.

[0022] The electric operation component includes a motor 6, which is fixedly connected to the inside of the base 1. The inside of the base 1 is fixedly connected with a motor bracket, and the motor 6 is fixedly connected to the inside of the base 1 through the motor bracket.

[0023] One end of the output shaft of the motor 6 is fixedly connected with a sleeve 7 , a fastening screw is passed through the interior of the sleeve 7 , and the sleeve 7 is fixedly connected to the output shaft of the motor 6 via the fastening screw.

[0024] A gear 8 is fixedly connected to the left side of the sleeve 7, two springs 9 are fixedly connected inside the base 1, and the same rack plate 10 is fixedly connected to the opposite side of the two springs 9. The gear 8 is meshed with the rack plate 10 for transmission, and a limiting groove is provided inside the limit block 11, and the rack plate 10 slides inside the limit block 11 through the limiting groove.

[0025] The base 1 is internally fixedly connected to a limiting block 11, the left side of the rack plate 10 is fixedly connected to a moving rod 12, the moving rod 12 is in the shape of a rectangular rod, the top of the moving rod 12 is fixedly connected to a connecting rod 13, the base 1 is internally fixedly connected to a limiting plate 15, the limiting plate 15 is provided with a sliding groove 16, and the connecting rod 13 slides inside the limiting plate 15 through the sliding groove 16.

[0026] A toggle rod 14 is hinged on the front of the connecting rod 13 . The connecting rod 13 is in the shape of an L-shaped rod. A rotating rod hole is provided inside the connecting rod 13 . The connecting rod 13 is hinged to the toggle rod 14 through the rotating rod hole.

[0027] The toggle rod 14 is hinged to the rotating rod 4 , and a fixing column is fixedly connected to the front side of the rotating rod 4 , and the toggle rod 14 is hinged to the rotating rod 4 via the fixing column.

[0028] In this embodiment, springs 9 are provided on the upper and lower sides of the rack plate 10, so that when the rack plate 10 is limited by the limit block 11, the springs 9 on both sides can play a role of elastic limitation when moving up and down, thereby ensuring that the rack plate 10 is more stable during movement and paving the way for subsequent closing and opening of the gate.

[0029] In this embodiment, by providing the limiting plate 15 and the limiting through slot 16, the limiting plate 15 can play a guiding role when the moving rod 13 moves up and down, ensuring that the rotating rod 4 swings more smoothly.

[0030] The working principle of the above embodiment is:

[0031] The electric operating mechanism of the reclosing circuit breaker, when the closing knife 5 is closing and energizing the gate body 2, the gear 8 connected to the sleeve 7 is driven by the starting motor 6 to mesh with the rack plate 10, so that the rack plate 10 drives the moving rod 12 to move downward, and the connecting rod 13 drives the rotating rod 4 hinged to the toggle rod 14 to make an arc movement with the rotating column 3 as the center, so that the closing knife 5 connected to the rotating rod 4 is inserted into the inside of the gate body 2 for closing and energizing; when it is necessary to cut off the power and open the gate, the rack plate 10 is moved upward by starting the motor 6 to rotate in the opposite direction, driving the closing knife 5 connected to the rotating rod 4 to separate from the gate body 2, so as to achieve the effect of rapid opening, thereby solving the problem of closing and opening more thoroughly.

[0032] It should be noted that the standard parts used in the application can be purchased from the market, special-shaped parts can be customized according to the description in the specification and drawings, and the specific connection methods of each part adopt mature bolts, rivets, welding, etc. in the prior art, and conventional means. Machinery, parts and equipment all adopt conventional models in the prior art; plus the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric operating mechanism for a reclosing circuit breaker, comprising a base (1), characterized in that: The base (1) is fixedly connected to a gate body (2), the base (1) is rotatably connected to a rotating rod (4), the outer surface of the rotating rod (4) is fixedly connected to a closing knife (5), and an electric operating component is arranged inside the base (1); The electric operation component comprises a motor (6), the motor (6) is fixedly connected inside the base (1), one end of the output shaft of the motor (6) is fixedly connected to a sleeve (7), the left side of the sleeve (7) is fixedly connected to a gear (8), the inside of the base (1) is fixedly connected to two springs (9), the opposite side of the two springs (9) is fixedly connected to the same rack plate (10), the gear (8) and the rack plate (10) are meshed for transmission, the inside of the base (1) is fixedly connected to a limit block (11), the left side of the rack plate (10) is fixedly connected to a moving rod (12), the top of the moving rod (12) is fixedly connected to a connecting rod (13), the front side of the connecting rod (13) is hinged to a toggle rod (14), and the toggle rod (14) is hinged to a rotating rod (4).

2. The electric operating mechanism of a reclosing circuit breaker according to claim 1, characterized in that: A motor bracket is fixedly connected to the interior of the base (1), and the motor (6) is fixedly connected to the interior of the base (1) via the motor bracket.

3. The electric operating mechanism of a reclosing circuit breaker according to claim 1, characterized in that: A rotating column (3) is fixedly connected to the interior of the base (1); the rotating rod (4) rotates inside the base (1) via the rotating column (3); a closing groove is provided inside the gate body (2); and the closing knife (5) is located inside the gate body (2) via the closing groove.

4. The electric operating mechanism of a reclosing circuit breaker according to claim 1, characterized in that: A fastening screw is inserted into the interior of the sleeve (7), and the sleeve (7) is fixedly connected to the output shaft of the motor (6) via the fastening screw. A limiting groove is provided inside the limiting block (11), and the rack plate (10) slides inside the limiting block (11) via the limiting groove.

5. The electric operating mechanism of a reclosing circuit breaker according to claim 1, characterized in that: The movable rod (12) is in the shape of a rectangular rod. The base (1) is fixedly connected to a limiting plate (15) inside. A sliding groove (16) is provided inside the limiting plate (15). The connecting rod (13) slides inside the limiting plate (15) through the sliding groove (16).

6. The electric operating mechanism of a reclosing circuit breaker according to claim 1, characterized in that: The connecting rod (13) is in the shape of an L-shaped rod, a rotating rod hole is provided inside the connecting rod (13), and the connecting rod (13) is hinged to the toggle rod (14) through the rotating rod hole.

7. The electric operating mechanism of a reclosing circuit breaker according to claim 1, characterized in that: The front side of the rotating rod (4) is fixedly connected to a fixing column, and the toggle rod (14) is hinged to the rotating rod (4) via the fixing column.

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