Locking structure of circuit breaker electric operating device

Abstract

The utility model discloses a breaker electric operation device locking structure comprising a housing, a breaker tripping shaft and a pull rod abutting against the breaker tripping shaft, one side of the pull rod is fixedly provided with a rack, the rack is engaged with a linkage tooth, the linkage tooth is linked with a tooth rotating wheel through a gear assembly, and the tooth rotating wheel is engaged with the rack. According to the electric control device, the tooth rotating wheel, the linkage tooth and the rack are designed, the tooth portion of the tooth rotating wheel protrudes out of the surface of the shell, then the tooth rotating wheel is linked with the linkage tooth, the rack drives the pull rod to move, the position of the tripping shaft of the circuit breaker is locked, and the locking structure of the electric control device is optimized; the possibility of damage to the locking structure is greatly reduced, and the service life of the locking structure is prolonged. Through the arrangement of the ratchet bar, the limiting teeth and the positioning rod, in the process that the pull rod moves along with the rack, the limiting teeth can be matched with all ratchets on the ratchet bar, the locking effect on the pull rod is guaranteed, and locking is not only conducted after movement is completed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of circuit breaker technology, specifically relates to the locking structure for circuit breaker electric operating device. BACKGROUND

[0002] The circuit breaker is an electrical equipment which plays an important protection role in the circuit, controls the on-off of the circuit through the opening and closing, in the actual use, at the same time, the electric operating device is used to control the action of opening and closing, and the electric operating device is provided with the locking structure to avoid the problem of injury caused by accidental touch in the maintenance process.

[0003] The prior art, such as Chinese patent "202121290047.8", provides a kind of thing networking circuit breaker locking device, including shell and the locking assembly being set in shell, locking assembly includes the pull rod being movably arranged in the through hole of shell and being matched with circuit breaker trip shaft, lock hole is set on the one end of pull rod, the other end of pull rod is provided with the lock hook body matched with circuit breaker trip shaft, lock hook body is pulled with pull rod and can be resisted on circuit breaker trip shaft, realize the locking of circuit breaker.Most of locking structures exist pull rod part, when locking, pull rod part needs to be pulled out of shell, cooperate with padlock use, and the part of pull rod extending out of shell is easily deformed and damaged under the action of external force, finally, affect the use of entire electric operating device. UTILITY MODEL CONTENTS

[0004] The utility model provides circuit breaker electric operating device locking structure in view of the problem of most of locking structures in background art exist pull rod part, when locking, pull rod part needs to be pulled out of shell, cooperate with padlock use, and the part of pull rod extending out of shell is easily deformed and damaged under the action of external force, finally, affect the use of entire electric operating device.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: circuit breaker electric operating device locking structure, including shell, circuit breaker trip shaft and the pull rod being resisted with circuit breaker trip shaft, gear rack is fixed on one side of the pull rod, the gear rack is engaged together with linkage gear, linkage gear is linked together with gear assembly and gear wheel through gear assembly, and the edge of gear wheel protrudes from shell, locking assembly is arranged on the other side of the pull rod.

[0006] As a further supplementary explanation of the above technical scheme, the gear assembly includes driven gear and driving gear, the driven gear is engaged together with linkage gear, at the same time, the driven gear is engaged together with driving gear, and the driving gear is coaxially installed with gear wheel.

[0007] As further explanation and limitation of the above technical solution, the linkage tooth, the driven tooth and the driving tooth are located inside the partition plate, the linkage tooth, the driven tooth and the driving tooth rotate respectively on the linkage shaft, the driven shaft and the main shaft, and the spacing between the linkage shaft, the driven shaft and the main shaft and the shell gradually decreases.

[0008] As further supplementary explanation of the above technical solution, the locking assembly comprises a ratchet bar, a positioning rod, a limiting tooth and a torsion spring, the ratchet bar is connected to the pull rod through a spring, a limiting tooth is fixed at one end of the positioning rod, the limiting tooth rotates with the positioning rod and can abut on the ratchet bar to lock the ratchet bar, the positioning rod is connected to the shell through the torsion spring, and the torsion spring makes the positioning rod keep a tendency of counterclockwise rotation.

[0009] As further explanation and limitation of the above technical solution, a wrench is fixed at one end of the positioning rod.

[0010] As further explanation and limitation of the above technical solution, a half-moon column is integrally formed on the contact surface between the wrench and the shell, and a matching limiting groove is formed on the shell.

[0011] As further supplementary explanation of the above technical solution, baffles are arranged on both sides of the gear rotating wheel, and the baffles are fixed on the shell.

[0012] As further supplementary explanation of the above technical solution, the pull rod is penetrated by a guide rod, and the guide rod is fixed on the shell through a nut.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] 1. The gear rotating wheel, the linkage tooth and the rack are designed, the tooth part of the gear rotating wheel protrudes from the surface of the shell, then the gear rotating wheel is linked with the linkage tooth, the rack drives the pull rod to move, the position of the trip shaft of the circuit breaker is locked, the locking structure of the electric control device is optimized, the possibility of damage of the locking structure is greatly reduced, and the service life of the locking structure is improved.

[0015] 2. Through the arrangement of the ratchet bar, the limiting tooth and the positioning rod, the limiting tooth can cooperate with each tooth on the ratchet bar during the movement of the pull rod along the rack, so that the locking effect of the pull rod is ensured, and the pull rod is not simply locked after the movement is completed. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a perspective view of an embodiment of the utility model;

[0017] Fig. 2 It is an exploded structural view of a gear assembly of an embodiment of the utility model;

[0018] Fig. 3The utility model discloses an explosion schematic view of the wrench and the shell.

[0019] Fig. 4 The utility model discloses an explosion schematic view of the wrench and the shell.

[0020] Fig. 5 The utility model discloses an explosion schematic view of the wrench and the shell.

[0021] In the drawing: 1, shell;101, baffle;102, guide rod;2, circuit breaker release shaft;3, pull rod;4, rack;5, linkage tooth;501, linkage shaft;6, gear assembly;601, driven tooth;602, driving tooth;603, driven shaft;604, main shaft;7, gear wheel;8, locking assembly;801, ratchet rack;802, positioning rod;803, limit tooth;804, torsional spring;805, spring;806, wrench;807, half moon column;808, limit slot;9, partition plate. DETAILED DESCRIPTION

[0022] In order to further set forth the technical scheme of the utility model, below combining with the attached Figs. 1 to 5 , the utility model is further explained in detail through three embodiments.

[0023] Embodiment one

[0024] As shown in the attached Figs. 1 to 2 , circuit breaker electric operating device locking structure, including shell 1, circuit breaker release shaft 2 and with circuit breaker release shaft 2 resistance touch's pull rod 3, in pull rod 3 one side fixed with rack 4, rack 4 and linkage tooth 5 are engaged together, linkage tooth 5 passes through gear assembly 6 and generates linkage with gear wheel 7, and gear wheel 7 edge protrudes shell 1, and pull rod 3 another side is provided with locking assembly 8.

[0025] Embodiment two

[0026] In order to guarantee the accuracy of linkage tooth 5 and gear wheel 7 linkage, as shown in the attached Fig. 2 , gear assembly 6 includes driven tooth 601 and driving tooth 602, driven tooth 601 and linkage tooth 5 are engaged together, and simultaneously, driven tooth 601 and driving tooth 602 are engaged together, and driving tooth 602 is coaxially installed with gear wheel 7.

[0027] Further, linkage tooth 5, driven tooth 601 and driving tooth 602 are located inside partition plate 9, linkage tooth 5, driven tooth 601 and driving tooth 602 rotate respectively in linkage shaft 501, driven shaft 603 and main shaft 604, and the spacing of linkage shaft 501, driven shaft 603 and main shaft 604 gradually decreases with shell 1, guarantee that gear wheel 7 can protrude shell 1.

[0028] Embodiment three

[0029] In order to fix the position of the pull rod 3 after it moves, as shown in the figure, the locking assembly 8 comprises a ratchet bar 801, a positioning rod 802, a limiting tooth 803 and a torsion spring 804. The ratchet bar 801 is connected to the pull rod 3 through a spring 805. The limiting tooth 803 is fixed at one end of the positioning rod 802. The limiting tooth 803 rotates with the positioning rod 802 and can abut against the ratchet bar 801 to lock the ratchet bar 801. The positioning rod 802 is connected to the shell 1 through the torsion spring 804. The torsion spring 804 keeps the positioning rod 802 in a tendency of counterclockwise rotation. Fig. 3 In order to facilitate the rotation of the positioning rod 802, as shown in the figure, a wrench 806 is fixed at one end of the positioning rod 802.

[0030] Fig. 4 In order to fix the position of the positioning rod 802 after it rotates, as shown in the figure, a half-moon column 807 is integrally formed on the contact surface between the wrench 806 and the shell 1. A limiting groove 808 is formed on the shell 1. The half-moon column 807 is embedded in the limiting groove 808 to fix the position.

[0031] In order to prevent foreign matters from entering the inside of the shell 1, as shown in the figure, baffles 101 are arranged on both sides of the toothed wheel 7. The baffles 101 are fixed on the shell 1. Fig. 4 In order to make the pull rod 3 move perpendicularly to the inner wall of the shell 1, as shown in the figure, the pull rod 3 is penetrated by a guide rod 102. The guide rod 102 is fixed on the shell 1 through a nut.

[0032] The working principle is as follows:

[0033] Fig. 5 After the circuit breaker is opened, first, the toothed wheel 7 is rotated clockwise on the surface of the shell 1. The toothed wheel 7 drives the main shaft 604 to rotate, so that the driving teeth 602 rotate synchronously. Then, the driving teeth 602 drive the linkage teeth 5 through the driven teeth 601. Thus, the pull rod 3 is driven to move upward along the guide rod 102 by the rack 4 until the pull rod 3 abuts against the trip shaft 2 of the circuit breaker. At the same time, the ratchet bar 801 moves upward with the pull rod 3. The ratchet bar 801 is pressed by the inclined surface of the limiting tooth 803. When the pressing force of the inclined surface of the limiting tooth 803 disappears, the spring 805 resets the ratchet bar 801. When the pull rod 3 abuts against the trip shaft 2 of the circuit breaker, the position of the pull rod 3 is locked by the abutment between the horizontal surface of the limiting tooth 803 and the horizontal surface of the ratchet bar 801.

[0034] Fig. 5

[0035]

[0036]

[0037] ​​​​​​When the circuit breaker needs to be closed, first, rotate the positioning rod 802 clockwise by the wrench 806, so that the half moon column 807 is embedded in another limiting slot 808, at the same time, the limiting teeth 803 are rotated clockwise with the positioning rod 802, and the limiting effect of the limiting teeth 803 on the ratchet bar 801 is released, then rotate the gear wheel 7 counterclockwise, so that the pull rod 3 moves downward along the guide rod 102, until the pull rod 3 cannot block the circuit breaker trip shaft 2 to complete the closing, then adjust the position of the positioning rod 802 counterclockwise, so that the limiting teeth 803 cooperate with the ratchet bar 801 again, and lock the position of the pull rod 3.

[0038] The main features and advantages of the present application are shown and described above, for those skilled in the art, it is obvious that the specific embodiments of the present application are not limited to the details of the above exemplary embodiments, and the inventive idea and design idea of the present application can be realized in other specific forms without departing from the spirit or basic characteristics of the present application, which should be equivalent to the protection scope disclosed in the technical scheme of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.

[0039] In addition, it should be understood that although the present application is described in the form of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A locking structure of an electric operating device of a circuit breaker, comprising a housing (1), a circuit breaker trip shaft (2) and a pull rod (3) in contact with the circuit breaker trip shaft (2), characterized in that: A rack (4) is fixed on one side of the pull rod (3), the rack (4) is engaged with the linkage gear (5), the linkage gear (5) is linked with the gear assembly (6) and the gear wheel (7), the gear wheel (7) is protruded from the shell (1), and a locking assembly (8) is arranged on the other side of the pull rod (3).

2. The circuit breaker motor operator lockout arrangement of claim 1, wherein: The gear assembly (6) comprises a driven gear (601) and a driving gear (602), the driven gear (601) is engaged with the linkage gear (5), and the driven gear (601) is engaged with the driving gear (602), and the driving gear (602) is coaxially installed with the gear wheel (7).

3. The circuit breaker motor operator lockout arrangement of claim 2, wherein: The linkage gear (5), the driven gear (601) and the driving gear (602) are located inside the partition plate (9), the linkage gear (5), the driven gear (601) and the driving gear (602) rotate with the linkage shaft (501), the driven shaft (603) and the main shaft (604) respectively, and the spacing between the linkage shaft (501), the driven shaft (603) and the main shaft (604) and the shell (1) gradually decreases.

4. The circuit breaker motor operator lockout arrangement of claim 1, wherein: The locking assembly (8) comprises a ratchet rack (801), a positioning rod (802), a limiting tooth (803) and a torsional spring (804), the ratchet rack (801) is connected to the pull rod (3) through the spring (805), the limiting tooth (803) is fixed at one end of the positioning rod (802), the limiting tooth (803) rotates with the positioning rod (802) and can abut on the ratchet rack (801) to lock the ratchet rack (801), the positioning rod (802) is connected to the shell (1) through the torsional spring (804), and the torsional spring (804) makes the positioning rod (802) keep counterclockwise rotation.

5. The circuit breaker motor operator lockout arrangement of claim 4, wherein: A wrench (806) is fixed at one end of the positioning rod (802).

6. The circuit breaker motor operator lockout arrangement of claim 5, wherein: A half moon column (807) is integrally formed on the contact surface between the wrench (806) and the shell (1), and a matching limiting groove (808) is formed in the shell (1).

7. The circuit breaker motor operator lockout arrangement of any one of claims 1 to 6, characterized by: A baffle (101) is arranged on both sides of the gear wheel (7), and the baffle (101) is fixed on the shell (1).

8. The circuit breaker motor operator lockout arrangement of any one of claims 1 to 7, characterized by: The pull rod (3) is penetrated by a guide rod (102), and the guide rod (102) is fixed on the shell (1) through a nut.

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