A quick-locking device for a pole-mounted circuit breaker

Abstract

The utility model discloses a quick locking device for pole circuit breaker, this quick locking device for pole circuit breaker includes the mounting support and the circuit breaker body of being equipped with on it, the both sides of mounting support are equipped with the movable plate of horizontal slide, be equipped with the fastener for fixing it on movable plate, movable plate is equipped with the shaft seat in the place of being close to its both sides, be equipped with the locking axle of axially movable in the shaft seat, locking axle is equipped with eccentric cam. Form the counter wedge tightness of counter -top through long diameter department and opposite locking groove, produce pre -tightening force and eliminate the fit clearance, build the constraint of multipoint stress, restrain the vibration displacement of circuit breaker body, this structure converts rotary motion into linear locking force and realizes self -lock, ensure the stable connection, and the operator can complete locking or unlocking through manual rotation, need not tool, simplify the installation maintenance process, and this structure has high integration, and the parts are few, reduce manufacturing cost and failure rate, improve product reliability and environmental adaptability.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, and in particular to a quick locking device for pole-mounted circuit breakers. Background Technology

[0002] A circuit breaker is a switching device that can close, carry, and interrupt current under normal circuit conditions and can close, carry, and interrupt current under abnormal circuit conditions within a specified time. Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers, and are widely used in power distribution networks, both indoors and outdoors, and are selected according to requirements.

[0003] Existing pole-mounted circuit breakers require a large number of bolts to connect and fix them to the mounting brackets on the utility pole during installation. This is not only time-consuming and labor-intensive, but also reduces installation efficiency and makes disassembly and maintenance difficult. Therefore, the applicant has made a beneficial design and found a solution to the above problems. The technical solution to be introduced below was developed in this context. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the traditional pole-mounted circuit breaker design and to provide a product with high assembly and disassembly efficiency, convenient operation, and high adaptability.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A quick-locking device for a pole-mounted circuit breaker includes a mounting bracket and a circuit breaker body mounted thereon. The mounting bracket has horizontally slidable movable plates on both sides, and fasteners for fixing the breaker body are provided on the movable plates. The movable plates have bearing seats near their sides, and each bearing seat contains an axially movable locking shaft. The locking shaft has an eccentric cam. The circuit breaker body has mounting portions on both sides, each mounting portion having clearance holes for the eccentric cam to pass through, and locking grooves that mate with the long diameter portion of the eccentric cam. The locking grooves on the same side are arranged opposite each other.

[0007] Preferably, the mounting bracket has guide grooves on both sides, the movable plate slides with the mounting bracket through the guide grooves, the guide grooves have rectangular mounting holes, and the fasteners pass through the rectangular mounting holes.

[0008] Preferably, it further includes a first clamp and a second clamp for fixing the mounting bracket to the utility pole, the second clamp being hinged to the mounting bracket via a diagonal bar.

[0009] Preferably, the movable plate is provided with a vertically arranged support portion, and the support portion is provided with a positioning countersunk hole for accommodating the bearing seat.

[0010] Preferably, the fastener is a fastening screw or a fastening bolt.

[0011] Preferably, the locking groove is disposed on one side of the relief hole, the diameter of the locking groove is smaller than that of the relief hole, and a guide slope is provided at the connection between the locking groove and the relief hole.

[0012] Preferably, the end of the locking shaft is provided with an operating handle.

[0013] Preferably, the end face of the bearing seat is provided with a cavity for accommodating the eccentric cam.

[0014] Beneficial effects:

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] (1) This utility model achieves mechanical interlocking between the circuit breaker body and the mounting bracket through the synergistic effect of the eccentric cam and the locking groove. During the rotation of the eccentric cam, its long diameter part and the oppositely arranged locking groove form a wedge-tightening effect, generating a pre-tightening force, eliminating the fit gap, constructing a multi-point force constraint, and effectively suppressing the relative displacement trend under vibration environment. The locking structure converts the rotational motion into a linear locking force, forming a self-locking function to ensure the connection state is stable for a long time. This design simplifies the installation and disassembly process. The operator only needs to manually rotate to complete the locking or unlocking, eliminating the need for auxiliary tools, greatly shortening the on-site operation time, and improving the convenience and efficiency of equipment maintenance. In addition, the structure has a high degree of integration and a small number of parts, which helps to reduce manufacturing costs and failure points, and enhance the overall reliability and environmental adaptability of the product.

[0017] (2) This utility model achieves stepless adjustment of the lateral span of the mounting bracket by sliding the movable plate horizontally, thereby being compatible with circuit breaker bodies of various specifications and sizes. This design gives the product a high degree of adaptability and flexibility, and can meet the installation needs of different application scenarios. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of a quick-locking device for a pole-mounted circuit breaker according to the present invention;

[0019] Figure 2 This is a side cross-sectional view of a quick-locking device for a pole-mounted circuit breaker according to the present invention.

[0020] Figure 3 This is a partial cross-sectional view of a quick-locking device for a pole-mounted circuit breaker according to the present invention. Figure 1 ;

[0021] Figure 4 This utility model Figure 3A partial enlarged view A of a quick-locking device for a pole-mounted circuit breaker;

[0022] Figure 5 This is a partial cross-sectional view of a quick-locking device for a pole-mounted circuit breaker according to the present invention. Figure 2 ;

[0023] Figure 6 This utility model Figure 5 A partial enlarged view (B) of a quick-locking device for a pole-mounted circuit breaker;

[0024] Figure 7 This is an exploded view of the quick-locking device for a pole-mounted circuit breaker according to the present invention.

[0025] Figure 8 This utility model Figure 7 A partial enlarged view (C) of a quick-locking device for a pole-mounted circuit breaker;

[0026] The correspondence between the labels and component names in the attached figures is as follows:

[0027] Reference numerals: 1. Mounting bracket; 2. Circuit breaker body; 3. Movable plate; 4. Fastener; 5. Shaft seat; 6. Locking shaft; 7. First clamp; 8. Second clamp; 9. Diagonal bar; 11. Guide groove; 12. Rectangular mounting hole; 21. Mounting part; 22. Clearance hole; 23. Locking groove; 24. Guide slope; 31. Support part; 32. Positioning countersunk hole; 61. Eccentric cam; 62. Long diameter part; 63. Operating handle. Detailed Implementation

[0028] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In this embodiment of the utility model, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0031] Reference example Figures 1 to 8 A quick-locking device for a pole-mounted circuit breaker includes a mounting bracket 1 and a circuit breaker body 2 mounted thereon. The mounting bracket 1 has horizontally sliding movable plates 3 on both sides, and fasteners 4 for fixing them are provided on the movable plates 3. The movable plates 3 have bearing seats 5 near their sides, and the bearing seats 5 have axially movable locking shafts 6. The locking shafts 6 have eccentric cams 61. The circuit breaker body 2 has mounting portions 21 on both sides, and the mounting portions 21 have clearance holes 22 for the eccentric cams 61 to pass through, and locking grooves 23 that cooperate with the long diameter portion 62 of the eccentric cams 61. The locking grooves 23 on the same side are arranged opposite each other.

[0032] Through the synergistic action of the eccentric cam 61 and the locking groove 23, the mechanical interlock between the circuit breaker body 2 and the mounting bracket 1 is achieved. During the rotation of the eccentric cam 61, its long diameter portion 62 and the oppositely arranged locking groove 23 form a wedge-tightening effect, generating a preload force, eliminating the fit clearance, and constructing a multi-point force constraint to effectively suppress the relative displacement trend under vibration. This locking structure converts rotational motion into linear locking force, forming a self-locking function to ensure a long-term stable connection. This design simplifies the installation and disassembly process. The operator only needs to manually rotate the cam to lock or unlock, eliminating the need for auxiliary tools, greatly shortening on-site operation time, and improving the convenience and efficiency of equipment maintenance. Furthermore, the structure has a high degree of integration and a small number of parts, which helps to reduce manufacturing costs and failure points, and enhance the overall reliability and environmental adaptability of the product.

[0033] It is worth mentioning that the mounting bracket 1 has guide grooves 11 on both sides. The movable plate 3 slides with the mounting bracket 1 through the guide grooves 11. The guide grooves 11 have rectangular mounting holes 12. The fasteners 4 pass through the rectangular mounting holes. The guide grooves 11 provide precise linear motion guidance for the movable plate 3, ensuring the coaxiality and parallelism of the movable plate 3 during the sliding process. The rectangular mounting holes 12, together with the fasteners 4, limit the range of motion of the movable plate 3. After the movable plate 3 is adjusted to the predetermined position, the movable plate 3 is fixed in the predetermined position by tightening the fasteners 4. The horizontal sliding of the movable plate 3 realizes the stepless adjustment of the lateral span of the mounting bracket 1, thereby being compatible with circuit breaker bodies 2 of various specifications and sizes. This design makes the product highly adaptable and flexible, and can meet the installation needs of different application scenarios.

[0034] It is worth mentioning that it also includes a first clamp 7 and a second clamp 8 for fixing the mounting bracket 1 to the utility pole, the second clamp 8 being hinged to the mounting bracket 1 via a diagonal bar 9;

[0035] It is worth mentioning that the movable plate 3 is provided with a vertically arranged support part 31, and the support part 31 is provided with a positioning countersunk hole 32 for accommodating the bearing seat 5. The design of the support part 31 and the positioning countersunk hole 32 provides the bearing seat 5 with a precise positioning reference and a stable mechanical support.

[0036] It is worth mentioning that fastener 4 is set as a fastening screw or a fastening bolt;

[0037] It is worth mentioning that the locking groove 23 is set on one side of the relief hole 22. The diameter of the locking groove 23 is smaller than that of the relief hole 22. A guide slope 24 is provided at the connection between the locking groove 23 and the relief hole 22. The diameter of the relief hole 22 is larger than that of the locking groove 23, which provides the necessary space for the eccentric cam 61 to pass through. The diameter of the locking groove 23 is smaller than that of the relief hole 22, which ensures that when the eccentric cam 61 rotates, its long diameter part 62 can form an interference or transition fit with it to generate the required locking force. The guide slope 24 at the connection plays a key guiding role. It can smoothly guide the long diameter part 62 into the locking groove 23 when the eccentric cam 61 rotates, reduce the operating torque, and avoid wear or jamming caused by sharp corner collision.

[0038] It is worth mentioning that the end of the locking shaft 6 is provided with an operating handle 63. The operating handle 63 increases the lever arm, which allows the operator to drive the locking shaft 6 to rotate with a smaller torque, reducing the operating intensity and improving convenience.

[0039] It is worth mentioning that the end face of the bearing seat 5 is provided with a chamber 51 for accommodating the eccentric cam 61. The chamber provides space for the axial retraction of the locking shaft 6, ensuring that the locking shaft 6 is completely retracted into the contour of the movable plate 3. This design ensures that when the movable plate 3 is adjusting its lateral position, its locking shaft 6 part does not interfere with the circuit breaker body 2 or other components, thereby ensuring that the movable plate 3 can move smoothly along the guide groove 11.

[0040] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A quick-locking device for a pole-mounted circuit breaker, comprising a mounting bracket (1) and a circuit breaker body (2) disposed thereon, characterized in that: The mounting bracket (1) has horizontally sliding movable plates (3) on both sides, and the movable plates (3) are provided with fasteners (4) for fixing them. The movable plate (3) is provided with bearing seats (5) near its two sides, and the bearing seats (5) are provided with axially movable locking shafts (6), and the locking shafts (6) are provided with eccentric cams (61); The circuit breaker body (2) has mounting portions (21) on both sides. The mounting portions (21) have clearance holes (22) for the eccentric cam (61) to pass through, and locking grooves (23) that cooperate with the long diameter portion (62) of the eccentric cam (61). The locking grooves (23) on the same side are arranged opposite to each other.

2. The quick-locking device for pole-mounted circuit breakers according to claim 1, characterized in that: The mounting bracket (1) has guide grooves (11) on both sides. The movable plate (3) slides with the mounting bracket (1) through the guide grooves (11). The guide grooves (11) have rectangular mounting holes (12). The fastener (4) passes through the rectangular mounting holes.

3. The quick-locking device for pole-mounted circuit breakers according to claim 1, characterized in that: It also includes a first clamp (7) and a second clamp (8) for fixing the mounting bracket (1) to the utility pole, the second clamp (8) being hinged to the mounting bracket (1) by a diagonal bar (9).

4. The quick-locking device for pole-mounted circuit breakers according to claim 1, characterized in that: The movable plate (3) is provided with a vertically arranged support part (31), and the support part (31) is provided with a positioning countersunk hole (32) for accommodating the bearing seat (5).

5. The quick-locking device for pole-mounted circuit breakers according to claim 1, characterized in that: The fastener (4) is configured as a fastening screw or a fastening bolt.

6. The quick-locking device for pole-mounted circuit breakers according to claim 1, characterized in that: The locking groove (23) is provided on one side of the relief hole (22). The diameter of the locking groove (23) is smaller than that of the relief hole (22). A guide slope (24) is provided at the connection between the locking groove (23) and the relief hole (22).

7. The quick-locking device for pole-mounted circuit breakers according to claim 1, characterized in that: The locking shaft (6) is provided with an operating handle (63) at its end.

8. The quick-locking device for pole-mounted circuit breakers according to claim 1, characterized in that: The end face of the bearing seat (5) is provided with a chamber (51) for accommodating the eccentric cam (61).

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