Pole-mounted circuit breaker

Abstract

The utility model discloses a pole-mounted circuit breaker. The pole-mounted circuit breaker comprises a mounting rack, a circuit breaker body and a circuit breaker body, the elastic mechanism is arranged between the mounting frame and the circuit breaker body, the elastic mechanism comprises a sleeve, a supporting column and an elastic telescopic air bag, the circuit breaker body is arranged on the supporting column, and the elastic telescopic air bag is arranged between the inner wall surface of the sleeve and the peripheral surface of the supporting column in a surrounding mode. When the telegraph pole vibrates, the sleeve generates radial instantaneous movement, then the elastic telescopic air bag is driven to move instantaneously, the elastic telescopic air bag is extruded by the supporting column and generates elastic force on the supporting column, and therefore the supporting column is driven to swing slowly, and the situation that the supporting column generates instantaneous movement due to vibration of the telegraph pole is avoided; therefore, connection looseness and fracture of internal components caused by vibration of the circuit breaker body or fatigue damage and aging in the components are avoided, and the service life and reliability of the circuit breaker body are prevented from being affected.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a pole-mounted circuit breaker. Background Art

[0002] A pole-mounted circuit breaker is a circuit breaker installed and operated on an electric pole. It is a high-voltage power distribution equipment used to automatically cut off the current of the power system in the event of a fault such as an overload or short circuit, so as to prevent overload and short circuit from occurring and protect equipment and lines from damage. Existing pole-mounted circuit breakers are fixed on the poles through mounting brackets. Due to the high installation height of the pole-mounted circuit breaker and the possibility that the pole may vibrate due to environmental or mechanical factors. Short-term vibrations, such as mechanical collisions or earthquakes, may cause the connection of components inside the circuit breaker to loosen or break, or even cause deformation or damage to tiny structures, thereby affecting its performance and reliability. Long-term vibrations, such as the continuous wind force on the poles or the vibration of nearby machines, may cause fatigue damage or aging inside the components, which will also affect their lifespan and reliability. Therefore, a pole-mounted circuit breaker is proposed. Utility Model Content

[0003] The purpose of the utility model is to provide a pole-mounted circuit breaker to solve the above-mentioned technical problems.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] A pole mounted circuit breaker, comprising:

[0006] Mounting frame;

[0007] A circuit breaker body is arranged on the mounting frame;

[0008] An elastic mechanism is arranged between the mounting frame and the circuit breaker body, the elastic mechanism comprises a sleeve fixedly arranged on the mounting frame, a support column arranged in the sleeve and an elastic telescopic airbag, the circuit breaker body is arranged on the support column, the elastic telescopic airbag surrounds between the inner wall surface of the sleeve and the outer peripheral surface of the support column, so that the support column is subjected to the elastic force of the elastic telescopic airbag in the radial direction.

[0009] Optionally, air holes for inflating and deflation of the elastic telescopic airbag are provided on the side wall of the sleeve.

[0010] Optionally, the elastic mechanism further includes a fixing plate arranged on the mounting frame and a supporting plate arranged on the supporting column, the sleeve is arranged on the mounting frame through the fixing plate, and the circuit breaker body is arranged on the supporting column through the supporting plate.

[0011] Optionally, a first through hole is provided on the fixing plate, and a first threaded hole corresponding to the first through hole is provided on one end of the support column close to the fixing plate.

[0012] Optionally, a second through hole is provided on the support plate, and a second threaded hole corresponding to the second through hole is provided on one end of the support column close to the support plate.

[0013] Optionally, an outer edge is provided at one end of the support column close to the fixing plate, a groove is provided on the fixing plate, and an outer edge groove corresponding to the outer edge is provided on the bottom wall surface of the groove.

[0014] Optionally, the diameter of the circle formed by the outer edge is greater than the diameter of the groove, and the diameter of the outer groove is greater than the diameter of the circle formed by the outer edge.

[0015] Optionally, the mounting frame includes a clamp and a support frame connected to the clamp.

[0016] Compared with the prior art, the utility model has the following beneficial effects: when installing the pole-mounted circuit breaker, the circuit breaker body and the elastic mechanism are fixedly installed on the electric pole through the mounting frame, and the elastic telescopic airbag is inflated. When the electric pole vibrates, the sleeve generates radial instantaneous movement, thereby driving the elastic telescopic airbag to move instantaneously, and the elastic telescopic airbag is squeezed by the support column and generates elastic force on the support column, thereby driving the support column to swing slowly, avoiding the instantaneous movement of the support column due to the vibration of the electric pole, thereby avoiding the loosening and breaking of the connection of the internal components caused by the vibration of the circuit breaker body, or fatigue damage and aging of the components, which affect the life and reliability of the circuit breaker body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0019] Figure 1It is a structural schematic diagram of a pole-mounted circuit breaker of the utility model;

[0020] Figure 2 It is an exploded view of the pole mounted circuit breaker of the utility model;

[0021] Figure 3 It is a cross-sectional view of the fixing plate of the present utility model.

[0022] Illustrations: 10. Mounting frame; 11. Clamp; 12. Support frame; 20. Circuit breaker body; 30. Elastic mechanism; 31. Sleeve; 32. Support column; 321. First threaded hole; 33. Elastic telescopic airbag; 34. Fixing plate; 341. Groove; 342. Outer groove; 343. First through hole; 35. Support plate; 351. Second through hole; 36. Outer edge; 37. Air hole. DETAILED DESCRIPTION

[0023] In order to make the purpose, features and advantages of the invention of the utility model more obvious and easy to understand, the technical scheme in the embodiment of the utility model will be clearly and completely described below in combination with the drawings in the embodiment of the utility model. Obviously, the embodiment described below is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of 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.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0025] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0026] Reference Figures 1 to 3The embodiment of the utility model provides a pole-mounted circuit breaker, including a mounting frame 10, a circuit breaker body 20, and an elastic mechanism 30. The mounting frame 10 includes a clamp 11 and a support frame 12 connected to the clamp 11, the clamp 11 is fixedly mounted on the electric pole, and the support frame 12 is fixedly connected to the clamp 11. Optionally, the support frame 12 is fixedly connected to the clamp 11 by welding. The elastic mechanism 30 is arranged on the support frame 12, and the circuit breaker body 20 is arranged on the elastic mechanism 30, that is, the elastic mechanism 30 is arranged between the mounting frame 10 and the circuit breaker body 20. The elastic mechanism 30 includes a sleeve 31 fixedly arranged on the support frame 12, a support column 32 arranged in the sleeve 31, and an elastic telescopic airbag 33. The elastic and telescopic airbag 33 is arranged on the inner wall of the sleeve 31, and the elastic and telescopic airbag 33 surrounds the inner wall surface of the sleeve 31 and the outer peripheral surface of the support column 32, so that the support column 32 is subjected to the elastic force of the elastic and telescopic airbag 33 in the radial direction, and by inflating the elastic and telescopic airbag 33, the elastic and telescopic airbag 33 generates a radial supporting force on the support column 32, so that the support column 32 is fixed in the sleeve 31. When the support column 32 is fixed in the sleeve 31, the axis of the support column 32 is on the same straight line as the axis of the sleeve 31. The circuit breaker body 20 is fixedly mounted on the support column 32. When the electric pole vibrates and drives the mounting frame 10 to vibrate, the support column 32 slowly swings under the elastic force of the elastic telescopic airbag 33, thereby preventing the support column 32 from instantaneously moving due to the vibration of the electric pole, thereby preventing the connection of internal components from being loosened or broken due to the vibration of the circuit breaker body 20, or preventing fatigue damage and aging inside the components, which affects the life and reliability of the circuit breaker body 20.

[0027] It should be noted that, in general, the vibration of the utility pole is mainly radial vibration, that is, vibration along the radius of the utility pole. This radial vibration can be caused by external wind, mechanical collision, airflow and other external factors. In contrast, axial vibration (vibration along the axis of the utility pole) is relatively small or even almost non-existent, because the structural design of the utility pole will give it a relatively high rigidity in the axial direction, thereby reducing the possibility of axial vibration. Therefore, the purpose of the utility model is mainly to avoid the influence of the radial vibration of the utility pole on the circuit breaker body 20.

[0028] It should be further explained that the elastic telescopic airbag 33 is a flexible capsule (made of materials with high elasticity, such as rubber, polyurethane, etc.) filled with compressed air, and the elastic effect is achieved by using the compressibility of air. In this embodiment, in the absence of external force, the elastic telescopic airbag 33 is filled with air, and the space between the sleeve 31 and the support column 32 is filled with gas pressure, thereby keeping the support column 32 relatively immobile in the sleeve 31. This is because the gas inside the elastic telescopic airbag 33 has very low compressibility, which can produce a certain rigidity, so that the support column 32 is stable in the sleeve 31; when the electric pole is vibrated by external force, the sleeve 31 will vibrate accordingly. Due to its high elasticity, the elastic telescopic airbag 33 will provide a certain elastic buffer when the sleeve 31 vibrates, thereby reducing the vibration directly transmitted to the support column 32 and the circuit breaker body 20, that is, the elasticity of the elastic telescopic airbag 33 can absorb part of the vibration energy and reduce the impact of vibration on the internal components of the circuit breaker body 20.

[0029] Optionally, the side wall of the sleeve 31 is provided with air holes 37 for the elastic and telescopic airbag 33 to be inflated and deflated.

[0030] The elastic mechanism 30 further includes a fixing plate 34 disposed on the mounting frame 10 and a supporting plate 35 disposed on the supporting column 32, the sleeve 31 is disposed on the mounting frame 10 through the fixing plate 34, and the circuit breaker body 20 is disposed on the supporting column 32 through the supporting plate 35. Optionally, the fixing plate 34 is fixed to the supporting frame 12 by bolt connection, the sleeve 31 is integrally formed with the fixing plate 34 or detachably connected; the circuit breaker body 20 is fixed to the supporting plate 35 by bolt connection, and the supporting column 32 is integrally formed with the supporting plate 35 or detachably connected. Optionally, when the supporting column 32 is detachably connected to the supporting plate 35, a second through hole 351 is provided on the supporting plate 35, and a second threaded hole corresponding to the second through hole 351 is provided at one end of the supporting column 32 close to the supporting plate 35. That is, the supporting column 32 is bolted to the supporting plate 35.

[0031] An outer edge 36 is provided at one end of the support column 32 close to the fixing plate 34, and a groove 341 is provided on the fixing plate 34. An outer edge groove 342 corresponding to the outer edge 36 is provided on the bottom wall surface of the groove 341. The support column 32 is embedded in the fixing plate 34, so that the support column 32 cannot move in the axial direction, so as to increase the stability of the support column 32, and further increase the stability of the column-mounted circuit breaker.

[0032] It should be noted that the diameter of the outer groove 342 is larger than the diameter of the circle formed by the outer edge 36, so that the support column 32 can move smoothly in the radial direction; the diameter of the circle formed by the outer edge 36 is larger than the diameter of the groove 341, so that the support column 32 cannot be separated from the fixing plate 34 when moving in the radial direction.

[0033] The fixing plate 34 is provided with a first through hole 343, and one end of the support column 32 close to the fixing plate 34 is provided with a first threaded hole 321 corresponding to the first through hole 343. When the support column 32 is connected to the fixing plate 34 by bolts, the support column 32 is fixedly connected to the fixing plate 34 to facilitate the transportation of the pole-mounted circuit breaker of the utility model and to prevent the circuit breaker body 20 from shaking on the mounting frame 10 during transportation. After the pole-mounted circuit breaker of the utility model is installed, the bolts can be removed.

[0034] It should be noted that the type of the circuit breaker body can be a 10kV circuit breaker, or a low-voltage circuit breaker or a high-voltage circuit breaker, all of which are within the protection scope of the present invention.

[0035] The utility model discloses a pole-mounted circuit breaker, and the specific implementation method is as follows: when installing the pole-mounted circuit breaker, the circuit breaker body 20 and the elastic mechanism 30 are fixedly installed on the electric pole through the mounting frame 10, and the elastic telescopic airbag 33 is inflated. When the electric pole vibrates, the sleeve 31 generates radial instantaneous movement, thereby driving the elastic telescopic airbag 33 to move instantaneously, and the elastic telescopic airbag 33 is squeezed by the support column 32 and generates elastic force on the support column 32, thereby driving the support column 32 to swing slowly, avoiding the instantaneous movement of the support column 32 due to the vibration of the electric pole, thereby avoiding the loosening and breaking of the connection of the internal components caused by the vibration of the circuit breaker body 20, or fatigue damage and aging of the components, which affect the life and reliability of the circuit breaker body 20.

[0036] As described above, the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A pole mounted circuit breaker, characterized in that: include: Mounting frame (10); A circuit breaker body (20) is arranged on the mounting frame (10); An elastic mechanism (30) is arranged between the mounting frame (10) and the circuit breaker body (20), the elastic mechanism (30) comprising a sleeve (31) fixedly arranged on the mounting frame (10), a support column (32) arranged in the sleeve (31), and an elastic telescopic airbag (33), the circuit breaker body (20) being arranged on the support column (32), the elastic telescopic airbag (33) surrounding between the inner wall surface of the sleeve (31) and the outer peripheral surface of the support column (32), so that the support column (32) is subjected to the elastic force of the elastic telescopic airbag (33) in the radial direction.

2. The pole mounted circuit breaker according to claim 1, characterized in that: The side wall of the sleeve (31) is provided with an air hole (37) for inflating and deflation of the elastic telescopic airbag (33).

3. The pole mounted circuit breaker according to claim 1, characterized in that: The elastic mechanism (30) further comprises a fixing plate (34) arranged on the mounting frame (10) and a supporting plate (35) arranged on the supporting column (32); the sleeve (31) is arranged on the mounting frame (10) via the fixing plate (34); and the circuit breaker body (20) is arranged on the supporting column (32) via the supporting plate (35).

4. The pole mounted circuit breaker according to claim 3, characterized in that: The fixing plate (34) is provided with a first through hole (343), and one end of the support column (32) close to the fixing plate (34) is provided with a first threaded hole (321) corresponding to the first through hole (343).

5. The pole mounted circuit breaker according to claim 3, characterized in that: The support plate (35) is provided with a second through hole (351), and one end of the support column (32) close to the support plate (35) is provided with a second threaded hole corresponding to the second through hole (351).

6. The pole mounted circuit breaker according to claim 3, characterized in that: An outer edge (36) is provided at one end of the support column (32) close to the fixing plate (34), a groove (341) is provided on the fixing plate (34), and an outer edge groove (342) corresponding to the outer edge (36) is provided on the bottom wall surface of the groove (341).

7. The pole mounted circuit breaker according to claim 6, characterized in that: The diameter of the circle formed by the outer edge (36) is greater than the diameter of the groove (341), and the diameter of the outer groove (342) is greater than the diameter of the circle formed by the outer edge (36).

8. The pole mounted circuit breaker according to claim 1, characterized in that: The mounting frame (10) comprises a clamp (11) and a support frame (12) connected to the clamp (11).

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