Operating mechanism supporting assembly and circuit breaker

Abstract

The utility model provides an operating mechanism supporting assembly and a circuit breaker, and belongs to the field of switch equipment. The operating mechanism supporting assembly comprises a supporting piece used for being fixedly connected with an operating mechanism and further comprises a connecting piece which is arranged below the end of the supporting piece in the length direction and used for being fixedly connected with a breaker frame body, and the supporting piece and the connecting piece are each provided with a connecting hole for a connecting fastener to vertically penetrate through. The connecting hole in at least one of the supporting piece and the connecting piece is a long hole, and an adjusting gasket used for filling a gap between the supporting piece and the connecting piece is arranged between the supporting piece and the connecting piece. The circuit breaker comprises the operating mechanism supporting assembly. The position deviation of the supporting piece in the horizontal direction is adjusted through the long hole, and the position deviation of the supporting piece in the vertical direction is adjusted through the adjusting gasket, so that the operating mechanism is prevented from being subjected to extra stress, and the service life of the operating mechanism is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of switchgear, and in particular relates to an operating mechanism support component and a circuit breaker. Background Technology

[0002] Circuit breakers are important protection and control devices in circuit systems. Circuit breakers are equipped with operating mechanisms to control the opening and closing operations of the circuit breaker. One end of the operating mechanism is connected to the arc extinguishing system of the circuit breaker, while the other end is generally in a suspended state without support.

[0003] In high-voltage circuit breakers, the operating mechanism has a large operating power and weight. For example, the operating mechanism of ultra-high voltage circuit breakers consists of multiple sets of large-diameter steel disc springs and steel working cylinders, with an overall weight of up to two tons. This large weight makes the connection between the operating mechanism and the circuit breaker body prone to deformation and breakage, posing potential quality and safety hazards. In addition, the operating mechanism will generate significant vertical vibrations during operation and transportation. Due to the cantilever design of the operating mechanism, the vibration will cause significant stress at the connection between the operating mechanism and the circuit breaker body, increasing the risk of breakage at that point.

[0004] Therefore, heavier operating mechanisms typically have a support component at the end furthest from the circuit breaker body. This support component is usually welded directly to the switchgear bracket, and its position cannot be adjusted. However, due to manufacturing and assembly errors in the support component and the operating mechanism, the operating mechanism may be subjected to additional tensile, pushing, or shear stresses after being installed on the support component, severely affecting its service life. Utility Model Content

[0005] The purpose of this utility model is to provide an operating mechanism support component to solve the technical problem in the prior art that the operating mechanism of the circuit breaker is easily subjected to additional stress due to manufacturing errors and assembly errors, which affects the service life of the operating mechanism.

[0006] Another objective of this invention is to provide a circuit breaker to solve the aforementioned technical problems.

[0007] To achieve the above objectives, the technical solution for the operating mechanism support component provided by this utility model is as follows:

[0008] An operating mechanism support assembly includes a support member for fixed connection with the operating mechanism, and a connector disposed below the end of the support member in the length direction for fixed connection with a circuit breaker frame. Both the support member and the connector are provided with connecting holes for connecting fasteners to pass through vertically, and at least one of the support member and the connector has an elongated connecting hole. An adjusting shim is provided between the support member and the connector to fill the gap between the support member and the connector.

[0009] As a further improvement, the connecting holes on both the support and the connector are elongated holes, and the length direction of the connecting hole on the support is set at an angle to the length direction of the connecting hole on the connector.

[0010] As a further improvement, the length direction of the connecting hole on the support is perpendicular to the length direction of the connecting hole on the connector.

[0011] As a further improvement, the adjusting shim is provided with through holes for connecting fasteners to pass through.

[0012] As a further improvement, a notch is provided on one side edge of the adjusting shim to avoid the connecting fastener when the adjusting shim is inserted between the support and the connector.

[0013] As a further improvement, the support is provided with connecting ears, and the connecting holes on the support are provided on the connecting ears.

[0014] As a further improvement, the support includes a support body, and a connecting plate is fixedly disposed below the support body. Both ends of the connecting plate protrude from the support body in a horizontal plane and in a direction perpendicular to the length direction of the support body, and both parts of the connecting plate protruding from the support body constitute the connecting ears.

[0015] As a further improvement, the connector includes a horizontal plate and a vertical plate that are perpendicularly connected to each other. The connector has a connecting hole on the horizontal plate and a fixing hole on the vertical plate for fasteners to pass through so that the connector is fixedly connected to the circuit breaker frame. The fixing hole is an elongated hole and its length direction is horizontal.

[0016] As a further improvement, reinforcing ribs are provided between the horizontal and vertical plates.

[0017] The beneficial effects are as follows: The operating mechanism support assembly provided by this utility model is an improvement on the prior art. This operating mechanism support assembly elongates the connecting holes on the support and connector, allowing the support to be adjusted horizontally. Simultaneously, adjusting shims are placed between the support and connector to fill the gap, ensuring reliable and stable vertical support for the support. This eliminates positional deviations in the support caused by manufacturing and assembly errors during installation, preventing additional stress on the operating mechanism and extending its service life.

[0018] To achieve the above objectives, the technical solution of the circuit breaker provided by this utility model is as follows:

[0019] A circuit breaker includes a circuit breaker frame and an operating mechanism. An operating mechanism support assembly is provided between the circuit breaker frame and the operating mechanism to provide support for the operating mechanism. The operating mechanism support assembly includes a support member for fixed connection with the operating mechanism, and a connector provided below the end of the support member in the length direction for fixed connection with the circuit breaker frame. Both the support member and the connector are provided with connecting holes for vertical fasteners to pass through, and at least one of the support member and the connector has an elongated connecting hole. An adjusting shim is provided between the support member and the connector to fill the gap between the support member and the connector.

[0020] As a further improvement, the connecting holes on both the support and the connector are elongated holes, and the length direction of the connecting hole on the support is set at an angle to the length direction of the connecting hole on the connector.

[0021] As a further improvement, the length direction of the connecting hole on the support is perpendicular to the length direction of the connecting hole on the connector.

[0022] As a further improvement, the adjusting shim is provided with through holes for connecting fasteners to pass through.

[0023] As a further improvement, a notch is provided on one side edge of the adjusting shim to avoid the connecting fastener when the adjusting shim is inserted between the support and the connector.

[0024] As a further improvement, the support is provided with connecting ears, and the connecting holes on the support are provided on the connecting ears.

[0025] As a further improvement, the support includes a support body, and a connecting plate is fixedly disposed below the support body. Both ends of the connecting plate protrude from the support body in a horizontal plane and in a direction perpendicular to the length direction of the support body, and both parts of the connecting plate protruding from the support body constitute the connecting ears.

[0026] As a further improvement, the connector includes a horizontal plate and a vertical plate that are perpendicularly connected to each other. The connector has a connecting hole on the horizontal plate and a fixing hole on the vertical plate for fasteners to pass through so that the connector is fixedly connected to the circuit breaker frame. The fixing hole is an elongated hole and its length direction is horizontal.

[0027] As a further improvement, reinforcing ribs are provided between the horizontal and vertical plates.

[0028] The beneficial effects are as follows: The circuit breaker provided by this utility model is an improvement on the existing technology. The operating mechanism support assembly in this circuit breaker uses elongated holes on the support and connector to allow for horizontal position adjustment of the support. Simultaneously, adjusting shims are placed between the support and connector to fill the gap, ensuring reliable and stable vertical support for the support. This allows for the elimination of positional deviations in the support caused by manufacturing and assembly errors during installation, preventing additional stress on the operating mechanism and extending its service life. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the circuit breaker of this utility model;

[0030] Figure 2 This is a partial cross-sectional view of Embodiment 1 of the circuit breaker of this utility model;

[0031] Figure 3 This is a partial cross-sectional view from another perspective of Embodiment 1 of the circuit breaker of this utility model;

[0032] Figure 4 This is a schematic diagram of the connecting component in Embodiment 1 of the circuit breaker of this utility model;

[0033] Figure 5 This is a schematic diagram of the support member in Embodiment 1 of the circuit breaker of this utility model;

[0034] Figure 6 This is a schematic diagram of the adjusting shim in Embodiment 1 of the circuit breaker of this utility model;

[0035] Figure 7 This is a schematic diagram of the adjusting shim structure in Embodiment 4 of the circuit breaker of this utility model.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Circuit breaker frame; 2. Operating mechanism; 3. Support component; 31. Support body; 32. Connecting plate; 33. Second connecting hole; 4. Connecting component; 41. Horizontal plate; 42. Vertical plate; 43. Reinforcing rib; 44. First connecting hole; 45. Fixing hole; 5. Adjusting shim; 51. Through hole; 52. Notch; 6. Fixing fastener; 7. Connecting fastener; 8. Installing fastener. Detailed Implementation

[0038] The present invention will be further described in detail below with reference to the embodiments.

[0039] To address the problems in the prior art, the basic concept of this utility model is to use elongated holes to adjust the horizontal positional deviation of the support member and to use adjusting shims to adjust the vertical positional deviation of the support member.

[0040] Specific embodiment 1 of the circuit breaker provided by this utility model:

[0041] The circuit breaker includes a circuit breaker frame 1, an arc extinguishing system, and an operating mechanism 2. The output end of the operating mechanism 2 is connected to the arc extinguishing system. An operating mechanism support assembly is provided between the end of the operating mechanism 2 away from the output end and the circuit breaker frame 1, and the operating mechanism support assembly provides support for that end of the operating mechanism 2.

[0042] See appendix Figure 1 and attached Figure 2 The operating mechanism support assembly includes a support member 3 and two connecting members 4, which are respectively located below both ends of the support member 3 along its length. Both connecting members 4 are fixedly connected to the circuit breaker frame 1, the support member 3 is fixedly connected to the connecting members 4, and the operating mechanism 2 is fixedly connected to the support member 3.

[0043] The connector 4 includes a horizontal plate 41 and a vertical plate 42 that are perpendicular to each other and integrally formed by bending. The horizontal plate 41 and the vertical plate 42 have an overall angular structure. A reinforcing rib 43 plate is welded and fixed between the horizontal plate 41 and the vertical plate 42 to enhance the overall strength of the connector 4. See Appendix Figure 3 and attached Figure 4 Two fixing holes 45 are provided on the vertical plate 42. During installation, the outer side of the vertical plate 42 is close to the inner side of the support leg of the circuit breaker frame 1, so that the thickness direction of the vertical plate 42 is in the same direction as the length direction of the support 3. Align the fixing holes 45 on the vertical plate 42 with the corresponding holes on the support leg. Then, use the fixing fastener 6 to pass through the fixing holes 45 and the holes on the support leg. The fixing fastener 6 is a bolt. After tightening the bolt, the vertical plate 42 and the support leg are fixed together.

[0044] In this embodiment, the fixing hole 45 is an elongated hole with a horizontal length direction, allowing the position of the connector 4 to be adjusted along the length of the fixing hole 45. The reason for not setting the length direction of the fixing hole 45 to be vertical is to prevent the connector 4 from sliding downward relative to the circuit breaker frame 1 due to the weight of the operating mechanism 2 or vertical vibration during use.

[0045] See appendix Figure 5 and in conjunction with the appendix Figure 3 The support 3 specifically includes a support body 31 and two connecting plates 32. The support body 31 is made of channel steel. When in use, the groove of the channel steel faces away from the operating mechanism 2. The end of the operating mechanism 2 away from its output end is attached to the side of the channel steel away from the groove. The two are fixedly connected by fasteners 8 passing through the web of the support body 31. In this embodiment, the fasteners 8 are bolts.

[0046] The connecting plate 32 is welded to the lower side of both ends of the support body 31 along its length. The two ends of the connecting plate 32 protrude from the support body 31 in the horizontal plane and in the direction perpendicular to the length of the support body 31. Both parts of the connecting plate 32 that protrude from the support body 31 constitute connecting ears.

[0047] The two connecting plates 32 of the support member 3 sit on the corresponding horizontal plate 41. The connecting ears of the horizontal plate 41 and the connecting plate 32 are provided with corresponding connecting holes. During installation, the connecting holes on the horizontal plate 41 and the connecting ears are aligned with each other, and the connecting fastener 7 passes through the connecting hole vertically. The connecting fastener 7 is a bolt. After tightening the bolt, the connecting plate 32 and the horizontal plate 41 can be fixed to each other.

[0048] The connecting hole on the horizontal plate 41 is used as the first connecting hole 44, and the connecting hole on the connecting plate 32 is used as the second connecting hole 33. Both the first connecting hole 44 and the second connecting hole 33 are elongated holes, and the length direction of the first connecting hole 44 is set at an angle to the length direction of the second connecting hole 33. In this way, during the installation process, the support 3 can be adjusted in any direction relative to the connecting member 4 in the horizontal plane, which effectively improves the position adjustment capability of the support 3 in the horizontal plane.

[0049] In one embodiment of this invention, the length direction of the first connecting hole 44 is perpendicular to the length direction of the second connecting hole 33, and the length direction of the second connecting hole 33 is in the same direction as the length direction of the support member 3. This makes it easier for installers to observe and adjust the installation position of the support member 3, and also allows the support member 3 to have a larger range of position adjustment.

[0050] See appendix Figure 2 and attached Figure 3 and in conjunction with the appendix Figure 6An adjusting shim 5 is provided between the connecting plate 32 and the horizontal plate 41. The adjusting shim 5 is provided with a through hole 51 for the connecting fastener 7 to pass through. During the installation process, the adjusting shim 5 of appropriate thickness or the adjusting shim 5 of appropriate number can be selected according to the gap between the connecting plate 32 and the horizontal plate 41 so that the two ends of the support member 3 can be reliably and effectively supported.

[0051] The installation process of the operating mechanism support assembly is as follows: First, the support 3 is fixedly connected to the operating mechanism 2. Then, the connector 4 is attached to the circuit breaker frame 1 and pre-assembled. During the pre-assembly process, the fasteners 6 are not tightened. Then, according to the gap between the connecting plate 32 of the support 3 and the horizontal plate 41 of the connector 4, an appropriate thickness or an appropriate number of adjusting shims 5 are selected and inserted between the connecting plate 32 of the support 3 and the horizontal plate 41 of the connector 4. After ensuring that the support 3 can be effectively supported, the fastening between the connector 4 and the support 3 and the fastening between the connector 4 and the circuit breaker frame 1 are completed in sequence.

[0052] During the fastening operation between the connector 4 and the support 3, the fastener 7 is installed at the intersection of the first connecting hole 44 and the second connecting hole 33, so that the support 3 can adapt to the manufacturing and assembly errors of the equipment in the horizontal direction. The adjusting shim 5 can make the support 3 adapt to the manufacturing and assembly errors of the equipment in the vertical direction, which not only provides effective fixed support for the operating mechanism 2, but also prevents the operating mechanism 2 from bearing additional stress.

[0053] During use, the support 3 and the connector 4 mainly generate forces in the vertical direction. Since the support 3 and the connector 4 are adjusted in the vertical direction by adjusting the shims 5, there will be no relative sliding after the support 3 and the connector 4 are fastened to each other, which effectively ensures the reliability of the support assembly of the operating mechanism for the operating mechanism 2.

[0054] Specific embodiment 2 of the circuit breaker provided by this utility model:

[0055] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that the length direction of the first connecting hole and the length direction of the second connecting hole are not perpendicular, but they are still set at a certain angle, which can also realize the position adjustment of the support member in any direction in the horizontal plane.

[0056] Specific embodiment 3 of the circuit breaker provided by this utility model:

[0057] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that the first connecting hole is a round hole, and the length direction of the second connecting hole is still in the same direction as the length direction of the support. In this way, the support and the connecting member can only be adjusted in relative position in one direction in the horizontal plane, which can prevent the support from twisting.

[0058] In this embodiment, since the fixing hole is still an elongated hole and its length direction is perpendicular to the length direction of the second connecting hole, the support can still be adjusted in any direction in the horizontal plane.

[0059] Specific embodiment 4 of the circuit breaker provided by this utility model:

[0060] This embodiment is based on Embodiment 1, and the difference from Embodiment 1 is as follows (see Appendix). Figure 7 In this embodiment, the adjusting shim 5 does not have a through hole 51, but a notch 52 is provided on one side edge. The notch 52 corresponds to the connecting fastener 7 and is used to avoid the connecting fastener 7 when the adjusting shim 5 is inserted between the support 3 and the connector 4.

[0061] Compared to Embodiment 1, in this embodiment, the connecting fastener 7 can be pre-assembled, that is, the connecting fastener 7 is installed but not tightened, and the adjusting shim 5 is inserted between the support 3 and the connector 4. This makes it easier to continuously try to replace adjusting shims 5 of different thicknesses or different numbers of adjusting shims 5.

[0062] Specific embodiment 5 of the circuit breaker provided by this utility model:

[0063] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that the adjusting shim does not have perforations or notches. The width of the adjusting shim in this embodiment is smaller than the distance between two fasteners installed on the same connector, so that the adjusting shim can be inserted between the two fasteners.

[0064] Specific embodiment 6 of the circuit breaker provided by this utility model:

[0065] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that the support member in this embodiment does not have a connecting plate, but two connecting ears are set separately at the same end of the support body. The connecting ears are fixed to both sides of the support body by welding, and the lower surface of the connecting ears is aligned with the lower surface of the support body.

[0066] Specific embodiment 7 of the circuit breaker provided by this utility model:

[0067] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that the support member in this embodiment only includes the support body, the second connecting hole is provided on the lower wing plate of the support body, and the length direction of the second connecting hole is in the same direction as the length direction of the support body.

[0068] Specific embodiment 8 of the circuit breaker provided by this utility model:

[0069] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that the support component in this embodiment only includes the support body, and the support body is a square steel tube. The second connecting hole is directly set on the lower side wall of the square steel tube, and the upper side wall of the square steel tube is provided with an operation hole for fastening tools to be inserted to fasten the fasteners.

[0070] Specific embodiment 9 of the circuit breaker provided by this utility model:

[0071] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that the connector in this embodiment is a cuboid structure. Of the two mutually perpendicular sides of the connector, one side is attached to the circuit breaker frame and welded to the circuit breaker frame, and the other side is used to provide a support plane for the support member. In this embodiment, the first connecting hole penetrates the connector in the vertical direction.

[0072] Specific embodiments of the operating mechanism support component provided by this utility model:

[0073] The operating mechanism support component is the same as the operating mechanism support component in the specific embodiment of the circuit breaker described above, and will not be described again.

[0074] Finally, it should be noted that the above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An operating mechanism support assembly, comprising a support member for fixed connection with the operating mechanism, characterized in that, It also includes a connector disposed below the end of the support member along its length and used for fixed connection with the circuit breaker frame. Both the support member and the connector are provided with a connecting hole for the connecting fastener to pass through vertically, and at least one of the support member and the connector has an elongated connecting hole. An adjusting shim is provided between the support member and the connector to fill the gap between the support member and the connector.

2. The operating mechanism support assembly according to claim 1, characterized in that, The connecting holes on both the support and the connector are elongated holes, and the length direction of the connecting hole on the support is set at an angle to the length direction of the connecting hole on the connector.

3. The operating mechanism support assembly according to claim 2, characterized in that, The length direction of the connecting hole on the support is perpendicular to the length direction of the connecting hole on the connector.

4. The operating mechanism support assembly according to any one of claims 1-3, characterized in that, The adjusting shim has through holes for connecting fasteners to pass through.

5. The operating mechanism support assembly according to any one of claims 1-3, characterized in that, One edge of the adjusting shim is provided with a notch to avoid the connecting fastener when the adjusting shim is inserted between the support and the connector.

6. The operating mechanism support assembly according to any one of claims 1-3, characterized in that, The support is provided with connecting ears, and the connecting holes on the support are located on the connecting ears.

7. The operating mechanism support assembly according to claim 6, characterized in that, The support includes a support body, and a connecting plate is fixedly installed below the support body. Both ends of the connecting plate protrude from the support body in a horizontal plane and in a direction perpendicular to the length direction of the support body, and both parts of the connecting plate that protrude from the support body constitute the connecting ears.

8. The operating mechanism support assembly according to any one of claims 1-3, characterized in that, The connector includes a horizontal plate and a vertical plate that are perpendicularly connected to each other. The connecting hole on the connector is located on the horizontal plate, and the vertical plate is provided with a fixing hole for fasteners to pass through so that the connector is fixedly connected to the circuit breaker frame. The fixing hole is an elongated hole and its length direction is horizontal.

9. The operating mechanism support assembly according to claim 8, characterized in that, Reinforcing ribs are provided between the horizontal and vertical plates.

10. A circuit breaker, comprising a circuit breaker frame and an operating mechanism, characterized in that, An operating mechanism support assembly, as described in any one of claims 1-9, is provided between the circuit breaker frame and the operating mechanism for providing support to the operating mechanism.

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