Assembling equipment for opening spring of circuit breaker

Abstract

The utility model belongs to the technical field of circuit breaker assembly, and discloses an assembly device for an opening spring of a circuit breaker. The circuit breaker comprises a frame, an opening spring and a frame spring hanging plate, one end of the opening spring and the frame spring hanging plate are both fixed to the frame, the assembling device of the opening spring of the circuit breaker comprises a pulling part and an adjusting part, the first end of the pulling part is arranged in the frame and detachably connected with the other end of the opening spring, and the second end of the pulling part is arranged outside the frame; the adjusting piece is rotatably connected with the second end, arranged outside the frame, of the pulling piece, and the adjusting piece can drive the pulling piece to move, so that the other end of the opening spring is fixed to the frame spring hanging plate. By arranging the assembling equipment for the opening spring of the circuit breaker on the circuit breaker, the pulling piece is driven by the adjusting piece to move, so that the opening spring reaches a proper length, and then the end part of the opening spring is fixed on the frame spring hanging plate to complete the assembling of the opening spring; a traditional stretching tool is replaced, a gasket does not need to be placed, the assembling time can be saved, and the assembling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breaker assembly, in particular to an assembly device for an opening spring of a circuit breaker. Background Art

[0002] In medium-voltage switches, the trip spring is a crucial component. For example, in a circuit breaker, the trip spring ensures the breaker quickly disconnects the circuit, providing excellent protection in the event of a fault.

[0003] In the prior art, due to the limited assembly space inside the circuit breaker, a stretching tool is used to stretch the trip spring externally, and a gasket needs to be provided on the stretching tool to limit the stretching length so that the trip spring can be assembled at an appropriate length.

[0004] That is, the existing method of stretching the trip spring externally using a stretching tool requires placing gaskets, which is time-consuming and labor-intensive, and the number of gaskets placed needs to be repeatedly adjusted to make the trip spring reach an appropriate length, resulting in low assembly efficiency. Utility Model Content

[0005] The purpose of the utility model is to provide an assembly device for the trip spring of a circuit breaker, so as to solve the problem that the existing method of using a stretching tool to stretch the trip spring externally requires placing gaskets, which is time-consuming and labor-intensive, and requires repeatedly adjusting the number of gaskets placed to make the trip spring reach an appropriate length, resulting in low assembly efficiency.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] The utility model provides an assembly device for an opening spring of a circuit breaker. The circuit breaker includes a frame, an opening spring, and a frame spring hanging plate. One end of the opening spring and the frame spring hanging plate are both fixed to the frame. The assembly device for the opening spring of the circuit breaker includes:

[0008] a pulling member, wherein a first end of the pulling member is placed inside the frame and is detachably connected to the other end of the opening spring, and a second end of the pulling member is placed outside the frame;

[0009] The adjusting member is rotatably connected to the second end of the pulling member placed outside the frame, and the adjusting member can drive the pulling member to move so that the other end of the opening spring is fixed to the frame spring hanging plate.

[0010] As an optional technical solution for an assembly device of a trip spring of a circuit breaker, the pulling member is threadedly connected to the adjusting member, and the adjusting member can drive the pulling member to move up and down along its own axis.

[0011] As an optional technical solution for the assembly equipment of a circuit breaker's trip spring, the adjusting member has a mounting section, and the mounting section has a limiting annular surface perpendicular to its own axial direction; the mounting section is used to partially pass through the first mounting hole on the frame, and the limiting annular surface is pressed against the frame under the action of the trip spring.

[0012] As an optional technical solution for an assembly device of a trip spring of a circuit breaker, an outer peripheral surface of the mounting section passing through the first mounting hole is in contact with a hole wall of the first mounting hole.

[0013] As an optional technical solution for an assembly device of a trip spring of a circuit breaker, an internal thread cooperating with the pulling member is provided inside the installation section.

[0014] As an optional technical solution for an assembly device of a trip spring of a circuit breaker, the adjusting member has a screwing section that is threadably engaged with the pulling member, and the screwing section is cylindrical and has a hexagonal cross section.

[0015] As an optional technical solution for an assembly device for an opening spring of a circuit breaker, the assembly device for an opening spring of a circuit breaker further includes a connecting piece, and the pulling piece is detachably connected to the other end of the opening spring via the connecting piece.

[0016] As an optional technical solution for an assembly device of a trip spring of a circuit breaker, the pulling member is detachably connected to the connecting member.

[0017] As an optional technical solution for an assembly device for an opening spring of a circuit breaker, the circuit breaker further includes an opening spring hanging plate, and the connecting member is connected to the other end of the opening spring via the opening spring hanging plate.

[0018] As an optional technical solution for assembling equipment of a circuit breaker opening spring, the first end of the connecting member abuts the pulling member, and the second end of the connecting member passes through the pulling member and is threadedly connected to the opening spring plate.

[0019] Beneficial effects:

[0020] The utility model provides an assembly device for a trip spring of a circuit breaker. The circuit breaker includes a frame, a trip spring, and a frame spring plate. One end of the trip spring and the frame spring plate are both fixed to the frame. The assembly device for the trip spring of the circuit breaker includes a pulling member and an adjusting member. The first end of the pulling member is placed in the frame and is detachably connected to the other end of the trip spring. The second end of the pulling member is placed outside the frame. The adjusting member is rotatably connected to the second end of the pulling member placed outside the frame, and the adjusting member can drive the pulling member to move so that the other end of the trip spring is fixed to the frame spring plate. By arranging the assembly device for the trip spring of the circuit breaker on the circuit breaker, the assembly device for the trip spring of the circuit breaker includes a pulling member and an adjusting member. The adjusting member is used to drive the pulling member to move so that the trip spring reaches an appropriate length, and then the end of the trip spring is fixed to the frame spring plate to complete the assembly of the trip spring. It replaces the traditional stretching tooling and does not require the placement of gaskets, which can save assembly time and improve assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a partial structural diagram of an assembly device for a trip spring of a circuit breaker provided by an embodiment of the utility model;

[0022] Figure 2 It is a structural diagram of the framework provided by an embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the assembly equipment of the circuit breaker opening spring and the partial structure of the circuit breaker provided by the embodiment of the utility model Figure 1 ;

[0024] Figure 4 This is a schematic diagram of the assembly equipment of the circuit breaker opening spring and the partial structure of the circuit breaker provided by the embodiment of the utility model Figure 2 ;

[0025] Figure 5 This is a schematic diagram of the assembly equipment of the circuit breaker opening spring and the partial structure of the circuit breaker provided by the embodiment of the utility model Figure 3 ;

[0026] Figure 6 It is a structural schematic diagram of the opening spring and the opening spring plate provided by an embodiment of the utility model.

[0027] In the picture:

[0028] 11. Adjusting member; 111. Mounting section; 1111. Limiting ring surface; 112. Twisting section; 12. Pulling member; 13. Connecting member;

[0029] 20. Disconnect spring; 21. Hook;

[0030] 30. Disconnection spring plate; 31. First penetration hole; 32. Second installation hole;

[0031] 40. Frame hanging spring plate; 41. Second penetration hole;

[0032] 50. Closing component; 51. Closing crank arm; 52. Transmission component; 53. Spring pin; 54. Transmission connecting plate; 55. Output crank arm; 56. Main shaft;

[0033] 60. Positioning parts;

[0034] 70. Frame; 701. First mounting hole. DETAILED DESCRIPTION

[0035] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0036] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0037] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0038] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0039] like Figures 1 to 6As shown, this embodiment provides an assembly device for a trip spring of a circuit breaker, wherein the circuit breaker includes a frame 70, a trip spring 20 and a frame spring plate 40, one end of the trip spring 20 and the frame spring plate 40 are both fixed to the frame 70, and the assembly device for the trip spring of the circuit breaker includes a pulling member 12 and an adjusting member 11, a first end of the pulling member 12 is placed in the frame 70 and is detachably connected to the other end of the trip spring 20, and a second end of the pulling member 12 is placed outside the frame 70; the adjusting member 11 is rotatably connected to the second end of the pulling member 12 placed outside the frame 70, and the adjusting member 11 can drive the pulling member 12 to move, so that the other end of the trip spring 20 is fixed to the frame spring plate 40.

[0040] By setting an assembly device for the circuit breaker's trip spring on the circuit breaker, the assembly device for the circuit breaker's trip spring includes a pulling member 12 and an adjusting member 11. The adjusting member 11 is used to drive the pulling member 12 to move so that the trip spring 20 reaches an appropriate length, and then the end of the trip spring 20 is fixed on the frame spring hanging plate 40 to complete the assembly of the trip spring 20; replacing the traditional stretching tooling, there is no need to place gaskets, which can save assembly time and improve assembly efficiency.

[0041] See also Figure 1 and Figure 2 The pulling member 12 is threadedly connected to the adjusting member 11, and the adjusting member 11 can drive the pulling member 12 to move up and down along its own axis. In traditional stretching tooling, if the number of gaskets is not appropriate when assembling the trip spring 20, it is necessary to change the number of gaskets and adjust again until the trip spring 20 is adjusted to the appropriate length and then complete the assembly; while in this embodiment, the adjusting member 11 and the pulling member 12 are threadedly matched. When the adjusting member 11 rotates, the pulling member 12 can move up and down along its own axis. As the pulling member 12 moves up and down, the deformation of the trip spring 20 changes. There is no specific adjustment gear, and the pulling member 12 can be controlled to stay at any position. The adjusting member 11 can be rotated continuously at one time until the trip spring 20 reaches the appropriate length, thereby realizing stepless adjustment of the length of the trip spring 20 without repeated adjustment, effectively improving assembly efficiency.

[0042] In this embodiment, the circuit breaker is a medium-voltage circuit breaker; the frame spring plate 40 is welded to the frame 70. The pull member 12 may be a screw, and the adjustment member 11 is hollow and has an internal thread on its inner wall that mates with the pull member 12. In other embodiments, other types of screw transmission structures may also be provided.

[0043] In this embodiment, the frame 70 is provided with a first mounting hole 701; the adjusting member 11 has a mounting section 111, which has a limiting annular surface 1111 perpendicular to its own axis. The mounting section 111 is configured to partially penetrate the first mounting hole 701 in the frame 70. The limiting annular surface 1111 is pressed against the frame 70 by the trip spring 20. By providing the mounting section 111 with the limiting annular surface 1111, the trip spring 20 is connected to the adjusting member 11 via the pulling member 12. The combined action of the limiting annular surface 1111 and the first mounting hole 701 allows the adjusting member 11 to be rotatably mounted on the frame 70 while ensuring that the relative positions of the adjusting member 11 and the frame 70 are fixed.

[0044] Optionally, the outer circumference of the mounting section 111 inserted into the first mounting hole 701 is in contact with the wall of the first mounting hole 701; and the mounting section 111 is internally provided with internal threads that mate with the pull member 12. By arranging for a portion of the outer circumference of the mounting section 111 to mate with the wall of the first mounting hole 701, the relative position of the frame 70 and the adjusting member 11 is ensured; and by providing the internal threads in the mounting section 111 that mate with the pull member 12, the mounting section 111 is used to restrict the installation position of the pull member 12, thereby facilitating the relative position of the pull member 12 and the frame 70.

[0045] In this embodiment, the mounting section 111 is a stepped shaft, and the small end of the mounting section 111 is rotatably inserted into the first mounting hole 701. The limiting annular surface 1111 is located at the small end of the mounting section 111 and rests on the frame 70 under the action of the trip spring 20. The large end of the mounting section 111 is placed outside the frame 70; the first mounting hole 701 on the frame 70 matches the shape of the small end of the mounting section 111.

[0046] Optionally, the adjusting member 11 further comprises a screwing section 112, which is disposed outside the frame 70 and is cylindrical and has a hexagonal cross section. The hexagonal screwing section 112 allows the adjusting member 11 to be screwed with a wrench, making operation easier.

[0047] In this embodiment, the trip spring 20 can be stretched or shortened in the vertical direction, and the top end of the trip spring 20 is fixed on the frame 70. The assembly equipment of the trip spring of the circuit breaker is used to pull the bottom end of the trip spring 20, so that the bottom end of the trip spring 20 reaches the position near the frame spring hanging plate 40, and the bottom end of the trip spring 20 is fixed on the frame spring hanging plate 40, thereby completing the assembly of the trip spring 20; the axial direction of the mounting section 111 and the screwing section 112 of the adjusting member 11 coincide with each other, and the mounting section 111 and the screwing section 112 are an integrated structure; the adjusting member 11 is vertically penetrated into the first mounting hole 701 from bottom to top, and the pulling member 12 is vertically penetrated into the adjusting member 11 and cooperates with the internal thread of the mounting section 111 and the internal thread of the screwing section 112, and the top end of the pulling member 12 extends into the frame 70; the screwing section 112 is exposed on the outside of the frame 70, which is convenient for using a wrench to screw and rotate the adjusting member 11.

[0048] In this embodiment, the assembly device for the circuit breaker trip spring further includes a connector 13, through which the pull member 12 is detachably connected to the other end of the trip spring 20. The pull member 12 and the connector 13 are detachably connected. The connector 13 allows the pull member 12 to move, driving the connector 13 and applying tension to the trip spring 20. The detachable pull member 12 and connector 13 facilitate removal and replacement of the connector 13. In this embodiment, the connector 13 is detachably inserted horizontally at the top of the pull member 12.

[0049] See also Figures 3 to 6 The circuit breaker also includes a closing component 50, which is disposed within and fixed to a frame 70. The closing component 50 includes a main shaft 56 rotatably mounted on the frame 70, an output crank arm 55 connected to the main shaft 56, a transmission link 54 rotatably connected to the output crank arm 55, and two closing crank arms 51 rotatably mounted on the transmission link 54. The two closing crank arms 51 are disposed opposite each other, with a transmission member 52 disposed between them. The ends of the transmission member 52 are connected to the two closing crank arms 51, respectively, so that the two closing crank arms 51 can rotate synchronously. A hanging spring pin 53 is protruded from one closing crank arm 51. The hanging spring pin 53 is disposed perpendicular to the plane in which the closing crank arm 51 lies and is located between the two closing crank arms 51.

[0050] In this embodiment, a hook 21 is provided at the top of the trip spring 20. The hook 21 is hooked onto the spring pin 53 of the closing component 50. Providing the hook 21 at the top of the trip spring 20 allows the hook 21 to be hooked onto the spring pin 53, making installation quick and convenient, and effectively improving assembly efficiency. The trip spring 20 may be a tension spring.

[0051] Furthermore, the circuit breaker further includes a trip spring plate 30, through which the connector 13 is connected to the bottom end of the trip spring 20. By providing the connector 13 connected to the trip spring 20 via the trip spring plate 30, the length of the trip spring 20 can be adjusted and the trip spring 20 can be fixed.

[0052] In this embodiment, the top end of the trip spring 20 is connected to the closing component 50, and the bottom end of the trip spring 20 is connected to the trip spring plate 30. The first end of the connector 13 abuts the pull member 12, and the second end of the connector 13 passes through the pull member 12 and is threadedly connected to the trip spring plate 30. Specifically, the trip spring plate 30 is provided with a second mounting hole 32. The connector 13 is inserted into the pull member 12, and the end thereof is threadedly engaged with the second mounting hole 32.

[0053] By setting a connecting piece 13 that passes through the pulling piece 12 and is fixed on the trip spring plate 30, the pulling piece 12 can transmit force through the connecting piece 13 and the trip spring plate 30, thereby adjusting the length of the trip spring 20; by setting the connecting piece 13 and the trip spring plate 30 to be threadedly connected, the connection is firm and easy to disassemble and maintain.

[0054] The circuit breaker further includes a positioning member 60 disposed within the frame 70 and used to position the trip spring 20. When the trip spring 20 is adjusted to an appropriate length, the positioning member 60 is used to secure the bottom end of the trip spring 20 to the frame spring hanging plate 40, thereby maintaining the trip spring 20 at the appropriate length for assembly. This simple structure effectively improves assembly efficiency. After the trip spring 20 is assembled, the circuit breaker trip spring assembly device can be removed from the frame 70.

[0055] When the trip spring 20 is stretched to the appropriate length, in order to position the trip spring plate 30, a first through-hole 31 is provided on the trip spring plate 30, and a second through-hole 41 is provided on the frame spring plate 40. A positioning member 60 is inserted into the second through-hole 41 and is used to penetrate the first through-hole 31. By providing the first through-hole 31 on the trip spring plate 30, when the trip spring 20 reaches the appropriate length, the positioning member 60 is inserted into the first through-hole 31 and the second through-hole 41 of the frame spring plate 40, thereby securing the trip spring plate 30 to the frame 70 through the frame spring plate 40, limiting the movement of the trip spring plate 30 and ensuring that the trip spring 20 is assembled at the appropriate length. The positioning member 60 can be a spring pin.

[0056] In this embodiment, the trip spring plate 30 is flat, with the top end connected to the trip spring 20 and the bottom end having a first through-hole 31 and a second mounting hole 32 for connecting the pull member 12 and the positioning member 60, respectively. The connecting member 13 extends horizontally, perpendicular to the plane of the trip spring plate 30. The positioning member 60 also extends horizontally, parallel to the direction of extension of the connecting member 13. The connecting member 13 can be a bolt. By arranging both the pulling member 12 and the positioning member 60 at the bottom end of the trip spring plate 30, the positioning member 60 can be easily installed at the bottom end when the trip spring 20 is adjusted to the desired length, making operation more convenient.

[0057] The following is the specific installation and use process of the assembly equipment of the circuit breaker's opening spring:

[0058] See also Figure 4 and Figure 5 , install the pulling member 12 in the adjusting member 11, pass the adjusting member 11 through the first mounting hole 701 of the frame 70 from bottom to top, and use the connecting member 13 to fix the pulling member 12 to the bottom end of the trip spring plate 30. Under the tension of the trip spring 20, the limiting annular surface 1111 of the mounting section 111 of the adjusting member 11 rests on the frame 70, thereby limiting the upward movement of the adjusting member 11, and the screwing section 112 of the adjusting member 11 is exposed outside the frame 70.

[0059] See also Figure 6 The hook 21 of the trip spring 20 is hung on the spring pin 53 of the closing component 50. Use a wrench to screw the adjusting piece 11 clockwise. The rotation of the adjusting piece 11 can drive the pulling piece 12 to move downward along its own axis. The trip spring plate 30 moves with the pulling piece 12, so that the trip spring 20 is stretched by force, so that the trip spring 20 can reach the appropriate length.

[0060] When the trip spring 20 is stretched to an appropriate length, the first penetration hole 31 of the trip spring plate 30 is aligned with the second penetration hole 41 on the frame spring plate 40, and the positioning piece 60 is penetrated into the first penetration hole 31 and the second penetration hole 41, so that the frame spring plate 40 is used to limit the position of the trip spring plate 30, so that the trip spring plate 30 cannot move further, and the trip spring 20 is maintained at an appropriate length to complete the assembly. After the assembly of the trip spring 20 is completed, the assembly equipment of the trip spring of the circuit breaker can be removed from the frame 70.

[0061] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. An assembly device for a trip spring of a circuit breaker, wherein the circuit breaker comprises a frame (70), a trip spring (20) and a frame spring plate (40), wherein one end of the trip spring (20) and the frame spring plate (40) are both fixed to the frame (70), and wherein: The assembly equipment of the opening spring of the circuit breaker includes: A pulling member (12), wherein a first end of the pulling member (12) is placed inside the frame (70) and is detachably connected to the other end of the opening spring (20), and a second end of the pulling member (12) is placed outside the frame (70); The adjusting member (11) is rotatably connected to the second end of the pulling member (12) outside the frame (70), and the adjusting member (11) can drive the pulling member (12) to move, so that the other end of the opening spring (20) is fixed to the frame hanging spring plate (40).

2. The assembly device for the opening spring of a circuit breaker according to claim 1, characterized in that: The pulling member (12) is threadedly connected to the adjusting member (11), and the adjusting member (11) can drive the pulling member (12) to move up and down along its own axial direction.

3. The assembly device for the opening spring of a circuit breaker according to claim 2, characterized in that: The regulating member (11) has a mounting section (111), and the mounting section (111) has a limiting annular surface (1111) perpendicular to its own axial direction; the mounting section (111) is used to partially penetrate into a first mounting hole (701) on the frame (70), and the limiting annular surface (1111) is pressed against the frame (70) under the action of the opening spring (20).

4. The assembly device for the opening spring of a circuit breaker according to claim 3, characterized in that: The outer peripheral surface of the mounting section (111) passing through the first mounting hole (701) is in contact with the hole wall of the first mounting hole (701).

5. The assembly device for the opening spring of a circuit breaker according to claim 4, characterized in that: The interior of the installation section (111) is provided with an internal thread that cooperates with the pulling member (12).

6. The assembly equipment for the opening spring of a circuit breaker according to claim 2, characterized in that: The adjusting member (11) has a screwing section (112) threadably engaged with the pulling member (12); the screwing section (112) is cylindrical and has a hexagonal cross section.

7. The assembly equipment for the opening spring of a circuit breaker according to claim 1, characterized in that: The assembly device for the opening spring of the circuit breaker further comprises a connecting piece (13), and the pulling piece (12) is detachably connected to the other end of the opening spring (20) via the connecting piece (13).

8. The assembly equipment for the opening spring of a circuit breaker according to claim 7, characterized in that: The pulling member (12) is detachably connected to the connecting member (13).

9. The assembly device for the opening spring of a circuit breaker according to claim 7, characterized in that: The circuit breaker further comprises a trip spring plate (30), and the connecting member (13) is connected to the other end of the trip spring (20) via the trip spring plate (30).

10. The assembly equipment for the opening spring of a circuit breaker according to claim 9, characterized in that: The first end of the connecting member (13) abuts against the pulling member (12), and the second end of the connecting member (13) passes through the pulling member (12) and is threadedly connected to the opening spring plate (30).

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